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
45 abi_ulong start_stack;
46 abi_ulong stack_limit;
48 abi_ulong code_offset;
49 abi_ulong data_offset;
54 #ifdef CONFIG_USE_FDPIC
55 abi_ulong loadmap_addr;
58 abi_ulong pt_dynamic_addr;
59 struct image_info *other_info;
64 /* Information about the current linux thread */
65 struct vm86_saved_state {
66 uint32_t eax; /* return code */
76 uint16_t cs, ss, ds, es, fs, gs;
82 #include "nwfpe/fpa11.h"
85 #define MAX_SIGQUEUE_SIZE 1024
88 struct sigqueue *next;
89 target_siginfo_t info;
92 struct emulated_sigtable {
93 int pending; /* true if signal is pending */
94 struct sigqueue *first;
95 struct sigqueue info; /* in order to always have memory for the
96 first signal, we put it here */
99 /* NOTE: we force a big alignment so that the stack stored after is
101 typedef struct TaskState {
102 pid_t ts_tid; /* tid (or pid) of this task */
108 #ifdef TARGET_UNICORE32
111 #if defined(TARGET_I386) && !defined(TARGET_X86_64)
112 abi_ulong target_v86;
113 struct vm86_saved_state vm86_saved_regs;
114 struct target_vm86plus_struct vm86plus;
118 #ifdef CONFIG_USE_NPTL
119 abi_ulong child_tidptr;
124 #if defined(TARGET_ARM) || defined(TARGET_M68K) || defined(TARGET_UNICORE32)
125 /* Extra fields for semihosted binaries. */
130 int used; /* non zero if used */
131 struct image_info *info;
132 struct linux_binprm *bprm;
134 struct emulated_sigtable sigtab[TARGET_NSIG];
135 struct sigqueue sigqueue_table[MAX_SIGQUEUE_SIZE]; /* siginfo queue */
136 struct sigqueue *first_free; /* first free siginfo queue entry */
137 int signal_pending; /* non zero if a signal may be pending */
138 } __attribute__((aligned(16))) TaskState;
140 extern char *exec_path;
141 void init_task_state(TaskState *ts);
142 void task_settid(TaskState *);
143 void stop_all_tasks(void);
144 extern const char *qemu_uname_release;
145 extern unsigned long mmap_min_addr;
147 /* ??? See if we can avoid exposing so much of the loader internals. */
149 * MAX_ARG_PAGES defines the number of pages allocated for arguments
150 * and envelope for the new program. 32 should suffice, this gives
151 * a maximum env+arg of 128kB w/4KB pages!
153 #define MAX_ARG_PAGES 33
155 /* Read a good amount of data initially, to hopefully get all the
156 program headers loaded. */
157 #define BPRM_BUF_SIZE 1024
160 * This structure is used to hold the arguments that are
161 * used when loading binaries.
163 struct linux_binprm {
164 char buf[BPRM_BUF_SIZE] __attribute__((aligned));
165 void *page[MAX_ARG_PAGES];
172 char * filename; /* Name of binary */
173 int (*core_dump)(int, const CPUState *); /* coredump routine */
176 void do_init_thread(struct target_pt_regs *regs, struct image_info *infop);
177 abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp,
178 abi_ulong stringp, int push_ptr);
179 int loader_exec(const char * filename, char ** argv, char ** envp,
180 struct target_pt_regs * regs, struct image_info *infop,
181 struct linux_binprm *);
183 int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
184 struct image_info * info);
185 int load_flt_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
186 struct image_info * info);
188 abi_long memcpy_to_target(abi_ulong dest, const void *src,
190 void target_set_brk(abi_ulong new_brk);
191 abi_long do_brk(abi_ulong new_brk);
192 void syscall_init(void);
193 abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
194 abi_long arg2, abi_long arg3, abi_long arg4,
195 abi_long arg5, abi_long arg6);
196 void gemu_log(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
197 extern THREAD CPUState *thread_env;
198 void cpu_loop(CPUState *env);
199 char *target_strerror(int err);
200 int get_osversion(void);
201 void fork_start(void);
202 void fork_end(int child);
204 #include "qemu-log.h"
207 void print_syscall(int num,
208 abi_long arg1, abi_long arg2, abi_long arg3,
209 abi_long arg4, abi_long arg5, abi_long arg6);
210 void print_syscall_ret(int num, abi_long arg1);
211 extern int do_strace;
214 void process_pending_signals(CPUState *cpu_env);
215 void signal_init(void);
216 int queue_signal(CPUState *env, int sig, target_siginfo_t *info);
217 void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info);
218 void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo);
219 int target_to_host_signal(int sig);
220 int host_to_target_signal(int sig);
221 long do_sigreturn(CPUState *env);
222 long do_rt_sigreturn(CPUState *env);
223 abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp);
227 void save_v86_state(CPUX86State *env);
228 void handle_vm86_trap(CPUX86State *env, int trapno);
229 void handle_vm86_fault(CPUX86State *env);
230 int do_vm86(CPUX86State *env, long subfunction, abi_ulong v86_addr);
231 #elif defined(TARGET_SPARC64)
232 void sparc64_set_context(CPUSPARCState *env);
233 void sparc64_get_context(CPUSPARCState *env);
237 int target_mprotect(abi_ulong start, abi_ulong len, int prot);
238 abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
239 int flags, int fd, abi_ulong offset);
240 int target_munmap(abi_ulong start, abi_ulong len);
241 abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size,
242 abi_ulong new_size, unsigned long flags,
244 int target_msync(abi_ulong start, abi_ulong len, int flags);
245 extern unsigned long last_brk;
246 void mmap_lock(void);
247 void mmap_unlock(void);
248 abi_ulong mmap_find_vma(abi_ulong, abi_ulong);
249 void cpu_list_lock(void);
250 void cpu_list_unlock(void);
251 #if defined(CONFIG_USE_NPTL)
252 void mmap_fork_start(void);
253 void mmap_fork_end(int child);
257 extern unsigned long guest_stack_size;
261 #define VERIFY_READ 0
262 #define VERIFY_WRITE 1 /* implies read access */
264 static inline int access_ok(int type, abi_ulong addr, abi_ulong size)
266 return page_check_range((target_ulong)addr, size,
267 (type == VERIFY_READ) ? PAGE_READ : (PAGE_READ | PAGE_WRITE)) == 0;
270 /* NOTE __get_user and __put_user use host pointers and don't check access. */
271 /* These are usually used to access struct data members once the
272 * struct has been locked - usually with lock_user_struct().
