12 #endif /* DEBUG_REMAP */
14 #include "qemu-types.h"
17 #include "syscall_defs.h"
19 #include "target_signal.h"
23 #define THREAD __thread
28 /* This struct is used to hold certain information about the image.
29 * Basically, it replicates in user space what would be certain
30 * task_struct fields in the kernel
43 abi_ulong start_stack
;
45 abi_ulong code_offset
;
46 abi_ulong data_offset
;
52 /* Information about the current linux thread */
53 struct vm86_saved_state
{
54 uint32_t eax
; /* return code */
64 uint16_t cs
, ss
, ds
, es
, fs
, gs
;
70 #include "nwfpe/fpa11.h"
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
;
96 #if defined(TARGET_I386) && !defined(TARGET_X86_64)
98 struct vm86_saved_state vm86_saved_regs
;
99 struct target_vm86plus_struct vm86plus
;
106 #if defined(TARGET_ARM) || defined(TARGET_M68K)
107 /* Extra fields for semihosted binaries. */
112 int used
; /* non zero if used */
113 struct image_info
*info
;
115 struct emulated_sigtable sigtab
[TARGET_NSIG
];
116 struct sigqueue sigqueue_table
[MAX_SIGQUEUE_SIZE
]; /* siginfo queue */
117 struct sigqueue
*first_free
; /* first free siginfo queue entry */
118 int signal_pending
; /* non zero if a signal may be pending */
121 } __attribute__((aligned(16))) TaskState
;
123 void init_task_state(TaskState
*ts
);
124 extern const char *qemu_uname_release
;
126 /* ??? See if we can avoid exposing so much of the loader internals. */
128 * MAX_ARG_PAGES defines the number of pages allocated for arguments
129 * and envelope for the new program. 32 should suffice, this gives
130 * a maximum env+arg of 128kB w/4KB pages!
132 #define MAX_ARG_PAGES 32
135 * This structure is used to hold the arguments that are
136 * used when loading binaries.
138 struct linux_binprm
{
140 void *page
[MAX_ARG_PAGES
];
147 char * filename
; /* Name of binary */
150 void do_init_thread(struct target_pt_regs
*regs
, struct image_info
*infop
);
151 abi_ulong
loader_build_argptr(int envc
, int argc
, abi_ulong sp
,
152 abi_ulong stringp
, int push_ptr
);
153 int loader_exec(const char * filename
, char ** argv
, char ** envp
,
154 struct target_pt_regs
* regs
, struct image_info
*infop
);
156 int load_elf_binary(struct linux_binprm
* bprm
, struct target_pt_regs
* regs
,
157 struct image_info
* info
);
158 int load_flt_binary(struct linux_binprm
* bprm
, struct target_pt_regs
* regs
,
159 struct image_info
* info
);
160 #ifdef TARGET_HAS_ELFLOAD32
161 int load_elf_binary_multi(struct linux_binprm
*bprm
,
162 struct target_pt_regs
*regs
,
163 struct image_info
*info
);
166 abi_long
memcpy_to_target(abi_ulong dest
, const void *src
,
168 void target_set_brk(abi_ulong new_brk
);
169 abi_long
do_brk(abi_ulong new_brk
);
170 void syscall_init(void);
171 abi_long
do_syscall(void *cpu_env
, int num
, abi_long arg1
,
172 abi_long arg2
, abi_long arg3
, abi_long arg4
,
173 abi_long arg5
, abi_long arg6
);
174 void gemu_log(const char *fmt
, ...) __attribute__((format(printf
,1,2)));
175 extern THREAD CPUState
*thread_env
;
176 void cpu_loop(CPUState
*env
);
177 void init_paths(const char *prefix
);
178 const char *path(const char *pathname
);
179 char *target_strerror(int err
);
180 int get_osversion(void);
181 void fork_start(void);
182 void fork_end(int child
);
184 #include "qemu-log.h"
187 void print_syscall(int num
,
188 abi_long arg1
, abi_long arg2
, abi_long arg3
,
189 abi_long arg4
, abi_long arg5
, abi_long arg6
);
190 void print_syscall_ret(int num
, abi_long arg1
);
191 extern int do_strace
;
194 void process_pending_signals(CPUState
*cpu_env
);
195 void signal_init(void);
196 int queue_signal(CPUState
*env
, int sig
, target_siginfo_t
*info
);
197 void host_to_target_siginfo(target_siginfo_t
*tinfo
, const siginfo_t
*info
);
198 void target_to_host_siginfo(siginfo_t
*info
, const target_siginfo_t
*tinfo
);
199 int target_to_host_signal(int sig
);
200 long do_sigreturn(CPUState
*env
);
201 long do_rt_sigreturn(CPUState
*env
);
202 abi_long
do_sigaltstack(abi_ulong uss_addr
, abi_ulong uoss_addr
, abi_ulong sp
);
206 void save_v86_state(CPUX86State
*env
);
207 void handle_vm86_trap(CPUX86State
*env
, int trapno
);
208 void handle_vm86_fault(CPUX86State
*env
);
209 int do_vm86(CPUX86State
*env
, long subfunction
, abi_ulong v86_addr
);
210 #elif defined(TARGET_SPARC64)
211 void sparc64_set_context(CPUSPARCState
*env
);
212 void sparc64_get_context(CPUSPARCState
*env
);
216 int target_mprotect(abi_ulong start
, abi_ulong len
, int prot
);
217 abi_long
target_mmap(abi_ulong start
, abi_ulong len
, int prot
,
218 int flags
, int fd
, abi_ulong offset
);
219 int target_munmap(abi_ulong start
, abi_ulong len
);
220 abi_long
target_mremap(abi_ulong old_addr
, abi_ulong old_size
,
221 abi_ulong new_size
, unsigned long flags
,
223 int target_msync(abi_ulong start
, abi_ulong len
, int flags
);
224 extern unsigned long last_brk
;
225 void mmap_lock(void);
226 void mmap_unlock(void);
227 #if defined(USE_NPTL)
228 void mmap_fork_start(void);
229 void mmap_fork_end(int child
);
233 extern unsigned long x86_stack_size
;
237 #define VERIFY_READ 0
238 #define VERIFY_WRITE 1 /* implies read access */
240 static inline int access_ok(int type
, abi_ulong addr
, abi_ulong size
)
242 return page_check_range((target_ulong
)addr
, size
,
243 (type
== VERIFY_READ
) ? PAGE_READ
: (PAGE_READ
| PAGE_WRITE
)) == 0;
246 /* NOTE __get_user and __put_user use host pointers and don't check access. */
247 /* These are usually used to access struct data members once the
248 * struct has been locked - usually with lock_user_struct().
