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Commit | Line | Data |
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31e31b8a | 1 | /* This is the Linux kernel elf-loading code, ported into user space */ |
d39594e9 | 2 | #include "qemu/osdep.h" |
edf8e2af | 3 | #include <sys/param.h> |
31e31b8a | 4 | |
0ea731db | 5 | #include <sys/prctl.h> |
edf8e2af | 6 | #include <sys/resource.h> |
30ab9ef2 | 7 | #include <sys/shm.h> |
31e31b8a | 8 | |
3ef693a0 | 9 | #include "qemu.h" |
3b249d26 | 10 | #include "user-internals.h" |
db2af69d | 11 | #include "signal-common.h" |
3ad0a769 | 12 | #include "loader.h" |
5423e6d3 | 13 | #include "user-mmap.h" |
76cad711 | 14 | #include "disas/disas.h" |
ce543844 | 15 | #include "qemu/bitops.h" |
f348b6d1 | 16 | #include "qemu/path.h" |
dc5e9ac7 | 17 | #include "qemu/queue.h" |
c6a2377f | 18 | #include "qemu/guest-random.h" |
6fd59449 | 19 | #include "qemu/units.h" |
ee947430 | 20 | #include "qemu/selfmap.h" |
370ed600 | 21 | #include "qemu/lockable.h" |
c7f17e7b | 22 | #include "qapi/error.h" |
cc37d98b | 23 | #include "qemu/error-report.h" |
db2af69d | 24 | #include "target_signal.h" |
7c10cb38 | 25 | #include "accel/tcg/debuginfo.h" |
31e31b8a | 26 | |
5a534314 PM |
27 | #ifdef TARGET_ARM |
28 | #include "target/arm/cpu-features.h" | |
29 | #endif | |
30 | ||
e58ffeb3 | 31 | #ifdef _ARCH_PPC64 |
a6cc84f4 | 32 | #undef ARCH_DLINFO |
33 | #undef ELF_PLATFORM | |
34 | #undef ELF_HWCAP | |
ad6919dc | 35 | #undef ELF_HWCAP2 |
a6cc84f4 | 36 | #undef ELF_CLASS |
37 | #undef ELF_DATA | |
38 | #undef ELF_ARCH | |
39 | #endif | |
40 | ||
c40f621a RH |
41 | #ifndef TARGET_ARCH_HAS_SIGTRAMP_PAGE |
42 | #define TARGET_ARCH_HAS_SIGTRAMP_PAGE 0 | |
43 | #endif | |
44 | ||
45 | typedef struct { | |
46 | const uint8_t *image; | |
47 | const uint32_t *relocs; | |
48 | unsigned image_size; | |
49 | unsigned reloc_count; | |
50 | unsigned sigreturn_ofs; | |
51 | unsigned rt_sigreturn_ofs; | |
52 | } VdsoImageInfo; | |
53 | ||
edf8e2af MW |
54 | #define ELF_OSABI ELFOSABI_SYSV |
55 | ||
cb33da57 BS |
56 | /* from personality.h */ |
57 | ||
58 | /* | |
59 | * Flags for bug emulation. | |
60 | * | |
61 | * These occupy the top three bytes. | |
62 | */ | |
63 | enum { | |
d97ef72e RH |
64 | ADDR_NO_RANDOMIZE = 0x0040000, /* disable randomization of VA space */ |
65 | FDPIC_FUNCPTRS = 0x0080000, /* userspace function ptrs point to | |
66 | descriptors (signal handling) */ | |
67 | MMAP_PAGE_ZERO = 0x0100000, | |
68 | ADDR_COMPAT_LAYOUT = 0x0200000, | |
69 | READ_IMPLIES_EXEC = 0x0400000, | |
70 | ADDR_LIMIT_32BIT = 0x0800000, | |
71 | SHORT_INODE = 0x1000000, | |
72 | WHOLE_SECONDS = 0x2000000, | |
73 | STICKY_TIMEOUTS = 0x4000000, | |
74 | ADDR_LIMIT_3GB = 0x8000000, | |
cb33da57 BS |
75 | }; |
76 | ||
77 | /* | |
78 | * Personality types. | |
79 | * | |
80 | * These go in the low byte. Avoid using the top bit, it will | |
81 | * conflict with error returns. | |
82 | */ | |
83 | enum { | |
d97ef72e RH |
84 | PER_LINUX = 0x0000, |
85 | PER_LINUX_32BIT = 0x0000 | ADDR_LIMIT_32BIT, | |
86 | PER_LINUX_FDPIC = 0x0000 | FDPIC_FUNCPTRS, | |
87 | PER_SVR4 = 0x0001 | STICKY_TIMEOUTS | MMAP_PAGE_ZERO, | |
88 | PER_SVR3 = 0x0002 | STICKY_TIMEOUTS | SHORT_INODE, | |
89 | PER_SCOSVR3 = 0x0003 | STICKY_TIMEOUTS | WHOLE_SECONDS | SHORT_INODE, | |
90 | PER_OSR5 = 0x0003 | STICKY_TIMEOUTS | WHOLE_SECONDS, | |
91 | PER_WYSEV386 = 0x0004 | STICKY_TIMEOUTS | SHORT_INODE, | |
92 | PER_ISCR4 = 0x0005 | STICKY_TIMEOUTS, | |
93 | PER_BSD = 0x0006, | |
94 | PER_SUNOS = 0x0006 | STICKY_TIMEOUTS, | |
95 | PER_XENIX = 0x0007 | STICKY_TIMEOUTS | SHORT_INODE, | |
96 | PER_LINUX32 = 0x0008, | |
97 | PER_LINUX32_3GB = 0x0008 | ADDR_LIMIT_3GB, | |
98 | PER_IRIX32 = 0x0009 | STICKY_TIMEOUTS,/* IRIX5 32-bit */ | |
99 | PER_IRIXN32 = 0x000a | STICKY_TIMEOUTS,/* IRIX6 new 32-bit */ | |
100 | PER_IRIX64 = 0x000b | STICKY_TIMEOUTS,/* IRIX6 64-bit */ | |
101 | PER_RISCOS = 0x000c, | |
102 | PER_SOLARIS = 0x000d | STICKY_TIMEOUTS, | |
103 | PER_UW7 = 0x000e | STICKY_TIMEOUTS | MMAP_PAGE_ZERO, | |
104 | PER_OSF4 = 0x000f, /* OSF/1 v4 */ | |
105 | PER_HPUX = 0x0010, | |
106 | PER_MASK = 0x00ff, | |
cb33da57 BS |
107 | }; |
108 | ||
109 | /* | |
110 | * Return the base personality without flags. | |
111 | */ | |
d97ef72e | 112 | #define personality(pers) (pers & PER_MASK) |
cb33da57 | 113 | |
3cb10cfa CL |
114 | int info_is_fdpic(struct image_info *info) |
115 | { | |
116 | return info->personality == PER_LINUX_FDPIC; | |
117 | } | |
118 | ||
83fb7adf FB |
119 | /* this flag is uneffective under linux too, should be deleted */ |
120 | #ifndef MAP_DENYWRITE | |
121 | #define MAP_DENYWRITE 0 | |
122 | #endif | |
123 | ||
124 | /* should probably go in elf.h */ | |
125 | #ifndef ELIBBAD | |
126 | #define ELIBBAD 80 | |
127 | #endif | |
128 | ||
ee3eb3a7 | 129 | #if TARGET_BIG_ENDIAN |
28490231 RH |
130 | #define ELF_DATA ELFDATA2MSB |
131 | #else | |
132 | #define ELF_DATA ELFDATA2LSB | |
133 | #endif | |
134 | ||
a29f998d | 135 | #ifdef TARGET_ABI_MIPSN32 |
918fc54c PB |
136 | typedef abi_ullong target_elf_greg_t; |
137 | #define tswapreg(ptr) tswap64(ptr) | |
a29f998d PB |
138 | #else |
139 | typedef abi_ulong target_elf_greg_t; | |
140 | #define tswapreg(ptr) tswapal(ptr) | |
141 | #endif | |
142 | ||
21e807fa | 143 | #ifdef USE_UID16 |
1ddd592f PB |
144 | typedef abi_ushort target_uid_t; |
145 | typedef abi_ushort target_gid_t; | |
21e807fa | 146 | #else |
f8fd4fc4 PB |
147 | typedef abi_uint target_uid_t; |
148 | typedef abi_uint target_gid_t; | |
21e807fa | 149 | #endif |
f8fd4fc4 | 150 | typedef abi_int target_pid_t; |
21e807fa | 151 | |
30ac07d4 FB |
152 | #ifdef TARGET_I386 |
153 | ||
15338fd7 FB |
154 | #define ELF_HWCAP get_elf_hwcap() |
155 | ||
156 | static uint32_t get_elf_hwcap(void) | |
157 | { | |
a2247f8e AF |
158 | X86CPU *cpu = X86_CPU(thread_cpu); |
159 | ||
160 | return cpu->env.features[FEAT_1_EDX]; | |
15338fd7 FB |
161 | } |
162 | ||
84409ddb | 163 | #ifdef TARGET_X86_64 |
84409ddb | 164 | #define ELF_CLASS ELFCLASS64 |
84409ddb JM |
165 | #define ELF_ARCH EM_X86_64 |
166 | ||
9263ba84 RH |
167 | #define ELF_PLATFORM "x86_64" |
168 | ||
84409ddb JM |
169 | static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop) |
170 | { | |
171 | regs->rax = 0; | |
172 | regs->rsp = infop->start_stack; | |
173 | regs->rip = infop->entry; | |
174 | } | |
175 | ||
9edc5d79 | 176 | #define ELF_NREG 27 |
c227f099 | 177 | typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG]; |
9edc5d79 MW |
178 | |
179 | /* | |
180 | * Note that ELF_NREG should be 29 as there should be place for | |
181 | * TRAPNO and ERR "registers" as well but linux doesn't dump | |
182 | * those. | |
183 | * | |
184 | * See linux kernel: arch/x86/include/asm/elf.h | |
185 | */ | |
05390248 | 186 | static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUX86State *env) |
9edc5d79 | 187 | { |
030912e0 IL |
188 | (*regs)[0] = tswapreg(env->regs[15]); |
189 | (*regs)[1] = tswapreg(env->regs[14]); | |
190 | (*regs)[2] = tswapreg(env->regs[13]); | |
191 | (*regs)[3] = tswapreg(env->regs[12]); | |
192 | (*regs)[4] = tswapreg(env->regs[R_EBP]); | |
193 | (*regs)[5] = tswapreg(env->regs[R_EBX]); | |
194 | (*regs)[6] = tswapreg(env->regs[11]); | |
195 | (*regs)[7] = tswapreg(env->regs[10]); | |
196 | (*regs)[8] = tswapreg(env->regs[9]); | |
197 | (*regs)[9] = tswapreg(env->regs[8]); | |
198 | (*regs)[10] = tswapreg(env->regs[R_EAX]); | |
199 | (*regs)[11] = tswapreg(env->regs[R_ECX]); | |
200 | (*regs)[12] = tswapreg(env->regs[R_EDX]); | |
201 | (*regs)[13] = tswapreg(env->regs[R_ESI]); | |
202 | (*regs)[14] = tswapreg(env->regs[R_EDI]); | |
203 | (*regs)[15] = tswapreg(env->regs[R_EAX]); /* XXX */ | |
204 | (*regs)[16] = tswapreg(env->eip); | |
205 | (*regs)[17] = tswapreg(env->segs[R_CS].selector & 0xffff); | |
206 | (*regs)[18] = tswapreg(env->eflags); | |
207 | (*regs)[19] = tswapreg(env->regs[R_ESP]); | |
208 | (*regs)[20] = tswapreg(env->segs[R_SS].selector & 0xffff); | |
209 | (*regs)[21] = tswapreg(env->segs[R_FS].selector & 0xffff); | |
210 | (*regs)[22] = tswapreg(env->segs[R_GS].selector & 0xffff); | |
211 | (*regs)[23] = tswapreg(env->segs[R_DS].selector & 0xffff); | |
212 | (*regs)[24] = tswapreg(env->segs[R_ES].selector & 0xffff); | |
213 | (*regs)[25] = tswapreg(env->segs[R_FS].selector & 0xffff); | |
214 | (*regs)[26] = tswapreg(env->segs[R_GS].selector & 0xffff); | |
9edc5d79 MW |
215 | } |
216 | ||
d461b73e RH |
217 | #if ULONG_MAX > UINT32_MAX |
218 | #define INIT_GUEST_COMMPAGE | |
219 | static bool init_guest_commpage(void) | |
220 | { | |
221 | /* | |
222 | * The vsyscall page is at a high negative address aka kernel space, | |
223 | * which means that we cannot actually allocate it with target_mmap. | |
224 | * We still should be able to use page_set_flags, unless the user | |
225 | * has specified -R reserved_va, which would trigger an assert(). | |
226 | */ | |
227 | if (reserved_va != 0 && | |
95059f9c | 228 | TARGET_VSYSCALL_PAGE + TARGET_PAGE_SIZE - 1 > reserved_va) { |
d461b73e RH |
229 | error_report("Cannot allocate vsyscall page"); |
230 | exit(EXIT_FAILURE); | |
231 | } | |
232 | page_set_flags(TARGET_VSYSCALL_PAGE, | |
49840a4a | 233 | TARGET_VSYSCALL_PAGE | ~TARGET_PAGE_MASK, |
d461b73e RH |
234 | PAGE_EXEC | PAGE_VALID); |
235 | return true; | |
236 | } | |
237 | #endif | |
84409ddb JM |
238 | #else |
239 | ||
30ac07d4 FB |
240 | /* |
241 | * This is used to ensure we don't load something for the wrong architecture. | |
242 | */ | |
243 | #define elf_check_arch(x) ( ((x) == EM_386) || ((x) == EM_486) ) | |
244 | ||
245 | /* | |
246 | * These are used to set parameters in the core dumps. | |
247 | */ | |
d97ef72e | 248 | #define ELF_CLASS ELFCLASS32 |
d97ef72e | 249 | #define ELF_ARCH EM_386 |
30ac07d4 | 250 | |
9263ba84 | 251 | #define ELF_PLATFORM get_elf_platform() |
872f3d04 | 252 | #define EXSTACK_DEFAULT true |
9263ba84 RH |
253 | |
254 | static const char *get_elf_platform(void) | |
255 | { | |
256 | static char elf_platform[] = "i386"; | |
257 | int family = object_property_get_int(OBJECT(thread_cpu), "family", NULL); | |
258 | if (family > 6) { | |
259 | family = 6; | |
260 | } | |
261 | if (family >= 3) { | |
262 | elf_platform[1] = '0' + family; | |
263 | } | |
264 | return elf_platform; | |
265 | } | |
266 | ||
d97ef72e RH |
267 | static inline void init_thread(struct target_pt_regs *regs, |
268 | struct image_info *infop) | |
b346ff46 FB |
269 | { |
270 | regs->esp = infop->start_stack; | |
271 | regs->eip = infop->entry; | |
e5fe0c52 PB |
272 | |
273 | /* SVR4/i386 ABI (pages 3-31, 3-32) says that when the program | |
274 | starts %edx contains a pointer to a function which might be | |
275 | registered using `atexit'. This provides a mean for the | |
276 | dynamic linker to call DT_FINI functions for shared libraries | |
277 | that have been loaded before the code runs. | |
278 | ||
279 | A value of 0 tells we have no such handler. */ | |
280 | regs->edx = 0; | |
b346ff46 | 281 | } |
9edc5d79 | 282 | |
9edc5d79 | 283 | #define ELF_NREG 17 |
c227f099 | 284 | typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG]; |
9edc5d79 MW |
285 | |
286 | /* | |
287 | * Note that ELF_NREG should be 19 as there should be place for | |
288 | * TRAPNO and ERR "registers" as well but linux doesn't dump | |
289 | * those. | |
290 | * | |
291 | * See linux kernel: arch/x86/include/asm/elf.h | |
292 | */ | |
05390248 | 293 | static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUX86State *env) |
9edc5d79 | 294 | { |
030912e0 IL |
295 | (*regs)[0] = tswapreg(env->regs[R_EBX]); |
296 | (*regs)[1] = tswapreg(env->regs[R_ECX]); | |
297 | (*regs)[2] = tswapreg(env->regs[R_EDX]); | |
298 | (*regs)[3] = tswapreg(env->regs[R_ESI]); | |
299 | (*regs)[4] = tswapreg(env->regs[R_EDI]); | |
300 | (*regs)[5] = tswapreg(env->regs[R_EBP]); | |
301 | (*regs)[6] = tswapreg(env->regs[R_EAX]); | |
302 | (*regs)[7] = tswapreg(env->segs[R_DS].selector & 0xffff); | |
303 | (*regs)[8] = tswapreg(env->segs[R_ES].selector & 0xffff); | |
304 | (*regs)[9] = tswapreg(env->segs[R_FS].selector & 0xffff); | |
305 | (*regs)[10] = tswapreg(env->segs[R_GS].selector & 0xffff); | |
306 | (*regs)[11] = tswapreg(env->regs[R_EAX]); /* XXX */ | |
307 | (*regs)[12] = tswapreg(env->eip); | |
308 | (*regs)[13] = tswapreg(env->segs[R_CS].selector & 0xffff); | |
309 | (*regs)[14] = tswapreg(env->eflags); | |
310 | (*regs)[15] = tswapreg(env->regs[R_ESP]); | |
311 | (*regs)[16] = tswapreg(env->segs[R_SS].selector & 0xffff); | |
9edc5d79 | 312 | } |
a1367443 RH |
313 | |
314 | /* | |
315 | * i386 is the only target which supplies AT_SYSINFO for the vdso. | |
316 | * All others only supply AT_SYSINFO_EHDR. | |
317 | */ | |
318 | #define DLINFO_ARCH_ITEMS (vdso_info != NULL) | |
319 | #define ARCH_DLINFO \ | |
320 | do { \ | |
321 | if (vdso_info) { \ | |
322 | NEW_AUX_ENT(AT_SYSINFO, vdso_info->entry); \ | |
323 | } \ | |
324 | } while (0) | |
325 | ||
a1367443 | 326 | #endif /* TARGET_X86_64 */ |
b346ff46 | 327 | |
6b1a9d38 | 328 | #define VDSO_HEADER "vdso.c.inc" |
b346ff46 | 329 | |
9edc5d79 | 330 | #define USE_ELF_CORE_DUMP |
d97ef72e | 331 | #define ELF_EXEC_PAGESIZE 4096 |
b346ff46 | 332 | |
a1367443 | 333 | #endif /* TARGET_I386 */ |
b346ff46 FB |
334 | |
335 | #ifdef TARGET_ARM | |
336 | ||
24e76ff0 PM |
337 | #ifndef TARGET_AARCH64 |
338 | /* 32 bit ARM definitions */ | |
339 | ||
b597c3f7 | 340 | #define ELF_ARCH EM_ARM |
d97ef72e | 341 | #define ELF_CLASS ELFCLASS32 |
872f3d04 | 342 | #define EXSTACK_DEFAULT true |
b346ff46 | 343 | |
d97ef72e RH |
344 | static inline void init_thread(struct target_pt_regs *regs, |
345 | struct image_info *infop) | |
b346ff46 | 346 | { |
992f48a0 | 347 | abi_long stack = infop->start_stack; |
b346ff46 | 348 | memset(regs, 0, sizeof(*regs)); |
99033cae | 349 | |
167e4cdc PM |
350 | regs->uregs[16] = ARM_CPU_MODE_USR; |
351 | if (infop->entry & 1) { | |
352 | regs->uregs[16] |= CPSR_T; | |
353 | } | |
354 | regs->uregs[15] = infop->entry & 0xfffffffe; | |
355 | regs->uregs[13] = infop->start_stack; | |
2f619698 | 356 | /* FIXME - what to for failure of get_user()? */ |
167e4cdc PM |
357 | get_user_ual(regs->uregs[2], stack + 8); /* envp */ |
358 | get_user_ual(regs->uregs[1], stack + 4); /* envp */ | |
a1516e92 | 359 | /* XXX: it seems that r0 is zeroed after ! */ |
167e4cdc | 360 | regs->uregs[0] = 0; |
e5fe0c52 | 361 | /* For uClinux PIC binaries. */ |
863cf0b7 | 362 | /* XXX: Linux does this only on ARM with no MMU (do we care ?) */ |
167e4cdc | 363 | regs->uregs[10] = infop->start_data; |
3cb10cfa CL |
364 | |
365 | /* Support ARM FDPIC. */ | |
366 | if (info_is_fdpic(infop)) { | |
367 | /* As described in the ABI document, r7 points to the loadmap info | |
368 | * prepared by the kernel. If an interpreter is needed, r8 points | |
369 | * to the interpreter loadmap and r9 points to the interpreter | |
370 | * PT_DYNAMIC info. If no interpreter is needed, r8 is zero, and | |
371 | * r9 points to the main program PT_DYNAMIC info. | |
372 | */ | |
373 | regs->uregs[7] = infop->loadmap_addr; | |
374 | if (infop->interpreter_loadmap_addr) { | |
375 | /* Executable is dynamically loaded. */ | |
376 | regs->uregs[8] = infop->interpreter_loadmap_addr; | |
377 | regs->uregs[9] = infop->interpreter_pt_dynamic_addr; | |
378 | } else { | |
379 | regs->uregs[8] = 0; | |
380 | regs->uregs[9] = infop->pt_dynamic_addr; | |
381 | } | |
382 | } | |
b346ff46 FB |
383 | } |
384 | ||
edf8e2af | 385 | #define ELF_NREG 18 |
c227f099 | 386 | typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG]; |
edf8e2af | 387 | |
05390248 | 388 | static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUARMState *env) |
edf8e2af | 389 | { |
86cd7b2d PB |
390 | (*regs)[0] = tswapreg(env->regs[0]); |
391 | (*regs)[1] = tswapreg(env->regs[1]); | |
392 | (*regs)[2] = tswapreg(env->regs[2]); | |
393 | (*regs)[3] = tswapreg(env->regs[3]); | |
394 | (*regs)[4] = tswapreg(env->regs[4]); | |
395 | (*regs)[5] = tswapreg(env->regs[5]); | |
396 | (*regs)[6] = tswapreg(env->regs[6]); | |
397 | (*regs)[7] = tswapreg(env->regs[7]); | |
398 | (*regs)[8] = tswapreg(env->regs[8]); | |
399 | (*regs)[9] = tswapreg(env->regs[9]); | |
400 | (*regs)[10] = tswapreg(env->regs[10]); | |
401 | (*regs)[11] = tswapreg(env->regs[11]); | |
402 | (*regs)[12] = tswapreg(env->regs[12]); | |
403 | (*regs)[13] = tswapreg(env->regs[13]); | |
404 | (*regs)[14] = tswapreg(env->regs[14]); | |
405 | (*regs)[15] = tswapreg(env->regs[15]); | |
406 | ||
407 | (*regs)[16] = tswapreg(cpsr_read((CPUARMState *)env)); | |
408 | (*regs)[17] = tswapreg(env->regs[0]); /* XXX */ | |
edf8e2af MW |
409 | } |
410 | ||
30ac07d4 | 411 | #define USE_ELF_CORE_DUMP |
d97ef72e | 412 | #define ELF_EXEC_PAGESIZE 4096 |
30ac07d4 | 413 | |
afce2927 FB |
414 | enum |
415 | { | |
d97ef72e RH |
416 | ARM_HWCAP_ARM_SWP = 1 << 0, |
417 | ARM_HWCAP_ARM_HALF = 1 << 1, | |
418 | ARM_HWCAP_ARM_THUMB = 1 << 2, | |
419 | ARM_HWCAP_ARM_26BIT = 1 << 3, | |
420 | ARM_HWCAP_ARM_FAST_MULT = 1 << 4, | |
421 | ARM_HWCAP_ARM_FPA = 1 << 5, | |
422 | ARM_HWCAP_ARM_VFP = 1 << 6, | |
423 | ARM_HWCAP_ARM_EDSP = 1 << 7, | |
424 | ARM_HWCAP_ARM_JAVA = 1 << 8, | |
425 | ARM_HWCAP_ARM_IWMMXT = 1 << 9, | |
43ce393e PM |
426 | ARM_HWCAP_ARM_CRUNCH = 1 << 10, |
427 | ARM_HWCAP_ARM_THUMBEE = 1 << 11, | |
428 | ARM_HWCAP_ARM_NEON = 1 << 12, | |
429 | ARM_HWCAP_ARM_VFPv3 = 1 << 13, | |
430 | ARM_HWCAP_ARM_VFPv3D16 = 1 << 14, | |
24682654 PM |
431 | ARM_HWCAP_ARM_TLS = 1 << 15, |
432 | ARM_HWCAP_ARM_VFPv4 = 1 << 16, | |
433 | ARM_HWCAP_ARM_IDIVA = 1 << 17, | |
434 | ARM_HWCAP_ARM_IDIVT = 1 << 18, | |
435 | ARM_HWCAP_ARM_VFPD32 = 1 << 19, | |
436 | ARM_HWCAP_ARM_LPAE = 1 << 20, | |
437 | ARM_HWCAP_ARM_EVTSTRM = 1 << 21, | |
23d7f14d PM |
438 | ARM_HWCAP_ARM_FPHP = 1 << 22, |
439 | ARM_HWCAP_ARM_ASIMDHP = 1 << 23, | |
440 | ARM_HWCAP_ARM_ASIMDDP = 1 << 24, | |
441 | ARM_HWCAP_ARM_ASIMDFHM = 1 << 25, | |
442 | ARM_HWCAP_ARM_ASIMDBF16 = 1 << 26, | |
443 | ARM_HWCAP_ARM_I8MM = 1 << 27, | |
afce2927 FB |
444 | }; |
445 | ||
ad6919dc PM |
446 | enum { |
447 | ARM_HWCAP2_ARM_AES = 1 << 0, | |
448 | ARM_HWCAP2_ARM_PMULL = 1 << 1, | |
449 | ARM_HWCAP2_ARM_SHA1 = 1 << 2, | |
450 | ARM_HWCAP2_ARM_SHA2 = 1 << 3, | |
451 | ARM_HWCAP2_ARM_CRC32 = 1 << 4, | |
23d7f14d PM |
452 | ARM_HWCAP2_ARM_SB = 1 << 5, |
453 | ARM_HWCAP2_ARM_SSBS = 1 << 6, | |
ad6919dc PM |
454 | }; |
455 | ||
6b1275ff PM |
456 | /* The commpage only exists for 32 bit kernels */ |
457 | ||
66346faf | 458 | #define HI_COMMPAGE (intptr_t)0xffff0f00u |
806d1021 | 459 | |
ee947430 AB |
460 | static bool init_guest_commpage(void) |
461 | { | |
d713cf4d PMD |
462 | ARMCPU *cpu = ARM_CPU(thread_cpu); |
463 | abi_ptr commpage; | |
464 | void *want; | |
465 | void *addr; | |
466 | ||
467 | /* | |
468 | * M-profile allocates maximum of 2GB address space, so can never | |
469 | * allocate the commpage. Skip it. | |
470 | */ | |
471 | if (arm_feature(&cpu->env, ARM_FEATURE_M)) { | |
472 | return true; | |
473 | } | |
474 | ||
475 | commpage = HI_COMMPAGE & -qemu_host_page_size; | |
476 | want = g2h_untagged(commpage); | |
477 | addr = mmap(want, qemu_host_page_size, PROT_READ | PROT_WRITE, | |
478 | MAP_ANONYMOUS | MAP_PRIVATE | MAP_FIXED, -1, 0); | |
97cc7560 | 479 | |
6cda41da | 480 | if (addr == MAP_FAILED) { |
ee947430 AB |
481 | perror("Allocating guest commpage"); |
482 | exit(EXIT_FAILURE); | |
97cc7560 | 483 | } |
ee947430 AB |
484 | if (addr != want) { |
485 | return false; | |
97cc7560 DDAG |
486 | } |
487 | ||
ee947430 | 488 | /* Set kernel helper versions; rest of page is 0. */ |
6cda41da | 489 | __put_user(5, (uint32_t *)g2h_untagged(0xffff0ffcu)); |
97cc7560 | 490 | |
6cda41da | 491 | if (mprotect(addr, qemu_host_page_size, PROT_READ)) { |
97cc7560 | 492 | perror("Protecting guest commpage"); |
ee947430 | 493 | exit(EXIT_FAILURE); |
97cc7560 | 494 | } |
6cda41da RH |
495 | |
496 | page_set_flags(commpage, commpage | ~qemu_host_page_mask, | |
497 | PAGE_READ | PAGE_EXEC | PAGE_VALID); | |
ee947430 | 498 | return true; |
97cc7560 | 499 | } |
adf050b1 BC |
500 | |
501 | #define ELF_HWCAP get_elf_hwcap() | |
ad6919dc | 502 | #define ELF_HWCAP2 get_elf_hwcap2() |
adf050b1 | 503 | |
a55b9e72 | 504 | uint32_t get_elf_hwcap(void) |
adf050b1 | 505 | { |
a2247f8e | 506 | ARMCPU *cpu = ARM_CPU(thread_cpu); |
adf050b1 BC |
507 | uint32_t hwcaps = 0; |
508 | ||
509 | hwcaps |= ARM_HWCAP_ARM_SWP; | |
510 | hwcaps |= ARM_HWCAP_ARM_HALF; | |
511 | hwcaps |= ARM_HWCAP_ARM_THUMB; | |
512 | hwcaps |= ARM_HWCAP_ARM_FAST_MULT; | |
adf050b1 BC |
513 | |
514 | /* probe for the extra features */ | |
515 | #define GET_FEATURE(feat, hwcap) \ | |
a2247f8e | 516 | do { if (arm_feature(&cpu->env, feat)) { hwcaps |= hwcap; } } while (0) |
962fcbf2 RH |
517 | |
518 | #define GET_FEATURE_ID(feat, hwcap) \ | |
519 | do { if (cpu_isar_feature(feat, cpu)) { hwcaps |= hwcap; } } while (0) | |
520 | ||
24682654 PM |
521 | /* EDSP is in v5TE and above, but all our v5 CPUs are v5TE */ |
522 | GET_FEATURE(ARM_FEATURE_V5, ARM_HWCAP_ARM_EDSP); | |
adf050b1 BC |
523 | GET_FEATURE(ARM_FEATURE_IWMMXT, ARM_HWCAP_ARM_IWMMXT); |
524 | GET_FEATURE(ARM_FEATURE_THUMB2EE, ARM_HWCAP_ARM_THUMBEE); | |
525 | GET_FEATURE(ARM_FEATURE_NEON, ARM_HWCAP_ARM_NEON); | |
24682654 | 526 | GET_FEATURE(ARM_FEATURE_V6K, ARM_HWCAP_ARM_TLS); |
bfa8a370 | 527 | GET_FEATURE(ARM_FEATURE_LPAE, ARM_HWCAP_ARM_LPAE); |
873b73c0 PM |
528 | GET_FEATURE_ID(aa32_arm_div, ARM_HWCAP_ARM_IDIVA); |
529 | GET_FEATURE_ID(aa32_thumb_div, ARM_HWCAP_ARM_IDIVT); | |
bfa8a370 RH |
530 | GET_FEATURE_ID(aa32_vfp, ARM_HWCAP_ARM_VFP); |
531 | ||
532 | if (cpu_isar_feature(aa32_fpsp_v3, cpu) || | |
533 | cpu_isar_feature(aa32_fpdp_v3, cpu)) { | |
534 | hwcaps |= ARM_HWCAP_ARM_VFPv3; | |
535 | if (cpu_isar_feature(aa32_simd_r32, cpu)) { | |
536 | hwcaps |= ARM_HWCAP_ARM_VFPD32; | |
537 | } else { | |
538 | hwcaps |= ARM_HWCAP_ARM_VFPv3D16; | |
539 | } | |
540 | } | |
541 | GET_FEATURE_ID(aa32_simdfmac, ARM_HWCAP_ARM_VFPv4); | |
429b7e01 PM |
542 | /* |
543 | * MVFR1.FPHP and .SIMDHP must be in sync, and QEMU uses the same | |
544 | * isar_feature function for both. The kernel reports them as two hwcaps. | |
545 | */ | |
546 | GET_FEATURE_ID(aa32_fp16_arith, ARM_HWCAP_ARM_FPHP); | |
547 | GET_FEATURE_ID(aa32_fp16_arith, ARM_HWCAP_ARM_ASIMDHP); | |
548 | GET_FEATURE_ID(aa32_dp, ARM_HWCAP_ARM_ASIMDDP); | |
549 | GET_FEATURE_ID(aa32_fhm, ARM_HWCAP_ARM_ASIMDFHM); | |
550 | GET_FEATURE_ID(aa32_bf16, ARM_HWCAP_ARM_ASIMDBF16); | |
551 | GET_FEATURE_ID(aa32_i8mm, ARM_HWCAP_ARM_I8MM); | |
adf050b1 BC |
552 | |
553 | return hwcaps; | |
554 | } | |
afce2927 | 555 | |
63c1b7de | 556 | uint64_t get_elf_hwcap2(void) |
ad6919dc PM |
557 | { |
558 | ARMCPU *cpu = ARM_CPU(thread_cpu); | |
63c1b7de | 559 | uint64_t hwcaps = 0; |
ad6919dc | 560 | |
962fcbf2 RH |
561 | GET_FEATURE_ID(aa32_aes, ARM_HWCAP2_ARM_AES); |
562 | GET_FEATURE_ID(aa32_pmull, ARM_HWCAP2_ARM_PMULL); | |
563 | GET_FEATURE_ID(aa32_sha1, ARM_HWCAP2_ARM_SHA1); | |
564 | GET_FEATURE_ID(aa32_sha2, ARM_HWCAP2_ARM_SHA2); | |
565 | GET_FEATURE_ID(aa32_crc32, ARM_HWCAP2_ARM_CRC32); | |
429b7e01 PM |
566 | GET_FEATURE_ID(aa32_sb, ARM_HWCAP2_ARM_SB); |
567 | GET_FEATURE_ID(aa32_ssbs, ARM_HWCAP2_ARM_SSBS); | |
ad6919dc PM |
568 | return hwcaps; |
569 | } | |
570 | ||
a55b9e72 HD |
571 | const char *elf_hwcap_str(uint32_t bit) |
572 | { | |
573 | static const char *hwcap_str[] = { | |
574 | [__builtin_ctz(ARM_HWCAP_ARM_SWP )] = "swp", | |
575 | [__builtin_ctz(ARM_HWCAP_ARM_HALF )] = "half", | |
576 | [__builtin_ctz(ARM_HWCAP_ARM_THUMB )] = "thumb", | |
577 | [__builtin_ctz(ARM_HWCAP_ARM_26BIT )] = "26bit", | |
578 | [__builtin_ctz(ARM_HWCAP_ARM_FAST_MULT)] = "fast_mult", | |
579 | [__builtin_ctz(ARM_HWCAP_ARM_FPA )] = "fpa", | |
580 | [__builtin_ctz(ARM_HWCAP_ARM_VFP )] = "vfp", | |
581 | [__builtin_ctz(ARM_HWCAP_ARM_EDSP )] = "edsp", | |
582 | [__builtin_ctz(ARM_HWCAP_ARM_JAVA )] = "java", | |
583 | [__builtin_ctz(ARM_HWCAP_ARM_IWMMXT )] = "iwmmxt", | |
