Merge branch 'upstream-merge'
[qemu-kvm.git] / softmmu-semi.h
blobbcb979a5b037d847f2639949b94a02068b9e425a
1 /*
2 * Helper routines to provide target memory access for semihosting
3 * syscalls in system emulation mode.
5 * Copyright (c) 2007 CodeSourcery.
7 * This code is licensed under the GPL
8 */
10 static inline uint32_t softmmu_tget32(CPUArchState *env, uint32_t addr)
12 uint32_t val;
14 cpu_memory_rw_debug(env, addr, (uint8_t *)&val, 4, 0);
15 return tswap32(val);
17 static inline uint32_t softmmu_tget8(CPUArchState *env, uint32_t addr)
19 uint8_t val;
21 cpu_memory_rw_debug(env, addr, &val, 1, 0);
22 return val;
25 #define get_user_u32(arg, p) ({ arg = softmmu_tget32(env, p) ; 0; })
26 #define get_user_u8(arg, p) ({ arg = softmmu_tget8(env, p) ; 0; })
27 #define get_user_ual(arg, p) get_user_u32(arg, p)
29 static inline void softmmu_tput32(CPUArchState *env, uint32_t addr, uint32_t val)
31 val = tswap32(val);
32 cpu_memory_rw_debug(env, addr, (uint8_t *)&val, 4, 1);
34 #define put_user_u32(arg, p) ({ softmmu_tput32(env, p, arg) ; 0; })
35 #define put_user_ual(arg, p) put_user_u32(arg, p)
37 static void *softmmu_lock_user(CPUArchState *env, uint32_t addr, uint32_t len,
38 int copy)
40 uint8_t *p;
41 /* TODO: Make this something that isn't fixed size. */
42 p = malloc(len);
43 if (p && copy)
44 cpu_memory_rw_debug(env, addr, p, len, 0);
45 return p;
47 #define lock_user(type, p, len, copy) softmmu_lock_user(env, p, len, copy)
48 static char *softmmu_lock_user_string(CPUArchState *env, uint32_t addr)
50 char *p;
51 char *s;
52 uint8_t c;
53 /* TODO: Make this something that isn't fixed size. */
54 s = p = malloc(1024);
55 if (!s) {
56 return NULL;
58 do {
59 cpu_memory_rw_debug(env, addr, &c, 1, 0);
60 addr++;
61 *(p++) = c;
62 } while (c);
63 return s;
65 #define lock_user_string(p) softmmu_lock_user_string(env, p)
66 static void softmmu_unlock_user(CPUArchState *env, void *p, target_ulong addr,
67 target_ulong len)
69 if (len)
70 cpu_memory_rw_debug(env, addr, p, len, 1);
71 free(p);
73 #define unlock_user(s, args, len) softmmu_unlock_user(env, s, args, len)