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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;
1.1.1.13! root 51: abi_ulong auxv_len;
1.1.1.7 root 52: abi_ulong arg_start;
53: abi_ulong arg_end;
1.1.1.13! root 54: uint32_t elf_flags;
1.1 root 55: int personality;
1.1.1.11 root 56: #ifdef CONFIG_USE_FDPIC
57: abi_ulong loadmap_addr;
58: uint16_t nsegs;
59: void *loadsegs;
60: abi_ulong pt_dynamic_addr;
61: struct image_info *other_info;
62: #endif
1.1 root 63: };
64:
65: #ifdef TARGET_I386
66: /* Information about the current linux thread */
67: struct vm86_saved_state {
68: uint32_t eax; /* return code */
69: uint32_t ebx;
70: uint32_t ecx;
71: uint32_t edx;
72: uint32_t esi;
73: uint32_t edi;
74: uint32_t ebp;
75: uint32_t esp;
76: uint32_t eflags;
77: uint32_t eip;
78: uint16_t cs, ss, ds, es, fs, gs;
79: };
80: #endif
81:
82: #ifdef TARGET_ARM
83: /* FPU emulator */
84: #include "nwfpe/fpa11.h"
85: #endif
86:
1.1.1.6 root 87: #define MAX_SIGQUEUE_SIZE 1024
88:
89: struct sigqueue {
90: struct sigqueue *next;
91: target_siginfo_t info;
92: };
93:
94: struct emulated_sigtable {
95: int pending; /* true if signal is pending */
96: struct sigqueue *first;
97: struct sigqueue info; /* in order to always have memory for the
98: first signal, we put it here */
99: };
100:
1.1 root 101: /* NOTE: we force a big alignment so that the stack stored after is
102: aligned too */
103: typedef struct TaskState {
1.1.1.7 root 104: pid_t ts_tid; /* tid (or pid) of this task */
1.1 root 105: #ifdef TARGET_ARM
106: /* FPA state */
107: FPA11 fpa;
108: int swi_errno;
109: #endif
1.1.1.11 root 110: #ifdef TARGET_UNICORE32
111: int swi_errno;
112: #endif
1.1.1.5 root 113: #if defined(TARGET_I386) && !defined(TARGET_X86_64)
114: abi_ulong target_v86;
1.1 root 115: struct vm86_saved_state vm86_saved_regs;
116: struct target_vm86plus_struct vm86plus;
117: uint32_t v86flags;
118: uint32_t v86mask;
119: #endif
1.1.1.8 root 120: #ifdef CONFIG_USE_NPTL
1.1.1.7 root 121: abi_ulong child_tidptr;
122: #endif
1.1.1.4 root 123: #ifdef TARGET_M68K
124: int sim_syscalls;
125: #endif
1.1.1.11 root 126: #if defined(TARGET_ARM) || defined(TARGET_M68K) || defined(TARGET_UNICORE32)
1.1.1.5 root 127: /* Extra fields for semihosted binaries. */
128: uint32_t heap_base;
129: uint32_t heap_limit;
130: #endif
1.1.1.13! root 131: uint32_t stack_base;
1.1 root 132: int used; /* non zero if used */
1.1.1.3 root 133: struct image_info *info;
1.1.1.7 root 134: struct linux_binprm *bprm;
1.1.1.6 root 135:
136: struct emulated_sigtable sigtab[TARGET_NSIG];
137: struct sigqueue sigqueue_table[MAX_SIGQUEUE_SIZE]; /* siginfo queue */
138: struct sigqueue *first_free; /* first free siginfo queue entry */
139: int signal_pending; /* non zero if a signal may be pending */
1.1 root 140: } __attribute__((aligned(16))) TaskState;
141:
1.1.1.6 root 142: extern char *exec_path;
143: void init_task_state(TaskState *ts);
1.1.1.7 root 144: void task_settid(TaskState *);
145: void stop_all_tasks(void);
1.1.1.3 root 146: extern const char *qemu_uname_release;
1.1.1.8 root 147: extern unsigned long mmap_min_addr;
1.1 root 148:
1.1.1.3 root 149: /* ??? See if we can avoid exposing so much of the loader internals. */
150: /*
151: * MAX_ARG_PAGES defines the number of pages allocated for arguments
152: * and envelope for the new program. 32 should suffice, this gives
153: * a maximum env+arg of 128kB w/4KB pages!
