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Commit | Line | Data |
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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" |
72cf2d4f | 21 | #include "qemu-queue.h" |
66fb9763 | 22 | |
2f7bb878 | 23 | #if defined(CONFIG_USE_NPTL) |
d5975363 PB |
24 | #define THREAD __thread |
25 | #else | |
26 | #define THREAD | |
27 | #endif | |
28 | ||
31e31b8a FB |
29 | /* This struct is used to hold certain information about the image. |
30 | * Basically, it replicates in user space what would be certain | |
31 | * task_struct fields in the kernel | |
32 | */ | |
33 | struct image_info { | |
9955ffac | 34 | abi_ulong load_bias; |
992f48a0 BS |
35 | abi_ulong load_addr; |
36 | abi_ulong start_code; | |
37 | abi_ulong end_code; | |
38 | abi_ulong start_data; | |
39 | abi_ulong end_data; | |
40 | abi_ulong start_brk; | |
41 | abi_ulong brk; | |
42 | abi_ulong start_mmap; | |
43 | abi_ulong mmap; | |
44 | abi_ulong rss; | |
45 | abi_ulong start_stack; | |
97374d38 | 46 | abi_ulong stack_limit; |
992f48a0 BS |
47 | abi_ulong entry; |
48 | abi_ulong code_offset; | |
49 | abi_ulong data_offset; | |
edf8e2af MW |
50 | abi_ulong saved_auxv; |
51 | abi_ulong arg_start; | |
52 | abi_ulong arg_end; | |
31e31b8a FB |
53 | int personality; |
54 | }; | |
55 | ||
b346ff46 | 56 | #ifdef TARGET_I386 |
851e67a1 FB |
57 | /* Information about the current linux thread */ |
58 | struct vm86_saved_state { | |
59 | uint32_t eax; /* return code */ | |
60 | uint32_t ebx; | |
61 | uint32_t ecx; | |
62 | uint32_t edx; | |
63 | uint32_t esi; | |
64 | uint32_t edi; | |
65 | uint32_t ebp; | |
66 | uint32_t esp; | |
67 | uint32_t eflags; | |
68 | uint32_t eip; | |
69 | uint16_t cs, ss, ds, es, fs, gs; | |
70 | }; | |
b346ff46 | 71 | #endif |
851e67a1 | 72 | |
28c4f361 FB |
73 | #ifdef TARGET_ARM |
74 | /* FPU emulator */ | |
75 | #include "nwfpe/fpa11.h" | |
28c4f361 FB |
76 | #endif |
77 | ||
624f7979 PB |
78 | #define MAX_SIGQUEUE_SIZE 1024 |
79 | ||
80 | struct sigqueue { | |
81 | struct sigqueue *next; | |
c227f099 | 82 | target_siginfo_t info; |
624f7979 PB |
83 | }; |
84 | ||
85 | struct emulated_sigtable { | |
86 | int pending; /* true if signal is pending */ | |
87 | struct sigqueue *first; | |
88 | struct sigqueue info; /* in order to always have memory for the | |
89 | first signal, we put it here */ | |
90 | }; | |
91 | ||
851e67a1 FB |
92 | /* NOTE: we force a big alignment so that the stack stored after is |
93 | aligned too */ | |
94 | typedef struct TaskState { | |
edf8e2af | 95 | pid_t ts_tid; /* tid (or pid) of this task */ |
28c4f361 FB |
96 | #ifdef TARGET_ARM |
97 | /* FPA state */ | |
98 | FPA11 fpa; | |
a4f81979 | 99 | int swi_errno; |
28c4f361 | 100 | #endif |
84409ddb | 101 | #if defined(TARGET_I386) && !defined(TARGET_X86_64) |
992f48a0 | 102 | abi_ulong target_v86; |
851e67a1 | 103 | struct vm86_saved_state vm86_saved_regs; |
b333af06 | 104 | struct target_vm86plus_struct vm86plus; |
631271d7 FB |
105 | uint32_t v86flags; |
106 | uint32_t v86mask; | |
e6e5906b | 107 | #endif |
2f7bb878 | 108 | #ifdef CONFIG_USE_NPTL |
c2764719 PB |
109 | abi_ulong child_tidptr; |
110 | #endif | |
e6e5906b PB |
111 | #ifdef TARGET_M68K |
112 | int sim_syscalls; | |
a87295e8 PB |
113 | #endif |
114 | #if defined(TARGET_ARM) || defined(TARGET_M68K) | |
115 | /* Extra fields for semihosted binaries. */ | |
116 | uint32_t stack_base; | |
117 | uint32_t heap_base; | |
118 | uint32_t heap_limit; | |
b346ff46 | 119 | #endif |
851e67a1 | 120 | int used; /* non zero if used */ |
978efd6a | 121 | struct image_info *info; |
