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;
55 /* Information about the current linux thread */
56 struct vm86_saved_state {
57 uint32_t eax; /* return code */
67 uint16_t cs, ss, ds, es, fs, gs;
73 #include "nwfpe/fpa11.h"
76 #define MAX_SIGQUEUE_SIZE 1024
79 struct sigqueue *next;
80 target_siginfo_t info;
83 struct emulated_sigtable {
84 int pending; /* true if signal is pending */
85 struct sigqueue *first;
86 struct sigqueue info; /* in order to always have memory for the
87 first signal, we put it here */
90 /* NOTE: we force a big alignment so that the stack stored after is
92 typedef struct TaskState {
93 struct TaskState *next;
99 #if defined(TARGET_I386) && !defined(TARGET_X86_64)
100 abi_ulong target_v86;
101 struct vm86_saved_state vm86_saved_regs;
102 struct target_vm86plus_struct vm86plus;
107 abi_ulong child_tidptr;
112 #if defined(TARGET_ARM) || defined(TARGET_M68K)
113 /* Extra fields for semihosted binaries. */
118 int used; /* non zero if used */
119 struct image_info *info;
120 struct linux_binprm *bprm;
122 struct emulated_sigtable sigtab[TARGET_NSIG];
123 struct sigqueue sigqueue_table[MAX_SIGQUEUE_SIZE]; /* siginfo queue */
124 struct sigqueue *first_free; /* first free siginfo queue entry */
125 int signal_pending; /* non zero if a signal may be pending */
128 } __attribute__((aligned(16))) TaskState;
130 extern const char *exec_path;
131 void init_task_state(TaskState *ts);
132 extern const char *qemu_uname_release;
133 #if defined(CONFIG_USE_GUEST_BASE)
134 extern unsigned long mmap_min_addr;
137 /* ??? See if we can avoid exposing so much of the loader internals. */
139 * MAX_ARG_PAGES defines the number of pages allocated for arguments
140 * and envelope for the new program. 32 should suffice, this gives
141 * a maximum env+arg of 128kB w/4KB pages!
143 #define MAX_ARG_PAGES 32
146 * This structure is used to hold the arguments that are
147 * used when loading binaries.
149 struct linux_binprm {
151 void *page[MAX_ARG_PAGES];
158 char * filename; /* Name of binary */
159 int (*core_dump)(int, const CPUState *); /* coredump routine */
162 void do_init_thread(struct target_pt_regs *regs, struct image_info *infop);
163 abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp,
164 abi_ulong stringp, int push_ptr);
165 int loader_exec(const char * filename, char ** argv, char ** envp,
166 struct target_pt_regs * regs, struct image_info *infop,
167 struct linux_binprm *);
169 int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
170 struct image_info * info);
171 int load_flt_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
172 struct image_info * info);
173 #ifdef TARGET_HAS_ELFLOAD32
174 int load_elf_binary_multi(struct linux_binprm *bprm,
175 struct target_pt_regs *regs,
176 struct image_info *info);
179 abi_long memcpy_to_target(abi_ulong dest, const void *src,
181 void target_set_brk(abi_ulong new_brk);
182 abi_long do_brk(abi_ulong new_brk);
183 void syscall_init(void);
184 abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
185 abi_long arg2, abi_long arg3, abi_long arg4,
186 abi_long arg5, abi_long arg6);
187 void gemu_log(const char *fmt, ...) __attribute__((format(printf,1,2)));
188 extern THREAD CPUState *thread_env;
189 void cpu_loop(CPUState *env);
190 void init_paths(const char *prefix);
191 const char *path(const char *pathname);
192 char *target_strerror(int err);
193 int get_osversion(void);
194 void fork_start(void);
195 void fork_end(int child);
197 #include "qemu-log.h"
200 void print_syscall(int num,
201 abi_long arg1, abi_long arg2, abi_long arg3,
202 abi_long arg4, abi_long arg5, abi_long arg6);
203 void print_syscall_ret(int num, abi_long arg1);
204 extern int do_strace;
207 void process_pending_signals(CPUState *cpu_env);
208 void signal_init(void);
209 int queue_signal(CPUState *env, int sig, target_siginfo_t *info);
210 void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info);
211 void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo);
212 int target_to_host_signal(int sig);
213 long do_sigreturn(CPUState *env);
214 long do_rt_sigreturn(CPUState *env);
215 abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp);
219 void save_v86_state(CPUX86State *env);
220 void handle_vm86_trap(CPUX86State *env, int trapno);
221 void handle_vm86_fault(CPUX86State *env);
222 int do_vm86(CPUX86State *env, long subfunction, abi_ulong v86_addr);
223 #elif defined(TARGET_SPARC64)
224 void sparc64_set_context(CPUSPARCState *env);
225 void sparc64_get_context(CPUSPARCState *env);
229 int target_mprotect(abi_ulong start, abi_ulong len, int prot);
230 abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
231 int flags, int fd, abi_ulong offset);
232 int target_munmap(abi_ulong start, abi_ulong len);
233 abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size,
234 abi_ulong new_size, unsigned long flags,
236 int target_msync(abi_ulong start, abi_ulong len, int flags);
237 extern unsigned long last_brk;
238 void mmap_lock(void);
239 void mmap_unlock(void);
240 void cpu_list_lock(void);
241 void cpu_list_unlock(void);
242 #if defined(USE_NPTL)
243 void mmap_fork_start(void);
244 void mmap_fork_end(int child);
248 extern unsigned long x86_stack_size;
252 #define VERIFY_READ 0
253 #define VERIFY_WRITE 1 /* implies read access */
255 static inline int access_ok(int type, abi_ulong addr, abi_ulong size)
257 return page_check_range((target_ulong)addr, size,
258 (type == VERIFY_READ) ? PAGE_READ : (PAGE_READ | PAGE_WRITE)) == 0;
261 /* NOTE __get_user and __put_user use host pointers and don't check access. */
262 /* These are usually used to access struct data members once the
263 * struct has been locked - usually with lock_user_struct().
