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;
55 #ifdef CONFIG_USE_FDPIC
56 abi_ulong loadmap_addr;
59 abi_ulong pt_dynamic_addr;
60 struct image_info *other_info;
65 /* Information about the current linux thread */
66 struct vm86_saved_state {
67 uint32_t eax; /* return code */
77 uint16_t cs, ss, ds, es, fs, gs;
83 #include "nwfpe/fpa11.h"
86 #define MAX_SIGQUEUE_SIZE 1024
89 struct sigqueue *next;
90 target_siginfo_t info;
93 struct emulated_sigtable {
94 int pending; /* true if signal is pending */
95 struct sigqueue *first;
96 struct sigqueue info; /* in order to always have memory for the
97 first signal, we put it here */
100 /* NOTE: we force a big alignment so that the stack stored after is
102 typedef struct TaskState {
103 pid_t ts_tid; /* tid (or pid) of this task */
109 #ifdef TARGET_UNICORE32
112 #if defined(TARGET_I386) && !defined(TARGET_X86_64)
113 abi_ulong target_v86;
114 struct vm86_saved_state vm86_saved_regs;
115 struct target_vm86plus_struct vm86plus;
119 #ifdef CONFIG_USE_NPTL
120 abi_ulong child_tidptr;
125 #if defined(TARGET_ARM) || defined(TARGET_M68K) || defined(TARGET_UNICORE32)
126 /* Extra fields for semihosted binaries. */
131 int used; /* non zero if used */
132 struct image_info *info;
133 struct linux_binprm *bprm;
135 struct emulated_sigtable sigtab[TARGET_NSIG];
136 struct sigqueue sigqueue_table[MAX_SIGQUEUE_SIZE]; /* siginfo queue */
137 struct sigqueue *first_free; /* first free siginfo queue entry */
138 int signal_pending; /* non zero if a signal may be pending */
139 } __attribute__((aligned(16))) TaskState;
141 extern char *exec_path;
142 void init_task_state(TaskState *ts);
143 void task_settid(TaskState *);
144 void stop_all_tasks(void);
145 extern const char *qemu_uname_release;
146 extern unsigned long mmap_min_addr;
148 /* ??? See if we can avoid exposing so much of the loader internals. */
150 * MAX_ARG_PAGES defines the number of pages allocated for arguments
151 * and envelope for the new program. 32 should suffice, this gives
152 * a maximum env+arg of 128kB w/4KB pages!
154 #define MAX_ARG_PAGES 33
156 /* Read a good amount of data initially, to hopefully get all the
157 program headers loaded. */
158 #define BPRM_BUF_SIZE 1024
161 * This structure is used to hold the arguments that are
162 * used when loading binaries.
164 struct linux_binprm {
165 char buf[BPRM_BUF_SIZE] __attribute__((aligned));
166 void *page[MAX_ARG_PAGES];
173 char * filename; /* Name of binary */
174 int (*core_dump)(int, const CPUState *); /* coredump routine */
177 void do_init_thread(struct target_pt_regs *regs, struct image_info *infop);
178 abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp,
179 abi_ulong stringp, int push_ptr);
180 int loader_exec(const char * filename, char ** argv, char ** envp,
181 struct target_pt_regs * regs, struct image_info *infop,
182 struct linux_binprm *);
184 int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
185 struct image_info * info);
186 int load_flt_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
187 struct image_info * info);
189 abi_long memcpy_to_target(abi_ulong dest, const void *src,
191 void target_set_brk(abi_ulong new_brk);
192 abi_long do_brk(abi_ulong new_brk);
193 void syscall_init(void);
194 abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
195 abi_long arg2, abi_long arg3, abi_long arg4,
196 abi_long arg5, abi_long arg6, abi_long arg7,
198 void gemu_log(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
199 extern THREAD CPUState *thread_env;
200 void cpu_loop(CPUState *env);
201 char *target_strerror(int err);
202 int get_osversion(void);
203 void fork_start(void);
204 void fork_end(int child);
206 /* Return true if the proposed guest_base is suitable for the guest.
207 * The guest code may leave a page mapped and populate it if the
208 * address is suitable.
210 bool guest_validate_base(unsigned long guest_base);
212 #include "qemu-log.h"
215 void print_syscall(int num,
216 abi_long arg1, abi_long arg2, abi_long arg3,
217 abi_long arg4, abi_long arg5, abi_long arg6);
218 void print_syscall_ret(int num, abi_long arg1);
219 extern int do_strace;
222 void process_pending_signals(CPUState *cpu_env);
223 void signal_init(void);
224 int queue_signal(CPUState *env, int sig, target_siginfo_t *info);
225 void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info);
226 void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo);
227 int target_to_host_signal(int sig);
228 int host_to_target_signal(int sig);
229 long do_sigreturn(CPUState *env);
230 long do_rt_sigreturn(CPUState *env);
231 abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp);
235 void save_v86_state(CPUX86State *env);
236 void handle_vm86_trap(CPUX86State *env, int trapno);
237 void handle_vm86_fault(CPUX86State *env);
238 int do_vm86(CPUX86State *env, long subfunction, abi_ulong v86_addr);
239 #elif defined(TARGET_SPARC64)
240 void sparc64_set_context(CPUSPARCState *env);
241 void sparc64_get_context(CPUSPARCState *env);
245 int target_mprotect(abi_ulong start, abi_ulong len, int prot);
246 abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
247 int flags, int fd, abi_ulong offset);
248 int target_munmap(abi_ulong start, abi_ulong len);
249 abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size,
250 abi_ulong new_size, unsigned long flags,
252 int target_msync(abi_ulong start, abi_ulong len, int flags);
253 extern unsigned long last_brk;
254 void mmap_lock(void);
255 void mmap_unlock(void);
256 abi_ulong mmap_find_vma(abi_ulong, abi_ulong);
257 void cpu_list_lock(void);
258 void cpu_list_unlock(void);
259 #if defined(CONFIG_USE_NPTL)
260 void mmap_fork_start(void);
261 void mmap_fork_end(int child);
265 extern unsigned long guest_stack_size;
269 #define VERIFY_READ 0
270 #define VERIFY_WRITE 1 /* implies read access */
272 static inline int access_ok(int type, abi_ulong addr, abi_ulong size)
274 return page_check_range((target_ulong)addr, size,
275 (type == VERIFY_READ) ? PAGE_READ : (PAGE_READ | PAGE_WRITE)) == 0;
278 /* NOTE __get_user and __put_user use host pointers and don't check access. */
279 /* These are usually used to access struct data members once the
280 * struct has been locked - usually with lock_user_struct().