edf8e2af | 122 | struct linux_binprm *bprm; |
624f7979 PB |
123 | |
124 | struct emulated_sigtable sigtab[TARGET_NSIG]; | |
125 | struct sigqueue sigqueue_table[MAX_SIGQUEUE_SIZE]; /* siginfo queue */ | |
126 | struct sigqueue *first_free; /* first free siginfo queue entry */ | |
127 | int signal_pending; /* non zero if a signal may be pending */ | |
851e67a1 FB |
128 | } __attribute__((aligned(16))) TaskState; |
129 | ||
d088d664 | 130 | extern char *exec_path; |
624f7979 | 131 | void init_task_state(TaskState *ts); |
edf8e2af MW |
132 | void task_settid(TaskState *); |
133 | void stop_all_tasks(void); | |
c5937220 | 134 | extern const char *qemu_uname_release; |
379f6698 | 135 | extern unsigned long mmap_min_addr; |
851e67a1 | 136 | |
e5fe0c52 PB |
137 | /* ??? See if we can avoid exposing so much of the loader internals. */ |
138 | /* | |
139 | * MAX_ARG_PAGES defines the number of pages allocated for arguments | |
140 | * and envelope for the new program. 32 should suffice, this gives | |
141 | * a maximum env+arg of 128kB w/4KB pages! | |
142 | */ | |
fd4d81dd | 143 | #define MAX_ARG_PAGES 33 |
e5fe0c52 | 144 | |
9955ffac RH |
145 | /* Read a good amount of data initially, to hopefully get all the |
146 | program headers loaded. */ | |
147 | #define BPRM_BUF_SIZE 1024 | |
148 | ||
e5fe0c52 | 149 | /* |
5fafdf24 | 150 | * This structure is used to hold the arguments that are |
e5fe0c52 PB |
151 | * used when loading binaries. |
152 | */ | |
153 | struct linux_binprm { | |
9955ffac | 154 | char buf[BPRM_BUF_SIZE] __attribute__((aligned)); |
e5fe0c52 | 155 | void *page[MAX_ARG_PAGES]; |
992f48a0 | 156 | abi_ulong p; |
e5fe0c52 PB |
157 | int fd; |
158 | int e_uid, e_gid; | |
159 | int argc, envc; | |
160 | char **argv; | |
161 | char **envp; | |
162 | char * filename; /* Name of binary */ | |
edf8e2af | 163 | int (*core_dump)(int, const CPUState *); /* coredump routine */ |
e5fe0c52 PB |
164 | }; |
165 | ||
166 | void do_init_thread(struct target_pt_regs *regs, struct image_info *infop); | |
992f48a0 BS |
167 | abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp, |
168 | abi_ulong stringp, int push_ptr); | |
5fafdf24 | 169 | int loader_exec(const char * filename, char ** argv, char ** envp, |
edf8e2af MW |
170 | struct target_pt_regs * regs, struct image_info *infop, |
171 | struct linux_binprm *); | |
31e31b8a | 172 | |
e5fe0c52 PB |
173 | int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs, |
174 | struct image_info * info); | |
175 | int load_flt_binary(struct linux_binprm * bprm, struct target_pt_regs * regs, | |
176 | struct image_info * info); | |
177 | ||
579a97f7 FB |
178 | abi_long memcpy_to_target(abi_ulong dest, const void *src, |
179 | unsigned long len); | |
992f48a0 BS |
180 | void target_set_brk(abi_ulong new_brk); |
181 | abi_long do_brk(abi_ulong new_brk); | |
31e31b8a | 182 | void syscall_init(void); |
992f48a0 BS |
183 | abi_long do_syscall(void *cpu_env, int num, abi_long arg1, |
184 | abi_long arg2, abi_long arg3, abi_long arg4, | |
185 | abi_long arg5, abi_long arg6); | |
e5924d89 | 186 | void gemu_log(const char *fmt, ...) GCC_FMT_ATTR(1, 2); |
d5975363 | 187 | extern THREAD CPUState *thread_env; |
b346ff46 | 188 | void cpu_loop(CPUState *env); |
b92c47c1 | 189 | char *target_strerror(int err); |
a745ec6d | 190 | int get_osversion(void); |
d5975363 PB |
191 | void fork_start(void); |
192 | void fork_end(int child); | |
6977fbfd | 193 | |
79383c9c | 194 | #include "qemu-log.h" |
631271d7 | 195 | |
b92c47c1 TS |
196 | /* strace.c */ |
197 | void print_syscall(int num, | |
c16f9ed3 FB |
