mirror of
https://github.com/bytecodealliance/wasm-micro-runtime.git
synced 2025-02-08 16:05:07 +00:00
610 lines
22 KiB
C
610 lines
22 KiB
C
/*
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* Copyright (C) 2019 Intel Corporation. All rights reserved.
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* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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*/
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#include "aot_emit_function.h"
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#include "aot_emit_exception.h"
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#include "aot_emit_control.h"
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#include "../aot/aot_runtime.h"
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static bool
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create_func_return_block(AOTCompContext *comp_ctx, AOTFuncContext *func_ctx)
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{
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LLVMBasicBlockRef block_curr = LLVMGetInsertBlock(comp_ctx->builder);
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AOTFuncType *aot_func_type = func_ctx->aot_func->func_type;
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/* Create function return block if it isn't created */
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if (!func_ctx->func_return_block) {
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if (!(func_ctx->func_return_block =
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LLVMAppendBasicBlockInContext(comp_ctx->context,
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func_ctx->func, "func_ret"))) {
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aot_set_last_error("llvm add basic block failed.");
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return false;
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}
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/* Create return IR */
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LLVMPositionBuilderAtEnd(comp_ctx->builder, func_ctx->func_return_block);
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if (aot_func_type->result_count) {
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switch (aot_func_type->types[aot_func_type->param_count]) {
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case VALUE_TYPE_I32:
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LLVMBuildRet(comp_ctx->builder, I32_ZERO);
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break;
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case VALUE_TYPE_I64:
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LLVMBuildRet(comp_ctx->builder, I64_ZERO);
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break;
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case VALUE_TYPE_F32:
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LLVMBuildRet(comp_ctx->builder, F32_ZERO);
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break;
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case VALUE_TYPE_F64:
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LLVMBuildRet(comp_ctx->builder, F64_ZERO);
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break;
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}
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}
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else {
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LLVMBuildRetVoid(comp_ctx->builder);
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}
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}
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LLVMPositionBuilderAtEnd(comp_ctx->builder, block_curr);
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return true;
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}
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/* Check whether there was exception thrown, if yes, return directly */
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static bool
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check_exception_thrown(AOTCompContext *comp_ctx, AOTFuncContext *func_ctx)
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{
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LLVMBasicBlockRef block_curr, check_exce_succ;
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LLVMValueRef value, cmp;
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/* Create function return block if it isn't created */
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if (!create_func_return_block(comp_ctx, func_ctx))
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return false;
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/* Load the first byte of aot_module_inst->cur_exception, and check
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whether it is '\0'. If yes, no exception was thrown. */
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if (!(value = LLVMBuildLoad(comp_ctx->builder, func_ctx->cur_exception,
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"exce_value"))
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|| !(cmp = LLVMBuildICmp(comp_ctx->builder, LLVMIntEQ,
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value, I8_ZERO, "cmp"))) {
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aot_set_last_error("llvm build icmp failed.");
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return false;
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}
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/* Add check exection success block */
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if (!(check_exce_succ = LLVMAppendBasicBlockInContext(comp_ctx->context,
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func_ctx->func,
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"check_exce_succ"))) {
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aot_set_last_error("llvm add basic block failed.");
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return false;
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}
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block_curr = LLVMGetInsertBlock(comp_ctx->builder);
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LLVMMoveBasicBlockAfter(check_exce_succ, block_curr);
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LLVMPositionBuilderAtEnd(comp_ctx->builder, block_curr);
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/* Create condition br */
