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e88de099 FB |
1 | #ifndef QEMU_H |
2 | #define QEMU_H | |
31e31b8a | 3 | |
9de5e440 | 4 | #include <signal.h> |
edf779ff | 5 | #include <string.h> |
31e31b8a | 6 | |
6180a181 | 7 | #include "cpu.h" |
992f48a0 | 8 | |
06177d36 AZ |
9 | #undef DEBUG_REMAP |
10 | #ifdef DEBUG_REMAP | |
11 | #include <stdlib.h> | |
12 | #endif /* DEBUG_REMAP */ | |
13 | ||
1609cd44 | 14 | #include "qemu-types.h" |
992f48a0 BS |
15 | |
16 | #include "thunk.h" | |
17 | #include "syscall_defs.h" | |
6180a181 | 18 | #include "syscall.h" |
a04e134a | 19 | #include "target_signal.h" |
1fddef4b | 20 | #include "gdbstub.h" |
66fb9763 | 21 | |
d5975363 PB |
22 | #if defined(USE_NPTL) |
23 | #define THREAD __thread | |
24 | #else | |
25 | #define THREAD | |
26 | #endif | |
27 | ||
31e31b8a FB |
28 | /* This struct is used to hold certain information about the image. |
29 | * Basically, it replicates in user space what would be certain | |
30 | * task_struct fields in the kernel | |
31 | */ | |
32 | struct image_info { | |
992f48a0 BS |
33 | abi_ulong load_addr; |
34 | abi_ulong start_code; | |
35 | abi_ulong end_code; | |
36 | abi_ulong start_data; | |
37 | abi_ulong end_data; | |
38 | abi_ulong start_brk; | |
39 | abi_ulong brk; | |
40 | abi_ulong start_mmap; | |
41 | abi_ulong mmap; | |
42 | abi_ulong rss; | |
43 | abi_ulong start_stack; | |
44 | abi_ulong entry; | |
45 | abi_ulong code_offset; | |
46 | abi_ulong data_offset; | |
38d0662a | 47 | char **host_argv; |
31e31b8a FB |
48 | int personality; |
49 | }; | |
50 | ||
b346ff46 | 51 | #ifdef TARGET_I386 |
851e67a1 FB |
52 | /* Information about the current linux thread */ |
53 | struct vm86_saved_state { | |
54 | uint32_t eax; /* return code */ | |
55 | uint32_t ebx; | |
56 | uint32_t ecx; | |
57 | uint32_t edx; | |
58 | uint32_t esi; | |
59 | uint32_t edi; | |
60 | uint32_t ebp; | |
61 | uint32_t esp; | |
62 | uint32_t eflags; | |
63 | uint32_t eip; | |
64 | uint16_t cs, ss, ds, es, fs, gs; | |
65 | }; | |
b346ff46 | 66 | #endif |
851e67a1 | 67 | |
28c4f361 FB |
68 | #ifdef TARGET_ARM |
69 | /* FPU emulator */ | |
70 | #include "nwfpe/fpa11.h" | |
28c4f361 FB |
71 | #endif |
72 | ||
624f7979 PB |
73 | #define MAX_SIGQUEUE_SIZE 1024 |
74 | ||
75 | struct sigqueue { | |
76 | struct sigqueue *next; | |
77 | target_siginfo_t info; | |
78 | }; | |
79 | ||
80 | struct emulated_sigtable { | |
81 | int pending; /* true if signal is pending */ | |
82 | struct sigqueue *first; | |
83 | struct sigqueue info; /* in order to always have memory for the | |
84 | first signal, we put it here */ | |
85 | }; | |
86 | ||
851e67a1 FB |
87 | /* NOTE: we force a big alignment so that the stack stored after is |
88 | aligned too */ | |
89 | typedef struct TaskState { | |
90 | struct TaskState *next; | |
28c4f361 FB |
91 | #ifdef TARGET_ARM |
92 | /* FPA state */ | |
93 | FPA11 fpa; | |
a4f81979 | 94 | int swi_errno; |
28c4f361 | 95 | #endif |
84409ddb | 96 | #if defined(TARGET_I386) && !defined(TARGET_X86_64) |
992f48a0 | 97 | abi_ulong target_v86; |
851e67a1 | 98 | struct vm86_saved_state vm86_saved_regs; |
b333af06 | 99 | struct target_vm86plus_struct vm86plus; |
631271d7 FB |
100 | uint32_t v86flags; |
101 | uint32_t v86mask; | |
e6e5906b PB |
102 | #endif |
103 | #ifdef TARGET_M68K | |
104 | int sim_syscalls; | |
a87295e8 PB |
105 | #endif |
106 | #if defined(TARGET_ARM) || defined(TARGET_M68K) | |
107 | /* Extra fields for semihosted binaries. */ | |
108 | uint32_t stack_base; | |
109 | uint32_t heap_base; | |
