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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"
8:
9: #undef DEBUG_REMAP
10: #ifdef DEBUG_REMAP
11: #include <stdlib.h>
12: #endif /* DEBUG_REMAP */
13:
14: #include "qemu-types.h"
15:
16: enum BSDType {
17: target_freebsd,
18: target_netbsd,
19: target_openbsd,
20: };
1.1.1.3 root 21: extern enum BSDType bsd_type;
1.1 root 22:
23: #include "syscall_defs.h"
24: #include "syscall.h"
25: #include "target_signal.h"
26: #include "gdbstub.h"
27:
1.1.1.3 root 28: #if defined(CONFIG_USE_NPTL)
1.1 root 29: #define THREAD __thread
30: #else
31: #define THREAD
32: #endif
33:
34: /* This struct is used to hold certain information about the image.
35: * Basically, it replicates in user space what would be certain
36: * task_struct fields in the kernel
37: */
38: struct image_info {
39: abi_ulong load_addr;
40: abi_ulong start_code;
41: abi_ulong end_code;
42: abi_ulong start_data;
43: abi_ulong end_data;
44: abi_ulong start_brk;
45: abi_ulong brk;
46: abi_ulong start_mmap;
47: abi_ulong mmap;
48: abi_ulong rss;
49: abi_ulong start_stack;
50: abi_ulong entry;
51: abi_ulong code_offset;
52: abi_ulong data_offset;
53: int personality;
54: };
55:
56: #define MAX_SIGQUEUE_SIZE 1024
57:
58: struct sigqueue {
59: struct sigqueue *next;
60: //target_siginfo_t info;
61: };
62:
63: struct emulated_sigtable {
64: int pending; /* true if signal is pending */
65: struct sigqueue *first;
66: struct sigqueue info; /* in order to always have memory for the
67: first signal, we put it here */
68: };
69:
70: /* NOTE: we force a big alignment so that the stack stored after is
71: aligned too */
72: typedef struct TaskState {
73: struct TaskState *next;
74: int used; /* non zero if used */
75: struct image_info *info;
76:
77: struct emulated_sigtable sigtab[TARGET_NSIG];
78: struct sigqueue sigqueue_table[MAX_SIGQUEUE_SIZE]; /* siginfo queue */
79: struct sigqueue *first_free; /* first free siginfo queue entry */
80: int signal_pending; /* non zero if a signal may be pending */
81:
82: uint8_t stack[0];
83: } __attribute__((aligned(16))) TaskState;
84:
85: void init_task_state(TaskState *ts);
86: extern const char *qemu_uname_release;
1.1.1.3 root 87: #if defined(CONFIG_USE_GUEST_BASE)
88: extern unsigned long mmap_min_addr;
89: #endif
1.1 root 90:
91: /* ??? See if we can avoid exposing so much of the loader internals. */
92: /*
93: * MAX_ARG_PAGES defines the number of pages allocated for arguments
94: * and envelope for the new program. 32 should suffice, this gives
95: * a maximum env+arg of 128kB w/4KB pages!
96: */
97: #define MAX_ARG_PAGES 32
98:
99: /*
100: * This structure is used to hold the arguments that are
101: * used when loading binaries.
102: */
103: struct linux_binprm {
104: char buf[128];
105: void *page[MAX_ARG_PAGES];
106: abi_ulong p;
107: int fd;
108: int e_uid, e_gid;
109: int argc, envc;
110: char **argv;
111: char **envp;
112: char * filename; /* Name of binary */
113: };
114:
115: void do_init_thread(struct target_pt_regs *regs, struct image_info *infop);
116: abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp,
117: abi_ulong stringp, int push_ptr);
118: int loader_exec(const char * filename, char ** argv, char ** envp,
119: struct target_pt_regs * regs, struct image_info *infop);
120:
121: int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
122: struct image_info * info);
123: int load_flt_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
124: struct image_info * info);
125:
126: abi_long memcpy_to_target(abi_ulong dest, const void *src,
127: unsigned long len);
128: void target_set_brk(abi_ulong new_brk);
129: abi_long do_brk(abi_ulong new_brk);
130: void syscall_init(void);
131: abi_long do_freebsd_syscall(void *cpu_env, int num, abi_long arg1,
132: abi_long arg2, abi_long arg3, abi_long arg4,
1.1.1.3 root 133: abi_long arg5, abi_long arg6, abi_long arg7,
134: abi_long arg8);
1.1 root 135: abi_long do_netbsd_syscall(void *cpu_env, int num, abi_long arg1,
136: abi_long arg2, abi_long arg3, abi_long arg4,
137: abi_long arg5, abi_long arg6);
138: abi_long do_openbsd_syscall(void *cpu_env, int num, abi_long arg1,
139: abi_long arg2, abi_long arg3, abi_long arg4,
140: abi_long arg5, abi_long arg6);