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if (!LLVMBuildCondBr(comp_ctx->builder, cmp,
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check_exce_succ, func_ctx->func_return_block)) {
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aot_set_last_error("llvm build cond br failed.");
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return false;
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}
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LLVMPositionBuilderAtEnd(comp_ctx->builder, check_exce_succ);
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return true;
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}
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/* Check whether there was exception thrown, if yes, return directly */
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static bool
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check_call_return(AOTCompContext *comp_ctx, AOTFuncContext *func_ctx,
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LLVMValueRef res)
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{
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LLVMBasicBlockRef block_curr, check_call_succ;
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LLVMValueRef cmp;
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/* Create function return block if it isn't created */
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if (!create_func_return_block(comp_ctx, func_ctx))
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return false;
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if (!(cmp = LLVMBuildICmp(comp_ctx->builder, LLVMIntNE,
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res, I8_ZERO, "cmp"))) {
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aot_set_last_error("llvm build icmp failed.");
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return false;
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}
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/* Add check exection success block */
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if (!(check_call_succ = LLVMAppendBasicBlockInContext(comp_ctx->context,
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func_ctx->func,
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"check_exce_succ"))) {
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aot_set_last_error("llvm add basic block failed.");
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return false;
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}
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block_curr = LLVMGetInsertBlock(comp_ctx->builder);
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LLVMMoveBasicBlockAfter(check_call_succ, block_curr);
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LLVMPositionBuilderAtEnd(comp_ctx->builder, block_curr);
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/* Create condition br */
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if (!LLVMBuildCondBr(comp_ctx->builder, cmp,
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check_call_succ, func_ctx->func_return_block)) {
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aot_set_last_error("llvm build cond br failed.");
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return false;
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}
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LLVMPositionBuilderAtEnd(comp_ctx->builder, check_call_succ);
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return true;
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}
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static bool
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call_aot_invoke_native_func(AOTCompContext *comp_ctx, AOTFuncContext *func_ctx,
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LLVMValueRef func_idx, AOTFuncType *aot_func_type,
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LLVMTypeRef *param_types, LLVMValueRef *param_values,
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uint32 param_count, uint32 param_cell_num,
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LLVMTypeRef ret_type, uint8 wasm_ret_type,
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LLVMValueRef *p_value_ret, LLVMValueRef *p_res)
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{
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LLVMTypeRef func_type, func_ptr_type, func_param_types[5];
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LLVMTypeRef ret_ptr_type, elem_ptr_type;
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LLVMValueRef func, elem_idx, elem_ptr;
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LLVMValueRef func_param_values[5], value_ret = NULL, value_ret_ptr, res;
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char buf[32], *func_name = "aot_invoke_native";
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uint32 i, cell_num = 0;
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/* prepare function type of aot_invoke_native */
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func_param_types[0] = comp_ctx->exec_env_type; /* exec_env */
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func_param_types[1] = I32_TYPE; /* func_idx */
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func_param_types[2] = INT32_PTR_TYPE; /* frame_lp */
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func_param_types[3] = I32_TYPE; /* argc */
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func_param_types[4] = INT32_PTR_TYPE; /* argv_ret */
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if (!(func_type = LLVMFunctionType(INT8_TYPE, func_param_types, 5, false))) {
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aot_set_last_error("llvm add function type failed.");
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return false;
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}
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/* prepare function pointer */
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if (comp_ctx->is_jit_mode) {
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if (!(func_ptr_type = LLVMPointerType(func_type, 0))) {
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aot_set_last_error("create LLVM function type failed.");
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return false;
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}
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/* JIT mode, call the function directly */
