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Use mmap() to allocate codeblock memory on x86-64 when not running on Windows.

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This commit is contained in:
SarahW 2018-12-19 22:25:47 +00:00
commit 1953f4afb9
1 changed files with 1 additions and 11 deletions
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12
src/codegen_backend_x86-64.c
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@ -286,7 +286,7 @@ void codegen_backend_init()
#if defined WIN32 || defined _WIN32 || defined _WIN32 #if defined WIN32 || defined _WIN32 || defined _WIN32
codeblock_data = VirtualAlloc(NULL, BLOCK_SIZE * BLOCK_DATA_SIZE, MEM_COMMIT, PAGE_EXECUTE_READWRITE); codeblock_data = VirtualAlloc(NULL, BLOCK_SIZE * BLOCK_DATA_SIZE, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
#else #else
codeblock_data = malloc(BLOCK_SIZE * BLOCK_DATA_SIZE); codeblock_data = mmap(0, BLOCK_SIZE * BLOCK_DATA_SIZE, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_ANON|MAP_PRIVATE, 0, 0);
#endif #endif
codeblock = malloc(BLOCK_SIZE * sizeof(codeblock_t)); codeblock = malloc(BLOCK_SIZE * sizeof(codeblock_t));
codeblock_hash = malloc(HASH_SIZE * sizeof(codeblock_t *)); codeblock_hash = malloc(HASH_SIZE * sizeof(codeblock_t *));
@ -299,16 +299,6 @@ void codegen_backend_init()
codeblock[c].data = &codeblock_data[c * BLOCK_DATA_SIZE]; codeblock[c].data = &codeblock_data[c * BLOCK_DATA_SIZE];
codeblock[c].pc = BLOCK_PC_INVALID; codeblock[c].pc = BLOCK_PC_INVALID;
} }
#if defined(__linux__) || defined(__APPLE__)
start = (void *)((long)codeblock & pagemask);
len = ((BLOCK_SIZE * sizeof(codeblock_t)) + pagesize) & pagemask;
if (mprotect(start, len, PROT_READ | PROT_WRITE | PROT_EXEC) != 0)
{
perror("mprotect");
exit(-1);
}
#endif
// pclog("Codegen is %p\n", (void *)pages[0xfab12 >> 12].block); // pclog("Codegen is %p\n", (void *)pages[0xfab12 >> 12].block);
block_current = 0; block_current = 0;