154: */
1.1.1.7 root 155: #define MAX_ARG_PAGES 33
1.1.1.3 root 156:
1.1.1.10 root 157: /* Read a good amount of data initially, to hopefully get all the
158: program headers loaded. */
159: #define BPRM_BUF_SIZE 1024
160:
1.1.1.3 root 161: /*
1.1.1.5 root 162: * This structure is used to hold the arguments that are
1.1.1.3 root 163: * used when loading binaries.
164: */
165: struct linux_binprm {
1.1.1.10 root 166: char buf[BPRM_BUF_SIZE] __attribute__((aligned));
1.1.1.3 root 167: void *page[MAX_ARG_PAGES];
1.1.1.5 root 168: abi_ulong p;
1.1.1.3 root 169: int fd;
170: int e_uid, e_gid;
171: int argc, envc;
172: char **argv;
173: char **envp;
174: char * filename; /* Name of binary */
1.1.1.13! root 175: int (*core_dump)(int, const CPUArchState *); /* coredump routine */
1.1.1.3 root 176: };
177:
178: void do_init_thread(struct target_pt_regs *regs, struct image_info *infop);
1.1.1.5 root 179: abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp,
180: abi_ulong stringp, int push_ptr);
181: int loader_exec(const char * filename, char ** argv, char ** envp,
1.1.1.7 root 182: struct target_pt_regs * regs, struct image_info *infop,
183: struct linux_binprm *);
1.1 root 184:
1.1.1.3 root 185: int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
186: struct image_info * info);
187: int load_flt_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
188: struct image_info * info);
189:
1.1.1.5 root 190: abi_long memcpy_to_target(abi_ulong dest, const void *src,
191: unsigned long len);
192: void target_set_brk(abi_ulong new_brk);
193: abi_long do_brk(abi_ulong new_brk);
1.1 root 194: void syscall_init(void);
1.1.1.5 root 195: abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
196: abi_long arg2, abi_long arg3, abi_long arg4,
1.1.1.11 root 197: abi_long arg5, abi_long arg6, abi_long arg7,
198: abi_long arg8);
1.1.1.10 root 199: void gemu_log(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
1.1.1.13! root 200: extern THREAD CPUArchState *thread_env;
! 201: void cpu_loop(CPUArchState *env);
1.1.1.5 root 202: char *target_strerror(int err);
1.1.1.6 root 203: int get_osversion(void);
204: void fork_start(void);
205: void fork_end(int child);
1.1 root 206:
1.1.1.12 root 207: /* Return true if the proposed guest_base is suitable for the guest.
208: * The guest code may leave a page mapped and populate it if the
209: * address is suitable.
210: */
211: bool guest_validate_base(unsigned long guest_base);
212:
1.1.1.6 root 213: #include "qemu-log.h"
1.1 root 214:
1.1.1.5 root 215: /* strace.c */
216: void print_syscall(int num,
217: abi_long arg1, abi_long arg2, abi_long arg3,
218: abi_long arg4, abi_long arg5, abi_long arg6);
219: void print_syscall_ret(int num, abi_long arg1);
220: extern int do_strace;
221:
1.1 root 222: /* signal.c */
1.1.1.13! root 223: void process_pending_signals(CPUArchState *cpu_env);
1.1 root 224: void signal_init(void);
1.1.1.13! root 225: int queue_signal(CPUArchState *env, int sig, target_siginfo_t *info);
1.1 root 226: void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info);
227: void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo);
1.1.1.6 root 228: int target_to_host_signal(int sig);
1.1.1.7 root 229: int host_to_target_signal(int sig);
1.1.1.13! root 230: long do_sigreturn(CPUArchState *env);
! 231: long do_rt_sigreturn(CPUArchState *env);
1.1.1.5 root 232: abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp);
1.1 root 233:
234: #ifdef TARGET_I386
235: /* vm86.c */
236: void save_v86_state(CPUX86State *env);