110 | uint32_t heap_limit; | |
b346ff46 | 111 | #endif |
851e67a1 | 112 | int used; /* non zero if used */ |
978efd6a | 113 | struct image_info *info; |
624f7979 PB |
114 | |
115 | struct emulated_sigtable sigtab[TARGET_NSIG]; | |
116 | struct sigqueue sigqueue_table[MAX_SIGQUEUE_SIZE]; /* siginfo queue */ | |
117 | struct sigqueue *first_free; /* first free siginfo queue entry */ | |
118 | int signal_pending; /* non zero if a signal may be pending */ | |
119 | ||
851e67a1 FB |
120 | uint8_t stack[0]; |
121 | } __attribute__((aligned(16))) TaskState; | |
122 | ||
624f7979 | 123 | void init_task_state(TaskState *ts); |
c5937220 | 124 | extern const char *qemu_uname_release; |
851e67a1 | 125 | |
e5fe0c52 PB |
126 | /* ??? See if we can avoid exposing so much of the loader internals. */ |
127 | /* | |
128 | * MAX_ARG_PAGES defines the number of pages allocated for arguments | |
129 | * and envelope for the new program. 32 should suffice, this gives | |
130 | * a maximum env+arg of 128kB w/4KB pages! | |
131 | */ | |
132 | #define MAX_ARG_PAGES 32 | |
133 | ||
134 | /* | |
5fafdf24 | 135 | * This structure is used to hold the arguments that are |
e5fe0c52 PB |
136 | * used when loading binaries. |
137 | */ | |
138 | struct linux_binprm { | |
139 | char buf[128]; | |
140 | void *page[MAX_ARG_PAGES]; | |
992f48a0 | 141 | abi_ulong p; |
e5fe0c52 PB |
142 | int fd; |
143 | int e_uid, e_gid; | |
144 | int argc, envc; | |
145 | char **argv; | |
146 | char **envp; | |
147 | char * filename; /* Name of binary */ | |
148 | }; | |
149 | ||
150 | void do_init_thread(struct target_pt_regs *regs, struct image_info *infop); | |
992f48a0 BS |
151 | abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp, |
152 | abi_ulong stringp, int push_ptr); | |
5fafdf24 | 153 | int loader_exec(const char * filename, char ** argv, char ** envp, |
01ffc75b | 154 | struct target_pt_regs * regs, struct image_info *infop); |
31e31b8a | 155 | |
e5fe0c52 PB |
156 | int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs, |
157 | struct image_info * info); | |
158 | int load_flt_binary(struct linux_binprm * bprm, struct target_pt_regs * regs, | |
159 | struct image_info * info); | |
cb33da57 BS |
160 | #ifdef TARGET_HAS_ELFLOAD32 |
161 | int load_elf_binary_multi(struct linux_binprm *bprm, | |
162 | struct target_pt_regs *regs, | |
163 | struct image_info *info); | |
164 | #endif | |
e5fe0c52 | 165 | |
579a97f7 FB |
166 | abi_long memcpy_to_target(abi_ulong dest, const void *src, |
167 | unsigned long len); | |
992f48a0 BS |
168 | void target_set_brk(abi_ulong new_brk); |
169 | abi_long do_brk(abi_ulong new_brk); | |
31e31b8a | 170 | void syscall_init(void); |
992f48a0 BS |
171 | abi_long do_syscall(void *cpu_env, int num, abi_long arg1, |
172 | abi_long arg2, abi_long arg3, abi_long arg4, | |
173 | abi_long arg5, abi_long arg6); | |
31e31b8a | 174 | void gemu_log(const char *fmt, ...) __attribute__((format(printf,1,2))); |
d5975363 | 175 | extern THREAD CPUState *thread_env; |
b346ff46 | 176 | void cpu_loop(CPUState *env); |
32ce6337 FB |
177 | void init_paths(const char *prefix); |
178 | const char *path(const char *pathname); | |
b92c47c1 | 179 | char *target_strerror(int err); |
a745ec6d | 180 | int get_osversion(void); |
d5975363 PB |
181 | void fork_start(void); |
182 | void fork_end(int child); | |
6977fbfd | 183 | |
79383c9c | 184 | #include "qemu-log.h" |
631271d7 | 185 | |
b92c47c1 TS |
186 | /* strace.c */ |
187 | void print_syscall(int num, | |
c16f9ed3 FB |
188 | abi_long arg1, abi_long arg2, abi_long arg3, |
