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e88de099 FB |
1 | #ifndef QEMU_H |
2 | #define QEMU_H | |
31e31b8a FB |
3 | |
4 | #include "thunk.h" | |
5 | ||
9de5e440 | 6 | #include <signal.h> |
edf779ff | 7 | #include <string.h> |
9de5e440 | 8 | #include "syscall_defs.h" |
31e31b8a | 9 | |
6180a181 FB |
10 | #include "cpu.h" |
11 | #include "syscall.h" | |
1fddef4b | 12 | #include "gdbstub.h" |
66fb9763 | 13 | |
31e31b8a FB |
14 | /* This struct is used to hold certain information about the image. |
15 | * Basically, it replicates in user space what would be certain | |
16 | * task_struct fields in the kernel | |
17 | */ | |
18 | struct image_info { | |
19 | unsigned long start_code; | |
20 | unsigned long end_code; | |
e5fe0c52 | 21 | unsigned long start_data; |
31e31b8a FB |
22 | unsigned long end_data; |
23 | unsigned long start_brk; | |
24 | unsigned long brk; | |
25 | unsigned long start_mmap; | |
26 | unsigned long mmap; | |
27 | unsigned long rss; | |
28 | unsigned long start_stack; | |
31e31b8a | 29 | unsigned long entry; |
978efd6a PB |
30 | target_ulong code_offset; |
31 | target_ulong data_offset; | |
31e31b8a FB |
32 | int personality; |
33 | }; | |
34 | ||
b346ff46 | 35 | #ifdef TARGET_I386 |
851e67a1 FB |
36 | /* Information about the current linux thread */ |
37 | struct vm86_saved_state { | |
38 | uint32_t eax; /* return code */ | |
39 | uint32_t ebx; | |
40 | uint32_t ecx; | |
41 | uint32_t edx; | |
42 | uint32_t esi; | |
43 | uint32_t edi; | |
44 | uint32_t ebp; | |
45 | uint32_t esp; | |
46 | uint32_t eflags; | |
47 | uint32_t eip; | |
48 | uint16_t cs, ss, ds, es, fs, gs; | |
49 | }; | |
b346ff46 | 50 | #endif |
851e67a1 | 51 | |
28c4f361 FB |
52 | #ifdef TARGET_ARM |
53 | /* FPU emulator */ | |
54 | #include "nwfpe/fpa11.h" | |
28c4f361 FB |
55 | #endif |
56 | ||
851e67a1 FB |
57 | /* NOTE: we force a big alignment so that the stack stored after is |
58 | aligned too */ | |
59 | typedef struct TaskState { | |
60 | struct TaskState *next; | |
28c4f361 FB |
61 | #ifdef TARGET_ARM |
62 | /* FPA state */ | |
63 | FPA11 fpa; | |
a4f81979 FB |
64 | /* Extra fields for semihosted binaries. */ |
65 | uint32_t stack_base; | |
66 | uint32_t heap_base; | |
67 | uint32_t heap_limit; | |
68 | int swi_errno; | |
28c4f361 | 69 | #endif |
b346ff46 | 70 | #ifdef TARGET_I386 |
53a5960a | 71 | target_ulong target_v86; |
851e67a1 | 72 | struct vm86_saved_state vm86_saved_regs; |
b333af06 | 73 | struct target_vm86plus_struct vm86plus; |
631271d7 FB |
74 | uint32_t v86flags; |
75 | uint32_t v86mask; | |
e6e5906b PB |
76 | #endif |
77 | #ifdef TARGET_M68K | |
78 | int sim_syscalls; | |
b346ff46 | 79 | #endif |
851e67a1 | 80 | int used; /* non zero if used */ |
978efd6a | 81 | struct image_info *info; |
851e67a1 FB |
82 | uint8_t stack[0]; |
83 | } __attribute__((aligned(16))) TaskState; | |
84 | ||
85 | extern TaskState *first_task_state; | |
c5937220 | 86 | extern const char *qemu_uname_release; |
851e67a1 | 87 | |
e5fe0c52 PB |
88 | /* ??? See if we can avoid exposing so much of the loader internals. */ |
89 | /* | |
90 | * MAX_ARG_PAGES defines the number of pages allocated for arguments | |
91 | * and envelope for the new program. 32 should suffice, this gives | |
92 | * a maximum env+arg of 128kB w/4KB pages! | |
93 | */ | |
94 | #define MAX_ARG_PAGES 32 | |
95 | ||
96 | /* | |
97 | * This structure is used to hold the arguments that are | |
98 | * used when loading binaries. | |
99 | */ | |
100 | struct linux_binprm { | |
101 | char buf[128]; | |
102 | void *page[MAX_ARG_PAGES]; | |
103 | unsigned long p; | |
104 | int fd; | |
105 | int e_uid, e_gid; | |
106 | int argc, envc; | |
107 | char **argv; | |
108 | char **envp; | |
109 | char * filename; /* Name of binary */ | |
110 | }; | |
111 | ||
112 | void do_init_thread(struct target_pt_regs *regs, struct image_info *infop); | |
113 | target_ulong loader_build_argptr(int envc, int argc, target_ulong sp, | |
