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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; | |
b346ff46 | 76 | #endif |
851e67a1 | 77 | int used; /* non zero if used */ |
978efd6a | 78 | struct image_info *info; |
851e67a1 FB |
79 | uint8_t stack[0]; |
80 | } __attribute__((aligned(16))) TaskState; | |
81 | ||
82 | extern TaskState *first_task_state; | |
c5937220 | 83 | extern const char *qemu_uname_release; |
851e67a1 | 84 | |
e5fe0c52 PB |
85 | /* ??? See if we can avoid exposing so much of the loader internals. */ |
86 | /* | |
87 | * MAX_ARG_PAGES defines the number of pages allocated for arguments | |
88 | * and envelope for the new program. 32 should suffice, this gives | |
89 | * a maximum env+arg of 128kB w/4KB pages! | |
90 | */ | |
91 | #define MAX_ARG_PAGES 32 | |
92 | ||
93 | /* | |
94 | * This structure is used to hold the arguments that are | |
95 | * used when loading binaries. | |
96 | */ | |
97 | struct linux_binprm { | |
98 | char buf[128]; | |
99 | void *page[MAX_ARG_PAGES]; | |
100 | unsigned long p; | |
101 | int fd; | |
102 | int e_uid, e_gid; | |
103 | int argc, envc; | |
104 | char **argv; | |
105 | char **envp; | |
106 | char * filename; /* Name of binary */ | |
107 | }; | |
108 | ||
109 | void do_init_thread(struct target_pt_regs *regs, struct image_info *infop); | |
110 | target_ulong loader_build_argptr(int envc, int argc, target_ulong sp, | |
111 | target_ulong stringp, int push_ptr); | |
112 | int loader_exec(const char * filename, char ** argv, char ** envp, | |
01ffc75b | 113 | struct target_pt_regs * regs, struct image_info *infop); |
31e31b8a | 114 | |
e5fe0c52 PB |
115 | int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs, |
116 | struct image_info * info); | |
117 | int load_flt_binary(struct linux_binprm * bprm, struct target_pt_regs * regs, | |
118 | struct image_info * info); | |
119 | ||
120 | void memcpy_to_target(target_ulong dest, const void *src, | |
121 | unsigned long len); | |
53a5960a PB |
122 | void target_set_brk(target_ulong new_brk); |
123 | long do_brk(target_ulong new_brk); | |
31e31b8a | 124 | void syscall_init(void); |
6dbad63e | 125 | long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3, |
31e31b8a FB |
126 | long arg4, long arg5, long arg6); |
127 | void gemu_log(const char *fmt, ...) __attribute__((format(printf,1,2))); | |
b346ff46 FB |
128 | extern CPUState *global_env; |
129 | void cpu_loop(CPUState *env); | |
32ce6337 FB |
130 | void init_paths(const char *prefix); |
131 | const char *path(const char *pathname); | |
6977fbfd FB |
132 | |
133 | extern int loglevel; | |
631271d7 FB |
134 | extern FILE *logfile; |
135 | ||
b346ff46 FB |
136 | /* signal.c */ |
137 | void process_pending_signals(void *cpu_env); | |
138 | void signal_init(void); | |
139 | int queue_signal(int sig, target_siginfo_t *info); | |
140 | void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info); | |
141 | void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo); | |
142 | long do_sigreturn(CPUState *env); | |
143 | long do_rt_sigreturn(CPUState *env); | |
144 | ||
145 | #ifdef TARGET_I386 | |
631271d7 FB |
146 | /* vm86.c */ |
147 | void save_v86_state(CPUX86State *env); | |
447db213 | 148 | void handle_vm86_trap(CPUX86State *env, int trapno); |
631271d7 | 149 | void handle_vm86_fault(CPUX86State *env); |
53a5960a | 150 | int do_vm86(CPUX86State *env, long subfunction, target_ulong v86_addr); |
b346ff46 | 151 | #endif |
631271d7 | 152 | |
54936004 | 153 | /* mmap.c */ |
53a5960a PB |
154 | int target_mprotect(target_ulong start, target_ulong len, int prot); |
155 | long target_mmap(target_ulong start, target_ulong len, int prot, | |
156 | int flags, int fd, target_ulong offset); | |
157 | int target_munmap(target_ulong start, target_ulong len); | |
158 | long target_mremap(target_ulong old_addr, target_ulong old_size, | |
159 | target_ulong new_size, unsigned long flags, | |
160 | target_ulong new_addr); | |
161 | int target_msync(target_ulong start, target_ulong len, int flags); | |
54936004 | 162 | |
edf779ff FB |
163 | /* user access */ |
164 | ||
165 | #define VERIFY_READ 0 | |
166 | #define VERIFY_WRITE 1 | |
167 | ||
168 | #define access_ok(type,addr,size) (1) | |
169 | ||
53a5960a | 170 | /* NOTE get_user and put_user use host addresses. */ |
edf779ff FB |
171 | #define __put_user(x,ptr)\ |
172 | ({\ | |
173 | int size = sizeof(*ptr);\ | |
174 | switch(size) {\ | |
175 | case 1:\ | |
53a5960a | 176 | *(uint8_t *)(ptr) = (typeof(*ptr))(x);\ |
edf779ff FB |
177 | break;\ |
178 | case 2:\ | |
53a5960a | 179 | *(uint16_t *)(ptr) = tswap16((typeof(*ptr))(x));\ |
