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