114 | target_ulong stringp, int push_ptr); | |
115 | int loader_exec(const char * filename, char ** argv, char ** envp, | |
01ffc75b | 116 | struct target_pt_regs * regs, struct image_info *infop); |
31e31b8a | 117 | |
e5fe0c52 PB |
118 | int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs, |
119 | struct image_info * info); | |
120 | int load_flt_binary(struct linux_binprm * bprm, struct target_pt_regs * regs, | |
121 | struct image_info * info); | |
122 | ||
123 | void memcpy_to_target(target_ulong dest, const void *src, | |
124 | unsigned long len); | |
53a5960a PB |
125 | void target_set_brk(target_ulong new_brk); |
126 | long do_brk(target_ulong new_brk); | |
31e31b8a | 127 | void syscall_init(void); |
6dbad63e | 128 | long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3, |
31e31b8a FB |
129 | long arg4, long arg5, long arg6); |
130 | void gemu_log(const char *fmt, ...) __attribute__((format(printf,1,2))); | |
b346ff46 FB |
131 | extern CPUState *global_env; |
132 | void cpu_loop(CPUState *env); | |
32ce6337 FB |
133 | void init_paths(const char *prefix); |
134 | const char *path(const char *pathname); | |
6977fbfd FB |
135 | |
136 | extern int loglevel; | |
631271d7 FB |
137 | extern FILE *logfile; |
138 | ||
b346ff46 FB |
139 | /* signal.c */ |
140 | void process_pending_signals(void *cpu_env); | |
141 | void signal_init(void); | |
142 | int queue_signal(int sig, target_siginfo_t *info); | |
143 | void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info); | |
144 | void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo); | |
145 | long do_sigreturn(CPUState *env); | |
146 | long do_rt_sigreturn(CPUState *env); | |
147 | ||
148 | #ifdef TARGET_I386 | |
631271d7 FB |
149 | /* vm86.c */ |
150 | void save_v86_state(CPUX86State *env); | |
447db213 | 151 | void handle_vm86_trap(CPUX86State *env, int trapno); |
631271d7 | 152 | void handle_vm86_fault(CPUX86State *env); |
53a5960a | 153 | int do_vm86(CPUX86State *env, long subfunction, target_ulong v86_addr); |
b346ff46 | 154 | #endif |
631271d7 | 155 | |
54936004 | 156 | /* mmap.c */ |
53a5960a PB |
157 | int target_mprotect(target_ulong start, target_ulong len, int prot); |
158 | long target_mmap(target_ulong start, target_ulong len, int prot, | |
159 | int flags, int fd, target_ulong offset); | |
160 | int target_munmap(target_ulong start, target_ulong len); | |
161 | long target_mremap(target_ulong old_addr, target_ulong old_size, | |
162 | target_ulong new_size, unsigned long flags, | |
163 | target_ulong new_addr); | |
164 | int target_msync(target_ulong start, target_ulong len, int flags); | |
54936004 | 165 | |
edf779ff FB |
166 | /* user access */ |
167 | ||
168 | #define VERIFY_READ 0 | |
169 | #define VERIFY_WRITE 1 | |
170 | ||
171 | #define access_ok(type,addr,size) (1) | |
172 | ||
53a5960a | 173 | /* NOTE get_user and put_user use host addresses. */ |
edf779ff FB |
174 | #define __put_user(x,ptr)\ |
175 | ({\ | |
176 | int size = sizeof(*ptr);\ | |
177 | switch(size) {\ | |
178 | case 1:\ | |
53a5960a | 179 | *(uint8_t *)(ptr) = (typeof(*ptr))(x);\ |
edf779ff FB |
180 | break;\ |
181 | case 2:\ | |
53a5960a | 182 | *(uint16_t *)(ptr) = tswap16((typeof(*ptr))(x));\ |
edf779ff FB |
183 | break;\ |
184 | case 4:\ | |
53a5960a | 185 | *(uint32_t *)(ptr) = tswap32((typeof(*ptr))(x));\ |
edf779ff FB |
186 | break;\ |
187 | case 8:\ | |
53a5960a | 188 | *(uint64_t *)(ptr) = tswap64((typeof(*ptr))(x));\ |
edf779ff FB |
189 | break;\ |
190 | default:\ | |
191 | abort();\ | |
192 | }\ | |
193 | 0;\ | |
194 | }) | |
195 | ||
196 | #define __get_user(x, ptr) \ | |
197 | ({\ | |
198 | int size = sizeof(*ptr);\ | |
199 | switch(size) {\ | |
200 | case 1:\ | |
53a5960a | 201 | x = (typeof(*ptr))*(uint8_t *)(ptr);\ |
edf779ff FB |
202 | break;\ |
203 | case 2:\ | |
53a5960a | 204 | x = (typeof(*ptr))tswap16(*(uint16_t *)(ptr));\ |
