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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;
54: };
55:
56: #ifdef TARGET_I386
57: /* Information about the current linux thread */
58: struct vm86_saved_state {
59: uint32_t eax; /* return code */
60: uint32_t ebx;
61: uint32_t ecx;
62: uint32_t edx;
63: uint32_t esi;
64: uint32_t edi;
65: uint32_t ebp;
66: uint32_t esp;
67: uint32_t eflags;
68: uint32_t eip;
69: uint16_t cs, ss, ds, es, fs, gs;
70: };
71: #endif
72:
73: #ifdef TARGET_ARM
74: /* FPU emulator */
75: #include "nwfpe/fpa11.h"
76: #endif
77:
1.1.1.6 root 78: #define MAX_SIGQUEUE_SIZE 1024
79:
80: struct sigqueue {
81: struct sigqueue *next;
82: target_siginfo_t info;
83: };
84:
85: struct emulated_sigtable {
86: int pending; /* true if signal is pending */
87: struct sigqueue *first;
88: struct sigqueue info; /* in order to always have memory for the
89: first signal, we put it here */
90: };
91:
1.1 root 92: /* NOTE: we force a big alignment so that the stack stored after is
93: aligned too */
94: typedef struct TaskState {
1.1.1.7 root 95: pid_t ts_tid; /* tid (or pid) of this task */
1.1 root 96: #ifdef TARGET_ARM
97: /* FPA state */
98: FPA11 fpa;
99: int swi_errno;
100: #endif
1.1.1.5 root 101: #if defined(TARGET_I386) && !defined(TARGET_X86_64)
102: abi_ulong target_v86;
1.1 root 103: struct vm86_saved_state vm86_saved_regs;
104: struct target_vm86plus_struct vm86plus;
105: uint32_t v86flags;
106: uint32_t v86mask;
107: #endif
1.1.1.8 root 108: #ifdef CONFIG_USE_NPTL
1.1.1.7 root 109: abi_ulong child_tidptr;
110: #endif
1.1.1.4 root 111: #ifdef TARGET_M68K
112: int sim_syscalls;
113: #endif
1.1.1.5 root 114: #if defined(TARGET_ARM) || defined(TARGET_M68K)
115: /* Extra fields for semihosted binaries. */
116: uint32_t stack_base;
117: uint32_t heap_base;
118: uint32_t heap_limit;
119: #endif
1.1 root 120: int used; /* non zero if used */
1.1.1.3 root 121: struct image_info *info;
1.1.1.7 root 122: struct linux_binprm *bprm;
1.1.1.6 root 123:
124: struct emulated_sigtable sigtab[TARGET_NSIG];
125: struct sigqueue sigqueue_table[MAX_SIGQUEUE_SIZE]; /* siginfo queue */
126: struct sigqueue *first_free; /* first free siginfo queue entry */
127: int signal_pending; /* non zero if a signal may be pending */
1.1 root 128: } __attribute__((aligned(16))) TaskState;
129:
1.1.1.6 root 130: extern char *exec_path;
131: void init_task_state(TaskState *ts);
1.1.1.7 root 132: void task_settid(TaskState *);
133: void stop_all_tasks(void);
1.1.1.3 root 134: extern const char *qemu_uname_release;
1.1.1.8 root 135: extern unsigned long mmap_min_addr;
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:
1.1.1.10! root 145: /* Read a good amount of data initially, to hopefully get all the
! 146: program headers loaded. */
! 147: #define BPRM_BUF_SIZE 1024
! 148:
1.1.1.3 root 149: /*
1.1.1.5 root 150: * This structure is used to hold the arguments that are
1.1.1.3 root 151: * used when loading binaries.