198 | abi_long arg1, abi_long arg2, abi_long arg3, |
199 | abi_long arg4, abi_long arg5, abi_long arg6); | |
200 | void print_syscall_ret(int num, abi_long arg1); | |
b92c47c1 TS |
201 | extern int do_strace; |
202 | ||
b346ff46 | 203 | /* signal.c */ |
624f7979 | 204 | void process_pending_signals(CPUState *cpu_env); |
b346ff46 | 205 | void signal_init(void); |
c227f099 AL |
206 | int queue_signal(CPUState *env, int sig, target_siginfo_t *info); |
207 | void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info); | |
208 | void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo); | |
4cb05961 | 209 | int target_to_host_signal(int sig); |
1d9d8b55 | 210 | int host_to_target_signal(int sig); |
b346ff46 FB |
211 | long do_sigreturn(CPUState *env); |
212 | long do_rt_sigreturn(CPUState *env); | |
579a97f7 | 213 | abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp); |
b346ff46 FB |
214 | |
215 | #ifdef TARGET_I386 | |
631271d7 FB |
216 | /* vm86.c */ |
217 | void save_v86_state(CPUX86State *env); | |
447db213 | 218 | void handle_vm86_trap(CPUX86State *env, int trapno); |
631271d7 | 219 | void handle_vm86_fault(CPUX86State *env); |
992f48a0 | 220 | int do_vm86(CPUX86State *env, long subfunction, abi_ulong v86_addr); |
5bfb56b2 BS |
221 | #elif defined(TARGET_SPARC64) |
222 | void sparc64_set_context(CPUSPARCState *env); | |
223 | void sparc64_get_context(CPUSPARCState *env); | |
b346ff46 | 224 | #endif |
631271d7 | 225 | |
54936004 | 226 | /* mmap.c */ |
992f48a0 BS |
227 | int target_mprotect(abi_ulong start, abi_ulong len, int prot); |
228 | abi_long target_mmap(abi_ulong start, abi_ulong len, int prot, | |
229 | int flags, int fd, abi_ulong offset); | |
230 | int target_munmap(abi_ulong start, abi_ulong len); | |
231 | abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size, | |
232 | abi_ulong new_size, unsigned long flags, | |
233 | abi_ulong new_addr); | |
234 | int target_msync(abi_ulong start, abi_ulong len, int flags); | |
0776590d | 235 | extern unsigned long last_brk; |
c8a706fe PB |
236 | void mmap_lock(void); |
237 | void mmap_unlock(void); | |
9ad197d9 | 238 | abi_ulong mmap_find_vma(abi_ulong, abi_ulong); |
c2764719 PB |
239 | void cpu_list_lock(void); |
240 | void cpu_list_unlock(void); | |
2f7bb878 | 241 | #if defined(CONFIG_USE_NPTL) |
d5975363 PB |
242 | void mmap_fork_start(void); |
243 | void mmap_fork_end(int child); | |
244 | #endif | |
54936004 | 245 | |
440c7e85 | 246 | /* main.c */ |
703e0e89 | 247 | extern unsigned long guest_stack_size; |
440c7e85 | 248 | |
edf779ff FB |
249 | /* user access */ |
250 | ||
251 | #define VERIFY_READ 0 | |
579a97f7 | 252 | #define VERIFY_WRITE 1 /* implies read access */ |
edf779ff | 253 | |
dae3270c FB |
254 | static inline int access_ok(int type, abi_ulong addr, abi_ulong size) |
255 | { | |
256 | return page_check_range((target_ulong)addr, size, | |
257 | (type == VERIFY_READ) ? PAGE_READ : (PAGE_READ | PAGE_WRITE)) == 0; | |
258 | } | |
edf779ff | 259 | |
89343ecd | 260 | /* NOTE __get_user and __put_user use host pointers and don't check access. */ |
579a97f7 FB |
261 | /* These are usually used to access struct data members once the |
262 | * struct has been locked - usually with lock_user_struct(). | |
263 | */ | |
89343ecd | 264 | #define __put_user(x, hptr)\ |
edf779ff | 265 | ({\ |
bee70008 | 266 | switch(sizeof(*hptr)) {\ |
edf779ff | 267 | case 1:\ |
2f619698 | 268 | *(uint8_t *)(hptr) = (uint8_t)(typeof(*hptr))(x);\ |
edf779ff FB |
269 | break;\ |
270 | case 2:\ | |
425be425 | 271 | *(uint16_t *)(hptr) = tswap16((uint16_t)(typeof(*hptr))(x));\ |
edf779ff FB |
272 | break;\ |