edf779ff FB |
205 | break;\ |
206 | case 4:\ | |
53a5960a | 207 | x = (typeof(*ptr))tswap32(*(uint32_t *)(ptr));\ |
edf779ff FB |
208 | break;\ |
209 | case 8:\ | |
53a5960a | 210 | x = (typeof(*ptr))tswap64(*(uint64_t *)(ptr));\ |
edf779ff FB |
211 | break;\ |
212 | default:\ | |
213 | abort();\ | |
214 | }\ | |
215 | 0;\ | |
216 | }) | |
217 | ||
edf779ff FB |
218 | #define put_user(x,ptr)\ |
219 | ({\ | |
220 | int __ret;\ | |
221 | if (access_ok(VERIFY_WRITE, ptr, sizeof(*ptr)))\ | |
222 | __ret = __put_user(x, ptr);\ | |
223 | else\ | |
224 | __ret = -EFAULT;\ | |
225 | __ret;\ | |
226 | }) | |
227 | ||
228 | #define get_user(x,ptr)\ | |
229 | ({\ | |
230 | int __ret;\ | |
231 | if (access_ok(VERIFY_READ, ptr, sizeof(*ptr)))\ | |
232 | __ret = __get_user(x, ptr);\ | |
233 | else\ | |
234 | __ret = -EFAULT;\ | |
235 | __ret;\ | |
236 | }) | |
237 | ||
53a5960a PB |
238 | /* Functions for accessing guest memory. The tget and tput functions |
239 | read/write single values, byteswapping as neccessary. The lock_user | |
240 | gets a pointer to a contiguous area of guest memory, but does not perform | |
241 | and byteswapping. lock_user may return either a pointer to the guest | |
242 | memory, or a temporary buffer. */ | |
243 | ||
244 | /* Lock an area of guest memory into the host. If copy is true then the | |
245 | host area will have the same contents as the guest. */ | |
246 | static inline void *lock_user(target_ulong guest_addr, long len, int copy) | |
edf779ff | 247 | { |
53a5960a PB |
248 | #ifdef DEBUG_REMAP |
249 | void *addr; | |
250 | addr = malloc(len); | |
251 | if (copy) | |
252 | memcpy(addr, g2h(guest_addr), len); | |
edf779ff | 253 | else |
53a5960a PB |
254 | memset(addr, 0, len); |
255 | return addr; | |
256 | #else | |
257 | return g2h(guest_addr); | |
258 | #endif | |
edf779ff FB |
259 | } |
260 | ||
53a5960a PB |
261 | /* Unlock an area of guest memory. The first LEN bytes must be flushed back |
262 | to guest memory. */ | |
263 | static inline void unlock_user(void *host_addr, target_ulong guest_addr, | |
264 | long len) | |
edf779ff | 265 | { |
53a5960a PB |
266 | #ifdef DEBUG_REMAP |
267 | if (host_addr == g2h(guest_addr)) | |
268 | return; | |
269 | if (len > 0) | |
270 | memcpy(g2h(guest_addr), host_addr, len); | |
271 | free(host_addr); | |
272 | #endif | |
edf779ff FB |
273 | } |
274 | ||
53a5960a PB |
275 | /* Return the length of a string in target memory. */ |
276 | static inline int target_strlen(target_ulong ptr) | |
edf779ff | 277 | { |
53a5960a PB |
278 | return strlen(g2h(ptr)); |
279 | } | |
280 | ||
281 | /* Like lock_user but for null terminated strings. */ | |
282 | static inline void *lock_user_string(target_ulong guest_addr) | |
283 | { | |
284 | long len; | |
285 | len = target_strlen(guest_addr) + 1; | |
286 | return lock_user(guest_addr, len, 1); | |
edf779ff FB |
287 | } |
288 | ||
53a5960a PB |
289 | /* Helper macros for locking/ulocking a target struct. */ |
290 | #define lock_user_struct(host_ptr, guest_addr, copy) \ | |
291 | host_ptr = lock_user(guest_addr, sizeof(*host_ptr), copy) | |
292 | #define unlock_user_struct(host_ptr, guest_addr, copy) \ | |
293 | unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0) | |
294 | ||
295 | #define tget8(addr) ldub(addr) | |
296 | #define tput8(addr, val) stb(addr, val) | |
297 | #define tget16(addr) lduw(addr) | |
298 | #define tput16(addr, val) stw(addr, val) | |
299 | #define tget32(addr) ldl(addr) | |
300 | #define tput32(addr, val) stl(addr, val) | |
301 | #define tget64(addr) ldq(addr) | |
302 | #define tput64(addr, val) stq(addr, val) | |
303 | #if TARGET_LONG_BITS == 64 | |
304 | #define tgetl(addr) ldq(addr) | |
305 | #define tputl(addr, val) stq(addr, val) | |
306 | #else | |
307 | #define tgetl(addr) ldl(addr) | |
308 | #define tputl(addr, val) stl(addr, val) | |
309 | #endif | |
310 | ||
e88de099 | 311 | #endif /* QEMU_H */ |