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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 {
1.1.1.10 root 34: abi_ulong load_bias;
1.1.1.5 root 35: abi_ulong load_addr;
36: abi_ulong start_code;
37: abi_ulong end_code;
38: abi_ulong start_data;
39: abi_ulong end_data;
40: abi_ulong start_brk;
41: abi_ulong brk;
42: abi_ulong start_mmap;
43: abi_ulong mmap;
44: abi_ulong rss;
45: abi_ulong start_stack;
1.1.1.9 root 46: abi_ulong stack_limit;
1.1.1.5 root 47: abi_ulong entry;
48: abi_ulong code_offset;
49: abi_ulong data_offset;
1.1.1.7 root 50: abi_ulong saved_auxv;
51: abi_ulong arg_start;
52: abi_ulong arg_end;
1.1 root 53: int personality;
1.1.1.11 root 54: #ifdef CONFIG_USE_FDPIC
55: abi_ulong loadmap_addr;
56: uint16_t nsegs;
57: void *loadsegs;
58: abi_ulong pt_dynamic_addr;
59: struct image_info *other_info;
60: #endif
1.1 root 61: };
62:
63: #ifdef TARGET_I386
64: /* Information about the current linux thread */
65: struct vm86_saved_state {
66: uint32_t eax; /* return code */
67: uint32_t ebx;
68: uint32_t ecx;
69: uint32_t edx;
70: uint32_t esi;
71: uint32_t edi;
72: uint32_t ebp;
73: uint32_t esp;
74: uint32_t eflags;
75: uint32_t eip;
76: uint16_t cs, ss, ds, es, fs, gs;
77: };
78: #endif
79:
80: #ifdef TARGET_ARM
81: /* FPU emulator */
82: #include "nwfpe/fpa11.h"
83: #endif
84:
1.1.1.6 root 85: #define MAX_SIGQUEUE_SIZE 1024
86:
87: struct sigqueue {
88: struct sigqueue *next;
89: target_siginfo_t info;
90: };
91:
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 */
97: };
98:
1.1 root 99: /* NOTE: we force a big alignment so that the stack stored after is
100: aligned too */
101: typedef struct TaskState {
1.1.1.7 root 102: pid_t ts_tid; /* tid (or pid) of this task */
1.1 root 103: #ifdef TARGET_ARM
104: /* FPA state */
105: FPA11 fpa;
106: int swi_errno;
107: #endif
1.1.1.11 root 108: #ifdef TARGET_UNICORE32
109: int swi_errno;
110: #endif
1.1.1.5 root 111: #if defined(TARGET_I386) && !defined(TARGET_X86_64)
112: abi_ulong target_v86;
1.1 root 113: struct vm86_saved_state vm86_saved_regs;
114: struct target_vm86plus_struct vm86plus;
115: uint32_t v86flags;
116: uint32_t v86mask;
117: #endif
1.1.1.8 root 118: #ifdef CONFIG_USE_NPTL
1.1.1.7 root 119: abi_ulong child_tidptr;
120: #endif
1.1.1.4 root 121: #ifdef TARGET_M68K
122: int sim_syscalls;
123: #endif
1.1.1.11 root 124: #if defined(TARGET_ARM) || defined(TARGET_M68K) || defined(TARGET_UNICORE32)
1.1.1.5 root 125: /* Extra fields for semihosted binaries. */
126: uint32_t stack_base;
127: uint32_t heap_base;
128: uint32_t heap_limit;
129: #endif
1.1 root 130: int used; /* non zero if used */
1.1.1.3 root 131: struct image_info *info;
1.1.1.7 root 132: struct linux_binprm *bprm;
1.1.1.6 root 133:
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 */
1.1 root 138: } __attribute__((aligned(16))) TaskState;
139:
1.1.1.6 root 140: extern char *exec_path;
141: void init_task_state(TaskState *ts);
1.1.1.7 root 142: void task_settid(TaskState *);
143: void stop_all_tasks(void);
1.1.1.3 root 144: extern const char *qemu_uname_release;
1.1.1.8 root 145: extern unsigned long mmap_min_addr;
1.1 root 146:
1.1.1.3 root 147: /* ??? See if we can avoid exposing so much of the loader internals. */
148: /*
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!
152: */
1.1.1.7 root 153: #define MAX_ARG_PAGES 33
1.1.1.3 root 154:
1.1.1.10 root 155: /* Read a good amount of data initially, to hopefully get all the
156: program headers loaded. */
157: #define BPRM_BUF_SIZE 1024
158:
1.1.1.3 root 159: /*
1.1.1.5 root 160: * This structure is used to hold the arguments that are
1.1.1.3 root 161: * used when loading binaries.
