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;
52 /* Information about the current linux thread */
53 struct vm86_saved_state {
54 uint32_t eax; /* return code */
64 uint16_t cs, ss, ds, es, fs, gs;
70 #include "nwfpe/fpa11.h"
73 #define MAX_SIGQUEUE_SIZE 1024
76 struct sigqueue *next;
77 target_siginfo_t info;
80 struct emulated_sigtable {
81 int pending; /* true if signal is pending */
82 struct sigqueue *first;
83 struct sigqueue info; /* in order to always have memory for the
84 first signal, we put it here */
87 /* NOTE: we force a big alignment so that the stack stored after is
89 typedef struct TaskState {
90 struct TaskState *next;
96 #if defined(TARGET_I386) && !defined(TARGET_X86_64)
98 struct vm86_saved_state vm86_saved_regs;
99 struct target_vm86plus_struct vm86plus;
104 abi_ulong child_tidptr;
109 #if defined(TARGET_ARM) || defined(TARGET_M68K)
110 /* Extra fields for semihosted binaries. */
115 int used; /* non zero if used */
116 struct image_info *info;
118 struct emulated_sigtable sigtab[TARGET_NSIG];
119 struct sigqueue sigqueue_table[MAX_SIGQUEUE_SIZE]; /* siginfo queue */
120 struct sigqueue *first_free; /* first free siginfo queue entry */
121 int signal_pending; /* non zero if a signal may be pending */
124 } __attribute__((aligned(16))) TaskState;
126 extern const char *exec_path;
127 void init_task_state(TaskState *ts);
128 extern const char *qemu_uname_release;
129 #if defined(CONFIG_USE_GUEST_BASE)
130 extern unsigned long mmap_min_addr;
133 /* ??? See if we can avoid exposing so much of the loader internals. */
135 * MAX_ARG_PAGES defines the number of pages allocated for arguments
136 * and envelope for the new program. 32 should suffice, this gives
137 * a maximum env+arg of 128kB w/4KB pages!
139 #define MAX_ARG_PAGES 32
142 * This structure is used to hold the arguments that are
143 * used when loading binaries.
145 struct linux_binprm {
147 void *page[MAX_ARG_PAGES];
154 char * filename; /* Name of binary */
157 void do_init_thread(struct target_pt_regs *regs, struct image_info *infop);
158 abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp,
159 abi_ulong stringp, int push_ptr);
160 int loader_exec(const char * filename, char ** argv, char ** envp,
161 struct target_pt_regs * regs, struct image_info *infop);
163 int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
164 struct image_info * info);
165 int load_flt_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
166 struct image_info * info);
167 #ifdef TARGET_HAS_ELFLOAD32
168 int load_elf_binary_multi(struct linux_binprm *bprm,
169 struct target_pt_regs *regs,
170 struct image_info *info);
173 abi_long memcpy_to_target(abi_ulong dest, const void *src,
175 void target_set_brk(abi_ulong new_brk);
176 abi_long do_brk(abi_ulong new_brk);
177 void syscall_init(void);
178 abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
179 abi_long arg2, abi_long arg3, abi_long arg4,
180 abi_long arg5, abi_long arg6);
181 void gemu_log(const char *fmt, ...) __attribute__((format(printf,1,2)));
182 extern THREAD CPUState *thread_env;
183 void cpu_loop(CPUState *env);
184 void init_paths(const char *prefix);
185 const char *path(const char *pathname);
186 char *target_strerror(int err);
187 int get_osversion(void);
188 void fork_start(void);
189 void fork_end(int child);
191 #include "qemu-log.h"
194 void print_syscall(int num,
195 abi_long arg1, abi_long arg2, abi_long arg3,
196 abi_long arg4, abi_long arg5, abi_long arg6);
197 void print_syscall_ret(int num, abi_long arg1);
198 extern int do_strace;
201 void process_pending_signals(CPUState *cpu_env);
202 void signal_init(void);
203 int queue_signal(CPUState *env, int sig, target_siginfo_t *info);
204 void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info);
205 void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo);
206 int target_to_host_signal(int sig);
207 long do_sigreturn(CPUState *env);
208 long do_rt_sigreturn(CPUState *env);
209 abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp);
213 void save_v86_state(CPUX86State *env);
214 void handle_vm86_trap(CPUX86State *env, int trapno);
215 void handle_vm86_fault(CPUX86State *env);
216 int do_vm86(CPUX86State *env, long subfunction, abi_ulong v86_addr);
217 #elif defined(TARGET_SPARC64)
218 void sparc64_set_context(CPUSPARCState *env);
219 void sparc64_get_context(CPUSPARCState *env);
223 int target_mprotect(abi_ulong start, abi_ulong len, int prot);
224 abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
225 int flags, int fd, abi_ulong offset);
226 int target_munmap(abi_ulong start, abi_ulong len);
227 abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size,
228 abi_ulong new_size, unsigned long flags,
230 int target_msync(abi_ulong start, abi_ulong len, int flags);
231 extern unsigned long last_brk;
232 void mmap_lock(void);
233 void mmap_unlock(void);
234 void cpu_list_lock(void);
235 void cpu_list_unlock(void);
236 #if defined(USE_NPTL)
237 void mmap_fork_start(void);
238 void mmap_fork_end(int child);
242 extern unsigned long x86_stack_size;
246 #define VERIFY_READ 0
247 #define VERIFY_WRITE 1 /* implies read access */
249 static inline int access_ok(int type, abi_ulong addr, abi_ulong size)
251 return page_check_range((target_ulong)addr, size,
252 (type == VERIFY_READ) ? PAGE_READ : (PAGE_READ | PAGE_WRITE)) == 0;
255 /* NOTE __get_user and __put_user use host pointers and don't check access. */
256 /* These are usually used to access struct data members once the
257 * struct has been locked - usually with lock_user_struct().