152: */
153: struct linux_binprm {
1.1.1.10! root 154: char buf[BPRM_BUF_SIZE] __attribute__((aligned));
1.1.1.3 root 155: void *page[MAX_ARG_PAGES];
1.1.1.5 root 156: abi_ulong p;
1.1.1.3 root 157: int fd;
158: int e_uid, e_gid;
159: int argc, envc;
160: char **argv;
161: char **envp;
162: char * filename; /* Name of binary */
1.1.1.7 root 163: int (*core_dump)(int, const CPUState *); /* coredump routine */
1.1.1.3 root 164: };
165:
166: void do_init_thread(struct target_pt_regs *regs, struct image_info *infop);
1.1.1.5 root 167: abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp,
168: abi_ulong stringp, int push_ptr);
169: int loader_exec(const char * filename, char ** argv, char ** envp,
1.1.1.7 root 170: struct target_pt_regs * regs, struct image_info *infop,
171: struct linux_binprm *);
1.1 root 172:
1.1.1.3 root 173: int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
174: struct image_info * info);
175: int load_flt_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
176: struct image_info * info);
177:
1.1.1.5 root 178: abi_long memcpy_to_target(abi_ulong dest, const void *src,
179: unsigned long len);
180: void target_set_brk(abi_ulong new_brk);
181: abi_long do_brk(abi_ulong new_brk);
1.1 root 182: void syscall_init(void);
1.1.1.5 root 183: abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
184: abi_long arg2, abi_long arg3, abi_long arg4,
185: abi_long arg5, abi_long arg6);
1.1.1.10! root 186: void gemu_log(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
1.1.1.6 root 187: extern THREAD CPUState *thread_env;
1.1 root 188: void cpu_loop(CPUState *env);
1.1.1.5 root 189: char *target_strerror(int err);
1.1.1.6 root 190: int get_osversion(void);
191: void fork_start(void);
192: void fork_end(int child);
1.1 root 193:
1.1.1.6 root 194: #include "qemu-log.h"
1.1 root 195:
1.1.1.5 root 196: /* strace.c */
197: void print_syscall(int num,
198: abi_long arg1, abi_long arg2, abi_long arg3,
199: abi_long arg4, abi_long arg5, abi_long arg6);
200: void print_syscall_ret(int num, abi_long arg1);
201: extern int do_strace;
202:
1.1 root 203: /* signal.c */
1.1.1.6 root 204: void process_pending_signals(CPUState *cpu_env);
1.1 root 205: void signal_init(void);
1.1.1.6 root 206: int queue_signal(CPUState *env, int sig, target_siginfo_t *info);
1.1 root 207: void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info);
208: void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo);
1.1.1.6 root 209: int target_to_host_signal(int sig);
1.1.1.7 root 210: int host_to_target_signal(int sig);
1.1 root 211: long do_sigreturn(CPUState *env);
212: long do_rt_sigreturn(CPUState *env);
1.1.1.5 root 213: abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp);
1.1 root 214:
215: #ifdef TARGET_I386
216: /* vm86.c */
217: void save_v86_state(CPUX86State *env);
218: void handle_vm86_trap(CPUX86State *env, int trapno);
219: void handle_vm86_fault(CPUX86State *env);
1.1.1.5 root 220: int do_vm86(CPUX86State *env, long subfunction, abi_ulong v86_addr);
221: #elif defined(TARGET_SPARC64)
222: void sparc64_set_context(CPUSPARCState *env);
223: void sparc64_get_context(CPUSPARCState *env);
1.1 root 224: #endif
225:
226: /* mmap.c */
1.1.1.5 root 227: int target_mprotect(abi_ulong start, abi_ulong len, int prot);
228: abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
229: int flags, int fd, abi_ulong offset);
230: int target_munmap(abi_ulong start, abi_ulong len);
231: abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size,
232: abi_ulong new_size, unsigned long flags,
233: abi_ulong new_addr);
234: int target_msync(abi_ulong start, abi_ulong len, int flags);
1.1.1.6 root 235: extern unsigned long last_brk;
236: void mmap_lock(void);
237: void mmap_unlock(void);
1.1.1.7 root 238: abi_ulong mmap_find_vma(abi_ulong, abi_ulong);
239: void cpu_list_lock(void);
240: void cpu_list_unlock(void);
1.1.1.8 root 241: #if defined(CONFIG_USE_NPTL)
1.1.1.6 root 242: void mmap_fork_start(void);
243: void mmap_fork_end(int child);
244: #endif
245:
246: /* main.c */
1.1.1.9 root 247: extern unsigned long guest_stack_size;
1.1 root 248:
249: /* user access */
250:
251: #define VERIFY_READ 0
1.1.1.5 root 252: #define VERIFY_WRITE 1 /* implies read access */
1.1 root 253:
1.1.1.5 root 254: static inline int access_ok(int type, abi_ulong addr, abi_ulong size)
255: {
256: return page_check_range((target_ulong)addr, size,
257: (type == VERIFY_READ) ? PAGE_READ : (PAGE_READ | PAGE_WRITE)) == 0;
258: }
1.1 root 259:
1.1.1.5 root 260: /* NOTE __get_user and __put_user use host pointers and don't check access. */
261: /* These are usually used to access struct data members once the
262: * struct has been locked - usually with lock_user_struct().
