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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
51 * This struct is used to hold certain information about the image. Basically,
52 * it replicates in user space what would be certain task_struct fields in the
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
;
79 struct emulated_sigtable
{
80 int pending
; /* true if signal is pending */
81 struct sigqueue
*first
;
82 /* in order to always have memory for the first signal, we put it here */
87 * NOTE: we force a big alignment so that the stack stored after is aligned too
89 typedef struct TaskState
{
90 pid_t ts_tid
; /* tid (or pid) of this task */
92 struct TaskState
*next
;
93 int used
; /* non zero if used */
94 struct image_info
*info
;
96 struct emulated_sigtable sigtab
[TARGET_NSIG
];
97 struct sigqueue sigqueue_table
[MAX_SIGQUEUE_SIZE
]; /* siginfo queue */
98 struct sigqueue
*first_free
; /* first free siginfo queue entry */
99 int signal_pending
; /* non zero if a signal may be pending */
102 } __attribute__((aligned(16))) TaskState
;
104 void init_task_state(TaskState
*ts
);
105 extern const char *qemu_uname_release
;
106 extern unsigned long mmap_min_addr
;
109 * MAX_ARG_PAGES defines the number of pages allocated for arguments
110 * and envelope for the new program. 32 should suffice, this gives
111 * a maximum env+arg of 128kB w/4KB pages!
113 #define MAX_ARG_PAGES 32
116 * This structure is used to hold the arguments that are
117 * used when loading binaries.
119 struct linux_binprm
{
121 void *page
[MAX_ARG_PAGES
];
128 char *filename
; /* Name of binary */
131 void do_init_thread(struct target_pt_regs
*regs
, struct image_info
*infop
);
132 abi_ulong
loader_build_argptr(int envc
, int argc
, abi_ulong sp
,
133 abi_ulong stringp
, int push_ptr
);
134 int loader_exec(const char *filename
, char **argv
, char **envp
,
135 struct target_pt_regs
*regs
, struct image_info
*infop
);
137 int load_elf_binary(struct linux_binprm
*bprm
, struct target_pt_regs
*regs
,
138 struct image_info
*info
);
139 int load_flt_binary(struct linux_binprm
*bprm
, struct target_pt_regs
*regs
,
140 struct image_info
*info
);
142 abi_long
memcpy_to_target(abi_ulong dest
, const void *src
,
144 void target_set_brk(abi_ulong new_brk
);
145 abi_long
do_brk(abi_ulong new_brk
);
146 void syscall_init(void);
147 abi_long
do_freebsd_syscall(void *cpu_env
, int num
, abi_long arg1
,
148 abi_long arg2
, abi_long arg3
, abi_long arg4
,
149 abi_long arg5
, abi_long arg6
, abi_long arg7
,
151 abi_long
do_netbsd_syscall(void *cpu_env
, int num
, abi_long arg1
,
152 abi_long arg2
, abi_long arg3
, abi_long arg4
,
153 abi_long arg5
, abi_long arg6
);
154 abi_long
do_openbsd_syscall(void *cpu_env
, int num
, abi_long arg1
,
155 abi_long arg2
, abi_long arg3
, abi_long arg4
,
156 abi_long arg5
, abi_long arg6
);
157 void gemu_log(const char *fmt
, ...) GCC_FMT_ATTR(1, 2);
158 extern THREAD CPUState
*thread_cpu
;
159 void cpu_loop(CPUArchState
*env
);
160 char *target_strerror(int err
);
161 int get_osversion(void);
162 void fork_start(void);
163 void fork_end(int child
);
165 #include "qemu/log.h"
172 void (*call
)(const struct syscallname
*,
173 abi_long
, abi_long
, abi_long
,
174 abi_long
, abi_long
, abi_long
);
175 void (*result
)(const struct syscallname
*, abi_long
);
179 print_freebsd_syscall(int num
,
180 abi_long arg1
, abi_long arg2
, abi_long arg3
,
181 abi_long arg4
, abi_long arg5
, abi_long arg6
);
182 void print_freebsd_syscall_ret(int num
, abi_long ret
);
184 print_netbsd_syscall(int num
,
185 abi_long arg1
, abi_long arg2
, abi_long arg3
,
186 abi_long arg4
, abi_long arg5
, abi_long arg6
);
187 void print_netbsd_syscall_ret(int num
, abi_long ret
);
189 print_openbsd_syscall(int num
,
190 abi_long arg1
, abi_long arg2
, abi_long arg3
,
191 abi_long arg4
, abi_long arg5
, abi_long arg6
);
192 void print_openbsd_syscall_ret(int num
, abi_long ret
);
193 extern int do_strace
;
196 void process_pending_signals(CPUArchState
*cpu_env
);
197 void signal_init(void);
198 long do_sigreturn(CPUArchState
*env
);
199 long do_rt_sigreturn(CPUArchState
*env
);
200 abi_long
do_sigaltstack(abi_ulong uss_addr
, abi_ulong uoss_addr
, abi_ulong sp
);
203 int target_mprotect(abi_ulong start
, abi_ulong len
, int prot
);
204 abi_long
target_mmap(abi_ulong start
, abi_ulong len
, int prot
,
205 int flags
, int fd
, abi_ulong offset
);
206 int target_munmap(abi_ulong start
, abi_ulong len
);
207 abi_long
target_mremap(abi_ulong old_addr
, abi_ulong old_size
,
208 abi_ulong new_size
, unsigned long flags
,
210 int target_msync(abi_ulong start
, abi_ulong len
, int flags
);
211 extern unsigned long last_brk
;
212 void mmap_fork_start(void);
213 void mmap_fork_end(int child
);
216 extern unsigned long x86_stack_size
;
220 #define VERIFY_READ PAGE_READ
221 #define VERIFY_WRITE (PAGE_READ | PAGE_WRITE)
223 static inline bool access_ok(int type
, abi_ulong addr
, abi_ulong size
)
225 return page_check_range((target_ulong
)addr
, size
, type
) == 0;
229 * NOTE __get_user and __put_user use host pointers and don't check access.