584 | [__builtin_ctz(ARM_HWCAP_ARM_CRUNCH )] = "crunch", | |
585 | [__builtin_ctz(ARM_HWCAP_ARM_THUMBEE )] = "thumbee", | |
586 | [__builtin_ctz(ARM_HWCAP_ARM_NEON )] = "neon", | |
587 | [__builtin_ctz(ARM_HWCAP_ARM_VFPv3 )] = "vfpv3", | |
588 | [__builtin_ctz(ARM_HWCAP_ARM_VFPv3D16 )] = "vfpv3d16", | |
589 | [__builtin_ctz(ARM_HWCAP_ARM_TLS )] = "tls", | |
590 | [__builtin_ctz(ARM_HWCAP_ARM_VFPv4 )] = "vfpv4", | |
591 | [__builtin_ctz(ARM_HWCAP_ARM_IDIVA )] = "idiva", | |
592 | [__builtin_ctz(ARM_HWCAP_ARM_IDIVT )] = "idivt", | |
593 | [__builtin_ctz(ARM_HWCAP_ARM_VFPD32 )] = "vfpd32", | |
594 | [__builtin_ctz(ARM_HWCAP_ARM_LPAE )] = "lpae", | |
595 | [__builtin_ctz(ARM_HWCAP_ARM_EVTSTRM )] = "evtstrm", | |
23d7f14d PM |
596 | [__builtin_ctz(ARM_HWCAP_ARM_FPHP )] = "fphp", |
597 | [__builtin_ctz(ARM_HWCAP_ARM_ASIMDHP )] = "asimdhp", | |
598 | [__builtin_ctz(ARM_HWCAP_ARM_ASIMDDP )] = "asimddp", | |
599 | [__builtin_ctz(ARM_HWCAP_ARM_ASIMDFHM )] = "asimdfhm", | |
600 | [__builtin_ctz(ARM_HWCAP_ARM_ASIMDBF16)] = "asimdbf16", | |
601 | [__builtin_ctz(ARM_HWCAP_ARM_I8MM )] = "i8mm", | |
a55b9e72 HD |
602 | }; |
603 | ||
604 | return bit < ARRAY_SIZE(hwcap_str) ? hwcap_str[bit] : NULL; | |
605 | } | |
606 | ||
607 | const char *elf_hwcap2_str(uint32_t bit) | |
608 | { | |
609 | static const char *hwcap_str[] = { | |
610 | [__builtin_ctz(ARM_HWCAP2_ARM_AES )] = "aes", | |
611 | [__builtin_ctz(ARM_HWCAP2_ARM_PMULL)] = "pmull", | |
612 | [__builtin_ctz(ARM_HWCAP2_ARM_SHA1 )] = "sha1", | |
613 | [__builtin_ctz(ARM_HWCAP2_ARM_SHA2 )] = "sha2", | |
614 | [__builtin_ctz(ARM_HWCAP2_ARM_CRC32)] = "crc32", | |
23d7f14d PM |
615 | [__builtin_ctz(ARM_HWCAP2_ARM_SB )] = "sb", |
616 | [__builtin_ctz(ARM_HWCAP2_ARM_SSBS )] = "ssbs", | |
a55b9e72 HD |
617 | }; |
618 | ||
619 | return bit < ARRAY_SIZE(hwcap_str) ? hwcap_str[bit] : NULL; | |
620 | } | |
621 | ||
ad6919dc | 622 | #undef GET_FEATURE |
962fcbf2 | 623 | #undef GET_FEATURE_ID |
ad6919dc | 624 | |
13ec4ec3 RH |
625 | #define ELF_PLATFORM get_elf_platform() |
626 | ||
627 | static const char *get_elf_platform(void) | |
628 | { | |
b77af26e | 629 | CPUARMState *env = cpu_env(thread_cpu); |
13ec4ec3 | 630 | |
ee3eb3a7 | 631 | #if TARGET_BIG_ENDIAN |
13ec4ec3 RH |
632 | # define END "b" |
633 | #else | |
634 | # define END "l" | |
635 | #endif | |
636 | ||
637 | if (arm_feature(env, ARM_FEATURE_V8)) { | |
638 | return "v8" END; | |
639 | } else if (arm_feature(env, ARM_FEATURE_V7)) { | |
640 | if (arm_feature(env, ARM_FEATURE_M)) { | |
641 | return "v7m" END; | |
642 | } else { | |
643 | return "v7" END; | |
644 | } | |
645 | } else if (arm_feature(env, ARM_FEATURE_V6)) { | |
646 | return "v6" END; | |
647 | } else if (arm_feature(env, ARM_FEATURE_V5)) { | |
648 | return "v5" END; | |
649 | } else { | |
650 | return "v4" END; | |
651 | } | |
652 | ||
653 | #undef END | |
654 | } | |
655 | ||
24e76ff0 PM |
656 | #else |
657 | /* 64 bit ARM definitions */ | |
24e76ff0 | 658 | |
b597c3f7 | 659 | #define ELF_ARCH EM_AARCH64 |
24e76ff0 | 660 | #define ELF_CLASS ELFCLASS64 |
ee3eb3a7 | 661 | #if TARGET_BIG_ENDIAN |
e20e3ec9 RH |
662 | # define ELF_PLATFORM "aarch64_be" |
663 | #else | |
664 | # define ELF_PLATFORM "aarch64" | |
665 | #endif | |
24e76ff0 PM |
666 | |
667 | static inline void init_thread(struct target_pt_regs *regs, | |
668 | struct image_info *infop) | |
669 | { | |
670 | abi_long stack = infop->start_stack; | |
671 | memset(regs, 0, sizeof(*regs)); | |
672 | ||
673 | regs->pc = infop->entry & ~0x3ULL; | |
674 | regs->sp = stack; | |
675 | } | |
676 | ||
677 | #define ELF_NREG 34 | |
678 | typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG]; | |
679 | ||
680 | static void elf_core_copy_regs(target_elf_gregset_t *regs, | |
681 | const CPUARMState *env) | |
682 | { | |
683 | int i; | |
684 | ||
685 | for (i = 0; i < 32; i++) { | |
686 | (*regs)[i] = tswapreg(env->xregs[i]); | |
687 | } | |
688 | (*regs)[32] = tswapreg(env->pc); | |
689 | (*regs)[33] = tswapreg(pstate_read((CPUARMState *)env)); | |
690 | } | |
691 | ||
692 | #define USE_ELF_CORE_DUMP | |
693 | #define ELF_EXEC_PAGESIZE 4096 | |
694 | ||
695 | enum { | |
696 | ARM_HWCAP_A64_FP = 1 << 0, | |
697 | ARM_HWCAP_A64_ASIMD = 1 << 1, | |
698 | ARM_HWCAP_A64_EVTSTRM = 1 << 2, | |
699 | ARM_HWCAP_A64_AES = 1 << 3, | |
700 | ARM_HWCAP_A64_PMULL = 1 << 4, | |
701 | ARM_HWCAP_A64_SHA1 = 1 << 5, | |
702 | ARM_HWCAP_A64_SHA2 = 1 << 6, | |
703 | ARM_HWCAP_A64_CRC32 = 1 << 7, | |
955f56d4 AB |
704 | ARM_HWCAP_A64_ATOMICS = 1 << 8, |
705 | ARM_HWCAP_A64_FPHP = 1 << 9, | |
706 | ARM_HWCAP_A64_ASIMDHP = 1 << 10, | |
707 | ARM_HWCAP_A64_CPUID = 1 << 11, | |
708 | ARM_HWCAP_A64_ASIMDRDM = 1 << 12, | |
709 | ARM_HWCAP_A64_JSCVT = 1 << 13, | |
710 | ARM_HWCAP_A64_FCMA = 1 << 14, | |
711 | ARM_HWCAP_A64_LRCPC = 1 << 15, | |
712 | ARM_HWCAP_A64_DCPOP = 1 << 16, | |
713 | ARM_HWCAP_A64_SHA3 = 1 << 17, | |
714 | ARM_HWCAP_A64_SM3 = 1 << 18, | |
715 | ARM_HWCAP_A64_SM4 = 1 << 19, | |
716 | ARM_HWCAP_A64_ASIMDDP = 1 << 20, | |
717 | ARM_HWCAP_A64_SHA512 = 1 << 21, | |
718 | ARM_HWCAP_A64_SVE = 1 << 22, | |
0083a1fa RH |
719 | ARM_HWCAP_A64_ASIMDFHM = 1 << 23, |
720 | ARM_HWCAP_A64_DIT = 1 << 24, | |
721 | ARM_HWCAP_A64_USCAT = 1 << 25, | |
722 | ARM_HWCAP_A64_ILRCPC = 1 << 26, | |
723 | ARM_HWCAP_A64_FLAGM = 1 << 27, | |
724 | ARM_HWCAP_A64_SSBS = 1 << 28, | |
725 | ARM_HWCAP_A64_SB = 1 << 29, | |
726 | ARM_HWCAP_A64_PACA = 1 << 30, | |
727 | ARM_HWCAP_A64_PACG = 1UL << 31, | |
2041df4a RH |
728 | |
729 | ARM_HWCAP2_A64_DCPODP = 1 << 0, | |
730 | ARM_HWCAP2_A64_SVE2 = 1 << 1, | |
731 | ARM_HWCAP2_A64_SVEAES = 1 << 2, | |
732 | ARM_HWCAP2_A64_SVEPMULL = 1 << 3, | |
733 | ARM_HWCAP2_A64_SVEBITPERM = 1 << 4, | |
734 | ARM_HWCAP2_A64_SVESHA3 = 1 << 5, | |
735 | ARM_HWCAP2_A64_SVESM4 = 1 << 6, | |
736 | ARM_HWCAP2_A64_FLAGM2 = 1 << 7, | |
737 | ARM_HWCAP2_A64_FRINT = 1 << 8, | |
68948d18 RH |
738 | ARM_HWCAP2_A64_SVEI8MM = 1 << 9, |
739 | ARM_HWCAP2_A64_SVEF32MM = 1 << 10, | |
740 | ARM_HWCAP2_A64_SVEF64MM = 1 << 11, | |
741 | ARM_HWCAP2_A64_SVEBF16 = 1 << 12, | |
742 | ARM_HWCAP2_A64_I8MM = 1 << 13, | |
743 | ARM_HWCAP2_A64_BF16 = 1 << 14, | |
744 | ARM_HWCAP2_A64_DGH = 1 << 15, | |
745 | ARM_HWCAP2_A64_RNG = 1 << 16, | |
746 | ARM_HWCAP2_A64_BTI = 1 << 17, | |
747 | ARM_HWCAP2_A64_MTE = 1 << 18, | |
f9982cea RH |
748 | ARM_HWCAP2_A64_ECV = 1 << 19, |
749 | ARM_HWCAP2_A64_AFP = 1 << 20, | |
750 | ARM_HWCAP2_A64_RPRES = 1 << 21, | |
751 | ARM_HWCAP2_A64_MTE3 = 1 << 22, | |
752 | ARM_HWCAP2_A64_SME = 1 << 23, | |
753 | ARM_HWCAP2_A64_SME_I16I64 = 1 << 24, | |
754 | ARM_HWCAP2_A64_SME_F64F64 = 1 << 25, | |
755 | ARM_HWCAP2_A64_SME_I8I32 = 1 << 26, | |
756 | ARM_HWCAP2_A64_SME_F16F32 = 1 << 27, | |
757 | ARM_HWCAP2_A64_SME_B16F32 = 1 << 28, | |
758 | ARM_HWCAP2_A64_SME_F32F32 = 1 << 29, | |
759 | ARM_HWCAP2_A64_SME_FA64 = 1 << 30, | |
23d7f14d PM |
760 | ARM_HWCAP2_A64_WFXT = 1ULL << 31, |
761 | ARM_HWCAP2_A64_EBF16 = 1ULL << 32, | |
762 | ARM_HWCAP2_A64_SVE_EBF16 = 1ULL << 33, | |
763 | ARM_HWCAP2_A64_CSSC = 1ULL << 34, | |
764 | ARM_HWCAP2_A64_RPRFM = 1ULL << 35, | |
765 | ARM_HWCAP2_A64_SVE2P1 = 1ULL << 36, | |
766 | ARM_HWCAP2_A64_SME2 = 1ULL << 37, | |
767 | ARM_HWCAP2_A64_SME2P1 = 1ULL << 38, | |
768 | ARM_HWCAP2_A64_SME_I16I32 = 1ULL << 39, | |
769 | ARM_HWCAP2_A64_SME_BI32I32 = 1ULL << 40, | |
770 | ARM_HWCAP2_A64_SME_B16B16 = 1ULL << 41, | |
771 | ARM_HWCAP2_A64_SME_F16F16 = 1ULL << 42, | |
772 | ARM_HWCAP2_A64_MOPS = 1ULL << 43, | |
773 | ARM_HWCAP2_A64_HBC = 1ULL << 44, | |
24e76ff0 PM |
774 | }; |
775 | ||
2041df4a RH |
776 | #define ELF_HWCAP get_elf_hwcap() |
777 | #define ELF_HWCAP2 get_elf_hwcap2() | |
778 | ||
779 | #define GET_FEATURE_ID(feat, hwcap) \ | |
780 | do { if (cpu_isar_feature(feat, cpu)) { hwcaps |= hwcap; } } while (0) | |
24e76ff0 | 781 | |
a55b9e72 | 782 | uint32_t get_elf_hwcap(void) |
24e76ff0 PM |
783 | { |
784 | ARMCPU *cpu = ARM_CPU(thread_cpu); | |
785 | uint32_t hwcaps = 0; | |
786 | ||
787 | hwcaps |= ARM_HWCAP_A64_FP; | |
788 | hwcaps |= ARM_HWCAP_A64_ASIMD; | |
37020ff1 | 789 | hwcaps |= ARM_HWCAP_A64_CPUID; |
24e76ff0 PM |
790 | |
791 | /* probe for the extra features */ | |
962fcbf2 RH |
792 | |
793 | GET_FEATURE_ID(aa64_aes, ARM_HWCAP_A64_AES); | |
794 | GET_FEATURE_ID(aa64_pmull, ARM_HWCAP_A64_PMULL); | |
795 | GET_FEATURE_ID(aa64_sha1, ARM_HWCAP_A64_SHA1); | |
796 | GET_FEATURE_ID(aa64_sha256, ARM_HWCAP_A64_SHA2); | |
797 | GET_FEATURE_ID(aa64_sha512, ARM_HWCAP_A64_SHA512); | |
798 | GET_FEATURE_ID(aa64_crc32, ARM_HWCAP_A64_CRC32); | |
799 | GET_FEATURE_ID(aa64_sha3, ARM_HWCAP_A64_SHA3); | |
800 | GET_FEATURE_ID(aa64_sm3, ARM_HWCAP_A64_SM3); | |
801 | GET_FEATURE_ID(aa64_sm4, ARM_HWCAP_A64_SM4); | |
5763190f | 802 | GET_FEATURE_ID(aa64_fp16, ARM_HWCAP_A64_FPHP | ARM_HWCAP_A64_ASIMDHP); |
962fcbf2 | 803 | GET_FEATURE_ID(aa64_atomics, ARM_HWCAP_A64_ATOMICS); |
5cfea248 | 804 | GET_FEATURE_ID(aa64_lse2, ARM_HWCAP_A64_USCAT); |
962fcbf2 RH |
805 | GET_FEATURE_ID(aa64_rdm, ARM_HWCAP_A64_ASIMDRDM); |
806 | GET_FEATURE_ID(aa64_dp, ARM_HWCAP_A64_ASIMDDP); | |
807 | GET_FEATURE_ID(aa64_fcma, ARM_HWCAP_A64_FCMA); | |
cd208a1c | 808 | GET_FEATURE_ID(aa64_sve, ARM_HWCAP_A64_SVE); |
29d26ab2 | 809 | GET_FEATURE_ID(aa64_pauth, ARM_HWCAP_A64_PACA | ARM_HWCAP_A64_PACG); |
1c9af3a9 | 810 | GET_FEATURE_ID(aa64_fhm, ARM_HWCAP_A64_ASIMDFHM); |
5cfea248 | 811 | GET_FEATURE_ID(aa64_dit, ARM_HWCAP_A64_DIT); |
1c9af3a9 | 812 | GET_FEATURE_ID(aa64_jscvt, ARM_HWCAP_A64_JSCVT); |
9888bd1e | 813 | GET_FEATURE_ID(aa64_sb, ARM_HWCAP_A64_SB); |
b89d9c98 | 814 | GET_FEATURE_ID(aa64_condm_4, ARM_HWCAP_A64_FLAGM); |
0d57b499 | 815 | GET_FEATURE_ID(aa64_dcpop, ARM_HWCAP_A64_DCPOP); |
2677cf9f | 816 | GET_FEATURE_ID(aa64_rcpc_8_3, ARM_HWCAP_A64_LRCPC); |
a1229109 | 817 | GET_FEATURE_ID(aa64_rcpc_8_4, ARM_HWCAP_A64_ILRCPC); |
962fcbf2 | 818 | |
2041df4a RH |
819 | return hwcaps; |
820 | } | |
821 | ||
63c1b7de | 822 | uint64_t get_elf_hwcap2(void) |
2041df4a RH |
823 | { |
824 | ARMCPU *cpu = ARM_CPU(thread_cpu); | |
63c1b7de | 825 | uint64_t hwcaps = 0; |
2041df4a | 826 | |
0d57b499 | 827 | GET_FEATURE_ID(aa64_dcpodp, ARM_HWCAP2_A64_DCPODP); |
cdc8d8b2 RH |
828 | GET_FEATURE_ID(aa64_sve2, ARM_HWCAP2_A64_SVE2); |
829 | GET_FEATURE_ID(aa64_sve2_aes, ARM_HWCAP2_A64_SVEAES); | |
830 | GET_FEATURE_ID(aa64_sve2_pmull128, ARM_HWCAP2_A64_SVEPMULL); | |
831 | GET_FEATURE_ID(aa64_sve2_bitperm, ARM_HWCAP2_A64_SVEBITPERM); | |
832 | GET_FEATURE_ID(aa64_sve2_sha3, ARM_HWCAP2_A64_SVESHA3); | |
833 | GET_FEATURE_ID(aa64_sve2_sm4, ARM_HWCAP2_A64_SVESM4); | |
2041df4a RH |
834 | GET_FEATURE_ID(aa64_condm_5, ARM_HWCAP2_A64_FLAGM2); |
835 | GET_FEATURE_ID(aa64_frint, ARM_HWCAP2_A64_FRINT); | |
cdc8d8b2 RH |
836 | GET_FEATURE_ID(aa64_sve_i8mm, ARM_HWCAP2_A64_SVEI8MM); |
837 | GET_FEATURE_ID(aa64_sve_f32mm, ARM_HWCAP2_A64_SVEF32MM); | |
838 | GET_FEATURE_ID(aa64_sve_f64mm, ARM_HWCAP2_A64_SVEF64MM); | |
6c47a905 | 839 | GET_FEATURE_ID(aa64_sve_bf16, ARM_HWCAP2_A64_SVEBF16); |
cdc8d8b2 | 840 | GET_FEATURE_ID(aa64_i8mm, ARM_HWCAP2_A64_I8MM); |
6c47a905 | 841 | GET_FEATURE_ID(aa64_bf16, ARM_HWCAP2_A64_BF16); |
68948d18 RH |
842 | GET_FEATURE_ID(aa64_rndr, ARM_HWCAP2_A64_RNG); |
843 | GET_FEATURE_ID(aa64_bti, ARM_HWCAP2_A64_BTI); | |
844 | GET_FEATURE_ID(aa64_mte, ARM_HWCAP2_A64_MTE); | |
5cfea248 | 845 | GET_FEATURE_ID(aa64_mte3, ARM_HWCAP2_A64_MTE3); |
f9982cea RH |
846 | GET_FEATURE_ID(aa64_sme, (ARM_HWCAP2_A64_SME | |
847 | ARM_HWCAP2_A64_SME_F32F32 | | |
848 | ARM_HWCAP2_A64_SME_B16F32 | | |
849 | ARM_HWCAP2_A64_SME_F16F32 | | |
850 | ARM_HWCAP2_A64_SME_I8I32)); | |
851 | GET_FEATURE_ID(aa64_sme_f64f64, ARM_HWCAP2_A64_SME_F64F64); | |
852 | GET_FEATURE_ID(aa64_sme_i16i64, ARM_HWCAP2_A64_SME_I16I64); | |
853 | GET_FEATURE_ID(aa64_sme_fa64, ARM_HWCAP2_A64_SME_FA64); | |
3039b090 | 854 | GET_FEATURE_ID(aa64_hbc, ARM_HWCAP2_A64_HBC); |
706a92fb | 855 | GET_FEATURE_ID(aa64_mops, ARM_HWCAP2_A64_MOPS); |
24e76ff0 PM |
856 | |
857 | return hwcaps; | |
858 | } | |
859 | ||
a55b9e72 HD |
860 | const char *elf_hwcap_str(uint32_t bit) |
861 | { | |
862 | static const char *hwcap_str[] = { | |
863 | [__builtin_ctz(ARM_HWCAP_A64_FP )] = "fp", | |
864 | [__builtin_ctz(ARM_HWCAP_A64_ASIMD )] = "asimd", | |
865 | [__builtin_ctz(ARM_HWCAP_A64_EVTSTRM )] = "evtstrm", | |
866 | [__builtin_ctz(ARM_HWCAP_A64_AES )] = "aes", | |
867 | [__builtin_ctz(ARM_HWCAP_A64_PMULL )] = "pmull", | |
868 | [__builtin_ctz(ARM_HWCAP_A64_SHA1 )] = "sha1", | |
869 | [__builtin_ctz(ARM_HWCAP_A64_SHA2 )] = "sha2", | |
870 | [__builtin_ctz(ARM_HWCAP_A64_CRC32 )] = "crc32", | |
871 | [__builtin_ctz(ARM_HWCAP_A64_ATOMICS )] = "atomics", | |
872 | [__builtin_ctz(ARM_HWCAP_A64_FPHP )] = "fphp", | |
873 | [__builtin_ctz(ARM_HWCAP_A64_ASIMDHP )] = "asimdhp", | |
874 | [__builtin_ctz(ARM_HWCAP_A64_CPUID )] = "cpuid", | |
875 | [__builtin_ctz(ARM_HWCAP_A64_ASIMDRDM)] = "asimdrdm", | |
876 | [__builtin_ctz(ARM_HWCAP_A64_JSCVT )] = "jscvt", | |
877 | [__builtin_ctz(ARM_HWCAP_A64_FCMA )] = "fcma", | |
878 | [__builtin_ctz(ARM_HWCAP_A64_LRCPC )] = "lrcpc", | |
879 | [__builtin_ctz(ARM_HWCAP_A64_DCPOP )] = "dcpop", | |
880 | [__builtin_ctz(ARM_HWCAP_A64_SHA3 )] = "sha3", | |
881 | [__builtin_ctz(ARM_HWCAP_A64_SM3 )] = "sm3", | |
882 | [__builtin_ctz(ARM_HWCAP_A64_SM4 )] = "sm4", | |
883 | [__builtin_ctz(ARM_HWCAP_A64_ASIMDDP )] = "asimddp", | |
884 | [__builtin_ctz(ARM_HWCAP_A64_SHA512 )] = "sha512", | |
885 | [__builtin_ctz(ARM_HWCAP_A64_SVE )] = "sve", | |
886 | [__builtin_ctz(ARM_HWCAP_A64_ASIMDFHM)] = "asimdfhm", | |
887 | [__builtin_ctz(ARM_HWCAP_A64_DIT )] = "dit", | |
888 | [__builtin_ctz(ARM_HWCAP_A64_USCAT )] = "uscat", | |
889 | [__builtin_ctz(ARM_HWCAP_A64_ILRCPC )] = "ilrcpc", | |
890 | [__builtin_ctz(ARM_HWCAP_A64_FLAGM )] = "flagm", | |
891 | [__builtin_ctz(ARM_HWCAP_A64_SSBS )] = "ssbs", | |
892 | [__builtin_ctz(ARM_HWCAP_A64_SB )] = "sb", | |
893 | [__builtin_ctz(ARM_HWCAP_A64_PACA )] = "paca", | |
894 | [__builtin_ctz(ARM_HWCAP_A64_PACG )] = "pacg", | |
895 | }; | |
896 | ||
897 | return bit < ARRAY_SIZE(hwcap_str) ? hwcap_str[bit] : NULL; | |
898 | } | |
899 | ||
900 | const char *elf_hwcap2_str(uint32_t bit) | |
901 | { | |
902 | static const char *hwcap_str[] = { | |
903 | [__builtin_ctz(ARM_HWCAP2_A64_DCPODP )] = "dcpodp", | |
904 | [__builtin_ctz(ARM_HWCAP2_A64_SVE2 )] = "sve2", | |
905 | [__builtin_ctz(ARM_HWCAP2_A64_SVEAES )] = "sveaes", | |
906 | [__builtin_ctz(ARM_HWCAP2_A64_SVEPMULL )] = "svepmull", | |
907 | [__builtin_ctz(ARM_HWCAP2_A64_SVEBITPERM )] = "svebitperm", | |
908 | [__builtin_ctz(ARM_HWCAP2_A64_SVESHA3 )] = "svesha3", | |
909 | [__builtin_ctz(ARM_HWCAP2_A64_SVESM4 )] = "svesm4", | |
910 | [__builtin_ctz(ARM_HWCAP2_A64_FLAGM2 )] = "flagm2", | |
911 | [__builtin_ctz(ARM_HWCAP2_A64_FRINT )] = "frint", | |
912 | [__builtin_ctz(ARM_HWCAP2_A64_SVEI8MM )] = "svei8mm", | |
913 | [__builtin_ctz(ARM_HWCAP2_A64_SVEF32MM )] = "svef32mm", | |
914 | [__builtin_ctz(ARM_HWCAP2_A64_SVEF64MM )] = "svef64mm", | |
915 | [__builtin_ctz(ARM_HWCAP2_A64_SVEBF16 )] = "svebf16", | |
916 | [__builtin_ctz(ARM_HWCAP2_A64_I8MM )] = "i8mm", | |
917 | [__builtin_ctz(ARM_HWCAP2_A64_BF16 )] = "bf16", | |
918 | [__builtin_ctz(ARM_HWCAP2_A64_DGH )] = "dgh", | |
919 | [__builtin_ctz(ARM_HWCAP2_A64_RNG )] = "rng", | |
920 | [__builtin_ctz(ARM_HWCAP2_A64_BTI )] = "bti", | |
921 | [__builtin_ctz(ARM_HWCAP2_A64_MTE )] = "mte", | |
922 | [__builtin_ctz(ARM_HWCAP2_A64_ECV )] = "ecv", | |
923 | [__builtin_ctz(ARM_HWCAP2_A64_AFP )] = "afp", | |
924 | [__builtin_ctz(ARM_HWCAP2_A64_RPRES )] = "rpres", | |
925 | [__builtin_ctz(ARM_HWCAP2_A64_MTE3 )] = "mte3", | |
926 | [__builtin_ctz(ARM_HWCAP2_A64_SME )] = "sme", | |
e2e40a77 PM |
927 | [__builtin_ctz(ARM_HWCAP2_A64_SME_I16I64 )] = "smei16i64", |
928 | [__builtin_ctz(ARM_HWCAP2_A64_SME_F64F64 )] = "smef64f64", | |
929 | [__builtin_ctz(ARM_HWCAP2_A64_SME_I8I32 )] = "smei8i32", | |
930 | [__builtin_ctz(ARM_HWCAP2_A64_SME_F16F32 )] = "smef16f32", | |
931 | [__builtin_ctz(ARM_HWCAP2_A64_SME_B16F32 )] = "smeb16f32", | |
932 | [__builtin_ctz(ARM_HWCAP2_A64_SME_F32F32 )] = "smef32f32", | |
933 | [__builtin_ctz(ARM_HWCAP2_A64_SME_FA64 )] = "smefa64", | |
23d7f14d PM |
934 | [__builtin_ctz(ARM_HWCAP2_A64_WFXT )] = "wfxt", |
935 | [__builtin_ctzll(ARM_HWCAP2_A64_EBF16 )] = "ebf16", | |
936 | [__builtin_ctzll(ARM_HWCAP2_A64_SVE_EBF16 )] = "sveebf16", | |
937 | [__builtin_ctzll(ARM_HWCAP2_A64_CSSC )] = "cssc", | |
938 | [__builtin_ctzll(ARM_HWCAP2_A64_RPRFM )] = "rprfm", | |
939 | [__builtin_ctzll(ARM_HWCAP2_A64_SVE2P1 )] = "sve2p1", | |
940 | [__builtin_ctzll(ARM_HWCAP2_A64_SME2 )] = "sme2", | |
941 | [__builtin_ctzll(ARM_HWCAP2_A64_SME2P1 )] = "sme2p1", | |
942 | [__builtin_ctzll(ARM_HWCAP2_A64_SME_I16I32 )] = "smei16i32", | |
943 | [__builtin_ctzll(ARM_HWCAP2_A64_SME_BI32I32)] = "smebi32i32", | |
944 | [__builtin_ctzll(ARM_HWCAP2_A64_SME_B16B16 )] = "smeb16b16", | |
945 | [__builtin_ctzll(ARM_HWCAP2_A64_SME_F16F16 )] = "smef16f16", | |
946 | [__builtin_ctzll(ARM_HWCAP2_A64_MOPS )] = "mops", | |
947 | [__builtin_ctzll(ARM_HWCAP2_A64_HBC )] = "hbc", | |
a55b9e72 HD |
948 | }; |
949 | ||
950 | return bit < ARRAY_SIZE(hwcap_str) ? hwcap_str[bit] : NULL; | |
951 | } | |
952 | ||
2041df4a RH |
953 | #undef GET_FEATURE_ID |
954 | ||
24e76ff0 | 955 | #endif /* not TARGET_AARCH64 */ |
a9f495b9 | 956 | |
ee95fae0 RH |
957 | #if TARGET_BIG_ENDIAN |
958 | # define VDSO_HEADER "vdso-be.c.inc" | |
959 | #else | |
960 | # define VDSO_HEADER "vdso-le.c.inc" | |
961 | #endif | |
962 | ||
24e76ff0 | 963 | #endif /* TARGET_ARM */ |
30ac07d4 | 964 | |
853d6f7a | 965 | #ifdef TARGET_SPARC |
a315a145 | 966 | #ifdef TARGET_SPARC64 |
853d6f7a | 967 | |
cf973e46 AT |
968 | #define ELF_HWCAP (HWCAP_SPARC_FLUSH | HWCAP_SPARC_STBAR | HWCAP_SPARC_SWAP \ |
969 | | HWCAP_SPARC_MULDIV | HWCAP_SPARC_V9) | |
992f48a0 | 970 | #ifndef TARGET_ABI32 |
cb33da57 | 971 | #define elf_check_arch(x) ( (x) == EM_SPARCV9 || (x) == EM_SPARC32PLUS ) |
992f48a0 BS |
972 | #else |
973 | #define elf_check_arch(x) ( (x) == EM_SPARC32PLUS || (x) == EM_SPARC ) | |
974 | #endif | |
853d6f7a | 975 | |
a315a145 | 976 | #define ELF_CLASS ELFCLASS64 |
5ef54116 | 977 | #define ELF_ARCH EM_SPARCV9 |
a315a145 | 978 | #else |
cf973e46 AT |
979 | #define ELF_HWCAP (HWCAP_SPARC_FLUSH | HWCAP_SPARC_STBAR | HWCAP_SPARC_SWAP \ |
980 | | HWCAP_SPARC_MULDIV) | |
853d6f7a | 981 | #define ELF_CLASS ELFCLASS32 |
853d6f7a | 982 | #define ELF_ARCH EM_SPARC |
089a2256 | 983 | #endif /* TARGET_SPARC64 */ |
853d6f7a | 984 | |
d97ef72e RH |
985 | static inline void init_thread(struct target_pt_regs *regs, |
986 | struct image_info *infop) | |
853d6f7a | 987 | { |
089a2256 | 988 | /* Note that target_cpu_copy_regs does not read psr/tstate. */ |
f5155289 FB |
989 | regs->pc = infop->entry; |
990 | regs->npc = regs->pc + 4; | |
991 | regs->y = 0; | |
089a2256 RH |
992 | regs->u_regs[14] = (infop->start_stack - 16 * sizeof(abi_ulong) |
993 | - TARGET_STACK_BIAS); | |
853d6f7a | 994 | } |
089a2256 | 995 | #endif /* TARGET_SPARC */ |
853d6f7a | 996 | |
67867308 FB |
997 | #ifdef TARGET_PPC |
998 | ||
4ecd4d16 | 999 | #define ELF_MACHINE PPC_ELF_MACHINE |
67867308 | 1000 | |
74154d7e | 1001 | #if defined(TARGET_PPC64) |
84409ddb JM |
1002 | |
1003 | #define elf_check_arch(x) ( (x) == EM_PPC64 ) | |
1004 | ||
d97ef72e | 1005 | #define ELF_CLASS ELFCLASS64 |
84409ddb JM |
1006 | |
1007 | #else | |
1008 | ||
d97ef72e | 1009 | #define ELF_CLASS ELFCLASS32 |
872f3d04 | 1010 | #define EXSTACK_DEFAULT true |
84409ddb JM |
1011 | |
1012 | #endif | |
1013 | ||
d97ef72e | 1014 | #define ELF_ARCH EM_PPC |
67867308 | 1015 | |
df84e4f3 NF |
1016 | /* Feature masks for the Aux Vector Hardware Capabilities (AT_HWCAP). |
1017 | See arch/powerpc/include/asm/cputable.h. */ | |
1018 | enum { | |
3efa9a67 | 1019 | QEMU_PPC_FEATURE_32 = 0x80000000, |
1020 | QEMU_PPC_FEATURE_64 = 0x40000000, | |
1021 | QEMU_PPC_FEATURE_601_INSTR = 0x20000000, | |
1022 | QEMU_PPC_FEATURE_HAS_ALTIVEC = 0x10000000, | |
1023 | QEMU_PPC_FEATURE_HAS_FPU = 0x08000000, | |
1024 | QEMU_PPC_FEATURE_HAS_MMU = 0x04000000, | |
1025 | QEMU_PPC_FEATURE_HAS_4xxMAC = 0x02000000, | |
1026 | QEMU_PPC_FEATURE_UNIFIED_CACHE = 0x01000000, | |
1027 | QEMU_PPC_FEATURE_HAS_SPE = 0x00800000, | |
1028 | QEMU_PPC_FEATURE_HAS_EFP_SINGLE = 0x00400000, | |
1029 | QEMU_PPC_FEATURE_HAS_EFP_DOUBLE = 0x00200000, | |
1030 | QEMU_PPC_FEATURE_NO_TB = 0x00100000, | |
1031 | QEMU_PPC_FEATURE_POWER4 = 0x00080000, | |
1032 | QEMU_PPC_FEATURE_POWER5 = 0x00040000, | |
1033 | QEMU_PPC_FEATURE_POWER5_PLUS = 0x00020000, | |
1034 | QEMU_PPC_FEATURE_CELL = 0x00010000, | |
1035 | QEMU_PPC_FEATURE_BOOKE = 0x00008000, | |
1036 | QEMU_PPC_FEATURE_SMT = 0x00004000, | |
1037 | QEMU_PPC_FEATURE_ICACHE_SNOOP = 0x00002000, | |
1038 | QEMU_PPC_FEATURE_ARCH_2_05 = 0x00001000, | |
1039 | QEMU_PPC_FEATURE_PA6T = 0x00000800, | |
1040 | QEMU_PPC_FEATURE_HAS_DFP = 0x00000400, | |
1041 | QEMU_PPC_FEATURE_POWER6_EXT = 0x00000200, | |
1042 | QEMU_PPC_FEATURE_ARCH_2_06 = 0x00000100, | |
1043 | QEMU_PPC_FEATURE_HAS_VSX = 0x00000080, | |
1044 | QEMU_PPC_FEATURE_PSERIES_PERFMON_COMPAT = 0x00000040, | |
1045 | ||
1046 | QEMU_PPC_FEATURE_TRUE_LE = 0x00000002, | |
1047 | QEMU_PPC_FEATURE_PPC_LE = 0x00000001, | |
a60438dd TM |
1048 | |
1049 | /* Feature definitions in AT_HWCAP2. */ | |
1050 | QEMU_PPC_FEATURE2_ARCH_2_07 = 0x80000000, /* ISA 2.07 */ | |
1051 | QEMU_PPC_FEATURE2_HAS_HTM = 0x40000000, /* Hardware Transactional Memory */ | |
1052 | QEMU_PPC_FEATURE2_HAS_DSCR = 0x20000000, /* Data Stream Control Register */ | |
1053 | QEMU_PPC_FEATURE2_HAS_EBB = 0x10000000, /* Event Base Branching */ | |
1054 | QEMU_PPC_FEATURE2_HAS_ISEL = 0x08000000, /* Integer Select */ | |
1055 | QEMU_PPC_FEATURE2_HAS_TAR = 0x04000000, /* Target Address Register */ | |
24c373ec LV |
1056 | QEMU_PPC_FEATURE2_VEC_CRYPTO = 0x02000000, |
1057 | QEMU_PPC_FEATURE2_HTM_NOSC = 0x01000000, | |
be0c46d4 | 1058 | QEMU_PPC_FEATURE2_ARCH_3_00 = 0x00800000, /* ISA 3.00 */ |
24c373ec LV |
1059 | QEMU_PPC_FEATURE2_HAS_IEEE128 = 0x00400000, /* VSX IEEE Bin Float 128-bit */ |
1060 | QEMU_PPC_FEATURE2_DARN = 0x00200000, /* darn random number insn */ | |
1061 | QEMU_PPC_FEATURE2_SCV = 0x00100000, /* scv syscall */ | |
1062 | QEMU_PPC_FEATURE2_HTM_NO_SUSPEND = 0x00080000, /* TM w/o suspended state */ | |
96c343cc JS |
1063 | QEMU_PPC_FEATURE2_ARCH_3_1 = 0x00040000, /* ISA 3.1 */ |
1064 | QEMU_PPC_FEATURE2_MMA = 0x00020000, /* Matrix-Multiply Assist */ | |
df84e4f3 NF |
1065 | }; |
1066 | ||
1067 | #define ELF_HWCAP get_elf_hwcap() | |
1068 | ||
1069 | static uint32_t get_elf_hwcap(void) | |
1070 | { | |
a2247f8e | 1071 | PowerPCCPU *cpu = POWERPC_CPU(thread_cpu); |
df84e4f3 NF |
1072 | uint32_t features = 0; |
1073 | ||
1074 | /* We don't have to be terribly complete here; the high points are | |
1075 | Altivec/FP/SPE support. Anything else is just a bonus. */ | |
d97ef72e | 1076 | #define GET_FEATURE(flag, feature) \ |
a2247f8e | 1077 | do { if (cpu->env.insns_flags & flag) { features |= feature; } } while (0) |
58eb5308 MW |
1078 | #define GET_FEATURE2(flags, feature) \ |
1079 | do { \ | |
1080 | if ((cpu->env.insns_flags2 & flags) == flags) { \ | |
1081 | features |= feature; \ | |
1082 | } \ | |
1083 | } while (0) | |
3efa9a67 | 1084 | GET_FEATURE(PPC_64B, QEMU_PPC_FEATURE_64); |
1085 | GET_FEATURE(PPC_FLOAT, QEMU_PPC_FEATURE_HAS_FPU); | |
1086 | GET_FEATURE(PPC_ALTIVEC, QEMU_PPC_FEATURE_HAS_ALTIVEC); | |
1087 | GET_FEATURE(PPC_SPE, QEMU_PPC_FEATURE_HAS_SPE); | |
1088 | GET_FEATURE(PPC_SPE_SINGLE, QEMU_PPC_FEATURE_HAS_EFP_SINGLE); | |
1089 | GET_FEATURE(PPC_SPE_DOUBLE, QEMU_PPC_FEATURE_HAS_EFP_DOUBLE); | |
1090 | GET_FEATURE(PPC_BOOKE, QEMU_PPC_FEATURE_BOOKE); | |
1091 | GET_FEATURE(PPC_405_MAC, QEMU_PPC_FEATURE_HAS_4xxMAC); | |
0e019746 TM |
1092 | GET_FEATURE2(PPC2_DFP, QEMU_PPC_FEATURE_HAS_DFP); |
1093 | GET_FEATURE2(PPC2_VSX, QEMU_PPC_FEATURE_HAS_VSX); | |
1094 | GET_FEATURE2((PPC2_PERM_ISA206 | PPC2_DIVE_ISA206 | PPC2_ATOMIC_ISA206 | | |
1095 | PPC2_FP_CVT_ISA206 | PPC2_FP_TST_ISA206), | |