189 | abi_long arg4, abi_long arg5, abi_long arg6); | |
190 | void print_syscall_ret(int num, abi_long arg1); | |
b92c47c1 TS |
191 | extern int do_strace; |
192 | ||
b346ff46 | 193 | /* signal.c */ |
624f7979 | 194 | void process_pending_signals(CPUState *cpu_env); |
b346ff46 | 195 | void signal_init(void); |
624f7979 | 196 | int queue_signal(CPUState *env, int sig, target_siginfo_t *info); |
b346ff46 FB |
197 | void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info); |
198 | void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo); | |
4cb05961 | 199 | int target_to_host_signal(int sig); |
b346ff46 FB |
200 | long do_sigreturn(CPUState *env); |
201 | long do_rt_sigreturn(CPUState *env); | |
579a97f7 | 202 | abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp); |
b346ff46 FB |
203 | |
204 | #ifdef TARGET_I386 | |
631271d7 FB |
205 | /* vm86.c */ |
206 | void save_v86_state(CPUX86State *env); | |
447db213 | 207 | void handle_vm86_trap(CPUX86State *env, int trapno); |
631271d7 | 208 | void handle_vm86_fault(CPUX86State *env); |
992f48a0 | 209 | int do_vm86(CPUX86State *env, long subfunction, abi_ulong v86_addr); |
5bfb56b2 BS |
210 | #elif defined(TARGET_SPARC64) |
211 | void sparc64_set_context(CPUSPARCState *env); | |
212 | void sparc64_get_context(CPUSPARCState *env); | |
b346ff46 | 213 | #endif |
631271d7 | 214 | |
54936004 | 215 | /* mmap.c */ |
992f48a0 BS |
216 | int target_mprotect(abi_ulong start, abi_ulong len, int prot); |
217 | abi_long target_mmap(abi_ulong start, abi_ulong len, int prot, | |
218 | int flags, int fd, abi_ulong offset); | |
219 | int target_munmap(abi_ulong start, abi_ulong len); | |
220 | abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size, | |
221 | abi_ulong new_size, unsigned long flags, | |
222 | abi_ulong new_addr); | |
223 | int target_msync(abi_ulong start, abi_ulong len, int flags); | |
0776590d | 224 | extern unsigned long last_brk; |
c8a706fe PB |
225 | void mmap_lock(void); |
226 | void mmap_unlock(void); | |
d5975363 PB |
227 | #if defined(USE_NPTL) |
228 | void mmap_fork_start(void); | |
229 | void mmap_fork_end(int child); | |
230 | #endif | |
54936004 | 231 | |
440c7e85 BS |
232 | /* main.c */ |
233 | extern unsigned long x86_stack_size; | |
234 | ||
edf779ff FB |
235 | /* user access */ |
236 | ||
237 | #define VERIFY_READ 0 | |
579a97f7 | 238 | #define VERIFY_WRITE 1 /* implies read access */ |
edf779ff | 239 | |
dae3270c FB |
240 | static inline int access_ok(int type, abi_ulong addr, abi_ulong size) |
241 | { | |
242 | return page_check_range((target_ulong)addr, size, | |
243 | (type == VERIFY_READ) ? PAGE_READ : (PAGE_READ | PAGE_WRITE)) == 0; | |
244 | } | |
edf779ff | 245 | |
89343ecd | 246 | /* NOTE __get_user and __put_user use host pointers and don't check access. */ |
579a97f7 FB |
247 | /* These are usually used to access struct data members once the |
248 | * struct has been locked - usually with lock_user_struct(). | |
249 | */ | |
89343ecd | 250 | #define __put_user(x, hptr)\ |
edf779ff | 251 | ({\ |
89343ecd | 252 | int size = sizeof(*hptr);\ |
edf779ff FB |
253 | switch(size) {\ |
254 | case 1:\ | |
2f619698 | 255 | *(uint8_t *)(hptr) = (uint8_t)(typeof(*hptr))(x);\ |
edf779ff FB |
256 | break;\ |
257 | case 2:\ | |
89343ecd | 258 | *(uint16_t *)(hptr) = tswap16((typeof(*hptr))(x));\ |
edf779ff FB |
259 | break;\ |
260 | case 4:\ | |
89343ecd | 261 | *(uint32_t *)(hptr) = tswap32((typeof(*hptr))(x));\ |
edf779ff FB |
262 | break;\ |
263 | case 8:\ | |
