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1.1 root 1: #ifndef QEMU_H
2: #define QEMU_H
3:
4: #include <signal.h>
5: #include <string.h>
6:
7: #include "cpu.h"
1.1.1.5 root 8:
9: #undef DEBUG_REMAP
10: #ifdef DEBUG_REMAP
11: #include <stdlib.h>
12: #endif /* DEBUG_REMAP */
13:
1.1.1.6 root 14: #include "qemu-types.h"
1.1.1.5 root 15:
16: #include "thunk.h"
17: #include "syscall_defs.h"
1.1 root 18: #include "syscall.h"
1.1.1.5 root 19: #include "target_signal.h"
1.1 root 20: #include "gdbstub.h"
1.1.1.7 ! root 21: #include "sys-queue.h"
1.1 root 22:
1.1.1.6 root 23: #if defined(USE_NPTL)
24: #define THREAD __thread
25: #else
26: #define THREAD
27: #endif
28:
1.1 root 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
32: */
33: struct image_info {
1.1.1.5 root 34: abi_ulong load_addr;
35: abi_ulong start_code;
36: abi_ulong end_code;
37: abi_ulong start_data;
38: abi_ulong end_data;
39: abi_ulong start_brk;
40: abi_ulong brk;
41: abi_ulong start_mmap;
42: abi_ulong mmap;
43: abi_ulong rss;
44: abi_ulong start_stack;
45: abi_ulong entry;
46: abi_ulong code_offset;
47: abi_ulong data_offset;
1.1.1.7 ! root 48: abi_ulong saved_auxv;
! 49: abi_ulong arg_start;
! 50: abi_ulong arg_end;
1.1.1.4 root 51: char **host_argv;
1.1 root 52: int personality;
53: };
54:
55: #ifdef TARGET_I386
56: /* Information about the current linux thread */
57: struct vm86_saved_state {
58: uint32_t eax; /* return code */
59: uint32_t ebx;
60: uint32_t ecx;
61: uint32_t edx;
62: uint32_t esi;
63: uint32_t edi;
64: uint32_t ebp;
65: uint32_t esp;
66: uint32_t eflags;
67: uint32_t eip;
68: uint16_t cs, ss, ds, es, fs, gs;
69: };
70: #endif
71:
72: #ifdef TARGET_ARM
73: /* FPU emulator */
74: #include "nwfpe/fpa11.h"
75: #endif
76:
1.1.1.6 root 77: #define MAX_SIGQUEUE_SIZE 1024
78:
79: struct sigqueue {
80: struct sigqueue *next;
81: target_siginfo_t info;
82: };
83:
84: struct emulated_sigtable {
85: int pending; /* true if signal is pending */
86: struct sigqueue *first;
87: struct sigqueue info; /* in order to always have memory for the
88: first signal, we put it here */
89: };
90:
1.1 root 91: /* NOTE: we force a big alignment so that the stack stored after is
92: aligned too */
93: typedef struct TaskState {
1.1.1.7 ! root 94: pid_t ts_tid; /* tid (or pid) of this task */
1.1 root 95: #ifdef TARGET_ARM
96: /* FPA state */
97: FPA11 fpa;
98: int swi_errno;
99: #endif
1.1.1.5 root 100: #if defined(TARGET_I386) && !defined(TARGET_X86_64)
101: abi_ulong target_v86;
1.1 root 102: struct vm86_saved_state vm86_saved_regs;
103: struct target_vm86plus_struct vm86plus;
104: uint32_t v86flags;
105: uint32_t v86mask;
106: #endif
1.1.1.7 ! root 107: #ifdef USE_NPTL
! 108: abi_ulong child_tidptr;
! 109: #endif
1.1.1.4 root 110: #ifdef TARGET_M68K
111: int sim_syscalls;
112: #endif
1.1.1.5 root 113: #if defined(TARGET_ARM) || defined(TARGET_M68K)
114: /* Extra fields for semihosted binaries. */
115: uint32_t stack_base;
116: uint32_t heap_base;
117: uint32_t heap_limit;
118: #endif
1.1 root 119: int used; /* non zero if used */
1.1.1.3 root 120: struct image_info *info;
1.1.1.7 ! root 121: struct linux_binprm *bprm;
1.1.1.6 root 122:
123: struct emulated_sigtable sigtab[TARGET_NSIG];
124: struct sigqueue sigqueue_table[MAX_SIGQUEUE_SIZE]; /* siginfo queue */
125: struct sigqueue *first_free; /* first free siginfo queue entry */
126: int signal_pending; /* non zero if a signal may be pending */
127:
1.1 root 128: uint8_t stack[0];
129: } __attribute__((aligned(16))) TaskState;
130:
1.1.1.6 root 131: extern char *exec_path;
132: void init_task_state(TaskState *ts);
1.1.1.7 ! root 133: void task_settid(TaskState *);
! 134: void stop_all_tasks(void);
1.1.1.3 root 135: extern const char *qemu_uname_release;
1.1 root 136:
1.1.1.3 root 137: /* ??? See if we can avoid exposing so much of the loader internals. */
138: /*
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!
