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