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, abi_long arg7,
197
void gemu_log(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
198
extern THREAD CPUState *thread_env;
199
void cpu_loop(CPUState *env);
200
char *target_strerror(int err);
201
int get_osversion(void);
202
void fork_start(void);
203
void fork_end(int child);
205
/* Return true if the proposed guest_base is suitable for the guest.
206
* The guest code may leave a page mapped and populate it if the
207
* address is suitable.
209
bool guest_validate_base(unsigned long guest_base);
211
#include "qemu-log.h"
214
void print_syscall(int num,
215
abi_long arg1, abi_long arg2, abi_long arg3,
216
abi_long arg4, abi_long arg5, abi_long arg6);
217
void print_syscall_ret(int num, abi_long arg1);
218
extern int do_strace;
221
void process_pending_signals(CPUState *cpu_env);
222
void signal_init(void);
223
int queue_signal(CPUState *env, int sig, target_siginfo_t *info);
224
void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info);
225
void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo);
226
int target_to_host_signal(int sig);
227
int host_to_target_signal(int sig);
228
long do_sigreturn(CPUState *env);
229
long do_rt_sigreturn(CPUState *env);
230
abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp);
234
void save_v86_state(CPUX86State *env);
235
void handle_vm86_trap(CPUX86State *env, int trapno);
236
void handle_vm86_fault(CPUX86State *env);
237
int do_vm86(CPUX86State *env, long subfunction, abi_ulong v86_addr);
238
#elif defined(TARGET_SPARC64)
239
void sparc64_set_context(CPUSPARCState *env);
240
void sparc64_get_context(CPUSPARCState *env);
244
int target_mprotect(abi_ulong start, abi_ulong len, int prot);
245
abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
246
int flags, int fd, abi_ulong offset);
247
int target_munmap(abi_ulong start, abi_ulong len);
248
abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size,
249
abi_ulong new_size, unsigned long flags,
251
int target_msync(abi_ulong start, abi_ulong len, int flags);
252
extern unsigned long last_brk;
253
void mmap_lock(void);
254
void mmap_unlock(void);
255
abi_ulong mmap_find_vma(abi_ulong, abi_ulong);
256
void cpu_list_lock(void);
257
void cpu_list_unlock(void);
258
#if defined(CONFIG_USE_NPTL)
259
void mmap_fork_start(void);
260
void mmap_fork_end(int child);
264
extern unsigned long guest_stack_size;
268
#define VERIFY_READ 0
269
#define VERIFY_WRITE 1 /* implies read access */
271
static inline int access_ok(int type, abi_ulong addr, abi_ulong size)
273
return page_check_range((target_ulong)addr, size,
274
(type == VERIFY_READ) ? PAGE_READ : (PAGE_READ | PAGE_WRITE)) == 0;
277
/* NOTE __get_user and __put_user use host pointers and don't check access. */
278
/* These are usually used to access struct data members once the
279
* struct has been locked - usually with lock_user_struct().
281
#define __put_user(x, hptr)\
283
switch(sizeof(*hptr)) {\
285
*(uint8_t *)(hptr) = (uint8_t)(typeof(*hptr))(x);\
288
*(uint16_t *)(hptr) = tswap16((uint16_t)(typeof(*hptr))(x));\
291
*(uint32_t *)(hptr) = tswap32((uint32_t)(typeof(*hptr))(x));\
294
*(uint64_t *)(hptr) = tswap64((typeof(*hptr))(x));\
302
#define __get_user(x, hptr) \
304
switch(sizeof(*hptr)) {\
306
x = (typeof(*hptr))*(uint8_t *)(hptr);\
309
x = (typeof(*hptr))tswap16(*(uint16_t *)(hptr));\
312
x = (typeof(*hptr))tswap32(*(uint32_t *)(hptr));\
315
x = (typeof(*hptr))tswap64(*(uint64_t *)(hptr));\
325
/* put_user()/get_user() take a guest address and check access */
326
/* These are usually used to access an atomic data type, such as an int,
327
* that has been passed by address. These internally perform locking
328
* and unlocking on the data type.
330
#define put_user(x, gaddr, target_type) \
332
abi_ulong __gaddr = (gaddr); \
333
target_type *__hptr; \
335
if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \
336
__ret = __put_user((x), __hptr); \
337
unlock_user(__hptr, __gaddr, sizeof(target_type)); \
339
__ret = -TARGET_EFAULT; \
343
#define get_user(x, gaddr, target_type) \
345
abi_ulong __gaddr = (gaddr); \
346
target_type *__hptr; \
348
if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \
349
__ret = __get_user((x), __hptr); \
350
unlock_user(__hptr, __gaddr, 0); \
352
/* avoid warning */ \
354
__ret = -TARGET_EFAULT; \
359
#define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong)
360
#define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long)
361
#define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t)
362
#define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t)
363
#define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t)
364
#define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t)
365
#define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t)
366
#define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t)
367
#define put_user_u8(x, gaddr) put_user((x), (gaddr), uint8_t)
368
#define put_user_s8(x, gaddr) put_user((x), (gaddr), int8_t)
370
#define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong)
371
#define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long)
372
#define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t)
373
#define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t)
374
#define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t)
375
#define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t)
376
#define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t)
377
#define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t)
378
#define get_user_u8(x, gaddr) get_user((x), (gaddr), uint8_t)
379
#define get_user_s8(x, gaddr) get_user((x), (gaddr), int8_t)
381
/* copy_from_user() and copy_to_user() are usually used to copy data
382
* buffers between the target and host. These internally perform
383
* locking/unlocking of the memory.
385
abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len);
386
abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len);
388
/* Functions for accessing guest memory. The tget and tput functions
389
read/write single values, byteswapping as necessary. The lock_user
390
gets a pointer to a contiguous area of guest memory, but does not perform
391
and byteswapping. lock_user may return either a pointer to the guest
392
memory, or a temporary buffer. */
394
/* Lock an area of guest memory into the host. If copy is true then the
395
host area will have the same contents as the guest. */
396
static inline void *lock_user(int type, abi_ulong guest_addr, long len, int copy)
398
if (!access_ok(type, guest_addr, len))
405
memcpy(addr, g2h(guest_addr), len);
407
memset(addr, 0, len);
411
return g2h(guest_addr);
415
/* Unlock an area of guest memory. The first LEN bytes must be
416
flushed back to guest memory. host_ptr = NULL is explicitly
417
allowed and does nothing. */
418
static inline void unlock_user(void *host_ptr, abi_ulong guest_addr,
425
if (host_ptr == g2h(guest_addr))
428
memcpy(g2h(guest_addr), host_ptr, len);
433
/* Return the length of a string in target memory or -TARGET_EFAULT if
435
abi_long target_strlen(abi_ulong gaddr);
437
/* Like lock_user but for null terminated strings. */
438
static inline void *lock_user_string(abi_ulong guest_addr)
441
len = target_strlen(guest_addr);
444
return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1);
447
/* Helper macros for locking/ulocking a target struct. */
448
#define lock_user_struct(type, host_ptr, guest_addr, copy) \
449
(host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy))
450
#define unlock_user_struct(host_ptr, guest_addr, copy) \
451
unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0)
453
#if defined(CONFIG_USE_NPTL)
added
removed
linux-user/qemu.h