162: */
163: struct linux_binprm {
1.1.1.10 root 164: char buf[BPRM_BUF_SIZE] __attribute__((aligned));
1.1.1.3 root 165: void *page[MAX_ARG_PAGES];
1.1.1.5 root 166: abi_ulong p;
1.1.1.3 root 167: int fd;
168: int e_uid, e_gid;
169: int argc, envc;
170: char **argv;
171: char **envp;
172: char * filename; /* Name of binary */
1.1.1.7 root 173: int (*core_dump)(int, const CPUState *); /* coredump routine */
1.1.1.3 root 174: };
175:
176: void do_init_thread(struct target_pt_regs *regs, struct image_info *infop);
1.1.1.5 root 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,
1.1.1.7 root 180: struct target_pt_regs * regs, struct image_info *infop,
181: struct linux_binprm *);
1.1 root 182:
1.1.1.3 root 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);
187:
1.1.1.5 root 188: abi_long memcpy_to_target(abi_ulong dest, const void *src,
189: unsigned long len);
190: void target_set_brk(abi_ulong new_brk);
191: abi_long do_brk(abi_ulong new_brk);
1.1 root 192: void syscall_init(void);
1.1.1.5 root 193: abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
194: abi_long arg2, abi_long arg3, abi_long arg4,
1.1.1.11 root 195: abi_long arg5, abi_long arg6, abi_long arg7,
196: abi_long arg8);
1.1.1.10 root 197: void gemu_log(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
1.1.1.6 root 198: extern THREAD CPUState *thread_env;
1.1 root 199: void cpu_loop(CPUState *env);
1.1.1.5 root 200: char *target_strerror(int err);
1.1.1.6 root 201: int get_osversion(void);
202: void fork_start(void);
203: void fork_end(int child);
1.1 root 204:
1.1.1.12! root 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.
! 208: */
! 209: bool guest_validate_base(unsigned long guest_base);
! 210:
1.1.1.6 root 211: #include "qemu-log.h"
1.1 root 212:
1.1.1.5 root 213: /* strace.c */
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;
219:
1.1 root 220: /* signal.c */
1.1.1.6 root 221: void process_pending_signals(CPUState *cpu_env);
1.1 root 222: void signal_init(void);
1.1.1.6 root 223: int queue_signal(CPUState *env, int sig, target_siginfo_t *info);
1.1 root 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);
1.1.1.6 root 226: int target_to_host_signal(int sig);
1.1.1.7 root 227: int host_to_target_signal(int sig);
1.1 root 228: long do_sigreturn(CPUState *env);
229: long do_rt_sigreturn(CPUState *env);
1.1.1.5 root 230: abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp);
1.1 root 231:
232: #ifdef TARGET_I386
233: /* vm86.c */
234: void save_v86_state(CPUX86State *env);
235: void handle_vm86_trap(CPUX86State *env, int trapno);
236: void handle_vm86_fault(CPUX86State *env);
1.1.1.5 root 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);
1.1 root 241: #endif
242:
243: /* mmap.c */
1.1.1.5 root 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,
250: abi_ulong new_addr);
251: int target_msync(abi_ulong start, abi_ulong len, int flags);
1.1.1.6 root 252: extern unsigned long last_brk;
253: void mmap_lock(void);
254: void mmap_unlock(void);
1.1.1.7 root 255: abi_ulong mmap_find_vma(abi_ulong, abi_ulong);
256: void cpu_list_lock(void);
257: void cpu_list_unlock(void);
1.1.1.8 root 258: #if defined(CONFIG_USE_NPTL)
1.1.1.6 root 259: void mmap_fork_start(void);
260: void mmap_fork_end(int child);
261: #endif
262:
263: /* main.c */
1.1.1.9 root 264: extern unsigned long guest_stack_size;
1.1 root 265:
266: /* user access */
267:
268: #define VERIFY_READ 0
1.1.1.5 root 269: #define VERIFY_WRITE 1 /* implies read access */
1.1 root 270:
1.1.1.5 root 271: static inline int access_ok(int type, abi_ulong addr, abi_ulong size)
272: {
273: return page_check_range((target_ulong)addr, size,
274: (type == VERIFY_READ) ? PAGE_READ : (PAGE_READ | PAGE_WRITE)) == 0;
275: }
1.1 root 276:
1.1.1.5 root 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().
