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#ifndef GEMU_H
#define GEMU_H
#include "thunk.h"
#include <signal.h>
#include <string.h>
#include "syscall_defs.h"
#include "cpu.h"
#include "syscall.h"
/* This struct is used to hold certain information about the image.
* Basically, it replicates in user space what would be certain
* task_struct fields in the kernel
*/
struct image_info {
unsigned long start_code;
unsigned long end_code;
unsigned long end_data;
unsigned long start_brk;
unsigned long brk;
unsigned long start_mmap;
unsigned long mmap;
unsigned long rss;
unsigned long start_stack;
unsigned long arg_start;
unsigned long arg_end;
unsigned long env_start;
unsigned long env_end;
unsigned long entry;
int personality;
};
#ifdef TARGET_I386
/* Information about the current linux thread */
struct vm86_saved_state {
uint32_t eax; /* return code */
uint32_t ebx;
uint32_t ecx;
uint32_t edx;
uint32_t esi;
uint32_t edi;
uint32_t ebp;
uint32_t esp;
uint32_t eflags;
uint32_t eip;
uint16_t cs, ss, ds, es, fs, gs;
};
#endif
#ifdef TARGET_ARM
/* FPU emulator */
#include "nwfpe/fpa11.h"
#undef put_user
#undef get_user
#endif
/* NOTE: we force a big alignment so that the stack stored after is
aligned too */
typedef struct TaskState {
struct TaskState *next;
#ifdef TARGET_ARM
/* FPA state */
FPA11 fpa;
#endif
#ifdef TARGET_I386
struct target_vm86plus_struct *target_v86;
struct vm86_saved_state vm86_saved_regs;
struct target_vm86plus_struct vm86plus;
uint32_t v86flags;
uint32_t v86mask;
#endif
int used; /* non zero if used */
uint8_t stack[0];
} __attribute__((aligned(16))) TaskState;
extern TaskState *first_task_state;
int elf_exec(const char * filename, char ** argv, char ** envp,
struct target_pt_regs * regs, struct image_info *infop);
void target_set_brk(char *new_brk);
void syscall_init(void);
long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
long arg4, long arg5, long arg6);
void gemu_log(const char *fmt, ...) __attribute__((format(printf,1,2)));
extern CPUState *global_env;
void cpu_loop(CPUState *env);
void init_paths(const char *prefix);
const char *path(const char *pathname);
extern int loglevel;
extern FILE *logfile;
/* signal.c */
void process_pending_signals(void *cpu_env);
void signal_init(void);
int queue_signal(int sig, target_siginfo_t *info);
void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info);
void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo);
long do_sigreturn(CPUState *env);
long do_rt_sigreturn(CPUState *env);
#ifdef TARGET_I386
/* vm86.c */
void save_v86_state(CPUX86State *env);
void handle_vm86_trap(CPUX86State *env, int trapno);
void handle_vm86_fault(CPUX86State *env);
int do_vm86(CPUX86State *env, long subfunction,
struct target_vm86plus_struct * target_v86);
#endif
/* mmap.c */
int target_mprotect(unsigned long start, unsigned long len, int prot);
long target_mmap(unsigned long start, unsigned long len, int prot,
int flags, int fd, unsigned long offset);
int target_munmap(unsigned long start, unsigned long len);
long target_mremap(unsigned long old_addr, unsigned long old_size,
unsigned long new_size, unsigned long flags,
unsigned long new_addr);
int target_msync(unsigned long start, unsigned long len, int flags);
/* user access */
#define VERIFY_READ 0
#define VERIFY_WRITE 1
#define access_ok(type,addr,size) (1)
#define __put_user(x,ptr)\
({\
int size = sizeof(*ptr);\
switch(size) {\
case 1:\
stb(ptr, (typeof(*ptr))(x));\
break;\
case 2:\
stw(ptr, (typeof(*ptr))(x));\
break;\
case 4:\
stl(ptr, (typeof(*ptr))(x));\
break;\
case 8:\
stq(ptr, (typeof(*ptr))(x));\
break;\
default:\
abort();\
}\
0;\
})
#define __get_user(x, ptr) \
({\
int size = sizeof(*ptr);\
switch(size) {\
case 1:\
x = (typeof(*ptr))ldub(ptr);\
break;\
case 2:\
x = (typeof(*ptr))lduw(ptr);\
break;\
case 4:\
x = (typeof(*ptr))ldl(ptr);\
break;\
case 8:\
x = (typeof(*ptr))ldq(ptr);\
break;\
default:\
abort();\
}\
0;\
})
static inline unsigned long __copy_to_user(void *dst, const void *src,
unsigned long size)
{
memcpy(dst, src, size);
return 0;
}
static inline unsigned long __copy_from_user(void *dst, const void *src,
unsigned long size)
{
memcpy(dst, src, size);
return 0;
}
static inline unsigned long __clear_user(void *dst, unsigned long size)
{
memset(dst, 0, size);
return 0;
}
#define put_user(x,ptr)\
({\
int __ret;\
if (access_ok(VERIFY_WRITE, ptr, sizeof(*ptr)))\
__ret = __put_user(x, ptr);\
else\
__ret = -EFAULT;\
__ret;\
})
#define get_user(x,ptr)\
({\
int __ret;\
if (access_ok(VERIFY_READ, ptr, sizeof(*ptr)))\
__ret = __get_user(x, ptr);\
else\
__ret = -EFAULT;\
__ret;\
})
static inline unsigned long copy_to_user(void *dst, const void *src,
unsigned long size)
{
if (access_ok(VERIFY_WRITE, dst, size))
return __copy_to_user(dst, src, size);
else
return size;
}
static inline unsigned long copy_from_user(void *dst, const void *src,
unsigned long size)
{
if (access_ok(VERIFY_READ, src, size))
return __copy_from_user(dst, src, size);
else
return size;
}
static inline unsigned long clear_user(void *dst, unsigned long size)
{
if (access_ok(VERIFY_WRITE, dst, size))
return __clear_user(dst, size);
else
return size;
}
#endif
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