block: Don't wait serialising for non-COR read requests
[qemu/ar7.git] / bsd-user / qemu.h
blob735cb4042a589f244c559da9b889ee3e4829e731
1 /*
2 * qemu bsd user mode definition
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see <http://www.gnu.org/licenses/>.
17 #ifndef QEMU_H
18 #define QEMU_H
20 #include <signal.h>
21 #include <string.h>
23 #include "cpu.h"
24 #include "exec/cpu_ldst.h"
26 #undef DEBUG_REMAP
27 #ifdef DEBUG_REMAP
28 #include <stdlib.h>
29 #endif /* DEBUG_REMAP */
31 #include "exec/user/abitypes.h"
33 enum BSDType {
34 target_freebsd,
35 target_netbsd,
36 target_openbsd,
38 extern enum BSDType bsd_type;
40 #include "syscall_defs.h"
41 #include "syscall.h"
42 #include "target_signal.h"
43 #include "exec/gdbstub.h"
45 #if defined(CONFIG_USE_NPTL)
46 #define THREAD __thread
47 #else
48 #define THREAD
49 #endif
51 /* This struct is used to hold certain information about the image.
52 * Basically, it replicates in user space what would be certain
53 * task_struct fields in the kernel
55 struct image_info {
56 abi_ulong load_addr;
57 abi_ulong start_code;
58 abi_ulong end_code;
59 abi_ulong start_data;
60 abi_ulong end_data;
61 abi_ulong start_brk;
62 abi_ulong brk;
63 abi_ulong start_mmap;
64 abi_ulong mmap;
65 abi_ulong rss;
66 abi_ulong start_stack;
67 abi_ulong entry;
68 abi_ulong code_offset;
69 abi_ulong data_offset;
70 int personality;
73 #define MAX_SIGQUEUE_SIZE 1024
75 struct sigqueue {
76 struct sigqueue *next;
77 //target_siginfo_t info;
80 struct emulated_sigtable {
81 int pending; /* true if signal is pending */
82 struct sigqueue *first;
83 struct sigqueue info; /* in order to always have memory for the
84 first signal, we put it here */
87 /* NOTE: we force a big alignment so that the stack stored after is
88 aligned too */
89 typedef struct TaskState {
90 struct TaskState *next;
91 int used; /* non zero if used */
92 struct image_info *info;
94 struct emulated_sigtable sigtab[TARGET_NSIG];
95 struct sigqueue sigqueue_table[MAX_SIGQUEUE_SIZE]; /* siginfo queue */
96 struct sigqueue *first_free; /* first free siginfo queue entry */
97 int signal_pending; /* non zero if a signal may be pending */
99 uint8_t stack[0];
100 } __attribute__((aligned(16))) TaskState;
102 void init_task_state(TaskState *ts);
103 extern const char *qemu_uname_release;
104 extern unsigned long mmap_min_addr;
106 /* ??? See if we can avoid exposing so much of the loader internals. */
108 * MAX_ARG_PAGES defines the number of pages allocated for arguments
109 * and envelope for the new program. 32 should suffice, this gives
110 * a maximum env+arg of 128kB w/4KB pages!
112 #define MAX_ARG_PAGES 32
115 * This structure is used to hold the arguments that are
116 * used when loading binaries.
