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/>.
24 #include "exec/cpu_ldst.h"
29 #endif /* DEBUG_REMAP */
31 #include "exec/user/abitypes.h"
38 extern enum BSDType bsd_type
;
40 #include "syscall_defs.h"
42 #include "target_signal.h"
43 #include "exec/gdbstub.h"
45 #if defined(CONFIG_USE_NPTL)
46 #define THREAD __thread
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
66 abi_ulong start_stack
;
68 abi_ulong code_offset
;
69 abi_ulong data_offset
;
73 #define MAX_SIGQUEUE_SIZE 1024
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
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 */
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
{
120 void *page
[MAX_ARG_PAGES
];
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
,
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
,
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"
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
);
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
);
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
);
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
;
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
);
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
,
212 int target_msync(abi_ulong start
, abi_ulong len
, int flags
);
213 extern unsigned long last_brk
;
214 void mmap_lock(void);
215 void mmap_unlock(void);
216 void cpu_list_lock(void);
217 void cpu_list_unlock(void);
218 #if defined(CONFIG_USE_NPTL)
219 void mmap_fork_start(void);
220 void mmap_fork_end(int child
);
224 extern unsigned long x86_stack_size
;
228 #define VERIFY_READ 0
229 #define VERIFY_WRITE 1 /* implies read access */
231 static inline int access_ok(int type
, abi_ulong addr
, abi_ulong size
)
233 return page_check_range((target_ulong
)addr
, size
,
234 (type
== VERIFY_READ
) ? PAGE_READ
: (PAGE_READ
| PAGE_WRITE
)) == 0;
237 /* NOTE __get_user and __put_user use host pointers and don't check access. */
238 /* These are usually used to access struct data members once the
239 * struct has been locked - usually with lock_user_struct().
241 #define __put_user(x, hptr)\
243 int size = sizeof(*hptr);\
246 *(uint8_t *)(hptr) = (uint8_t)(typeof(*hptr))(x);\
249 *(uint16_t *)(hptr) = tswap16((typeof(*hptr))(x));\
252 *(uint32_t *)(hptr) = tswap32((typeof(*hptr))(x));\
255 *(uint64_t *)(hptr) = tswap64((typeof(*hptr))(x));\
263 #define __get_user(x, hptr) \
265 int size = sizeof(*hptr);\
268 x = (typeof(*hptr))*(uint8_t *)(hptr);\
271 x = (typeof(*hptr))tswap16(*(uint16_t *)(hptr));\
274 x = (typeof(*hptr))tswap32(*(uint32_t *)(hptr));\
277 x = (typeof(*hptr))tswap64(*(uint64_t *)(hptr));\
287 /* put_user()/get_user() take a guest address and check access */
288 /* These are usually used to access an atomic data type, such as an int,
289 * that has been passed by address. These internally perform locking
290 * and unlocking on the data type.
292 #define put_user(x, gaddr, target_type) \
294 abi_ulong __gaddr = (gaddr); \
295 target_type *__hptr; \
297 if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \
298 __ret = __put_user((x), __hptr); \
299 unlock_user(__hptr, __gaddr, sizeof(target_type)); \
301 __ret = -TARGET_EFAULT; \
305 #define get_user(x, gaddr, target_type) \
307 abi_ulong __gaddr = (gaddr); \
308 target_type *__hptr; \
310 if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \
311 __ret = __get_user((x), __hptr); \
312 unlock_user(__hptr, __gaddr, 0); \
314 /* avoid warning */ \
316 __ret = -TARGET_EFAULT; \
321 #define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong)
322 #define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long)
323 #define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t)
324 #define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t)
325 #define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t)
326 #define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t)
327 #define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t)
328 #define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t)
329 #define put_user_u8(x, gaddr) put_user((x), (gaddr), uint8_t)
330 #define put_user_s8(x, gaddr) put_user((x), (gaddr), int8_t)
332 #define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong)
333 #define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long)
334 #define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t)
335 #define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t)
336 #define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t)
337 #define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t)
338 #define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t)
339 #define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t)
340 #define get_user_u8(x, gaddr) get_user((x), (gaddr), uint8_t)
341 #define get_user_s8(x, gaddr) get_user((x), (gaddr), int8_t)
343 /* copy_from_user() and copy_to_user() are usually used to copy data
344 * buffers between the target and host. These internally perform
345 * locking/unlocking of the memory.
347 abi_long
copy_from_user(void *hptr
, abi_ulong gaddr
, size_t len
);
348 abi_long
copy_to_user(abi_ulong gaddr
, void *hptr
, size_t len
);
350 /* Functions for accessing guest memory. The tget and tput functions
351 read/write single values, byteswapping as necessary. The lock_user function
352 gets a pointer to a contiguous area of guest memory, but does not perform
353 any byteswapping. lock_user may return either a pointer to the guest
354 memory, or a temporary buffer. */
356 /* Lock an area of guest memory into the host. If copy is true then the
357 host area will have the same contents as the guest. */
358 static inline void *lock_user(int type
, abi_ulong guest_addr
, long len
, int copy
)
360 if (!access_ok(type
, guest_addr
, len
))
367 memcpy(addr
, g2h(guest_addr
), len
);
369 memset(addr
, 0, len
);
373 return g2h(guest_addr
);
377 /* Unlock an area of guest memory. The first LEN bytes must be
378 flushed back to guest memory. host_ptr = NULL is explicitly
379 allowed and does nothing. */
380 static inline void unlock_user(void *host_ptr
, abi_ulong guest_addr
,
387 if (host_ptr
== g2h(guest_addr
))
390 memcpy(g2h(guest_addr
), host_ptr
, len
);
395 /* Return the length of a string in target memory or -TARGET_EFAULT if
397 abi_long
target_strlen(abi_ulong gaddr
);
399 /* Like lock_user but for null terminated strings. */
400 static inline void *lock_user_string(abi_ulong guest_addr
)
403 len
= target_strlen(guest_addr
);
406 return lock_user(VERIFY_READ
, guest_addr
, (long)(len
+ 1), 1);
409 /* Helper macros for locking/unlocking a target struct. */
410 #define lock_user_struct(type, host_ptr, guest_addr, copy) \
411 (host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy))
412 #define unlock_user_struct(host_ptr, guest_addr, copy) \
413 unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0)
415 #if defined(CONFIG_USE_NPTL)