12 #endif /* DEBUG_REMAP */
14 #include "exec/user/abitypes.h"
16 #include "exec/user/thunk.h"
17 #include "syscall_defs.h"
19 #include "exec/gdbstub.h"
20 #include "qemu/queue.h"
22 #define THREAD __thread
24 /* This struct is used to hold certain information about the image.
25 * Basically, it replicates in user space what would be certain
26 * task_struct fields in the kernel
40 abi_ulong start_stack;
41 abi_ulong stack_limit;
43 abi_ulong code_offset;
44 abi_ulong data_offset;
51 #ifdef CONFIG_USE_FDPIC
52 abi_ulong loadmap_addr;
55 abi_ulong pt_dynamic_addr;
56 struct image_info *other_info;
61 /* Information about the current linux thread */
62 struct vm86_saved_state {
63 uint32_t eax; /* return code */
73 uint16_t cs, ss, ds, es, fs, gs;
77 #if defined(TARGET_ARM) && defined(TARGET_ABI32)
79 #include "nwfpe/fpa11.h"
82 #define MAX_SIGQUEUE_SIZE 1024
85 struct sigqueue *next;
86 target_siginfo_t info;
89 struct emulated_sigtable {
90 int pending; /* true if signal is pending */
91 struct sigqueue *first;
92 struct sigqueue info; /* in order to always have memory for the
93 first signal, we put it here */
96 /* NOTE: we force a big alignment so that the stack stored after is
98 typedef struct TaskState {
99 pid_t ts_tid; /* tid (or pid) of this task */
107 #ifdef TARGET_UNICORE32
110 #if defined(TARGET_I386) && !defined(TARGET_X86_64)
111 abi_ulong target_v86;
112 struct vm86_saved_state vm86_saved_regs;
113 struct target_vm86plus_struct vm86plus;
117 abi_ulong child_tidptr;
122 #if defined(TARGET_ARM) || defined(TARGET_M68K) || defined(TARGET_UNICORE32)
123 /* Extra fields for semihosted binaries. */
128 int used; /* non zero if used */
129 struct image_info *info;
130 struct linux_binprm *bprm;
132 struct emulated_sigtable sigtab[TARGET_NSIG];
133 struct sigqueue sigqueue_table[MAX_SIGQUEUE_SIZE]; /* siginfo queue */
134 struct sigqueue *first_free; /* first free siginfo queue entry */
135 int signal_pending; /* non zero if a signal may be pending */
136 } __attribute__((aligned(16))) TaskState;
138 extern char *exec_path;
139 void init_task_state(TaskState *ts);
140 void task_settid(TaskState *);
141 void stop_all_tasks(void);
142 extern const char *qemu_uname_release;
143 extern unsigned long mmap_min_addr;
145 /* ??? See if we can avoid exposing so much of the loader internals. */
147 * MAX_ARG_PAGES defines the number of pages allocated for arguments
148 * and envelope for the new program. 32 should suffice, this gives
149 * a maximum env+arg of 128kB w/4KB pages!
151 #define MAX_ARG_PAGES 33
153 /* Read a good amount of data initially, to hopefully get all the
154 program headers loaded. */
155 #define BPRM_BUF_SIZE 1024
158 * This structure is used to hold the arguments that are
159 * used when loading binaries.
161 struct linux_binprm {
162 char buf[BPRM_BUF_SIZE] __attribute__((aligned));
163 void *page[MAX_ARG_PAGES];
170 char * filename; /* Name of binary */
171 int (*core_dump)(int, const CPUArchState *); /* coredump routine */
174 void do_init_thread(struct target_pt_regs *regs, struct image_info *infop);
175 abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp,
176 abi_ulong stringp, int push_ptr);
177 int loader_exec(int fdexec, const char *filename, char **argv, char **envp,
178 struct target_pt_regs * regs, struct image_info *infop,
179 struct linux_binprm *);
181 int load_elf_binary(struct linux_binprm *bprm, struct image_info *info);
182 int load_flt_binary(struct linux_binprm *bprm, struct image_info *info);
184 abi_long memcpy_to_target(abi_ulong dest, const void *src,
186 void target_set_brk(abi_ulong new_brk);
187 abi_long do_brk(abi_ulong new_brk);
188 void syscall_init(void);
189 abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
190 abi_long arg2, abi_long arg3, abi_long arg4,
191 abi_long arg5, abi_long arg6, abi_long arg7,
193 void gemu_log(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
194 extern THREAD CPUState *thread_cpu;
195 void cpu_loop(CPUArchState *env);
196 char *target_strerror(int err);
197 int get_osversion(void);
198 void init_qemu_uname_release(void);
199 void fork_start(void);
200 void fork_end(int child);
202 /* Creates the initial guest address space in the host memory space using
203 * the given host start address hint and size. The guest_start parameter
204 * specifies the start address of the guest space. guest_base will be the
205 * difference between the host start address computed by this function and
206 * guest_start. If fixed is specified, then the mapped address space must
207 * start at host_start. The real start address of the mapped memory space is
208 * returned or -1 if there was an error.