273 | case 4:\ | |
425be425 | 274 | *(uint32_t *)(hptr) = tswap32((uint32_t)(typeof(*hptr))(x));\ |
edf779ff FB |
275 | break;\ |
276 | case 8:\ | |
89343ecd | 277 | *(uint64_t *)(hptr) = tswap64((typeof(*hptr))(x));\ |
edf779ff FB |
278 | break;\ |
279 | default:\ | |
280 | abort();\ | |
281 | }\ | |
282 | 0;\ | |
283 | }) | |
284 | ||
89343ecd | 285 | #define __get_user(x, hptr) \ |
edf779ff | 286 | ({\ |
bee70008 | 287 | switch(sizeof(*hptr)) {\ |
edf779ff | 288 | case 1:\ |
89343ecd | 289 | x = (typeof(*hptr))*(uint8_t *)(hptr);\ |
edf779ff FB |
290 | break;\ |
291 | case 2:\ | |
89343ecd | 292 | x = (typeof(*hptr))tswap16(*(uint16_t *)(hptr));\ |
edf779ff FB |
293 | break;\ |
294 | case 4:\ | |
89343ecd | 295 | x = (typeof(*hptr))tswap32(*(uint32_t *)(hptr));\ |
edf779ff FB |
296 | break;\ |
297 | case 8:\ | |
89343ecd | 298 | x = (typeof(*hptr))tswap64(*(uint64_t *)(hptr));\ |
edf779ff FB |
299 | break;\ |
300 | default:\ | |
2f619698 FB |
301 | /* avoid warning */\ |
302 | x = 0;\ | |
edf779ff FB |
303 | abort();\ |
304 | }\ | |
305 | 0;\ | |
306 | }) | |
307 | ||
579a97f7 FB |
308 | /* put_user()/get_user() take a guest address and check access */ |
309 | /* These are usually used to access an atomic data type, such as an int, | |
310 | * that has been passed by address. These internally perform locking | |
311 | * and unlocking on the data type. | |
312 | */ | |
313 | #define put_user(x, gaddr, target_type) \ | |
314 | ({ \ | |
315 | abi_ulong __gaddr = (gaddr); \ | |
316 | target_type *__hptr; \ | |
317 | abi_long __ret; \ | |
318 | if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \ | |
319 | __ret = __put_user((x), __hptr); \ | |
320 | unlock_user(__hptr, __gaddr, sizeof(target_type)); \ | |
321 | } else \ | |
322 | __ret = -TARGET_EFAULT; \ | |
323 | __ret; \ | |
edf779ff FB |
324 | }) |
325 | ||
579a97f7 FB |
326 | #define get_user(x, gaddr, target_type) \ |
327 | ({ \ | |
328 | abi_ulong __gaddr = (gaddr); \ | |
329 | target_type *__hptr; \ | |
330 | abi_long __ret; \ | |
331 | if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \ | |
332 | __ret = __get_user((x), __hptr); \ | |
333 | unlock_user(__hptr, __gaddr, 0); \ | |
2f619698 FB |
334 | } else { \ |
335 | /* avoid warning */ \ | |
336 | (x) = 0; \ | |
579a97f7 | 337 | __ret = -TARGET_EFAULT; \ |
2f619698 | 338 | } \ |
579a97f7 | 339 | __ret; \ |
edf779ff FB |
340 | }) |
341 | ||
2f619698 FB |
342 | #define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong) |
343 | #define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long) | |
344 | #define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t) | |
345 | #define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t) | |
346 | #define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t) | |
347 | #define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t) | |
348 | #define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t) | |
349 | #define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t) | |
350 | #define put_user_u8(x, gaddr) put_user((x), (gaddr), uint8_t) | |
351 | #define put_user_s8(x, gaddr) put_user((x), (gaddr), int8_t) | |
352 | ||
353 | #define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong) | |
354 | #define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long) | |
355 | #define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t) | |
356 | #define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t) | |
357 | #define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t) | |
358 | #define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t) | |
