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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 BS |
8 | |
9 | #ifdef TARGET_ABI32 | |
10 | typedef uint32_t abi_ulong; | |
11 | typedef int32_t abi_long; | |
f3e3285d TS |
12 | #define TARGET_ABI_FMT_lx "%08x" |
13 | #define TARGET_ABI_FMT_ld "%d" | |
14 | #define TARGET_ABI_FMT_lu "%u" | |
992f48a0 BS |
15 | #define TARGET_ABI_BITS 32 |
16 | #else | |
17 | typedef target_ulong abi_ulong; | |
18 | typedef target_long abi_long; | |
f3e3285d TS |
19 | #define TARGET_ABI_FMT_lx TARGET_FMT_lx |
20 | #define TARGET_ABI_FMT_ld TARGET_FMT_ld | |
21 | #define TARGET_ABI_FMT_lu TARGET_FMT_lu | |
992f48a0 BS |
22 | #define TARGET_ABI_BITS TARGET_LONG_BITS |
23 | #endif | |
24 | ||
25 | #include "thunk.h" | |
26 | #include "syscall_defs.h" | |
6180a181 | 27 | #include "syscall.h" |
a04e134a | 28 | #include "target_signal.h" |
1fddef4b | 29 | #include "gdbstub.h" |
66fb9763 | 30 | |
31e31b8a FB |
31 | /* This struct is used to hold certain information about the image. |
32 | * Basically, it replicates in user space what would be certain | |
33 | * task_struct fields in the kernel | |
34 | */ | |
35 | struct image_info { | |
992f48a0 BS |
36 | abi_ulong load_addr; |
37 | abi_ulong start_code; | |
38 | abi_ulong end_code; | |
39 | abi_ulong start_data; | |
40 | abi_ulong end_data; | |
41 | abi_ulong start_brk; | |
42 | abi_ulong brk; | |
43 | abi_ulong start_mmap; | |
44 | abi_ulong mmap; | |
45 | abi_ulong rss; | |
46 | abi_ulong start_stack; | |
47 | abi_ulong entry; | |
48 | abi_ulong code_offset; | |
49 | abi_ulong data_offset; | |
38d0662a | 50 | char **host_argv; |
31e31b8a FB |
51 | int personality; |
52 | }; | |
53 | ||
b346ff46 | 54 | #ifdef TARGET_I386 |
851e67a1 FB |
55 | /* Information about the current linux thread */ |
56 | struct vm86_saved_state { | |
57 | uint32_t eax; /* return code */ | |
58 | uint32_t ebx; | |
59 | uint32_t ecx; | |
60 | uint32_t edx; | |
61 | uint32_t esi; | |
62 | uint32_t edi; | |
63 | uint32_t ebp; | |
64 | uint32_t esp; | |
65 | uint32_t eflags; | |
66 | uint32_t eip; | |
67 | uint16_t cs, ss, ds, es, fs, gs; | |
68 | }; | |
b346ff46 | 69 | #endif |
851e67a1 | 70 | |
28c4f361 FB |
71 | #ifdef TARGET_ARM |
72 | /* FPU emulator */ | |
73 | #include "nwfpe/fpa11.h" | |
28c4f361 FB |
74 | #endif |
75 | ||
851e67a1 FB |
76 | /* NOTE: we force a big alignment so that the stack stored after is |
77 | aligned too */ | |
78 | typedef struct TaskState { | |
79 | struct TaskState *next; | |
28c4f361 FB |
80 | #ifdef TARGET_ARM |
81 | /* FPA state */ | |
82 | FPA11 fpa; | |
a4f81979 | 83 | int swi_errno; |
28c4f361 | 84 | #endif |
84409ddb | 85 | #if defined(TARGET_I386) && !defined(TARGET_X86_64) |
992f48a0 | 86 | abi_ulong target_v86; |
851e67a1 | 87 | struct vm86_saved_state vm86_saved_regs; |
b333af06 | 88 | struct target_vm86plus_struct vm86plus; |
631271d7 FB |
89 | uint32_t v86flags; |
90 | uint32_t v86mask; | |
e6e5906b PB |
91 | #endif |
92 | #ifdef TARGET_M68K | |
93 | int sim_syscalls; | |
a87295e8 PB |
94 | #endif |
95 | #if defined(TARGET_ARM) || defined(TARGET_M68K) | |
96 | /* Extra fields for semihosted binaries. */ | |
97 | uint32_t stack_base; | |
98 | uint32_t heap_base; | |
99 | uint32_t heap_limit; | |
b346ff46 | 100 | #endif |
851e67a1 | 101 | int used; /* non zero if used */ |
978efd6a | 102 | struct image_info *info; |
851e67a1 FB |
103 | uint8_t stack[0]; |
104 | } __attribute__((aligned(16))) TaskState; | |
105 | ||
106 | extern TaskState *first_task_state; | |
c5937220 | 107 | extern const char *qemu_uname_release; |
851e67a1 | 108 | |
e5fe0c52 PB |
109 | /* ??? See if we can avoid exposing so much of the loader internals. */ |
110 | /* | |
111 | * MAX_ARG_PAGES defines the number of pages allocated for arguments | |
