Revision a68fe89c
| b/exec.c | ||
|---|---|---|
| 3106 | 3106 |
|
| 3107 | 3107 |
/* physical memory access (slow version, mainly for debug) */ |
| 3108 | 3108 |
#if defined(CONFIG_USER_ONLY) |
| 3109 |
void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf,
|
|
| 3110 |
int len, int is_write)
|
|
| 3109 |
int cpu_memory_rw_debug(CPUState *env, target_ulong addr,
|
|
| 3110 |
uint8_t *buf, int len, int is_write)
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|
| 3111 | 3111 |
{
|
| 3112 | 3112 |
int l, flags; |
| 3113 | 3113 |
target_ulong page; |
| ... | ... | |
| 3120 | 3120 |
l = len; |
| 3121 | 3121 |
flags = page_get_flags(page); |
| 3122 | 3122 |
if (!(flags & PAGE_VALID)) |
| 3123 |
return; |
|
| 3123 |
return -1;
|
|
| 3124 | 3124 |
if (is_write) {
|
| 3125 | 3125 |
if (!(flags & PAGE_WRITE)) |
| 3126 |
return; |
|
| 3126 |
return -1;
|
|
| 3127 | 3127 |
/* XXX: this code should not depend on lock_user */ |
| 3128 | 3128 |
if (!(p = lock_user(VERIFY_WRITE, addr, l, 0))) |
| 3129 |
/* FIXME - should this return an error rather than just fail? */ |
|
| 3130 |
return; |
|
| 3129 |
return -1; |
|
| 3131 | 3130 |
memcpy(p, buf, l); |
| 3132 | 3131 |
unlock_user(p, addr, l); |
| 3133 | 3132 |
} else {
|
| 3134 | 3133 |
if (!(flags & PAGE_READ)) |
| 3135 |
return; |
|
| 3134 |
return -1;
|
|
| 3136 | 3135 |
/* XXX: this code should not depend on lock_user */ |
| 3137 | 3136 |
if (!(p = lock_user(VERIFY_READ, addr, l, 1))) |
| 3138 |
/* FIXME - should this return an error rather than just fail? */ |
|
| 3139 |
return; |
|
| 3137 |
return -1; |
|
| 3140 | 3138 |
memcpy(buf, p, l); |
| 3141 | 3139 |
unlock_user(p, addr, 0); |
| 3142 | 3140 |
} |
| ... | ... | |
| 3144 | 3142 |
buf += l; |
| 3145 | 3143 |
addr += l; |
| 3146 | 3144 |
} |
| 3145 |
return 0; |
|
| 3147 | 3146 |
} |
| 3148 | 3147 |
|
| 3149 | 3148 |
#else |
| ... | ... | |
| 3641 | 3640 |
cpu_physical_memory_write(addr, (const uint8_t *)&val, 8); |
| 3642 | 3641 |
} |
| 3643 | 3642 |
|
| 3644 |
#endif |
|
| 3645 |
|
|
| 3646 | 3643 |
/* virtual memory access for debug (includes writing to ROM) */ |
| 3647 | 3644 |
int cpu_memory_rw_debug(CPUState *env, target_ulong addr, |
| 3648 | 3645 |
uint8_t *buf, int len, int is_write) |
| ... | ... | |
| 3661 | 3658 |
if (l > len) |
| 3662 | 3659 |
l = len; |
| 3663 | 3660 |
phys_addr += (addr & ~TARGET_PAGE_MASK); |
| 3664 |
#if !defined(CONFIG_USER_ONLY) |
|
| 3665 | 3661 |
if (is_write) |
| 3666 | 3662 |
cpu_physical_memory_write_rom(phys_addr, buf, l); |
| 3667 | 3663 |
else |
| 3668 |
#endif |
|
| 3669 | 3664 |
cpu_physical_memory_rw(phys_addr, buf, l, is_write); |
| 3670 | 3665 |
len -= l; |
| 3671 | 3666 |
buf += l; |
| ... | ... | |
| 3673 | 3668 |
} |
| 3674 | 3669 |
return 0; |
| 3675 | 3670 |
} |
| 3671 |
#endif |
|
| 3676 | 3672 |
|
| 3677 | 3673 |
/* in deterministic execution mode, instructions doing device I/Os |
| 3678 | 3674 |
must be at the end of the TB */ |
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