fix event fallout in grlib_apbuart.c
[qemu/aliguori.git] / linux-user / qemu.h
blob627c8b34231245cc8579c8489e7077019817f63c
1 #ifndef QEMU_H
2 #define QEMU_H
4 #include <signal.h>
5 #include <string.h>
7 #include "cpu.h"
9 #undef DEBUG_REMAP
10 #ifdef DEBUG_REMAP
11 #include <stdlib.h>
12 #endif /* DEBUG_REMAP */
14 #include "qemu-types.h"
16 #include "thunk.h"
17 #include "syscall_defs.h"
18 #include "syscall.h"
19 #include "target_signal.h"
20 #include "gdbstub.h"
21 #include "qemu-queue.h"
23 #if defined(CONFIG_USE_NPTL)
24 #define THREAD __thread
25 #else
26 #define THREAD
27 #endif
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
33 struct image_info {
34 abi_ulong load_bias;
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;
46 abi_ulong stack_limit;
47 abi_ulong entry;
48 abi_ulong code_offset;
49 abi_ulong data_offset;
50 abi_ulong saved_auxv;
51 abi_ulong arg_start;
52 abi_ulong arg_end;
53 int personality;
54 #ifdef CONFIG_USE_FDPIC
55 abi_ulong loadmap_addr;
56 uint16_t nsegs;
57 void *loadsegs;
58 abi_ulong pt_dynamic_addr;
59 struct image_info *other_info;
60 #endif
63 #ifdef TARGET_I386
64 /* Information about the current linux thread */
65 struct vm86_saved_state {
66 uint32_t eax; /* return code */
67 uint32_t ebx;
68 uint32_t ecx;
69 uint32_t edx;
70 uint32_t esi;
71 uint32_t edi;
72 uint32_t ebp;
73 uint32_t esp;
74 uint32_t eflags;
75 uint32_t eip;
76 uint16_t cs, ss, ds, es, fs, gs;
78 #endif
80 #ifdef TARGET_ARM
81 /* FPU emulator */
82 #include "nwfpe/fpa11.h"
83 #endif
85 #define MAX_SIGQUEUE_SIZE 1024
87 struct sigqueue {
88 struct sigqueue *next;
89 target_siginfo_t info;
92 struct emulated_sigtable {
93 int pending; /* true if signal is pending */
94 struct sigqueue *first;
95 struct sigqueue info; /* in order to always have memory for the
96 first signal, we put it here */
99 /* NOTE: we force a big alignment so that the stack stored after is
100 aligned too */
101 typedef struct TaskState {
102 pid_t ts_tid; /* tid (or pid) of this task */
103 #ifdef TARGET_ARM
104 /* FPA state */
105 FPA11 fpa;
106 int swi_errno;
107 #endif
108 #ifdef TARGET_UNICORE32
109 int swi_errno;
110 #endif
111 #if defined(TARGET_I386) && !defined(TARGET_X86_64)
112 abi_ulong target_v86;
113 struct vm86_saved_state vm86_saved_regs;
114 struct target_vm86plus_struct vm86plus;
115 uint32_t v86flags;
116 uint32_t v86mask;
117 #endif
118 #ifdef CONFIG_USE_NPTL
119 abi_ulong child_tidptr;
120 #endif
121 #ifdef TARGET_M68K
122 int sim_syscalls;
123 #endif
124 #if defined(TARGET_ARM) || defined(TARGET_M68K) || defined(TARGET_UNICORE32)
125 /* Extra fields for semihosted binaries. */
126 uint32_t stack_base;
127 uint32_t heap_base;
128 uint32_t heap_limit;
129 #endif
130 int used; /* non zero if used */
131 struct image_info *info;
132 struct linux_binprm *bprm;
134 struct emulated_sigtable sigtab[TARGET_NSIG];
135 struct sigqueue sigqueue_table[MAX_SIGQUEUE_SIZE]; /* siginfo queue */
136 struct sigqueue *first_free; /* first free siginfo queue entry */
137 int signal_pending; /* non zero if a signal may be pending */
138 } __attribute__((aligned(16))) TaskState;
140 extern char *exec_path;
141 void init_task_state(TaskState *ts);
142 void task_settid(TaskState *);
143 void stop_all_tasks(void);
144 extern const char *qemu_uname_release;
145 extern unsigned long mmap_min_addr;
147 /* ??? See if we can avoid exposing so much of the loader internals. */
149 * MAX_ARG_PAGES defines the number of pages allocated for arguments
150 * and envelope for the new program. 32 should suffice, this gives
151 * a maximum env+arg of 128kB w/4KB pages!
153 #define MAX_ARG_PAGES 33
155 /* Read a good amount of data initially, to hopefully get all the
156 program headers loaded. */
157 #define BPRM_BUF_SIZE 1024
160 * This structure is used to hold the arguments that are
161 * used when loading binaries.