237: void handle_vm86_trap(CPUX86State *env, int trapno);
238: void handle_vm86_fault(CPUX86State *env);
1.1.1.5 root 239: int do_vm86(CPUX86State *env, long subfunction, abi_ulong v86_addr);
240: #elif defined(TARGET_SPARC64)
241: void sparc64_set_context(CPUSPARCState *env);
242: void sparc64_get_context(CPUSPARCState *env);
1.1 root 243: #endif
244:
245: /* mmap.c */
1.1.1.5 root 246: int target_mprotect(abi_ulong start, abi_ulong len, int prot);
247: abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
248: int flags, int fd, abi_ulong offset);
249: int target_munmap(abi_ulong start, abi_ulong len);
250: abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size,
251: abi_ulong new_size, unsigned long flags,
252: abi_ulong new_addr);
253: int target_msync(abi_ulong start, abi_ulong len, int flags);
1.1.1.6 root 254: extern unsigned long last_brk;
1.1.1.13! root 255: extern abi_ulong mmap_next_start;
1.1.1.6 root 256: void mmap_lock(void);
257: void mmap_unlock(void);
1.1.1.7 root 258: abi_ulong mmap_find_vma(abi_ulong, abi_ulong);
259: void cpu_list_lock(void);
260: void cpu_list_unlock(void);
1.1.1.8 root 261: #if defined(CONFIG_USE_NPTL)
1.1.1.6 root 262: void mmap_fork_start(void);
263: void mmap_fork_end(int child);
264: #endif
265:
266: /* main.c */
1.1.1.9 root 267: extern unsigned long guest_stack_size;
1.1 root 268:
269: /* user access */
270:
271: #define VERIFY_READ 0
1.1.1.5 root 272: #define VERIFY_WRITE 1 /* implies read access */
1.1 root 273:
1.1.1.5 root 274: static inline int access_ok(int type, abi_ulong addr, abi_ulong size)
275: {
276: return page_check_range((target_ulong)addr, size,
277: (type == VERIFY_READ) ? PAGE_READ : (PAGE_READ | PAGE_WRITE)) == 0;
278: }
1.1 root 279:
1.1.1.5 root 280: /* NOTE __get_user and __put_user use host pointers and don't check access. */
281: /* These are usually used to access struct data members once the
282: * struct has been locked - usually with lock_user_struct().
283: */
284: #define __put_user(x, hptr)\
1.1 root 285: ({\
1.1.1.10 root 286: switch(sizeof(*hptr)) {\
1.1 root 287: case 1:\
1.1.1.5 root 288: *(uint8_t *)(hptr) = (uint8_t)(typeof(*hptr))(x);\
1.1 root 289: break;\
290: case 2:\
1.1.1.7 root 291: *(uint16_t *)(hptr) = tswap16((uint16_t)(typeof(*hptr))(x));\
1.1 root 292: break;\
293: case 4:\
1.1.1.7 root 294: *(uint32_t *)(hptr) = tswap32((uint32_t)(typeof(*hptr))(x));\
1.1 root 295: break;\
296: case 8:\
1.1.1.5 root 297: *(uint64_t *)(hptr) = tswap64((typeof(*hptr))(x));\
1.1 root 298: break;\
299: default:\
300: abort();\
301: }\
302: 0;\
303: })
304:
1.1.1.5 root 305: #define __get_user(x, hptr) \
1.1 root 306: ({\
1.1.1.10 root 307: switch(sizeof(*hptr)) {\
1.1 root 308: case 1:\
1.1.1.5 root 309: x = (typeof(*hptr))*(uint8_t *)(hptr);\
1.1 root 310: break;\
311: case 2:\
1.1.1.5 root 312: x = (typeof(*hptr))tswap16(*(uint16_t *)(hptr));\
1.1 root 313: break;\
314: case 4:\
1.1.1.5 root 315: x = (typeof(*hptr))tswap32(*(uint32_t *)(hptr));\
1.1 root 316: break;\
317: case 8:\
1.1.1.5 root 318: x = (typeof(*hptr))tswap64(*(uint64_t *)(hptr));\
1.1 root 319: break;\
320: default:\
1.1.1.5 root 321: /* avoid warning */\
322: x = 0;\
1.1 root 323: abort();\
324: }\
325: 0;\
326: })
327:
1.1.1.5 root 328: /* put_user()/get_user() take a guest address and check access */
329: /* These are usually used to access an atomic data type, such as an int,
330: * that has been passed by address. These internally perform locking
331: * and unlocking on the data type.