118 struct linux_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; /* Name of binary */
130 void do_init_thread(struct target_pt_regs *regs, struct image_info *infop);
131 abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp,
132 abi_ulong stringp, int push_ptr);
133 int loader_exec(const char * filename, char ** argv, char ** envp,
134 struct target_pt_regs * regs, struct image_info *infop);
136 int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
137 struct image_info * info);
138 int load_flt_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
139 struct image_info * info);
141 abi_long memcpy_to_target(abi_ulong dest, const void *src,
142 unsigned long len);
143 void target_set_brk(abi_ulong new_brk);
144 abi_long do_brk(abi_ulong new_brk);
145 void syscall_init(void);
146 abi_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);
150 abi_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);
153 abi_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);
156 void gemu_log(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
157 extern THREAD CPUState *thread_cpu;
158 void cpu_loop(CPUArchState *env);
159 char *target_strerror(int err);
160 int get_osversion(void);
161 void fork_start(void);
162 void fork_end(int child);
164 #include "qemu/log.h"
166 /* strace.c */
167 struct 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);
177 void
178 print_freebsd_syscall(int num,
179 abi_long arg1, abi_long arg2, abi_long arg3,
180 abi_long arg4, abi_long arg5, abi_long arg6);
181 void print_freebsd_syscall_ret(int num, abi_long ret);
182 void
183 print_netbsd_syscall(int num,
184 abi_long arg1, abi_long arg2, abi_long arg3,
185 abi_long arg4, abi_long arg5, abi_long arg6);
186 void print_netbsd_syscall_ret(int num, abi_long ret);
187 void
188 print_openbsd_syscall(int num,
189 abi_long arg1, abi_long arg2, abi_long arg3,
190 abi_long arg4, abi_long arg5, abi_long arg6);
191 void print_openbsd_syscall_ret(int num, abi_long ret);
192 extern int do_strace;
194 /* signal.c */
195 void process_pending_signals(CPUArchState *cpu_env);
196 void signal_init(void);
197 //int queue_signal(CPUArchState *env, int sig, target_siginfo_t *info);
198 //void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info);
199 //void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo);
200 long do_sigreturn(CPUArchState *env);
201 long do_rt_sigreturn(CPUArchState *env);
202 abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp);
204 /* mmap.c */
205 int target_mprotect(abi_ulong start, abi_ulong len, int prot);
206 abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
207 int flags, int fd, abi_ulong offset);
208 int target_munmap(abi_ulong start, abi_ulong len);
209 abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size,
210 abi_ulong new_size, unsigned long flags,
211 abi_ulong new_addr);
212 int target_msync(abi_ulong start, abi_ulong len, int flags);
213 extern unsigned long last_brk;
214 void cpu_list_lock(void);
215 void cpu_list_unlock(void);
216 #if defined(CONFIG_USE_NPTL)
217 void mmap_fork_start(void);
218 void mmap_fork_end(int child);
219 #endif
221 /* main.c */
222 extern unsigned long x86_stack_size;
224 /* user access */
226 #define VERIFY_READ 0
227 #define VERIFY_WRITE 1 /* implies read access */
229 static inline int access_ok(int type, abi_ulong addr, abi_ulong size)
231 return page_check_range((target_ulong)addr, size,
232 (type == VERIFY_READ) ? PAGE_READ : (PAGE_READ | PAGE_WRITE)) == 0;
235 /* NOTE __get_user and __put_user use host pointers and don't check access. */
236 /* These are usually used to access struct data members once the
237 * struct has been locked - usually with lock_user_struct().
239 #define __put_user(x, hptr)\
241 int size = sizeof(*hptr);\
242 switch(size) {\
243 case 1:\
244 *(uint8_t *)(hptr) = (uint8_t)(typeof(*hptr))(x);\
245 break;\
246 case 2:\
247 *(uint16_t *)(hptr) = tswap16((typeof(*hptr))(x));\
248 break;\
249 case 4:\
250 *(uint32_t *)(hptr) = tswap32((typeof(*hptr))(x));\
251 break;\
252 case 8:\
253 *(uint64_t *)(hptr) = tswap64((typeof(*hptr))(x));\
254 break;\
255 default:\
256 abort();\
261 #define __get_user(x, hptr) \
263 int size = sizeof(*hptr);\
264 switch(size) {\
265 case 1:\
266 x = (typeof(*hptr))*(uint8_t *)(hptr);\
267 break;\
268 case 2:\
269 x = (typeof(*hptr))tswap16(*(uint16_t *)(hptr));\
270 break;\
271 case 4:\
272 x = (typeof(*hptr))tswap32(*(uint32_t *)(hptr));\
273 break;\
274 case 8:\
275 x = (typeof(*hptr))tswap64(*(uint64_t *)(hptr));\
276 break;\
277 default:\
278 /* avoid warning */\
279 x = 0;\
280 abort();\
285 /* put_user()/get_user() take a guest address and check access */
286 /* These are usually used to access an atomic data type, such as an int,
287 * that has been passed by address. These internally perform locking
288 * and unlocking on the data type.