163 struct linux_binprm {
164 char buf[BPRM_BUF_SIZE] __attribute__((aligned));
165 void *page[MAX_ARG_PAGES];
166 abi_ulong p;
167 int fd;
168 int e_uid, e_gid;
169 int argc, envc;
170 char **argv;
171 char **envp;
172 char * filename; /* Name of binary */
173 int (*core_dump)(int, const CPUState *); /* coredump routine */
176 void do_init_thread(struct target_pt_regs *regs, struct image_info *infop);
177 abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp,
178 abi_ulong stringp, int push_ptr);
179 int loader_exec(const char * filename, char ** argv, char ** envp,
180 struct target_pt_regs * regs, struct image_info *infop,
181 struct linux_binprm *);
183 int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
184 struct image_info * info);
185 int load_flt_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
186 struct image_info * info);
188 abi_long memcpy_to_target(abi_ulong dest, const void *src,
189 unsigned long len);
190 void target_set_brk(abi_ulong new_brk);
191 abi_long do_brk(abi_ulong new_brk);
192 void syscall_init(void);
193 abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
194 abi_long arg2, abi_long arg3, abi_long arg4,
195 abi_long arg5, abi_long arg6, abi_long arg7,
196 abi_long arg8);
197 void gemu_log(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
198 extern THREAD CPUState *thread_env;
199 void cpu_loop(CPUState *env);
200 char *target_strerror(int err);
201 int get_osversion(void);
202 void fork_start(void);
203 void fork_end(int child);
205 #include "qemu-log.h"
207 /* strace.c */
208 void print_syscall(int num,
209 abi_long arg1, abi_long arg2, abi_long arg3,
210 abi_long arg4, abi_long arg5, abi_long arg6);
211 void print_syscall_ret(int num, abi_long arg1);
212 extern int do_strace;
214 /* signal.c */
215 void process_pending_signals(CPUState *cpu_env);
216 void signal_init(void);
217 int queue_signal(CPUState *env, int sig, target_siginfo_t *info);
218 void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info);
219 void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo);
220 int target_to_host_signal(int sig);
221 int host_to_target_signal(int sig);
222 long do_sigreturn(CPUState *env);
223 long do_rt_sigreturn(CPUState *env);
224 abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp);
226 #ifdef TARGET_I386
227 /* vm86.c */
228 void save_v86_state(CPUX86State *env);
229 void handle_vm86_trap(CPUX86State *env, int trapno);
230 void handle_vm86_fault(CPUX86State *env);
231 int do_vm86(CPUX86State *env, long subfunction, abi_ulong v86_addr);
232 #elif defined(TARGET_SPARC64)
233 void sparc64_set_context(CPUSPARCState *env);
234 void sparc64_get_context(CPUSPARCState *env);
235 #endif
237 /* mmap.c */
238 int target_mprotect(abi_ulong start, abi_ulong len, int prot);
239 abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
240 int flags, int fd, abi_ulong offset);
241 int target_munmap(abi_ulong start, abi_ulong len);
242 abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size,
243 abi_ulong new_size, unsigned long flags,
244 abi_ulong new_addr);
245 int target_msync(abi_ulong start, abi_ulong len, int flags);
246 extern unsigned long last_brk;
247 void mmap_lock(void);
248 void mmap_unlock(void);
249 abi_ulong mmap_find_vma(abi_ulong, abi_ulong);
250 void cpu_list_lock(void);
251 void cpu_list_unlock(void);
252 #if defined(CONFIG_USE_NPTL)
253 void mmap_fork_start(void);
254 void mmap_fork_end(int child);
255 #endif
257 /* main.c */
258 extern unsigned long guest_stack_size;
260 /* user access */
262 #define VERIFY_READ 0
263 #define VERIFY_WRITE 1 /* implies read access */
265 static inline int access_ok(int type, abi_ulong addr, abi_ulong size)
267 return page_check_range((target_ulong)addr, size,
268 (type == VERIFY_READ) ? PAGE_READ : (PAGE_READ | PAGE_WRITE)) == 0;
271 /* NOTE __get_user and __put_user use host pointers and don't check access. */
272 /* These are usually used to access struct data members once the
273 * struct has been locked - usually with lock_user_struct().