112 | * and envelope for the new program. 32 should suffice, this gives | |
113 | * a maximum env+arg of 128kB w/4KB pages! | |
114 | */ | |
115 | #define MAX_ARG_PAGES 32 | |
116 | ||
117 | /* | |
5fafdf24 | 118 | * This structure is used to hold the arguments that are |
e5fe0c52 PB |
119 | * used when loading binaries. |
120 | */ | |
121 | struct linux_binprm { | |
122 | char buf[128]; | |
123 | void *page[MAX_ARG_PAGES]; | |
992f48a0 | 124 | abi_ulong p; |
e5fe0c52 PB |
125 | int fd; |
126 | int e_uid, e_gid; | |
127 | int argc, envc; | |
128 | char **argv; | |
129 | char **envp; | |
130 | char * filename; /* Name of binary */ | |
131 | }; | |
132 | ||
133 | void do_init_thread(struct target_pt_regs *regs, struct image_info *infop); | |
992f48a0 BS |
134 | abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp, |
135 | abi_ulong stringp, int push_ptr); | |
5fafdf24 | 136 | int loader_exec(const char * filename, char ** argv, char ** envp, |
01ffc75b | 137 | struct target_pt_regs * regs, struct image_info *infop); |
31e31b8a | 138 | |
e5fe0c52 PB |
139 | int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs, |
140 | struct image_info * info); | |
141 | int load_flt_binary(struct linux_binprm * bprm, struct target_pt_regs * regs, | |
142 | struct image_info * info); | |
cb33da57 BS |
143 | #ifdef TARGET_HAS_ELFLOAD32 |
144 | int load_elf_binary_multi(struct linux_binprm *bprm, | |
145 | struct target_pt_regs *regs, | |
146 | struct image_info *info); | |
147 | #endif | |
e5fe0c52 | 148 | |
579a97f7 FB |
149 | abi_long memcpy_to_target(abi_ulong dest, const void *src, |
150 | unsigned long len); | |
992f48a0 BS |
151 | void target_set_brk(abi_ulong new_brk); |
152 | abi_long do_brk(abi_ulong new_brk); | |
31e31b8a | 153 | void syscall_init(void); |
992f48a0 BS |
154 | abi_long do_syscall(void *cpu_env, int num, abi_long arg1, |
155 | abi_long arg2, abi_long arg3, abi_long arg4, | |
156 | abi_long arg5, abi_long arg6); | |
31e31b8a | 157 | void gemu_log(const char *fmt, ...) __attribute__((format(printf,1,2))); |
b346ff46 FB |
158 | extern CPUState *global_env; |
159 | void cpu_loop(CPUState *env); | |
32ce6337 FB |
160 | void init_paths(const char *prefix); |
161 | const char *path(const char *pathname); | |
b92c47c1 | 162 | char *target_strerror(int err); |
6977fbfd FB |
163 | |
164 | extern int loglevel; | |
631271d7 FB |
165 | extern FILE *logfile; |
166 | ||
b92c47c1 TS |
167 | /* strace.c */ |
168 | void print_syscall(int num, | |
169 | target_long arg1, target_long arg2, target_long arg3, | |
170 | target_long arg4, target_long arg5, target_long arg6); | |
171 | void print_syscall_ret(int num, target_long arg1); | |
172 | extern int do_strace; | |
173 | ||
b346ff46 FB |
174 | /* signal.c */ |
175 | void process_pending_signals(void *cpu_env); | |
176 | void signal_init(void); | |
177 | int queue_signal(int sig, target_siginfo_t *info); | |
178 | void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info); | |
179 | void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo); | |
180 | long do_sigreturn(CPUState *env); | |
181 | long do_rt_sigreturn(CPUState *env); | |
579a97f7 | 182 | abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp); |
b346ff46 FB |
183 | |
184 | #ifdef TARGET_I386 | |
631271d7 FB |
185 | /* vm86.c */ |
186 | void save_v86_state(CPUX86State *env); | |
447db213 | 187 | void handle_vm86_trap(CPUX86State *env, int trapno); |
631271d7 | 188 | void handle_vm86_fault(CPUX86State *env); |
992f48a0 | 189 | int do_vm86(CPUX86State *env, long subfunction, abi_ulong v86_addr); |
5bfb56b2 BS |
190 | #elif defined(TARGET_SPARC64) |
191 | void sparc64_set_context(CPUSPARCState *env); | |
192 | void sparc64_get_context(CPUSPARCState *env); | |
b346ff46 | 193 | #endif |
631271d7 | 194 | |
