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17#ifndef QEMU_H
18#define QEMU_H
19
20
21#include "cpu.h"
22#include "exec/cpu_ldst.h"
23
24#undef DEBUG_REMAP
25#ifdef DEBUG_REMAP
26#endif
27
28#include "exec/user/abitypes.h"
29
30extern char **environ;
31
32enum BSDType {
33 target_freebsd,
34 target_netbsd,
35 target_openbsd,
36};
37extern enum BSDType bsd_type;
38
39#include "syscall_defs.h"
40#include "target_syscall.h"
41#include "exec/gdbstub.h"
42
43#if defined(CONFIG_USE_NPTL)
44#define THREAD __thread
45#else
46#define THREAD
47#endif
48
49
50
51
52
53
54struct image_info {
55 abi_ulong load_addr;
56 abi_ulong start_code;
57 abi_ulong end_code;
58 abi_ulong start_data;
59 abi_ulong end_data;
60 abi_ulong start_brk;
61 abi_ulong brk;
62 abi_ulong start_mmap;
63 abi_ulong mmap;
64 abi_ulong rss;
65 abi_ulong start_stack;
66 abi_ulong entry;
67 abi_ulong code_offset;
68 abi_ulong data_offset;
69 int personality;
70};
71
72#define MAX_SIGQUEUE_SIZE 1024
73
74struct sigqueue {
75 struct sigqueue *next;
76};
77
78struct emulated_sigtable {
79 int pending;
80 struct sigqueue *first;
81
82 struct sigqueue info;
83};
84
85
86
87
88typedef struct TaskState {
89 pid_t ts_tid;
90
91 struct TaskState *next;
92 int used;
93 struct image_info *info;
94
95 struct emulated_sigtable sigtab[TARGET_NSIG];
96 struct sigqueue sigqueue_table[MAX_SIGQUEUE_SIZE];
97 struct sigqueue *first_free;
98 int signal_pending;
99
100 uint8_t stack[];
101} __attribute__((aligned(16))) TaskState;
102
103void init_task_state(TaskState *ts);
104extern const char *qemu_uname_release;
105extern unsigned long mmap_min_addr;
106
107
108
109
110
111
112#define MAX_ARG_PAGES 32
113
114
115
116
117
118struct bsd_binprm {
119 char buf[128];
120 void *page[MAX_ARG_PAGES];
121 abi_ulong p;
122 int fd;
123 int e_uid, e_gid;
124 int argc, envc;
125 char **argv;
126 char **envp;
127 char *filename;
128};
129
130void do_init_thread(struct target_pt_regs *regs, struct image_info *infop);
131abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp,
132 abi_ulong stringp, int push_ptr);
133int loader_exec(const char *filename, char **argv, char **envp,
134 struct target_pt_regs *regs, struct image_info *infop);
135
136int load_elf_binary(struct bsd_binprm *bprm, struct target_pt_regs *regs,
137 struct image_info *info);
138int load_flt_binary(struct bsd_binprm *bprm, struct target_pt_regs *regs,
139 struct image_info *info);
140
141abi_long memcpy_to_target(abi_ulong dest, const void *src,
142 unsigned long len);
143void target_set_brk(abi_ulong new_brk);
144abi_long do_brk(abi_ulong new_brk);
145void syscall_init(void);
146abi_long do_freebsd_syscall(void *cpu_env, int num, abi_long arg1,
147 abi_long arg2, abi_long arg3, abi_long arg4,
148 abi_long arg5, abi_long arg6, abi_long arg7,
149 abi_long arg8);
150abi_long do_netbsd_syscall(void *cpu_env, int num, abi_long arg1,
151 abi_long arg2, abi_long arg3, abi_long arg4,
152 abi_long arg5, abi_long arg6);
153abi_long do_openbsd_syscall(void *cpu_env, int num, abi_long arg1,
154 abi_long arg2, abi_long arg3, abi_long arg4,
155 abi_long arg5, abi_long arg6);
156void gemu_log(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
157extern THREAD CPUState *thread_cpu;
158void cpu_loop(CPUArchState *env);
159char *target_strerror(int err);
160int get_osversion(void);
161void fork_start(void);
162void fork_end(int child);
163
164#include "qemu/log.h"
165
166
167struct syscallname {
168 int nr;
169 const char *name;
170 const char *format;
171 void (*call)(const struct syscallname *,
172 abi_long, abi_long, abi_long,
173 abi_long, abi_long, abi_long);
174 void (*result)(const struct syscallname *, abi_long);
175};
176
177void
178print_freebsd_syscall(int num,
179 abi_long arg1, abi_long arg2, abi_long arg3,
180 abi_long arg4, abi_long arg5, abi_long arg6);
181void print_freebsd_syscall_ret(int num, abi_long ret);
182void
183print_netbsd_syscall(int num,
184 abi_long arg1, abi_long arg2, abi_long arg3,
185 abi_long arg4, abi_long arg5, abi_long arg6);
186void print_netbsd_syscall_ret(int num, abi_long ret);
187void
188print_openbsd_syscall(int num,
189 abi_long arg1, abi_long arg2, abi_long arg3,
190 abi_long arg4, abi_long arg5, abi_long arg6);
191void print_openbsd_syscall_ret(int num, abi_long ret);
192extern int do_strace;
193
194
195void process_pending_signals(CPUArchState *cpu_env);
196void signal_init(void);
197long do_sigreturn(CPUArchState *env);
198long do_rt_sigreturn(CPUArchState *env);
199abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp);
200
201
202int target_mprotect(abi_ulong start, abi_ulong len, int prot);
203abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
204 int flags, int fd, abi_ulong offset);
205int target_munmap(abi_ulong start, abi_ulong len);
206abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size,
207 abi_ulong new_size, unsigned long flags,
208 abi_ulong new_addr);
209int target_msync(abi_ulong start, abi_ulong len, int flags);
210extern unsigned long last_brk;
