8 #include "syscall_defs.h"
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
19 unsigned long start_code;
20 unsigned long end_code;
21 unsigned long end_data;
22 unsigned long start_brk;
24 unsigned long start_mmap;
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;
37 /* Information about the current linux thread */
38 struct vm86_saved_state {
39 uint32_t eax; /* return code */
49 uint16_t cs, ss, ds, es, fs, gs;
55 #include "nwfpe/fpa11.h"
58 /* NOTE: we force a big alignment so that the stack stored after is
60 typedef struct TaskState {
61 struct TaskState *next;
65 /* Extra fields for semihosted binaries. */
72 struct target_vm86plus_struct *target_v86;
73 struct vm86_saved_state vm86_saved_regs;
74 struct target_vm86plus_struct vm86plus;
78 int used; /* non zero if used */
80 } __attribute__((aligned(16))) TaskState;
82 extern TaskState *first_task_state;
84 int elf_exec(const char * filename, char ** argv, char ** envp,
85 struct target_pt_regs * regs, struct image_info *infop);
87 void target_set_brk(char *new_brk);
88 long do_brk(char *new_brk);
89 void syscall_init(void);
90 long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
91 long arg4, long arg5, long arg6);
92 void gemu_log(const char *fmt, ...) __attribute__((format(printf,1,2)));
93 extern CPUState *global_env;
94 void cpu_loop(CPUState *env);
95 void init_paths(const char *prefix);
96 const char *path(const char *pathname);
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);
112 void save_v86_state(CPUX86State *env);
113 void handle_vm86_trap(CPUX86State *env, int trapno);
114 void handle_vm86_fault(CPUX86State *env);
115 int do_vm86(CPUX86State *env, long subfunction,
116 struct target_vm86plus_struct * target_v86);
120 int target_mprotect(unsigned long start, unsigned long len, int prot);
121 long target_mmap(unsigned long start, unsigned long len, int prot,
122 int flags, int fd, unsigned long offset);
123 int target_munmap(unsigned long start, unsigned long len);
124 long target_mremap(unsigned long old_addr, unsigned long old_size,
125 unsigned long new_size, unsigned long flags,
126 unsigned long new_addr);
127 int target_msync(unsigned long start, unsigned long len, int flags);
131 #define VERIFY_READ 0
132 #define VERIFY_WRITE 1
134 #define access_ok(type,addr,size) (1)
136 #define __put_user(x,ptr)\
138 int size = sizeof(*ptr);\
141 stb(ptr, (typeof(*ptr))(x));\
144 stw(ptr, (typeof(*ptr))(x));\
147 stl(ptr, (typeof(*ptr))(x));\
150 stq(ptr, (typeof(*ptr))(x));\
158 #define __get_user(x, ptr) \
160 int size = sizeof(*ptr);\
163 x = (typeof(*ptr))ldub((void *)ptr);\
166 x = (typeof(*ptr))lduw((void *)ptr);\
169 x = (typeof(*ptr))ldl((void *)ptr);\
172 x = (typeof(*ptr))ldq((void *)ptr);\
180 static inline unsigned long __copy_to_user(void *dst, const void *src,
183 memcpy(dst, src, size);
187 static inline unsigned long __copy_from_user(void *dst, const void *src,
190 memcpy(dst, src, size);
194 static inline unsigned long __clear_user(void *dst, unsigned long size)
196 memset(dst, 0, size);
200 #define put_user(x,ptr)\
203 if (access_ok(VERIFY_WRITE, ptr, sizeof(*ptr)))\
204 __ret = __put_user(x, ptr);\
210 #define get_user(x,ptr)\
213 if (access_ok(VERIFY_READ, ptr, sizeof(*ptr)))\
214 __ret = __get_user(x, ptr);\
220 static inline unsigned long copy_to_user(void *dst, const void *src,
223 if (access_ok(VERIFY_WRITE, dst, size))
224 return __copy_to_user(dst, src, size);
229 static inline unsigned long copy_from_user(void *dst, const void *src,
232 if (access_ok(VERIFY_READ, src, size))
233 return __copy_from_user(dst, src, size);
238 static inline unsigned long clear_user(void *dst, unsigned long size)
240 if (access_ok(VERIFY_WRITE, dst, size))
241 return __clear_user(dst, size);