142: */
1.1.1.7 ! root 143: #define MAX_ARG_PAGES 33
1.1.1.3 root 144:
145: /*
1.1.1.5 root 146: * This structure is used to hold the arguments that are
1.1.1.3 root 147: * used when loading binaries.
148: */
149: struct linux_binprm {
150: char buf[128];
151: void *page[MAX_ARG_PAGES];
1.1.1.5 root 152: abi_ulong p;
1.1.1.3 root 153: int fd;
154: int e_uid, e_gid;
155: int argc, envc;
156: char **argv;
157: char **envp;
158: char * filename; /* Name of binary */
1.1.1.7 ! root 159: int (*core_dump)(int, const CPUState *); /* coredump routine */
1.1.1.3 root 160: };
161:
162: void do_init_thread(struct target_pt_regs *regs, struct image_info *infop);
1.1.1.5 root 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,
1.1.1.7 ! root 166: struct target_pt_regs * regs, struct image_info *infop,
! 167: struct linux_binprm *);
1.1 root 168:
1.1.1.3 root 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);
1.1.1.5 root 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);
177: #endif
1.1.1.3 root 178:
1.1.1.5 root 179: abi_long memcpy_to_target(abi_ulong dest, const void *src,
180: unsigned long len);
181: void target_set_brk(abi_ulong new_brk);
182: abi_long do_brk(abi_ulong new_brk);
1.1 root 183: void syscall_init(void);
1.1.1.5 root 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);
1.1 root 187: void gemu_log(const char *fmt, ...) __attribute__((format(printf,1,2)));
1.1.1.6 root 188: extern THREAD CPUState *thread_env;
1.1 root 189: void cpu_loop(CPUState *env);
190: void init_paths(const char *prefix);
191: const char *path(const char *pathname);
1.1.1.5 root 192: char *target_strerror(int err);
1.1.1.6 root 193: int get_osversion(void);
194: void fork_start(void);
195: void fork_end(int child);
1.1 root 196:
1.1.1.6 root 197: #include "qemu-log.h"
1.1 root 198:
1.1.1.5 root 199: /* strace.c */
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;
205:
1.1 root 206: /* signal.c */
1.1.1.6 root 207: void process_pending_signals(CPUState *cpu_env);
1.1 root 208: void signal_init(void);
1.1.1.6 root 209: int queue_signal(CPUState *env, int sig, target_siginfo_t *info);
1.1 root 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);
1.1.1.6 root 212: int target_to_host_signal(int sig);
1.1.1.7 ! root 213: int host_to_target_signal(int sig);
1.1 root 214: long do_sigreturn(CPUState *env);
215: long do_rt_sigreturn(CPUState *env);
1.1.1.5 root 216: abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp);
1.1 root 217:
218: #ifdef TARGET_I386
219: /* vm86.c */
220: void save_v86_state(CPUX86State *env);
221: void handle_vm86_trap(CPUX86State *env, int trapno);
222: void handle_vm86_fault(CPUX86State *env);
1.1.1.5 root 223: int do_vm86(CPUX86State *env, long subfunction, abi_ulong v86_addr);
224: #elif defined(TARGET_SPARC64)
225: void sparc64_set_context(CPUSPARCState *env);
226: void sparc64_get_context(CPUSPARCState *env);
1.1 root 227: #endif
228:
229: /* mmap.c */
1.1.1.5 root 230: int target_mprotect(abi_ulong start, abi_ulong len, int prot);