250 #define __put_user(x, hptr)\
252 int size = sizeof(*hptr);\
255 *(uint8_t *)(hptr) = (uint8_t)(typeof(*hptr))(x);\
258 *(uint16_t *)(hptr) = tswap16((typeof(*hptr))(x));\
261 *(uint32_t *)(hptr) = tswap32((typeof(*hptr))(x));\
264 *(uint64_t *)(hptr) = tswap64((typeof(*hptr))(x));\
272 #define __get_user(x, hptr) \
274 int size = sizeof(*hptr);\
277 x = (typeof(*hptr))*(uint8_t *)(hptr);\
280 x = (typeof(*hptr))tswap16(*(uint16_t *)(hptr));\
283 x = (typeof(*hptr))tswap32(*(uint32_t *)(hptr));\
286 x = (typeof(*hptr))tswap64(*(uint64_t *)(hptr));\
296 /* put_user()/get_user() take a guest address and check access */
297 /* These are usually used to access an atomic data type, such as an int,
298 * that has been passed by address. These internally perform locking
299 * and unlocking on the data type.
301 #define put_user(x, gaddr, target_type) \
303 abi_ulong __gaddr = (gaddr); \
304 target_type *__hptr; \
306 if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \
307 __ret = __put_user((x), __hptr); \
308 unlock_user(__hptr, __gaddr, sizeof(target_type)); \
310 __ret = -TARGET_EFAULT; \
314 #define get_user(x, gaddr, target_type) \
316 abi_ulong __gaddr = (gaddr); \
317 target_type *__hptr; \
319 if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \
320 __ret = __get_user((x), __hptr); \
321 unlock_user(__hptr, __gaddr, 0); \
323 /* avoid warning */ \
325 __ret = -TARGET_EFAULT; \
330 #define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong)
331 #define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long)
332 #define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t)
333 #define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t)
334 #define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t)
335 #define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t)
336 #define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t)
337 #define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t)
338 #define put_user_u8(x, gaddr) put_user((x), (gaddr), uint8_t)
339 #define put_user_s8(x, gaddr) put_user((x), (gaddr), int8_t)
341 #define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong)
342 #define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long)
343 #define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t)
344 #define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t)
345 #define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t)
346 #define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t)
347 #define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t)
348 #define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t)
349 #define get_user_u8(x, gaddr) get_user((x), (gaddr), uint8_t)
350 #define get_user_s8(x, gaddr) get_user((x), (gaddr), int8_t)
352 /* copy_from_user() and copy_to_user() are usually used to copy data
353 * buffers between the target and host. These internally perform
354 * locking/unlocking of the memory.
356 abi_long
copy_from_user(void *hptr
, abi_ulong gaddr
, size_t len
);
357 abi_long
copy_to_user(abi_ulong gaddr
, void *hptr
, size_t len
);
359 /* Functions for accessing guest memory. The tget and tput functions
360 read/write single values, byteswapping as neccessary. The lock_user
361 gets a pointer to a contiguous area of guest memory, but does not perform
362 and byteswapping. lock_user may return either a pointer to the guest
363 memory, or a temporary buffer. */
365 /* Lock an area of guest memory into the host. If copy is true then the
366 host area will have the same contents as the guest. */
367 static inline void *lock_user(int type
, abi_ulong guest_addr
, long len
, int copy
)
369 if (!access_ok(type
, guest_addr
, len
))
376 memcpy(addr
, g2h(guest_addr
), len
);
378 memset(addr
, 0, len
);
382 return g2h(guest_addr
);
386 /* Unlock an area of guest memory. The first LEN bytes must be
387 flushed back to guest memory. host_ptr = NULL is explicitly
388 allowed and does nothing. */
389 static inline void unlock_user(void *host_ptr
, abi_ulong guest_addr
,
396 if (host_ptr
== g2h(guest_addr
))
399 memcpy(g2h(guest_addr
), host_ptr
, len
);
404 /* Return the length of a string in target memory or -TARGET_EFAULT if
406 abi_long
target_strlen(abi_ulong gaddr
);
408 /* Like lock_user but for null terminated strings. */
409 static inline void *lock_user_string(abi_ulong guest_addr
)
412 len
= target_strlen(guest_addr
);
415 return lock_user(VERIFY_READ
, guest_addr
, (long)(len
+ 1), 1);
418 /* Helper macros for locking/ulocking a target struct. */
419 #define lock_user_struct(type, host_ptr, guest_addr, copy) \
420 (host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy))
421 #define unlock_user_struct(host_ptr, guest_addr, copy) \
422 unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0)
424 #if defined(USE_NPTL)