root / bsd-user / qemu.h @ 753d11f2
History | View | Annotate | Download (13.4 kB)
1 |
#ifndef QEMU_H
|
---|---|
2 |
#define QEMU_H
|
3 |
|
4 |
#include <signal.h> |
5 |
#include <string.h> |
6 |
|
7 |
#include "cpu.h" |
8 |
|
9 |
#undef DEBUG_REMAP
|
10 |
#ifdef DEBUG_REMAP
|
11 |
#include <stdlib.h> |
12 |
#endif /* DEBUG_REMAP */ |
13 |
|
14 |
#include "qemu-types.h" |
15 |
|
16 |
enum BSDType {
|
17 |
target_freebsd, |
18 |
target_netbsd, |
19 |
target_openbsd, |
20 |
}; |
21 |
extern enum BSDType bsd_type; |
22 |
|
23 |
#include "syscall_defs.h" |
24 |
#include "syscall.h" |
25 |
#include "target_signal.h" |
26 |
#include "gdbstub.h" |
27 |
|
28 |
#if defined(CONFIG_USE_NPTL)
|
29 |
#define THREAD __thread
|
30 |
#else
|
31 |
#define THREAD
|
32 |
#endif
|
33 |
|
34 |
/* This struct is used to hold certain information about the image.
|
35 |
* Basically, it replicates in user space what would be certain
|
36 |
* task_struct fields in the kernel
|
37 |
*/
|
38 |
struct image_info {
|
39 |
abi_ulong load_addr; |
40 |
abi_ulong start_code; |
41 |
abi_ulong end_code; |
42 |
abi_ulong start_data; |
43 |
abi_ulong end_data; |
44 |
abi_ulong start_brk; |
45 |
abi_ulong brk; |
46 |
abi_ulong start_mmap; |
47 |
abi_ulong mmap; |
48 |
abi_ulong rss; |
49 |
abi_ulong start_stack; |
50 |
abi_ulong entry; |
51 |
abi_ulong code_offset; |
52 |
abi_ulong data_offset; |
53 |
int personality;
|
54 |
}; |
55 |
|
56 |
#define MAX_SIGQUEUE_SIZE 1024 |
57 |
|
58 |
struct sigqueue {
|
59 |
struct sigqueue *next;
|
60 |
//target_siginfo_t info;
|
61 |
}; |
62 |
|
63 |
struct emulated_sigtable {
|
64 |
int pending; /* true if signal is pending */ |
65 |
struct sigqueue *first;
|
66 |
struct sigqueue info; /* in order to always have memory for the |
67 |
first signal, we put it here */
|
68 |
}; |
69 |
|
70 |
/* NOTE: we force a big alignment so that the stack stored after is
|
71 |
aligned too */
|
72 |
typedef struct TaskState { |
73 |
struct TaskState *next;
|
74 |
int used; /* non zero if used */ |
75 |
struct image_info *info;
|
76 |
|
77 |
struct emulated_sigtable sigtab[TARGET_NSIG];
|
78 |
struct sigqueue sigqueue_table[MAX_SIGQUEUE_SIZE]; /* siginfo queue */ |
79 |
struct sigqueue *first_free; /* first free siginfo queue entry */ |
80 |
int signal_pending; /* non zero if a signal may be pending */ |
81 |
|
82 |
uint8_t stack[0];
|
83 |
} __attribute__((aligned(16))) TaskState;
|
84 |
|
85 |
void init_task_state(TaskState *ts);
|
86 |
extern const char *qemu_uname_release; |
87 |
#if defined(CONFIG_USE_GUEST_BASE)
|
88 |
extern unsigned long mmap_min_addr; |
89 |
#endif
|
90 |
|
91 |
/* ??? See if we can avoid exposing so much of the loader internals. */
|
92 |
/*
|
93 |
* MAX_ARG_PAGES defines the number of pages allocated for arguments
|
94 |
* and envelope for the new program. 32 should suffice, this gives
|
95 |
* a maximum env+arg of 128kB w/4KB pages!
|
96 |
*/
|
97 |
#define MAX_ARG_PAGES 32 |
98 |
|
99 |
/*
|
100 |
* This structure is used to hold the arguments that are
|
101 |
* used when loading binaries.
