8 #include "syscall_defs.h"
13 /* This struct is used to hold certain information about the image.
14 * Basically, it replicates in user space what would be certain
15 * task_struct fields in the kernel
18 unsigned long start_code;
19 unsigned long end_code;
20 unsigned long end_data;
21 unsigned long start_brk;
23 unsigned long start_mmap;
26 unsigned long start_stack;
27 unsigned long arg_start;
28 unsigned long arg_end;
29 unsigned long env_start;
30 unsigned long env_end;
36 /* Information about the current linux thread */
37 struct vm86_saved_state {
38 uint32_t eax; /* return code */
48 uint16_t cs, ss, ds, es, fs, gs;
54 #include "nwfpe/fpa11.h"
59 /* NOTE: we force a big alignment so that the stack stored after is
61 typedef struct TaskState {
62 struct TaskState *next;
68 struct target_vm86plus_struct *target_v86;
69 struct vm86_saved_state vm86_saved_regs;
70 struct target_vm86plus_struct vm86plus;
74 int used; /* non zero if used */
76 } __attribute__((aligned(16))) TaskState;
78 extern TaskState *first_task_state;
80 int elf_exec(const char * filename, char ** argv, char ** envp,
81 struct target_pt_regs * regs, struct image_info *infop);
83 void target_set_brk(char *new_brk);
84 void syscall_init(void);
85 long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
86 long arg4, long arg5, long arg6);
87 void gemu_log(const char *fmt, ...) __attribute__((format(printf,1,2)));
88 extern CPUState *global_env;
89 void cpu_loop(CPUState *env);
90 void init_paths(const char *prefix);
91 const char *path(const char *pathname);
97 void process_pending_signals(void *cpu_env);
98 void signal_init(void);
99 int queue_signal(int sig, target_siginfo_t *info);
100 void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info);
101 void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo);
102 long do_sigreturn(CPUState *env);
103 long do_rt_sigreturn(CPUState *env);
107 void save_v86_state(CPUX86State *env);
108 void handle_vm86_trap(CPUX86State *env, int trapno);
109 void handle_vm86_fault(CPUX86State *env);
110 int do_vm86(CPUX86State *env, long subfunction,
111 struct target_vm86plus_struct * target_v86);
115 int target_mprotect(unsigned long start, unsigned long len, int prot);
116 long target_mmap(unsigned long start, unsigned long len, int prot,
117 int flags, int fd, unsigned long offset);
118 int target_munmap(unsigned long start, unsigned long len);
119 long target_mremap(unsigned long old_addr, unsigned long old_size,
120 unsigned long new_size, unsigned long flags,
121 unsigned long new_addr);
122 int target_msync(unsigned long start, unsigned long len, int flags);
126 #define VERIFY_READ 0
127 #define VERIFY_WRITE 1
129 #define access_ok(type,addr,size) (1)
131 #define __put_user(x,ptr)\
133 int size = sizeof(*ptr);\
136 stb(ptr, (typeof(*ptr))(x));\
139 stw(ptr, (typeof(*ptr))(x));\
142 stl(ptr, (typeof(*ptr))(x));\
145 stq(ptr, (typeof(*ptr))(x));\
153 #define __get_user(x, ptr) \
155 int size = sizeof(*ptr);\
158 x = (typeof(*ptr))ldub((void *)ptr);\
161 x = (typeof(*ptr))lduw((void *)ptr);\
164 x = (typeof(*ptr))ldl((void *)ptr);\
167 x = (typeof(*ptr))ldq((void *)ptr);\
175 static inline unsigned long __copy_to_user(void *dst, const void *src,
178 memcpy(dst, src, size);
182 static inline unsigned long __copy_from_user(void *dst, const void *src,
185 memcpy(dst, src, size);
189 static inline unsigned long __clear_user(void *dst, unsigned long size)
191 memset(dst, 0, size);
195 #define put_user(x,ptr)\
198 if (access_ok(VERIFY_WRITE, ptr, sizeof(*ptr)))\
199 __ret = __put_user(x, ptr);\
205 #define get_user(x,ptr)\
208 if (access_ok(VERIFY_READ, ptr, sizeof(*ptr)))\
209 __ret = __get_user(x, ptr);\
215 static inline unsigned long copy_to_user(void *dst, const void *src,
218 if (access_ok(VERIFY_WRITE, dst, size))
219 return __copy_to_user(dst, src, size);
224 static inline unsigned long copy_from_user(void *dst, const void *src,
227 if (access_ok(VERIFY_READ, src, size))
228 return __copy_from_user(dst, src, size);
233 static inline unsigned long clear_user(void *dst, unsigned long size)
235 if (access_ok(VERIFY_WRITE, dst, size))
236 return __clear_user(dst, size);