89343ecd | 264 | *(uint64_t *)(hptr) = tswap64((typeof(*hptr))(x));\ |
edf779ff FB |
265 | break;\ |
266 | default:\ | |
267 | abort();\ | |
268 | }\ | |
269 | 0;\ | |
270 | }) | |
271 | ||
89343ecd | 272 | #define __get_user(x, hptr) \ |
edf779ff | 273 | ({\ |
89343ecd | 274 | int size = sizeof(*hptr);\ |
edf779ff FB |
275 | switch(size) {\ |
276 | case 1:\ | |
89343ecd | 277 | x = (typeof(*hptr))*(uint8_t *)(hptr);\ |
edf779ff FB |
278 | break;\ |
279 | case 2:\ | |
89343ecd | 280 | x = (typeof(*hptr))tswap16(*(uint16_t *)(hptr));\ |
edf779ff FB |
281 | break;\ |
282 | case 4:\ | |
89343ecd | 283 | x = (typeof(*hptr))tswap32(*(uint32_t *)(hptr));\ |
edf779ff FB |
284 | break;\ |
285 | case 8:\ | |
89343ecd | 286 | x = (typeof(*hptr))tswap64(*(uint64_t *)(hptr));\ |
edf779ff FB |
287 | break;\ |
288 | default:\ | |
2f619698 FB |
289 | /* avoid warning */\ |
290 | x = 0;\ | |
edf779ff FB |
291 | abort();\ |
292 | }\ | |
293 | 0;\ | |
294 | }) | |
295 | ||
579a97f7 FB |
296 | /* put_user()/get_user() take a guest address and check access */ |
297 | /* These are usually used to access an atomic data type, such as an int, | |
298 | * that has been passed by address. These internally perform locking | |
299 | * and unlocking on the data type. | |
300 | */ | |
301 | #define put_user(x, gaddr, target_type) \ | |
302 | ({ \ | |
303 | abi_ulong __gaddr = (gaddr); \ | |
304 | target_type *__hptr; \ | |
305 | abi_long __ret; \ | |
306 | if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \ | |
307 | __ret = __put_user((x), __hptr); \ | |
308 | unlock_user(__hptr, __gaddr, sizeof(target_type)); \ | |
309 | } else \ | |
310 | __ret = -TARGET_EFAULT; \ | |
311 | __ret; \ | |
edf779ff FB |
312 | }) |
313 | ||
579a97f7 FB |
314 | #define get_user(x, gaddr, target_type) \ |
315 | ({ \ | |
316 | abi_ulong __gaddr = (gaddr); \ | |
317 | target_type *__hptr; \ | |
318 | abi_long __ret; \ | |
319 | if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \ | |
320 | __ret = __get_user((x), __hptr); \ | |
321 | unlock_user(__hptr, __gaddr, 0); \ | |
2f619698 FB |
322 | } else { \ |
323 | /* avoid warning */ \ | |
324 | (x) = 0; \ | |
579a97f7 | 325 | __ret = -TARGET_EFAULT; \ |
2f619698 | 326 | } \ |
579a97f7 | 327 | __ret; \ |
edf779ff FB |
328 | }) |
329 | ||
2f619698 FB |
330 | #define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong) |
331 | #define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long) | |
332 | #define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t) | |
333 | #define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t) | |
334 | #define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t) | |
335 | #define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t) | |
336 | #define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t) | |
337 | #define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t) | |
338 | #define put_user_u8(x, gaddr) put_user((x), (gaddr), uint8_t) | |
339 | #define put_user_s8(x, gaddr) put_user((x), (gaddr), int8_t) | |
340 | ||
341 | #define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong) | |
342 | #define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long) | |
343 | #define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t) | |
344 | #define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t) | |
345 | #define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t) | |
346 | #define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t) | |
347 | #define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t) | |