|
102 |
*/
|
103 |
struct linux_binprm {
|
104 |
char buf[128]; |
105 |
void *page[MAX_ARG_PAGES];
|
106 |
abi_ulong p; |
107 |
int fd;
|
108 |
int e_uid, e_gid;
|
109 |
int argc, envc;
|
110 |
char **argv;
|
111 |
char **envp;
|
112 |
char * filename; /* Name of binary */ |
113 |
}; |
114 |
|
115 |
void do_init_thread(struct target_pt_regs *regs, struct image_info *infop); |
116 |
abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp, |
117 |
abi_ulong stringp, int push_ptr);
|
118 |
int loader_exec(const char * filename, char ** argv, char ** envp, |
119 |
struct target_pt_regs * regs, struct image_info *infop); |
120 |
|
121 |
int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs, |
122 |
struct image_info * info);
|
123 |
int load_flt_binary(struct linux_binprm * bprm, struct target_pt_regs * regs, |
124 |
struct image_info * info);
|
125 |
|
126 |
abi_long memcpy_to_target(abi_ulong dest, const void *src, |
127 |
unsigned long len); |
128 |
void target_set_brk(abi_ulong new_brk);
|
129 |
abi_long do_brk(abi_ulong new_brk); |
130 |
void syscall_init(void); |
131 |
abi_long do_freebsd_syscall(void *cpu_env, int num, abi_long arg1, |
132 |
abi_long arg2, abi_long arg3, abi_long arg4, |
133 |
abi_long arg5, abi_long arg6, abi_long arg7, |
134 |
abi_long arg8); |
135 |
abi_long do_netbsd_syscall(void *cpu_env, int num, abi_long arg1, |
136 |
abi_long arg2, abi_long arg3, abi_long arg4, |
137 |
abi_long arg5, abi_long arg6); |
138 |
abi_long do_openbsd_syscall(void *cpu_env, int num, abi_long arg1, |
139 |
abi_long arg2, abi_long arg3, abi_long arg4, |
140 |
abi_long arg5, abi_long arg6); |
141 |
void gemu_log(const char *fmt, ...) GCC_FMT_ATTR(1, 2); |
142 |
extern THREAD CPUState *thread_env;
|
143 |
void cpu_loop(CPUState *env);
|
144 |
char *target_strerror(int err); |
145 |
int get_osversion(void); |
146 |
void fork_start(void); |
147 |
void fork_end(int child); |
148 |
|
149 |
#include "qemu-log.h" |
150 |
|
151 |
/* strace.c */
|
152 |
void
|
153 |
print_freebsd_syscall(int num,
|
154 |
abi_long arg1, abi_long arg2, abi_long arg3, |
155 |
abi_long arg4, abi_long arg5, abi_long arg6); |
156 |
void print_freebsd_syscall_ret(int num, abi_long ret); |
157 |
void
|
158 |
print_netbsd_syscall(int num,
|
159 |
abi_long arg1, abi_long arg2, abi_long arg3, |
160 |
abi_long arg4, abi_long arg5, abi_long arg6); |
161 |
void print_netbsd_syscall_ret(int num, abi_long ret); |
162 |
void
|
163 |
print_openbsd_syscall(int num,
|
164 |
abi_long arg1, abi_long arg2, abi_long arg3, |
165 |
abi_long arg4, abi_long arg5, abi_long arg6); |
166 |
void print_openbsd_syscall_ret(int num, abi_long ret); |
167 |
extern int do_strace; |
168 |
|
169 |
/* signal.c */
|
170 |
void process_pending_signals(CPUState *cpu_env);
|
171 |
void signal_init(void); |
172 |
//int queue_signal(CPUState *env, int sig, target_siginfo_t *info);
|
173 |
//void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info);
|
174 |
//void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo);
|
175 |
long do_sigreturn(CPUState *env);
|
176 |
long do_rt_sigreturn(CPUState *env);
|
177 |
abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp); |
178 |
|
179 |
/* mmap.c */
|
180 |
int target_mprotect(abi_ulong start, abi_ulong len, int prot); |
181 |
abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
|
182 |
int flags, int fd, abi_ulong offset); |
183 |
int target_munmap(abi_ulong start, abi_ulong len);
|
184 |
abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size, |
185 |
abi_ulong new_size, unsigned long flags, |
186 |
abi_ulong new_addr); |
187 |
int target_msync(abi_ulong start, abi_ulong len, int flags); |
188 |
extern unsigned long last_brk; |
189 |
void mmap_lock(void); |
190 |
void mmap_unlock(void); |
191 |
void cpu_list_lock(void); |
192 |
void cpu_list_unlock(void); |
193 |
#if defined(CONFIG_USE_NPTL)
|
194 |
void mmap_fork_start(void); |
195 |
void mmap_fork_end(int child); |
196 |
#endif
|
197 |
|
198 |
/* main.c */
|
199 |
extern unsigned long x86_stack_size; |
200 |
|
201 |
/* user access */
|
202 |
|
203 |
#define VERIFY_READ 0 |
204 |
#define VERIFY_WRITE 1 /* implies read access */ |
205 |
|
206 |
static inline int access_ok(int type, abi_ulong addr, abi_ulong size) |
207 |
{ |
208 |
return page_check_range((target_ulong)addr, size,
|
209 |
(type == VERIFY_READ) ? PAGE_READ : (PAGE_READ | PAGE_WRITE)) == 0;
|
210 |
} |
211 |
|
212 |
/* NOTE __get_user and __put_user use host pointers and don't check access. */
|
213 |
/* These are usually used to access struct data members once the
|
214 |
* struct has been locked - usually with lock_user_struct().