1096 | QEMU_PPC_FEATURE_ARCH_2_06); | |
df84e4f3 | 1097 | #undef GET_FEATURE |
0e019746 | 1098 | #undef GET_FEATURE2 |
df84e4f3 NF |
1099 | |
1100 | return features; | |
1101 | } | |
1102 | ||
a60438dd TM |
1103 | #define ELF_HWCAP2 get_elf_hwcap2() |
1104 | ||
1105 | static uint32_t get_elf_hwcap2(void) | |
1106 | { | |
1107 | PowerPCCPU *cpu = POWERPC_CPU(thread_cpu); | |
1108 | uint32_t features = 0; | |
1109 | ||
1110 | #define GET_FEATURE(flag, feature) \ | |
1111 | do { if (cpu->env.insns_flags & flag) { features |= feature; } } while (0) | |
1112 | #define GET_FEATURE2(flag, feature) \ | |
1113 | do { if (cpu->env.insns_flags2 & flag) { features |= feature; } } while (0) | |
1114 | ||
1115 | GET_FEATURE(PPC_ISEL, QEMU_PPC_FEATURE2_HAS_ISEL); | |
1116 | GET_FEATURE2(PPC2_BCTAR_ISA207, QEMU_PPC_FEATURE2_HAS_TAR); | |
1117 | GET_FEATURE2((PPC2_BCTAR_ISA207 | PPC2_LSQ_ISA207 | PPC2_ALTIVEC_207 | | |
24c373ec LV |
1118 | PPC2_ISA207S), QEMU_PPC_FEATURE2_ARCH_2_07 | |
1119 | QEMU_PPC_FEATURE2_VEC_CRYPTO); | |
1120 | GET_FEATURE2(PPC2_ISA300, QEMU_PPC_FEATURE2_ARCH_3_00 | | |
8a589aeb | 1121 | QEMU_PPC_FEATURE2_DARN | QEMU_PPC_FEATURE2_HAS_IEEE128); |
96c343cc JS |
1122 | GET_FEATURE2(PPC2_ISA310, QEMU_PPC_FEATURE2_ARCH_3_1 | |
1123 | QEMU_PPC_FEATURE2_MMA); | |
a60438dd TM |
1124 | |
1125 | #undef GET_FEATURE | |
1126 | #undef GET_FEATURE2 | |
1127 | ||
1128 | return features; | |
1129 | } | |
1130 | ||
f5155289 FB |
1131 | /* |
1132 | * The requirements here are: | |
1133 | * - keep the final alignment of sp (sp & 0xf) | |
1134 | * - make sure the 32-bit value at the first 16 byte aligned position of | |
1135 | * AUXV is greater than 16 for glibc compatibility. | |
1136 | * AT_IGNOREPPC is used for that. | |
1137 | * - for compatibility with glibc ARCH_DLINFO must always be defined on PPC, | |
1138 | * even if DLINFO_ARCH_ITEMS goes to zero or is undefined. | |
1139 | */ | |
0bccf03d | 1140 | #define DLINFO_ARCH_ITEMS 5 |
d97ef72e RH |
1141 | #define ARCH_DLINFO \ |
1142 | do { \ | |
623e250a | 1143 | PowerPCCPU *cpu = POWERPC_CPU(thread_cpu); \ |
d97ef72e | 1144 | /* \ |
82991bed PM |
1145 | * Handle glibc compatibility: these magic entries must \ |
1146 | * be at the lowest addresses in the final auxv. \ | |
d97ef72e RH |
1147 | */ \ |
1148 | NEW_AUX_ENT(AT_IGNOREPPC, AT_IGNOREPPC); \ | |
1149 | NEW_AUX_ENT(AT_IGNOREPPC, AT_IGNOREPPC); \ | |
82991bed PM |
1150 | NEW_AUX_ENT(AT_DCACHEBSIZE, cpu->env.dcache_line_size); \ |
1151 | NEW_AUX_ENT(AT_ICACHEBSIZE, cpu->env.icache_line_size); \ | |
1152 | NEW_AUX_ENT(AT_UCACHEBSIZE, 0); \ | |
d97ef72e | 1153 | } while (0) |
f5155289 | 1154 | |
67867308 FB |
1155 | static inline void init_thread(struct target_pt_regs *_regs, struct image_info *infop) |
1156 | { | |
67867308 | 1157 | _regs->gpr[1] = infop->start_stack; |
74154d7e | 1158 | #if defined(TARGET_PPC64) |
d90b94cd | 1159 | if (get_ppc64_abi(infop) < 2) { |
2ccf97ec PM |
1160 | uint64_t val; |
1161 | get_user_u64(val, infop->entry + 8); | |
1162 | _regs->gpr[2] = val + infop->load_bias; | |
1163 | get_user_u64(val, infop->entry); | |
1164 | infop->entry = val + infop->load_bias; | |
d90b94cd DK |
1165 | } else { |
1166 | _regs->gpr[12] = infop->entry; /* r12 set to global entry address */ | |
1167 | } | |
84409ddb | 1168 | #endif |
67867308 FB |
1169 | _regs->nip = infop->entry; |
1170 | } | |
1171 | ||
e2f3e741 NF |
1172 | /* See linux kernel: arch/powerpc/include/asm/elf.h. */ |
1173 | #define ELF_NREG 48 | |
1174 | typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG]; | |
1175 | ||
05390248 | 1176 | static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUPPCState *env) |
e2f3e741 NF |
1177 | { |
1178 | int i; | |
1179 | target_ulong ccr = 0; | |
1180 | ||
1181 | for (i = 0; i < ARRAY_SIZE(env->gpr); i++) { | |
86cd7b2d | 1182 | (*regs)[i] = tswapreg(env->gpr[i]); |
e2f3e741 NF |
1183 | } |
1184 | ||
86cd7b2d PB |
1185 | (*regs)[32] = tswapreg(env->nip); |
1186 | (*regs)[33] = tswapreg(env->msr); | |
1187 | (*regs)[35] = tswapreg(env->ctr); | |
1188 | (*regs)[36] = tswapreg(env->lr); | |
10de0521 | 1189 | (*regs)[37] = tswapreg(cpu_read_xer(env)); |
e2f3e741 | 1190 | |
2060436a | 1191 | ccr = ppc_get_cr(env); |
86cd7b2d | 1192 | (*regs)[38] = tswapreg(ccr); |
e2f3e741 NF |
1193 | } |
1194 | ||
1195 | #define USE_ELF_CORE_DUMP | |
d97ef72e | 1196 | #define ELF_EXEC_PAGESIZE 4096 |
67867308 | 1197 | |
e34136d9 RH |
1198 | #ifndef TARGET_PPC64 |
1199 | # define VDSO_HEADER "vdso-32.c.inc" | |
1200 | #elif TARGET_BIG_ENDIAN | |
1201 | # define VDSO_HEADER "vdso-64.c.inc" | |
1202 | #else | |
1203 | # define VDSO_HEADER "vdso-64le.c.inc" | |
1204 | #endif | |
1205 | ||
67867308 FB |
1206 | #endif |
1207 | ||
3418fe25 SG |
1208 | #ifdef TARGET_LOONGARCH64 |
1209 | ||
3418fe25 SG |
1210 | #define ELF_CLASS ELFCLASS64 |
1211 | #define ELF_ARCH EM_LOONGARCH | |
872f3d04 | 1212 | #define EXSTACK_DEFAULT true |
3418fe25 SG |
1213 | |
1214 | #define elf_check_arch(x) ((x) == EM_LOONGARCH) | |
1215 | ||
00cc2934 RH |
1216 | #define VDSO_HEADER "vdso.c.inc" |
1217 | ||
3418fe25 SG |
1218 | static inline void init_thread(struct target_pt_regs *regs, |
1219 | struct image_info *infop) | |
1220 | { | |
1221 | /*Set crmd PG,DA = 1,0 */ | |
1222 | regs->csr.crmd = 2 << 3; | |
1223 | regs->csr.era = infop->entry; | |
1224 | regs->regs[3] = infop->start_stack; | |
1225 | } | |
1226 | ||
1227 | /* See linux kernel: arch/loongarch/include/asm/elf.h */ | |
1228 | #define ELF_NREG 45 | |
1229 | typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG]; | |
1230 | ||
1231 | enum { | |
1232 | TARGET_EF_R0 = 0, | |
1233 | TARGET_EF_CSR_ERA = TARGET_EF_R0 + 33, | |
1234 | TARGET_EF_CSR_BADV = TARGET_EF_R0 + 34, | |
1235 | }; | |
1236 | ||
1237 | static void elf_core_copy_regs(target_elf_gregset_t *regs, | |
1238 | const CPULoongArchState *env) | |
1239 | { | |
1240 | int i; | |
1241 | ||
1242 | (*regs)[TARGET_EF_R0] = 0; | |
1243 | ||
1244 | for (i = 1; i < ARRAY_SIZE(env->gpr); i++) { | |
1245 | (*regs)[TARGET_EF_R0 + i] = tswapreg(env->gpr[i]); | |
1246 | } | |
1247 | ||
1248 | (*regs)[TARGET_EF_CSR_ERA] = tswapreg(env->pc); | |
1249 | (*regs)[TARGET_EF_CSR_BADV] = tswapreg(env->CSR_BADV); | |
1250 | } | |
1251 | ||
1252 | #define USE_ELF_CORE_DUMP | |
1253 | #define ELF_EXEC_PAGESIZE 4096 | |
1254 | ||
1255 | #define ELF_HWCAP get_elf_hwcap() | |
1256 | ||
1257 | /* See arch/loongarch/include/uapi/asm/hwcap.h */ | |
1258 | enum { | |
1259 | HWCAP_LOONGARCH_CPUCFG = (1 << 0), | |
1260 | HWCAP_LOONGARCH_LAM = (1 << 1), | |
1261 | HWCAP_LOONGARCH_UAL = (1 << 2), | |
1262 | HWCAP_LOONGARCH_FPU = (1 << 3), | |
1263 | HWCAP_LOONGARCH_LSX = (1 << 4), | |
1264 | HWCAP_LOONGARCH_LASX = (1 << 5), | |
1265 | HWCAP_LOONGARCH_CRC32 = (1 << 6), | |
1266 | HWCAP_LOONGARCH_COMPLEX = (1 << 7), | |
1267 | HWCAP_LOONGARCH_CRYPTO = (1 << 8), | |
1268 | HWCAP_LOONGARCH_LVZ = (1 << 9), | |
1269 | HWCAP_LOONGARCH_LBT_X86 = (1 << 10), | |
1270 | HWCAP_LOONGARCH_LBT_ARM = (1 << 11), | |
1271 | HWCAP_LOONGARCH_LBT_MIPS = (1 << 12), | |
1272 | }; | |
1273 | ||
1274 | static uint32_t get_elf_hwcap(void) | |
1275 | { | |
1276 | LoongArchCPU *cpu = LOONGARCH_CPU(thread_cpu); | |
1277 | uint32_t hwcaps = 0; | |
1278 | ||
1279 | hwcaps |= HWCAP_LOONGARCH_CRC32; | |
1280 | ||
1281 | if (FIELD_EX32(cpu->env.cpucfg[1], CPUCFG1, UAL)) { | |
1282 | hwcaps |= HWCAP_LOONGARCH_UAL; | |
1283 | } | |
1284 | ||
1285 | if (FIELD_EX32(cpu->env.cpucfg[2], CPUCFG2, FP)) { | |
1286 | hwcaps |= HWCAP_LOONGARCH_FPU; | |
1287 | } | |
1288 | ||
1289 | if (FIELD_EX32(cpu->env.cpucfg[2], CPUCFG2, LAM)) { | |
1290 | hwcaps |= HWCAP_LOONGARCH_LAM; | |
1291 | } | |
1292 | ||
a9f6004f JC |
1293 | if (FIELD_EX32(cpu->env.cpucfg[2], CPUCFG2, LSX)) { |
1294 | hwcaps |= HWCAP_LOONGARCH_LSX; | |
1295 | } | |
1296 | ||
1297 | if (FIELD_EX32(cpu->env.cpucfg[2], CPUCFG2, LASX)) { | |
1298 | hwcaps |= HWCAP_LOONGARCH_LASX; | |
1299 | } | |
1300 | ||
3418fe25 SG |
1301 | return hwcaps; |
1302 | } | |
1303 | ||
1304 | #define ELF_PLATFORM "loongarch" | |
1305 | ||
1306 | #endif /* TARGET_LOONGARCH64 */ | |
1307 | ||
048f6b4d FB |
1308 | #ifdef TARGET_MIPS |
1309 | ||
388bb21a TS |
1310 | #ifdef TARGET_MIPS64 |
1311 | #define ELF_CLASS ELFCLASS64 | |
1312 | #else | |
048f6b4d | 1313 | #define ELF_CLASS ELFCLASS32 |
388bb21a | 1314 | #endif |
048f6b4d | 1315 | #define ELF_ARCH EM_MIPS |
872f3d04 | 1316 | #define EXSTACK_DEFAULT true |
048f6b4d | 1317 | |
ace3d654 CMAB |
1318 | #ifdef TARGET_ABI_MIPSN32 |
1319 | #define elf_check_abi(x) ((x) & EF_MIPS_ABI2) | |
1320 | #else | |
1321 | #define elf_check_abi(x) (!((x) & EF_MIPS_ABI2)) | |
1322 | #endif | |
1323 | ||
fbf47c18 JY |
1324 | #define ELF_BASE_PLATFORM get_elf_base_platform() |
1325 | ||
1326 | #define MATCH_PLATFORM_INSN(_flags, _base_platform) \ | |
1327 | do { if ((cpu->env.insn_flags & (_flags)) == _flags) \ | |
1328 | { return _base_platform; } } while (0) | |
1329 | ||
1330 | static const char *get_elf_base_platform(void) | |
1331 | { | |
1332 | MIPSCPU *cpu = MIPS_CPU(thread_cpu); | |
1333 | ||
1334 | /* 64 bit ISAs goes first */ | |
1335 | MATCH_PLATFORM_INSN(CPU_MIPS64R6, "mips64r6"); | |
1336 | MATCH_PLATFORM_INSN(CPU_MIPS64R5, "mips64r5"); | |
1337 | MATCH_PLATFORM_INSN(CPU_MIPS64R2, "mips64r2"); | |
1338 | MATCH_PLATFORM_INSN(CPU_MIPS64R1, "mips64"); | |
1339 | MATCH_PLATFORM_INSN(CPU_MIPS5, "mips5"); | |
1340 | MATCH_PLATFORM_INSN(CPU_MIPS4, "mips4"); | |
1341 | MATCH_PLATFORM_INSN(CPU_MIPS3, "mips3"); | |
1342 | ||
1343 | /* 32 bit ISAs */ | |
1344 | MATCH_PLATFORM_INSN(CPU_MIPS32R6, "mips32r6"); | |
1345 | MATCH_PLATFORM_INSN(CPU_MIPS32R5, "mips32r5"); | |
1346 | MATCH_PLATFORM_INSN(CPU_MIPS32R2, "mips32r2"); | |
1347 | MATCH_PLATFORM_INSN(CPU_MIPS32R1, "mips32"); | |
1348 | MATCH_PLATFORM_INSN(CPU_MIPS2, "mips2"); | |
1349 | ||
1350 | /* Fallback */ | |
1351 | return "mips"; | |
1352 | } | |
1353 | #undef MATCH_PLATFORM_INSN | |
1354 | ||
d97ef72e RH |
1355 | static inline void init_thread(struct target_pt_regs *regs, |
1356 | struct image_info *infop) | |
048f6b4d | 1357 | { |
623a930e | 1358 | regs->cp0_status = 2 << CP0St_KSU; |
048f6b4d FB |
1359 | regs->cp0_epc = infop->entry; |
1360 | regs->regs[29] = infop->start_stack; | |
1361 | } | |
1362 | ||
51e52606 NF |
1363 | /* See linux kernel: arch/mips/include/asm/elf.h. */ |
1364 | #define ELF_NREG 45 | |
1365 | typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG]; | |
1366 | ||
1367 | /* See linux kernel: arch/mips/include/asm/reg.h. */ | |
1368 | enum { | |
1369 | #ifdef TARGET_MIPS64 | |
1370 | TARGET_EF_R0 = 0, | |
1371 | #else | |
1372 | TARGET_EF_R0 = 6, | |
1373 | #endif | |
1374 | TARGET_EF_R26 = TARGET_EF_R0 + 26, | |
1375 | TARGET_EF_R27 = TARGET_EF_R0 + 27, | |
1376 | TARGET_EF_LO = TARGET_EF_R0 + 32, | |
1377 | TARGET_EF_HI = TARGET_EF_R0 + 33, | |
1378 | TARGET_EF_CP0_EPC = TARGET_EF_R0 + 34, | |
1379 | TARGET_EF_CP0_BADVADDR = TARGET_EF_R0 + 35, | |
1380 | TARGET_EF_CP0_STATUS = TARGET_EF_R0 + 36, | |
1381 | TARGET_EF_CP0_CAUSE = TARGET_EF_R0 + 37 | |
1382 | }; | |
1383 | ||
1384 | /* See linux kernel: arch/mips/kernel/process.c:elf_dump_regs. */ | |
05390248 | 1385 | static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUMIPSState *env) |
51e52606 NF |
1386 | { |
1387 | int i; | |
1388 | ||
1389 | for (i = 0; i < TARGET_EF_R0; i++) { | |
1390 | (*regs)[i] = 0; | |
1391 | } | |
1392 | (*regs)[TARGET_EF_R0] = 0; | |
1393 | ||
1394 | for (i = 1; i < ARRAY_SIZE(env->active_tc.gpr); i++) { | |
a29f998d | 1395 | (*regs)[TARGET_EF_R0 + i] = tswapreg(env->active_tc.gpr[i]); |
51e52606 NF |
1396 | } |
1397 | ||
1398 | (*regs)[TARGET_EF_R26] = 0; | |
1399 | (*regs)[TARGET_EF_R27] = 0; | |
a29f998d PB |
1400 | (*regs)[TARGET_EF_LO] = tswapreg(env->active_tc.LO[0]); |
1401 | (*regs)[TARGET_EF_HI] = tswapreg(env->active_tc.HI[0]); | |
1402 | (*regs)[TARGET_EF_CP0_EPC] = tswapreg(env->active_tc.PC); | |
1403 | (*regs)[TARGET_EF_CP0_BADVADDR] = tswapreg(env->CP0_BadVAddr); | |
1404 | (*regs)[TARGET_EF_CP0_STATUS] = tswapreg(env->CP0_Status); | |
1405 | (*regs)[TARGET_EF_CP0_CAUSE] = tswapreg(env->CP0_Cause); | |
51e52606 NF |
1406 | } |
1407 | ||
1408 | #define USE_ELF_CORE_DUMP | |
388bb21a TS |
1409 | #define ELF_EXEC_PAGESIZE 4096 |
1410 | ||
46a1ee4f JC |
1411 | /* See arch/mips/include/uapi/asm/hwcap.h. */ |
1412 | enum { | |
1413 | HWCAP_MIPS_R6 = (1 << 0), | |
1414 | HWCAP_MIPS_MSA = (1 << 1), | |
9ea313ba PMD |
1415 | HWCAP_MIPS_CRC32 = (1 << 2), |
1416 | HWCAP_MIPS_MIPS16 = (1 << 3), | |
1417 | HWCAP_MIPS_MDMX = (1 << 4), | |
1418 | HWCAP_MIPS_MIPS3D = (1 << 5), | |
1419 | HWCAP_MIPS_SMARTMIPS = (1 << 6), | |
1420 | HWCAP_MIPS_DSP = (1 << 7), | |
1421 | HWCAP_MIPS_DSP2 = (1 << 8), | |
1422 | HWCAP_MIPS_DSP3 = (1 << 9), | |
1423 | HWCAP_MIPS_MIPS16E2 = (1 << 10), | |
1424 | HWCAP_LOONGSON_MMI = (1 << 11), | |
1425 | HWCAP_LOONGSON_EXT = (1 << 12), | |
1426 | HWCAP_LOONGSON_EXT2 = (1 << 13), | |
1427 | HWCAP_LOONGSON_CPUCFG = (1 << 14), | |
46a1ee4f JC |
1428 | }; |
1429 | ||
1430 | #define ELF_HWCAP get_elf_hwcap() | |
1431 | ||
7d9a3d96 | 1432 | #define GET_FEATURE_INSN(_flag, _hwcap) \ |
6dd97bfc PMD |
1433 | do { if (cpu->env.insn_flags & (_flag)) { hwcaps |= _hwcap; } } while (0) |
1434 | ||
388765a0 PMD |
1435 | #define GET_FEATURE_REG_SET(_reg, _mask, _hwcap) \ |
1436 | do { if (cpu->env._reg & (_mask)) { hwcaps |= _hwcap; } } while (0) | |
1437 | ||
ce543844 PMD |
1438 | #define GET_FEATURE_REG_EQU(_reg, _start, _length, _val, _hwcap) \ |
1439 | do { \ | |
1440 | if (extract32(cpu->env._reg, (_start), (_length)) == (_val)) { \ | |
1441 | hwcaps |= _hwcap; \ | |
1442 | } \ | |
1443 | } while (0) | |
1444 | ||
46a1ee4f JC |
1445 | static uint32_t get_elf_hwcap(void) |
1446 | { | |
1447 | MIPSCPU *cpu = MIPS_CPU(thread_cpu); | |
1448 | uint32_t hwcaps = 0; | |
1449 | ||
ce543844 PMD |
1450 | GET_FEATURE_REG_EQU(CP0_Config0, CP0C0_AR, CP0C0_AR_LENGTH, |
1451 | 2, HWCAP_MIPS_R6); | |
388765a0 | 1452 | GET_FEATURE_REG_SET(CP0_Config3, 1 << CP0C3_MSAP, HWCAP_MIPS_MSA); |
53673d0f PMD |
1453 | GET_FEATURE_INSN(ASE_LMMI, HWCAP_LOONGSON_MMI); |
1454 | GET_FEATURE_INSN(ASE_LEXT, HWCAP_LOONGSON_EXT); | |
46a1ee4f | 1455 | |
46a1ee4f JC |
1456 | return hwcaps; |
1457 | } | |
1458 | ||
ce543844 | 1459 | #undef GET_FEATURE_REG_EQU |
388765a0 | 1460 | #undef GET_FEATURE_REG_SET |
7d9a3d96 | 1461 | #undef GET_FEATURE_INSN |
6dd97bfc | 1462 | |
048f6b4d FB |
1463 | #endif /* TARGET_MIPS */ |
1464 | ||
b779e29e EI |
1465 | #ifdef TARGET_MICROBLAZE |
1466 | ||
0d5d4699 | 1467 | #define elf_check_arch(x) ( (x) == EM_MICROBLAZE || (x) == EM_MICROBLAZE_OLD) |
b779e29e EI |
1468 | |
1469 | #define ELF_CLASS ELFCLASS32 | |
0d5d4699 | 1470 | #define ELF_ARCH EM_MICROBLAZE |
b779e29e | 1471 | |
d97ef72e RH |
1472 | static inline void init_thread(struct target_pt_regs *regs, |
1473 | struct image_info *infop) | |
b779e29e EI |
1474 | { |
1475 | regs->pc = infop->entry; | |
1476 | regs->r1 = infop->start_stack; | |
1477 | ||
1478 | } | |
1479 | ||
b779e29e EI |
1480 | #define ELF_EXEC_PAGESIZE 4096 |
1481 | ||
e4cbd44d EI |
1482 | #define USE_ELF_CORE_DUMP |
1483 | #define ELF_NREG 38 | |
1484 | typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG]; | |
1485 | ||
1486 | /* See linux kernel: arch/mips/kernel/process.c:elf_dump_regs. */ | |
05390248 | 1487 | static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUMBState *env) |
e4cbd44d EI |
1488 | { |
1489 | int i, pos = 0; | |
1490 | ||
1491 | for (i = 0; i < 32; i++) { | |
86cd7b2d | 1492 | (*regs)[pos++] = tswapreg(env->regs[i]); |
e4cbd44d EI |
1493 | } |
1494 | ||
af20a93a | 1495 | (*regs)[pos++] = tswapreg(env->pc); |
1074c0fb | 1496 | (*regs)[pos++] = tswapreg(mb_cpu_read_msr(env)); |
af20a93a RH |
1497 | (*regs)[pos++] = 0; |
1498 | (*regs)[pos++] = tswapreg(env->ear); | |
1499 | (*regs)[pos++] = 0; | |
1500 | (*regs)[pos++] = tswapreg(env->esr); | |
e4cbd44d EI |
1501 | } |
1502 | ||
b779e29e EI |
1503 | #endif /* TARGET_MICROBLAZE */ |
1504 | ||
a0a839b6 MV |
1505 | #ifdef TARGET_NIOS2 |
1506 | ||
a0a839b6 MV |
1507 | #define elf_check_arch(x) ((x) == EM_ALTERA_NIOS2) |
1508 | ||
1509 | #define ELF_CLASS ELFCLASS32 | |
1510 | #define ELF_ARCH EM_ALTERA_NIOS2 | |
1511 | ||
1512 | static void init_thread(struct target_pt_regs *regs, struct image_info *infop) | |
1513 | { | |
1514 | regs->ea = infop->entry; | |
1515 | regs->sp = infop->start_stack; | |
a0a839b6 MV |
1516 | } |
1517 | ||
f5ef0e51 RH |
1518 | #define LO_COMMPAGE TARGET_PAGE_SIZE |
1519 | ||
1520 | static bool init_guest_commpage(void) | |
1521 | { | |
1522 | static const uint8_t kuser_page[4 + 2 * 64] = { | |
1523 | /* __kuser_helper_version */ | |
1524 | [0x00] = 0x02, 0x00, 0x00, 0x00, | |
1525 | ||
1526 | /* __kuser_cmpxchg */ | |
1527 | [0x04] = 0x3a, 0x6c, 0x3b, 0x00, /* trap 16 */ | |
1528 | 0x3a, 0x28, 0x00, 0xf8, /* ret */ | |
1529 | ||
1530 | /* __kuser_sigtramp */ | |
1531 | [0x44] = 0xc4, 0x22, 0x80, 0x00, /* movi r2, __NR_rt_sigreturn */ | |
1532 | 0x3a, 0x68, 0x3b, 0x00, /* trap 0 */ | |
1533 | }; | |
1534 | ||
1535 | void *want = g2h_untagged(LO_COMMPAGE & -qemu_host_page_size); | |
1536 | void *addr = mmap(want, qemu_host_page_size, PROT_READ | PROT_WRITE, | |
1537 | MAP_ANONYMOUS | MAP_PRIVATE | MAP_FIXED, -1, 0); | |
1538 | ||
1539 | if (addr == MAP_FAILED) { | |
1540 | perror("Allocating guest commpage"); | |
1541 | exit(EXIT_FAILURE); | |
1542 | } | |
1543 | if (addr != want) { | |
1544 | return false; | |
1545 | } | |
1546 | ||
1547 | memcpy(addr, kuser_page, sizeof(kuser_page)); | |
1548 | ||
1549 | if (mprotect(addr, qemu_host_page_size, PROT_READ)) { | |
1550 | perror("Protecting guest commpage"); | |
1551 | exit(EXIT_FAILURE); | |
1552 | } | |
1553 | ||
49840a4a | 1554 | page_set_flags(LO_COMMPAGE, LO_COMMPAGE | ~TARGET_PAGE_MASK, |
f5ef0e51 RH |
1555 | PAGE_READ | PAGE_EXEC | PAGE_VALID); |
1556 | return true; | |
1557 | } | |
1558 | ||
a0a839b6 MV |
1559 | #define ELF_EXEC_PAGESIZE 4096 |
1560 | ||
1561 | #define USE_ELF_CORE_DUMP | |
1562 | #define ELF_NREG 49 | |
1563 | typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG]; | |
1564 | ||
1565 | /* See linux kernel: arch/mips/kernel/process.c:elf_dump_regs. */ | |
1566 | static void elf_core_copy_regs(target_elf_gregset_t *regs, | |
1567 | const CPUNios2State *env) | |
1568 | { | |
1569 | int i; | |
1570 | ||
1571 | (*regs)[0] = -1; | |
1572 | for (i = 1; i < 8; i++) /* r0-r7 */ | |
1573 | (*regs)[i] = tswapreg(env->regs[i + 7]); | |
1574 | ||
1575 | for (i = 8; i < 16; i++) /* r8-r15 */ | |
1576 | (*regs)[i] = tswapreg(env->regs[i - 8]); | |
1577 | ||
1578 | for (i = 16; i < 24; i++) /* r16-r23 */ | |
1579 | (*regs)[i] = tswapreg(env->regs[i + 7]); | |
1580 | (*regs)[24] = -1; /* R_ET */ | |
1581 | (*regs)[25] = -1; /* R_BT */ | |
1582 | (*regs)[26] = tswapreg(env->regs[R_GP]); | |
1583 | (*regs)[27] = tswapreg(env->regs[R_SP]); | |
1584 | (*regs)[28] = tswapreg(env->regs[R_FP]); | |
1585 | (*regs)[29] = tswapreg(env->regs[R_EA]); | |
1586 | (*regs)[30] = -1; /* R_SSTATUS */ | |
1587 | (*regs)[31] = tswapreg(env->regs[R_RA]); | |
1588 | ||
17a406ee | 1589 | (*regs)[32] = tswapreg(env->pc); |
a0a839b6 MV |
1590 | |
1591 | (*regs)[33] = -1; /* R_STATUS */ | |
1592 | (*regs)[34] = tswapreg(env->regs[CR_ESTATUS]); | |
1593 | ||
1594 | for (i = 35; i < 49; i++) /* ... */ | |
1595 | (*regs)[i] = -1; | |
1596 | } | |
1597 | ||
1598 | #endif /* TARGET_NIOS2 */ | |
1599 | ||
d962783e JL |
1600 | #ifdef TARGET_OPENRISC |
1601 | ||
d962783e JL |
1602 | #define ELF_ARCH EM_OPENRISC |
1603 | #define ELF_CLASS ELFCLASS32 | |
1604 | #define ELF_DATA ELFDATA2MSB | |
1605 | ||
1606 | static inline void init_thread(struct target_pt_regs *regs, | |
1607 | struct image_info *infop) | |
1608 | { | |
1609 | regs->pc = infop->entry; | |
1610 | regs->gpr[1] = infop->start_stack; | |
1611 | } | |
1612 | ||
1613 | #define USE_ELF_CORE_DUMP | |
1614 | #define ELF_EXEC_PAGESIZE 8192 | |
1615 | ||
1616 | /* See linux kernel arch/openrisc/include/asm/elf.h. */ | |
1617 | #define ELF_NREG 34 /* gprs and pc, sr */ | |
1618 | typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG]; | |
1619 | ||
1620 | static void elf_core_copy_regs(target_elf_gregset_t *regs, | |
1621 | const CPUOpenRISCState *env) | |
1622 | { | |
1623 | int i; | |
1624 | ||
1625 | for (i = 0; i < 32; i++) { | |
d89e71e8 | 1626 | (*regs)[i] = tswapreg(cpu_get_gpr(env, i)); |
d962783e | 1627 | } |
86cd7b2d | 1628 | (*regs)[32] = tswapreg(env->pc); |
84775c43 | 1629 | (*regs)[33] = tswapreg(cpu_get_sr(env)); |
d962783e JL |
1630 | } |
1631 | #define ELF_HWCAP 0 | |
1632 | #define ELF_PLATFORM NULL | |
1633 | ||
1634 | #endif /* TARGET_OPENRISC */ | |
1635 | ||
fdf9b3e8 FB |
1636 | #ifdef TARGET_SH4 |
1637 | ||
fdf9b3e8 | 1638 | #define ELF_CLASS ELFCLASS32 |
fdf9b3e8 FB |
1639 | #define ELF_ARCH EM_SH |
1640 | ||
d97ef72e RH |
1641 | static inline void init_thread(struct target_pt_regs *regs, |
1642 | struct image_info *infop) | |
fdf9b3e8 | 1643 | { |
d97ef72e RH |
1644 | /* Check other registers XXXXX */ |
1645 | regs->pc = infop->entry; | |
1646 | regs->regs[15] = infop->start_stack; | |
fdf9b3e8 FB |
1647 | } |
1648 | ||
7631c97e NF |
1649 | /* See linux kernel: arch/sh/include/asm/elf.h. */ |
1650 | #define ELF_NREG 23 | |
1651 | typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG]; | |
1652 | ||
1653 | /* See linux kernel: arch/sh/include/asm/ptrace.h. */ | |
1654 | enum { | |
1655 | TARGET_REG_PC = 16, | |
1656 | TARGET_REG_PR = 17, | |
1657 | TARGET_REG_SR = 18, | |
1658 | TARGET_REG_GBR = 19, | |
1659 | TARGET_REG_MACH = 20, | |
1660 | TARGET_REG_MACL = 21, | |
1661 | TARGET_REG_SYSCALL = 22 | |
1662 | }; | |
1663 | ||
d97ef72e | 1664 | static inline void elf_core_copy_regs(target_elf_gregset_t *regs, |
05390248 | 1665 | const CPUSH4State *env) |
7631c97e NF |
1666 | { |
1667 | int i; | |
1668 | ||
1669 | for (i = 0; i < 16; i++) { | |
72cd500b | 1670 | (*regs)[i] = tswapreg(env->gregs[i]); |
7631c97e NF |
1671 | } |
1672 | ||
86cd7b2d PB |
1673 | (*regs)[TARGET_REG_PC] = tswapreg(env->pc); |
1674 | (*regs)[TARGET_REG_PR] = tswapreg(env->pr); | |
1675 | (*regs)[TARGET_REG_SR] = tswapreg(env->sr); | |
1676 | (*regs)[TARGET_REG_GBR] = tswapreg(env->gbr); | |
1677 | (*regs)[TARGET_REG_MACH] = tswapreg(env->mach); | |
1678 | (*regs)[TARGET_REG_MACL] = tswapreg(env->macl); | |
7631c97e NF |
1679 | (*regs)[TARGET_REG_SYSCALL] = 0; /* FIXME */ |
1680 | } | |
1681 | ||
1682 | #define USE_ELF_CORE_DUMP | |
fdf9b3e8 FB |
1683 | #define ELF_EXEC_PAGESIZE 4096 |
1684 | ||
e42fd944 RH |
1685 | enum { |
1686 | SH_CPU_HAS_FPU = 0x0001, /* Hardware FPU support */ | |
1687 | SH_CPU_HAS_P2_FLUSH_BUG = 0x0002, /* Need to flush the cache in P2 area */ | |
1688 | SH_CPU_HAS_MMU_PAGE_ASSOC = 0x0004, /* SH3: TLB way selection bit support */ | |
1689 | SH_CPU_HAS_DSP = 0x0008, /* SH-DSP: DSP support */ | |
1690 | SH_CPU_HAS_PERF_COUNTER = 0x0010, /* Hardware performance counters */ | |
1691 | SH_CPU_HAS_PTEA = 0x0020, /* PTEA register */ | |
1692 | SH_CPU_HAS_LLSC = 0x0040, /* movli.l/movco.l */ | |
1693 | SH_CPU_HAS_L2_CACHE = 0x0080, /* Secondary cache / URAM */ | |
1694 | SH_CPU_HAS_OP32 = 0x0100, /* 32-bit instruction support */ | |
1695 | SH_CPU_HAS_PTEAEX = 0x0200, /* PTE ASID Extension support */ | |
1696 | }; | |
1697 | ||
1698 | #define ELF_HWCAP get_elf_hwcap() | |
1699 | ||
1700 | static uint32_t get_elf_hwcap(void) | |
1701 | { | |
1702 | SuperHCPU *cpu = SUPERH_CPU(thread_cpu); | |
1703 | uint32_t hwcap = 0; | |
1704 | ||
1705 | hwcap |= SH_CPU_HAS_FPU; | |
1706 | ||
1707 | if (cpu->env.features & SH_FEATURE_SH4A) { | |
1708 | hwcap |= SH_CPU_HAS_LLSC; | |
1709 | } | |
1710 | ||
1711 | return hwcap; | |
1712 | } | |
1713 | ||
fdf9b3e8 FB |
1714 | #endif |
1715 | ||
48733d19 TS |
1716 | #ifdef TARGET_CRIS |
1717 | ||
48733d19 | 1718 | #define ELF_CLASS ELFCLASS32 |
48733d19 TS |
1719 | #define ELF_ARCH EM_CRIS |
1720 | ||
d97ef72e RH |
1721 | static inline void init_thread(struct target_pt_regs *regs, |
