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Liu Jia 2025-09-15 15:19:51 +08:00 committed by GitHub
parent b124f70345
commit 9530e4a310
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1 changed files with 12 additions and 2 deletions
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14
core/iwasm/compilation/aot_emit_memory.c
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@ -1486,7 +1486,7 @@ LLVMValueRef
check_bulk_memory_overflow(AOTCompContext *comp_ctx, AOTFuncContext *func_ctx,
LLVMValueRef offset, LLVMValueRef bytes)
{
LLVMValueRef maddr, max_addr, cmp, cmp1;
LLVMValueRef maddr, max_addr, cmp, cmp1, offset1;
LLVMValueRef mem_base_addr;
LLVMBasicBlockRef block_curr = LLVMGetInsertBlock(comp_ctx->builder);
LLVMBasicBlockRef check_succ;
@ -1539,8 +1539,18 @@ check_bulk_memory_overflow(AOTCompContext *comp_ctx, AOTFuncContext *func_ctx,
if (mem_data_size > 0 && mem_offset + mem_len <= mem_data_size) {
/* inside memory space */
/* maddr = mem_base_addr + moffset */
/* Perform zero extension in advance to avoid LLVMBuildInBoundsGEP2
* interpreting a negative address due to sign extension when
* mem_offset >= 2GiB */
if (comp_ctx->pointer_size == sizeof(uint64)) {
offset1 = I64_CONST(mem_offset);
}
else {
offset1 = I32_CONST((uint32)mem_offset);
}
CHECK_LLVM_CONST(offset1);
if (!(maddr = LLVMBuildInBoundsGEP2(comp_ctx->builder, INT8_TYPE,
mem_base_addr, &offset, 1,
mem_base_addr, &offset1, 1,
"maddr"))) {
aot_set_last_error("llvm build add failed.");
goto fail;