edf779ff FB |
180 | break;\ |
181 | case 4:\ | |
53a5960a | 182 | *(uint32_t *)(ptr) = tswap32((typeof(*ptr))(x));\ |
edf779ff FB |
183 | break;\ |
184 | case 8:\ | |
53a5960a | 185 | *(uint64_t *)(ptr) = tswap64((typeof(*ptr))(x));\ |
edf779ff FB |
186 | break;\ |
187 | default:\ | |
188 | abort();\ | |
189 | }\ | |
190 | 0;\ | |
191 | }) | |
192 | ||
193 | #define __get_user(x, ptr) \ | |
194 | ({\ | |
195 | int size = sizeof(*ptr);\ | |
196 | switch(size) {\ | |
197 | case 1:\ | |
53a5960a | 198 | x = (typeof(*ptr))*(uint8_t *)(ptr);\ |
edf779ff FB |
199 | break;\ |
200 | case 2:\ | |
53a5960a | 201 | x = (typeof(*ptr))tswap16(*(uint16_t *)(ptr));\ |
edf779ff FB |
202 | break;\ |
203 | case 4:\ | |
53a5960a | 204 | x = (typeof(*ptr))tswap32(*(uint32_t *)(ptr));\ |
edf779ff FB |
205 | break;\ |
206 | case 8:\ | |
53a5960a | 207 | x = (typeof(*ptr))tswap64(*(uint64_t *)(ptr));\ |
edf779ff FB |
208 | break;\ |
209 | default:\ | |
210 | abort();\ | |
211 | }\ | |
212 | 0;\ | |
213 | }) | |
214 | ||
edf779ff FB |
215 | #define put_user(x,ptr)\ |
216 | ({\ | |
217 | int __ret;\ | |
218 | if (access_ok(VERIFY_WRITE, ptr, sizeof(*ptr)))\ | |
219 | __ret = __put_user(x, ptr);\ | |
220 | else\ | |
221 | __ret = -EFAULT;\ | |
222 | __ret;\ | |
223 | }) | |
224 | ||
225 | #define get_user(x,ptr)\ | |
226 | ({\ | |
227 | int __ret;\ | |
228 | if (access_ok(VERIFY_READ, ptr, sizeof(*ptr)))\ | |
229 | __ret = __get_user(x, ptr);\ | |
230 | else\ | |
231 | __ret = -EFAULT;\ | |
232 | __ret;\ | |
233 | }) | |
234 | ||
53a5960a PB |
235 | /* Functions for accessing guest memory. The tget and tput functions |
236 | read/write single values, byteswapping as neccessary. The lock_user | |
237 | gets a pointer to a contiguous area of guest memory, but does not perform | |
238 | and byteswapping. lock_user may return either a pointer to the guest | |
239 | memory, or a temporary buffer. */ | |
240 | ||
241 | /* Lock an area of guest memory into the host. If copy is true then the | |
242 | host area will have the same contents as the guest. */ | |
243 | static inline void *lock_user(target_ulong guest_addr, long len, int copy) | |
edf779ff | 244 | { |
53a5960a PB |
245 | #ifdef DEBUG_REMAP |
246 | void *addr; | |
247 | addr = malloc(len); | |
248 | if (copy) | |
249 | memcpy(addr, g2h(guest_addr), len); | |
edf779ff | 250 | else |
53a5960a PB |
251 | memset(addr, 0, len); |
252 | return addr; | |
253 | #else | |
254 | return g2h(guest_addr); | |
255 | #endif | |
edf779ff FB |
256 | } |
257 | ||
53a5960a PB |
258 | /* Unlock an area of guest memory. The first LEN bytes must be flushed back |
259 | to guest memory. */ | |
260 | static inline void unlock_user(void *host_addr, target_ulong guest_addr, | |
261 | long len) | |
edf779ff | 262 | { |
53a5960a PB |
263 | #ifdef DEBUG_REMAP |
264 | if (host_addr == g2h(guest_addr)) | |
265 | return; | |
266 | if (len > 0) | |
267 | memcpy(g2h(guest_addr), host_addr, len); | |
268 | free(host_addr); | |
269 | #endif | |
edf779ff FB |
270 | } |
271 | ||
53a5960a PB |
272 | /* Return the length of a string in target memory. */ |
273 | static inline int target_strlen(target_ulong ptr) | |
edf779ff | 274 | { |
53a5960a PB |
275 | return strlen(g2h(ptr)); |
276 | } | |
277 | ||
278 | /* Like lock_user but for null terminated strings. */ | |
279 | static inline void *lock_user_string(target_ulong guest_addr) | |
280 | { | |
281 | long len; | |
282 | len = target_strlen(guest_addr) + 1; | |
283 | return lock_user(guest_addr, len, 1); | |
edf779ff FB |
284 | } |
285 | ||
53a5960a PB |
286 | /* Helper macros for locking/ulocking a target struct. */ |
287 | #define lock_user_struct(host_ptr, guest_addr, copy) \ | |
288 | host_ptr = lock_user(guest_addr, sizeof(*host_ptr), copy) | |
289 | #define unlock_user_struct(host_ptr, guest_addr, copy) \ | |
290 | unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0) | |
291 | ||
292 | #define tget8(addr) ldub(addr) | |
293 | #define tput8(addr, val) stb(addr, val) | |
294 | #define tget16(addr) lduw(addr) | |
295 | #define tput16(addr, val) stw(addr, val) | |
296 | #define tget32(addr) ldl(addr) | |
297 | #define tput32(addr, val) stl(addr, val) | |
298 | #define tget64(addr) ldq(addr) | |
299 | #define tput64(addr, val) stq(addr, val) | |
300 | #if TARGET_LONG_BITS == 64 | |
301 | #define tgetl(addr) ldq(addr) | |
302 | #define tputl(addr, val) stq(addr, val) | |
303 | #else | |
304 | #define tgetl(addr) ldl(addr) | |
305 | #define tputl(addr, val) stl(addr, val) | |
306 | #endif | |
307 | ||
e88de099 | 308 | #endif /* QEMU_H */ |