348 | #define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t) | |
349 | #define get_user_u8(x, gaddr) get_user((x), (gaddr), uint8_t) | |
350 | #define get_user_s8(x, gaddr) get_user((x), (gaddr), int8_t) | |
351 | ||
579a97f7 FB |
352 | /* copy_from_user() and copy_to_user() are usually used to copy data |
353 | * buffers between the target and host. These internally perform | |
354 | * locking/unlocking of the memory. | |
355 | */ | |
356 | abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len); | |
357 | abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len); | |
358 | ||
53a5960a PB |
359 | /* Functions for accessing guest memory. The tget and tput functions |
360 | read/write single values, byteswapping as neccessary. The lock_user | |
361 | gets a pointer to a contiguous area of guest memory, but does not perform | |
362 | and byteswapping. lock_user may return either a pointer to the guest | |
363 | memory, or a temporary buffer. */ | |
364 | ||
365 | /* Lock an area of guest memory into the host. If copy is true then the | |
366 | host area will have the same contents as the guest. */ | |
579a97f7 | 367 | static inline void *lock_user(int type, abi_ulong guest_addr, long len, int copy) |
edf779ff | 368 | { |
579a97f7 FB |
369 | if (!access_ok(type, guest_addr, len)) |
370 | return NULL; | |
53a5960a | 371 | #ifdef DEBUG_REMAP |
579a97f7 FB |
372 | { |
373 | void *addr; | |
374 | addr = malloc(len); | |
375 | if (copy) | |
376 | memcpy(addr, g2h(guest_addr), len); | |
377 | else | |
378 | memset(addr, 0, len); | |
379 | return addr; | |
380 | } | |
53a5960a PB |
381 | #else |
382 | return g2h(guest_addr); | |
383 | #endif | |
edf779ff FB |
384 | } |
385 | ||
579a97f7 | 386 | /* Unlock an area of guest memory. The first LEN bytes must be |
1235fc06 | 387 | flushed back to guest memory. host_ptr = NULL is explicitly |
579a97f7 FB |
388 | allowed and does nothing. */ |
389 | static inline void unlock_user(void *host_ptr, abi_ulong guest_addr, | |
992f48a0 | 390 | long len) |
edf779ff | 391 | { |
579a97f7 | 392 | |
53a5960a | 393 | #ifdef DEBUG_REMAP |
579a97f7 FB |
394 | if (!host_ptr) |
395 | return; | |
396 | if (host_ptr == g2h(guest_addr)) | |
53a5960a PB |
397 | return; |
398 | if (len > 0) | |
06177d36 | 399 | memcpy(g2h(guest_addr), host_ptr, len); |
579a97f7 | 400 | free(host_ptr); |
53a5960a | 401 | #endif |
edf779ff FB |
402 | } |
403 | ||
579a97f7 FB |
404 | /* Return the length of a string in target memory or -TARGET_EFAULT if |
405 | access error. */ | |
406 | abi_long target_strlen(abi_ulong gaddr); | |
53a5960a PB |
407 | |
408 | /* Like lock_user but for null terminated strings. */ | |
992f48a0 | 409 | static inline void *lock_user_string(abi_ulong guest_addr) |
53a5960a | 410 | { |
579a97f7 FB |
411 | abi_long len; |
412 | len = target_strlen(guest_addr); | |
413 | if (len < 0) | |
414 | return NULL; | |
415 | return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1); | |
edf779ff FB |
416 | } |
417 | ||
53a5960a | 418 | /* Helper macros for locking/ulocking a target struct. */ |
579a97f7 FB |
419 | #define lock_user_struct(type, host_ptr, guest_addr, copy) \ |
420 | (host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy)) | |
421 | #define unlock_user_struct(host_ptr, guest_addr, copy) \ | |
53a5960a PB |
422 | unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0) |
423 | ||
c8a706fe PB |
424 | #if defined(USE_NPTL) |
425 | #include <pthread.h> | |
426 | #endif | |
427 | ||
e88de099 | 428 | #endif /* QEMU_H */ |