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end address of mapping memory is not inclusive, and can wrap around to 0. fix issue #299

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Nguyen Anh Quynh 2015-12-12 01:37:13 +08:00
parent 0e62ebc038
commit 3c72809373
1 changed files with 5 additions and 1 deletions
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6
uc.c
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@ -588,6 +588,10 @@ uc_err uc_mem_map(uc_engine *uc, uint64_t address, size_t size, uint32_t perms)
// invalid memory mapping
return UC_ERR_ARG;
// address cannot wrapp around
if (address + size - 1 < address)
return UC_ERR_ARG;
// address must be aligned to uc->target_page_size
if ((address & uc->target_page_align) != 0)
return UC_ERR_ARG;
@ -845,7 +849,7 @@ MemoryRegion *memory_mapping(struct uc_struct* uc, uint64_t address)
return uc->mapped_blocks[i];
for(i = 0; i < uc->mapped_block_count; i++) {
if (address >= uc->mapped_blocks[i]->addr && address < uc->mapped_blocks[i]->end) {
if (address >= uc->mapped_blocks[i]->addr && address <= uc->mapped_blocks[i]->end - 1) {
// cache this index for the next query
uc->mapped_block_cache_index = i;
return uc->mapped_blocks[i];