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if (!(func = I64_CONST((uint64)(uintptr_t)aot_invoke_native))
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|| !(func = LLVMConstIntToPtr(func, func_ptr_type))) {
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aot_set_last_error("create LLVM value failed.");
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return false;
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}
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}
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else {
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if (!(func = LLVMGetNamedFunction(comp_ctx->module, func_name))
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&& !(func = LLVMAddFunction(comp_ctx->module,
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func_name, func_type))) {
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aot_set_last_error("add LLVM function failed.");
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return false;
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}
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}
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if (param_count > 64) {
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aot_set_last_error("prepare native arguments failed: "
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"maximum 64 parameter cell number supported.");
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return false;
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}
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/* prepare frame_lp */
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for (i = 0; i < param_count; i++) {
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if (!(elem_idx = I32_CONST(cell_num))
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|| !(elem_ptr_type = LLVMPointerType(param_types[i], 0))) {
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aot_set_last_error("llvm add const or pointer type failed.");
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return false;
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}
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snprintf(buf, sizeof(buf), "%s%d", "elem", i);
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if (!(elem_ptr = LLVMBuildInBoundsGEP(comp_ctx->builder,
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func_ctx->argv_buf, &elem_idx, 1, buf))
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|| !(elem_ptr = LLVMBuildBitCast(comp_ctx->builder, elem_ptr,
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elem_ptr_type, buf))) {
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aot_set_last_error("llvm build bit cast failed.");
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return false;
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}
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if (!(res = LLVMBuildStore(comp_ctx->builder, param_values[i], elem_ptr))) {
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aot_set_last_error("llvm build store failed.");
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return false;
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}
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LLVMSetAlignment(res, 1);
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cell_num += wasm_value_type_cell_num(aot_func_type->types[i]);
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}
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if (wasm_ret_type != VALUE_TYPE_VOID) {
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if (!(ret_ptr_type = LLVMPointerType(ret_type, 0))) {
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aot_set_last_error("llvm add pointer type failed.");
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return false;
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}
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if (!(value_ret = LLVMBuildBitCast(comp_ctx->builder, func_ctx->argv_buf,
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ret_ptr_type, "argv_ret"))) {
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aot_set_last_error("llvm build bit cast failed.");
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return false;
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}
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/* convert to int32 pointer */
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if (!(value_ret_ptr = LLVMBuildBitCast(comp_ctx->builder, value_ret,
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INT32_PTR_TYPE, "argv_ret_ptr"))) {
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aot_set_last_error("llvm build store failed.");
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return false;
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}
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}
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else {
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value_ret_ptr = LLVMConstNull(INT32_PTR_TYPE);
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}
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func_param_values[0] = func_ctx->exec_env;
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func_param_values[1] = func_idx;
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func_param_values[2] = func_ctx->argv_buf;
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func_param_values[3] = I32_CONST(param_cell_num);
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func_param_values[4] = value_ret_ptr;
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if (!func_param_values[3]) {
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aot_set_last_error("llvm create const failed.");
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return false;
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}
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/* call aot_invoke_native() function */
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if (!(res = LLVMBuildCall(comp_ctx->builder, func,
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func_param_values, 5, "res"))) {
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aot_set_last_error("llvm build call failed.");
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return false;
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}
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if (wasm_ret_type != VALUE_TYPE_VOID)