|
215 |
*/
|
216 |
#define __put_user(x, hptr)\
|
217 |
({\ |
218 |
int size = sizeof(*hptr);\ |
219 |
switch(size) {\
|
220 |
case 1:\ |
221 |
*(uint8_t *)(hptr) = (uint8_t)(typeof(*hptr))(x);\ |
222 |
break;\
|
223 |
case 2:\ |
224 |
*(uint16_t *)(hptr) = tswap16((typeof(*hptr))(x));\ |
225 |
break;\
|
226 |
case 4:\ |
227 |
*(uint32_t *)(hptr) = tswap32((typeof(*hptr))(x));\ |
228 |
break;\
|
229 |
case 8:\ |
230 |
*(uint64_t *)(hptr) = tswap64((typeof(*hptr))(x));\ |
231 |
break;\
|
232 |
default:\
|
233 |
abort();\ |
234 |
}\ |
235 |
0;\
|
236 |
}) |
237 |
|
238 |
#define __get_user(x, hptr) \
|
239 |
({\ |
240 |
int size = sizeof(*hptr);\ |
241 |
switch(size) {\
|
242 |
case 1:\ |
243 |
x = (typeof(*hptr))*(uint8_t *)(hptr);\ |
244 |
break;\
|
245 |
case 2:\ |
246 |
x = (typeof(*hptr))tswap16(*(uint16_t *)(hptr));\ |
247 |
break;\
|
248 |
case 4:\ |
249 |
x = (typeof(*hptr))tswap32(*(uint32_t *)(hptr));\ |
250 |
break;\
|
251 |
case 8:\ |
252 |
x = (typeof(*hptr))tswap64(*(uint64_t *)(hptr));\ |
253 |
break;\
|
254 |
default:\
|
255 |
/* avoid warning */\
|
256 |
x = 0;\
|
257 |
abort();\ |
258 |
}\ |
259 |
0;\
|
260 |
}) |
261 |
|
262 |
/* put_user()/get_user() take a guest address and check access */
|
263 |
/* These are usually used to access an atomic data type, such as an int,
|
264 |
* that has been passed by address. These internally perform locking
|
265 |
* and unlocking on the data type.