231: abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
232: int flags, int fd, abi_ulong offset);
233: int target_munmap(abi_ulong start, abi_ulong len);
234: abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size,
235: abi_ulong new_size, unsigned long flags,
236: abi_ulong new_addr);
237: int target_msync(abi_ulong start, abi_ulong len, int flags);
1.1.1.6 root 238: extern unsigned long last_brk;
239: void mmap_lock(void);
240: void mmap_unlock(void);
1.1.1.7 ! root 241: abi_ulong mmap_find_vma(abi_ulong, abi_ulong);
! 242: void cpu_list_lock(void);
! 243: void cpu_list_unlock(void);
1.1.1.6 root 244: #if defined(USE_NPTL)
245: void mmap_fork_start(void);
246: void mmap_fork_end(int child);
247: #endif
248:
249: /* main.c */
250: extern unsigned long x86_stack_size;
1.1 root 251:
252: /* user access */
253:
254: #define VERIFY_READ 0
1.1.1.5 root 255: #define VERIFY_WRITE 1 /* implies read access */
1.1 root 256:
1.1.1.5 root 257: static inline int access_ok(int type, abi_ulong addr, abi_ulong size)
258: {
259: return page_check_range((target_ulong)addr, size,
260: (type == VERIFY_READ) ? PAGE_READ : (PAGE_READ | PAGE_WRITE)) == 0;
261: }
1.1 root 262:
1.1.1.5 root 263: /* NOTE __get_user and __put_user use host pointers and don't check access. */
264: /* These are usually used to access struct data members once the
265: * struct has been locked - usually with lock_user_struct().
266: */
267: #define __put_user(x, hptr)\
1.1 root 268: ({\
1.1.1.5 root 269: int size = sizeof(*hptr);\
1.1 root 270: switch(size) {\
271: case 1:\
1.1.1.5 root 272: *(uint8_t *)(hptr) = (uint8_t)(typeof(*hptr))(x);\
1.1 root 273: break;\
274: case 2:\
1.1.1.7 ! root 275: *(uint16_t *)(hptr) = tswap16((uint16_t)(typeof(*hptr))(x));\
1.1 root 276: break;\
277: case 4:\
1.1.1.7 ! root 278: *(uint32_t *)(hptr) = tswap32((uint32_t)(typeof(*hptr))(x));\
1.1 root 279: break;\
280: case 8:\
1.1.1.5 root 281: *(uint64_t *)(hptr) = tswap64((typeof(*hptr))(x));\
1.1 root 282: break;\
283: default:\
284: abort();\
285: }\
286: 0;\
287: })
288:
1.1.1.5 root 289: #define __get_user(x, hptr) \
1.1 root 290: ({\
1.1.1.5 root 291: int size = sizeof(*hptr);\
1.1 root 292: switch(size) {\
293: case 1:\
1.1.1.5 root 294: x = (typeof(*hptr))*(uint8_t *)(hptr);\
1.1 root 295: break;\
296: case 2:\
1.1.1.5 root 297: x = (typeof(*hptr))tswap16(*(uint16_t *)(hptr));\
1.1 root 298: break;\
299: case 4:\
1.1.1.5 root 300: x = (typeof(*hptr))tswap32(*(uint32_t *)(hptr));\
1.1 root 301: break;\
302: case 8:\
1.1.1.5 root 303: x = (typeof(*hptr))tswap64(*(uint64_t *)(hptr));\
1.1 root 304: break;\
305: default:\
1.1.1.5 root 306: /* avoid warning */\
307: x = 0;\
1.1 root 308: abort();\
309: }\
310: 0;\
311: })
312:
1.1.1.5 root 313: /* put_user()/get_user() take a guest address and check access */
314: /* These are usually used to access an atomic data type, such as an int,
315: * that has been passed by address. These internally perform locking
316: * and unlocking on the data type.
