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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"
1.1.1.8 ! root 21: #include "qemu-queue.h"
1.1 root 22:
1.1.1.8 ! root 23: #if defined(CONFIG_USE_NPTL)
1.1.1.6 root 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
1.1.1.8 ! root 107: #ifdef CONFIG_USE_NPTL
1.1.1.7 root 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;
1.1.1.8 ! root 136: #if defined(CONFIG_USE_GUEST_BASE)
! 137: extern unsigned long mmap_min_addr;
! 138: #endif
1.1 root 139:
1.1.1.3 root 140: /* ??? See if we can avoid exposing so much of the loader internals. */
141: /*
142: * MAX_ARG_PAGES defines the number of pages allocated for arguments
143: * and envelope for the new program. 32 should suffice, this gives
144: * a maximum env+arg of 128kB w/4KB pages!
145: */
1.1.1.7 root 146: #define MAX_ARG_PAGES 33
1.1.1.3 root 147:
148: /*
1.1.1.5 root 149: * This structure is used to hold the arguments that are
1.1.1.3 root 150: * used when loading binaries.
151: */
152: struct linux_binprm {
153: char buf[128];
154: void *page[MAX_ARG_PAGES];
1.1.1.5 root 155: abi_ulong p;
1.1.1.3 root 156: int fd;
157: int e_uid, e_gid;
158: int argc, envc;
159: char **argv;
160: char **envp;
161: char * filename; /* Name of binary */
1.1.1.7 root 162: int (*core_dump)(int, const CPUState *); /* coredump routine */
1.1.1.3 root 163: };
164:
165: void do_init_thread(struct target_pt_regs *regs, struct image_info *infop);
1.1.1.5 root 166: abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp,
167: abi_ulong stringp, int push_ptr);
168: int loader_exec(const char * filename, char ** argv, char ** envp,
1.1.1.7 root 169: struct target_pt_regs * regs, struct image_info *infop,
170: struct linux_binprm *);
1.1 root 171:
1.1.1.3 root 172: int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
173: struct image_info * info);
174: int load_flt_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
175: struct image_info * info);
1.1.1.5 root 176: #ifdef TARGET_HAS_ELFLOAD32
177: int load_elf_binary_multi(struct linux_binprm *bprm,
178: struct target_pt_regs *regs,
179: struct image_info *info);
180: #endif
1.1.1.3 root 181:
1.1.1.5 root 182: abi_long memcpy_to_target(abi_ulong dest, const void *src,
183: unsigned long len);
184: void target_set_brk(abi_ulong new_brk);
185: abi_long do_brk(abi_ulong new_brk);
1.1 root 186: void syscall_init(void);
1.1.1.5 root 187: abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
188: abi_long arg2, abi_long arg3, abi_long arg4,
189: abi_long arg5, abi_long arg6);
1.1 root 190: void gemu_log(const char *fmt, ...) __attribute__((format(printf,1,2)));
1.1.1.6 root 191: extern THREAD CPUState *thread_env;
1.1 root 192: void cpu_loop(CPUState *env);
1.1.1.5 root 193: char *target_strerror(int err);
1.1.1.6 root 194: int get_osversion(void);
195: void fork_start(void);
196: void fork_end(int child);
1.1 root 197:
1.1.1.6 root 198: #include "qemu-log.h"
1.1 root 199:
1.1.1.5 root 200: /* strace.c */
201: void print_syscall(int num,
202: abi_long arg1, abi_long arg2, abi_long arg3,
203: abi_long arg4, abi_long arg5, abi_long arg6);
204: void print_syscall_ret(int num, abi_long arg1);
205: extern int do_strace;
206:
1.1 root 207: /* signal.c */
1.1.1.6 root 208: void process_pending_signals(CPUState *cpu_env);
1.1 root 209: void signal_init(void);
1.1.1.6 root 210: int queue_signal(CPUState *env, int sig, target_siginfo_t *info);
1.1 root 211: void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info);
212: void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo);
1.1.1.6 root 213: int target_to_host_signal(int sig);
1.1.1.7 root 214: int host_to_target_signal(int sig);