210 unsigned long init_guest_space(unsigned long host_start,
211 unsigned long host_size,
212 unsigned long guest_start,
215 #include "qemu/log.h"
218 int host_to_target_waitstatus(int status);
221 void print_syscall(int num,
222 abi_long arg1, abi_long arg2, abi_long arg3,
223 abi_long arg4, abi_long arg5, abi_long arg6);
224 void print_syscall_ret(int num, abi_long arg1);
225 extern int do_strace;
228 void process_pending_signals(CPUArchState *cpu_env);
229 void signal_init(void);
230 int queue_signal(CPUArchState *env, int sig, target_siginfo_t *info);
231 void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info);
232 void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo);
233 int target_to_host_signal(int sig);
234 int host_to_target_signal(int sig);
235 long do_sigreturn(CPUArchState *env);
236 long do_rt_sigreturn(CPUArchState *env);
237 abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp);
241 void save_v86_state(CPUX86State *env);
242 void handle_vm86_trap(CPUX86State *env, int trapno);
243 void handle_vm86_fault(CPUX86State *env);
244 int do_vm86(CPUX86State *env, long subfunction, abi_ulong v86_addr);
245 #elif defined(TARGET_SPARC64)
246 void sparc64_set_context(CPUSPARCState *env);
247 void sparc64_get_context(CPUSPARCState *env);
251 int target_mprotect(abi_ulong start, abi_ulong len, int prot);
252 abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
253 int flags, int fd, abi_ulong offset);
254 int target_munmap(abi_ulong start, abi_ulong len);
255 abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size,
256 abi_ulong new_size, unsigned long flags,
258 int target_msync(abi_ulong start, abi_ulong len, int flags);
259 extern unsigned long last_brk;
260 extern abi_ulong mmap_next_start;
261 void mmap_lock(void);
262 void mmap_unlock(void);
263 abi_ulong mmap_find_vma(abi_ulong, abi_ulong);
264 void cpu_list_lock(void);
265 void cpu_list_unlock(void);
266 void mmap_fork_start(void);
267 void mmap_fork_end(int child);
270 extern unsigned long guest_stack_size;
274 #define VERIFY_READ 0
275 #define VERIFY_WRITE 1 /* implies read access */
277 static inline int access_ok(int type, abi_ulong addr, abi_ulong size)
279 return page_check_range((target_ulong)addr, size,
280 (type == VERIFY_READ) ? PAGE_READ : (PAGE_READ | PAGE_WRITE)) == 0;
283 /* NOTE __get_user and __put_user use host pointers and don't check access.
284 These are usually used to access struct data members once the struct has
285 been locked - usually with lock_user_struct. */
288 - Use __builtin_choose_expr to avoid type promotion from ?:,
289 - Invalid sizes result in a compile time error stemming from
290 the fact that abort has no parameters.