280: */
281: #define __put_user(x, hptr)\
1.1 root 282: ({\
1.1.1.10 root 283: switch(sizeof(*hptr)) {\
1.1 root 284: case 1:\
1.1.1.5 root 285: *(uint8_t *)(hptr) = (uint8_t)(typeof(*hptr))(x);\
1.1 root 286: break;\
287: case 2:\
1.1.1.7 root 288: *(uint16_t *)(hptr) = tswap16((uint16_t)(typeof(*hptr))(x));\
1.1 root 289: break;\
290: case 4:\
1.1.1.7 root 291: *(uint32_t *)(hptr) = tswap32((uint32_t)(typeof(*hptr))(x));\
1.1 root 292: break;\
293: case 8:\
1.1.1.5 root 294: *(uint64_t *)(hptr) = tswap64((typeof(*hptr))(x));\
1.1 root 295: break;\
296: default:\
297: abort();\
298: }\
299: 0;\
300: })
301:
1.1.1.5 root 302: #define __get_user(x, hptr) \
1.1 root 303: ({\
1.1.1.10 root 304: switch(sizeof(*hptr)) {\
1.1 root 305: case 1:\
1.1.1.5 root 306: x = (typeof(*hptr))*(uint8_t *)(hptr);\
1.1 root 307: break;\
308: case 2:\
1.1.1.5 root 309: x = (typeof(*hptr))tswap16(*(uint16_t *)(hptr));\
1.1 root 310: break;\
311: case 4:\
1.1.1.5 root 312: x = (typeof(*hptr))tswap32(*(uint32_t *)(hptr));\
1.1 root 313: break;\
314: case 8:\
1.1.1.5 root 315: x = (typeof(*hptr))tswap64(*(uint64_t *)(hptr));\
1.1 root 316: break;\
317: default:\
1.1.1.5 root 318: /* avoid warning */\
319: x = 0;\
1.1 root 320: abort();\
321: }\
322: 0;\
323: })
324:
1.1.1.5 root 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.
329: */
330: #define put_user(x, gaddr, target_type) \
331: ({ \
332: abi_ulong __gaddr = (gaddr); \
333: target_type *__hptr; \
334: abi_long __ret; \
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)); \
338: } else \
339: __ret = -TARGET_EFAULT; \
340: __ret; \
1.1 root 341: })
342:
1.1.1.5 root 343: #define get_user(x, gaddr, target_type) \
344: ({ \
345: abi_ulong __gaddr = (gaddr); \
346: target_type *__hptr; \
347: abi_long __ret; \
348: if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \
349: __ret = __get_user((x), __hptr); \
350: unlock_user(__hptr, __gaddr, 0); \
351: } else { \
352: /* avoid warning */ \
353: (x) = 0; \
354: __ret = -TARGET_EFAULT; \
355: } \
356: __ret; \
1.1 root 357: })
358:
1.1.1.5 root 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)
369:
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)
380:
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.
384: */
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);
387:
1.1.1.2 root 388: /* Functions for accessing guest memory. The tget and tput functions
1.1.1.11 root 389: read/write single values, byteswapping as necessary. The lock_user
1.1.1.2 root 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. */
393:
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. */
1.1.1.5 root 396: static inline void *lock_user(int type, abi_ulong guest_addr, long len, int copy)
1.1.1.2 root 397: {
1.1.1.5 root 398: if (!access_ok(type, guest_addr, len))
399: return NULL;
1.1.1.2 root 400: #ifdef DEBUG_REMAP
1.1.1.5 root 401: {
402: void *addr;
403: addr = malloc(len);
404: if (copy)
405: memcpy(addr, g2h(guest_addr), len);
406: else
407: memset(addr, 0, len);
408: return addr;
409: }
1.1.1.2 root 410: #else
411: return g2h(guest_addr);
412: #endif
1.1 root 413: }
414:
1.1.1.5 root 415: /* Unlock an area of guest memory. The first LEN bytes must be
1.1.1.6 root 416: flushed back to guest memory. host_ptr = NULL is explicitly
1.1.1.5 root 417: allowed and does nothing. */
418: static inline void unlock_user(void *host_ptr, abi_ulong guest_addr,
419: long len)
1.1.1.2 root 420: {
1.1.1.5 root 421:
1.1.1.2 root 422: #ifdef DEBUG_REMAP
1.1.1.5 root 423: if (!host_ptr)
424: return;
425: if (host_ptr == g2h(guest_addr))
1.1.1.2 root 426: return;
427: if (len > 0)
1.1.1.5 root 428: memcpy(g2h(guest_addr), host_ptr, len);
429: free(host_ptr);
1.1.1.2 root 430: #endif
1.1 root 431: }
432:
1.1.1.5 root 433: /* Return the length of a string in target memory or -TARGET_EFAULT if
434: access error. */
435: abi_long target_strlen(abi_ulong gaddr);
1.1 root 436:
1.1.1.2 root 437: /* Like lock_user but for null terminated strings. */
1.1.1.5 root 438: static inline void *lock_user_string(abi_ulong guest_addr)
1.1.1.2 root 439: {
1.1.1.5 root 440: abi_long len;
441: len = target_strlen(guest_addr);
442: if (len < 0)
443: return NULL;
444: return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1);
1.1.1.2 root 445: }
446:
447: /* Helper macros for locking/ulocking a target struct. */
1.1.1.5 root 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) \
1.1.1.2 root 451: unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0)
452:
1.1.1.8 root 453: #if defined(CONFIG_USE_NPTL)
1.1.1.6 root 454: #include <pthread.h>
455: #endif
456:
1.1 root 457: #endif /* QEMU_H */
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