359 | #define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t) | |
360 | #define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t) | |
361 | #define get_user_u8(x, gaddr) get_user((x), (gaddr), uint8_t) | |
362 | #define get_user_s8(x, gaddr) get_user((x), (gaddr), int8_t) | |
363 | ||
579a97f7 FB |
364 | /* copy_from_user() and copy_to_user() are usually used to copy data |
365 | * buffers between the target and host. These internally perform | |
366 | * locking/unlocking of the memory. | |
367 | */ | |
368 | abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len); | |
369 | abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len); | |
370 | ||
53a5960a PB |
371 | /* Functions for accessing guest memory. The tget and tput functions |
372 | read/write single values, byteswapping as neccessary. The lock_user | |
373 | gets a pointer to a contiguous area of guest memory, but does not perform | |
374 | and byteswapping. lock_user may return either a pointer to the guest | |
375 | memory, or a temporary buffer. */ | |
376 | ||
377 | /* Lock an area of guest memory into the host. If copy is true then the | |
378 | host area will have the same contents as the guest. */ | |
579a97f7 | 379 | static inline void *lock_user(int type, abi_ulong guest_addr, long len, int copy) |
edf779ff | 380 | { |
579a97f7 FB |
381 | if (!access_ok(type, guest_addr, len)) |
382 | return NULL; | |
53a5960a | 383 | #ifdef DEBUG_REMAP |
579a97f7 FB |
384 | { |
385 | void *addr; | |
386 | addr = malloc(len); | |
387 | if (copy) | |
388 | memcpy(addr, g2h(guest_addr), len); | |
389 | else | |
390 | memset(addr, 0, len); | |
391 | return addr; | |
392 | } | |
53a5960a PB |
393 | #else |
394 | return g2h(guest_addr); | |
395 | #endif | |
edf779ff FB |
396 | } |
397 | ||
579a97f7 | 398 | /* Unlock an area of guest memory. The first LEN bytes must be |
1235fc06 | 399 | flushed back to guest memory. host_ptr = NULL is explicitly |
579a97f7 FB |
400 | allowed and does nothing. */ |
401 | static inline void unlock_user(void *host_ptr, abi_ulong guest_addr, | |
992f48a0 | 402 | long len) |
edf779ff | 403 | { |
579a97f7 | 404 | |
53a5960a | 405 | #ifdef DEBUG_REMAP |
579a97f7 FB |
406 | if (!host_ptr) |
407 | return; | |
408 | if (host_ptr == g2h(guest_addr)) | |
53a5960a PB |
409 | return; |
410 | if (len > 0) | |
06177d36 | 411 | memcpy(g2h(guest_addr), host_ptr, len); |
579a97f7 | 412 | free(host_ptr); |
53a5960a | 413 | #endif |
edf779ff FB |
414 | } |
415 | ||
579a97f7 FB |
416 | /* Return the length of a string in target memory or -TARGET_EFAULT if |
417 | access error. */ | |
418 | abi_long target_strlen(abi_ulong gaddr); | |
53a5960a PB |
419 | |
420 | /* Like lock_user but for null terminated strings. */ | |
992f48a0 | 421 | static inline void *lock_user_string(abi_ulong guest_addr) |
53a5960a | 422 | { |
579a97f7 FB |
423 | abi_long len; |
424 | len = target_strlen(guest_addr); | |
425 | if (len < 0) | |
426 | return NULL; | |
427 | return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1); | |
edf779ff FB |
428 | } |
429 | ||
53a5960a | 430 | /* Helper macros for locking/ulocking a target struct. */ |
579a97f7 FB |
431 | #define lock_user_struct(type, host_ptr, guest_addr, copy) \ |
432 | (host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy)) | |
433 | #define unlock_user_struct(host_ptr, guest_addr, copy) \ | |
53a5960a PB |
434 | unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0) |
435 | ||
2f7bb878 | 436 | #if defined(CONFIG_USE_NPTL) |
c8a706fe PB |
437 | #include <pthread.h> |
438 | #endif | |
439 | ||
e88de099 | 440 | #endif /* QEMU_H */ |