diff options
Diffstat (limited to 'qemu/include/exec/softmmu-semi.h')
-rw-r--r-- | qemu/include/exec/softmmu-semi.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/qemu/include/exec/softmmu-semi.h b/qemu/include/exec/softmmu-semi.h new file mode 100644 index 000000000..1819cc249 --- /dev/null +++ b/qemu/include/exec/softmmu-semi.h @@ -0,0 +1,80 @@ +/* + * Helper routines to provide target memory access for semihosting + * syscalls in system emulation mode. + * + * Copyright (c) 2007 CodeSourcery. + * + * This code is licensed under the GPL + */ +#ifndef SOFTMMU_SEMI_H +#define SOFTMMU_SEMI_H 1 + +static inline uint32_t softmmu_tget32(CPUArchState *env, target_ulong addr) +{ + uint32_t val; + + cpu_memory_rw_debug(ENV_GET_CPU(env), addr, (uint8_t *)&val, 4, 0); + return tswap32(val); +} +static inline uint32_t softmmu_tget8(CPUArchState *env, target_ulong addr) +{ + uint8_t val; + + cpu_memory_rw_debug(ENV_GET_CPU(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(CPUArchState *env, + target_ulong addr, uint32_t val) +{ + val = tswap32(val); + cpu_memory_rw_debug(ENV_GET_CPU(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(CPUArchState *env, + target_ulong addr, target_ulong len, int copy) +{ + uint8_t *p; + /* TODO: Make this something that isn't fixed size. */ + p = malloc(len); + if (p && copy) { + cpu_memory_rw_debug(ENV_GET_CPU(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(CPUArchState *env, target_ulong addr) +{ + char *p; + char *s; + uint8_t c; + /* TODO: Make this something that isn't fixed size. */ + s = p = malloc(1024); + if (!s) { + return NULL; + } + do { + cpu_memory_rw_debug(ENV_GET_CPU(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(CPUArchState *env, void *p, target_ulong addr, + target_ulong len) +{ + if (len) { + cpu_memory_rw_debug(ENV_GET_CPU(env), addr, p, len, 1); + } + free(p); +} +#define unlock_user(s, args, len) softmmu_unlock_user(env, s, args, len) + +#endif |