1.1 root 215: long do_sigreturn(CPUState *env);
216: long do_rt_sigreturn(CPUState *env);
1.1.1.5 root 217: abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp);
1.1 root 218:
219: #ifdef TARGET_I386
220: /* vm86.c */
221: void save_v86_state(CPUX86State *env);
222: void handle_vm86_trap(CPUX86State *env, int trapno);
223: void handle_vm86_fault(CPUX86State *env);
1.1.1.5 root 224: int do_vm86(CPUX86State *env, long subfunction, abi_ulong v86_addr);
225: #elif defined(TARGET_SPARC64)
226: void sparc64_set_context(CPUSPARCState *env);
227: void sparc64_get_context(CPUSPARCState *env);
1.1 root 228: #endif
229:
230: /* mmap.c */
1.1.1.5 root 231: int target_mprotect(abi_ulong start, abi_ulong len, int prot);
232: abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
233: int flags, int fd, abi_ulong offset);
234: int target_munmap(abi_ulong start, abi_ulong len);
235: abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size,
236: abi_ulong new_size, unsigned long flags,
237: abi_ulong new_addr);
238: int target_msync(abi_ulong start, abi_ulong len, int flags);
1.1.1.6 root 239: extern unsigned long last_brk;
240: void mmap_lock(void);
241: void mmap_unlock(void);
1.1.1.7 root 242: abi_ulong mmap_find_vma(abi_ulong, abi_ulong);
243: void cpu_list_lock(void);
244: void cpu_list_unlock(void);
1.1.1.8 ! root 245: #if defined(CONFIG_USE_NPTL)
1.1.1.6 root 246: void mmap_fork_start(void);
247: void mmap_fork_end(int child);
248: #endif
249:
250: /* main.c */
251: extern unsigned long x86_stack_size;
1.1 root 252:
253: /* user access */
254:
255: #define VERIFY_READ 0
1.1.1.5 root 256: #define VERIFY_WRITE 1 /* implies read access */
1.1 root 257:
1.1.1.5 root 258: static inline int access_ok(int type, abi_ulong addr, abi_ulong size)
259: {
260: return page_check_range((target_ulong)addr, size,
261: (type == VERIFY_READ) ? PAGE_READ : (PAGE_READ | PAGE_WRITE)) == 0;
262: }
1.1 root 263:
1.1.1.5 root 264: /* NOTE __get_user and __put_user use host pointers and don't check access. */
265: /* These are usually used to access struct data members once the
266: * struct has been locked - usually with lock_user_struct().
267: */
268: #define __put_user(x, hptr)\
1.1 root 269: ({\
1.1.1.5 root 270: int size = sizeof(*hptr);\
1.1 root 271: switch(size) {\
272: case 1:\
1.1.1.5 root 273: *(uint8_t *)(hptr) = (uint8_t)(typeof(*hptr))(x);\
1.1 root 274: break;\
275: case 2:\
1.1.1.7 root 276: *(uint16_t *)(hptr) = tswap16((uint16_t)(typeof(*hptr))(x));\
1.1 root 277: break;\
278: case 4:\
1.1.1.7 root 279: *(uint32_t *)(hptr) = tswap32((uint32_t)(typeof(*hptr))(x));\
1.1 root 280: break;\
281: case 8:\
1.1.1.5 root 282: *(uint64_t *)(hptr) = tswap64((typeof(*hptr))(x));\
1.1 root 283: break;\
284: default:\
285: abort();\
286: }\
287: 0;\
288: })
289:
1.1.1.5 root 290: #define __get_user(x, hptr) \
1.1 root 291: ({\
1.1.1.5 root 292: int size = sizeof(*hptr);\
1.1 root 293: switch(size) {\
294: case 1:\
1.1.1.5 root 295: x = (typeof(*hptr))*(uint8_t *)(hptr);\
1.1 root 296: break;\
297: case 2:\
1.1.1.5 root 298: x = (typeof(*hptr))tswap16(*(uint16_t *)(hptr));\
1.1 root 299: break;\
300: case 4:\
1.1.1.5 root 301: x = (typeof(*hptr))tswap32(*(uint32_t *)(hptr));\
1.1 root 302: break;\
303: case 8:\
1.1.1.5 root 304: x = (typeof(*hptr))tswap64(*(uint64_t *)(hptr));\
1.1 root 305: break;\
306: default:\
1.1.1.5 root 307: /* avoid warning */\
308: x = 0;\
1.1 root 309: abort();\
310: }\
311: 0;\
312: })
313:
1.1.1.5 root 314: /* put_user()/get_user() take a guest address and check access */
315: /* These are usually used to access an atomic data type, such as an int,
316: * that has been passed by address. These internally perform locking
317: * and unlocking on the data type.