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/* get function return value */
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*p_value_ret = LLVMBuildLoad(comp_ctx->builder, value_ret, "value_ret");
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*p_res = res;
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return true;
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}
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bool
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aot_compile_op_call(AOTCompContext *comp_ctx, AOTFuncContext *func_ctx,
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uint32 func_idx, uint8 **p_frame_ip)
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{
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uint32 import_func_count = comp_ctx->comp_data->import_func_count;
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AOTImportFunc *import_funcs = comp_ctx->comp_data->import_funcs;
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uint32 func_count = comp_ctx->func_ctx_count, param_cell_num = 0;
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AOTFuncContext **func_ctxes = comp_ctx->func_ctxes;
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AOTFuncType *func_type;
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LLVMTypeRef *param_types = NULL, ret_type;
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LLVMValueRef *param_values = NULL, value_ret = NULL, func;
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LLVMValueRef import_func_idx, res;
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int32 i, j = 0, param_count;
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uint64 total_size;
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uint8 wasm_ret_type;
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bool ret = false;
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/* Check function index */
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if (func_idx >= import_func_count + func_count) {
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aot_set_last_error("Function index out of range.");
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return false;
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}
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/* Get function type */
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if (func_idx < import_func_count)
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func_type = import_funcs[func_idx].func_type;
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else
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func_type = func_ctxes[func_idx - import_func_count]->
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aot_func->func_type;
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/* Get param cell number */
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param_cell_num = wasm_type_param_cell_num(func_type);
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/* Allocate memory for parameters */
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param_count = (int32)func_type->param_count;
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total_size = sizeof(LLVMValueRef) * (uint64)(param_count + 1);
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if (total_size >= UINT32_MAX
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|| !(param_values = wasm_runtime_malloc((uint32)total_size))) {
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aot_set_last_error("Allocate memory failed.");
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return false;
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}
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/* First parameter is exec env */
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param_values[j++] = func_ctx->exec_env;
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/* Pop parameters from stack */
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for (i = param_count - 1; i >= 0; i--)
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POP(param_values[i + j], func_type->types[i]);
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if (func_idx < import_func_count) {
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if (!(import_func_idx = I32_CONST(func_idx))) {
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aot_set_last_error("llvm build inbounds gep failed.");
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goto fail;
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}
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/* Initialize parameter types of the LLVM function */
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total_size = sizeof(LLVMTypeRef) * (uint64)(param_count + 1);
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if (total_size >= UINT32_MAX
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|| !(param_types = wasm_runtime_malloc((uint32)total_size))) {
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aot_set_last_error("Allocate memory failed.");
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goto fail;
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}
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j = 0;
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param_types[j++] = comp_ctx->exec_env_type;
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for (i = 0; i < param_count; i++)
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param_types[j++] = TO_LLVM_TYPE(func_type->types[i]);
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if (func_type->result_count) {
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wasm_ret_type = func_type->types[func_type->param_count];
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ret_type = TO_LLVM_TYPE(wasm_ret_type);
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}
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else {
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wasm_ret_type = VALUE_TYPE_VOID;
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ret_type = VOID_TYPE;
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}
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/* call aot_invoke_native() */
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if (!call_aot_invoke_native_func(comp_ctx, func_ctx, import_func_idx, func_type,
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param_types + 1, param_values + 1,