54936004 | 195 | /* mmap.c */ |
992f48a0 BS |
196 | int target_mprotect(abi_ulong start, abi_ulong len, int prot); |
197 | abi_long target_mmap(abi_ulong start, abi_ulong len, int prot, | |
198 | int flags, int fd, abi_ulong offset); | |
199 | int target_munmap(abi_ulong start, abi_ulong len); | |
200 | abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size, | |
201 | abi_ulong new_size, unsigned long flags, | |
202 | abi_ulong new_addr); | |
203 | int target_msync(abi_ulong start, abi_ulong len, int flags); | |
54936004 | 204 | |
edf779ff FB |
205 | /* user access */ |
206 | ||
207 | #define VERIFY_READ 0 | |
579a97f7 | 208 | #define VERIFY_WRITE 1 /* implies read access */ |
edf779ff | 209 | |
3d97b40b TS |
210 | #define access_ok(type,addr,size) \ |
211 | (page_check_range((target_ulong)addr,size,(type==VERIFY_READ)?PAGE_READ:PAGE_WRITE)==0) | |
edf779ff | 212 | |
89343ecd | 213 | /* NOTE __get_user and __put_user use host pointers and don't check access. */ |
579a97f7 FB |
214 | /* These are usually used to access struct data members once the |
215 | * struct has been locked - usually with lock_user_struct(). | |
216 | */ | |
89343ecd | 217 | #define __put_user(x, hptr)\ |
edf779ff | 218 | ({\ |
89343ecd | 219 | int size = sizeof(*hptr);\ |
edf779ff FB |
220 | switch(size) {\ |
221 | case 1:\ | |
89343ecd | 222 | *(uint8_t *)(hptr) = (typeof(*hptr))(x);\ |
edf779ff FB |
223 | break;\ |
224 | case 2:\ | |
89343ecd | 225 | *(uint16_t *)(hptr) = tswap16((typeof(*hptr))(x));\ |
edf779ff FB |
226 | break;\ |
227 | case 4:\ | |
89343ecd | 228 | *(uint32_t *)(hptr) = tswap32((typeof(*hptr))(x));\ |
edf779ff FB |
229 | break;\ |
230 | case 8:\ | |
89343ecd | 231 | *(uint64_t *)(hptr) = tswap64((typeof(*hptr))(x));\ |
edf779ff FB |
232 | break;\ |
233 | default:\ | |
234 | abort();\ | |
235 | }\ | |
236 | 0;\ | |
237 | }) | |
238 | ||
89343ecd | 239 | #define __get_user(x, hptr) \ |
edf779ff | 240 | ({\ |
89343ecd | 241 | int size = sizeof(*hptr);\ |
edf779ff FB |
242 | switch(size) {\ |
243 | case 1:\ | |
89343ecd | 244 | x = (typeof(*hptr))*(uint8_t *)(hptr);\ |
edf779ff FB |
245 | break;\ |
246 | case 2:\ | |
89343ecd | 247 | x = (typeof(*hptr))tswap16(*(uint16_t *)(hptr));\ |
edf779ff FB |
248 | break;\ |
249 | case 4:\ | |
89343ecd | 250 | x = (typeof(*hptr))tswap32(*(uint32_t *)(hptr));\ |
edf779ff FB |
251 | break;\ |
252 | case 8:\ | |
89343ecd | 253 | x = (typeof(*hptr))tswap64(*(uint64_t *)(hptr));\ |
edf779ff FB |
254 | break;\ |
255 | default:\ | |
256 | abort();\ | |
257 | }\ | |
258 | 0;\ | |
259 | }) | |
260 | ||
579a97f7 FB |
261 | /* put_user()/get_user() take a guest address and check access */ |
262 | /* These are usually used to access an atomic data type, such as an int, | |
263 | * that has been passed by address. These internally perform locking | |
264 | * and unlocking on the data type. | |
265 | */ | |
266 | #define put_user(x, gaddr, target_type) \ | |
267 | ({ \ | |
268 | abi_ulong __gaddr = (gaddr); \ | |
269 | target_type *__hptr; \ | |
270 | abi_long __ret; \ | |
271 | if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \ | |
272 | __ret = __put_user((x), __hptr); \ | |
273 | unlock_user(__hptr, __gaddr, sizeof(target_type)); \ | |
274 | } else \ | |
275 | __ret = -TARGET_EFAULT; \ | |
276 | __ret; \ | |
edf779ff FB |
277 | }) |
278 | ||
579a97f7 FB |
279 | #define get_user(x, gaddr, target_type) \ |
280 | ({ \ | |
281 | abi_ulong __gaddr = (gaddr); \ | |
282 | target_type *__hptr; \ | |
283 | abi_long __ret; \ | |
284 | if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \ | |
285 | __ret = __get_user((x), __hptr); \ | |
286 | unlock_user(__hptr, __gaddr, 0); \ | |
287 | } else \ | |
288 | __ret = -TARGET_EFAULT; \ | |
289 | __ret; \ | |
edf779ff FB |
290 | }) |
291 | ||
579a97f7 FB |