259 #define __put_user(x, hptr)\
261 int size = sizeof(*hptr);\
264 *(uint8_t *)(hptr) = (uint8_t)(typeof(*hptr))(x);\
267 *(uint16_t *)(hptr) = tswap16((typeof(*hptr))(x));\
270 *(uint32_t *)(hptr) = tswap32((typeof(*hptr))(x));\
273 *(uint64_t *)(hptr) = tswap64((typeof(*hptr))(x));\
281 #define __get_user(x, hptr) \
283 int size = sizeof(*hptr);\
286 x = (typeof(*hptr))*(uint8_t *)(hptr);\
289 x = (typeof(*hptr))tswap16(*(uint16_t *)(hptr));\
292 x = (typeof(*hptr))tswap32(*(uint32_t *)(hptr));\
295 x = (typeof(*hptr))tswap64(*(uint64_t *)(hptr));\
305 /* put_user()/get_user() take a guest address and check access */
306 /* These are usually used to access an atomic data type, such as an int,
307 * that has been passed by address. These internally perform locking
308 * and unlocking on the data type.
310 #define put_user(x, gaddr, target_type) \
312 abi_ulong __gaddr = (gaddr); \
313 target_type *__hptr; \
315 if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \
316 __ret = __put_user((x), __hptr); \
317 unlock_user(__hptr, __gaddr, sizeof(target_type)); \
319 __ret = -TARGET_EFAULT; \
323 #define get_user(x, gaddr, target_type) \
325 abi_ulong __gaddr = (gaddr); \
326 target_type *__hptr; \
328 if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \
329 __ret = __get_user((x), __hptr); \
330 unlock_user(__hptr, __gaddr, 0); \
332 /* avoid warning */ \
334 __ret = -TARGET_EFAULT; \
339 #define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong)
340 #define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long)
341 #define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t)
342 #define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t)
343 #define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t)
344 #define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t)
345 #define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t)
346 #define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t)
347 #define put_user_u8(x, gaddr) put_user((x), (gaddr), uint8_t)
348 #define put_user_s8(x, gaddr) put_user((x), (gaddr), int8_t)
350 #define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong)
351 #define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long)
352 #define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t)
353 #define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t)
354 #define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t)
355 #define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t)
356 #define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t)
357 #define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t)
358 #define get_user_u8(x, gaddr) get_user((x), (gaddr), uint8_t)
359 #define get_user_s8(x, gaddr) get_user((x), (gaddr), int8_t)
361 /* copy_from_user() and copy_to_user() are usually used to copy data
362 * buffers between the target and host. These internally perform
363 * locking/unlocking of the memory.
365 abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len);
366 abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len);
368 /* Functions for accessing guest memory. The tget and tput functions
369 read/write single values, byteswapping as neccessary. The lock_user
370 gets a pointer to a contiguous area of guest memory, but does not perform
371 and byteswapping. lock_user may return either a pointer to the guest
372 memory, or a temporary buffer. */
374 /* Lock an area of guest memory into the host. If copy is true then the
375 host area will have the same contents as the guest. */
376 static inline void *lock_user(int type, abi_ulong guest_addr, long len, int copy)
378 if (!access_ok(type, guest_addr, len))
385 memcpy(addr, g2h(guest_addr), len);
387 memset(addr, 0, len);
391 return g2h(guest_addr);
395 /* Unlock an area of guest memory. The first LEN bytes must be
396 flushed back to guest memory. host_ptr = NULL is explicitly
397 allowed and does nothing. */
398 static inline void unlock_user(void *host_ptr, abi_ulong guest_addr,
405 if (host_ptr == g2h(guest_addr))
408 memcpy(g2h(guest_addr), host_ptr, len);
413 /* Return the length of a string in target memory or -TARGET_EFAULT if
415 abi_long target_strlen(abi_ulong gaddr);
417 /* Like lock_user but for null terminated strings. */
418 static inline void *lock_user_string(abi_ulong guest_addr)
421 len = target_strlen(guest_addr);
424 return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1);
427 /* Helper macros for locking/ulocking a target struct. */
428 #define lock_user_struct(type, host_ptr, guest_addr, copy) \
429 (host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy))
430 #define unlock_user_struct(host_ptr, guest_addr, copy) \
431 unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0)
433 #if defined(USE_NPTL)