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//===- llvm/unittest/Object/Disassembler.cpp ------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm-c/Disassembler.h"
#include "llvm/Support/TargetSelect.h"
#include "gtest/gtest.h"
using namespace llvm;
static const char *symbolLookupCallback(void *DisInfo, uint64_t ReferenceValue,
uint64_t *ReferenceType,
uint64_t ReferencePC,
const char **ReferenceName) {
*ReferenceType = LLVMDisassembler_ReferenceType_InOut_None;
return nullptr;
}
TEST(Disassembler, X86Test) {
llvm::InitializeAllTargetInfos();
llvm::InitializeAllTargetMCs();
llvm::InitializeAllDisassemblers();
uint8_t Bytes[] = {0x90, 0x90, 0xeb, 0xfd};
uint8_t *BytesP = Bytes;
const char OutStringSize = 100;
char OutString[OutStringSize];
LLVMDisasmContextRef DCR = LLVMCreateDisasm("x86_64-pc-linux", nullptr, 0,
nullptr, symbolLookupCallback);
if (!DCR)
return;
size_t InstSize;
unsigned NumBytes = sizeof(Bytes);
unsigned PC = 0;
InstSize =
LLVMDisasmInstruction(DCR, BytesP, 0, PC, OutString, OutStringSize);
EXPECT_EQ(InstSize, 0U);
InstSize = LLVMDisasmInstruction(DCR, BytesP, NumBytes, PC, OutString,
OutStringSize);
EXPECT_EQ(InstSize, 1U);
EXPECT_EQ(StringRef(OutString), "\tnop");
PC += InstSize;
BytesP += InstSize;
NumBytes -= InstSize;
InstSize = LLVMDisasmInstruction(DCR, BytesP, NumBytes, PC, OutString,
OutStringSize);
EXPECT_EQ(InstSize, 1U);
EXPECT_EQ(StringRef(OutString), "\tnop");
PC += InstSize;
BytesP += InstSize;
NumBytes -= InstSize;
InstSize = LLVMDisasmInstruction(DCR, BytesP, NumBytes, PC, OutString,
OutStringSize);
EXPECT_EQ(InstSize, 2U);
EXPECT_EQ(StringRef(OutString), "\tjmp\t0x1");
LLVMDisasmDispose(DCR);
}
TEST(Disassembler, WebAssemblyTest) {
llvm::InitializeAllTargetInfos();
llvm::InitializeAllTargetMCs();
llvm::InitializeAllDisassemblers();
uint8_t Bytes[] = {0x6a, 0x42, 0x7F, 0x35, 0x01, 0x10};
uint8_t *BytesP = Bytes;
const char OutStringSize = 100;
char OutString[OutStringSize];
LLVMDisasmContextRef DCR = LLVMCreateDisasm("wasm32-unknown-unknown", nullptr,
0, nullptr, symbolLookupCallback);
if (!DCR)
return;
size_t InstSize;
unsigned NumBytes = sizeof(Bytes);
unsigned PC = 0;
InstSize = LLVMDisasmInstruction(DCR, BytesP, NumBytes, PC, OutString,
OutStringSize);
EXPECT_EQ(InstSize, 1U);
EXPECT_EQ(StringRef(OutString), "\ti32.add ");
PC += InstSize;
BytesP += InstSize;
NumBytes -= InstSize;
InstSize = LLVMDisasmInstruction(DCR, BytesP, NumBytes, PC, OutString,
OutStringSize);
EXPECT_EQ(InstSize, 2U);
EXPECT_EQ(StringRef(OutString), "\ti64.const\t-1");
PC += InstSize;
BytesP += InstSize;
NumBytes -= InstSize;
InstSize = LLVMDisasmInstruction(DCR, BytesP, NumBytes, PC, OutString,
OutStringSize);
EXPECT_EQ(InstSize, 3U);
EXPECT_EQ(StringRef(OutString), "\ti64.load32_u\t16:p2align=1");
LLVMDisasmDispose(DCR);
}
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