263: */
264: #define __put_user(x, hptr)\
1.1 root 265: ({\
1.1.1.10! root 266: switch(sizeof(*hptr)) {\
1.1 root 267: case 1:\
1.1.1.5 root 268: *(uint8_t *)(hptr) = (uint8_t)(typeof(*hptr))(x);\
1.1 root 269: break;\
270: case 2:\
1.1.1.7 root 271: *(uint16_t *)(hptr) = tswap16((uint16_t)(typeof(*hptr))(x));\
1.1 root 272: break;\
273: case 4:\
1.1.1.7 root 274: *(uint32_t *)(hptr) = tswap32((uint32_t)(typeof(*hptr))(x));\
1.1 root 275: break;\
276: case 8:\
1.1.1.5 root 277: *(uint64_t *)(hptr) = tswap64((typeof(*hptr))(x));\
1.1 root 278: break;\
279: default:\
280: abort();\
281: }\
282: 0;\
283: })
284:
1.1.1.5 root 285: #define __get_user(x, hptr) \
1.1 root 286: ({\
1.1.1.10! root 287: switch(sizeof(*hptr)) {\
1.1 root 288: case 1:\
1.1.1.5 root 289: x = (typeof(*hptr))*(uint8_t *)(hptr);\
1.1 root 290: break;\
291: case 2:\
1.1.1.5 root 292: x = (typeof(*hptr))tswap16(*(uint16_t *)(hptr));\
1.1 root 293: break;\
294: case 4:\
1.1.1.5 root 295: x = (typeof(*hptr))tswap32(*(uint32_t *)(hptr));\
1.1 root 296: break;\
297: case 8:\
1.1.1.5 root 298: x = (typeof(*hptr))tswap64(*(uint64_t *)(hptr));\
1.1 root 299: break;\
300: default:\
1.1.1.5 root 301: /* avoid warning */\
302: x = 0;\
1.1 root 303: abort();\
304: }\
305: 0;\
306: })
307:
1.1.1.5 root 308: /* put_user()/get_user() take a guest address and check access */
309: /* These are usually used to access an atomic data type, such as an int,
310: * that has been passed by address. These internally perform locking
311: * and unlocking on the data type.
312: */
313: #define put_user(x, gaddr, target_type) \
314: ({ \
315: abi_ulong __gaddr = (gaddr); \
316: target_type *__hptr; \
317: abi_long __ret; \
318: if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \
319: __ret = __put_user((x), __hptr); \
320: unlock_user(__hptr, __gaddr, sizeof(target_type)); \
321: } else \
322: __ret = -TARGET_EFAULT; \
323: __ret; \
1.1 root 324: })
325:
1.1.1.5 root 326: #define get_user(x, gaddr, target_type) \
327: ({ \
328: abi_ulong __gaddr = (gaddr); \
329: target_type *__hptr; \
330: abi_long __ret; \
331: if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \
332: __ret = __get_user((x), __hptr); \
333: unlock_user(__hptr, __gaddr, 0); \
334: } else { \
335: /* avoid warning */ \
336: (x) = 0; \
337: __ret = -TARGET_EFAULT; \
338: } \
339: __ret; \
1.1 root 340: })
341:
1.1.1.5 root 342: #define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong)
343: #define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long)
344: #define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t)
345: #define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t)
346: #define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t)
347: #define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t)
348: #define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t)
349: #define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t)
350: #define put_user_u8(x, gaddr) put_user((x), (gaddr), uint8_t)
351: #define put_user_s8(x, gaddr) put_user((x), (gaddr), int8_t)
352:
353: #define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong)
354: #define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long)
355: #define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t)
356: #define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t)
357: #define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t)
358: #define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t)
359: #define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t)
360: #define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t)
361: #define get_user_u8(x, gaddr) get_user((x), (gaddr), uint8_t)
362: #define get_user_s8(x, gaddr) get_user((x), (gaddr), int8_t)
363:
364: /* copy_from_user() and copy_to_user() are usually used to copy data
365: * buffers between the target and host. These internally perform
366: * locking/unlocking of the memory.
