978efd6aac
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1986 c046a42c-6fe2-441c-8c8c-71466251a162
309 lines
8.4 KiB
C
309 lines
8.4 KiB
C
#ifndef QEMU_H
|
|
#define QEMU_H
|
|
|
|
#include "thunk.h"
|
|
|
|
#include <signal.h>
|
|
#include <string.h>
|
|
#include "syscall_defs.h"
|
|
|
|
#include "cpu.h"
|
|
#include "syscall.h"
|
|
#include "gdbstub.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 start_data;
|
|
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 entry;
|
|
target_ulong code_offset;
|
|
target_ulong data_offset;
|
|
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"
|
|
#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;
|
|
/* Extra fields for semihosted binaries. */
|
|
uint32_t stack_base;
|
|
uint32_t heap_base;
|
|
uint32_t heap_limit;
|
|
int swi_errno;
|
|
#endif
|
|
#ifdef TARGET_I386
|
|
target_ulong 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 */
|
|
struct image_info *info;
|
|
uint8_t stack[0];
|
|
} __attribute__((aligned(16))) TaskState;
|
|
|
|
extern TaskState *first_task_state;
|
|
extern const char *qemu_uname_release;
|
|
|
|
/* ??? See if we can avoid exposing so much of the loader internals. */
|
|
/*
|
|
* MAX_ARG_PAGES defines the number of pages allocated for arguments
|
|
* and envelope for the new program. 32 should suffice, this gives
|
|
* a maximum env+arg of 128kB w/4KB pages!
|
|
*/
|
|
#define MAX_ARG_PAGES 32
|
|
|
|
/*
|
|
* This structure is used to hold the arguments that are
|
|
* used when loading binaries.
|
|
*/
|
|
struct linux_binprm {
|
|
char buf[128];
|
|
void *page[MAX_ARG_PAGES];
|
|
unsigned long p;
|
|
int fd;
|
|
int e_uid, e_gid;
|
|
int argc, envc;
|
|
char **argv;
|
|
char **envp;
|
|
char * filename; /* Name of binary */
|
|
};
|
|
|
|
void do_init_thread(struct target_pt_regs *regs, struct image_info *infop);
|
|
target_ulong loader_build_argptr(int envc, int argc, target_ulong sp,
|
|
target_ulong stringp, int push_ptr);
|
|
int loader_exec(const char * filename, char ** argv, char ** envp,
|
|
struct target_pt_regs * regs, struct image_info *infop);
|
|
|
|
int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
|
|
struct image_info * info);
|
|
int load_flt_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
|
|
struct image_info * info);
|
|
|
|
void memcpy_to_target(target_ulong dest, const void *src,
|
|
unsigned long len);
|
|
void target_set_brk(target_ulong new_brk);
|
|
long do_brk(target_ulong 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, target_ulong v86_addr);
|
|
#endif
|
|
|
|
/* mmap.c */
|
|
int target_mprotect(target_ulong start, target_ulong len, int prot);
|
|
long target_mmap(target_ulong start, target_ulong len, int prot,
|
|
int flags, int fd, target_ulong offset);
|
|
int target_munmap(target_ulong start, target_ulong len);
|
|
long target_mremap(target_ulong old_addr, target_ulong old_size,
|
|
target_ulong new_size, unsigned long flags,
|
|
target_ulong new_addr);
|
|
int target_msync(target_ulong start, target_ulong len, int flags);
|
|
|
|
/* user access */
|
|
|
|
#define VERIFY_READ 0
|
|
#define VERIFY_WRITE 1
|
|
|
|
#define access_ok(type,addr,size) (1)
|
|
|
|
/* NOTE get_user and put_user use host addresses. */
|
|
#define __put_user(x,ptr)\
|
|
({\
|
|
int size = sizeof(*ptr);\
|
|