282 #define __put_user(x, hptr)\
284 switch(sizeof(*hptr)) {\
286 *(uint8_t *)(hptr) = (uint8_t)(typeof(*hptr))(x);\
289 *(uint16_t *)(hptr) = tswap16((uint16_t)(typeof(*hptr))(x));\
292 *(uint32_t *)(hptr) = tswap32((uint32_t)(typeof(*hptr))(x));\
295 *(uint64_t *)(hptr) = tswap64((typeof(*hptr))(x));\
303 #define __get_user(x, hptr) \
305 switch(sizeof(*hptr)) {\
307 x = (typeof(*hptr))*(uint8_t *)(hptr);\
310 x = (typeof(*hptr))tswap16(*(uint16_t *)(hptr));\
313 x = (typeof(*hptr))tswap32(*(uint32_t *)(hptr));\
316 x = (typeof(*hptr))tswap64(*(uint64_t *)(hptr));\
326 /* put_user()/get_user() take a guest address and check access */
327 /* These are usually used to access an atomic data type, such as an int,
328 * that has been passed by address. These internally perform locking
329 * and unlocking on the data type.
331 #define put_user(x, gaddr, target_type) \
333 abi_ulong __gaddr = (gaddr); \
334 target_type *__hptr; \
336 if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \
337 __ret = __put_user((x), __hptr); \
338 unlock_user(__hptr, __gaddr, sizeof(target_type)); \
340 __ret = -TARGET_EFAULT; \
344 #define get_user(x, gaddr, target_type) \
346 abi_ulong __gaddr = (gaddr); \
347 target_type *__hptr; \
349 if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \
350 __ret = __get_user((x), __hptr); \
351 unlock_user(__hptr, __gaddr, 0); \
353 /* avoid warning */ \
355 __ret = -TARGET_EFAULT; \
360 #define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong)
361 #define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long)
362 #define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t)
363 #define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t)
364 #define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t)
365 #define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t)
366 #define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t)
367 #define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t)
368 #define put_user_u8(x, gaddr) put_user((x), (gaddr), uint8_t)
369 #define put_user_s8(x, gaddr) put_user((x), (gaddr), int8_t)
371 #define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong)
372 #define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long)
373 #define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t)
374 #define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t)
375 #define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t)
376 #define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t)
377 #define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t)
378 #define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t)
379 #define get_user_u8(x, gaddr) get_user((x), (gaddr), uint8_t)
380 #define get_user_s8(x, gaddr) get_user((x), (gaddr), int8_t)
382 /* copy_from_user() and copy_to_user() are usually used to copy data
383 * buffers between the target and host. These internally perform
384 * locking/unlocking of the memory.
386 abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len);
387 abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len);
389 /* Functions for accessing guest memory. The tget and tput functions
390 read/write single values, byteswapping as necessary. The lock_user
391 gets a pointer to a contiguous area of guest memory, but does not perform
392 and byteswapping. lock_user may return either a pointer to the guest
393 memory, or a temporary buffer. */
395 /* Lock an area of guest memory into the host. If copy is true then the
396 host area will have the same contents as the guest. */
397 static inline void *lock_user(int type, abi_ulong guest_addr, long len, int copy)
399 if (!access_ok(type, guest_addr, len))
406 memcpy(addr, g2h(guest_addr), len);
408 memset(addr, 0, len);
412 return g2h(guest_addr);
416 /* Unlock an area of guest memory. The first LEN bytes must be
417 flushed back to guest memory. host_ptr = NULL is explicitly
418 allowed and does nothing. */
419 static inline void unlock_user(void *host_ptr, abi_ulong guest_addr,
426 if (host_ptr == g2h(guest_addr))
429 memcpy(g2h(guest_addr), host_ptr, len);
434 /* Return the length of a string in target memory or -TARGET_EFAULT if
436 abi_long target_strlen(abi_ulong gaddr);
438 /* Like lock_user but for null terminated strings. */
439 static inline void *lock_user_string(abi_ulong guest_addr)
442 len = target_strlen(guest_addr);
445 return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1);
448 /* Helper macros for locking/ulocking a target struct. */
449 #define lock_user_struct(type, host_ptr, guest_addr, copy) \
450 (host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy))
451 #define unlock_user_struct(host_ptr, guest_addr, copy) \
452 unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0)
454 #if defined(CONFIG_USE_NPTL)