Archipelago » qemu

#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