290 #define put_user(x, gaddr, target_type) \
291 ({ \
292 abi_ulong __gaddr = (gaddr); \
293 target_type *__hptr; \
294 abi_long __ret; \
295 if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \
296 __ret = __put_user((x), __hptr); \
297 unlock_user(__hptr, __gaddr, sizeof(target_type)); \
298 } else \
299 __ret = -TARGET_EFAULT; \
300 __ret; \
303 #define get_user(x, gaddr, target_type) \
304 ({ \
305 abi_ulong __gaddr = (gaddr); \
306 target_type *__hptr; \
307 abi_long __ret; \
308 if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \
309 __ret = __get_user((x), __hptr); \
310 unlock_user(__hptr, __gaddr, 0); \
311 } else { \
312 /* avoid warning */ \
313 (x) = 0; \
314 __ret = -TARGET_EFAULT; \
316 __ret; \
319 #define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong)
320 #define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long)
321 #define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t)
322 #define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t)
323 #define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t)
324 #define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t)
325 #define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t)
326 #define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t)
327 #define put_user_u8(x, gaddr) put_user((x), (gaddr), uint8_t)
328 #define put_user_s8(x, gaddr) put_user((x), (gaddr), int8_t)
330 #define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong)
331 #define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long)
332 #define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t)
333 #define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t)
334 #define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t)
335 #define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t)
336 #define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t)
337 #define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t)
338 #define get_user_u8(x, gaddr) get_user((x), (gaddr), uint8_t)
339 #define get_user_s8(x, gaddr) get_user((x), (gaddr), int8_t)
341 /* copy_from_user() and copy_to_user() are usually used to copy data
342 * buffers between the target and host. These internally perform
343 * locking/unlocking of the memory.
345 abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len);
346 abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len);
348 /* Functions for accessing guest memory. The tget and tput functions
349 read/write single values, byteswapping as necessary. The lock_user function
350 gets a pointer to a contiguous area of guest memory, but does not perform
351 any byteswapping. lock_user may return either a pointer to the guest
352 memory, or a temporary buffer. */
354 /* Lock an area of guest memory into the host. If copy is true then the
355 host area will have the same contents as the guest. */
356 static inline void *lock_user(int type, abi_ulong guest_addr, long len, int copy)
358 if (!access_ok(type, guest_addr, len))
359 return NULL;
360 #ifdef DEBUG_REMAP
362 void *addr;
363 addr = malloc(len);
364 if (copy)
365 memcpy(addr, g2h(guest_addr), len);
366 else
367 memset(addr, 0, len);
368 return addr;
370 #else
371 return g2h(guest_addr);
372 #endif
375 /* Unlock an area of guest memory. The first LEN bytes must be
376 flushed back to guest memory. host_ptr = NULL is explicitly
377 allowed and does nothing. */
378 static inline void unlock_user(void *host_ptr, abi_ulong guest_addr,
379 long len)
382 #ifdef DEBUG_REMAP
383 if (!host_ptr)
384 return;
385 if (host_ptr == g2h(guest_addr))
386 return;
387 if (len > 0)
388 memcpy(g2h(guest_addr), host_ptr, len);
389 free(host_ptr);
390 #endif
393 /* Return the length of a string in target memory or -TARGET_EFAULT if
394 access error. */
395 abi_long target_strlen(abi_ulong gaddr);
397 /* Like lock_user but for null terminated strings. */
398 static inline void *lock_user_string(abi_ulong guest_addr)
400 abi_long len;
401 len = target_strlen(guest_addr);
402 if (len < 0)
403 return NULL;
404 return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1);
407 /* Helper macros for locking/unlocking a target struct. */
408 #define lock_user_struct(type, host_ptr, guest_addr, copy) \
409 (host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy))
410 #define unlock_user_struct(host_ptr, guest_addr, copy) \
411 unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0)
413 #if defined(CONFIG_USE_NPTL)
414 #include <pthread.h>
415 #endif
417 #endif /* QEMU_H */