1.1.1.4 root 141: void gemu_log(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
1.1.1.6 ! root 142: extern THREAD CPUArchState *thread_env;
! 143: void cpu_loop(CPUArchState *env);
1.1 root 144: char *target_strerror(int err);
145: int get_osversion(void);
146: void fork_start(void);
147: void fork_end(int child);
148:
149: #include "qemu-log.h"
150:
151: /* strace.c */
152: void
153: print_freebsd_syscall(int num,
154: abi_long arg1, abi_long arg2, abi_long arg3,
155: abi_long arg4, abi_long arg5, abi_long arg6);
156: void print_freebsd_syscall_ret(int num, abi_long ret);
157: void
158: print_netbsd_syscall(int num,
159: abi_long arg1, abi_long arg2, abi_long arg3,
160: abi_long arg4, abi_long arg5, abi_long arg6);
161: void print_netbsd_syscall_ret(int num, abi_long ret);
162: void
163: print_openbsd_syscall(int num,
164: abi_long arg1, abi_long arg2, abi_long arg3,
165: abi_long arg4, abi_long arg5, abi_long arg6);
166: void print_openbsd_syscall_ret(int num, abi_long ret);
167: extern int do_strace;
168:
169: /* signal.c */
1.1.1.6 ! root 170: void process_pending_signals(CPUArchState *cpu_env);
1.1 root 171: void signal_init(void);
1.1.1.6 ! root 172: //int queue_signal(CPUArchState *env, int sig, target_siginfo_t *info);
1.1 root 173: //void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info);
174: //void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo);
1.1.1.6 ! root 175: long do_sigreturn(CPUArchState *env);
! 176: long do_rt_sigreturn(CPUArchState *env);
1.1 root 177: abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp);
178:
179: /* mmap.c */
180: int target_mprotect(abi_ulong start, abi_ulong len, int prot);
181: abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
182: int flags, int fd, abi_ulong offset);
183: int target_munmap(abi_ulong start, abi_ulong len);
184: abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size,
185: abi_ulong new_size, unsigned long flags,
186: abi_ulong new_addr);
187: int target_msync(abi_ulong start, abi_ulong len, int flags);
188: extern unsigned long last_brk;
189: void mmap_lock(void);
190: void mmap_unlock(void);
1.1.1.2 root 191: void cpu_list_lock(void);
192: void cpu_list_unlock(void);
1.1.1.3 root 193: #if defined(CONFIG_USE_NPTL)
1.1 root 194: void mmap_fork_start(void);
195: void mmap_fork_end(int child);
196: #endif
197:
1.1.1.2 root 198: /* main.c */
199: extern unsigned long x86_stack_size;
200:
1.1 root 201: /* user access */
202:
203: #define VERIFY_READ 0
204: #define VERIFY_WRITE 1 /* implies read access */
205:
206: static inline int access_ok(int type, abi_ulong addr, abi_ulong size)
207: {
208: return page_check_range((target_ulong)addr, size,
209: (type == VERIFY_READ) ? PAGE_READ : (PAGE_READ | PAGE_WRITE)) == 0;
210: }
211:
212: /* NOTE __get_user and __put_user use host pointers and don't check access. */
213: /* These are usually used to access struct data members once the
214: * struct has been locked - usually with lock_user_struct().
215: */
216: #define __put_user(x, hptr)\
217: ({\
218: int size = sizeof(*hptr);\
219: switch(size) {\
220: case 1:\
221: *(uint8_t *)(hptr) = (uint8_t)(typeof(*hptr))(x);\
222: break;\
223: case 2:\
224: *(uint16_t *)(hptr) = tswap16((typeof(*hptr))(x));\
225: break;\
226: case 4:\
227: *(uint32_t *)(hptr) = tswap32((typeof(*hptr))(x));\
228: break;\
229: case 8:\
230: *(uint64_t *)(hptr) = tswap64((typeof(*hptr))(x));\
231: break;\
232: default:\
233: abort();\
234: }\
235: 0;\
236: })
237:
238: #define __get_user(x, hptr) \
239: ({\
240: int size = sizeof(*hptr);\
241: switch(size) {\
242: case 1:\
243: x = (typeof(*hptr))*(uint8_t *)(hptr);\
244: break;\
245: case 2:\
246: x = (typeof(*hptr))tswap16(*(uint16_t *)(hptr));\
247: break;\
248: case 4:\
249: x = (typeof(*hptr))tswap32(*(uint32_t *)(hptr));\
250: break;\
251: case 8:\
252: x = (typeof(*hptr))tswap64(*(uint64_t *)(hptr));\
253: break;\
254: default:\
255: /* avoid warning */\
256: x = 0;\
257: abort();\
258: }\
259: 0;\
260: })
261:
262: /* put_user()/get_user() take a guest address and check access */
263: /* These are usually used to access an atomic data type, such as an int,
264: * that has been passed by address. These internally perform locking
265: * and unlocking on the data type.
