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Implement post-MVP features and native stack overflow check (#243)

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Implement native thread stack overflow check
Implement post-MVP: Non-trapping float-to-int conversions
Implement post-MVP: Sign-extension operators
Enhance WASM loader checks
This commit is contained in:
wenyongh
2020-04-30 17:52:11 +08:00
committed by GitHub
parent ab4f0c5419
commit d381b0fdec
36 changed files with 1246 additions and 232 deletions
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36
core/iwasm/compilation/aot_emit_function.c
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@ -255,6 +255,39 @@ call_aot_invoke_native_func(AOTCompContext *comp_ctx, AOTFuncContext *func_ctx,
return true;
}
static bool
check_stack_boundary(AOTCompContext *comp_ctx, AOTFuncContext *func_ctx)
{
LLVMBasicBlockRef block_curr = LLVMGetInsertBlock(comp_ctx->builder);
LLVMBasicBlockRef check_stack;
LLVMValueRef cmp;
if (!(check_stack = LLVMAppendBasicBlockInContext(comp_ctx->context,
func_ctx->func,
"check_stack"))) {
aot_set_last_error("llvm add basic block failed.");
return false;
}
LLVMMoveBasicBlockAfter(check_stack, block_curr);
if (!(cmp = LLVMBuildICmp(comp_ctx->builder, LLVMIntULT,
func_ctx->last_alloca, func_ctx->native_stack_bound,
"cmp"))) {
aot_set_last_error("llvm build icmp failed.");
return false;
}
if (!aot_emit_exception(comp_ctx, func_ctx,
EXCE_NATIVE_STACK_OVERFLOW,
true, cmp, check_stack)) {
return false;
}
LLVMPositionBuilderAtEnd(comp_ctx->builder, check_stack);
return true;
}
bool
aot_compile_op_call(AOTCompContext *comp_ctx, AOTFuncContext *func_ctx,
uint32 func_idx, uint8 **p_frame_ip)
@ -347,6 +380,9 @@ aot_compile_op_call(AOTCompContext *comp_ctx, AOTFuncContext *func_ctx,
else {
func = func_ctxes[func_idx - import_func_count]->func;
if (!check_stack_boundary(comp_ctx, func_ctx))
goto fail;
/* Call the function */
if (!(value_ret = LLVMBuildCall(comp_ctx->builder, func,
param_values, (uint32)param_count + 1,