mirror of https://gitee.com/openkylin/qemu.git
71 lines
2.0 KiB
C
71 lines
2.0 KiB
C
/*
|
|
* Helper routines to provide target memory access for semihosting
|
|
* syscalls in system emulation mode.
|
|
*
|
|
* Copyright (c) 2007 CodeSourcery.
|
|
*
|
|
* This code is licenced under the GPL
|
|
*/
|
|
|
|
static inline uint32_t softmmu_tget32(CPUState *env, uint32_t addr)
|
|
{
|
|
uint32_t val;
|
|
|
|
cpu_memory_rw_debug(env, addr, (uint8_t *)&val, 4, 0);
|
|
return tswap32(val);
|
|
}
|
|
static inline uint32_t softmmu_tget8(CPUState *env, uint32_t addr)
|
|
{
|
|
uint8_t val;
|
|
|
|
cpu_memory_rw_debug(env, addr, &val, 1, 0);
|
|
return val;
|
|
}
|
|
|
|
#define get_user_u32(arg, p) ({ arg = softmmu_tget32(env, p) ; 0; })
|
|
#define get_user_u8(arg, p) ({ arg = softmmu_tget8(env, p) ; 0; })
|
|
#define get_user_ual(arg, p) get_user_u32(arg, p)
|
|
|
|
static inline void softmmu_tput32(CPUState *env, uint32_t addr, uint32_t val)
|
|
{
|
|
val = tswap32(val);
|
|
cpu_memory_rw_debug(env, addr, (uint8_t *)&val, 4, 1);
|
|
}
|
|
#define put_user_u32(arg, p) ({ softmmu_tput32(env, p, arg) ; 0; })
|
|
#define put_user_ual(arg, p) put_user_u32(arg, p)
|
|
|
|
static void *softmmu_lock_user(CPUState *env, uint32_t addr, uint32_t len,
|
|
int copy)
|
|
{
|
|
uint8_t *p;
|
|
/* TODO: Make this something that isn't fixed size. */
|
|
p = malloc(len);
|
|
if (copy)
|
|
cpu_memory_rw_debug(env, addr, p, len, 0);
|
|
return p;
|
|
}
|
|
#define lock_user(type, p, len, copy) softmmu_lock_user(env, p, len, copy)
|
|
static char *softmmu_lock_user_string(CPUState *env, uint32_t addr)
|
|
{
|
|
char *p;
|
|
char *s;
|
|
uint8_t c;
|
|
/* TODO: Make this something that isn't fixed size. */
|
|
s = p = malloc(1024);
|
|
do {
|
|
cpu_memory_rw_debug(env, addr, &c, 1, 0);
|
|
addr++;
|
|
*(p++) = c;
|
|
} while (c);
|
|
return s;
|
|
}
|
|
#define lock_user_string(p) softmmu_lock_user_string(env, p)
|
|
static void softmmu_unlock_user(CPUState *env, void *p, target_ulong addr,
|
|
target_ulong len)
|
|
{
|
|
if (len)
|
|
cpu_memory_rw_debug(env, addr, p, len, 1);
|
|
free(p);
|
|
}
|
|
#define unlock_user(s, args, len) softmmu_unlock_user(env, s, args, len)
|