12 #endif /* DEBUG_REMAP */
14 #include "qemu-types.h"
17 #include "syscall_defs.h"
19 #include "target_signal.h"
21 #include "qemu-queue.h"
23 #if defined(CONFIG_USE_NPTL)
24 #define THREAD __thread
29 /* This struct is used to hold certain information about the image.
30 * Basically, it replicates in user space what would be certain
31 * task_struct fields in the kernel
44 abi_ulong start_stack;
46 abi_ulong code_offset;
47 abi_ulong data_offset;
56 /* Information about the current linux thread */
57 struct vm86_saved_state {
58 uint32_t eax; /* return code */
68 uint16_t cs, ss, ds, es, fs, gs;
74 #include "nwfpe/fpa11.h"
77 #define MAX_SIGQUEUE_SIZE 1024
80 struct sigqueue *next;
81 target_siginfo_t info;
84 struct emulated_sigtable {
85 int pending; /* true if signal is pending */
86 struct sigqueue *first;
87 struct sigqueue info; /* in order to always have memory for the
88 first signal, we put it here */
91 /* NOTE: we force a big alignment so that the stack stored after is
93 typedef struct TaskState {
94 pid_t ts_tid; /* tid (or pid) of this task */
100 #if defined(TARGET_I386) && !defined(TARGET_X86_64)
101 abi_ulong target_v86;
102 struct vm86_saved_state vm86_saved_regs;
103 struct target_vm86plus_struct vm86plus;
107 #ifdef CONFIG_USE_NPTL
108 abi_ulong child_tidptr;
113 #if defined(TARGET_ARM) || defined(TARGET_M68K)
114 /* Extra fields for semihosted binaries. */
119 int used; /* non zero if used */
120 struct image_info *info;
121 struct linux_binprm *bprm;
123 struct emulated_sigtable sigtab[TARGET_NSIG];
124 struct sigqueue sigqueue_table[MAX_SIGQUEUE_SIZE]; /* siginfo queue */
125 struct sigqueue *first_free; /* first free siginfo queue entry */
126 int signal_pending; /* non zero if a signal may be pending */
129 } __attribute__((aligned(16))) TaskState;
131 extern char *exec_path;
132 void init_task_state(TaskState *ts);
133 void task_settid(TaskState *);
134 void stop_all_tasks(void);
135 extern const char *qemu_uname_release;
136 #if defined(CONFIG_USE_GUEST_BASE)
137 extern unsigned long mmap_min_addr;
140 /* ??? See if we can avoid exposing so much of the loader internals. */
142 * MAX_ARG_PAGES defines the number of pages allocated for arguments
143 * and envelope for the new program. 32 should suffice, this gives
144 * a maximum env+arg of 128kB w/4KB pages!
146 #define MAX_ARG_PAGES 33
149 * This structure is used to hold the arguments that are
150 * used when loading binaries.
152 struct linux_binprm {
154 void *page[MAX_ARG_PAGES];
161 char * filename; /* Name of binary */
162 int (*core_dump)(int, const CPUState *); /* coredump routine */
165 void do_init_thread(struct target_pt_regs *regs, struct image_info *infop);
166 abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp,
167 abi_ulong stringp, int push_ptr);
168 int loader_exec(const char * filename, char ** argv, char ** envp,
169 struct target_pt_regs * regs, struct image_info *infop,
170 struct linux_binprm *);
172 int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
173 struct image_info * info);
174 int load_flt_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
175 struct image_info * info);
176 #ifdef TARGET_HAS_ELFLOAD32
177 int load_elf_binary_multi(struct linux_binprm *bprm,
178 struct target_pt_regs *regs,
179 struct image_info *info);
182 abi_long memcpy_to_target(abi_ulong dest, const void *src,
184 void target_set_brk(abi_ulong new_brk);
185 abi_long do_brk(abi_ulong new_brk);
186 void syscall_init(void);
187 abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
188 abi_long arg2, abi_long arg3, abi_long arg4,
189 abi_long arg5, abi_long arg6);
190 void gemu_log(const char *fmt, ...) __attribute__((format(printf,1,2)));
191 extern THREAD CPUState *thread_env;
192 void cpu_loop(CPUState *env);
193 char *target_strerror(int err);
194 int get_osversion(void);
195 void fork_start(void);
196 void fork_end(int child);
198 #include "qemu-log.h"
201 void print_syscall(int num,
202 abi_long arg1, abi_long arg2, abi_long arg3,
203 abi_long arg4, abi_long arg5, abi_long arg6);
204 void print_syscall_ret(int num, abi_long arg1);
205 extern int do_strace;
208 void process_pending_signals(CPUState *cpu_env);
209 void signal_init(void);
210 int queue_signal(CPUState *env, int sig, target_siginfo_t *info);
211 void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info);
212 void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo);
213 int target_to_host_signal(int sig);
214 int host_to_target_signal(int sig);
215 long do_sigreturn(CPUState *env);
216 long do_rt_sigreturn(CPUState *env);
217 abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp);
221 void save_v86_state(CPUX86State *env);
222 void handle_vm86_trap(CPUX86State *env, int trapno);
223 void handle_vm86_fault(CPUX86State *env);
224 int do_vm86(CPUX86State *env, long subfunction, abi_ulong v86_addr);
225 #elif defined(TARGET_SPARC64)
226 void sparc64_set_context(CPUSPARCState *env);
227 void sparc64_get_context(CPUSPARCState *env);
231 int target_mprotect(abi_ulong start, abi_ulong len, int prot);
232 abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
233 int flags, int fd, abi_ulong offset);
234 int target_munmap(abi_ulong start, abi_ulong len);
235 abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size,
236 abi_ulong new_size, unsigned long flags,
238 int target_msync(abi_ulong start, abi_ulong len, int flags);
239 extern unsigned long last_brk;
240 void mmap_lock(void);
241 void mmap_unlock(void);
242 abi_ulong mmap_find_vma(abi_ulong, abi_ulong);
243 void cpu_list_lock(void);
244 void cpu_list_unlock(void);
245 #if defined(CONFIG_USE_NPTL)
246 void mmap_fork_start(void);
247 void mmap_fork_end(int child);
251 extern unsigned long x86_stack_size;
255 #define VERIFY_READ 0
256 #define VERIFY_WRITE 1 /* implies read access */
258 static inline int access_ok(int type, abi_ulong addr, abi_ulong size)
260 return page_check_range((target_ulong)addr, size,
261 (type == VERIFY_READ) ? PAGE_READ : (PAGE_READ | PAGE_WRITE)) == 0;
264 /* NOTE __get_user and __put_user use host pointers and don't check access. */
265 /* These are usually used to access struct data members once the
266 * struct has been locked - usually with lock_user_struct().