switch(size) {\
|
|
case 1:\
|
|
*(uint8_t *)(ptr) = (typeof(*ptr))(x);\
|
|
break;\
|
|
case 2:\
|
|
*(uint16_t *)(ptr) = tswap16((typeof(*ptr))(x));\
|
|
break;\
|
|
case 4:\
|
|
*(uint32_t *)(ptr) = tswap32((typeof(*ptr))(x));\
|
|
break;\
|
|
case 8:\
|
|
*(uint64_t *)(ptr) = tswap64((typeof(*ptr))(x));\
|
|
break;\
|
|
default:\
|
|
abort();\
|
|
}\
|
|
0;\
|
|
})
|
|
|
|
#define __get_user(x, ptr) \
|
|
({\
|
|
int size = sizeof(*ptr);\
|
|
switch(size) {\
|
|
case 1:\
|
|
x = (typeof(*ptr))*(uint8_t *)(ptr);\
|
|
break;\
|
|
case 2:\
|
|
x = (typeof(*ptr))tswap16(*(uint16_t *)(ptr));\
|
|
break;\
|
|
case 4:\
|
|
x = (typeof(*ptr))tswap32(*(uint32_t *)(ptr));\
|
|
break;\
|
|
case 8:\
|
|
x = (typeof(*ptr))tswap64(*(uint64_t *)(ptr));\
|
|
break;\
|
|
default:\
|
|
abort();\
|
|
}\
|
|
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;\
|
|
})
|
|
|
|
/* Functions for accessing guest memory. The tget and tput functions
|
|
read/write single values, byteswapping as neccessary. The lock_user
|
|
gets a pointer to a contiguous area of guest memory, but does not perform
|
|
and byteswapping. lock_user may return either a pointer to the guest
|
|
memory, or a temporary buffer. */
|
|
|
|
/* Lock an area of guest memory into the host. If copy is true then the
|
|
host area will have the same contents as the guest. */
|
|
static inline void *lock_user(target_ulong guest_addr, long len, int copy)
|
|
{
|
|
#ifdef DEBUG_REMAP
|
|
void *addr;
|
|
addr = malloc(len);
|
|
if (copy)
|
|
memcpy(addr, g2h(guest_addr), len);
|
|
else
|
|
memset(addr, 0, len);
|
|
return addr;
|
|
#else
|
|
return g2h(guest_addr);
|
|
#endif
|
|
}
|
|
|
|
/* Unlock an area of guest memory. The first LEN bytes must be flushed back
|
|
to guest memory. */
|
|
static inline void unlock_user(void *host_addr, target_ulong guest_addr,
|
|
long len)
|
|
{
|
|
#ifdef DEBUG_REMAP
|
|
if (host_addr == g2h(guest_addr))
|
|
return;
|
|
if (len > 0)
|
|
memcpy(g2h(guest_addr), host_addr, len);
|
|
free(host_addr);
|
|
#endif
|
|
}
|
|
|
|
/* Return the length of a string in target memory. */
|
|
static inline int target_strlen(target_ulong ptr)
|
|
{
|
|
return strlen(g2h(ptr));
|
|
}
|
|
|
|
/* Like lock_user but for null terminated strings. */
|
|
static inline void *lock_user_string(target_ulong guest_addr)
|
|
{
|
|
long len;
|
|
len = target_strlen(guest_addr) + 1;
|
|
return lock_user(guest_addr, len, 1);
|
|
}
|
|
|
|
/* Helper macros for locking/ulocking a target struct. */
|
|
#define lock_user_struct(host_ptr, guest_addr, copy) \
|
|
host_ptr = lock_user(guest_addr, sizeof(*host_ptr), copy)
|
|
#define unlock_user_struct(host_ptr, guest_addr, copy) \
|
|
unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0)
|
|
|
|
#define tget8(addr) ldub(addr)
|
|
#define tput8(addr, val) stb(addr, val)
|
|
#define tget16(addr) lduw(addr)
|
|
#define tput16(addr, val) stw(addr, val)
|
|
#define tget32(addr) ldl(addr)
|
|
#define tput32(addr, val) stl(addr, val)
|
|
#define tget64(addr) ldq(addr)
|
|
#define tput64(addr, val) stq(addr, val)
|
|
#if TARGET_LONG_BITS == 64
|
|
#define tgetl(addr) ldq(addr)
|
|
#define tputl(addr, val) stq(addr, val)
|
|
#else
|
|
#define tgetl(addr) ldl(addr)
|
|
#define tputl(addr, val) stl(addr, val)
|
|
#endif
|
|
|
|
#endif /* QEMU_H */
|