292 | /* copy_from_user() and copy_to_user() are usually used to copy data |
293 | * buffers between the target and host. These internally perform | |
294 | * locking/unlocking of the memory. | |
295 | */ | |
296 | abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len); | |
297 | abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len); | |
298 | ||
53a5960a PB |
299 | /* Functions for accessing guest memory. The tget and tput functions |
300 | read/write single values, byteswapping as neccessary. The lock_user | |
301 | gets a pointer to a contiguous area of guest memory, but does not perform | |
302 | and byteswapping. lock_user may return either a pointer to the guest | |
303 | memory, or a temporary buffer. */ | |
304 | ||
305 | /* Lock an area of guest memory into the host. If copy is true then the | |
306 | host area will have the same contents as the guest. */ | |
579a97f7 | 307 | static inline void *lock_user(int type, abi_ulong guest_addr, long len, int copy) |
edf779ff | 308 | { |
579a97f7 FB |
309 | if (!access_ok(type, guest_addr, len)) |
310 | return NULL; | |
53a5960a | 311 | #ifdef DEBUG_REMAP |
579a97f7 FB |
312 | { |
313 | void *addr; | |
314 | addr = malloc(len); | |
315 | if (copy) | |
316 | memcpy(addr, g2h(guest_addr), len); | |
317 | else | |
318 | memset(addr, 0, len); | |
319 | return addr; | |
320 | } | |
53a5960a PB |
321 | #else |
322 | return g2h(guest_addr); | |
323 | #endif | |
edf779ff FB |
324 | } |
325 | ||
579a97f7 FB |
326 | /* Unlock an area of guest memory. The first LEN bytes must be |
327 | flushed back to guest memory. host_ptr = NULL is explicitely | |
328 | allowed and does nothing. */ | |
329 | static inline void unlock_user(void *host_ptr, abi_ulong guest_addr, | |
992f48a0 | 330 | long len) |
edf779ff | 331 | { |
579a97f7 | 332 | |
53a5960a | 333 | #ifdef DEBUG_REMAP |
579a97f7 FB |
334 | if (!host_ptr) |
335 | return; | |
336 | if (host_ptr == g2h(guest_addr)) | |
53a5960a PB |
337 | return; |
338 | if (len > 0) | |
579a97f7 FB |
339 | memcpy(g2h(guest_ptr), host_ptr, len); |
340 | free(host_ptr); | |
53a5960a | 341 | #endif |
edf779ff FB |
342 | } |
343 | ||
579a97f7 FB |
344 | /* Return the length of a string in target memory or -TARGET_EFAULT if |
345 | access error. */ | |
346 | abi_long target_strlen(abi_ulong gaddr); | |
53a5960a PB |
347 | |
348 | /* Like lock_user but for null terminated strings. */ | |
992f48a0 | 349 | static inline void *lock_user_string(abi_ulong guest_addr) |
53a5960a | 350 | { |
579a97f7 FB |
351 | abi_long len; |
352 | len = target_strlen(guest_addr); | |
353 | if (len < 0) | |
354 | return NULL; | |
355 | return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1); | |
edf779ff FB |
356 | } |
357 | ||
53a5960a | 358 | /* Helper macros for locking/ulocking a target struct. */ |
579a97f7 FB |
359 | #define lock_user_struct(type, host_ptr, guest_addr, copy) \ |
360 | (host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy)) | |
361 | #define unlock_user_struct(host_ptr, guest_addr, copy) \ | |
53a5960a PB |
362 | unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0) |
363 | ||
364 | #define tget8(addr) ldub(addr) | |
365 | #define tput8(addr, val) stb(addr, val) | |
366 | #define tget16(addr) lduw(addr) | |
367 | #define tput16(addr, val) stw(addr, val) | |
368 | #define tget32(addr) ldl(addr) | |
369 | #define tput32(addr, val) stl(addr, val) | |
370 | #define tget64(addr) ldq(addr) | |
371 | #define tput64(addr, val) stq(addr, val) | |
992f48a0 | 372 | #if TARGET_ABI_BITS == 64 |
53a5960a PB |
373 | #define tgetl(addr) ldq(addr) |
374 | #define tputl(addr, val) stq(addr, val) | |
375 | #else | |
376 | #define tgetl(addr) ldl(addr) | |
377 | #define tputl(addr, val) stl(addr, val) | |
378 | #endif | |
379 | ||
e88de099 | 380 | #endif /* QEMU_H */ |