291 - It's easier to use the endian-specific unaligned load/store
292 functions than host-endian unaligned load/store plus tswapN. */
294 #define __put_user_e(x, hptr, e) \
295 (__builtin_choose_expr(sizeof(*(hptr)) == 1, stb_p, \
296 __builtin_choose_expr(sizeof(*(hptr)) == 2, stw_##e##_p, \
297 __builtin_choose_expr(sizeof(*(hptr)) == 4, stl_##e##_p, \
298 __builtin_choose_expr(sizeof(*(hptr)) == 8, stq_##e##_p, abort)))) \
301 #define __get_user_e(x, hptr, e) \
302 ((x) = (typeof(*hptr))( \
303 __builtin_choose_expr(sizeof(*(hptr)) == 1, ldub_p, \
304 __builtin_choose_expr(sizeof(*(hptr)) == 2, lduw_##e##_p, \
305 __builtin_choose_expr(sizeof(*(hptr)) == 4, ldl_##e##_p, \
306 __builtin_choose_expr(sizeof(*(hptr)) == 8, ldq_##e##_p, abort)))) \
309 #ifdef TARGET_WORDS_BIGENDIAN
310 # define __put_user(x, hptr) __put_user_e(x, hptr, be)
311 # define __get_user(x, hptr) __get_user_e(x, hptr, be)
313 # define __put_user(x, hptr) __put_user_e(x, hptr, le)
314 # define __get_user(x, hptr) __get_user_e(x, hptr, le)
317 /* put_user()/get_user() take a guest address and check access */
318 /* These are usually used to access an atomic data type, such as an int,
319 * that has been passed by address. These internally perform locking
320 * and unlocking on the data type.
322 #define put_user(x, gaddr, target_type) \
324 abi_ulong __gaddr = (gaddr); \
325 target_type *__hptr; \
327 if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \
328 __ret = __put_user((x), __hptr); \
329 unlock_user(__hptr, __gaddr, sizeof(target_type)); \
331 __ret = -TARGET_EFAULT; \
335 #define get_user(x, gaddr, target_type) \
337 abi_ulong __gaddr = (gaddr); \
338 target_type *__hptr; \
340 if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \
341 __ret = __get_user((x), __hptr); \
342 unlock_user(__hptr, __gaddr, 0); \
344 /* avoid warning */ \
346 __ret = -TARGET_EFAULT; \
351 #define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong)
352 #define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long)
353 #define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t)
354 #define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t)
355 #define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t)
356 #define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t)
357 #define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t)
358 #define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t)
359 #define put_user_u8(x, gaddr) put_user((x), (gaddr), uint8_t)
360 #define put_user_s8(x, gaddr) put_user((x), (gaddr), int8_t)
362 #define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong)
363 #define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long)
364 #define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t)
365 #define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t)
366 #define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t)
367 #define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t)
368 #define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t)
369 #define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t)
370 #define get_user_u8(x, gaddr) get_user((x), (gaddr), uint8_t)
371 #define get_user_s8(x, gaddr) get_user((x), (gaddr), int8_t)
373 /* copy_from_user() and copy_to_user() are usually used to copy data
374 * buffers between the target and host. These internally perform
375 * locking/unlocking of the memory.
377 abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len);
378 abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len);
380 /* Functions for accessing guest memory. The tget and tput functions
381 read/write single values, byteswapping as necessary. The lock_user function
382 gets a pointer to a contiguous area of guest memory, but does not perform
383 any byteswapping. lock_user may return either a pointer to the guest
384 memory, or a temporary buffer. */
386 /* Lock an area of guest memory into the host. If copy is true then the
387 host area will have the same contents as the guest. */
388 static inline void *lock_user(int type, abi_ulong guest_addr, long len, int copy)
390 if (!access_ok(type, guest_addr, len))
397 memcpy(addr, g2h(guest_addr), len);
399 memset(addr, 0, len);
403 return g2h(guest_addr);
407 /* Unlock an area of guest memory. The first LEN bytes must be
408 flushed back to guest memory. host_ptr = NULL is explicitly
409 allowed and does nothing. */
410 static inline void unlock_user(void *host_ptr, abi_ulong guest_addr,
417 if (host_ptr == g2h(guest_addr))
420 memcpy(g2h(guest_addr), host_ptr, len);
425 /* Return the length of a string in target memory or -TARGET_EFAULT if
427 abi_long target_strlen(abi_ulong gaddr);
429 /* Like lock_user but for null terminated strings. */
430 static inline void *lock_user_string(abi_ulong guest_addr)
433 len = target_strlen(guest_addr);
436 return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1);
439 /* Helper macros for locking/unlocking a target struct. */
440 #define lock_user_struct(type, host_ptr, guest_addr, copy) \
441 (host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy))
442 #define unlock_user_struct(host_ptr, guest_addr, copy) \
443 unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0)
447 /* Include target-specific struct and function definitions;
448 * they may need access to the target-independent structures
449 * above, so include them last.
451 #include "target_cpu.h"
452 #include "target_signal.h"
453 #include "target_structs.h"