275 #define __put_user(x, hptr)\
277 switch(sizeof(*hptr)) {\
278 case 1:\
279 *(uint8_t *)(hptr) = (uint8_t)(typeof(*hptr))(x);\
280 break;\
281 case 2:\
282 *(uint16_t *)(hptr) = tswap16((uint16_t)(typeof(*hptr))(x));\
283 break;\
284 case 4:\
285 *(uint32_t *)(hptr) = tswap32((uint32_t)(typeof(*hptr))(x));\
286 break;\
287 case 8:\
288 *(uint64_t *)(hptr) = tswap64((typeof(*hptr))(x));\
289 break;\
290 default:\
291 abort();\
296 #define __get_user(x, hptr) \
298 switch(sizeof(*hptr)) {\
299 case 1:\
300 x = (typeof(*hptr))*(uint8_t *)(hptr);\
301 break;\
302 case 2:\
303 x = (typeof(*hptr))tswap16(*(uint16_t *)(hptr));\
304 break;\
305 case 4:\
306 x = (typeof(*hptr))tswap32(*(uint32_t *)(hptr));\
307 break;\
308 case 8:\
309 x = (typeof(*hptr))tswap64(*(uint64_t *)(hptr));\
310 break;\
311 default:\
312 /* avoid warning */\
313 x = 0;\
314 abort();\
319 /* put_user()/get_user() take a guest address and check access */
320 /* These are usually used to access an atomic data type, such as an int,
321 * that has been passed by address. These internally perform locking
322 * and unlocking on the data type.
324 #define put_user(x, gaddr, target_type) \
325 ({ \
326 abi_ulong __gaddr = (gaddr); \
327 target_type *__hptr; \
328 abi_long __ret; \
329 if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \
330 __ret = __put_user((x), __hptr); \
331 unlock_user(__hptr, __gaddr, sizeof(target_type)); \
332 } else \
333 __ret = -TARGET_EFAULT; \
334 __ret; \
337 #define get_user(x, gaddr, target_type) \
338 ({ \
339 abi_ulong __gaddr = (gaddr); \
340 target_type *__hptr; \
341 abi_long __ret; \
342 if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \
343 __ret = __get_user((x), __hptr); \
344 unlock_user(__hptr, __gaddr, 0); \
345 } else { \
346 /* avoid warning */ \
347 (x) = 0; \
348 __ret = -TARGET_EFAULT; \
350 __ret; \
353 #define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong)
354 #define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long)
355 #define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t)
356 #define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t)
357 #define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t)
358 #define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t)
359 #define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t)
360 #define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t)
361 #define put_user_u8(x, gaddr) put_user((x), (gaddr), uint8_t)
362 #define put_user_s8(x, gaddr) put_user((x), (gaddr), int8_t)
364 #define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong)
365 #define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long)
366 #define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t)
367 #define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t)
368 #define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t)
369 #define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t)
370 #define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t)
371 #define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t)
372 #define get_user_u8(x, gaddr) get_user((x), (gaddr), uint8_t)
373 #define get_user_s8(x, gaddr) get_user((x), (gaddr), int8_t)
375 /* copy_from_user() and copy_to_user() are usually used to copy data
376 * buffers between the target and host. These internally perform
377 * locking/unlocking of the memory.
379 abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len);
380 abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len);
382 /* Functions for accessing guest memory. The tget and tput functions
383 read/write single values, byteswapping as necessary. The lock_user
384 gets a pointer to a contiguous area of guest memory, but does not perform
385 and byteswapping. lock_user may return either a pointer to the guest
386 memory, or a temporary buffer. */
388 /* Lock an area of guest memory into the host. If copy is true then the
389 host area will have the same contents as the guest. */
390 static inline void *lock_user(int type, abi_ulong guest_addr, long len, int copy)
392 if (!access_ok(type, guest_addr, len))
393 return NULL;
394 #ifdef DEBUG_REMAP
396 void *addr;
397 addr = malloc(len);
398 if (copy)
399 memcpy(addr, g2h(guest_addr), len);
400 else
401 memset(addr, 0, len);
402 return addr;
404 #else
405 return g2h(guest_addr);
406 #endif
409 /* Unlock an area of guest memory. The first LEN bytes must be
410 flushed back to guest memory. host_ptr = NULL is explicitly
411 allowed and does nothing. */
412 static inline void unlock_user(void *host_ptr, abi_ulong guest_addr,
413 long len)
416 #ifdef DEBUG_REMAP
417 if (!host_ptr)
418 return;
419 if (host_ptr == g2h(guest_addr))
420 return;
421 if (len > 0)
422 memcpy(g2h(guest_addr), host_ptr, len);
423 free(host_ptr);
424 #endif
427 /* Return the length of a string in target memory or -TARGET_EFAULT if
428 access error. */
429 abi_long target_strlen(abi_ulong gaddr);
431 /* Like lock_user but for null terminated strings. */
432 static inline void *lock_user_string(abi_ulong guest_addr)
434 abi_long len;
435 len = target_strlen(guest_addr);
436 if (len < 0)
437 return NULL;
438 return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1);
441 /* Helper macros for locking/ulocking a target struct. */
442 #define lock_user_struct(type, host_ptr, guest_addr, copy) \
443 (host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy))
444 #define unlock_user_struct(host_ptr, guest_addr, copy) \
445 unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0)
447 #if defined(CONFIG_USE_NPTL)
448 #include <pthread.h>
449 #endif
451 #endif /* QEMU_H */