266: */
267: #define put_user(x, gaddr, target_type) \
268: ({ \
269: abi_ulong __gaddr = (gaddr); \
270: target_type *__hptr; \
271: abi_long __ret; \
272: if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \
273: __ret = __put_user((x), __hptr); \
274: unlock_user(__hptr, __gaddr, sizeof(target_type)); \
275: } else \
276: __ret = -TARGET_EFAULT; \
277: __ret; \
278: })
279:
280: #define get_user(x, gaddr, target_type) \
281: ({ \
282: abi_ulong __gaddr = (gaddr); \
283: target_type *__hptr; \
284: abi_long __ret; \
285: if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \
286: __ret = __get_user((x), __hptr); \
287: unlock_user(__hptr, __gaddr, 0); \
288: } else { \
289: /* avoid warning */ \
290: (x) = 0; \
291: __ret = -TARGET_EFAULT; \
292: } \
293: __ret; \
294: })
295:
296: #define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong)
297: #define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long)
298: #define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t)
299: #define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t)
300: #define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t)
301: #define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t)
302: #define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t)
303: #define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t)
304: #define put_user_u8(x, gaddr) put_user((x), (gaddr), uint8_t)
305: #define put_user_s8(x, gaddr) put_user((x), (gaddr), int8_t)
306:
307: #define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong)
308: #define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long)
309: #define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t)
310: #define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t)
311: #define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t)
312: #define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t)
313: #define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t)
314: #define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t)
315: #define get_user_u8(x, gaddr) get_user((x), (gaddr), uint8_t)
316: #define get_user_s8(x, gaddr) get_user((x), (gaddr), int8_t)
317:
318: /* copy_from_user() and copy_to_user() are usually used to copy data
319: * buffers between the target and host. These internally perform
320: * locking/unlocking of the memory.
321: */
322: abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len);
323: abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len);
324:
325: /* Functions for accessing guest memory. The tget and tput functions
1.1.1.5 root 326: read/write single values, byteswapping as necessary. The lock_user
1.1 root 327: gets a pointer to a contiguous area of guest memory, but does not perform
328: and byteswapping. lock_user may return either a pointer to the guest
329: memory, or a temporary buffer. */
330:
331: /* Lock an area of guest memory into the host. If copy is true then the
332: host area will have the same contents as the guest. */
333: static inline void *lock_user(int type, abi_ulong guest_addr, long len, int copy)
334: {
335: if (!access_ok(type, guest_addr, len))
336: return NULL;
337: #ifdef DEBUG_REMAP
338: {
339: void *addr;
340: addr = malloc(len);
341: if (copy)
342: memcpy(addr, g2h(guest_addr), len);
343: else
344: memset(addr, 0, len);
345: return addr;
346: }
347: #else
348: return g2h(guest_addr);
349: #endif
350: }
351:
352: /* Unlock an area of guest memory. The first LEN bytes must be
353: flushed back to guest memory. host_ptr = NULL is explicitly
354: allowed and does nothing. */
355: static inline void unlock_user(void *host_ptr, abi_ulong guest_addr,
356: long len)
357: {
358:
359: #ifdef DEBUG_REMAP
360: if (!host_ptr)
361: return;
362: if (host_ptr == g2h(guest_addr))
363: return;
364: if (len > 0)
365: memcpy(g2h(guest_addr), host_ptr, len);
366: free(host_ptr);
367: #endif
368: }
369:
370: /* Return the length of a string in target memory or -TARGET_EFAULT if
371: access error. */
372: abi_long target_strlen(abi_ulong gaddr);
373:
374: /* Like lock_user but for null terminated strings. */
375: static inline void *lock_user_string(abi_ulong guest_addr)
376: {
377: abi_long len;
378: len = target_strlen(guest_addr);
379: if (len < 0)
380: return NULL;
381: return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1);
382: }
383:
384: /* Helper macros for locking/ulocking a target struct. */
385: #define lock_user_struct(type, host_ptr, guest_addr, copy) \
386: (host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy))
387: #define unlock_user_struct(host_ptr, guest_addr, copy) \
388: unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0)
389:
1.1.1.3 root 390: #if defined(CONFIG_USE_NPTL)
1.1 root 391: #include <pthread.h>
392: #endif
393:
394: #endif /* QEMU_H */
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