231 * These are usually used to access struct data members once the struct has been
232 * locked - usually with lock_user_struct().
234 #define __put_user(x, hptr)\
236 int size = sizeof(*hptr);\
239 *(uint8_t *)(hptr) = (uint8_t)(typeof(*hptr))(x);\
242 *(uint16_t *)(hptr) = tswap16((typeof(*hptr))(x));\
245 *(uint32_t *)(hptr) = tswap32((typeof(*hptr))(x));\
248 *(uint64_t *)(hptr) = tswap64((typeof(*hptr))(x));\
256 #define __get_user(x, hptr) \
258 int size = sizeof(*hptr);\
261 x = (typeof(*hptr))*(uint8_t *)(hptr);\
264 x = (typeof(*hptr))tswap16(*(uint16_t *)(hptr));\
267 x = (typeof(*hptr))tswap32(*(uint32_t *)(hptr));\
270 x = (typeof(*hptr))tswap64(*(uint64_t *)(hptr));\
280 * put_user()/get_user() take a guest address and check access
282 * These are usually used to access an atomic data type, such as an int, that
283 * has been passed by address. These internally perform locking and unlocking
286 #define put_user(x, gaddr, target_type) \
288 abi_ulong __gaddr = (gaddr); \
289 target_type *__hptr; \
291 if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \
292 __ret = __put_user((x), __hptr); \
293 unlock_user(__hptr, __gaddr, sizeof(target_type)); \
295 __ret = -TARGET_EFAULT; \
299 #define get_user(x, gaddr, target_type) \
301 abi_ulong __gaddr = (gaddr); \
302 target_type *__hptr; \
304 if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \
305 __ret = __get_user((x), __hptr); \
306 unlock_user(__hptr, __gaddr, 0); \
309 __ret = -TARGET_EFAULT; \
314 #define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong)
315 #define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long)
316 #define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t)
317 #define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t)
318 #define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t)
319 #define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t)
320 #define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t)
321 #define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t)
322 #define put_user_u8(x, gaddr) put_user((x), (gaddr), uint8_t)
323 #define put_user_s8(x, gaddr) put_user((x), (gaddr), int8_t)
325 #define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong)
326 #define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long)
327 #define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t)
328 #define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t)
329 #define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t)
330 #define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t)
331 #define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t)
332 #define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t)
333 #define get_user_u8(x, gaddr) get_user((x), (gaddr), uint8_t)
334 #define get_user_s8(x, gaddr) get_user((x), (gaddr), int8_t)
337 * copy_from_user() and copy_to_user() are usually used to copy data
338 * buffers between the target and host. These internally perform
339 * locking/unlocking of the memory.
341 abi_long
copy_from_user(void *hptr
, abi_ulong gaddr
, size_t len
);
342 abi_long
copy_to_user(abi_ulong gaddr
, void *hptr
, size_t len
);
345 * Functions for accessing guest memory. The tget and tput functions
346 * read/write single values, byteswapping as necessary. The lock_user function
347 * gets a pointer to a contiguous area of guest memory, but does not perform
348 * any byteswapping. lock_user may return either a pointer to the guest
349 * memory, or a temporary buffer.
353 * Lock an area of guest memory into the host. If copy is true then the
354 * host area will have the same contents as the guest.
356 static inline void *lock_user(int type
, abi_ulong guest_addr
, long len
,
359 if (!access_ok(type
, guest_addr
, len
))
364 addr
= g_malloc(len
);
366 memcpy(addr
, g2h_untagged(guest_addr
), len
);
368 memset(addr
, 0, len
);
372 return g2h_untagged(guest_addr
);
377 * Unlock an area of guest memory. The first LEN bytes must be flushed back to
378 * guest memory. host_ptr = NULL is explicitly allowed and does nothing.
380 static inline void unlock_user(void *host_ptr
, abi_ulong guest_addr
,
387 if (host_ptr
== g2h_untagged(guest_addr
))
390 memcpy(g2h_untagged(guest_addr
), host_ptr
, len
);
396 * Return the length of a string in target memory or -TARGET_EFAULT if access
399 abi_long
target_strlen(abi_ulong gaddr
);
401 /* Like lock_user but for null terminated strings. */
402 static inline void *lock_user_string(abi_ulong guest_addr
)
405 len
= target_strlen(guest_addr
);
408 return lock_user(VERIFY_READ
, guest_addr
, (long)(len
+ 1), 1);
411 /* Helper macros for locking/unlocking a target struct. */
412 #define lock_user_struct(type, host_ptr, guest_addr, copy) \
413 (host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy))
414 #define unlock_user_struct(host_ptr, guest_addr, copy) \
415 unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0)
417 #if defined(CONFIG_USE_NPTL)