211void mmap_fork_start(void);
212void mmap_fork_end(int child);
213
214
215extern unsigned long x86_stack_size;
216
217
218
219#define VERIFY_READ PAGE_READ
220#define VERIFY_WRITE (PAGE_READ | PAGE_WRITE)
221
222static inline bool access_ok(int type, abi_ulong addr, abi_ulong size)
223{
224 return page_check_range((target_ulong)addr, size, type) == 0;
225}
226
227
228
229
230
231
232
233#define __put_user(x, hptr)\
234({\
235 int size = sizeof(*hptr);\
236 switch (size) {\
237 case 1:\
238 *(uint8_t *)(hptr) = (uint8_t)(typeof(*hptr))(x);\
239 break;\
240 case 2:\
241 *(uint16_t *)(hptr) = tswap16((typeof(*hptr))(x));\
242 break;\
243 case 4:\
244 *(uint32_t *)(hptr) = tswap32((typeof(*hptr))(x));\
245 break;\
246 case 8:\
247 *(uint64_t *)(hptr) = tswap64((typeof(*hptr))(x));\
248 break;\
249 default:\
250 abort();\
251 } \
252 0;\
253})
254
255#define __get_user(x, hptr) \
256({\
257 int size = sizeof(*hptr);\
258 switch (size) {\
259 case 1:\
260 x = (typeof(*hptr))*(uint8_t *)(hptr);\
261 break;\
262 case 2:\
263 x = (typeof(*hptr))tswap16(*(uint16_t *)(hptr));\
264 break;\
265 case 4:\
266 x = (typeof(*hptr))tswap32(*(uint32_t *)(hptr));\
267 break;\
268 case 8:\
269 x = (typeof(*hptr))tswap64(*(uint64_t *)(hptr));\
270 break;\
271 default:\
272 x = 0;\
273 abort();\
274 } \
275 0;\
276})
277
278
279
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281
282
283
284
285#define put_user(x, gaddr, target_type) \
286({ \
287 abi_ulong __gaddr = (gaddr); \
288 target_type *__hptr; \
289 abi_long __ret; \
290 __hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0); \
291 if (__hptr) { \
292 __ret = __put_user((x), __hptr); \
293 unlock_user(__hptr, __gaddr, sizeof(target_type)); \
294 } else \
295 __ret = -TARGET_EFAULT; \
296 __ret; \
297})
298
299#define get_user(x, gaddr, target_type) \
300({ \
301 abi_ulong __gaddr = (gaddr); \
302 target_type *__hptr; \
303 abi_long __ret; \
304 __hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1); \
305 if (__hptr) { \
306 __ret = __get_user((x), __hptr); \
307 unlock_user(__hptr, __gaddr, 0); \
308 } else { \
309 (x) = 0; \
310 __ret = -TARGET_EFAULT; \
311 } \
312 __ret; \
313})
314
315#define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong)
316#define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long)
317#define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t)
318#define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t)
319#define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t)
320#define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t)
321#define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t)
322#define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t)
323#define put_user_u8(x, gaddr) put_user((x), (gaddr), uint8_t)
324#define put_user_s8(x, gaddr) put_user((x), (gaddr), int8_t)
325
326#define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong)
327#define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long)
328#define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t)
329#define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t)
330#define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t)
331#define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t)
332#define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t)
333#define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t)
334#define get_user_u8(x, gaddr) get_user((x), (gaddr), uint8_t)
335#define get_user_s8(x, gaddr) get_user((x), (gaddr), int8_t)
336
337
338
339
340
341
342abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len);
343abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len);
344
345
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353
354
355
356
357static inline void *lock_user(int type, abi_ulong guest_addr, long len,
358 int copy)
359{
360 if (!access_ok(type, guest_addr, len)) {
361 return NULL;
362 }
363#ifdef DEBUG_REMAP
364 {
365 void *addr;
366 addr = g_malloc(len);
367 if (copy) {
368 memcpy(addr, g2h_untagged(guest_addr), len);
369 } else {
370 memset(addr, 0, len);
371 }
372 return addr;
373 }
374#else
375 return g2h_untagged(guest_addr);
376#endif
377}
378
379
380
381
382
383static inline void unlock_user(void *host_ptr, abi_ulong guest_addr,
384 long len)
385{
386
387#ifdef DEBUG_REMAP
388 if (!host_ptr) {
389 return;
390 }
391 if (host_ptr == g2h_untagged(guest_addr)) {
392 return;
393 }
394 if (len > 0) {
395 memcpy(g2h_untagged(guest_addr), host_ptr, len);
396 }
397 g_free(host_ptr);
398#endif
399}
400
401
402
403
404
405abi_long target_strlen(abi_ulong gaddr);
406
407
408static inline void *lock_user_string(abi_ulong guest_addr)
409{
410 abi_long len;
411 len = target_strlen(guest_addr);
412 if (len < 0) {
413 return NULL;
414 }
415 return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1);
416}
417
418
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) \
422 unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0)
423
424#if defined(CONFIG_USE_NPTL)
425#include <pthread.h>
426#endif
427
428#endif
429