268 #define __put_user(x, hptr)\
270 int size = sizeof(*hptr);\
273 *(uint8_t *)(hptr) = (uint8_t)(typeof(*hptr))(x);\
276 *(uint16_t *)(hptr) = tswap16((uint16_t)(typeof(*hptr))(x));\
279 *(uint32_t *)(hptr) = tswap32((uint32_t)(typeof(*hptr))(x));\
282 *(uint64_t *)(hptr) = tswap64((typeof(*hptr))(x));\
290 #define __get_user(x, hptr) \
292 int size = sizeof(*hptr);\
295 x = (typeof(*hptr))*(uint8_t *)(hptr);\
298 x = (typeof(*hptr))tswap16(*(uint16_t *)(hptr));\
301 x = (typeof(*hptr))tswap32(*(uint32_t *)(hptr));\
304 x = (typeof(*hptr))tswap64(*(uint64_t *)(hptr));\
314 /* put_user()/get_user() take a guest address and check access */
315 /* These are usually used to access an atomic data type, such as an int,
316 * that has been passed by address. These internally perform locking
317 * and unlocking on the data type.
319 #define put_user(x, gaddr, target_type) \
321 abi_ulong __gaddr = (gaddr); \
322 target_type *__hptr; \
324 if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \
325 __ret = __put_user((x), __hptr); \
326 unlock_user(__hptr, __gaddr, sizeof(target_type)); \
328 __ret = -TARGET_EFAULT; \
332 #define get_user(x, gaddr, target_type) \
334 abi_ulong __gaddr = (gaddr); \
335 target_type *__hptr; \
337 if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \
338 __ret = __get_user((x), __hptr); \
339 unlock_user(__hptr, __gaddr, 0); \
341 /* avoid warning */ \
343 __ret = -TARGET_EFAULT; \
348 #define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong)
349 #define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long)
350 #define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t)
351 #define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t)
352 #define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t)
353 #define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t)
354 #define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t)
355 #define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t)
356 #define put_user_u8(x, gaddr) put_user((x), (gaddr), uint8_t)
357 #define put_user_s8(x, gaddr) put_user((x), (gaddr), int8_t)
359 #define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong)
360 #define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long)
361 #define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t)
362 #define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t)
363 #define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t)
364 #define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t)
365 #define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t)
366 #define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t)
367 #define get_user_u8(x, gaddr) get_user((x), (gaddr), uint8_t)
368 #define get_user_s8(x, gaddr) get_user((x), (gaddr), int8_t)
370 /* copy_from_user() and copy_to_user() are usually used to copy data
371 * buffers between the target and host. These internally perform
372 * locking/unlocking of the memory.
374 abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len);
375 abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len);
377 /* Functions for accessing guest memory. The tget and tput functions
378 read/write single values, byteswapping as neccessary. The lock_user
379 gets a pointer to a contiguous area of guest memory, but does not perform
380 and byteswapping. lock_user may return either a pointer to the guest
381 memory, or a temporary buffer. */
383 /* Lock an area of guest memory into the host. If copy is true then the
384 host area will have the same contents as the guest. */
385 static inline void *lock_user(int type, abi_ulong guest_addr, long len, int copy)
387 if (!access_ok(type, guest_addr, len))
394 memcpy(addr, g2h(guest_addr), len);
396 memset(addr, 0, len);
400 return g2h(guest_addr);
404 /* Unlock an area of guest memory. The first LEN bytes must be
405 flushed back to guest memory. host_ptr = NULL is explicitly
406 allowed and does nothing. */
407 static inline void unlock_user(void *host_ptr, abi_ulong guest_addr,
414 if (host_ptr == g2h(guest_addr))
417 memcpy(g2h(guest_addr), host_ptr, len);
422 /* Return the length of a string in target memory or -TARGET_EFAULT if
424 abi_long target_strlen(abi_ulong gaddr);
426 /* Like lock_user but for null terminated strings. */
427 static inline void *lock_user_string(abi_ulong guest_addr)
430 len = target_strlen(guest_addr);
433 return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1);
436 /* Helper macros for locking/ulocking a target struct. */
437 #define lock_user_struct(type, host_ptr, guest_addr, copy) \
438 (host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy))
439 #define unlock_user_struct(host_ptr, guest_addr, copy) \
440 unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0)
442 #if defined(CONFIG_USE_NPTL)