Revision c8a706fe exec.c
| b/exec.c | ||
|---|---|---|
| 234 | 234 |
FILE *f; |
| 235 | 235 |
int n; |
| 236 | 236 |
|
| 237 |
mmap_lock(); |
|
| 237 | 238 |
last_brk = (unsigned long)sbrk(0); |
| 238 | 239 |
f = fopen("/proc/self/maps", "r");
|
| 239 | 240 |
if (f) {
|
| ... | ... | |
| 251 | 252 |
} while (!feof(f)); |
| 252 | 253 |
fclose(f); |
| 253 | 254 |
} |
| 255 |
mmap_unlock(); |
|
| 254 | 256 |
} |
| 255 | 257 |
#endif |
| 256 | 258 |
} |
| ... | ... | |
| 326 | 328 |
static void tlb_protect_code(ram_addr_t ram_addr); |
| 327 | 329 |
static void tlb_unprotect_code_phys(CPUState *env, ram_addr_t ram_addr, |
| 328 | 330 |
target_ulong vaddr); |
| 331 |
#define mmap_lock() do { } while(0)
|
|
| 332 |
#define mmap_unlock() do { } while(0)
|
|
| 329 | 333 |
#endif |
| 330 | 334 |
|
| 331 | 335 |
#define DEFAULT_CODE_GEN_BUFFER_SIZE (32 * 1024 * 1024) |
| ... | ... | |
| 1049 | 1053 |
unsigned int h; |
| 1050 | 1054 |
TranslationBlock **ptb; |
| 1051 | 1055 |
|
| 1056 |
/* Grab the mmap lock to stop another thread invalidating this TB |
|
| 1057 |
before we are done. */ |
|
| 1058 |
mmap_lock(); |
|
| 1052 | 1059 |
/* add in the physical hash table */ |
| 1053 | 1060 |
h = tb_phys_hash_func(phys_pc); |
| 1054 | 1061 |
ptb = &tb_phys_hash[h]; |
| ... | ... | |
| 1075 | 1082 |
#ifdef DEBUG_TB_CHECK |
| 1076 | 1083 |
tb_page_check(); |
| 1077 | 1084 |
#endif |
| 1085 |
mmap_unlock(); |
|
| 1078 | 1086 |
} |
| 1079 | 1087 |
|
| 1080 | 1088 |
/* find the TB 'tb' such that tb[0].tc_ptr <= tc_ptr < |
| ... | ... | |
| 2002 | 2010 |
PageDesc *p; |
| 2003 | 2011 |
target_ulong addr; |
| 2004 | 2012 |
|
| 2013 |
/* mmap_lock should already be held. */ |
|
| 2005 | 2014 |
start = start & TARGET_PAGE_MASK; |
| 2006 | 2015 |
end = TARGET_PAGE_ALIGN(end); |
| 2007 | 2016 |
if (flags & PAGE_WRITE) |
| ... | ... | |
| 2065 | 2074 |
PageDesc *p, *p1; |
| 2066 | 2075 |
target_ulong host_start, host_end, addr; |
| 2067 | 2076 |
|
| 2077 |
/* Technically this isn't safe inside a signal handler. However we |
|
| 2078 |
know this only ever happens in a synchronous SEGV handler, so in |
|
| 2079 |
practice it seems to be ok. */ |
|
| 2080 |
mmap_lock(); |
|
| 2081 |
|
|
| 2068 | 2082 |
host_start = address & qemu_host_page_mask; |
| 2069 | 2083 |
page_index = host_start >> TARGET_PAGE_BITS; |
| 2070 | 2084 |
p1 = page_find(page_index); |
| 2071 |
if (!p1) |
|
| 2085 |
if (!p1) {
|
|
| 2086 |
mmap_unlock(); |
|
| 2072 | 2087 |
return 0; |
| 2088 |
} |
|
| 2073 | 2089 |
host_end = host_start + qemu_host_page_size; |
| 2074 | 2090 |
p = p1; |
| 2075 | 2091 |
prot = 0; |
| ... | ... | |
| 2091 | 2107 |
#ifdef DEBUG_TB_CHECK |
| 2092 | 2108 |
tb_invalidate_check(address); |
| 2093 | 2109 |
#endif |
| 2110 |
mmap_unlock(); |
|
| 2094 | 2111 |
return 1; |
| 2095 | 2112 |
} |
| 2096 | 2113 |
} |
| 2114 |
mmap_unlock(); |
|
| 2097 | 2115 |
return 0; |
| 2098 | 2116 |
} |
| 2099 | 2117 |
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