int swi_errno;
#endif
#ifdef TARGET_I386
- struct target_vm86plus_struct *target_v86;
+ target_ulong target_v86;
struct vm86_saved_state vm86_saved_regs;
struct target_vm86plus_struct vm86plus;
uint32_t v86flags;
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);
-long do_brk(char *new_brk);
+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 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);
+int do_vm86(CPUX86State *env, long subfunction, target_ulong v86_addr);
#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);
+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 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:\
- stb(ptr, (typeof(*ptr))(x));\
+ *(uint8_t *)(ptr) = (typeof(*ptr))(x);\
break;\
case 2:\
- stw(ptr, (typeof(*ptr))(x));\
+ *(uint16_t *)(ptr) = tswap16((typeof(*ptr))(x));\
break;\
case 4:\
- stl(ptr, (typeof(*ptr))(x));\
+ *(uint32_t *)(ptr) = tswap32((typeof(*ptr))(x));\
break;\
case 8:\
- stq(ptr, (typeof(*ptr))(x));\
+ *(uint64_t *)(ptr) = tswap64((typeof(*ptr))(x));\
break;\
default:\
abort();\
int size = sizeof(*ptr);\
switch(size) {\
case 1:\
- x = (typeof(*ptr))ldub((void *)ptr);\
+ x = (typeof(*ptr))*(uint8_t *)(ptr);\
break;\
case 2:\
- x = (typeof(*ptr))lduw((void *)ptr);\
+ x = (typeof(*ptr))tswap16(*(uint16_t *)(ptr));\
break;\
case 4:\
- x = (typeof(*ptr))ldl((void *)ptr);\
+ x = (typeof(*ptr))tswap32(*(uint32_t *)(ptr));\
break;\
case 8:\
- x = (typeof(*ptr))ldq((void *)ptr);\
+ x = (typeof(*ptr))tswap64(*(uint64_t *)(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;\
__ret;\
})
-static inline unsigned long copy_to_user(void *dst, const void *src,
- unsigned long size)
+/* 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)
{
- if (access_ok(VERIFY_WRITE, dst, size))
- return __copy_to_user(dst, src, size);
+#ifdef DEBUG_REMAP
+ void *addr;
+ addr = malloc(len);
+ if (copy)
+ memcpy(addr, g2h(guest_addr), len);
else
- return size;
+ memset(addr, 0, len);
+ return addr;
+#else
+ return g2h(guest_addr);
+#endif
}
-static inline unsigned long copy_from_user(void *dst, const void *src,
- unsigned long size)
+/* 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)
{
- if (access_ok(VERIFY_READ, src, size))
- return __copy_from_user(dst, src, size);
- else
- return size;
+#ifdef DEBUG_REMAP
+ if (host_addr == g2h(guest_addr))
+ return;
+ if (len > 0)
+ memcpy(g2h(guest_addr), host_addr, len);
+ free(host_addr);
+#endif
}
-static inline unsigned long clear_user(void *dst, unsigned long size)
+/* Return the length of a string in target memory. */
+static inline int target_strlen(target_ulong ptr)
{
- if (access_ok(VERIFY_WRITE, dst, size))
- return __clear_user(dst, size);
- else
- return size;
+ 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 */
projects / qemu / blobdiff