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param_count, param_cell_num,
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ret_type, wasm_ret_type, &value_ret, &res))
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goto fail;
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/* Check whether there was exception thrown when executing the function */
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if (!check_call_return(comp_ctx, func_ctx, res))
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goto fail;
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}
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else {
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func = func_ctxes[func_idx - import_func_count]->func;
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/* Call the function */
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if (!(value_ret = LLVMBuildCall(comp_ctx->builder, func,
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param_values, (uint32)param_count + 1,
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(func_type->result_count > 0
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? "call" : "")))) {
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aot_set_last_error("LLVM build call failed.");
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goto fail;
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}
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/* Set calling convention for the call with the func's calling convention */
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LLVMSetInstructionCallConv(value_ret, LLVMGetFunctionCallConv(func));
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/* Check whether there was exception thrown when executing the function */
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if (!check_exception_thrown(comp_ctx, func_ctx))
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goto fail;
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}
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if (func_type->result_count > 0)
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PUSH(value_ret, func_type->types[func_type->param_count]);
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ret = true;
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fail:
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if (param_types)
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wasm_runtime_free(param_types);
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if (param_values)
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wasm_runtime_free(param_values);
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return ret;
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}
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static bool
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call_aot_call_indirect_func(AOTCompContext *comp_ctx, AOTFuncContext *func_ctx,
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AOTFuncType *aot_func_type,
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LLVMValueRef func_type_idx, LLVMValueRef table_elem_idx,
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LLVMTypeRef *param_types, LLVMValueRef *param_values,
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uint32 param_count, uint32 param_cell_num,
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LLVMTypeRef ret_type, uint8 wasm_ret_type,
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LLVMValueRef *p_value_ret, LLVMValueRef *p_res)
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{
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LLVMTypeRef func_type, func_ptr_type, func_param_types[6];
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LLVMTypeRef ret_ptr_type, elem_ptr_type;
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LLVMValueRef func, elem_idx, elem_ptr;
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LLVMValueRef func_param_values[6], value_ret = NULL, value_ret_ptr, res = NULL;
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char buf[32], *func_name = "aot_call_indirect";
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uint32 i, cell_num = 0;
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/* prepare function type of aot_call_indirect */
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func_param_types[0] = comp_ctx->exec_env_type; /* exec_env */
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func_param_types[1] = I32_TYPE; /* func_type_idx */
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func_param_types[2] = I32_TYPE; /* table_elem_idx */
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func_param_types[3] = INT32_PTR_TYPE; /* frame_lp */
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func_param_types[4] = I32_TYPE; /* argc */
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func_param_types[5] = INT32_PTR_TYPE; /* argv_ret */
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if (!(func_type = LLVMFunctionType(INT8_TYPE, func_param_types, 6, false))) {
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aot_set_last_error("llvm add function type failed.");
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return false;
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}
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/* prepare function pointer */
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if (comp_ctx->is_jit_mode) {
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if (!(func_ptr_type = LLVMPointerType(func_type, 0))) {
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aot_set_last_error("create LLVM function type failed.");
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return false;
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}
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/* JIT mode, call the function directly */
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if (!(func = I64_CONST((uint64)(uintptr_t)aot_call_indirect))
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|| !(func = LLVMConstIntToPtr(func, func_ptr_type))) {
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aot_set_last_error("create LLVM value failed.");
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return false;
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}
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}
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else {
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if (!(func = LLVMGetNamedFunction(comp_ctx->module, func_name))