317: */
318: #define put_user(x, gaddr, target_type) \
319: ({ \
320: abi_ulong __gaddr = (gaddr); \
321: target_type *__hptr; \
322: abi_long __ret; \
323: if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \
324: __ret = __put_user((x), __hptr); \
325: unlock_user(__hptr, __gaddr, sizeof(target_type)); \
326: } else \
327: __ret = -TARGET_EFAULT; \
328: __ret; \
1.1 root 329: })
330:
1.1.1.5 root 331: #define get_user(x, gaddr, target_type) \
332: ({ \
333: abi_ulong __gaddr = (gaddr); \
334: target_type *__hptr; \
335: abi_long __ret; \
336: if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \
337: __ret = __get_user((x), __hptr); \
338: unlock_user(__hptr, __gaddr, 0); \
339: } else { \
340: /* avoid warning */ \
341: (x) = 0; \
342: __ret = -TARGET_EFAULT; \
343: } \
344: __ret; \
1.1 root 345: })
346:
1.1.1.5 root 347: #define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong)
348: #define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long)
349: #define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t)
350: #define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t)
351: #define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t)
352: #define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t)
353: #define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t)
354: #define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t)
355: #define put_user_u8(x, gaddr) put_user((x), (gaddr), uint8_t)
356: #define put_user_s8(x, gaddr) put_user((x), (gaddr), int8_t)
357:
358: #define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong)
359: #define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long)
360: #define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t)
361: #define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t)
362: #define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t)
363: #define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t)
364: #define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t)
365: #define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t)
366: #define get_user_u8(x, gaddr) get_user((x), (gaddr), uint8_t)
367: #define get_user_s8(x, gaddr) get_user((x), (gaddr), int8_t)
368:
369: /* copy_from_user() and copy_to_user() are usually used to copy data
370: * buffers between the target and host. These internally perform
371: * locking/unlocking of the memory.
372: */
373: abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len);
374: abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len);
375:
1.1.1.2 root 376: /* Functions for accessing guest memory. The tget and tput functions
377: read/write single values, byteswapping as neccessary. The lock_user
378: gets a pointer to a contiguous area of guest memory, but does not perform
379: and byteswapping. lock_user may return either a pointer to the guest
380: memory, or a temporary buffer. */
381:
382: /* Lock an area of guest memory into the host. If copy is true then the
383: host area will have the same contents as the guest. */
1.1.1.5 root 384: static inline void *lock_user(int type, abi_ulong guest_addr, long len, int copy)
1.1.1.2 root 385: {
1.1.1.5 root 386: if (!access_ok(type, guest_addr, len))
387: return NULL;
1.1.1.2 root 388: #ifdef DEBUG_REMAP
1.1.1.5 root 389: {
390: void *addr;
391: addr = malloc(len);
392: if (copy)
393: memcpy(addr, g2h(guest_addr), len);
394: else
395: memset(addr, 0, len);
396: return addr;
397: }
1.1.1.2 root 398: #else
399: return g2h(guest_addr);
400: #endif
1.1 root 401: }
402:
1.1.1.5 root 403: /* Unlock an area of guest memory. The first LEN bytes must be
1.1.1.6 root 404: flushed back to guest memory. host_ptr = NULL is explicitly
1.1.1.5 root 405: allowed and does nothing. */
406: static inline void unlock_user(void *host_ptr, abi_ulong guest_addr,
407: long len)
1.1.1.2 root 408: {
1.1.1.5 root 409:
1.1.1.2 root 410: #ifdef DEBUG_REMAP
1.1.1.5 root 411: if (!host_ptr)
412: return;
413: if (host_ptr == g2h(guest_addr))
1.1.1.2 root 414: return;
415: if (len > 0)
1.1.1.5 root 416: memcpy(g2h(guest_addr), host_ptr, len);
417: free(host_ptr);
1.1.1.2 root 418: #endif
1.1 root 419: }
420:
1.1.1.5 root 421: /* Return the length of a string in target memory or -TARGET_EFAULT if
422: access error. */
423: abi_long target_strlen(abi_ulong gaddr);
1.1 root 424:
1.1.1.2 root 425: /* Like lock_user but for null terminated strings. */
1.1.1.5 root 426: static inline void *lock_user_string(abi_ulong guest_addr)
1.1.1.2 root 427: {
1.1.1.5 root 428: abi_long len;
429: len = target_strlen(guest_addr);
430: if (len < 0)
431: return NULL;
432: return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1);
1.1.1.2 root 433: }
434:
435: /* Helper macros for locking/ulocking a target struct. */
1.1.1.5 root 436: #define lock_user_struct(type, host_ptr, guest_addr, copy) \
437: (host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy))
438: #define unlock_user_struct(host_ptr, guest_addr, copy) \
1.1.1.2 root 439: unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0)
440:
1.1.1.6 root 441: #if defined(USE_NPTL)
442: #include <pthread.h>
443: #endif
444:
1.1 root 445: #endif /* QEMU_H */
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