|
266 |
*/
|
267 |
#define put_user(x, gaddr, target_type) \
|
268 |
({ \ |
269 |
abi_ulong __gaddr = (gaddr); \ |
270 |
target_type *__hptr; \ |
271 |
abi_long __ret; \ |
272 |
if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \ |
273 |
__ret = __put_user((x), __hptr); \ |
274 |
unlock_user(__hptr, __gaddr, sizeof(target_type)); \
|
275 |
} else \
|
276 |
__ret = -TARGET_EFAULT; \ |
277 |
__ret; \ |
278 |
}) |
279 |
|
280 |
#define get_user(x, gaddr, target_type) \
|
281 |
({ \ |
282 |
abi_ulong __gaddr = (gaddr); \ |
283 |
target_type *__hptr; \ |
284 |
abi_long __ret; \ |
285 |
if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \ |
286 |
__ret = __get_user((x), __hptr); \ |
287 |
unlock_user(__hptr, __gaddr, 0); \
|
288 |
} else { \
|
289 |
/* avoid warning */ \
|
290 |
(x) = 0; \
|
291 |
__ret = -TARGET_EFAULT; \ |
292 |
} \ |
293 |
__ret; \ |
294 |
}) |
295 |
|
296 |
#define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong)
|
297 |
#define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long)
|
298 |
#define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t)
|
299 |
#define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t)
|
300 |
#define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t)
|
301 |
#define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t)
|
302 |
#define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t)
|
303 |
#define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t)
|
304 |
#define put_user_u8(x, gaddr) put_user((x), (gaddr), uint8_t)
|
305 |
#define put_user_s8(x, gaddr) put_user((x), (gaddr), int8_t)
|
306 |
|
307 |
#define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong)
|
308 |
#define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long)
|
309 |
#define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t)
|
310 |
#define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t)
|
311 |
#define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t)
|
312 |
#define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t)
|
313 |
#define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t)
|
314 |
#define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t)
|
315 |
#define get_user_u8(x, gaddr) get_user((x), (gaddr), uint8_t)
|
316 |
#define get_user_s8(x, gaddr) get_user((x), (gaddr), int8_t)
|
317 |
|
318 |
/* copy_from_user() and copy_to_user() are usually used to copy data
|
319 |
* buffers between the target and host. These internally perform
|
320 |
* locking/unlocking of the memory.
|
321 |
*/
|
322 |
abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len);
|
323 |
abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len);
|
324 |
|
325 |
/* Functions for accessing guest memory. The tget and tput functions
|
326 |
read/write single values, byteswapping as necessary. The lock_user
|
327 |
gets a pointer to a contiguous area of guest memory, but does not perform
|
328 |
and byteswapping. lock_user may return either a pointer to the guest
|
329 |
memory, or a temporary buffer. */
|
330 |
|
331 |
/* Lock an area of guest memory into the host. If copy is true then the
|
332 |
host area will have the same contents as the guest. */
|
333 |
static inline void *lock_user(int type, abi_ulong guest_addr, long len, int copy) |
334 |
{ |
335 |
if (!access_ok(type, guest_addr, len))
|
336 |
return NULL; |
337 |
#ifdef DEBUG_REMAP
|
338 |
{ |
339 |
void *addr;
|
340 |
addr = malloc(len); |
341 |
if (copy)
|
342 |
memcpy(addr, g2h(guest_addr), len); |
343 |
else
|
344 |
memset(addr, 0, len);
|
345 |
return addr;
|
346 |
} |
347 |
#else
|
348 |
return g2h(guest_addr);
|
349 |
#endif
|
350 |
} |
351 |
|
352 |
/* Unlock an area of guest memory. The first LEN bytes must be
|
353 |
flushed back to guest memory. host_ptr = NULL is explicitly
|
354 |
allowed and does nothing. */
|
355 |
static inline void unlock_user(void *host_ptr, abi_ulong guest_addr, |
356 |
long len)
|
357 |
{ |
358 |
|
359 |
#ifdef DEBUG_REMAP
|
360 |
if (!host_ptr)
|
361 |
return;
|
362 |
if (host_ptr == g2h(guest_addr))
|
363 |
return;
|
364 |
if (len > 0) |
365 |
memcpy(g2h(guest_addr), host_ptr, len); |
366 |
free(host_ptr); |
367 |
#endif
|
368 |
} |
369 |
|
370 |
/* Return the length of a string in target memory or -TARGET_EFAULT if
|
371 |
access error. */
|
372 |
abi_long target_strlen(abi_ulong gaddr); |
373 |
|
374 |
/* Like lock_user but for null terminated strings. */
|
375 |
static inline void *lock_user_string(abi_ulong guest_addr) |
376 |
{ |
377 |
abi_long len; |
378 |
len = target_strlen(guest_addr); |
379 |
if (len < 0) |
380 |
return NULL; |
381 |
return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1); |
382 |
} |
383 |
|
384 |
/* Helper macros for locking/ulocking a target struct. */
|
385 |
#define lock_user_struct(type, host_ptr, guest_addr, copy) \
|
386 |
(host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy))
|
387 |
#define unlock_user_struct(host_ptr, guest_addr, copy) \
|
388 |
unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0) |
389 |
|
390 |
#if defined(CONFIG_USE_NPTL)
|
391 |
#include <pthread.h> |
392 |
#endif
|
393 |
|
394 |
#endif /* QEMU_H */ |