1722 | struct image_info *infop) | |
48733d19 | 1723 | { |
d97ef72e | 1724 | regs->erp = infop->entry; |
48733d19 TS |
1725 | } |
1726 | ||
48733d19 TS |
1727 | #define ELF_EXEC_PAGESIZE 8192 |
1728 | ||
1729 | #endif | |
1730 | ||
e6e5906b PB |
1731 | #ifdef TARGET_M68K |
1732 | ||
d97ef72e | 1733 | #define ELF_CLASS ELFCLASS32 |
d97ef72e | 1734 | #define ELF_ARCH EM_68K |
e6e5906b PB |
1735 | |
1736 | /* ??? Does this need to do anything? | |
d97ef72e | 1737 | #define ELF_PLAT_INIT(_r) */ |
e6e5906b | 1738 | |
d97ef72e RH |
1739 | static inline void init_thread(struct target_pt_regs *regs, |
1740 | struct image_info *infop) | |
e6e5906b PB |
1741 | { |
1742 | regs->usp = infop->start_stack; | |
1743 | regs->sr = 0; | |
1744 | regs->pc = infop->entry; | |
1745 | } | |
1746 | ||
7a93cc55 NF |
1747 | /* See linux kernel: arch/m68k/include/asm/elf.h. */ |
1748 | #define ELF_NREG 20 | |
1749 | typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG]; | |
1750 | ||
05390248 | 1751 | static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUM68KState *env) |
7a93cc55 | 1752 | { |
86cd7b2d PB |
1753 | (*regs)[0] = tswapreg(env->dregs[1]); |
1754 | (*regs)[1] = tswapreg(env->dregs[2]); | |
1755 | (*regs)[2] = tswapreg(env->dregs[3]); | |
1756 | (*regs)[3] = tswapreg(env->dregs[4]); | |
1757 | (*regs)[4] = tswapreg(env->dregs[5]); | |
1758 | (*regs)[5] = tswapreg(env->dregs[6]); | |
1759 | (*regs)[6] = tswapreg(env->dregs[7]); | |
1760 | (*regs)[7] = tswapreg(env->aregs[0]); | |
1761 | (*regs)[8] = tswapreg(env->aregs[1]); | |
1762 | (*regs)[9] = tswapreg(env->aregs[2]); | |
1763 | (*regs)[10] = tswapreg(env->aregs[3]); | |
1764 | (*regs)[11] = tswapreg(env->aregs[4]); | |
1765 | (*regs)[12] = tswapreg(env->aregs[5]); | |
1766 | (*regs)[13] = tswapreg(env->aregs[6]); | |
1767 | (*regs)[14] = tswapreg(env->dregs[0]); | |
1768 | (*regs)[15] = tswapreg(env->aregs[7]); | |
1769 | (*regs)[16] = tswapreg(env->dregs[0]); /* FIXME: orig_d0 */ | |
1770 | (*regs)[17] = tswapreg(env->sr); | |
1771 | (*regs)[18] = tswapreg(env->pc); | |
7a93cc55 NF |
1772 | (*regs)[19] = 0; /* FIXME: regs->format | regs->vector */ |
1773 | } | |
1774 | ||
1775 | #define USE_ELF_CORE_DUMP | |
d97ef72e | 1776 | #define ELF_EXEC_PAGESIZE 8192 |
e6e5906b PB |
1777 | |
1778 | #endif | |
1779 | ||
7a3148a9 JM |
1780 | #ifdef TARGET_ALPHA |
1781 | ||
7a3148a9 | 1782 | #define ELF_CLASS ELFCLASS64 |
7a3148a9 JM |
1783 | #define ELF_ARCH EM_ALPHA |
1784 | ||
d97ef72e RH |
1785 | static inline void init_thread(struct target_pt_regs *regs, |
1786 | struct image_info *infop) | |
7a3148a9 JM |
1787 | { |
1788 | regs->pc = infop->entry; | |
1789 | regs->ps = 8; | |
1790 | regs->usp = infop->start_stack; | |
7a3148a9 JM |
1791 | } |
1792 | ||
7a3148a9 JM |
1793 | #define ELF_EXEC_PAGESIZE 8192 |
1794 | ||
1795 | #endif /* TARGET_ALPHA */ | |
1796 | ||
a4c075f1 UH |
1797 | #ifdef TARGET_S390X |
1798 | ||
a4c075f1 UH |
1799 | #define ELF_CLASS ELFCLASS64 |
1800 | #define ELF_DATA ELFDATA2MSB | |
1801 | #define ELF_ARCH EM_S390 | |
1802 | ||
6d88baf1 DH |
1803 | #include "elf.h" |
1804 | ||
1805 | #define ELF_HWCAP get_elf_hwcap() | |
1806 | ||
1807 | #define GET_FEATURE(_feat, _hwcap) \ | |
1808 | do { if (s390_has_feat(_feat)) { hwcap |= _hwcap; } } while (0) | |
1809 | ||
e1b819c8 | 1810 | uint32_t get_elf_hwcap(void) |
6d88baf1 DH |
1811 | { |
1812 | /* | |
1813 | * Let's assume we always have esan3 and zarch. | |
1814 | * 31-bit processes can use 64-bit registers (high gprs). | |
1815 | */ | |
1816 | uint32_t hwcap = HWCAP_S390_ESAN3 | HWCAP_S390_ZARCH | HWCAP_S390_HIGH_GPRS; | |
1817 | ||
1818 | GET_FEATURE(S390_FEAT_STFLE, HWCAP_S390_STFLE); | |
1819 | GET_FEATURE(S390_FEAT_MSA, HWCAP_S390_MSA); | |
1820 | GET_FEATURE(S390_FEAT_LONG_DISPLACEMENT, HWCAP_S390_LDISP); | |
1821 | GET_FEATURE(S390_FEAT_EXTENDED_IMMEDIATE, HWCAP_S390_EIMM); | |
1822 | if (s390_has_feat(S390_FEAT_EXTENDED_TRANSLATION_3) && | |
1823 | s390_has_feat(S390_FEAT_ETF3_ENH)) { | |
1824 | hwcap |= HWCAP_S390_ETF3EH; | |
1825 | } | |
1826 | GET_FEATURE(S390_FEAT_VECTOR, HWCAP_S390_VXRS); | |
da215c23 | 1827 | GET_FEATURE(S390_FEAT_VECTOR_ENH, HWCAP_S390_VXRS_EXT); |
ffc8453b | 1828 | GET_FEATURE(S390_FEAT_VECTOR_ENH2, HWCAP_S390_VXRS_EXT2); |
6d88baf1 DH |
1829 | |
1830 | return hwcap; | |
1831 | } | |
1832 | ||
e19807be IL |
1833 | const char *elf_hwcap_str(uint32_t bit) |
1834 | { | |
1835 | static const char *hwcap_str[] = { | |
7f114a58 IL |
1836 | [HWCAP_S390_NR_ESAN3] = "esan3", |
1837 | [HWCAP_S390_NR_ZARCH] = "zarch", | |
1838 | [HWCAP_S390_NR_STFLE] = "stfle", | |
1839 | [HWCAP_S390_NR_MSA] = "msa", | |
1840 | [HWCAP_S390_NR_LDISP] = "ldisp", | |
1841 | [HWCAP_S390_NR_EIMM] = "eimm", | |
1842 | [HWCAP_S390_NR_DFP] = "dfp", | |
1843 | [HWCAP_S390_NR_HPAGE] = "edat", | |
1844 | [HWCAP_S390_NR_ETF3EH] = "etf3eh", | |
1845 | [HWCAP_S390_NR_HIGH_GPRS] = "highgprs", | |
1846 | [HWCAP_S390_NR_TE] = "te", | |
1847 | [HWCAP_S390_NR_VXRS] = "vx", | |
1848 | [HWCAP_S390_NR_VXRS_BCD] = "vxd", | |
1849 | [HWCAP_S390_NR_VXRS_EXT] = "vxe", | |
1850 | [HWCAP_S390_NR_GS] = "gs", | |
1851 | [HWCAP_S390_NR_VXRS_EXT2] = "vxe2", | |
1852 | [HWCAP_S390_NR_VXRS_PDE] = "vxp", | |
1853 | [HWCAP_S390_NR_SORT] = "sort", | |
1854 | [HWCAP_S390_NR_DFLT] = "dflt", | |
1855 | [HWCAP_S390_NR_NNPA] = "nnpa", | |
1856 | [HWCAP_S390_NR_PCI_MIO] = "pcimio", | |
1857 | [HWCAP_S390_NR_SIE] = "sie", | |
e19807be IL |
1858 | }; |
1859 | ||
1860 | return bit < ARRAY_SIZE(hwcap_str) ? hwcap_str[bit] : NULL; | |
1861 | } | |
1862 | ||
a4c075f1 UH |
1863 | static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop) |
1864 | { | |
1865 | regs->psw.addr = infop->entry; | |
78a1e153 IL |
1866 | regs->psw.mask = PSW_MASK_DAT | PSW_MASK_IO | PSW_MASK_EXT | \ |
1867 | PSW_MASK_MCHECK | PSW_MASK_PSTATE | PSW_MASK_64 | \ | |
1868 | PSW_MASK_32; | |
a4c075f1 UH |
1869 | regs->gprs[15] = infop->start_stack; |
1870 | } | |
1871 | ||
4a1e8931 IL |
1872 | /* See linux kernel: arch/s390/include/uapi/asm/ptrace.h (s390_regs). */ |
1873 | #define ELF_NREG 27 | |
1874 | typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG]; | |
1875 | ||
1876 | enum { | |
1877 | TARGET_REG_PSWM = 0, | |
1878 | TARGET_REG_PSWA = 1, | |
1879 | TARGET_REG_GPRS = 2, | |
1880 | TARGET_REG_ARS = 18, | |
1881 | TARGET_REG_ORIG_R2 = 26, | |
1882 | }; | |
1883 | ||
1884 | static void elf_core_copy_regs(target_elf_gregset_t *regs, | |
1885 | const CPUS390XState *env) | |
1886 | { | |
1887 | int i; | |
1888 | uint32_t *aregs; | |
1889 | ||
1890 | (*regs)[TARGET_REG_PSWM] = tswapreg(env->psw.mask); | |
1891 | (*regs)[TARGET_REG_PSWA] = tswapreg(env->psw.addr); | |
1892 | for (i = 0; i < 16; i++) { | |
1893 | (*regs)[TARGET_REG_GPRS + i] = tswapreg(env->regs[i]); | |
1894 | } | |
1895 | aregs = (uint32_t *)&((*regs)[TARGET_REG_ARS]); | |
1896 | for (i = 0; i < 16; i++) { | |
1897 | aregs[i] = tswap32(env->aregs[i]); | |
1898 | } | |
1899 | (*regs)[TARGET_REG_ORIG_R2] = 0; | |
1900 | } | |
1901 | ||
1902 | #define USE_ELF_CORE_DUMP | |
1903 | #define ELF_EXEC_PAGESIZE 4096 | |
1904 | ||
b63c6b97 RH |
1905 | #define VDSO_HEADER "vdso.c.inc" |
1906 | ||
a4c075f1 UH |
1907 | #endif /* TARGET_S390X */ |
1908 | ||
47ae93cd MC |
1909 | #ifdef TARGET_RISCV |
1910 | ||
47ae93cd MC |
1911 | #define ELF_ARCH EM_RISCV |
1912 | ||
1913 | #ifdef TARGET_RISCV32 | |
1914 | #define ELF_CLASS ELFCLASS32 | |
468c1bb5 | 1915 | #define VDSO_HEADER "vdso-32.c.inc" |
47ae93cd MC |
1916 | #else |
1917 | #define ELF_CLASS ELFCLASS64 | |
468c1bb5 | 1918 | #define VDSO_HEADER "vdso-64.c.inc" |
47ae93cd MC |
1919 | #endif |
1920 | ||
cb46938c KC |
1921 | #define ELF_HWCAP get_elf_hwcap() |
1922 | ||
1923 | static uint32_t get_elf_hwcap(void) | |
1924 | { | |
1925 | #define MISA_BIT(EXT) (1 << (EXT - 'A')) | |
1926 | RISCVCPU *cpu = RISCV_CPU(thread_cpu); | |
1927 | uint32_t mask = MISA_BIT('I') | MISA_BIT('M') | MISA_BIT('A') | |
4333f092 NE |
1928 | | MISA_BIT('F') | MISA_BIT('D') | MISA_BIT('C') |
1929 | | MISA_BIT('V'); | |
cb46938c | 1930 | |
e91a7227 | 1931 | return cpu->env.misa_ext & mask; |
cb46938c KC |
1932 | #undef MISA_BIT |
1933 | } | |
1934 | ||
47ae93cd MC |
1935 | static inline void init_thread(struct target_pt_regs *regs, |
1936 | struct image_info *infop) | |
1937 | { | |
1938 | regs->sepc = infop->entry; | |
1939 | regs->sp = infop->start_stack; | |
1940 | } | |
1941 | ||
1942 | #define ELF_EXEC_PAGESIZE 4096 | |
1943 | ||
1944 | #endif /* TARGET_RISCV */ | |
1945 | ||
7c248bcd RH |
1946 | #ifdef TARGET_HPPA |
1947 | ||
7c248bcd RH |
1948 | #define ELF_CLASS ELFCLASS32 |
1949 | #define ELF_ARCH EM_PARISC | |
1950 | #define ELF_PLATFORM "PARISC" | |
1951 | #define STACK_GROWS_DOWN 0 | |
1952 | #define STACK_ALIGNMENT 64 | |
1953 | ||
c7bc2a8f RH |
1954 | #define VDSO_HEADER "vdso.c.inc" |
1955 | ||
7c248bcd RH |
1956 | static inline void init_thread(struct target_pt_regs *regs, |
1957 | struct image_info *infop) | |
1958 | { | |
1959 | regs->iaoq[0] = infop->entry; | |
1960 | regs->iaoq[1] = infop->entry + 4; | |
1961 | regs->gr[23] = 0; | |
60f1c801 RH |
1962 | regs->gr[24] = infop->argv; |
1963 | regs->gr[25] = infop->argc; | |
7c248bcd RH |
1964 | /* The top-of-stack contains a linkage buffer. */ |
1965 | regs->gr[30] = infop->start_stack + 64; | |
1966 | regs->gr[31] = infop->entry; | |
1967 | } | |
1968 | ||
eee816c0 RH |
1969 | #define LO_COMMPAGE 0 |
1970 | ||
1971 | static bool init_guest_commpage(void) | |
1972 | { | |
1973 | void *want = g2h_untagged(LO_COMMPAGE); | |
1974 | void *addr = mmap(want, qemu_host_page_size, PROT_NONE, | |
1975 | MAP_ANONYMOUS | MAP_PRIVATE | MAP_FIXED, -1, 0); | |
1976 | ||
1977 | if (addr == MAP_FAILED) { | |
1978 | perror("Allocating guest commpage"); | |
1979 | exit(EXIT_FAILURE); | |
1980 | } | |
1981 | if (addr != want) { | |
1982 | return false; | |
1983 | } | |
1984 | ||
1985 | /* | |
1986 | * On Linux, page zero is normally marked execute only + gateway. | |
1987 | * Normal read or write is supposed to fail (thus PROT_NONE above), | |
1988 | * but specific offsets have kernel code mapped to raise permissions | |
1989 | * and implement syscalls. Here, simply mark the page executable. | |
1990 | * Special case the entry points during translation (see do_page_zero). | |
1991 | */ | |
49840a4a | 1992 | page_set_flags(LO_COMMPAGE, LO_COMMPAGE | ~TARGET_PAGE_MASK, |
eee816c0 RH |
1993 | PAGE_EXEC | PAGE_VALID); |
1994 | return true; | |
1995 | } | |
1996 | ||
7c248bcd RH |
1997 | #endif /* TARGET_HPPA */ |
1998 | ||
ba7651fb MF |
1999 | #ifdef TARGET_XTENSA |
2000 | ||
ba7651fb MF |
2001 | #define ELF_CLASS ELFCLASS32 |
2002 | #define ELF_ARCH EM_XTENSA | |
2003 | ||
2004 | static inline void init_thread(struct target_pt_regs *regs, | |
2005 | struct image_info *infop) | |
2006 | { | |
2007 | regs->windowbase = 0; | |
2008 | regs->windowstart = 1; | |
2009 | regs->areg[1] = infop->start_stack; | |
2010 | regs->pc = infop->entry; | |
d2796be6 MF |
2011 | if (info_is_fdpic(infop)) { |
2012 | regs->areg[4] = infop->loadmap_addr; | |
2013 | regs->areg[5] = infop->interpreter_loadmap_addr; | |
2014 | if (infop->interpreter_loadmap_addr) { | |
2015 | regs->areg[6] = infop->interpreter_pt_dynamic_addr; | |
2016 | } else { | |
2017 | regs->areg[6] = infop->pt_dynamic_addr; | |
2018 | } | |
2019 | } | |
ba7651fb MF |
2020 | } |
2021 | ||
2022 | /* See linux kernel: arch/xtensa/include/asm/elf.h. */ | |
2023 | #define ELF_NREG 128 | |
2024 | typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG]; | |
2025 | ||
2026 | enum { | |
2027 | TARGET_REG_PC, | |
2028 | TARGET_REG_PS, | |
2029 | TARGET_REG_LBEG, | |
2030 | TARGET_REG_LEND, | |
2031 | TARGET_REG_LCOUNT, | |
2032 | TARGET_REG_SAR, | |
2033 | TARGET_REG_WINDOWSTART, | |
2034 | TARGET_REG_WINDOWBASE, | |
2035 | TARGET_REG_THREADPTR, | |
2036 | TARGET_REG_AR0 = 64, | |
2037 | }; | |
2038 | ||
2039 | static void elf_core_copy_regs(target_elf_gregset_t *regs, | |
2040 | const CPUXtensaState *env) | |
2041 | { | |
2042 | unsigned i; | |
2043 | ||
2044 | (*regs)[TARGET_REG_PC] = tswapreg(env->pc); | |
2045 | (*regs)[TARGET_REG_PS] = tswapreg(env->sregs[PS] & ~PS_EXCM); | |
2046 | (*regs)[TARGET_REG_LBEG] = tswapreg(env->sregs[LBEG]); | |
2047 | (*regs)[TARGET_REG_LEND] = tswapreg(env->sregs[LEND]); | |
2048 | (*regs)[TARGET_REG_LCOUNT] = tswapreg(env->sregs[LCOUNT]); | |
2049 | (*regs)[TARGET_REG_SAR] = tswapreg(env->sregs[SAR]); | |
2050 | (*regs)[TARGET_REG_WINDOWSTART] = tswapreg(env->sregs[WINDOW_START]); | |
2051 | (*regs)[TARGET_REG_WINDOWBASE] = tswapreg(env->sregs[WINDOW_BASE]); | |
2052 | (*regs)[TARGET_REG_THREADPTR] = tswapreg(env->uregs[THREADPTR]); | |
2053 | xtensa_sync_phys_from_window((CPUXtensaState *)env); | |
2054 | for (i = 0; i < env->config->nareg; ++i) { | |
2055 | (*regs)[TARGET_REG_AR0 + i] = tswapreg(env->phys_regs[i]); | |
2056 | } | |
2057 | } | |
2058 | ||
2059 | #define USE_ELF_CORE_DUMP | |
2060 | #define ELF_EXEC_PAGESIZE 4096 | |
2061 | ||
2062 | #endif /* TARGET_XTENSA */ | |
2063 | ||
d2a56bd2 TS |
2064 | #ifdef TARGET_HEXAGON |
2065 | ||
d2a56bd2 TS |
2066 | #define ELF_CLASS ELFCLASS32 |
2067 | #define ELF_ARCH EM_HEXAGON | |
2068 | ||
2069 | static inline void init_thread(struct target_pt_regs *regs, | |
2070 | struct image_info *infop) | |
2071 | { | |
2072 | regs->sepc = infop->entry; | |
2073 | regs->sp = infop->start_stack; | |
2074 | } | |
2075 | ||
2076 | #endif /* TARGET_HEXAGON */ | |
2077 | ||
fcdc0ab4 JY |
2078 | #ifndef ELF_BASE_PLATFORM |
2079 | #define ELF_BASE_PLATFORM (NULL) | |
2080 | #endif | |
2081 | ||
15338fd7 FB |
2082 | #ifndef ELF_PLATFORM |
2083 | #define ELF_PLATFORM (NULL) | |
2084 | #endif | |
2085 | ||
75be901c PC |
2086 | #ifndef ELF_MACHINE |
2087 | #define ELF_MACHINE ELF_ARCH | |
2088 | #endif | |
2089 | ||
d276a604 PC |
2090 | #ifndef elf_check_arch |
2091 | #define elf_check_arch(x) ((x) == ELF_ARCH) | |
2092 | #endif | |
2093 | ||
ace3d654 CMAB |
2094 | #ifndef elf_check_abi |
2095 | #define elf_check_abi(x) (1) | |
2096 | #endif | |
2097 | ||
15338fd7 FB |
2098 | #ifndef ELF_HWCAP |
2099 | #define ELF_HWCAP 0 | |
2100 | #endif | |
2101 | ||
7c4ee5bc RH |
2102 | #ifndef STACK_GROWS_DOWN |
2103 | #define STACK_GROWS_DOWN 1 | |
2104 | #endif | |
2105 | ||
2106 | #ifndef STACK_ALIGNMENT | |
2107 | #define STACK_ALIGNMENT 16 | |
2108 | #endif | |
2109 | ||
992f48a0 | 2110 | #ifdef TARGET_ABI32 |
cb33da57 | 2111 | #undef ELF_CLASS |
992f48a0 | 2112 | #define ELF_CLASS ELFCLASS32 |
cb33da57 BS |
2113 | #undef bswaptls |
2114 | #define bswaptls(ptr) bswap32s(ptr) | |
2115 | #endif | |
2116 | ||
872f3d04 RH |
2117 | #ifndef EXSTACK_DEFAULT |
2118 | #define EXSTACK_DEFAULT false | |
2119 | #endif | |
2120 | ||
31e31b8a | 2121 | #include "elf.h" |
09bfb054 | 2122 | |
e8384b37 RH |
2123 | /* We must delay the following stanzas until after "elf.h". */ |
2124 | #if defined(TARGET_AARCH64) | |
2125 | ||
2126 | static bool arch_parse_elf_property(uint32_t pr_type, uint32_t pr_datasz, | |
2127 | const uint32_t *data, | |
2128 | struct image_info *info, | |
2129 | Error **errp) | |
2130 | { | |
2131 | if (pr_type == GNU_PROPERTY_AARCH64_FEATURE_1_AND) { | |
2132 | if (pr_datasz != sizeof(uint32_t)) { | |
2133 | error_setg(errp, "Ill-formed GNU_PROPERTY_AARCH64_FEATURE_1_AND"); | |
2134 | return false; | |
2135 | } | |
2136 | /* We will extract GNU_PROPERTY_AARCH64_FEATURE_1_BTI later. */ | |
2137 | info->note_flags = *data; | |
2138 | } | |
2139 | return true; | |
2140 | } | |
2141 | #define ARCH_USE_GNU_PROPERTY 1 | |
2142 | ||
2143 | #else | |
2144 | ||
83f990eb RH |
2145 | static bool arch_parse_elf_property(uint32_t pr_type, uint32_t pr_datasz, |
2146 | const uint32_t *data, | |
2147 | struct image_info *info, | |
2148 | Error **errp) | |
2149 | { | |
2150 | g_assert_not_reached(); | |
2151 | } | |
2152 | #define ARCH_USE_GNU_PROPERTY 0 | |
2153 | ||
e8384b37 RH |
2154 | #endif |
2155 | ||
09bfb054 FB |
2156 | struct exec |
2157 | { | |
d97ef72e RH |
2158 | unsigned int a_info; /* Use macros N_MAGIC, etc for access */ |
2159 | unsigned int a_text; /* length of text, in bytes */ | |
2160 | unsigned int a_data; /* length of data, in bytes */ | |
2161 | unsigned int a_bss; /* length of uninitialized data area, in bytes */ | |
2162 | unsigned int a_syms; /* length of symbol table data in file, in bytes */ | |
2163 | unsigned int a_entry; /* start address */ | |
2164 | unsigned int a_trsize; /* length of relocation info for text, in bytes */ | |
2165 | unsigned int a_drsize; /* length of relocation info for data, in bytes */ | |
09bfb054 FB |
2166 | }; |
2167 | ||
2168 | ||
2169 | #define N_MAGIC(exec) ((exec).a_info & 0xffff) | |
2170 | #define OMAGIC 0407 | |
2171 | #define NMAGIC 0410 | |
2172 | #define ZMAGIC 0413 | |
2173 | #define QMAGIC 0314 | |
2174 | ||
e0d1673d | 2175 | #define DLINFO_ITEMS 16 |
31e31b8a | 2176 | |
09bfb054 FB |
2177 | static inline void memcpy_fromfs(void * to, const void * from, unsigned long n) |
2178 | { | |
d97ef72e | 2179 | memcpy(to, from, n); |
09bfb054 | 2180 | } |
d691f669 | 2181 | |
31e31b8a | 2182 | #ifdef BSWAP_NEEDED |
92a31b1f | 2183 | static void bswap_ehdr(struct elfhdr *ehdr) |
31e31b8a | 2184 | { |
d97ef72e RH |
2185 | bswap16s(&ehdr->e_type); /* Object file type */ |
2186 | bswap16s(&ehdr->e_machine); /* Architecture */ | |
2187 | bswap32s(&ehdr->e_version); /* Object file version */ | |
2188 | bswaptls(&ehdr->e_entry); /* Entry point virtual address */ | |
2189 | bswaptls(&ehdr->e_phoff); /* Program header table file offset */ | |
2190 | bswaptls(&ehdr->e_shoff); /* Section header table file offset */ | |
2191 | bswap32s(&ehdr->e_flags); /* Processor-specific flags */ | |
2192 | bswap16s(&ehdr->e_ehsize); /* ELF header size in bytes */ | |
2193 | bswap16s(&ehdr->e_phentsize); /* Program header table entry size */ | |
2194 | bswap16s(&ehdr->e_phnum); /* Program header table entry count */ | |
2195 | bswap16s(&ehdr->e_shentsize); /* Section header table entry size */ | |
2196 | bswap16s(&ehdr->e_shnum); /* Section header table entry count */ | |
2197 | bswap16s(&ehdr->e_shstrndx); /* Section header string table index */ | |
31e31b8a FB |
2198 | } |
2199 | ||
991f8f0c | 2200 | static void bswap_phdr(struct elf_phdr *phdr, int phnum) |
31e31b8a | 2201 | { |
991f8f0c RH |
2202 | int i; |
2203 | for (i = 0; i < phnum; ++i, ++phdr) { | |
2204 | bswap32s(&phdr->p_type); /* Segment type */ | |
2205 | bswap32s(&phdr->p_flags); /* Segment flags */ | |
2206 | bswaptls(&phdr->p_offset); /* Segment file offset */ | |
2207 | bswaptls(&phdr->p_vaddr); /* Segment virtual address */ | |
2208 | bswaptls(&phdr->p_paddr); /* Segment physical address */ | |
2209 | bswaptls(&phdr->p_filesz); /* Segment size in file */ | |
2210 | bswaptls(&phdr->p_memsz); /* Segment size in memory */ | |
2211 | bswaptls(&phdr->p_align); /* Segment alignment */ | |
2212 | } | |
31e31b8a | 2213 | } |
689f936f | 2214 | |
991f8f0c | 2215 | static void bswap_shdr(struct elf_shdr *shdr, int shnum) |
689f936f | 2216 | { |
991f8f0c RH |
2217 | int i; |
2218 | for (i = 0; i < shnum; ++i, ++shdr) { | |
2219 | bswap32s(&shdr->sh_name); | |
2220 | bswap32s(&shdr->sh_type); | |
2221 | bswaptls(&shdr->sh_flags); | |
2222 | bswaptls(&shdr->sh_addr); | |
2223 | bswaptls(&shdr->sh_offset); | |
2224 | bswaptls(&shdr->sh_size); | |
2225 | bswap32s(&shdr->sh_link); | |
2226 | bswap32s(&shdr->sh_info); | |
2227 | bswaptls(&shdr->sh_addralign); | |
2228 | bswaptls(&shdr->sh_entsize); | |
2229 | } | |
689f936f FB |
2230 | } |
2231 | ||
7a3148a9 | 2232 | static void bswap_sym(struct elf_sym *sym) |
689f936f FB |
2233 | { |
2234 | bswap32s(&sym->st_name); | |
7a3148a9 JM |
2235 | bswaptls(&sym->st_value); |
2236 | bswaptls(&sym->st_size); | |
689f936f FB |
2237 | bswap16s(&sym->st_shndx); |
2238 | } | |
5dd0db52 SM |
2239 | |
2240 | #ifdef TARGET_MIPS | |
2241 | static void bswap_mips_abiflags(Mips_elf_abiflags_v0 *abiflags) | |
2242 | { | |
2243 | bswap16s(&abiflags->version); | |
2244 | bswap32s(&abiflags->ases); | |
2245 | bswap32s(&abiflags->isa_ext); | |
2246 | bswap32s(&abiflags->flags1); | |
2247 | bswap32s(&abiflags->flags2); | |
2248 | } | |
2249 | #endif | |
991f8f0c RH |
2250 | #else |
2251 | static inline void bswap_ehdr(struct elfhdr *ehdr) { } | |
2252 | static inline void bswap_phdr(struct elf_phdr *phdr, int phnum) { } | |
2253 | static inline void bswap_shdr(struct elf_shdr *shdr, int shnum) { } | |
2254 | static inline void bswap_sym(struct elf_sym *sym) { } | |
5dd0db52 SM |
2255 | #ifdef TARGET_MIPS |
2256 | static inline void bswap_mips_abiflags(Mips_elf_abiflags_v0 *abiflags) { } | |
2257 | #endif | |
31e31b8a FB |
2258 | #endif |
2259 | ||
edf8e2af | 2260 | #ifdef USE_ELF_CORE_DUMP |
9349b4f9 | 2261 | static int elf_core_dump(int, const CPUArchState *); |
edf8e2af | 2262 | #endif /* USE_ELF_CORE_DUMP */ |
86cf82dc RH |
2263 | static void load_symbols(struct elfhdr *hdr, const ImageSource *src, |
2264 | abi_ulong load_bias); | |
edf8e2af | 2265 | |
9058abdd RH |
2266 | /* Verify the portions of EHDR within E_IDENT for the target. |
2267 | This can be performed before bswapping the entire header. */ | |
2268 | static bool elf_check_ident(struct elfhdr *ehdr) | |
2269 | { | |
2270 | return (ehdr->e_ident[EI_MAG0] == ELFMAG0 | |
2271 | && ehdr->e_ident[EI_MAG1] == ELFMAG1 | |
2272 | && ehdr->e_ident[EI_MAG2] == ELFMAG2 | |
2273 | && ehdr->e_ident[EI_MAG3] == ELFMAG3 | |
2274 | && ehdr->e_ident[EI_CLASS] == ELF_CLASS | |
2275 | && ehdr->e_ident[EI_DATA] == ELF_DATA | |
2276 | && ehdr->e_ident[EI_VERSION] == EV_CURRENT); | |
2277 | } | |
2278 | ||
2279 | /* Verify the portions of EHDR outside of E_IDENT for the target. | |
2280 | This has to wait until after bswapping the header. */ | |
2281 | static bool elf_check_ehdr(struct elfhdr *ehdr) | |
2282 | { | |
2283 | return (elf_check_arch(ehdr->e_machine) | |
ace3d654 | 2284 | && elf_check_abi(ehdr->e_flags) |
9058abdd RH |
2285 | && ehdr->e_ehsize == sizeof(struct elfhdr) |
2286 | && ehdr->e_phentsize == sizeof(struct elf_phdr) | |
9058abdd RH |
2287 | && (ehdr->e_type == ET_EXEC || ehdr->e_type == ET_DYN)); |
2288 | } | |
2289 | ||
31e31b8a | 2290 | /* |
e5fe0c52 | 2291 | * 'copy_elf_strings()' copies argument/envelope strings from user |
31e31b8a FB |
2292 | * memory to free pages in kernel mem. These are in a format ready |
2293 | * to be put directly into the top of new user memory. | |
2294 | * | |
2295 | */ | |
59baae9a SB |
2296 | static abi_ulong copy_elf_strings(int argc, char **argv, char *scratch, |
2297 | abi_ulong p, abi_ulong stack_limit) | |
31e31b8a | 2298 | { |
59baae9a | 2299 | char *tmp; |
7c4ee5bc | 2300 | int len, i; |
59baae9a | 2301 | abi_ulong top = p; |
31e31b8a FB |
2302 | |
2303 | if (!p) { | |
d97ef72e | 2304 | return 0; /* bullet-proofing */ |
31e31b8a | 2305 | } |
59baae9a | 2306 | |
7c4ee5bc RH |
2307 | if (STACK_GROWS_DOWN) { |
2308 | int offset = ((p - 1) % TARGET_PAGE_SIZE) + 1; | |
2309 | for (i = argc - 1; i >= 0; --i) { | |
2310 | tmp = argv[i]; | |
2311 | if (!tmp) { | |
2312 | fprintf(stderr, "VFS: argc is wrong"); | |
2313 | exit(-1); | |
2314 | } | |
2315 | len = strlen(tmp) + 1; | |
2316 | tmp += len; | |
59baae9a | 2317 | |
7c4ee5bc RH |
2318 | if (len > (p - stack_limit)) { |
2319 | return 0; | |
2320 | } | |
2321 | while (len) { | |
2322 | int bytes_to_copy = (len > offset) ? offset : len; | |
2323 | tmp -= bytes_to_copy; | |
2324 | p -= bytes_to_copy; | |
2325 | offset -= bytes_to_copy; | |
2326 | len -= bytes_to_copy; | |
2327 | ||
2328 | memcpy_fromfs(scratch + offset, tmp, bytes_to_copy); | |
2329 | ||
2330 | if (offset == 0) { | |
2331 | memcpy_to_target(p, scratch, top - p); | |
2332 | top = p; | |
2333 | offset = TARGET_PAGE_SIZE; | |
2334 | } | |
2335 | } | |
d97ef72e | 2336 | } |
7c4ee5bc RH |
2337 | if (p != top) { |
2338 | memcpy_to_target(p, scratch + offset, top - p); | |
d97ef72e | 2339 | } |
7c4ee5bc RH |
2340 | } else { |
2341 | int remaining = TARGET_PAGE_SIZE - (p % TARGET_PAGE_SIZE); | |
2342 | for (i = 0; i < argc; ++i) { | |