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&& !(func = LLVMAddFunction(comp_ctx->module,
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func_name, func_type))) {
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aot_set_last_error("add LLVM function failed.");
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return false;
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}
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}
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if (param_count > 64) {
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aot_set_last_error("prepare native arguments failed: "
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"maximum 64 parameter cell number supported.");
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return false;
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}
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/* prepare frame_lp */
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for (i = 0; i < param_count; i++) {
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if (!(elem_idx = I32_CONST(cell_num))
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|| !(elem_ptr_type = LLVMPointerType(param_types[i], 0))) {
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aot_set_last_error("llvm add const or pointer type failed.");
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return false;
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}
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snprintf(buf, sizeof(buf), "%s%d", "elem", i);
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if (!(elem_ptr = LLVMBuildInBoundsGEP(comp_ctx->builder,
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func_ctx->argv_buf, &elem_idx, 1, buf))
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|| !(elem_ptr = LLVMBuildBitCast(comp_ctx->builder, elem_ptr,
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elem_ptr_type, buf))) {
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aot_set_last_error("llvm build bit cast failed.");
|
|
return false;
|
|
}
|
|
|
|
if (!(res = LLVMBuildStore(comp_ctx->builder, param_values[i], elem_ptr))) {
|
|
aot_set_last_error("llvm build store failed.");
|
|
return false;
|
|
}
|
|
LLVMSetAlignment(res, 1);
|
|
|
|
cell_num += wasm_value_type_cell_num(aot_func_type->types[i]);
|
|
}
|
|
|
|
if (wasm_ret_type != VALUE_TYPE_VOID) {
|
|
if (!(ret_ptr_type = LLVMPointerType(ret_type, 0))) {
|
|
aot_set_last_error("llvm add pointer type failed.");
|
|
return false;
|
|
}
|
|
|
|
if (!(value_ret = LLVMBuildBitCast(comp_ctx->builder, func_ctx->argv_buf,
|
|
ret_ptr_type, "argv_ret"))) {
|
|
aot_set_last_error("llvm build bit cast failed.");
|
|
return false;
|
|
}
|
|
|
|
/* convert to int32 pointer */
|
|
if (!(value_ret_ptr = LLVMBuildBitCast(comp_ctx->builder, value_ret,
|
|
INT32_PTR_TYPE, "argv_ret_ptr"))) {
|
|
aot_set_last_error("llvm build store failed.");
|
|
return false;
|
|
}
|
|
}
|
|
else {
|
|
value_ret_ptr = LLVMConstNull(INT32_PTR_TYPE);
|
|
}
|
|
|
|
func_param_values[0] = func_ctx->exec_env;
|
|
func_param_values[1] = func_type_idx;
|
|
func_param_values[2] = table_elem_idx;
|
|
func_param_values[3] = func_ctx->argv_buf;
|
|
func_param_values[4] = I32_CONST(param_cell_num);
|
|
func_param_values[5] = value_ret_ptr;
|
|
|
|
if (!func_param_values[4]) {
|
|
aot_set_last_error("llvm create const failed.");
|
|
return false;
|
|
}
|
|
|
|
/* call aot_call_indirect() function */
|
|
if (!(res = LLVMBuildCall(comp_ctx->builder, func,
|
|
func_param_values, 6, "res"))) {
|
|
aot_set_last_error("llvm build call failed.");
|
|
return false;
|
|
}
|
|
|
|
if (wasm_ret_type != VALUE_TYPE_VOID)
|
|
/* get function return value */
|
|
*p_value_ret = LLVMBuildLoad(comp_ctx->builder, value_ret, "value_ret");
|
|
|
|
*p_res = res;
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
aot_compile_op_call_indirect(AOTCompContext *comp_ctx, AOTFuncContext *func_ctx,
|
|
uint32 type_idx)
|
|
{
|
|
AOTFuncType *func_type;
|
|
LLVMValueRef elem_idx, ftype_idx;
|
|
LLVMValueRef *param_values = NULL, value_ret = NULL, res = NULL;
|
|
LLVMTypeRef *param_types = NULL, ret_type;
|
|
int32 i, param_count;
|
|
uint32 param_cell_num;
|
|
uint64 total_size;
|
|
uint8 wasm_ret_type;
|
|
bool ret;
|
|
|
|
/* Check function type index */
|
|
if (type_idx >= comp_ctx->comp_data->func_type_count) {
|
|
aot_set_last_error("type index is overflow");
|
|
return false;
|
|
}
|
|
|
|
ftype_idx = I32_CONST(type_idx);
|
|
CHECK_LLVM_CONST(ftype_idx);
|
|
|
|
func_type = comp_ctx->comp_data->func_types[type_idx];
|
|
|
|
param_cell_num = wasm_type_param_cell_num(func_type);
|
|
|
|
POP_I32(elem_idx);
|
|
|
|
/* Initialize parameter types of the LLVM function */
|
|
param_count = (int32)func_type->param_count;
|
|
total_size = sizeof(LLVMTypeRef) * (uint64)param_count;
|
|
if (total_size >= UINT32_MAX
|
|
|| !(param_types = wasm_runtime_malloc((uint32)total_size))) {
|
|
aot_set_last_error("Allocate memory failed.");
|
|
goto fail;
|
|
}
|
|
|
|
for (i = 0; i < param_count; i++)
|
|
param_types[i] = TO_LLVM_TYPE(func_type->types[i]);
|
|
|
|
/* Resolve return type of the LLVM function */
|
|
if (func_type->result_count) {
|
|
wasm_ret_type = func_type->types[func_type->param_count];
|
|
ret_type = TO_LLVM_TYPE(wasm_ret_type);
|
|
}
|
|
else {
|
|
wasm_ret_type = VALUE_TYPE_VOID;
|
|
ret_type = VOID_TYPE;
|
|
}
|
|
|
|
/* Allocate memory for parameters */
|
|
total_size = sizeof(LLVMValueRef) * (uint64)param_count;
|
|
if (total_size >= UINT32_MAX
|
|
|| !(param_values = wasm_runtime_malloc((uint32)total_size))) {
|
|
aot_set_last_error("Allocate memory failed.");
|
|
goto fail;
|
|
}
|
|
|
|
/* Pop parameters from stack */
|
|
for (i = param_count - 1; i >= 0; i--)
|
|
POP(param_values[i], func_type->types[i]);
|
|
|
|
if (!call_aot_call_indirect_func(comp_ctx, func_ctx,
|
|
func_type, ftype_idx, elem_idx,
|
|
param_types, param_values,
|
|
param_count, param_cell_num,
|
|
ret_type, wasm_ret_type,
|
|
&value_ret, &res))
|
|
goto fail;
|
|
|
|
if (func_type->result_count > 0)
|
|
PUSH(value_ret, func_type->types[func_type->param_count]);
|
|
|
|
/* Check whether there was exception thrown when executing the function */
|
|
if (!check_call_return(comp_ctx, func_ctx, res))
|
|
goto fail;
|
|
|
|
ret = true;
|
|
|
|
fail:
|
|
if (param_values)
|
|
wasm_runtime_free(param_values);
|
|
if (param_types)
|
|
wasm_runtime_free(param_types);
|
|
return ret;
|
|
}
|
|
|