274 #define __put_user(x, hptr)\
276 switch(sizeof(*hptr)) {\
278 *(uint8_t *)(hptr) = (uint8_t)(typeof(*hptr))(x);\
281 *(uint16_t *)(hptr) = tswap16((uint16_t)(typeof(*hptr))(x));\
284 *(uint32_t *)(hptr) = tswap32((uint32_t)(typeof(*hptr))(x));\
287 *(uint64_t *)(hptr) = tswap64((typeof(*hptr))(x));\
295 #define __get_user(x, hptr) \
297 switch(sizeof(*hptr)) {\
299 x = (typeof(*hptr))*(uint8_t *)(hptr);\
302 x = (typeof(*hptr))tswap16(*(uint16_t *)(hptr));\
305 x = (typeof(*hptr))tswap32(*(uint32_t *)(hptr));\
308 x = (typeof(*hptr))tswap64(*(uint64_t *)(hptr));\
318 /* put_user()/get_user() take a guest address and check access */
319 /* These are usually used to access an atomic data type, such as an int,
320 * that has been passed by address. These internally perform locking
321 * and unlocking on the data type.
323 #define put_user(x, gaddr, target_type) \
325 abi_ulong __gaddr = (gaddr); \
326 target_type *__hptr; \
328 if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \
329 __ret = __put_user((x), __hptr); \
330 unlock_user(__hptr, __gaddr, sizeof(target_type)); \
332 __ret = -TARGET_EFAULT; \
336 #define get_user(x, gaddr, target_type) \
338 abi_ulong __gaddr = (gaddr); \
339 target_type *__hptr; \
341 if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \
342 __ret = __get_user((x), __hptr); \
343 unlock_user(__hptr, __gaddr, 0); \
345 /* avoid warning */ \
347 __ret = -TARGET_EFAULT; \
352 #define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong)
353 #define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long)
354 #define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t)
355 #define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t)
356 #define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t)
357 #define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t)
358 #define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t)
359 #define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t)
360 #define put_user_u8(x, gaddr) put_user((x), (gaddr), uint8_t)
361 #define put_user_s8(x, gaddr) put_user((x), (gaddr), int8_t)
363 #define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong)
364 #define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long)
365 #define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t)
366 #define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t)
367 #define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t)
368 #define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t)
369 #define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t)
370 #define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t)
371 #define get_user_u8(x, gaddr) get_user((x), (gaddr), uint8_t)
372 #define get_user_s8(x, gaddr) get_user((x), (gaddr), int8_t)
374 /* copy_from_user() and copy_to_user() are usually used to copy data
375 * buffers between the target and host. These internally perform
376 * locking/unlocking of the memory.
378 abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len);
379 abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len);
381 /* Functions for accessing guest memory. The tget and tput functions
382 read/write single values, byteswapping as necessary. The lock_user
383 gets a pointer to a contiguous area of guest memory, but does not perform
384 and byteswapping. lock_user may return either a pointer to the guest
385 memory, or a temporary buffer. */
387 /* Lock an area of guest memory into the host. If copy is true then the
388 host area will have the same contents as the guest. */
389 static inline void *lock_user(int type, abi_ulong guest_addr, long len, int copy)
391 if (!access_ok(type, guest_addr, len))
398 memcpy(addr, g2h(guest_addr), len);
400 memset(addr, 0, len);
404 return g2h(guest_addr);
408 /* Unlock an area of guest memory. The first LEN bytes must be
409 flushed back to guest memory. host_ptr = NULL is explicitly
410 allowed and does nothing. */
411 static inline void unlock_user(void *host_ptr, abi_ulong guest_addr,
418 if (host_ptr == g2h(guest_addr))
421 memcpy(g2h(guest_addr), host_ptr, len);
426 /* Return the length of a string in target memory or -TARGET_EFAULT if
428 abi_long target_strlen(abi_ulong gaddr);
430 /* Like lock_user but for null terminated strings. */
431 static inline void *lock_user_string(abi_ulong guest_addr)
434 len = target_strlen(guest_addr);
437 return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1);
440 /* Helper macros for locking/ulocking a target struct. */
441 #define lock_user_struct(type, host_ptr, guest_addr, copy) \
442 (host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy))
443 #define unlock_user_struct(host_ptr, guest_addr, copy) \
444 unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0)
446 #if defined(CONFIG_USE_NPTL)