2343 | tmp = argv[i]; | |
2344 | if (!tmp) { | |
2345 | fprintf(stderr, "VFS: argc is wrong"); | |
2346 | exit(-1); | |
2347 | } | |
2348 | len = strlen(tmp) + 1; | |
2349 | if (len > (stack_limit - p)) { | |
2350 | return 0; | |
2351 | } | |
2352 | while (len) { | |
2353 | int bytes_to_copy = (len > remaining) ? remaining : len; | |
2354 | ||
2355 | memcpy_fromfs(scratch + (p - top), tmp, bytes_to_copy); | |
2356 | ||
2357 | tmp += bytes_to_copy; | |
2358 | remaining -= bytes_to_copy; | |
2359 | p += bytes_to_copy; | |
2360 | len -= bytes_to_copy; | |
2361 | ||
2362 | if (remaining == 0) { | |
2363 | memcpy_to_target(top, scratch, p - top); | |
2364 | top = p; | |
2365 | remaining = TARGET_PAGE_SIZE; | |
2366 | } | |
d97ef72e RH |
2367 | } |
2368 | } | |
7c4ee5bc RH |
2369 | if (p != top) { |
2370 | memcpy_to_target(top, scratch, p - top); | |
2371 | } | |
59baae9a SB |
2372 | } |
2373 | ||
31e31b8a FB |
2374 | return p; |
2375 | } | |
2376 | ||
59baae9a SB |
2377 | /* Older linux kernels provide up to MAX_ARG_PAGES (default: 32) of |
2378 | * argument/environment space. Newer kernels (>2.6.33) allow more, | |
2379 | * dependent on stack size, but guarantee at least 32 pages for | |
2380 | * backwards compatibility. | |
2381 | */ | |
2382 | #define STACK_LOWER_LIMIT (32 * TARGET_PAGE_SIZE) | |
2383 | ||
2384 | static abi_ulong setup_arg_pages(struct linux_binprm *bprm, | |
992f48a0 | 2385 | struct image_info *info) |
53a5960a | 2386 | { |
59baae9a | 2387 | abi_ulong size, error, guard; |
872f3d04 | 2388 | int prot; |
31e31b8a | 2389 | |
703e0e89 | 2390 | size = guest_stack_size; |
59baae9a SB |
2391 | if (size < STACK_LOWER_LIMIT) { |
2392 | size = STACK_LOWER_LIMIT; | |
60dcbcb5 | 2393 | } |
f4388205 HD |
2394 | |
2395 | if (STACK_GROWS_DOWN) { | |
2396 | guard = TARGET_PAGE_SIZE; | |
2397 | if (guard < qemu_real_host_page_size()) { | |
2398 | guard = qemu_real_host_page_size(); | |
2399 | } | |
2400 | } else { | |
2401 | /* no guard page for hppa target where stack grows upwards. */ | |
2402 | guard = 0; | |
60dcbcb5 RH |
2403 | } |
2404 | ||
872f3d04 RH |
2405 | prot = PROT_READ | PROT_WRITE; |
2406 | if (info->exec_stack) { | |
2407 | prot |= PROT_EXEC; | |
2408 | } | |
2409 | error = target_mmap(0, size + guard, prot, | |
60dcbcb5 | 2410 | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); |
09bfb054 | 2411 | if (error == -1) { |
60dcbcb5 | 2412 | perror("mmap stack"); |
09bfb054 FB |
2413 | exit(-1); |
2414 | } | |
31e31b8a | 2415 | |
60dcbcb5 | 2416 | /* We reserve one extra page at the top of the stack as guard. */ |
7c4ee5bc RH |
2417 | if (STACK_GROWS_DOWN) { |
2418 | target_mprotect(error, guard, PROT_NONE); | |
2419 | info->stack_limit = error + guard; | |
2420 | return info->stack_limit + size - sizeof(void *); | |
2421 | } else { | |
7c4ee5bc RH |
2422 | info->stack_limit = error + size; |
2423 | return error; | |
2424 | } | |
31e31b8a FB |
2425 | } |
2426 | ||
2d385be6 RH |
2427 | /** |
2428 | * zero_bss: | |
2429 | * | |
2430 | * Map and zero the bss. We need to explicitly zero any fractional pages | |
2431 | * after the data section (i.e. bss). Return false on mapping failure. | |
2432 | */ | |
e6e66b03 RH |
2433 | static bool zero_bss(abi_ulong start_bss, abi_ulong end_bss, |
2434 | int prot, Error **errp) | |
2d385be6 RH |
2435 | { |
2436 | abi_ulong align_bss; | |
853d6f7a | 2437 | |
e6e66b03 RH |
2438 | /* We only expect writable bss; the code segment shouldn't need this. */ |
2439 | if (!(prot & PROT_WRITE)) { | |
2440 | error_setg(errp, "PT_LOAD with non-writable bss"); | |
2441 | return false; | |
2442 | } | |
2443 | ||
2d385be6 RH |
2444 | align_bss = TARGET_PAGE_ALIGN(start_bss); |
2445 | end_bss = TARGET_PAGE_ALIGN(end_bss); | |
2446 | ||
2447 | if (start_bss < align_bss) { | |
2448 | int flags = page_get_flags(start_bss); | |
31e31b8a | 2449 | |
e6e66b03 RH |
2450 | if (!(flags & PAGE_BITS)) { |
2451 | /* | |
2452 | * The whole address space of the executable was reserved | |
2453 | * at the start, therefore all pages will be VALID. | |
2454 | * But assuming there are no PROT_NONE PT_LOAD segments, | |
2455 | * a PROT_NONE page means no data all bss, and we can | |
2456 | * simply extend the new anon mapping back to the start | |
2457 | * of the page of bss. | |
2458 | */ | |
2d385be6 | 2459 | align_bss -= TARGET_PAGE_SIZE; |
2d385be6 | 2460 | } else { |
e6e66b03 RH |
2461 | /* |
2462 | * The start of the bss shares a page with something. | |
2463 | * The only thing that we expect is the data section, | |
2464 | * which would already be marked writable. | |
2465 | * Overlapping the RX code segment seems malformed. | |
2466 | */ | |
2467 | if (!(flags & PAGE_WRITE)) { | |
2468 | error_setg(errp, "PT_LOAD with bss overlapping " | |
2469 | "non-writable page"); | |
2470 | return false; | |
2471 | } | |
2472 | ||
2473 | /* The page is already mapped and writable. */ | |
2474 | memset(g2h_untagged(start_bss), 0, align_bss - start_bss); | |
2d385be6 | 2475 | } |
cf129f3a | 2476 | } |
2d385be6 | 2477 | |
e6e66b03 RH |
2478 | if (align_bss < end_bss && |
2479 | target_mmap(align_bss, end_bss - align_bss, prot, | |
2480 | MAP_FIXED | MAP_PRIVATE | MAP_ANON, -1, 0) == -1) { | |
2481 | error_setg_errno(errp, errno, "Error mapping bss"); | |
2482 | return false; | |
2483 | } | |
2484 | return true; | |
cf129f3a | 2485 | } |
53a5960a | 2486 | |
d2796be6 | 2487 | #if defined(TARGET_ARM) |
cf58affe CL |
2488 | static int elf_is_fdpic(struct elfhdr *exec) |
2489 | { | |
2490 | return exec->e_ident[EI_OSABI] == ELFOSABI_ARM_FDPIC; | |
2491 | } | |
d2796be6 MF |
2492 | #elif defined(TARGET_XTENSA) |
2493 | static int elf_is_fdpic(struct elfhdr *exec) | |
2494 | { | |
2495 | return exec->e_ident[EI_OSABI] == ELFOSABI_XTENSA_FDPIC; | |
2496 | } | |
cf58affe | 2497 | #else |
a99856cd CL |
2498 | /* Default implementation, always false. */ |
2499 | static int elf_is_fdpic(struct elfhdr *exec) | |
2500 | { | |
2501 | return 0; | |
2502 | } | |
cf58affe | 2503 | #endif |
a99856cd | 2504 | |
1af02e83 MF |
2505 | static abi_ulong loader_build_fdpic_loadmap(struct image_info *info, abi_ulong sp) |
2506 | { | |
2507 | uint16_t n; | |
2508 | struct elf32_fdpic_loadseg *loadsegs = info->loadsegs; | |
2509 | ||
2510 | /* elf32_fdpic_loadseg */ | |
2511 | n = info->nsegs; | |
2512 | while (n--) { | |
2513 | sp -= 12; | |
2514 | put_user_u32(loadsegs[n].addr, sp+0); | |
2515 | put_user_u32(loadsegs[n].p_vaddr, sp+4); | |
2516 | put_user_u32(loadsegs[n].p_memsz, sp+8); | |
2517 | } | |
2518 | ||
2519 | /* elf32_fdpic_loadmap */ | |
2520 | sp -= 4; | |
2521 | put_user_u16(0, sp+0); /* version */ | |
2522 | put_user_u16(info->nsegs, sp+2); /* nsegs */ | |
2523 | ||
2524 | info->personality = PER_LINUX_FDPIC; | |
2525 | info->loadmap_addr = sp; | |
2526 | ||
2527 | return sp; | |
2528 | } | |
1af02e83 | 2529 | |
992f48a0 | 2530 | static abi_ulong create_elf_tables(abi_ulong p, int argc, int envc, |
8e62a717 RH |
2531 | struct elfhdr *exec, |
2532 | struct image_info *info, | |
c40f621a RH |
2533 | struct image_info *interp_info, |
2534 | struct image_info *vdso_info) | |
31e31b8a | 2535 | { |
d97ef72e | 2536 | abi_ulong sp; |
7c4ee5bc | 2537 | abi_ulong u_argc, u_argv, u_envp, u_auxv; |
d97ef72e | 2538 | int size; |
14322bad LA |
2539 | int i; |
2540 | abi_ulong u_rand_bytes; | |
2541 | uint8_t k_rand_bytes[16]; | |
fcdc0ab4 JY |
2542 | abi_ulong u_platform, u_base_platform; |
2543 | const char *k_platform, *k_base_platform; | |
d97ef72e RH |
2544 | const int n = sizeof(elf_addr_t); |
2545 | ||
2546 | sp = p; | |
1af02e83 | 2547 | |
1af02e83 MF |
2548 | /* Needs to be before we load the env/argc/... */ |
2549 | if (elf_is_fdpic(exec)) { | |
2550 | /* Need 4 byte alignment for these structs */ | |
2551 | sp &= ~3; | |
2552 | sp = loader_build_fdpic_loadmap(info, sp); | |
2553 | info->other_info = interp_info; | |
2554 | if (interp_info) { | |
2555 | interp_info->other_info = info; | |
2556 | sp = loader_build_fdpic_loadmap(interp_info, sp); | |
3cb10cfa CL |
2557 | info->interpreter_loadmap_addr = interp_info->loadmap_addr; |
2558 | info->interpreter_pt_dynamic_addr = interp_info->pt_dynamic_addr; | |
2559 | } else { | |
2560 | info->interpreter_loadmap_addr = 0; | |
2561 | info->interpreter_pt_dynamic_addr = 0; | |
1af02e83 MF |
2562 | } |
2563 | } | |
1af02e83 | 2564 | |
fcdc0ab4 JY |
2565 | u_base_platform = 0; |
2566 | k_base_platform = ELF_BASE_PLATFORM; | |
2567 | if (k_base_platform) { | |
2568 | size_t len = strlen(k_base_platform) + 1; | |
2569 | if (STACK_GROWS_DOWN) { | |
2570 | sp -= (len + n - 1) & ~(n - 1); | |
2571 | u_base_platform = sp; | |
2572 | /* FIXME - check return value of memcpy_to_target() for failure */ | |
2573 | memcpy_to_target(sp, k_base_platform, len); | |
2574 | } else { | |
2575 | memcpy_to_target(sp, k_base_platform, len); | |
2576 | u_base_platform = sp; | |
2577 | sp += len + 1; | |
2578 | } | |
2579 | } | |
2580 | ||
d97ef72e RH |
2581 | u_platform = 0; |
2582 | k_platform = ELF_PLATFORM; | |
2583 | if (k_platform) { | |
2584 | size_t len = strlen(k_platform) + 1; | |
7c4ee5bc RH |
2585 | if (STACK_GROWS_DOWN) { |
2586 | sp -= (len + n - 1) & ~(n - 1); | |
2587 | u_platform = sp; | |
2588 | /* FIXME - check return value of memcpy_to_target() for failure */ | |
2589 | memcpy_to_target(sp, k_platform, len); | |
2590 | } else { | |
2591 | memcpy_to_target(sp, k_platform, len); | |
2592 | u_platform = sp; | |
2593 | sp += len + 1; | |
2594 | } | |
2595 | } | |
2596 | ||
2597 | /* Provide 16 byte alignment for the PRNG, and basic alignment for | |
2598 | * the argv and envp pointers. | |
2599 | */ | |
2600 | if (STACK_GROWS_DOWN) { | |
2601 | sp = QEMU_ALIGN_DOWN(sp, 16); | |
2602 | } else { | |
2603 | sp = QEMU_ALIGN_UP(sp, 16); | |
d97ef72e | 2604 | } |
14322bad LA |
2605 | |
2606 | /* | |
c6a2377f | 2607 | * Generate 16 random bytes for userspace PRNG seeding. |
14322bad | 2608 | */ |
c6a2377f | 2609 | qemu_guest_getrandom_nofail(k_rand_bytes, sizeof(k_rand_bytes)); |
7c4ee5bc RH |
2610 | if (STACK_GROWS_DOWN) { |
2611 | sp -= 16; | |
2612 | u_rand_bytes = sp; | |
2613 | /* FIXME - check return value of memcpy_to_target() for failure */ | |
2614 | memcpy_to_target(sp, k_rand_bytes, 16); | |
2615 | } else { | |
2616 | memcpy_to_target(sp, k_rand_bytes, 16); | |
2617 | u_rand_bytes = sp; | |
2618 | sp += 16; | |
2619 | } | |
14322bad | 2620 | |
d97ef72e | 2621 | size = (DLINFO_ITEMS + 1) * 2; |
c40f621a | 2622 | if (k_base_platform) { |
fcdc0ab4 | 2623 | size += 2; |
c40f621a RH |
2624 | } |
2625 | if (k_platform) { | |
fcdc0ab4 | 2626 | size += 2; |
c40f621a RH |
2627 | } |
2628 | if (vdso_info) { | |
d97ef72e | 2629 | size += 2; |
c40f621a | 2630 | } |
f5155289 | 2631 | #ifdef DLINFO_ARCH_ITEMS |
d97ef72e | 2632 | size += DLINFO_ARCH_ITEMS * 2; |
ad6919dc PM |
2633 | #endif |
2634 | #ifdef ELF_HWCAP2 | |
2635 | size += 2; | |
f5155289 | 2636 | #endif |
f516511e PM |
2637 | info->auxv_len = size * n; |
2638 | ||
d97ef72e | 2639 | size += envc + argc + 2; |
b9329d4b | 2640 | size += 1; /* argc itself */ |
d97ef72e | 2641 | size *= n; |
7c4ee5bc RH |
2642 | |
2643 | /* Allocate space and finalize stack alignment for entry now. */ | |
2644 | if (STACK_GROWS_DOWN) { | |
2645 | u_argc = QEMU_ALIGN_DOWN(sp - size, STACK_ALIGNMENT); | |
2646 | sp = u_argc; | |
2647 | } else { | |
2648 | u_argc = sp; | |
2649 | sp = QEMU_ALIGN_UP(sp + size, STACK_ALIGNMENT); | |
2650 | } | |
2651 | ||
2652 | u_argv = u_argc + n; | |
2653 | u_envp = u_argv + (argc + 1) * n; | |
2654 | u_auxv = u_envp + (envc + 1) * n; | |
2655 | info->saved_auxv = u_auxv; | |
60f1c801 RH |
2656 | info->argc = argc; |
2657 | info->envc = envc; | |
2658 | info->argv = u_argv; | |
2659 | info->envp = u_envp; | |
d97ef72e RH |
2660 | |
2661 | /* This is correct because Linux defines | |
2662 | * elf_addr_t as Elf32_Off / Elf64_Off | |
2663 | */ | |
2664 | #define NEW_AUX_ENT(id, val) do { \ | |
7c4ee5bc RH |
2665 | put_user_ual(id, u_auxv); u_auxv += n; \ |
2666 | put_user_ual(val, u_auxv); u_auxv += n; \ | |
d97ef72e RH |
2667 | } while(0) |
2668 | ||
82991bed PM |
2669 | #ifdef ARCH_DLINFO |
2670 | /* | |
2671 | * ARCH_DLINFO must come first so platform specific code can enforce | |
2672 | * special alignment requirements on the AUXV if necessary (eg. PPC). | |
2673 | */ | |
2674 | ARCH_DLINFO; | |
2675 | #endif | |
f516511e PM |
2676 | /* There must be exactly DLINFO_ITEMS entries here, or the assert |
2677 | * on info->auxv_len will trigger. | |
2678 | */ | |
8e62a717 | 2679 | NEW_AUX_ENT(AT_PHDR, (abi_ulong)(info->load_addr + exec->e_phoff)); |
d97ef72e RH |
2680 | NEW_AUX_ENT(AT_PHENT, (abi_ulong)(sizeof (struct elf_phdr))); |
2681 | NEW_AUX_ENT(AT_PHNUM, (abi_ulong)(exec->e_phnum)); | |
33143c44 LV |
2682 | if ((info->alignment & ~qemu_host_page_mask) != 0) { |
2683 | /* Target doesn't support host page size alignment */ | |
2684 | NEW_AUX_ENT(AT_PAGESZ, (abi_ulong)(TARGET_PAGE_SIZE)); | |
2685 | } else { | |
2686 | NEW_AUX_ENT(AT_PAGESZ, (abi_ulong)(MAX(TARGET_PAGE_SIZE, | |
2687 | qemu_host_page_size))); | |
2688 | } | |
8e62a717 | 2689 | NEW_AUX_ENT(AT_BASE, (abi_ulong)(interp_info ? interp_info->load_addr : 0)); |
d97ef72e | 2690 | NEW_AUX_ENT(AT_FLAGS, (abi_ulong)0); |
8e62a717 | 2691 | NEW_AUX_ENT(AT_ENTRY, info->entry); |
d97ef72e RH |
2692 | NEW_AUX_ENT(AT_UID, (abi_ulong) getuid()); |
2693 | NEW_AUX_ENT(AT_EUID, (abi_ulong) geteuid()); | |
2694 | NEW_AUX_ENT(AT_GID, (abi_ulong) getgid()); | |
2695 | NEW_AUX_ENT(AT_EGID, (abi_ulong) getegid()); | |
2696 | NEW_AUX_ENT(AT_HWCAP, (abi_ulong) ELF_HWCAP); | |
2697 | NEW_AUX_ENT(AT_CLKTCK, (abi_ulong) sysconf(_SC_CLK_TCK)); | |
14322bad | 2698 | NEW_AUX_ENT(AT_RANDOM, (abi_ulong) u_rand_bytes); |
444cd5c3 | 2699 | NEW_AUX_ENT(AT_SECURE, (abi_ulong) qemu_getauxval(AT_SECURE)); |
e0d1673d | 2700 | NEW_AUX_ENT(AT_EXECFN, info->file_string); |
14322bad | 2701 | |
ad6919dc PM |
2702 | #ifdef ELF_HWCAP2 |
2703 | NEW_AUX_ENT(AT_HWCAP2, (abi_ulong) ELF_HWCAP2); | |
2704 | #endif | |
2705 | ||
fcdc0ab4 JY |
2706 | if (u_base_platform) { |
2707 | NEW_AUX_ENT(AT_BASE_PLATFORM, u_base_platform); | |
2708 | } | |
7c4ee5bc | 2709 | if (u_platform) { |
d97ef72e | 2710 | NEW_AUX_ENT(AT_PLATFORM, u_platform); |
7c4ee5bc | 2711 | } |
c40f621a RH |
2712 | if (vdso_info) { |
2713 | NEW_AUX_ENT(AT_SYSINFO_EHDR, vdso_info->load_addr); | |
2714 | } | |
7c4ee5bc | 2715 | NEW_AUX_ENT (AT_NULL, 0); |
f5155289 FB |
2716 | #undef NEW_AUX_ENT |
2717 | ||
f516511e PM |
2718 | /* Check that our initial calculation of the auxv length matches how much |
2719 | * we actually put into it. | |
2720 | */ | |
2721 | assert(info->auxv_len == u_auxv - info->saved_auxv); | |
7c4ee5bc RH |
2722 | |
2723 | put_user_ual(argc, u_argc); | |
2724 | ||
2725 | p = info->arg_strings; | |
2726 | for (i = 0; i < argc; ++i) { | |
2727 | put_user_ual(p, u_argv); | |
2728 | u_argv += n; | |
2729 | p += target_strlen(p) + 1; | |
2730 | } | |
2731 | put_user_ual(0, u_argv); | |
2732 | ||
2733 | p = info->env_strings; | |
2734 | for (i = 0; i < envc; ++i) { | |
2735 | put_user_ual(p, u_envp); | |
2736 | u_envp += n; | |
2737 | p += target_strlen(p) + 1; | |
2738 | } | |
2739 | put_user_ual(0, u_envp); | |
edf8e2af | 2740 | |
d97ef72e | 2741 | return sp; |
31e31b8a FB |
2742 | } |
2743 | ||
f5ef0e51 | 2744 | #if defined(HI_COMMPAGE) |
eee816c0 | 2745 | #define LO_COMMPAGE -1 |
f5ef0e51 RH |
2746 | #elif defined(LO_COMMPAGE) |
2747 | #define HI_COMMPAGE 0 | |
2748 | #else | |
66346faf | 2749 | #define HI_COMMPAGE 0 |
eee816c0 | 2750 | #define LO_COMMPAGE -1 |
d461b73e | 2751 | #ifndef INIT_GUEST_COMMPAGE |
ee947430 | 2752 | #define init_guest_commpage() true |
8756e136 | 2753 | #endif |
d461b73e | 2754 | #endif |
dce10401 | 2755 | |
06f38c66 RH |
2756 | /** |
2757 | * pgb_try_mmap: | |
2758 | * @addr: host start address | |
2759 | * @addr_last: host last address | |
2760 | * @keep: do not unmap the probe region | |
2761 | * | |
2762 | * Return 1 if [@addr, @addr_last] is not mapped in the host, | |
2763 | * return 0 if it is not available to map, and -1 on mmap error. | |
2764 | * If @keep, the region is left mapped on success, otherwise unmapped. | |
2765 | */ | |
2766 | static int pgb_try_mmap(uintptr_t addr, uintptr_t addr_last, bool keep) | |
2767 | { | |
2768 | size_t size = addr_last - addr + 1; | |
2769 | void *p = mmap((void *)addr, size, PROT_NONE, | |
2770 | MAP_ANONYMOUS | MAP_PRIVATE | | |
2771 | MAP_NORESERVE | MAP_FIXED_NOREPLACE, -1, 0); | |
2772 | int ret; | |
2773 | ||
2774 | if (p == MAP_FAILED) { | |
2775 | return errno == EEXIST ? 0 : -1; | |
2776 | } | |
2777 | ret = p == (void *)addr; | |
2778 | if (!keep || !ret) { | |
2779 | munmap(p, size); | |
2780 | } | |
2781 | return ret; | |
2782 | } | |
2783 | ||
2784 | /** | |
2785 | * pgb_try_mmap_skip_brk(uintptr_t addr, uintptr_t size, uintptr_t brk) | |
2786 | * @addr: host address | |
2787 | * @addr_last: host last address | |
2788 | * @brk: host brk | |
2789 | * | |
2790 | * Like pgb_try_mmap, but additionally reserve some memory following brk. | |
2791 | */ | |
2792 | static int pgb_try_mmap_skip_brk(uintptr_t addr, uintptr_t addr_last, | |
2793 | uintptr_t brk, bool keep) | |
2794 | { | |
2795 | uintptr_t brk_last = brk + 16 * MiB - 1; | |
2796 | ||
2797 | /* Do not map anything close to the host brk. */ | |
2798 | if (addr <= brk_last && brk <= addr_last) { | |
2799 | return 0; | |
2800 | } | |
2801 | return pgb_try_mmap(addr, addr_last, keep); | |
2802 | } | |
2803 | ||
2804 | /** | |
2805 | * pgb_try_mmap_set: | |
2806 | * @ga: set of guest addrs | |
2807 | * @base: guest_base | |
2808 | * @brk: host brk | |
2809 | * | |
2810 | * Return true if all @ga can be mapped by the host at @base. | |
2811 | * On success, retain the mapping at index 0 for reserved_va. | |
2812 | */ | |
2813 | ||
2814 | typedef struct PGBAddrs { | |
2815 | uintptr_t bounds[3][2]; /* start/last pairs */ | |
2816 | int nbounds; | |
2817 | } PGBAddrs; | |
2818 | ||
2819 | static bool pgb_try_mmap_set(const PGBAddrs *ga, uintptr_t base, uintptr_t brk) | |
2820 | { | |
2821 | for (int i = ga->nbounds - 1; i >= 0; --i) { | |
2822 | if (pgb_try_mmap_skip_brk(ga->bounds[i][0] + base, | |
2823 | ga->bounds[i][1] + base, | |
2824 | brk, i == 0 && reserved_va) <= 0) { | |
2825 | return false; | |
2826 | } | |
2827 | } | |
2828 | return true; | |
2829 | } | |
2830 | ||
2831 | /** | |
2832 | * pgb_addr_set: | |
2833 | * @ga: output set of guest addrs | |
2834 | * @guest_loaddr: guest image low address | |
2835 | * @guest_loaddr: guest image high address | |
2836 | * @identity: create for identity mapping | |
2837 | * | |
2838 | * Fill in @ga with the image, COMMPAGE and NULL page. | |
2839 | */ | |
2840 | static bool pgb_addr_set(PGBAddrs *ga, abi_ulong guest_loaddr, | |
2841 | abi_ulong guest_hiaddr, bool try_identity) | |
2842 | { | |
2843 | int n; | |
2844 | ||
2845 | /* | |
2846 | * With a low commpage, or a guest mapped very low, | |
2847 | * we may not be able to use the identity map. | |
2848 | */ | |
2849 | if (try_identity) { | |
2850 | if (LO_COMMPAGE != -1 && LO_COMMPAGE < mmap_min_addr) { | |
2851 | return false; | |
2852 | } | |
2853 | if (guest_loaddr != 0 && guest_loaddr < mmap_min_addr) { | |
2854 | return false; | |
2855 | } | |
2856 | } | |
2857 | ||
2858 | memset(ga, 0, sizeof(*ga)); | |
2859 | n = 0; | |
2860 | ||
2861 | if (reserved_va) { | |
2862 | ga->bounds[n][0] = try_identity ? mmap_min_addr : 0; | |
2863 | ga->bounds[n][1] = reserved_va; | |
2864 | n++; | |
2865 | /* LO_COMMPAGE and NULL handled by reserving from 0. */ | |
2866 | } else { | |
2867 | /* Add any LO_COMMPAGE or NULL page. */ | |
2868 | if (LO_COMMPAGE != -1) { | |
2869 | ga->bounds[n][0] = 0; | |
2870 | ga->bounds[n][1] = LO_COMMPAGE + TARGET_PAGE_SIZE - 1; | |
2871 | n++; | |
2872 | } else if (!try_identity) { | |
2873 | ga->bounds[n][0] = 0; | |
2874 | ga->bounds[n][1] = TARGET_PAGE_SIZE - 1; | |
2875 | n++; | |
2876 | } | |
2877 | ||
2878 | /* Add the guest image for ET_EXEC. */ | |
2879 | if (guest_loaddr) { | |
2880 | ga->bounds[n][0] = guest_loaddr; | |
2881 | ga->bounds[n][1] = guest_hiaddr; | |
2882 | n++; | |
2883 | } | |
2884 | } | |
2885 | ||
2886 | /* | |
2887 | * Temporarily disable | |
2888 | * "comparison is always false due to limited range of data type" | |
2889 | * due to comparison between unsigned and (possible) 0. | |
2890 | */ | |
2891 | #pragma GCC diagnostic push | |
2892 | #pragma GCC diagnostic ignored "-Wtype-limits" | |
2893 | ||
2894 | /* Add any HI_COMMPAGE not covered by reserved_va. */ | |
2895 | if (reserved_va < HI_COMMPAGE) { | |
2896 | ga->bounds[n][0] = HI_COMMPAGE & qemu_host_page_mask; | |
2897 | ga->bounds[n][1] = HI_COMMPAGE + TARGET_PAGE_SIZE - 1; | |
2898 | n++; | |
2899 | } | |
2900 | ||
2901 | #pragma GCC diagnostic pop | |
2902 | ||
2903 | ga->nbounds = n; | |
2904 | return true; | |
2905 | } | |
2906 | ||
ee947430 AB |
2907 | static void pgb_fail_in_use(const char *image_name) |
2908 | { | |
2909 | error_report("%s: requires virtual address space that is in use " | |
2910 | "(omit the -B option or choose a different value)", | |
2911 | image_name); | |
2912 | exit(EXIT_FAILURE); | |
2913 | } | |
dce10401 | 2914 | |
06f38c66 RH |
2915 | static void pgb_fixed(const char *image_name, uintptr_t guest_loaddr, |
2916 | uintptr_t guest_hiaddr, uintptr_t align) | |
ee947430 | 2917 | { |
06f38c66 RH |
2918 | PGBAddrs ga; |
2919 | uintptr_t brk = (uintptr_t)sbrk(0); | |
2a53535a | 2920 | |
ee947430 | 2921 | if (!QEMU_IS_ALIGNED(guest_base, align)) { |
5ca870b9 | 2922 | fprintf(stderr, "Requested guest base %p does not satisfy " |
06f38c66 | 2923 | "host minimum alignment (0x%" PRIxPTR ")\n", |
5ca870b9 | 2924 | (void *)guest_base, align); |
ee947430 AB |
2925 | exit(EXIT_FAILURE); |
2926 | } | |
2927 | ||
06f38c66 RH |
2928 | if (!pgb_addr_set(&ga, guest_loaddr, guest_hiaddr, !guest_base) |
2929 | || !pgb_try_mmap_set(&ga, guest_base, brk)) { | |
ee947430 AB |
2930 | pgb_fail_in_use(image_name); |
2931 | } | |
2932 | } | |
2933 | ||
ad592e37 | 2934 | /** |
dd558855 | 2935 | * pgb_find_fallback: |
ad592e37 | 2936 | * |
dd558855 RH |
2937 | * This is a fallback method for finding holes in the host address space |
2938 | * if we don't have the benefit of being able to access /proc/self/map. | |
2939 | * It can potentially take a very long time as we can only dumbly iterate | |
2940 | * up the host address space seeing if the allocation would work. | |
ad592e37 | 2941 | */ |
dd558855 RH |
2942 | static uintptr_t pgb_find_fallback(const PGBAddrs *ga, uintptr_t align, |
2943 | uintptr_t brk) | |
ad592e37 | 2944 | { |
dd558855 RH |
2945 | /* TODO: come up with a better estimate of how much to skip. */ |
2946 | uintptr_t skip = sizeof(uintptr_t) == 4 ? MiB : GiB; | |
ad592e37 | 2947 | |
dd558855 RH |
2948 | for (uintptr_t base = skip; ; base += skip) { |
2949 | base = ROUND_UP(base, align); | |
2950 | if (pgb_try_mmap_set(ga, base, brk)) { | |
2951 | return base; | |
2952 | } | |
2953 | if (base >= -skip) { | |
ad592e37 | 2954 | return -1; |
ad592e37 AB |
2955 | } |
2956 | } | |
2957 | } | |
2958 | ||
dd558855 RH |
2959 | static uintptr_t pgb_try_itree(const PGBAddrs *ga, uintptr_t base, |
2960 | IntervalTreeRoot *root) | |
ee947430 | 2961 | { |
dd558855 RH |
2962 | for (int i = ga->nbounds - 1; i >= 0; --i) { |
2963 | uintptr_t s = base + ga->bounds[i][0]; | |
2964 | uintptr_t l = base + ga->bounds[i][1]; | |
2965 | IntervalTreeNode *n; | |
dce10401 | 2966 | |
dd558855 RH |
2967 | if (l < s) { |
2968 | /* Wraparound. Skip to advance S to mmap_min_addr. */ | |
2969 | return mmap_min_addr - s; | |
2970 | } | |
ee947430 | 2971 | |
dd558855 RH |
2972 | n = interval_tree_iter_first(root, s, l); |
2973 | if (n != NULL) { | |
2974 | /* Conflict. Skip to advance S to LAST + 1. */ | |
2975 | return n->last - s + 1; | |
2976 | } | |
ad592e37 | 2977 | } |
dd558855 RH |
2978 | return 0; /* success */ |
2979 | } | |
ad592e37 | 2980 | |
dd558855 RH |