318: */
319: #define put_user(x, gaddr, target_type) \
320: ({ \
321: abi_ulong __gaddr = (gaddr); \
322: target_type *__hptr; \
323: abi_long __ret; \
324: if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \
325: __ret = __put_user((x), __hptr); \
326: unlock_user(__hptr, __gaddr, sizeof(target_type)); \
327: } else \
328: __ret = -TARGET_EFAULT; \
329: __ret; \
1.1 root 330: })
331:
1.1.1.5 root 332: #define get_user(x, gaddr, target_type) \
333: ({ \
334: abi_ulong __gaddr = (gaddr); \
335: target_type *__hptr; \
336: abi_long __ret; \
337: if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \
338: __ret = __get_user((x), __hptr); \
339: unlock_user(__hptr, __gaddr, 0); \
340: } else { \
341: /* avoid warning */ \
342: (x) = 0; \
343: __ret = -TARGET_EFAULT; \
344: } \
345: __ret; \
1.1 root 346: })
347:
1.1.1.5 root 348: #define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong)
349: #define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long)
350: #define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t)
351: #define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t)
352: #define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t)
353: #define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t)
354: #define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t)
355: #define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t)
356: #define put_user_u8(x, gaddr) put_user((x), (gaddr), uint8_t)
357: #define put_user_s8(x, gaddr) put_user((x), (gaddr), int8_t)
358:
359: #define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong)
360: #define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long)
361: #define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t)
362: #define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t)
363: #define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t)
364: #define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t)
365: #define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t)
366: #define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t)
367: #define get_user_u8(x, gaddr) get_user((x), (gaddr), uint8_t)
368: #define get_user_s8(x, gaddr) get_user((x), (gaddr), int8_t)
369:
370: /* copy_from_user() and copy_to_user() are usually used to copy data
371: * buffers between the target and host. These internally perform
372: * locking/unlocking of the memory.
373: */
374: abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len);
375: abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len);
376:
1.1.1.2 root 377: /* Functions for accessing guest memory. The tget and tput functions
378: read/write single values, byteswapping as neccessary. The lock_user
379: gets a pointer to a contiguous area of guest memory, but does not perform
380: and byteswapping. lock_user may return either a pointer to the guest
381: memory, or a temporary buffer. */
382:
383: /* Lock an area of guest memory into the host. If copy is true then the
384: host area will have the same contents as the guest. */
1.1.1.5 root 385: static inline void *lock_user(int type, abi_ulong guest_addr, long len, int copy)
1.1.1.2 root 386: {
1.1.1.5 root 387: if (!access_ok(type, guest_addr, len))
388: return NULL;
1.1.1.2 root 389: #ifdef DEBUG_REMAP
1.1.1.5 root 390: {
391: void *addr;
392: addr = malloc(len);
393: if (copy)
394: memcpy(addr, g2h(guest_addr), len);
395: else
396: memset(addr, 0, len);
397: return addr;
398: }
1.1.1.2 root 399: #else
400: return g2h(guest_addr);
401: #endif
1.1 root 402: }
403:
1.1.1.5 root 404: /* Unlock an area of guest memory. The first LEN bytes must be
1.1.1.6 root 405: flushed back to guest memory. host_ptr = NULL is explicitly
1.1.1.5 root 406: allowed and does nothing. */
407: static inline void unlock_user(void *host_ptr, abi_ulong guest_addr,
408: long len)
1.1.1.2 root 409: {
1.1.1.5 root 410:
1.1.1.2 root 411: #ifdef DEBUG_REMAP
1.1.1.5 root 412: if (!host_ptr)
413: return;
414: if (host_ptr == g2h(guest_addr))
1.1.1.2 root 415: return;
416: if (len > 0)
1.1.1.5 root 417: memcpy(g2h(guest_addr), host_ptr, len);
418: free(host_ptr);
1.1.1.2 root 419: #endif
1.1 root 420: }
421:
1.1.1.5 root 422: /* Return the length of a string in target memory or -TARGET_EFAULT if
423: access error. */
424: abi_long target_strlen(abi_ulong gaddr);
1.1 root 425:
1.1.1.2 root 426: /* Like lock_user but for null terminated strings. */
1.1.1.5 root 427: static inline void *lock_user_string(abi_ulong guest_addr)
1.1.1.2 root 428: {
1.1.1.5 root 429: abi_long len;
430: len = target_strlen(guest_addr);
431: if (len < 0)
432: return NULL;
433: return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1);
1.1.1.2 root 434: }
435:
436: /* Helper macros for locking/ulocking a target struct. */
1.1.1.5 root 437: #define lock_user_struct(type, host_ptr, guest_addr, copy) \
438: (host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy))
439: #define unlock_user_struct(host_ptr, guest_addr, copy) \
1.1.1.2 root 440: unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0)
441:
1.1.1.8 ! root 442: #if defined(CONFIG_USE_NPTL)
1.1.1.6 root 443: #include <pthread.h>
444: #endif
445:
1.1 root 446: #endif /* QEMU_H */
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