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simplify code by replacing mem_map_start()/mem_map_finish() in uc.c with mem_map()

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This commit is contained in:
Nguyen Anh Quynh 2015-11-28 18:26:08 +08:00
parent 4a759cebb5
commit f4882ae1a2
2 changed files with 7 additions and 22 deletions
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2
samples/sample_x86.c
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@ -250,7 +250,7 @@ static void test_i386_map_ptr(void)
}
// malloc 2MB memory for this emulation
mem = malloc(2 * 1024 * 1024);
mem = calloc(1, 2 * 1024 * 1024);
if (mem == NULL) {
printf("Failed to malloc()\n");
return;

27
uc.c
View File

@ -571,7 +571,7 @@ static uc_err _hook_mem_access(uc_engine *uc, uc_hook_type type,
}
// common setup/error checking shared between uc_mem_map and uc_mem_map_ptr
static uc_err mem_map_start(uc_engine *uc, uint64_t address, size_t size, uint32_t perms)
static uc_err mem_map(uc_engine *uc, uint64_t address, size_t size, uint32_t perms, MemoryRegion *block)
{
MemoryRegion **regions;
@ -591,6 +591,9 @@ static uc_err mem_map_start(uc_engine *uc, uint64_t address, size_t size, uint32
if ((perms & ~UC_PROT_ALL) != 0)
return UC_ERR_ARG;
if (block == NULL)
return UC_ERR_NOMEM;
if ((uc->mapped_block_count & (MEM_BLOCK_INCR - 1)) == 0) { //time to grow
regions = (MemoryRegion**)realloc(uc->mapped_blocks,
sizeof(MemoryRegion*) * (uc->mapped_block_count + MEM_BLOCK_INCR));
@ -600,16 +603,7 @@ static uc_err mem_map_start(uc_engine *uc, uint64_t address, size_t size, uint32
uc->mapped_blocks = regions;
}
return UC_ERR_OK;
}
// common final step shared by uc_mem_map and uc_mem_map_ptr
static uc_err mem_map_finish(uc_engine *uc, MemoryRegion *block)
{
uc->mapped_blocks[uc->mapped_block_count] = block;
if (uc->mapped_blocks[uc->mapped_block_count] == NULL)
return UC_ERR_NOMEM;
uc->mapped_block_count++;
return UC_ERR_OK;
@ -618,25 +612,16 @@ static uc_err mem_map_finish(uc_engine *uc, MemoryRegion *block)
UNICORN_EXPORT
uc_err uc_mem_map(uc_engine *uc, uint64_t address, size_t size, uint32_t perms)
{
uc_err err;
if ((err = mem_map_start(uc, address, size, perms)) != UC_ERR_OK)
return err;
return mem_map_finish(uc, uc->memory_map(uc, address, size, perms));
return mem_map(uc, address, size, perms, uc->memory_map(uc, address, size, perms));
}
UNICORN_EXPORT
uc_err uc_mem_map_ptr(uc_engine *uc, uint64_t address, size_t size, void *ptr)
{
uc_err err;
if (ptr == NULL)
return UC_ERR_ARG;
if ((err = mem_map_start(uc, address, size, UC_PROT_ALL)) != UC_ERR_OK)
return err;
return mem_map_finish(uc, uc->memory_map_ptr(uc, address, size, ptr));
return mem_map(uc, address, size, UC_PROT_ALL, uc->memory_map_ptr(uc, address, size, ptr));
}
// Create a backup copy of the indicated MemoryRegion.