2981 | static uintptr_t pgb_find_itree(const PGBAddrs *ga, IntervalTreeRoot *root, |
2982 | uintptr_t align, uintptr_t brk) | |
2983 | { | |
2984 | uintptr_t last = mmap_min_addr; | |
2985 | uintptr_t base, skip; | |
ee947430 | 2986 | |
dd558855 RH |
2987 | while (true) { |
2988 | base = ROUND_UP(last, align); | |
2989 | if (base < last) { | |
2990 | return -1; | |
aac362e4 LS |
2991 | } |
2992 | ||
dd558855 RH |
2993 | skip = pgb_try_itree(ga, base, root); |
2994 | if (skip == 0) { | |
2995 | break; | |
806d1021 MI |
2996 | } |
2997 | ||
dd558855 RH |
2998 | last = base + skip; |
2999 | if (last < base) { | |
3000 | return -1; | |
dce10401 MI |
3001 | } |
3002 | } | |
dd558855 RH |
3003 | |
3004 | /* | |
3005 | * We've chosen 'base' based on holes in the interval tree, | |
3006 | * but we don't yet know if it is a valid host address. | |
3007 | * Because it is the first matching hole, if the host addresses | |
3008 | * are invalid we know there are no further matches. | |
3009 | */ | |
3010 | return pgb_try_mmap_set(ga, base, brk) ? base : -1; | |
dce10401 MI |
3011 | } |
3012 | ||
dd558855 RH |
3013 | static void pgb_dynamic(const char *image_name, uintptr_t guest_loaddr, |
3014 | uintptr_t guest_hiaddr, uintptr_t align) | |
f3ed1f5d | 3015 | { |
dd558855 RH |
3016 | IntervalTreeRoot *root; |
3017 | uintptr_t brk, ret; | |
3018 | PGBAddrs ga; | |
f3ed1f5d | 3019 | |
dd558855 | 3020 | assert(QEMU_IS_ALIGNED(guest_loaddr, align)); |
dce10401 | 3021 | |
dd558855 RH |
3022 | /* Try the identity map first. */ |
3023 | if (pgb_addr_set(&ga, guest_loaddr, guest_hiaddr, true)) { | |
3024 | brk = (uintptr_t)sbrk(0); | |
3025 | if (pgb_try_mmap_set(&ga, 0, brk)) { | |
3026 | guest_base = 0; | |
3027 | return; | |
3028 | } | |
ee947430 AB |
3029 | } |
3030 | ||
ee947430 | 3031 | /* |
dd558855 RH |
3032 | * Rebuild the address set for non-identity map. |
3033 | * This differs in the mapping of the guest NULL page. | |
ee947430 | 3034 | */ |
dd558855 | 3035 | pgb_addr_set(&ga, guest_loaddr, guest_hiaddr, false); |
ee947430 | 3036 | |
dd558855 RH |
3037 | root = read_self_maps(); |
3038 | ||
3039 | /* Read brk after we've read the maps, which will malloc. */ | |
3040 | brk = (uintptr_t)sbrk(0); | |
ee947430 | 3041 | |
dd558855 RH |
3042 | if (!root) { |
3043 | ret = pgb_find_fallback(&ga, align, brk); | |
3044 | } else { | |
ee947430 | 3045 | /* |
dd558855 RH |
3046 | * Reserve the area close to the host brk. |
3047 | * This will be freed with the rest of the tree. | |
ee947430 | 3048 | */ |
dd558855 RH |
3049 | IntervalTreeNode *b = g_new0(IntervalTreeNode, 1); |
3050 | b->start = brk; | |
3051 | b->last = brk + 16 * MiB - 1; | |
3052 | interval_tree_insert(b, root); | |
ee947430 | 3053 | |
dd558855 RH |
3054 | ret = pgb_find_itree(&ga, root, align, brk); |
3055 | free_self_maps(root); | |
3056 | } | |
ee947430 | 3057 | |
dd558855 RH |
3058 | if (ret == -1) { |
3059 | int w = TARGET_LONG_BITS / 4; | |
ee947430 | 3060 | |
dd558855 RH |
3061 | error_report("%s: Unable to find a guest_base to satisfy all " |
3062 | "guest address mapping requirements", image_name); | |
c1f6ad79 | 3063 | |
dd558855 RH |
3064 | for (int i = 0; i < ga.nbounds; ++i) { |
3065 | error_printf(" %0*" PRIx64 "-%0*" PRIx64 "\n", | |
3066 | w, (uint64_t)ga.bounds[i][0], | |
3067 | w, (uint64_t)ga.bounds[i][1]); | |
3068 | } | |
ee947430 AB |
3069 | exit(EXIT_FAILURE); |
3070 | } | |
dd558855 | 3071 | guest_base = ret; |
f3ed1f5d PM |
3072 | } |
3073 | ||
ee947430 AB |
3074 | void probe_guest_base(const char *image_name, abi_ulong guest_loaddr, |
3075 | abi_ulong guest_hiaddr) | |
3076 | { | |
3077 | /* In order to use host shmat, we must be able to honor SHMLBA. */ | |
3078 | uintptr_t align = MAX(SHMLBA, qemu_host_page_size); | |
3079 | ||
0c441aeb RH |
3080 | /* Sanity check the guest binary. */ |
3081 | if (reserved_va) { | |
3082 | if (guest_hiaddr > reserved_va) { | |
3083 | error_report("%s: requires more than reserved virtual " | |
3084 | "address space (0x%" PRIx64 " > 0x%lx)", | |
3085 | image_name, (uint64_t)guest_hiaddr, reserved_va); | |
3086 | exit(EXIT_FAILURE); | |
3087 | } | |
3088 | } else { | |
3089 | if (guest_hiaddr != (uintptr_t)guest_hiaddr) { | |
3090 | error_report("%s: requires more virtual address space " | |
3091 | "than the host can provide (0x%" PRIx64 ")", | |
3092 | image_name, (uint64_t)guest_hiaddr + 1); | |
3093 | exit(EXIT_FAILURE); | |
3094 | } | |
3095 | } | |
3096 | ||
ee947430 | 3097 | if (have_guest_base) { |
06f38c66 | 3098 | pgb_fixed(image_name, guest_loaddr, guest_hiaddr, align); |
ee947430 | 3099 | } else { |
dd558855 | 3100 | pgb_dynamic(image_name, guest_loaddr, guest_hiaddr, align); |
ee947430 AB |
3101 | } |
3102 | ||
3103 | /* Reserve and initialize the commpage. */ | |
3104 | if (!init_guest_commpage()) { | |
06f38c66 RH |
3105 | /* We have already probed for the commpage being free. */ |
3106 | g_assert_not_reached(); | |
ee947430 AB |
3107 | } |
3108 | ||
3109 | assert(QEMU_IS_ALIGNED(guest_base, align)); | |
3110 | qemu_log_mask(CPU_LOG_PAGE, "Locating guest address space " | |
3111 | "@ 0x%" PRIx64 "\n", (uint64_t)guest_base); | |
3112 | } | |
f3ed1f5d | 3113 | |
83f990eb RH |
3114 | enum { |
3115 | /* The string "GNU\0" as a magic number. */ | |
3116 | GNU0_MAGIC = const_le32('G' | 'N' << 8 | 'U' << 16), | |
3117 | NOTE_DATA_SZ = 1 * KiB, | |
3118 | NOTE_NAME_SZ = 4, | |
3119 | ELF_GNU_PROPERTY_ALIGN = ELF_CLASS == ELFCLASS32 ? 4 : 8, | |
3120 | }; | |
3121 | ||
3122 | /* | |
3123 | * Process a single gnu_property entry. | |
3124 | * Return false for error. | |
3125 | */ | |
3126 | static bool parse_elf_property(const uint32_t *data, int *off, int datasz, | |
3127 | struct image_info *info, bool have_prev_type, | |
3128 | uint32_t *prev_type, Error **errp) | |
3129 | { | |
3130 | uint32_t pr_type, pr_datasz, step; | |
3131 | ||
3132 | if (*off > datasz || !QEMU_IS_ALIGNED(*off, ELF_GNU_PROPERTY_ALIGN)) { | |
3133 | goto error_data; | |
3134 | } | |
3135 | datasz -= *off; | |
3136 | data += *off / sizeof(uint32_t); | |
3137 | ||
3138 | if (datasz < 2 * sizeof(uint32_t)) { | |
3139 | goto error_data; | |
3140 | } | |
3141 | pr_type = data[0]; | |
3142 | pr_datasz = data[1]; | |
3143 | data += 2; | |
3144 | datasz -= 2 * sizeof(uint32_t); | |
3145 | step = ROUND_UP(pr_datasz, ELF_GNU_PROPERTY_ALIGN); | |
3146 | if (step > datasz) { | |
3147 | goto error_data; | |
3148 | } | |
3149 | ||
3150 | /* Properties are supposed to be unique and sorted on pr_type. */ | |
3151 | if (have_prev_type && pr_type <= *prev_type) { | |
3152 | if (pr_type == *prev_type) { | |
3153 | error_setg(errp, "Duplicate property in PT_GNU_PROPERTY"); | |
3154 | } else { | |
3155 | error_setg(errp, "Unsorted property in PT_GNU_PROPERTY"); | |
3156 | } | |
3157 | return false; | |
3158 | } | |
3159 | *prev_type = pr_type; | |
3160 | ||
3161 | if (!arch_parse_elf_property(pr_type, pr_datasz, data, info, errp)) { | |
3162 | return false; | |
3163 | } | |
3164 | ||
3165 | *off += 2 * sizeof(uint32_t) + step; | |
3166 | return true; | |
3167 | ||
3168 | error_data: | |
3169 | error_setg(errp, "Ill-formed property in PT_GNU_PROPERTY"); | |
3170 | return false; | |
3171 | } | |
3172 | ||
3173 | /* Process NT_GNU_PROPERTY_TYPE_0. */ | |
3bd02386 | 3174 | static bool parse_elf_properties(const ImageSource *src, |
83f990eb RH |
3175 | struct image_info *info, |
3176 | const struct elf_phdr *phdr, | |
83f990eb RH |
3177 | Error **errp) |
3178 | { | |
3179 | union { | |
3180 | struct elf_note nhdr; | |
3181 | uint32_t data[NOTE_DATA_SZ / sizeof(uint32_t)]; | |
3182 | } note; | |
3183 | ||
3184 | int n, off, datasz; | |
3185 | bool have_prev_type; | |
3186 | uint32_t prev_type; | |
3187 | ||
3188 | /* Unless the arch requires properties, ignore them. */ | |
3189 | if (!ARCH_USE_GNU_PROPERTY) { | |
3190 | return true; | |
3191 | } | |
3192 | ||
3193 | /* If the properties are crazy large, that's too bad. */ | |
3194 | n = phdr->p_filesz; | |
3195 | if (n > sizeof(note)) { | |
3196 | error_setg(errp, "PT_GNU_PROPERTY too large"); | |
3197 | return false; | |
3198 | } | |
3199 | if (n < sizeof(note.nhdr)) { | |
3200 | error_setg(errp, "PT_GNU_PROPERTY too small"); | |
3201 | return false; | |
3202 | } | |
3203 | ||
3bd02386 RH |
3204 | if (!imgsrc_read(¬e, phdr->p_offset, n, src, errp)) { |
3205 | return false; | |
83f990eb RH |
3206 | } |
3207 | ||
3208 | /* | |
3209 | * The contents of a valid PT_GNU_PROPERTY is a sequence | |
3210 | * of uint32_t -- swap them all now. | |
3211 | */ | |
3212 | #ifdef BSWAP_NEEDED | |
3213 | for (int i = 0; i < n / 4; i++) { | |
3214 | bswap32s(note.data + i); | |
3215 | } | |
3216 | #endif | |
3217 | ||
3218 | /* | |
3219 | * Note that nhdr is 3 words, and that the "name" described by namesz | |
3220 | * immediately follows nhdr and is thus at the 4th word. Further, all | |
3221 | * of the inputs to the kernel's round_up are multiples of 4. | |
3222 | */ | |
3223 | if (note.nhdr.n_type != NT_GNU_PROPERTY_TYPE_0 || | |
3224 | note.nhdr.n_namesz != NOTE_NAME_SZ || | |
3225 | note.data[3] != GNU0_MAGIC) { | |
3226 | error_setg(errp, "Invalid note in PT_GNU_PROPERTY"); | |
3227 | return false; | |
3228 | } | |
3229 | off = sizeof(note.nhdr) + NOTE_NAME_SZ; | |
3230 | ||
3231 | datasz = note.nhdr.n_descsz + off; | |
3232 | if (datasz > n) { | |
3233 | error_setg(errp, "Invalid note size in PT_GNU_PROPERTY"); | |
3234 | return false; | |
3235 | } | |
3236 | ||
3237 | have_prev_type = false; | |
3238 | prev_type = 0; | |
3239 | while (1) { | |
3240 | if (off == datasz) { | |
3241 | return true; /* end, exit ok */ | |
3242 | } | |
3243 | if (!parse_elf_property(note.data, &off, datasz, info, | |
3244 | have_prev_type, &prev_type, errp)) { | |
3245 | return false; | |
3246 | } | |
3247 | have_prev_type = true; | |
3248 | } | |
3249 | } | |
3250 | ||
3bd02386 RH |
3251 | /** |
3252 | * load_elf_image: Load an ELF image into the address space. | |
3253 | * @image_name: the filename of the image, to use in error messages. | |
3254 | * @src: the ImageSource from which to read. | |
3255 | * @info: info collected from the loaded image. | |
3256 | * @ehdr: the ELF header, not yet bswapped. | |
3257 | * @pinterp_name: record any PT_INTERP string found. | |
3258 | * | |
3259 | * On return: @info values will be filled in, as necessary or available. | |
3260 | */ | |
8e62a717 | 3261 | |
3bd02386 | 3262 | static void load_elf_image(const char *image_name, const ImageSource *src, |
40d487ee | 3263 | struct image_info *info, struct elfhdr *ehdr, |
3bd02386 | 3264 | char **pinterp_name) |
31e31b8a | 3265 | { |
3bd02386 | 3266 | g_autofree struct elf_phdr *phdr = NULL; |
8e62a717 | 3267 | abi_ulong load_addr, load_bias, loaddr, hiaddr, error; |
3bd02386 | 3268 | int i, prot_exec; |
c7f17e7b | 3269 | Error *err = NULL; |
5fafdf24 | 3270 | |
3bd02386 RH |
3271 | /* |
3272 | * First of all, some simple consistency checks. | |
3273 | * Note that we rely on the bswapped ehdr staying in bprm_buf, | |
3274 | * for later use by load_elf_binary and create_elf_tables. | |
3275 | */ | |
3276 | if (!imgsrc_read(ehdr, 0, sizeof(*ehdr), src, &err)) { | |
3277 | goto exit_errmsg; | |
3278 | } | |
8e62a717 | 3279 | if (!elf_check_ident(ehdr)) { |
c7f17e7b | 3280 | error_setg(&err, "Invalid ELF image for this architecture"); |
8e62a717 RH |
3281 | goto exit_errmsg; |
3282 | } | |
3283 | bswap_ehdr(ehdr); | |
3284 | if (!elf_check_ehdr(ehdr)) { | |
c7f17e7b | 3285 | error_setg(&err, "Invalid ELF image for this architecture"); |
8e62a717 | 3286 | goto exit_errmsg; |
d97ef72e | 3287 | } |
5fafdf24 | 3288 | |
3bd02386 RH |
3289 | phdr = imgsrc_read_alloc(ehdr->e_phoff, |
3290 | ehdr->e_phnum * sizeof(struct elf_phdr), | |
3291 | src, &err); | |
3292 | if (phdr == NULL) { | |
3293 | goto exit_errmsg; | |
d97ef72e | 3294 | } |
8e62a717 | 3295 | bswap_phdr(phdr, ehdr->e_phnum); |
09bfb054 | 3296 | |
1af02e83 MF |
3297 | info->nsegs = 0; |
3298 | info->pt_dynamic_addr = 0; | |
1af02e83 | 3299 | |
98c1076c AB |
3300 | mmap_lock(); |
3301 | ||
8a1a5274 RH |
3302 | /* |
3303 | * Find the maximum size of the image and allocate an appropriate | |
3304 | * amount of memory to handle that. Locate the interpreter, if any. | |
3305 | */ | |
682674b8 | 3306 | loaddr = -1, hiaddr = 0; |
33143c44 | 3307 | info->alignment = 0; |
872f3d04 | 3308 | info->exec_stack = EXSTACK_DEFAULT; |
8e62a717 | 3309 | for (i = 0; i < ehdr->e_phnum; ++i) { |
4d9d535a RH |
3310 | struct elf_phdr *eppnt = phdr + i; |
3311 | if (eppnt->p_type == PT_LOAD) { | |
82d70a84 | 3312 | abi_ulong a = eppnt->p_vaddr & TARGET_PAGE_MASK; |
682674b8 RH |
3313 | if (a < loaddr) { |
3314 | loaddr = a; | |
3315 | } | |
a3a67f54 | 3316 | a = eppnt->p_vaddr + eppnt->p_memsz - 1; |
682674b8 RH |
3317 | if (a > hiaddr) { |
3318 | hiaddr = a; | |
3319 | } | |
1af02e83 | 3320 | ++info->nsegs; |
4d9d535a | 3321 | info->alignment |= eppnt->p_align; |
8a1a5274 RH |
3322 | } else if (eppnt->p_type == PT_INTERP && pinterp_name) { |
3323 | g_autofree char *interp_name = NULL; | |
3324 | ||
3325 | if (*pinterp_name) { | |
c7f17e7b | 3326 | error_setg(&err, "Multiple PT_INTERP entries"); |
8a1a5274 RH |
3327 | goto exit_errmsg; |
3328 | } | |
c7f17e7b | 3329 | |
3bd02386 RH |
3330 | interp_name = imgsrc_read_alloc(eppnt->p_offset, eppnt->p_filesz, |
3331 | src, &err); | |
3332 | if (interp_name == NULL) { | |
3333 | goto exit_errmsg; | |
8a1a5274 RH |
3334 | } |
3335 | if (interp_name[eppnt->p_filesz - 1] != 0) { | |
c7f17e7b | 3336 | error_setg(&err, "Invalid PT_INTERP entry"); |
8a1a5274 RH |
3337 | goto exit_errmsg; |
3338 | } | |
3339 | *pinterp_name = g_steal_pointer(&interp_name); | |
83f990eb | 3340 | } else if (eppnt->p_type == PT_GNU_PROPERTY) { |
3bd02386 | 3341 | if (!parse_elf_properties(src, info, eppnt, &err)) { |
83f990eb RH |
3342 | goto exit_errmsg; |
3343 | } | |
872f3d04 RH |
3344 | } else if (eppnt->p_type == PT_GNU_STACK) { |
3345 | info->exec_stack = eppnt->p_flags & PF_X; | |
682674b8 RH |
3346 | } |
3347 | } | |
3348 | ||
1ea06ded RH |
3349 | load_addr = loaddr; |
3350 | ||
6fd59449 | 3351 | if (pinterp_name != NULL) { |
6fd59449 RH |
3352 | if (ehdr->e_type == ET_EXEC) { |
3353 | /* | |
3354 | * Make sure that the low address does not conflict with | |
3355 | * MMAP_MIN_ADDR or the QEMU application itself. | |
3356 | */ | |
3357 | probe_guest_base(image_name, loaddr, hiaddr); | |
ee947430 | 3358 | } else { |
1ea06ded RH |
3359 | abi_ulong align; |
3360 | ||
ee947430 AB |
3361 | /* |
3362 | * The binary is dynamic, but we still need to | |
3363 | * select guest_base. In this case we pass a size. | |
3364 | */ | |
3365 | probe_guest_base(image_name, 0, hiaddr - loaddr); | |
1ea06ded RH |
3366 | |
3367 | /* | |
3368 | * Avoid collision with the loader by providing a different | |
3369 | * default load address. | |
3370 | */ | |
3371 | load_addr += elf_et_dyn_base; | |
3372 | ||
3373 | /* | |
3374 | * TODO: Better support for mmap alignment is desirable. | |
3375 | * Since we do not have complete control over the guest | |
3376 | * address space, we prefer the kernel to choose some address | |
3377 | * rather than force the use of LOAD_ADDR via MAP_FIXED. | |
3378 | * But without MAP_FIXED we cannot guarantee alignment, | |
3379 | * only suggest it. | |
3380 | */ | |
3381 | align = pow2ceil(info->alignment); | |
3382 | if (align) { | |
3383 | load_addr &= -align; | |
3384 | } | |
d97ef72e | 3385 | } |
6fd59449 RH |
3386 | } |
3387 | ||
3388 | /* | |
3389 | * Reserve address space for all of this. | |
3390 | * | |
ad25051b RH |
3391 | * In the case of ET_EXEC, we supply MAP_FIXED_NOREPLACE so that we get |
3392 | * exactly the address range that is required. Without reserved_va, | |
3393 | * the guest address space is not isolated. We have attempted to avoid | |
3394 | * conflict with the host program itself via probe_guest_base, but using | |
3395 | * MAP_FIXED_NOREPLACE instead of MAP_FIXED provides an extra check. | |
6fd59449 RH |
3396 | * |
3397 | * Otherwise this is ET_DYN, and we are searching for a location | |
3398 | * that can hold the memory space required. If the image is | |
1ea06ded | 3399 | * pre-linked, LOAD_ADDR will be non-zero, and the kernel should |
6fd59449 RH |
3400 | * honor that address if it happens to be free. |
3401 | * | |
3402 | * In both cases, we will overwrite pages in this range with mappings | |
3403 | * from the executable. | |
3404 | */ | |
1ea06ded | 3405 | load_addr = target_mmap(load_addr, (size_t)hiaddr - loaddr + 1, PROT_NONE, |
6fd59449 | 3406 | MAP_PRIVATE | MAP_ANON | MAP_NORESERVE | |
ad25051b | 3407 | (ehdr->e_type == ET_EXEC ? MAP_FIXED_NOREPLACE : 0), |
6fd59449 RH |
3408 | -1, 0); |
3409 | if (load_addr == -1) { | |
c7f17e7b | 3410 | goto exit_mmap; |
d97ef72e | 3411 | } |
682674b8 | 3412 | load_bias = load_addr - loaddr; |
d97ef72e | 3413 | |
a99856cd | 3414 | if (elf_is_fdpic(ehdr)) { |
1af02e83 | 3415 | struct elf32_fdpic_loadseg *loadsegs = info->loadsegs = |
7267c094 | 3416 | g_malloc(sizeof(*loadsegs) * info->nsegs); |
1af02e83 MF |
3417 | |
3418 | for (i = 0; i < ehdr->e_phnum; ++i) { | |
3419 | switch (phdr[i].p_type) { | |
3420 | case PT_DYNAMIC: | |
3421 | info->pt_dynamic_addr = phdr[i].p_vaddr + load_bias; | |
3422 | break; | |
3423 | case PT_LOAD: | |
3424 | loadsegs->addr = phdr[i].p_vaddr + load_bias; | |
3425 | loadsegs->p_vaddr = phdr[i].p_vaddr; | |
3426 | loadsegs->p_memsz = phdr[i].p_memsz; | |
3427 | ++loadsegs; | |
3428 | break; | |
3429 | } | |
3430 | } | |
3431 | } | |
1af02e83 | 3432 | |
8e62a717 | 3433 | info->load_bias = load_bias; |
dc12567a JK |
3434 | info->code_offset = load_bias; |
3435 | info->data_offset = load_bias; | |
8e62a717 RH |
3436 | info->load_addr = load_addr; |
3437 | info->entry = ehdr->e_entry + load_bias; | |
3438 | info->start_code = -1; | |
3439 | info->end_code = 0; | |
3440 | info->start_data = -1; | |
3441 | info->end_data = 0; | |
1f356e8c | 3442 | /* Usual start for brk is after all sections of the main executable. */ |
aec338d6 | 3443 | info->brk = TARGET_PAGE_ALIGN(hiaddr + load_bias); |
d8fd2954 | 3444 | info->elf_flags = ehdr->e_flags; |
8e62a717 | 3445 | |
e8384b37 RH |
3446 | prot_exec = PROT_EXEC; |
3447 | #ifdef TARGET_AARCH64 | |
3448 | /* | |
3449 | * If the BTI feature is present, this indicates that the executable | |
3450 | * pages of the startup binary should be mapped with PROT_BTI, so that | |
3451 | * branch targets are enforced. | |
3452 | * | |
3453 | * The startup binary is either the interpreter or the static executable. | |
3454 | * The interpreter is responsible for all pages of a dynamic executable. | |
3455 | * | |
3456 | * Elf notes are backward compatible to older cpus. | |
3457 | * Do not enable BTI unless it is supported. | |
3458 | */ | |
3459 | if ((info->note_flags & GNU_PROPERTY_AARCH64_FEATURE_1_BTI) | |
3460 | && (pinterp_name == NULL || *pinterp_name == 0) | |
3461 | && cpu_isar_feature(aa64_bti, ARM_CPU(thread_cpu))) { | |
3462 | prot_exec |= TARGET_PROT_BTI; | |
3463 | } | |
3464 | #endif | |
3465 | ||
8e62a717 RH |
3466 | for (i = 0; i < ehdr->e_phnum; i++) { |
3467 | struct elf_phdr *eppnt = phdr + i; | |
d97ef72e | 3468 | if (eppnt->p_type == PT_LOAD) { |
5f4e5b34 | 3469 | abi_ulong vaddr, vaddr_po, vaddr_ps, vaddr_ef, vaddr_em; |
d97ef72e | 3470 | int elf_prot = 0; |
d97ef72e | 3471 | |
e5eaf570 RH |
3472 | if (eppnt->p_flags & PF_R) { |
3473 | elf_prot |= PROT_READ; | |
3474 | } | |
3475 | if (eppnt->p_flags & PF_W) { | |
3476 | elf_prot |= PROT_WRITE; | |
3477 | } | |
3478 | if (eppnt->p_flags & PF_X) { | |
e8384b37 | 3479 | elf_prot |= prot_exec; |
e5eaf570 | 3480 | } |
d97ef72e | 3481 | |
682674b8 | 3482 | vaddr = load_bias + eppnt->p_vaddr; |
e3d97d5c RH |
3483 | vaddr_po = vaddr & ~TARGET_PAGE_MASK; |
3484 | vaddr_ps = vaddr & TARGET_PAGE_MASK; | |
22d113b5 GM |
3485 | |
3486 | vaddr_ef = vaddr + eppnt->p_filesz; | |
3487 | vaddr_em = vaddr + eppnt->p_memsz; | |
682674b8 | 3488 | |
d87146bc | 3489 | /* |
22d113b5 GM |
3490 | * Some segments may be completely empty, with a non-zero p_memsz |
3491 | * but no backing file segment. | |
d87146bc GM |
3492 | */ |
3493 | if (eppnt->p_filesz != 0) { | |
3bd02386 | 3494 | error = imgsrc_mmap(vaddr_ps, eppnt->p_filesz + vaddr_po, |
5f4e5b34 | 3495 | elf_prot, MAP_PRIVATE | MAP_FIXED, |
3bd02386 | 3496 | src, eppnt->p_offset - vaddr_po); |
d87146bc | 3497 | if (error == -1) { |
c7f17e7b | 3498 | goto exit_mmap; |
d87146bc | 3499 | } |
5f4e5b34 | 3500 | } |
09bfb054 | 3501 | |
5f4e5b34 RH |
3502 | /* If the load segment requests extra zeros (e.g. bss), map it. */ |
3503 | if (vaddr_ef < vaddr_em && | |
e6e66b03 RH |
3504 | !zero_bss(vaddr_ef, vaddr_em, elf_prot, &err)) { |
3505 | goto exit_errmsg; | |
cf129f3a | 3506 | } |
8e62a717 RH |
3507 | |
3508 | /* Find the full program boundaries. */ | |
3509 | if (elf_prot & PROT_EXEC) { | |
3510 | if (vaddr < info->start_code) { | |
3511 | info->start_code = vaddr; | |
3512 | } | |
3513 | if (vaddr_ef > info->end_code) { | |
3514 | info->end_code = vaddr_ef; | |
3515 | } | |
3516 | } | |
3517 | if (elf_prot & PROT_WRITE) { | |
3518 | if (vaddr < info->start_data) { | |
3519 | info->start_data = vaddr; | |
3520 | } | |
3521 | if (vaddr_ef > info->end_data) { | |
3522 | info->end_data = vaddr_ef; | |
3523 | } | |
8a045188 | 3524 | } |
5dd0db52 SM |
3525 | #ifdef TARGET_MIPS |
3526 | } else if (eppnt->p_type == PT_MIPS_ABIFLAGS) { | |
3527 | Mips_elf_abiflags_v0 abiflags; | |
3bd02386 RH |
3528 | |
3529 | if (!imgsrc_read(&abiflags, eppnt->p_offset, sizeof(abiflags), | |
3530 | src, &err)) { | |
5dd0db52 SM |
3531 | goto exit_errmsg; |
3532 | } | |
5dd0db52 | 3533 | bswap_mips_abiflags(&abiflags); |
c94cb6c9 | 3534 | info->fp_abi = abiflags.fp_abi; |
5dd0db52 | 3535 | #endif |
d97ef72e | 3536 | } |
682674b8 | 3537 | } |
5fafdf24 | 3538 | |
8e62a717 RH |
3539 | if (info->end_data == 0) { |
3540 | info->start_data = info->end_code; | |
3541 | info->end_data = info->end_code; | |
8e62a717 RH |
3542 | } |
3543 | ||
682674b8 | 3544 | if (qemu_log_enabled()) { |
86cf82dc | 3545 | load_symbols(ehdr, src, load_bias); |
682674b8 | 3546 | } |
31e31b8a | 3547 | |
3bd02386 | 3548 | debuginfo_report_elf(image_name, src->fd, load_bias); |
7c10cb38 | 3549 | |
98c1076c AB |
3550 | mmap_unlock(); |
3551 | ||
3bd02386 | 3552 | close(src->fd); |
8e62a717 RH |
3553 | return; |
3554 | ||
c7f17e7b RH |
3555 | exit_mmap: |
3556 | error_setg_errno(&err, errno, "Error mapping file"); | |
3557 | goto exit_errmsg; | |
8e62a717 | 3558 | exit_errmsg: |
c7f17e7b | 3559 | error_reportf_err(err, "%s: ", image_name); |
8e62a717 RH |
3560 | exit(-1); |
3561 | } | |
3562 | ||
3563 | static void load_elf_interp(const char *filename, struct image_info *info, | |
3564 | char bprm_buf[BPRM_BUF_SIZE]) | |
3565 | { | |
40d487ee | 3566 | struct elfhdr ehdr; |
3bd02386 | 3567 | ImageSource src; |
8e62a717 | 3568 | int fd, retval; |
808f6563 | 3569 | Error *err = NULL; |
8e62a717 RH |
3570 | |
3571 | fd = open(path(filename), O_RDONLY); | |
3572 | if (fd < 0) { | |
808f6563 RH |
3573 | error_setg_file_open(&err, errno, filename); |
3574 | error_report_err(err); | |
3575 | exit(-1); | |
8e62a717 | 3576 | } |
31e31b8a | 3577 | |
8e62a717 RH |
3578 | retval = read(fd, bprm_buf, BPRM_BUF_SIZE); |
3579 | if (retval < 0) { | |
808f6563 RH |
3580 | error_setg_errno(&err, errno, "Error reading file header"); |
3581 | error_reportf_err(err, "%s: ", filename); | |
3582 | exit(-1); | |
8e62a717 | 3583 | } |
808f6563 | 3584 | |
3bd02386 RH |
3585 | src.fd = fd; |
3586 | src.cache = bprm_buf; | |
3587 | src.cache_size = retval; | |
8e62a717 | 3588 | |
3bd02386 | 3589 | load_elf_image(filename, &src, info, &ehdr, NULL); |
31e31b8a FB |
3590 | } |
3591 | ||
c40f621a RH |
3592 | #ifdef VDSO_HEADER |
3593 | #include VDSO_HEADER | |
3594 | #define vdso_image_info() &vdso_image_info | |
3595 | #else | |
3596 | #define vdso_image_info() NULL | |
3597 | #endif | |
3598 | ||
3599 | static void load_elf_vdso(struct image_info *info, const VdsoImageInfo *vdso) | |
3600 | { | |
