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git.proxmox.com Git - mirror_qemu.git/blob - bsd-user/qemu.h
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/>.
22 #include "exec/cpu_ldst.h"
26 #endif /* DEBUG_REMAP */
28 #include "exec/user/abitypes.h"
30 extern char **environ
;
37 extern enum BSDType bsd_type
;
39 #include "syscall_defs.h"
40 #include "target_syscall.h"
41 #include "target_signal.h"
42 #include "exec/gdbstub.h"
44 #if defined(CONFIG_USE_NPTL)
45 #define THREAD __thread
50 /* This struct is used to hold certain information about the image.
51 * Basically, it replicates in user space what would be certain
52 * task_struct fields in the kernel
65 abi_ulong start_stack
;
67 abi_ulong code_offset
;
68 abi_ulong data_offset
;
72 #define MAX_SIGQUEUE_SIZE 1024
75 struct sigqueue
*next
;
78 struct emulated_sigtable
{
79 int pending
; /* true if signal is pending */
80 struct sigqueue
*first
;
81 struct sigqueue info
; /* in order to always have memory for the
82 first signal, we put it here */
85 /* NOTE: we force a big alignment so that the stack stored after is
87 typedef struct TaskState
{
88 pid_t ts_tid
; /* tid (or pid) of this task */
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 long do_sigreturn(CPUArchState
*env
);
198 long do_rt_sigreturn(CPUArchState
*env
);
199 abi_long
do_sigaltstack(abi_ulong uss_addr
, abi_ulong uoss_addr
, abi_ulong sp
);
202 int target_mprotect(abi_ulong start
, abi_ulong len
, int prot
);
203 abi_long
target_mmap(abi_ulong start
, abi_ulong len
, int prot
,
204 int flags
, int fd
, abi_ulong offset
);
205 int target_munmap(abi_ulong start
, abi_ulong len
);
206 abi_long
target_mremap(abi_ulong old_addr
, abi_ulong old_size
,
207 abi_ulong new_size
, unsigned long flags
,
209 int target_msync(abi_ulong start
, abi_ulong len
, int flags
);
210 extern unsigned long last_brk
;
211 void mmap_fork_start(void);
212 void mmap_fork_end(int child
);
215 extern unsigned long x86_stack_size
;
219 #define VERIFY_READ PAGE_READ
220 #define VERIFY_WRITE (PAGE_READ | PAGE_WRITE)
222 static inline bool access_ok(int type
, abi_ulong addr
, abi_ulong size
)
224 return page_check_range((target_ulong
)addr
, size
, type
) == 0;
227 /* NOTE __get_user and __put_user use host pointers and don't check access. */
228 /* These are usually used to access struct data members once the
229 * struct has been locked - usually with lock_user_struct().
231 #define __put_user(x, hptr)\
233 int size = sizeof(*hptr);\
236 *(uint8_t *)(hptr) = (uint8_t)(typeof(*hptr))(x);\
239 *(uint16_t *)(hptr) = tswap16((typeof(*hptr))(x));\
242 *(uint32_t *)(hptr) = tswap32((typeof(*hptr))(x));\
245 *(uint64_t *)(hptr) = tswap64((typeof(*hptr))(x));\
253 #define __get_user(x, hptr) \
255 int size = sizeof(*hptr);\
258 x = (typeof(*hptr))*(uint8_t *)(hptr);\
261 x = (typeof(*hptr))tswap16(*(uint16_t *)(hptr));\
264 x = (typeof(*hptr))tswap32(*(uint32_t *)(hptr));\
267 x = (typeof(*hptr))tswap64(*(uint64_t *)(hptr));\
277 /* put_user()/get_user() take a guest address and check access */
278 /* These are usually used to access an atomic data type, such as an int,
279 * that has been passed by address. These internally perform locking
280 * and unlocking on the data type.
282 #define put_user(x, gaddr, target_type) \
284 abi_ulong __gaddr = (gaddr); \
285 target_type *__hptr; \
287 if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \
288 __ret = __put_user((x), __hptr); \
289 unlock_user(__hptr, __gaddr, sizeof(target_type)); \
291 __ret = -TARGET_EFAULT; \
295 #define get_user(x, gaddr, target_type) \
297 abi_ulong __gaddr = (gaddr); \
298 target_type *__hptr; \
300 if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \
301 __ret = __get_user((x), __hptr); \
302 unlock_user(__hptr, __gaddr, 0); \
304 /* avoid warning */ \
306 __ret = -TARGET_EFAULT; \
311 #define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong)
312 #define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long)
313 #define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t)
314 #define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t)
315 #define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t)
316 #define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t)
317 #define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t)
318 #define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t)
319 #define put_user_u8(x, gaddr) put_user((x), (gaddr), uint8_t)
320 #define put_user_s8(x, gaddr) put_user((x), (gaddr), int8_t)
322 #define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong)
323 #define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long)
324 #define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t)
325 #define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t)
326 #define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t)
327 #define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t)
328 #define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t)
329 #define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t)
330 #define get_user_u8(x, gaddr) get_user((x), (gaddr), uint8_t)
331 #define get_user_s8(x, gaddr) get_user((x), (gaddr), int8_t)
333 /* copy_from_user() and copy_to_user() are usually used to copy data
334 * buffers between the target and host. These internally perform
335 * locking/unlocking of the memory.
337 abi_long
copy_from_user(void *hptr
, abi_ulong gaddr
, size_t len
);
338 abi_long
copy_to_user(abi_ulong gaddr
, void *hptr
, size_t len
);
340 /* Functions for accessing guest memory. The tget and tput functions
341 read/write single values, byteswapping as necessary. The lock_user function
342 gets a pointer to a contiguous area of guest memory, but does not perform
343 any byteswapping. lock_user may return either a pointer to the guest
344 memory, or a temporary buffer. */
346 /* Lock an area of guest memory into the host. If copy is true then the
347 host area will have the same contents as the guest. */
348 static inline void *lock_user(int type
, abi_ulong guest_addr
, long len
, int copy
)
350 if (!access_ok(type
, guest_addr
, len
))
355 addr
= g_malloc(len
);
357 memcpy(addr
, g2h_untagged(guest_addr
), len
);
359 memset(addr
, 0, len
);
363 return g2h_untagged(guest_addr
);
367 /* Unlock an area of guest memory. The first LEN bytes must be
368 flushed back to guest memory. host_ptr = NULL is explicitly
369 allowed and does nothing. */
370 static inline void unlock_user(void *host_ptr
, abi_ulong guest_addr
,
377 if (host_ptr
== g2h_untagged(guest_addr
))
380 memcpy(g2h_untagged(guest_addr
), host_ptr
, len
);
385 /* Return the length of a string in target memory or -TARGET_EFAULT if
387 abi_long
target_strlen(abi_ulong gaddr
);
389 /* Like lock_user but for null terminated strings. */
390 static inline void *lock_user_string(abi_ulong guest_addr
)
393 len
= target_strlen(guest_addr
);
396 return lock_user(VERIFY_READ
, guest_addr
, (long)(len
+ 1), 1);
399 /* Helper macros for locking/unlocking a target struct. */
400 #define lock_user_struct(type, host_ptr, guest_addr, copy) \
401 (host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy))
402 #define unlock_user_struct(host_ptr, guest_addr, copy) \
403 unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0)
405 #if defined(CONFIG_USE_NPTL)