367: */
368: abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len);
369: abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len);
370:
1.1.1.2 root 371: /* Functions for accessing guest memory. The tget and tput functions
372: read/write single values, byteswapping as neccessary. The lock_user
373: gets a pointer to a contiguous area of guest memory, but does not perform
374: and byteswapping. lock_user may return either a pointer to the guest
375: memory, or a temporary buffer. */
376:
377: /* Lock an area of guest memory into the host. If copy is true then the
378: host area will have the same contents as the guest. */
1.1.1.5 root 379: static inline void *lock_user(int type, abi_ulong guest_addr, long len, int copy)
1.1.1.2 root 380: {
1.1.1.5 root 381: if (!access_ok(type, guest_addr, len))
382: return NULL;
1.1.1.2 root 383: #ifdef DEBUG_REMAP
1.1.1.5 root 384: {
385: void *addr;
386: addr = malloc(len);
387: if (copy)
388: memcpy(addr, g2h(guest_addr), len);
389: else
390: memset(addr, 0, len);
391: return addr;
392: }
1.1.1.2 root 393: #else
394: return g2h(guest_addr);
395: #endif
1.1 root 396: }
397:
1.1.1.5 root 398: /* Unlock an area of guest memory. The first LEN bytes must be
1.1.1.6 root 399: flushed back to guest memory. host_ptr = NULL is explicitly
1.1.1.5 root 400: allowed and does nothing. */
401: static inline void unlock_user(void *host_ptr, abi_ulong guest_addr,
402: long len)
1.1.1.2 root 403: {
1.1.1.5 root 404:
1.1.1.2 root 405: #ifdef DEBUG_REMAP
1.1.1.5 root 406: if (!host_ptr)
407: return;
408: if (host_ptr == g2h(guest_addr))
1.1.1.2 root 409: return;
410: if (len > 0)
1.1.1.5 root 411: memcpy(g2h(guest_addr), host_ptr, len);
412: free(host_ptr);
1.1.1.2 root 413: #endif
1.1 root 414: }
415:
1.1.1.5 root 416: /* Return the length of a string in target memory or -TARGET_EFAULT if
417: access error. */
418: abi_long target_strlen(abi_ulong gaddr);
1.1 root 419:
1.1.1.2 root 420: /* Like lock_user but for null terminated strings. */
1.1.1.5 root 421: static inline void *lock_user_string(abi_ulong guest_addr)
1.1.1.2 root 422: {
1.1.1.5 root 423: abi_long len;
424: len = target_strlen(guest_addr);
425: if (len < 0)
426: return NULL;
427: return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1);
1.1.1.2 root 428: }
429:
430: /* Helper macros for locking/ulocking a target struct. */
1.1.1.5 root 431: #define lock_user_struct(type, host_ptr, guest_addr, copy) \
432: (host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy))
433: #define unlock_user_struct(host_ptr, guest_addr, copy) \
1.1.1.2 root 434: unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0)
435:
1.1.1.8 root 436: #if defined(CONFIG_USE_NPTL)
1.1.1.6 root 437: #include <pthread.h>
438: #endif
439:
1.1 root 440: #endif /* QEMU_H */
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