3601 | ImageSource src; | |
3602 | struct elfhdr ehdr; | |
3603 | abi_ulong load_bias, load_addr; | |
3604 | ||
3605 | src.fd = -1; | |
3606 | src.cache = vdso->image; | |
3607 | src.cache_size = vdso->image_size; | |
3608 | ||
3609 | load_elf_image("<internal-vdso>", &src, info, &ehdr, NULL); | |
3610 | load_addr = info->load_addr; | |
3611 | load_bias = info->load_bias; | |
3612 | ||
3613 | /* | |
3614 | * We need to relocate the VDSO image. The one built into the kernel | |
3615 | * is built for a fixed address. The one built for QEMU is not, since | |
3616 | * that requires close control of the guest address space. | |
3617 | * We pre-processed the image to locate all of the addresses that need | |
3618 | * to be updated. | |
3619 | */ | |
3620 | for (unsigned i = 0, n = vdso->reloc_count; i < n; i++) { | |
3621 | abi_ulong *addr = g2h_untagged(load_addr + vdso->relocs[i]); | |
3622 | *addr = tswapal(tswapal(*addr) + load_bias); | |
3623 | } | |
3624 | ||
3625 | /* Install signal trampolines, if present. */ | |
3626 | if (vdso->sigreturn_ofs) { | |
3627 | default_sigreturn = load_addr + vdso->sigreturn_ofs; | |
3628 | } | |
3629 | if (vdso->rt_sigreturn_ofs) { | |
3630 | default_rt_sigreturn = load_addr + vdso->rt_sigreturn_ofs; | |
8e62a717 RH |
3631 | } |
3632 | ||
c40f621a RH |
3633 | /* Remove write from VDSO segment. */ |
3634 | target_mprotect(info->start_data, info->end_data - info->start_data, | |
3635 | PROT_READ | PROT_EXEC); | |
31e31b8a FB |
3636 | } |
3637 | ||
49918a75 PB |
3638 | static int symfind(const void *s0, const void *s1) |
3639 | { | |
49918a75 | 3640 | struct elf_sym *sym = (struct elf_sym *)s1; |
b6235a75 | 3641 | __typeof(sym->st_value) addr = *(uint64_t *)s0; |
49918a75 | 3642 | int result = 0; |
b6235a75 | 3643 | |
c7c530cd | 3644 | if (addr < sym->st_value) { |
49918a75 | 3645 | result = -1; |
c7c530cd | 3646 | } else if (addr >= sym->st_value + sym->st_size) { |
49918a75 PB |
3647 | result = 1; |
3648 | } | |
3649 | return result; | |
3650 | } | |
3651 | ||
b6235a75 | 3652 | static const char *lookup_symbolxx(struct syminfo *s, uint64_t orig_addr) |
49918a75 PB |
3653 | { |
3654 | #if ELF_CLASS == ELFCLASS32 | |
3655 | struct elf_sym *syms = s->disas_symtab.elf32; | |
3656 | #else | |
3657 | struct elf_sym *syms = s->disas_symtab.elf64; | |
3658 | #endif | |
3659 | ||
3660 | // binary search | |
49918a75 PB |
3661 | struct elf_sym *sym; |
3662 | ||
c7c530cd | 3663 | sym = bsearch(&orig_addr, syms, s->disas_num_syms, sizeof(*syms), symfind); |
7cba04f6 | 3664 | if (sym != NULL) { |
49918a75 PB |
3665 | return s->disas_strtab + sym->st_name; |
3666 | } | |
3667 | ||
3668 | return ""; | |
3669 | } | |
3670 | ||
3671 | /* FIXME: This should use elf_ops.h */ | |
3672 | static int symcmp(const void *s0, const void *s1) | |
3673 | { | |
3674 | struct elf_sym *sym0 = (struct elf_sym *)s0; | |
3675 | struct elf_sym *sym1 = (struct elf_sym *)s1; | |
3676 | return (sym0->st_value < sym1->st_value) | |
3677 | ? -1 | |
3678 | : ((sym0->st_value > sym1->st_value) ? 1 : 0); | |
3679 | } | |
3680 | ||
689f936f | 3681 | /* Best attempt to load symbols from this ELF object. */ |
86cf82dc RH |
3682 | static void load_symbols(struct elfhdr *hdr, const ImageSource *src, |
3683 | abi_ulong load_bias) | |
689f936f | 3684 | { |
682674b8 | 3685 | int i, shnum, nsyms, sym_idx = 0, str_idx = 0; |
86cf82dc | 3686 | g_autofree struct elf_shdr *shdr = NULL; |
b9475279 | 3687 | char *strings = NULL; |
86cf82dc RH |
3688 | struct elf_sym *syms = NULL; |
3689 | struct elf_sym *new_syms; | |
3690 | uint64_t segsz; | |
689f936f | 3691 | |
682674b8 | 3692 | shnum = hdr->e_shnum; |
86cf82dc RH |
3693 | shdr = imgsrc_read_alloc(hdr->e_shoff, shnum * sizeof(struct elf_shdr), |
3694 | src, NULL); | |
3695 | if (shdr == NULL) { | |
682674b8 RH |
3696 | return; |
3697 | } | |
3698 | ||
3699 | bswap_shdr(shdr, shnum); | |
3700 | for (i = 0; i < shnum; ++i) { | |
3701 | if (shdr[i].sh_type == SHT_SYMTAB) { | |
3702 | sym_idx = i; | |
3703 | str_idx = shdr[i].sh_link; | |
49918a75 PB |
3704 | goto found; |
3705 | } | |
689f936f | 3706 | } |
682674b8 RH |
3707 | |
3708 | /* There will be no symbol table if the file was stripped. */ | |
3709 | return; | |
689f936f FB |
3710 | |
3711 | found: | |
682674b8 | 3712 | /* Now know where the strtab and symtab are. Snarf them. */ |
5fafdf24 | 3713 | |
1e06262d | 3714 | segsz = shdr[str_idx].sh_size; |
86cf82dc RH |
3715 | strings = g_try_malloc(segsz); |
3716 | if (!strings) { | |
b9475279 | 3717 | goto give_up; |
682674b8 | 3718 | } |
86cf82dc | 3719 | if (!imgsrc_read(strings, shdr[str_idx].sh_offset, segsz, src, NULL)) { |
b9475279 | 3720 | goto give_up; |
682674b8 | 3721 | } |
31e31b8a | 3722 | |
86cf82dc | 3723 | segsz = shdr[sym_idx].sh_size; |
1e06262d | 3724 | if (segsz / sizeof(struct elf_sym) > INT_MAX) { |
86cf82dc RH |
3725 | /* |
3726 | * Implausibly large symbol table: give up rather than ploughing | |
3727 | * on with the number of symbols calculation overflowing. | |
1e06262d PM |
3728 | */ |
3729 | goto give_up; | |
3730 | } | |
3731 | nsyms = segsz / sizeof(struct elf_sym); | |
86cf82dc RH |
3732 | syms = g_try_malloc(segsz); |
3733 | if (!syms) { | |
3734 | goto give_up; | |
3735 | } | |
3736 | if (!imgsrc_read(syms, shdr[sym_idx].sh_offset, segsz, src, NULL)) { | |
3737 | goto give_up; | |
3738 | } | |
3739 | ||
682674b8 | 3740 | for (i = 0; i < nsyms; ) { |
49918a75 | 3741 | bswap_sym(syms + i); |
682674b8 RH |
3742 | /* Throw away entries which we do not need. */ |
3743 | if (syms[i].st_shndx == SHN_UNDEF | |
3744 | || syms[i].st_shndx >= SHN_LORESERVE | |
3745 | || ELF_ST_TYPE(syms[i].st_info) != STT_FUNC) { | |
3746 | if (i < --nsyms) { | |
49918a75 PB |
3747 | syms[i] = syms[nsyms]; |
3748 | } | |
682674b8 | 3749 | } else { |
49918a75 | 3750 | #if defined(TARGET_ARM) || defined (TARGET_MIPS) |
682674b8 RH |
3751 | /* The bottom address bit marks a Thumb or MIPS16 symbol. */ |
3752 | syms[i].st_value &= ~(target_ulong)1; | |
0774bed1 | 3753 | #endif |
682674b8 RH |
3754 | syms[i].st_value += load_bias; |
3755 | i++; | |
3756 | } | |
0774bed1 | 3757 | } |
49918a75 | 3758 | |
b9475279 CV |
3759 | /* No "useful" symbol. */ |
3760 | if (nsyms == 0) { | |
3761 | goto give_up; | |
3762 | } | |
3763 | ||
86cf82dc RH |
3764 | /* |
3765 | * Attempt to free the storage associated with the local symbols | |
3766 | * that we threw away. Whether or not this has any effect on the | |
3767 | * memory allocation depends on the malloc implementation and how | |
3768 | * many symbols we managed to discard. | |
3769 | */ | |
0ef9ea29 | 3770 | new_syms = g_try_renew(struct elf_sym, syms, nsyms); |
8d79de6e | 3771 | if (new_syms == NULL) { |
b9475279 | 3772 | goto give_up; |
5d5c9930 | 3773 | } |
8d79de6e | 3774 | syms = new_syms; |
5d5c9930 | 3775 | |
49918a75 | 3776 | qsort(syms, nsyms, sizeof(*syms), symcmp); |
689f936f | 3777 | |
86cf82dc RH |
3778 | { |
3779 | struct syminfo *s = g_new(struct syminfo, 1); | |
3780 | ||
3781 | s->disas_strtab = strings; | |
3782 | s->disas_num_syms = nsyms; | |
49918a75 | 3783 | #if ELF_CLASS == ELFCLASS32 |
86cf82dc | 3784 | s->disas_symtab.elf32 = syms; |
49918a75 | 3785 | #else |
86cf82dc | 3786 | s->disas_symtab.elf64 = syms; |
49918a75 | 3787 | #endif |
86cf82dc RH |
3788 | s->lookup_symbol = lookup_symbolxx; |
3789 | s->next = syminfos; | |
3790 | syminfos = s; | |
3791 | } | |
b9475279 CV |
3792 | return; |
3793 | ||
86cf82dc | 3794 | give_up: |
0ef9ea29 PM |
3795 | g_free(strings); |
3796 | g_free(syms); | |
689f936f | 3797 | } |
31e31b8a | 3798 | |
768fe76e YS |
3799 | uint32_t get_elf_eflags(int fd) |
3800 | { | |
3801 | struct elfhdr ehdr; | |
3802 | off_t offset; | |
3803 | int ret; | |
3804 | ||
3805 | /* Read ELF header */ | |
3806 | offset = lseek(fd, 0, SEEK_SET); | |
3807 | if (offset == (off_t) -1) { | |
3808 | return 0; | |
3809 | } | |
3810 | ret = read(fd, &ehdr, sizeof(ehdr)); | |
3811 | if (ret < sizeof(ehdr)) { | |
3812 | return 0; | |
3813 | } | |
3814 | offset = lseek(fd, offset, SEEK_SET); | |
3815 | if (offset == (off_t) -1) { | |
3816 | return 0; | |
3817 | } | |
3818 | ||
3819 | /* Check ELF signature */ | |
3820 | if (!elf_check_ident(&ehdr)) { | |
3821 | return 0; | |
3822 | } | |
3823 | ||
3824 | /* check header */ | |
3825 | bswap_ehdr(&ehdr); | |
3826 | if (!elf_check_ehdr(&ehdr)) { | |
3827 | return 0; | |
3828 | } | |
3829 | ||
3830 | /* return architecture id */ | |
3831 | return ehdr.e_flags; | |
3832 | } | |
3833 | ||
f0116c54 | 3834 | int load_elf_binary(struct linux_binprm *bprm, struct image_info *info) |
31e31b8a | 3835 | { |
40d487ee RH |
3836 | /* |
3837 | * We need a copy of the elf header for passing to create_elf_tables. | |
3838 | * We will have overwritten the original when we re-use bprm->buf | |
3839 | * while loading the interpreter. Allocate the storage for this now | |
3840 | * and let elf_load_image do any swapping that may be required. | |
3841 | */ | |
3842 | struct elfhdr ehdr; | |
c40f621a | 3843 | struct image_info interp_info, vdso_info; |
8e62a717 | 3844 | char *elf_interpreter = NULL; |
59baae9a | 3845 | char *scratch; |
31e31b8a | 3846 | |
abcac736 DS |
3847 | memset(&interp_info, 0, sizeof(interp_info)); |
3848 | #ifdef TARGET_MIPS | |
3849 | interp_info.fp_abi = MIPS_ABI_FP_UNKNOWN; | |
3850 | #endif | |
3851 | ||
3bd02386 | 3852 | load_elf_image(bprm->filename, &bprm->src, info, &ehdr, &elf_interpreter); |
31e31b8a | 3853 | |
59baae9a SB |
3854 | /* Do this so that we can load the interpreter, if need be. We will |
3855 | change some of these later */ | |
3856 | bprm->p = setup_arg_pages(bprm, info); | |
3857 | ||
3858 | scratch = g_new0(char, TARGET_PAGE_SIZE); | |
7c4ee5bc RH |
3859 | if (STACK_GROWS_DOWN) { |
3860 | bprm->p = copy_elf_strings(1, &bprm->filename, scratch, | |
3861 | bprm->p, info->stack_limit); | |
3862 | info->file_string = bprm->p; | |
3863 | bprm->p = copy_elf_strings(bprm->envc, bprm->envp, scratch, | |
3864 | bprm->p, info->stack_limit); | |
3865 | info->env_strings = bprm->p; | |
3866 | bprm->p = copy_elf_strings(bprm->argc, bprm->argv, scratch, | |
3867 | bprm->p, info->stack_limit); | |
3868 | info->arg_strings = bprm->p; | |
3869 | } else { | |
3870 | info->arg_strings = bprm->p; | |
3871 | bprm->p = copy_elf_strings(bprm->argc, bprm->argv, scratch, | |
3872 | bprm->p, info->stack_limit); | |
3873 | info->env_strings = bprm->p; | |
3874 | bprm->p = copy_elf_strings(bprm->envc, bprm->envp, scratch, | |
3875 | bprm->p, info->stack_limit); | |
3876 | info->file_string = bprm->p; | |
3877 | bprm->p = copy_elf_strings(1, &bprm->filename, scratch, | |
3878 | bprm->p, info->stack_limit); | |
3879 | } | |
3880 | ||
59baae9a SB |
3881 | g_free(scratch); |
3882 | ||
e5fe0c52 | 3883 | if (!bprm->p) { |
bf858897 RH |
3884 | fprintf(stderr, "%s: %s\n", bprm->filename, strerror(E2BIG)); |
3885 | exit(-1); | |
379f6698 | 3886 | } |
379f6698 | 3887 | |
8e62a717 RH |
3888 | if (elf_interpreter) { |
3889 | load_elf_interp(elf_interpreter, &interp_info, bprm->buf); | |
31e31b8a | 3890 | |
1f356e8c HD |
3891 | /* |
3892 | * While unusual because of ELF_ET_DYN_BASE, if we are unlucky | |
3893 | * with the mappings the interpreter can be loaded above but | |
3894 | * near the main executable, which can leave very little room | |
3895 | * for the heap. | |
3896 | * If the current brk has less than 16MB, use the end of the | |
3897 | * interpreter. | |
3898 | */ | |
3899 | if (interp_info.brk > info->brk && | |
3900 | interp_info.load_bias - info->brk < 16 * MiB) { | |
3901 | info->brk = interp_info.brk; | |
3902 | } | |
3903 | ||
8e62a717 RH |
3904 | /* If the program interpreter is one of these two, then assume |
3905 | an iBCS2 image. Otherwise assume a native linux image. */ | |
3906 | ||
3907 | if (strcmp(elf_interpreter, "/usr/lib/libc.so.1") == 0 | |
3908 | || strcmp(elf_interpreter, "/usr/lib/ld.so.1") == 0) { | |
3909 | info->personality = PER_SVR4; | |
31e31b8a | 3910 | |
8e62a717 RH |
3911 | /* Why this, you ask??? Well SVr4 maps page 0 as read-only, |
3912 | and some applications "depend" upon this behavior. Since | |
3913 | we do not have the power to recompile these, we emulate | |
3914 | the SVr4 behavior. Sigh. */ | |
3915 | target_mmap(0, qemu_host_page_size, PROT_READ | PROT_EXEC, | |
68754b44 | 3916 | MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); |
8e62a717 | 3917 | } |
c94cb6c9 SM |
3918 | #ifdef TARGET_MIPS |
3919 | info->interp_fp_abi = interp_info.fp_abi; | |
3920 | #endif | |
31e31b8a FB |
3921 | } |
3922 | ||
db2af69d | 3923 | /* |
c40f621a RH |
3924 | * Load a vdso if available, which will amongst other things contain the |
3925 | * signal trampolines. Otherwise, allocate a separate page for them. | |
db2af69d | 3926 | */ |
c40f621a RH |
3927 | const VdsoImageInfo *vdso = vdso_image_info(); |
3928 | if (vdso) { | |
3929 | load_elf_vdso(&vdso_info, vdso); | |
5d94c2ff | 3930 | info->vdso = vdso_info.load_bias; |
c40f621a | 3931 | } else if (TARGET_ARCH_HAS_SIGTRAMP_PAGE) { |
802ae45e LV |
3932 | abi_long tramp_page = target_mmap(0, TARGET_PAGE_SIZE, |
3933 | PROT_READ | PROT_WRITE, | |
3934 | MAP_PRIVATE | MAP_ANON, -1, 0); | |
3935 | if (tramp_page == -1) { | |
3936 | return -errno; | |
3937 | } | |
3938 | ||
db2af69d RH |
3939 | setup_sigtramp(tramp_page); |
3940 | target_mprotect(tramp_page, TARGET_PAGE_SIZE, PROT_READ | PROT_EXEC); | |
3941 | } | |
3942 | ||
c40f621a RH |
3943 | bprm->p = create_elf_tables(bprm->p, bprm->argc, bprm->envc, &ehdr, info, |
3944 | elf_interpreter ? &interp_info : NULL, | |
3945 | vdso ? &vdso_info : NULL); | |
8e62a717 RH |
3946 | info->start_stack = bprm->p; |
3947 | ||
3948 | /* If we have an interpreter, set that as the program's entry point. | |
8e78064e | 3949 | Copy the load_bias as well, to help PPC64 interpret the entry |
8e62a717 RH |
3950 | point as a function descriptor. Do this after creating elf tables |
3951 | so that we copy the original program entry point into the AUXV. */ | |
3952 | if (elf_interpreter) { | |
8e78064e | 3953 | info->load_bias = interp_info.load_bias; |
8e62a717 | 3954 | info->entry = interp_info.entry; |
2b323087 | 3955 | g_free(elf_interpreter); |
8e62a717 | 3956 | } |
31e31b8a | 3957 | |
edf8e2af MW |
3958 | #ifdef USE_ELF_CORE_DUMP |
3959 | bprm->core_dump = &elf_core_dump; | |
3960 | #endif | |
3961 | ||
31e31b8a FB |
3962 | return 0; |
3963 | } | |
3964 | ||
edf8e2af | 3965 | #ifdef USE_ELF_CORE_DUMP |
edf8e2af MW |
3966 | /* |
3967 | * Definitions to generate Intel SVR4-like core files. | |
a2547a13 | 3968 | * These mostly have the same names as the SVR4 types with "target_elf_" |
edf8e2af MW |
3969 | * tacked on the front to prevent clashes with linux definitions, |
3970 | * and the typedef forms have been avoided. This is mostly like | |
3971 | * the SVR4 structure, but more Linuxy, with things that Linux does | |
3972 | * not support and which gdb doesn't really use excluded. | |
3973 | * | |
3974 | * Fields we don't dump (their contents is zero) in linux-user qemu | |
3975 | * are marked with XXX. | |
3976 | * | |
3977 | * Core dump code is copied from linux kernel (fs/binfmt_elf.c). | |
3978 | * | |
3979 | * Porting ELF coredump for target is (quite) simple process. First you | |
dd0a3651 | 3980 | * define USE_ELF_CORE_DUMP in target ELF code (where init_thread() for |
edf8e2af MW |
3981 | * the target resides): |
3982 | * | |
3983 | * #define USE_ELF_CORE_DUMP | |
3984 | * | |
3985 | * Next you define type of register set used for dumping. ELF specification | |
3986 | * says that it needs to be array of elf_greg_t that has size of ELF_NREG. | |
3987 | * | |
c227f099 | 3988 | * typedef <target_regtype> target_elf_greg_t; |
edf8e2af | 3989 | * #define ELF_NREG <number of registers> |
c227f099 | 3990 | * typedef taret_elf_greg_t target_elf_gregset_t[ELF_NREG]; |
edf8e2af | 3991 | * |
edf8e2af MW |
3992 | * Last step is to implement target specific function that copies registers |
3993 | * from given cpu into just specified register set. Prototype is: | |
3994 | * | |
c227f099 | 3995 | * static void elf_core_copy_regs(taret_elf_gregset_t *regs, |
9349b4f9 | 3996 | * const CPUArchState *env); |
edf8e2af MW |
3997 | * |
3998 | * Parameters: | |
3999 | * regs - copy register values into here (allocated and zeroed by caller) | |
4000 | * env - copy registers from here | |
4001 | * | |
4002 | * Example for ARM target is provided in this file. | |
4003 | */ | |
4004 | ||
4005 | /* An ELF note in memory */ | |
4006 | struct memelfnote { | |
4007 | const char *name; | |
4008 | size_t namesz; | |
4009 | size_t namesz_rounded; | |
4010 | int type; | |
4011 | size_t datasz; | |
80f5ce75 | 4012 | size_t datasz_rounded; |
edf8e2af MW |
4013 | void *data; |
4014 | size_t notesz; | |
4015 | }; | |
4016 | ||
a2547a13 | 4017 | struct target_elf_siginfo { |
f8fd4fc4 PB |
4018 | abi_int si_signo; /* signal number */ |
4019 | abi_int si_code; /* extra code */ | |
4020 | abi_int si_errno; /* errno */ | |
edf8e2af MW |
4021 | }; |
4022 | ||
a2547a13 LD |
4023 | struct target_elf_prstatus { |
4024 | struct target_elf_siginfo pr_info; /* Info associated with signal */ | |
1ddd592f | 4025 | abi_short pr_cursig; /* Current signal */ |
ca98ac83 PB |
4026 | abi_ulong pr_sigpend; /* XXX */ |
4027 | abi_ulong pr_sighold; /* XXX */ | |
c227f099 AL |
4028 | target_pid_t pr_pid; |
4029 | target_pid_t pr_ppid; | |
4030 | target_pid_t pr_pgrp; | |
4031 | target_pid_t pr_sid; | |
edf8e2af MW |
4032 | struct target_timeval pr_utime; /* XXX User time */ |
4033 | struct target_timeval pr_stime; /* XXX System time */ | |
4034 | struct target_timeval pr_cutime; /* XXX Cumulative user time */ | |
4035 | struct target_timeval pr_cstime; /* XXX Cumulative system time */ | |
c227f099 | 4036 | target_elf_gregset_t pr_reg; /* GP registers */ |
f8fd4fc4 | 4037 | abi_int pr_fpvalid; /* XXX */ |
edf8e2af MW |
4038 | }; |
4039 | ||
4040 | #define ELF_PRARGSZ (80) /* Number of chars for args */ | |
4041 | ||
a2547a13 | 4042 | struct target_elf_prpsinfo { |
edf8e2af MW |
4043 | char pr_state; /* numeric process state */ |
4044 | char pr_sname; /* char for pr_state */ | |
4045 | char pr_zomb; /* zombie */ | |
4046 | char pr_nice; /* nice val */ | |
ca98ac83 | 4047 | abi_ulong pr_flag; /* flags */ |
c227f099 AL |
4048 | target_uid_t pr_uid; |
4049 | target_gid_t pr_gid; | |
4050 | target_pid_t pr_pid, pr_ppid, pr_pgrp, pr_sid; | |
edf8e2af | 4051 | /* Lots missing */ |
d7eb2b92 | 4052 | char pr_fname[16] QEMU_NONSTRING; /* filename of executable */ |
edf8e2af MW |
4053 | char pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */ |
4054 | }; | |
4055 | ||
4056 | /* Here is the structure in which status of each thread is captured. */ | |
4057 | struct elf_thread_status { | |
72cf2d4f | 4058 | QTAILQ_ENTRY(elf_thread_status) ets_link; |
a2547a13 | 4059 | struct target_elf_prstatus prstatus; /* NT_PRSTATUS */ |
edf8e2af MW |
4060 | #if 0 |
4061 | elf_fpregset_t fpu; /* NT_PRFPREG */ | |
4062 | struct task_struct *thread; | |
4063 | elf_fpxregset_t xfpu; /* ELF_CORE_XFPREG_TYPE */ | |
4064 | #endif | |
4065 | struct memelfnote notes[1]; | |
4066 | int num_notes; | |
4067 | }; | |
4068 | ||
4069 | struct elf_note_info { | |
4070 | struct memelfnote *notes; | |
a2547a13 LD |
4071 | struct target_elf_prstatus *prstatus; /* NT_PRSTATUS */ |
4072 | struct target_elf_prpsinfo *psinfo; /* NT_PRPSINFO */ | |
edf8e2af | 4073 | |
b58deb34 | 4074 | QTAILQ_HEAD(, elf_thread_status) thread_list; |
edf8e2af MW |
4075 | #if 0 |
4076 | /* | |
4077 | * Current version of ELF coredump doesn't support | |
4078 | * dumping fp regs etc. | |
4079 | */ | |
4080 | elf_fpregset_t *fpu; | |
4081 | elf_fpxregset_t *xfpu; | |
4082 | int thread_status_size; | |
4083 | #endif | |
4084 | int notes_size; | |
4085 | int numnote; | |
4086 | }; | |
4087 | ||
4088 | struct vm_area_struct { | |
1a1c4db9 MI |
4089 | target_ulong vma_start; /* start vaddr of memory region */ |
4090 | target_ulong vma_end; /* end vaddr of memory region */ | |
4091 | abi_ulong vma_flags; /* protection etc. flags for the region */ | |
72cf2d4f | 4092 | QTAILQ_ENTRY(vm_area_struct) vma_link; |
edf8e2af MW |
4093 | }; |
4094 | ||
4095 | struct mm_struct { | |
72cf2d4f | 4096 | QTAILQ_HEAD(, vm_area_struct) mm_mmap; |
edf8e2af MW |
4097 | int mm_count; /* number of mappings */ |
4098 | }; | |
4099 | ||
4100 | static struct mm_struct *vma_init(void); | |
4101 | static void vma_delete(struct mm_struct *); | |
1a1c4db9 MI |
4102 | static int vma_add_mapping(struct mm_struct *, target_ulong, |
4103 | target_ulong, abi_ulong); | |
edf8e2af MW |
4104 | static int vma_get_mapping_count(const struct mm_struct *); |
4105 | static struct vm_area_struct *vma_first(const struct mm_struct *); | |
4106 | static struct vm_area_struct *vma_next(struct vm_area_struct *); | |
4107 | static abi_ulong vma_dump_size(const struct vm_area_struct *); | |
1a1c4db9 | 4108 | static int vma_walker(void *priv, target_ulong start, target_ulong end, |
d97ef72e | 4109 | unsigned long flags); |
edf8e2af MW |
4110 | |
4111 | static void fill_elf_header(struct elfhdr *, int, uint16_t, uint32_t); | |
4112 | static void fill_note(struct memelfnote *, const char *, int, | |
d97ef72e | 4113 | unsigned int, void *); |
a2547a13 LD |
4114 | static void fill_prstatus(struct target_elf_prstatus *, const TaskState *, int); |
4115 | static int fill_psinfo(struct target_elf_prpsinfo *, const TaskState *); | |
edf8e2af MW |
4116 | static void fill_auxv_note(struct memelfnote *, const TaskState *); |
4117 | static void fill_elf_note_phdr(struct elf_phdr *, int, off_t); | |
4118 | static size_t note_size(const struct memelfnote *); | |
4119 | static void free_note_info(struct elf_note_info *); | |
9349b4f9 AF |
4120 | static int fill_note_info(struct elf_note_info *, long, const CPUArchState *); |
4121 | static void fill_thread_info(struct elf_note_info *, const CPUArchState *); | |
edf8e2af MW |
4122 | |
4123 | static int dump_write(int, const void *, size_t); | |
4124 | static int write_note(struct memelfnote *, int); | |
4125 | static int write_note_info(struct elf_note_info *, int); | |
4126 | ||
4127 | #ifdef BSWAP_NEEDED | |
a2547a13 | 4128 | static void bswap_prstatus(struct target_elf_prstatus *prstatus) |
edf8e2af | 4129 | { |
ca98ac83 PB |
4130 | prstatus->pr_info.si_signo = tswap32(prstatus->pr_info.si_signo); |
4131 | prstatus->pr_info.si_code = tswap32(prstatus->pr_info.si_code); | |
4132 | prstatus->pr_info.si_errno = tswap32(prstatus->pr_info.si_errno); | |
edf8e2af | 4133 | prstatus->pr_cursig = tswap16(prstatus->pr_cursig); |
ca98ac83 PB |
4134 | prstatus->pr_sigpend = tswapal(prstatus->pr_sigpend); |
4135 | prstatus->pr_sighold = tswapal(prstatus->pr_sighold); | |
edf8e2af MW |
4136 | prstatus->pr_pid = tswap32(prstatus->pr_pid); |
4137 | prstatus->pr_ppid = tswap32(prstatus->pr_ppid); | |
4138 | prstatus->pr_pgrp = tswap32(prstatus->pr_pgrp); | |
4139 | prstatus->pr_sid = tswap32(prstatus->pr_sid); | |
4140 | /* cpu times are not filled, so we skip them */ | |
4141 | /* regs should be in correct format already */ | |
4142 | prstatus->pr_fpvalid = tswap32(prstatus->pr_fpvalid); | |
4143 | } | |
4144 | ||
a2547a13 | 4145 | static void bswap_psinfo(struct target_elf_prpsinfo *psinfo) |
edf8e2af | 4146 | { |
ca98ac83 | 4147 | psinfo->pr_flag = tswapal(psinfo->pr_flag); |
edf8e2af MW |
4148 | psinfo->pr_uid = tswap16(psinfo->pr_uid); |
4149 | psinfo->pr_gid = tswap16(psinfo->pr_gid); | |
4150 | psinfo->pr_pid = tswap32(psinfo->pr_pid); | |
4151 | psinfo->pr_ppid = tswap32(psinfo->pr_ppid); | |
4152 | psinfo->pr_pgrp = tswap32(psinfo->pr_pgrp); | |
4153 | psinfo->pr_sid = tswap32(psinfo->pr_sid); | |
4154 | } | |
991f8f0c RH |
4155 | |
4156 | static void bswap_note(struct elf_note *en) | |
4157 | { | |
4158 | bswap32s(&en->n_namesz); | |
4159 | bswap32s(&en->n_descsz); | |
4160 | bswap32s(&en->n_type); | |
4161 | } | |
4162 | #else | |
4163 | static inline void bswap_prstatus(struct target_elf_prstatus *p) { } | |
