1 files changed, 141 insertions, 0 deletions
diff --git a/fluent-bit/lib/wasm-micro-runtime-WAMR-1.2.2/core/iwasm/compilation/aot_emit_exception.c b/fluent-bit/lib/wasm-micro-runtime-WAMR-1.2.2/core/iwasm/compilation/aot_emit_exception.c
new file mode 100644
index 000000000..d40ccc6a4
--- /dev/null
+++ b/fluent-bit/lib/wasm-micro-runtime-WAMR-1.2.2/core/iwasm/compilation/aot_emit_exception.c
@@ -0,0 +1,141 @@
+/*
+ * Copyright (C) 2019 Intel Corporation. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+ */
+
+#include "aot_emit_exception.h"
+#include "../interpreter/wasm_runtime.h"
+#include "../aot/aot_runtime.h"
+
+bool
+aot_emit_exception(AOTCompContext *comp_ctx, AOTFuncContext *func_ctx,
+                   int32 exception_id, bool is_cond_br, LLVMValueRef cond_br_if,
+                   LLVMBasicBlockRef cond_br_else_block)
+{
+    LLVMBasicBlockRef block_curr = LLVMGetInsertBlock(comp_ctx->builder);
+    LLVMValueRef exce_id = I32_CONST((uint32)exception_id), func_const, func;
+    LLVMTypeRef param_types[2], ret_type, func_type, func_ptr_type;
+    LLVMValueRef param_values[2];
+
+    bh_assert(exception_id >= 0 && exception_id < EXCE_NUM);
+
+    CHECK_LLVM_CONST(exce_id);
+
+    /* Create got_exception block if needed */
+    if (!func_ctx->got_exception_block) {
+        if (!(func_ctx->got_exception_block = LLVMAppendBasicBlockInContext(
+                  comp_ctx->context, func_ctx->func, "got_exception"))) {
+            aot_set_last_error("add LLVM basic block failed.");
+            return false;
+        }
+
+        LLVMPositionBuilderAtEnd(comp_ctx->builder,
+                                 func_ctx->got_exception_block);
+
+        /* Create exection id phi */
+        if (!(func_ctx->exception_id_phi = LLVMBuildPhi(
+                  comp_ctx->builder, I32_TYPE, "exception_id_phi"))) {
+            aot_set_last_error("llvm build phi failed.");
+            return false;
+        }
+
+        /* Call aot_set_exception_with_id() to throw exception */
+        param_types[0] = INT8_PTR_TYPE;
+        param_types[1] = I32_TYPE;
+        ret_type = VOID_TYPE;
+
+        /* Create function type */
+        if (!(func_type = LLVMFunctionType(ret_type, param_types, 2, false))) {
+            aot_set_last_error("create LLVM function type failed.");
+            return false;
+        }
+
+        if (comp_ctx->is_jit_mode) {
+            /* Create function type */
+            if (!(func_ptr_type = LLVMPointerType(func_type, 0))) {
+                aot_set_last_error("create LLVM function type failed.");
+                return false;
+            }
+            /* Create LLVM function with const function pointer */
+            if (!(func_const =
+                      I64_CONST((uint64)(uintptr_t)jit_set_exception_with_id))
+                || !(func = LLVMConstIntToPtr(func_const, func_ptr_type))) {
+                aot_set_last_error("create LLVM value failed.");
+                return false;
+            }
+        }
+        else if (comp_ctx->is_indirect_mode) {
+            int32 func_index;
+            if (!(func_ptr_type = LLVMPointerType(func_type, 0))) {
+                aot_set_last_error("create LLVM function type failed.");
+                return false;
+            }
+
+            func_index = aot_get_native_symbol_index(
+                comp_ctx, "aot_set_exception_with_id");
+            if (func_index < 0) {
+                return false;
+            }
+            if (!(func =
+                      aot_get_func_from_table(comp_ctx, func_ctx->native_symbol,
+                                              func_ptr_type, func_index))) {
+                return false;
+            }
+        }
+        else {
+            /* Create LLVM function with external function pointer */
+            if (!(func = LLVMGetNamedFunction(func_ctx->module,
+                                              "aot_set_exception_with_id"))
+                && !(func = LLVMAddFunction(func_ctx->module,
+                                            "aot_set_exception_with_id",
+                                            func_type))) {
+                aot_set_last_error("add LLVM function failed.");
+                return false;
+            }
+        }
+
+        /* Call the aot_set_exception_with_id() function */
+        param_values[0] = func_ctx->aot_inst;
+        param_values[1] = func_ctx->exception_id_phi;
+        if (!LLVMBuildCall2(comp_ctx->builder, func_type, func, param_values, 2,
+                            "")) {
+            aot_set_last_error("llvm build call failed.");
+            return false;
+        }
+
+        /* Create return IR */
+        AOTFuncType *aot_func_type = func_ctx->aot_func->func_type;
+        if (!aot_build_zero_function_ret(comp_ctx, func_ctx, aot_func_type)) {
+            return false;
+        }
+
+        /* Resume the builder position */
+        LLVMPositionBuilderAtEnd(comp_ctx->builder, block_curr);
+    }
+
+    /* Add phi incoming value to got_exception block */
+    LLVMAddIncoming(func_ctx->exception_id_phi, &exce_id, &block_curr, 1);
+
+    if (!is_cond_br) {
+        /* not condition br, create br IR */
+        if (!LLVMBuildBr(comp_ctx->builder, func_ctx->got_exception_block)) {
+            aot_set_last_error("llvm build br failed.");
+            return false;
+        }
+    }
+    else {
+        /* Create condition br */
+        if (!LLVMBuildCondBr(comp_ctx->builder, cond_br_if,
+                             func_ctx->got_exception_block,
+                             cond_br_else_block)) {
+            aot_set_last_error("llvm build cond br failed.");
+            return false;
+        }
+        /* Start to translate the else block */
+        LLVMPositionBuilderAtEnd(comp_ctx->builder, cond_br_else_block);
+    }
+
+    return true;
+fail:
+    return false;
+}