332: */
333: #define put_user(x, gaddr, target_type) \
334: ({ \
335: abi_ulong __gaddr = (gaddr); \
336: target_type *__hptr; \
337: abi_long __ret; \
338: if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \
339: __ret = __put_user((x), __hptr); \
340: unlock_user(__hptr, __gaddr, sizeof(target_type)); \
341: } else \
342: __ret = -TARGET_EFAULT; \
343: __ret; \
1.1 root 344: })
345:
1.1.1.5 root 346: #define get_user(x, gaddr, target_type) \
347: ({ \
348: abi_ulong __gaddr = (gaddr); \
349: target_type *__hptr; \
350: abi_long __ret; \
351: if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \
352: __ret = __get_user((x), __hptr); \
353: unlock_user(__hptr, __gaddr, 0); \
354: } else { \
355: /* avoid warning */ \
356: (x) = 0; \
357: __ret = -TARGET_EFAULT; \
358: } \
359: __ret; \
1.1 root 360: })
361:
1.1.1.5 root 362: #define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong)
363: #define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long)
364: #define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t)
365: #define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t)
366: #define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t)
367: #define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t)
368: #define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t)
369: #define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t)
370: #define put_user_u8(x, gaddr) put_user((x), (gaddr), uint8_t)
371: #define put_user_s8(x, gaddr) put_user((x), (gaddr), int8_t)
372:
373: #define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong)
374: #define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long)
375: #define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t)
376: #define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t)
377: #define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t)
378: #define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t)
379: #define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t)
380: #define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t)
381: #define get_user_u8(x, gaddr) get_user((x), (gaddr), uint8_t)
382: #define get_user_s8(x, gaddr) get_user((x), (gaddr), int8_t)
383:
384: /* copy_from_user() and copy_to_user() are usually used to copy data
385: * buffers between the target and host. These internally perform
386: * locking/unlocking of the memory.
387: */
388: abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len);
389: abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len);
390:
1.1.1.2 root 391: /* Functions for accessing guest memory. The tget and tput functions
1.1.1.11 root 392: read/write single values, byteswapping as necessary. The lock_user
1.1.1.2 root 393: gets a pointer to a contiguous area of guest memory, but does not perform
394: and byteswapping. lock_user may return either a pointer to the guest
395: memory, or a temporary buffer. */
396:
397: /* Lock an area of guest memory into the host. If copy is true then the
398: host area will have the same contents as the guest. */
1.1.1.5 root 399: static inline void *lock_user(int type, abi_ulong guest_addr, long len, int copy)
1.1.1.2 root 400: {
1.1.1.5 root 401: if (!access_ok(type, guest_addr, len))
402: return NULL;
1.1.1.2 root 403: #ifdef DEBUG_REMAP
1.1.1.5 root 404: {
405: void *addr;
406: addr = malloc(len);
407: if (copy)
408: memcpy(addr, g2h(guest_addr), len);
409: else
410: memset(addr, 0, len);
411: return addr;
412: }
1.1.1.2 root 413: #else
414: return g2h(guest_addr);
415: #endif
1.1 root 416: }
417:
1.1.1.5 root 418: /* Unlock an area of guest memory. The first LEN bytes must be
1.1.1.6 root 419: flushed back to guest memory. host_ptr = NULL is explicitly
1.1.1.5 root 420: allowed and does nothing. */
421: static inline void unlock_user(void *host_ptr, abi_ulong guest_addr,
422: long len)
1.1.1.2 root 423: {
1.1.1.5 root 424:
1.1.1.2 root 425: #ifdef DEBUG_REMAP
1.1.1.5 root 426: if (!host_ptr)
427: return;
428: if (host_ptr == g2h(guest_addr))
1.1.1.2 root 429: return;
430: if (len > 0)
1.1.1.5 root 431: memcpy(g2h(guest_addr), host_ptr, len);
432: free(host_ptr);
1.1.1.2 root 433: #endif
1.1 root 434: }
435:
1.1.1.5 root 436: /* Return the length of a string in target memory or -TARGET_EFAULT if
437: access error. */
438: abi_long target_strlen(abi_ulong gaddr);
1.1 root 439:
1.1.1.2 root 440: /* Like lock_user but for null terminated strings. */
1.1.1.5 root 441: static inline void *lock_user_string(abi_ulong guest_addr)
1.1.1.2 root 442: {
1.1.1.5 root 443: abi_long len;
444: len = target_strlen(guest_addr);
445: if (len < 0)
446: return NULL;
447: return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1);
1.1.1.2 root 448: }
449:
450: /* Helper macros for locking/ulocking a target struct. */
1.1.1.5 root 451: #define lock_user_struct(type, host_ptr, guest_addr, copy) \
452: (host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy))
453: #define unlock_user_struct(host_ptr, guest_addr, copy) \
1.1.1.2 root 454: unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0)
455:
1.1.1.8 root 456: #if defined(CONFIG_USE_NPTL)
1.1.1.6 root 457: #include <pthread.h>
458: #endif
459:
1.1 root 460: #endif /* QEMU_H */
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