265 #define __put_user(x, hptr)\
267 int size = sizeof(*hptr);\
270 *(uint8_t *)(hptr) = (uint8_t)(typeof(*hptr))(x);\
273 *(uint16_t *)(hptr) = tswap16((typeof(*hptr))(x));\
276 *(uint32_t *)(hptr) = tswap32((typeof(*hptr))(x));\
279 *(uint64_t *)(hptr) = tswap64((typeof(*hptr))(x));\
287 #define __get_user(x, hptr) \
289 int size = sizeof(*hptr);\
292 x = (typeof(*hptr))*(uint8_t *)(hptr);\
295 x = (typeof(*hptr))tswap16(*(uint16_t *)(hptr));\
298 x = (typeof(*hptr))tswap32(*(uint32_t *)(hptr));\
301 x = (typeof(*hptr))tswap64(*(uint64_t *)(hptr));\
311 /* put_user()/get_user() take a guest address and check access */
312 /* These are usually used to access an atomic data type, such as an int,
313 * that has been passed by address. These internally perform locking
314 * and unlocking on the data type.
316 #define put_user(x, gaddr, target_type) \
318 abi_ulong __gaddr = (gaddr); \
319 target_type *__hptr; \
321 if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \
322 __ret = __put_user((x), __hptr); \
323 unlock_user(__hptr, __gaddr, sizeof(target_type)); \
325 __ret = -TARGET_EFAULT; \
329 #define get_user(x, gaddr, target_type) \
331 abi_ulong __gaddr = (gaddr); \
332 target_type *__hptr; \
334 if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \
335 __ret = __get_user((x), __hptr); \
336 unlock_user(__hptr, __gaddr, 0); \
338 /* avoid warning */ \
340 __ret = -TARGET_EFAULT; \
345 #define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong)
346 #define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long)
347 #define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t)
348 #define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t)
349 #define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t)
350 #define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t)
351 #define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t)
352 #define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t)
353 #define put_user_u8(x, gaddr) put_user((x), (gaddr), uint8_t)
354 #define put_user_s8(x, gaddr) put_user((x), (gaddr), int8_t)
356 #define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong)
357 #define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long)
358 #define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t)
359 #define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t)
360 #define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t)
361 #define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t)
362 #define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t)
363 #define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t)
364 #define get_user_u8(x, gaddr) get_user((x), (gaddr), uint8_t)
365 #define get_user_s8(x, gaddr) get_user((x), (gaddr), int8_t)
367 /* copy_from_user() and copy_to_user() are usually used to copy data
368 * buffers between the target and host. These internally perform
369 * locking/unlocking of the memory.
371 abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len);
372 abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len);
374 /* Functions for accessing guest memory. The tget and tput functions
375 read/write single values, byteswapping as neccessary. The lock_user
376 gets a pointer to a contiguous area of guest memory, but does not perform
377 and byteswapping. lock_user may return either a pointer to the guest
378 memory, or a temporary buffer. */
380 /* Lock an area of guest memory into the host. If copy is true then the
381 host area will have the same contents as the guest. */
382 static inline void *lock_user(int type, abi_ulong guest_addr, long len, int copy)
384 if (!access_ok(type, guest_addr, len))
391 memcpy(addr, g2h(guest_addr), len);
393 memset(addr, 0, len);
397 return g2h(guest_addr);
401 /* Unlock an area of guest memory. The first LEN bytes must be
402 flushed back to guest memory. host_ptr = NULL is explicitly
403 allowed and does nothing. */
404 static inline void unlock_user(void *host_ptr, abi_ulong guest_addr,
411 if (host_ptr == g2h(guest_addr))
414 memcpy(g2h(guest_addr), host_ptr, len);
419 /* Return the length of a string in target memory or -TARGET_EFAULT if
421 abi_long target_strlen(abi_ulong gaddr);
423 /* Like lock_user but for null terminated strings. */
424 static inline void *lock_user_string(abi_ulong guest_addr)
427 len = target_strlen(guest_addr);
430 return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1);
433 /* Helper macros for locking/ulocking a target struct. */
434 #define lock_user_struct(type, host_ptr, guest_addr, copy) \
435 (host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy))
436 #define unlock_user_struct(host_ptr, guest_addr, copy) \
437 unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0)
439 #if defined(USE_NPTL)