4164 | static inline void bswap_psinfo(struct target_elf_prpsinfo *p) {} | |
4165 | static inline void bswap_note(struct elf_note *en) { } | |
edf8e2af MW |
4166 | #endif /* BSWAP_NEEDED */ |
4167 | ||
4168 | /* | |
4169 | * Minimal support for linux memory regions. These are needed | |
4170 | * when we are finding out what memory exactly belongs to | |
4171 | * emulated process. No locks needed here, as long as | |
4172 | * thread that received the signal is stopped. | |
4173 | */ | |
4174 | ||
4175 | static struct mm_struct *vma_init(void) | |
4176 | { | |
4177 | struct mm_struct *mm; | |
4178 | ||
7267c094 | 4179 | if ((mm = g_malloc(sizeof (*mm))) == NULL) |
edf8e2af MW |
4180 | return (NULL); |
4181 | ||
4182 | mm->mm_count = 0; | |
72cf2d4f | 4183 | QTAILQ_INIT(&mm->mm_mmap); |
edf8e2af MW |
4184 | |
4185 | return (mm); | |
4186 | } | |
4187 | ||
4188 | static void vma_delete(struct mm_struct *mm) | |
4189 | { | |
4190 | struct vm_area_struct *vma; | |
4191 | ||
4192 | while ((vma = vma_first(mm)) != NULL) { | |
72cf2d4f | 4193 | QTAILQ_REMOVE(&mm->mm_mmap, vma, vma_link); |
7267c094 | 4194 | g_free(vma); |
edf8e2af | 4195 | } |
7267c094 | 4196 | g_free(mm); |
edf8e2af MW |
4197 | } |
4198 | ||
1a1c4db9 MI |
4199 | static int vma_add_mapping(struct mm_struct *mm, target_ulong start, |
4200 | target_ulong end, abi_ulong flags) | |
edf8e2af MW |
4201 | { |
4202 | struct vm_area_struct *vma; | |
4203 | ||
7267c094 | 4204 | if ((vma = g_malloc0(sizeof (*vma))) == NULL) |
edf8e2af MW |
4205 | return (-1); |
4206 | ||
4207 | vma->vma_start = start; | |
4208 | vma->vma_end = end; | |
4209 | vma->vma_flags = flags; | |
4210 | ||
72cf2d4f | 4211 | QTAILQ_INSERT_TAIL(&mm->mm_mmap, vma, vma_link); |
edf8e2af MW |
4212 | mm->mm_count++; |
4213 | ||
4214 | return (0); | |
4215 | } | |
4216 | ||
4217 | static struct vm_area_struct *vma_first(const struct mm_struct *mm) | |
4218 | { | |
72cf2d4f | 4219 | return (QTAILQ_FIRST(&mm->mm_mmap)); |
edf8e2af MW |
4220 | } |
4221 | ||
4222 | static struct vm_area_struct *vma_next(struct vm_area_struct *vma) | |
4223 | { | |
72cf2d4f | 4224 | return (QTAILQ_NEXT(vma, vma_link)); |
edf8e2af MW |
4225 | } |
4226 | ||
4227 | static int vma_get_mapping_count(const struct mm_struct *mm) | |
4228 | { | |
4229 | return (mm->mm_count); | |
4230 | } | |
4231 | ||
4232 | /* | |
4233 | * Calculate file (dump) size of given memory region. | |
4234 | */ | |
4235 | static abi_ulong vma_dump_size(const struct vm_area_struct *vma) | |
4236 | { | |
4237 | /* if we cannot even read the first page, skip it */ | |
c7169b02 | 4238 | if (!access_ok_untagged(VERIFY_READ, vma->vma_start, TARGET_PAGE_SIZE)) |
edf8e2af MW |
4239 | return (0); |
4240 | ||
4241 | /* | |
4242 | * Usually we don't dump executable pages as they contain | |
4243 | * non-writable code that debugger can read directly from | |
4244 | * target library etc. However, thread stacks are marked | |
4245 | * also executable so we read in first page of given region | |
4246 | * and check whether it contains elf header. If there is | |
4247 | * no elf header, we dump it. | |
4248 | */ | |
4249 | if (vma->vma_flags & PROT_EXEC) { | |
4250 | char page[TARGET_PAGE_SIZE]; | |
4251 | ||
022625a8 PM |
4252 | if (copy_from_user(page, vma->vma_start, sizeof (page))) { |
4253 | return 0; | |
4254 | } | |
edf8e2af MW |
4255 | if ((page[EI_MAG0] == ELFMAG0) && |
4256 | (page[EI_MAG1] == ELFMAG1) && | |
4257 | (page[EI_MAG2] == ELFMAG2) && | |
4258 | (page[EI_MAG3] == ELFMAG3)) { | |
4259 | /* | |
4260 | * Mappings are possibly from ELF binary. Don't dump | |
4261 | * them. | |
4262 | */ | |
4263 | return (0); | |
4264 | } | |
4265 | } | |
4266 | ||
4267 | return (vma->vma_end - vma->vma_start); | |
4268 | } | |
4269 | ||
1a1c4db9 | 4270 | static int vma_walker(void *priv, target_ulong start, target_ulong end, |
d97ef72e | 4271 | unsigned long flags) |
edf8e2af MW |
4272 | { |
4273 | struct mm_struct *mm = (struct mm_struct *)priv; | |
4274 | ||
edf8e2af MW |
4275 | vma_add_mapping(mm, start, end, flags); |
4276 | return (0); | |
4277 | } | |
4278 | ||
4279 | static void fill_note(struct memelfnote *note, const char *name, int type, | |
d97ef72e | 4280 | unsigned int sz, void *data) |
edf8e2af MW |
4281 | { |
4282 | unsigned int namesz; | |
4283 | ||
4284 | namesz = strlen(name) + 1; | |
4285 | note->name = name; | |
4286 | note->namesz = namesz; | |
4287 | note->namesz_rounded = roundup(namesz, sizeof (int32_t)); | |
4288 | note->type = type; | |
80f5ce75 LV |
4289 | note->datasz = sz; |
4290 | note->datasz_rounded = roundup(sz, sizeof (int32_t)); | |
4291 | ||
edf8e2af MW |
4292 | note->data = data; |
4293 | ||
4294 | /* | |
4295 | * We calculate rounded up note size here as specified by | |
4296 | * ELF document. | |
4297 | */ | |
4298 | note->notesz = sizeof (struct elf_note) + | |
80f5ce75 | 4299 | note->namesz_rounded + note->datasz_rounded; |
edf8e2af MW |
4300 | } |
4301 | ||
4302 | static void fill_elf_header(struct elfhdr *elf, int segs, uint16_t machine, | |
d97ef72e | 4303 | uint32_t flags) |
edf8e2af MW |
4304 | { |
4305 | (void) memset(elf, 0, sizeof(*elf)); | |
4306 | ||
4307 | (void) memcpy(elf->e_ident, ELFMAG, SELFMAG); | |
4308 | elf->e_ident[EI_CLASS] = ELF_CLASS; | |
4309 | elf->e_ident[EI_DATA] = ELF_DATA; | |
4310 | elf->e_ident[EI_VERSION] = EV_CURRENT; | |
4311 | elf->e_ident[EI_OSABI] = ELF_OSABI; | |
4312 | ||
4313 | elf->e_type = ET_CORE; | |
4314 | elf->e_machine = machine; | |
4315 | elf->e_version = EV_CURRENT; | |
4316 | elf->e_phoff = sizeof(struct elfhdr); | |
4317 | elf->e_flags = flags; | |
4318 | elf->e_ehsize = sizeof(struct elfhdr); | |
4319 | elf->e_phentsize = sizeof(struct elf_phdr); | |
4320 | elf->e_phnum = segs; | |
4321 | ||
edf8e2af | 4322 | bswap_ehdr(elf); |
edf8e2af MW |
4323 | } |
4324 | ||
4325 | static void fill_elf_note_phdr(struct elf_phdr *phdr, int sz, off_t offset) | |
4326 | { | |
4327 | phdr->p_type = PT_NOTE; | |
4328 | phdr->p_offset = offset; | |
4329 | phdr->p_vaddr = 0; | |
4330 | phdr->p_paddr = 0; | |
4331 | phdr->p_filesz = sz; | |
4332 | phdr->p_memsz = 0; | |
4333 | phdr->p_flags = 0; | |
4334 | phdr->p_align = 0; | |
4335 | ||
991f8f0c | 4336 | bswap_phdr(phdr, 1); |
edf8e2af MW |
4337 | } |
4338 | ||
4339 | static size_t note_size(const struct memelfnote *note) | |
4340 | { | |
4341 | return (note->notesz); | |
4342 | } | |
4343 | ||
a2547a13 | 4344 | static void fill_prstatus(struct target_elf_prstatus *prstatus, |
d97ef72e | 4345 | const TaskState *ts, int signr) |
edf8e2af MW |
4346 | { |
4347 | (void) memset(prstatus, 0, sizeof (*prstatus)); | |
4348 | prstatus->pr_info.si_signo = prstatus->pr_cursig = signr; | |
4349 | prstatus->pr_pid = ts->ts_tid; | |
4350 | prstatus->pr_ppid = getppid(); | |
4351 | prstatus->pr_pgrp = getpgrp(); | |
4352 | prstatus->pr_sid = getsid(0); | |
4353 | ||
edf8e2af | 4354 | bswap_prstatus(prstatus); |
edf8e2af MW |
4355 | } |
4356 | ||
a2547a13 | 4357 | static int fill_psinfo(struct target_elf_prpsinfo *psinfo, const TaskState *ts) |
edf8e2af | 4358 | { |
900cfbca | 4359 | char *base_filename; |
edf8e2af MW |
4360 | unsigned int i, len; |
4361 | ||
4362 | (void) memset(psinfo, 0, sizeof (*psinfo)); | |
4363 | ||
5f779a3a | 4364 | len = ts->info->env_strings - ts->info->arg_strings; |
edf8e2af MW |
4365 | if (len >= ELF_PRARGSZ) |
4366 | len = ELF_PRARGSZ - 1; | |
5f779a3a | 4367 | if (copy_from_user(&psinfo->pr_psargs, ts->info->arg_strings, len)) { |
edf8e2af | 4368 | return -EFAULT; |
5f779a3a | 4369 | } |
edf8e2af MW |
4370 | for (i = 0; i < len; i++) |
4371 | if (psinfo->pr_psargs[i] == 0) | |
4372 | psinfo->pr_psargs[i] = ' '; | |
4373 | psinfo->pr_psargs[len] = 0; | |
4374 | ||
4375 | psinfo->pr_pid = getpid(); | |
4376 | psinfo->pr_ppid = getppid(); | |
4377 | psinfo->pr_pgrp = getpgrp(); | |
4378 | psinfo->pr_sid = getsid(0); | |
4379 | psinfo->pr_uid = getuid(); | |
4380 | psinfo->pr_gid = getgid(); | |
4381 | ||
900cfbca JM |
4382 | base_filename = g_path_get_basename(ts->bprm->filename); |
4383 | /* | |
4384 | * Using strncpy here is fine: at max-length, | |
4385 | * this field is not NUL-terminated. | |
4386 | */ | |
edf8e2af | 4387 | (void) strncpy(psinfo->pr_fname, base_filename, |
d97ef72e | 4388 | sizeof(psinfo->pr_fname)); |
edf8e2af | 4389 | |
900cfbca | 4390 | g_free(base_filename); |
edf8e2af | 4391 | bswap_psinfo(psinfo); |
edf8e2af MW |
4392 | return (0); |
4393 | } | |
4394 | ||
4395 | static void fill_auxv_note(struct memelfnote *note, const TaskState *ts) | |
4396 | { | |
4397 | elf_addr_t auxv = (elf_addr_t)ts->info->saved_auxv; | |
4398 | elf_addr_t orig_auxv = auxv; | |
edf8e2af | 4399 | void *ptr; |
125b0f55 | 4400 | int len = ts->info->auxv_len; |
edf8e2af MW |
4401 | |
4402 | /* | |
4403 | * Auxiliary vector is stored in target process stack. It contains | |
4404 | * {type, value} pairs that we need to dump into note. This is not | |
4405 | * strictly necessary but we do it here for sake of completeness. | |
4406 | */ | |
4407 | ||
edf8e2af MW |
4408 | /* read in whole auxv vector and copy it to memelfnote */ |
4409 | ptr = lock_user(VERIFY_READ, orig_auxv, len, 0); | |
4410 | if (ptr != NULL) { | |
4411 | fill_note(note, "CORE", NT_AUXV, len, ptr); | |
4412 | unlock_user(ptr, auxv, len); | |
4413 | } | |
4414 | } | |
4415 | ||
4416 | /* | |
4417 | * Constructs name of coredump file. We have following convention | |
4418 | * for the name: | |
4419 | * qemu_<basename-of-target-binary>_<date>-<time>_<pid>.core | |
4420 | * | |
68af19ad | 4421 | * Returns the filename |
edf8e2af | 4422 | */ |
68af19ad | 4423 | static char *core_dump_filename(const TaskState *ts) |
edf8e2af | 4424 | { |
68af19ad DB |
4425 | g_autoptr(GDateTime) now = g_date_time_new_now_local(); |
4426 | g_autofree char *nowstr = g_date_time_format(now, "%Y%m%d-%H%M%S"); | |
4427 | g_autofree char *base_filename = g_path_get_basename(ts->bprm->filename); | |
edf8e2af | 4428 | |
68af19ad DB |
4429 | return g_strdup_printf("qemu_%s_%s_%d.core", |
4430 | base_filename, nowstr, (int)getpid()); | |
edf8e2af MW |
4431 | } |
4432 | ||
4433 | static int dump_write(int fd, const void *ptr, size_t size) | |
4434 | { | |
4435 | const char *bufp = (const char *)ptr; | |
4436 | ssize_t bytes_written, bytes_left; | |
4437 | struct rlimit dumpsize; | |
4438 | off_t pos; | |
4439 | ||
4440 | bytes_written = 0; | |
4441 | getrlimit(RLIMIT_CORE, &dumpsize); | |
4442 | if ((pos = lseek(fd, 0, SEEK_CUR))==-1) { | |
4443 | if (errno == ESPIPE) { /* not a seekable stream */ | |
4444 | bytes_left = size; | |
4445 | } else { | |
4446 | return pos; | |
4447 | } | |
4448 | } else { | |
4449 | if (dumpsize.rlim_cur <= pos) { | |
4450 | return -1; | |
4451 | } else if (dumpsize.rlim_cur == RLIM_INFINITY) { | |
4452 | bytes_left = size; | |
4453 | } else { | |
4454 | size_t limit_left=dumpsize.rlim_cur - pos; | |
4455 | bytes_left = limit_left >= size ? size : limit_left ; | |
4456 | } | |
4457 | } | |
4458 | ||
4459 | /* | |
4460 | * In normal conditions, single write(2) should do but | |
4461 | * in case of socket etc. this mechanism is more portable. | |
4462 | */ | |
4463 | do { | |
4464 | bytes_written = write(fd, bufp, bytes_left); | |
4465 | if (bytes_written < 0) { | |
4466 | if (errno == EINTR) | |
4467 | continue; | |
4468 | return (-1); | |
4469 | } else if (bytes_written == 0) { /* eof */ | |
4470 | return (-1); | |
4471 | } | |
4472 | bufp += bytes_written; | |
4473 | bytes_left -= bytes_written; | |
4474 | } while (bytes_left > 0); | |
4475 | ||
4476 | return (0); | |
4477 | } | |
4478 | ||
4479 | static int write_note(struct memelfnote *men, int fd) | |
4480 | { | |
4481 | struct elf_note en; | |
4482 | ||
4483 | en.n_namesz = men->namesz; | |
4484 | en.n_type = men->type; | |
4485 | en.n_descsz = men->datasz; | |
4486 | ||
edf8e2af | 4487 | bswap_note(&en); |
edf8e2af MW |
4488 | |
4489 | if (dump_write(fd, &en, sizeof(en)) != 0) | |
4490 | return (-1); | |
4491 | if (dump_write(fd, men->name, men->namesz_rounded) != 0) | |
4492 | return (-1); | |
80f5ce75 | 4493 | if (dump_write(fd, men->data, men->datasz_rounded) != 0) |
edf8e2af MW |
4494 | return (-1); |
4495 | ||
4496 | return (0); | |
4497 | } | |
4498 | ||
9349b4f9 | 4499 | static void fill_thread_info(struct elf_note_info *info, const CPUArchState *env) |
edf8e2af | 4500 | { |
29a0af61 | 4501 | CPUState *cpu = env_cpu((CPUArchState *)env); |
0429a971 | 4502 | TaskState *ts = (TaskState *)cpu->opaque; |
edf8e2af MW |
4503 | struct elf_thread_status *ets; |
4504 | ||
7267c094 | 4505 | ets = g_malloc0(sizeof (*ets)); |
edf8e2af MW |
4506 | ets->num_notes = 1; /* only prstatus is dumped */ |
4507 | fill_prstatus(&ets->prstatus, ts, 0); | |
4508 | elf_core_copy_regs(&ets->prstatus.pr_reg, env); | |
4509 | fill_note(&ets->notes[0], "CORE", NT_PRSTATUS, sizeof (ets->prstatus), | |
d97ef72e | 4510 | &ets->prstatus); |
edf8e2af | 4511 | |
72cf2d4f | 4512 | QTAILQ_INSERT_TAIL(&info->thread_list, ets, ets_link); |
edf8e2af MW |
4513 | |
4514 | info->notes_size += note_size(&ets->notes[0]); | |
4515 | } | |
4516 | ||
6afafa86 PM |
4517 | static void init_note_info(struct elf_note_info *info) |
4518 | { | |
4519 | /* Initialize the elf_note_info structure so that it is at | |
4520 | * least safe to call free_note_info() on it. Must be | |
4521 | * called before calling fill_note_info(). | |
4522 | */ | |
4523 | memset(info, 0, sizeof (*info)); | |
4524 | QTAILQ_INIT(&info->thread_list); | |
4525 | } | |
4526 | ||
edf8e2af | 4527 | static int fill_note_info(struct elf_note_info *info, |
9349b4f9 | 4528 | long signr, const CPUArchState *env) |
edf8e2af MW |
4529 | { |
4530 | #define NUMNOTES 3 | |
29a0af61 | 4531 | CPUState *cpu = env_cpu((CPUArchState *)env); |
0429a971 | 4532 | TaskState *ts = (TaskState *)cpu->opaque; |
edf8e2af MW |
4533 | int i; |
4534 | ||
c78d65e8 | 4535 | info->notes = g_new0(struct memelfnote, NUMNOTES); |
edf8e2af MW |
4536 | if (info->notes == NULL) |
4537 | return (-ENOMEM); | |
7267c094 | 4538 | info->prstatus = g_malloc0(sizeof (*info->prstatus)); |
edf8e2af MW |
4539 | if (info->prstatus == NULL) |
4540 | return (-ENOMEM); | |
7267c094 | 4541 | info->psinfo = g_malloc0(sizeof (*info->psinfo)); |
edf8e2af MW |
4542 | if (info->prstatus == NULL) |
4543 | return (-ENOMEM); | |
4544 | ||
4545 | /* | |
4546 | * First fill in status (and registers) of current thread | |
4547 | * including process info & aux vector. | |
4548 | */ | |
4549 | fill_prstatus(info->prstatus, ts, signr); | |
4550 | elf_core_copy_regs(&info->prstatus->pr_reg, env); | |
4551 | fill_note(&info->notes[0], "CORE", NT_PRSTATUS, | |
d97ef72e | 4552 | sizeof (*info->prstatus), info->prstatus); |
edf8e2af MW |
4553 | fill_psinfo(info->psinfo, ts); |
4554 | fill_note(&info->notes[1], "CORE", NT_PRPSINFO, | |
d97ef72e | 4555 | sizeof (*info->psinfo), info->psinfo); |
edf8e2af MW |
4556 | fill_auxv_note(&info->notes[2], ts); |
4557 | info->numnote = 3; | |
4558 | ||
4559 | info->notes_size = 0; | |
4560 | for (i = 0; i < info->numnote; i++) | |
4561 | info->notes_size += note_size(&info->notes[i]); | |
4562 | ||
4563 | /* read and fill status of all threads */ | |
370ed600 JI |
4564 | WITH_QEMU_LOCK_GUARD(&qemu_cpu_list_lock) { |
4565 | CPU_FOREACH(cpu) { | |
4566 | if (cpu == thread_cpu) { | |
4567 | continue; | |
4568 | } | |
b77af26e | 4569 | fill_thread_info(info, cpu_env(cpu)); |
182735ef | 4570 | } |
edf8e2af | 4571 | } |
edf8e2af MW |
4572 | |
4573 | return (0); | |
4574 | } | |
4575 | ||
4576 | static void free_note_info(struct elf_note_info *info) | |
4577 | { | |
4578 | struct elf_thread_status *ets; | |
4579 | ||
72cf2d4f BS |
4580 | while (!QTAILQ_EMPTY(&info->thread_list)) { |
4581 | ets = QTAILQ_FIRST(&info->thread_list); | |
4582 | QTAILQ_REMOVE(&info->thread_list, ets, ets_link); | |
7267c094 | 4583 | g_free(ets); |
edf8e2af MW |
4584 | } |
4585 | ||
7267c094 AL |
4586 | g_free(info->prstatus); |
4587 | g_free(info->psinfo); | |
4588 | g_free(info->notes); | |
edf8e2af MW |
4589 | } |
4590 | ||
4591 | static int write_note_info(struct elf_note_info *info, int fd) | |
4592 | { | |
4593 | struct elf_thread_status *ets; | |
4594 | int i, error = 0; | |
4595 | ||
4596 | /* write prstatus, psinfo and auxv for current thread */ | |
4597 | for (i = 0; i < info->numnote; i++) | |
4598 | if ((error = write_note(&info->notes[i], fd)) != 0) | |
4599 | return (error); | |
4600 | ||
4601 | /* write prstatus for each thread */ | |
52a53afe | 4602 | QTAILQ_FOREACH(ets, &info->thread_list, ets_link) { |
edf8e2af MW |
4603 | if ((error = write_note(&ets->notes[0], fd)) != 0) |
4604 | return (error); | |
4605 | } | |
4606 | ||
4607 | return (0); | |
4608 | } | |
4609 | ||
4610 | /* | |
4611 | * Write out ELF coredump. | |
4612 | * | |
4613 | * See documentation of ELF object file format in: | |
4614 | * http://www.caldera.com/developers/devspecs/gabi41.pdf | |
4615 | * | |
4616 | * Coredump format in linux is following: | |
4617 | * | |
4618 | * 0 +----------------------+ \ | |
4619 | * | ELF header | ET_CORE | | |
4620 | * +----------------------+ | | |
4621 | * | ELF program headers | |--- headers | |
4622 | * | - NOTE section | | | |
4623 | * | - PT_LOAD sections | | | |
4624 | * +----------------------+ / | |
4625 | * | NOTEs: | | |
4626 | * | - NT_PRSTATUS | | |
4627 | * | - NT_PRSINFO | | |
4628 | * | - NT_AUXV | | |
4629 | * +----------------------+ <-- aligned to target page | |
4630 | * | Process memory dump | | |
4631 | * : : | |
4632 | * . . | |
4633 | * : : | |
4634 | * | | | |
4635 | * +----------------------+ | |
4636 | * | |
4637 | * NT_PRSTATUS -> struct elf_prstatus (per thread) | |
4638 | * NT_PRSINFO -> struct elf_prpsinfo | |
4639 | * NT_AUXV is array of { type, value } pairs (see fill_auxv_note()). | |
4640 | * | |
4641 | * Format follows System V format as close as possible. Current | |
4642 | * version limitations are as follows: | |
4643 | * - no floating point registers are dumped | |
4644 | * | |
4645 | * Function returns 0 in case of success, negative errno otherwise. | |
4646 | * | |
4647 | * TODO: make this work also during runtime: it should be | |
4648 | * possible to force coredump from running process and then | |
4649 | * continue processing. For example qemu could set up SIGUSR2 | |
4650 | * handler (provided that target process haven't registered | |
4651 | * handler for that) that does the dump when signal is received. | |
4652 | */ | |
9349b4f9 | 4653 | static int elf_core_dump(int signr, const CPUArchState *env) |
edf8e2af | 4654 | { |
29a0af61 | 4655 | const CPUState *cpu = env_cpu((CPUArchState *)env); |
0429a971 | 4656 | const TaskState *ts = (const TaskState *)cpu->opaque; |
edf8e2af | 4657 | struct vm_area_struct *vma = NULL; |
68af19ad | 4658 | g_autofree char *corefile = NULL; |
edf8e2af MW |
4659 | struct elf_note_info info; |
4660 | struct elfhdr elf; | |
4661 | struct elf_phdr phdr; | |
4662 | struct rlimit dumpsize; | |
4663 | struct mm_struct *mm = NULL; | |
4664 | off_t offset = 0, data_offset = 0; | |
4665 | int segs = 0; | |
4666 | int fd = -1; | |
4667 | ||
6afafa86 PM |
4668 | init_note_info(&info); |
4669 | ||
edf8e2af | 4670 | errno = 0; |
0ea731db TW |
4671 | |
4672 | if (prctl(PR_GET_DUMPABLE) == 0) { | |
4673 | return 0; | |
4674 | } | |
4675 | ||
3805d428 | 4676 | if (getrlimit(RLIMIT_CORE, &dumpsize) == 0 && dumpsize.rlim_cur == 0) { |
d97ef72e | 4677 | return 0; |
3805d428 | 4678 | } |
edf8e2af | 4679 | |
68af19ad | 4680 | corefile = core_dump_filename(ts); |
edf8e2af MW |
4681 | |
4682 | if ((fd = open(corefile, O_WRONLY | O_CREAT, | |
d97ef72e | 4683 | S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH)) < 0) |
edf8e2af MW |
4684 | return (-errno); |
4685 | ||
4686 | /* | |
4687 | * Walk through target process memory mappings and | |
4688 | * set up structure containing this information. After | |
4689 | * this point vma_xxx functions can be used. | |
4690 | */ | |
4691 | if ((mm = vma_init()) == NULL) | |
4692 | goto out; | |
4693 | ||
4694 | walk_memory_regions(mm, vma_walker); | |
4695 | segs = vma_get_mapping_count(mm); | |
4696 | ||
4697 | /* | |
4698 | * Construct valid coredump ELF header. We also | |
4699 | * add one more segment for notes. | |
4700 | */ | |
4701 | fill_elf_header(&elf, segs + 1, ELF_MACHINE, 0); | |
4702 | if (dump_write(fd, &elf, sizeof (elf)) != 0) | |
4703 | goto out; | |
4704 | ||
b6af0975 | 4705 | /* fill in the in-memory version of notes */ |
edf8e2af MW |
4706 | if (fill_note_info(&info, signr, env) < 0) |
4707 | goto out; | |
4708 | ||
4709 | offset += sizeof (elf); /* elf header */ | |
4710 | offset += (segs + 1) * sizeof (struct elf_phdr); /* program headers */ | |
4711 | ||
4712 | /* write out notes program header */ | |
4713 | fill_elf_note_phdr(&phdr, info.notes_size, offset); | |
4714 | ||
4715 | offset += info.notes_size; | |
4716 | if (dump_write(fd, &phdr, sizeof (phdr)) != 0) | |
4717 | goto out; | |
4718 | ||
4719 | /* | |
4720 | * ELF specification wants data to start at page boundary so | |
4721 | * we align it here. | |
4722 | */ | |
80f5ce75 | 4723 | data_offset = offset = roundup(offset, ELF_EXEC_PAGESIZE); |
edf8e2af MW |
4724 | |
4725 | /* | |
4726 | * Write program headers for memory regions mapped in | |
4727 | * the target process. | |
4728 | */ | |
4729 | for (vma = vma_first(mm); vma != NULL; vma = vma_next(vma)) { | |
4730 | (void) memset(&phdr, 0, sizeof (phdr)); | |
4731 | ||
4732 | phdr.p_type = PT_LOAD; | |
4733 | phdr.p_offset = offset; | |
4734 | phdr.p_vaddr = vma->vma_start; | |
4735 | phdr.p_paddr = 0; | |
4736 | phdr.p_filesz = vma_dump_size(vma); | |
4737 | offset += phdr.p_filesz; | |
4738 | phdr.p_memsz = vma->vma_end - vma->vma_start; | |
4739 | phdr.p_flags = vma->vma_flags & PROT_READ ? PF_R : 0; | |
4740 | if (vma->vma_flags & PROT_WRITE) | |
4741 | phdr.p_flags |= PF_W; | |
4742 | if (vma->vma_flags & PROT_EXEC) | |
4743 | phdr.p_flags |= PF_X; | |
4744 | phdr.p_align = ELF_EXEC_PAGESIZE; | |
4745 | ||
80f5ce75 | 4746 | bswap_phdr(&phdr, 1); |
772034b6 PM |
4747 | if (dump_write(fd, &phdr, sizeof(phdr)) != 0) { |
4748 | goto out; | |
4749 | } | |
edf8e2af MW |
4750 | } |
4751 | ||
4752 | /* | |
4753 | * Next we write notes just after program headers. No | |
4754 | * alignment needed here. | |
4755 | */ | |
4756 | if (write_note_info(&info, fd) < 0) | |
4757 | goto out; | |
4758 | ||
4759 | /* align data to page boundary */ | |
edf8e2af MW |
4760 | if (lseek(fd, data_offset, SEEK_SET) != data_offset) |
4761 | goto out; | |
4762 | ||
4763 | /* | |
4764 | * Finally we can dump process memory into corefile as well. | |
4765 | */ | |
4766 | for (vma = vma_first(mm); vma != NULL; vma = vma_next(vma)) { | |
4767 | abi_ulong addr; | |
4768 | abi_ulong end; | |
4769 | ||
4770 | end = vma->vma_start + vma_dump_size(vma); | |
4771 | ||
4772 | for (addr = vma->vma_start; addr < end; | |
d97ef72e | 4773 | addr += TARGET_PAGE_SIZE) { |
edf8e2af MW |
4774 | char page[TARGET_PAGE_SIZE]; |
4775 | int error; | |
4776 | ||
4777 | /* | |
4778 | * Read in page from target process memory and | |
4779 | * write it to coredump file. | |
4780 | */ | |
4781 | error = copy_from_user(page, addr, sizeof (page)); | |
4782 | if (error != 0) { | |
49995e17 | 4783 | (void) fprintf(stderr, "unable to dump " TARGET_ABI_FMT_lx "\n", |
d97ef72e | 4784 | addr); |
edf8e2af MW |
4785 | errno = -error; |
4786 | goto out; | |
4787 | } | |
4788 | if (dump_write(fd, page, TARGET_PAGE_SIZE) < 0) | |
4789 | goto out; | |
4790 | } | |
4791 | } | |
4792 | ||
d97ef72e | 4793 | out: |
edf8e2af MW |
4794 | free_note_info(&info); |
4795 | if (mm != NULL) | |
4796 | vma_delete(mm); | |
4797 | (void) close(fd); | |
4798 | ||
4799 | if (errno != 0) | |
4800 | return (-errno); | |
4801 | return (0); | |
4802 | } | |
edf8e2af MW |
4803 | #endif /* USE_ELF_CORE_DUMP */ |
4804 | ||
e5fe0c52 PB |
4805 | void do_init_thread(struct target_pt_regs *regs, struct image_info *infop) |
4806 | { | |
4807 | init_thread(regs, infop); | |
4808 | } |