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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <stdint.h>
#include "courgette/base_test_unittest.h"
#include "courgette/disassembler_elf_32_arm.h"
#include "courgette/disassembler_elf_32_x86.h"
#include "courgette/image_utils.h"
class TypedRVATest : public BaseTest {
public:
void TestRelativeTargetX86(courgette::RVA word, courgette::RVA expected)
const;
void TestRelativeTargetARM(courgette::ARM_RVA arm_rva,
courgette::RVA rva,
uint32_t op,
courgette::RVA expected) const;
void TestARMOPEncode(courgette::ARM_RVA arm_rva,
courgette::RVA rva,
uint32_t op,
courgette::RVA expected) const;
};
void TypedRVATest::TestRelativeTargetX86(courgette::RVA word,
courgette::RVA expected) const {
courgette::DisassemblerElf32X86::TypedRVAX86* typed_rva
= new courgette::DisassemblerElf32X86::TypedRVAX86(0);
const uint8_t* op_pointer = reinterpret_cast<const uint8_t*>(&word);
EXPECT_TRUE(typed_rva->ComputeRelativeTarget(op_pointer));
EXPECT_EQ(typed_rva->relative_target(), expected);
delete typed_rva;
}
uint32_t Read32LittleEndian(const void* address) {
return *reinterpret_cast<const uint32_t*>(address);
}
void TypedRVATest::TestRelativeTargetARM(courgette::ARM_RVA arm_rva,
courgette::RVA rva,
uint32_t op,
courgette::RVA expected) const {
courgette::DisassemblerElf32ARM::TypedRVAARM* typed_rva
= new courgette::DisassemblerElf32ARM::TypedRVAARM(arm_rva, rva);
uint8_t* op_pointer = reinterpret_cast<uint8_t*>(&op);
EXPECT_TRUE(typed_rva->ComputeRelativeTarget(op_pointer));
EXPECT_EQ(rva + typed_rva->relative_target(), expected);
delete typed_rva;
}
void TypedRVATest::TestARMOPEncode(courgette::ARM_RVA arm_rva,
courgette::RVA rva,
uint32_t op,
courgette::RVA expected) const {
uint16_t c_op;
uint32_t addr;
EXPECT_TRUE(courgette::DisassemblerElf32ARM::Compress(arm_rva, op, rva,
&c_op, &addr));
EXPECT_EQ(rva + addr, expected);
uint32_t new_op;
EXPECT_TRUE(courgette::DisassemblerElf32ARM::Decompress(arm_rva, c_op, addr,
&new_op));
EXPECT_EQ(new_op, op);
}
TEST_F(TypedRVATest, TestX86) {
TestRelativeTargetX86(0x0, 0x4);
}
// ARM opcodes taken from and tested against the output of
// "arm-linux-gnueabi-objdump -d daisy_3701.98.0/bin/ls"
TEST_F(TypedRVATest, TestARM_OFF8_PREFETCH) {
TestRelativeTargetARM(courgette::ARM_OFF8, 0x0, 0x0, 0x4);
}
TEST_F(TypedRVATest, TestARM_OFF8_FORWARDS) {
TestRelativeTargetARM(courgette::ARM_OFF8, 0x2bcc, 0xd00e, 0x2bec);
TestRelativeTargetARM(courgette::ARM_OFF8, 0x3752, 0xd910, 0x3776);
}
TEST_F(TypedRVATest, TestARM_OFF8_BACKWARDS) {
TestRelativeTargetARM(courgette::ARM_OFF8, 0x3774, 0xd1f6, 0x3764);
}
TEST_F(TypedRVATest, TestARM_OFF11_PREFETCH) {
TestRelativeTargetARM(courgette::ARM_OFF11, 0x0, 0x0, 0x4);
}
TEST_F(TypedRVATest, TestARM_OFF11_FORWARDS) {
TestRelativeTargetARM(courgette::ARM_OFF11, 0x2bea, 0xe005, 0x2bf8);
}
TEST_F(TypedRVATest, TestARM_OFF11_BACKWARDS) {
TestRelativeTargetARM(courgette::ARM_OFF11, 0x2f80, 0xe6cd, 0x2d1e);
TestRelativeTargetARM(courgette::ARM_OFF11, 0x3610, 0xe56a, 0x30e8);
}
TEST_F(TypedRVATest, TestARM_OFF24_PREFETCH) {
TestRelativeTargetARM(courgette::ARM_OFF24, 0x0, 0x0, 0x8);
}
TEST_F(TypedRVATest, TestARM_OFF24_FORWARDS) {
TestRelativeTargetARM(courgette::ARM_OFF24, 0x2384, 0x4af3613a, 0xffcda874);
TestRelativeTargetARM(courgette::ARM_OFF24, 0x23bc, 0x6af961b9, 0xffe5aaa8);
TestRelativeTargetARM(courgette::ARM_OFF24, 0x23d4, 0x2b006823, 0x1c468);
}
TEST_F(TypedRVATest, TestARM_OFF24_BACKWARDS) {
// TODO(paulgazz): find a real-world example of an non-thumb ARM
// branch op that jumps backwards.
}
TEST_F(TypedRVATest, TestARM_OFF25_FORWARDS) {
TestRelativeTargetARM(courgette::ARM_OFF25, 0x2bf4, 0xfe06f008, 0xb804);
TestRelativeTargetARM(courgette::ARM_OFF25, 0x2c58, 0xfeacf005, 0x89b4);
}
TEST_F(TypedRVATest, TestARM_OFF25_BACKWARDS) {
TestRelativeTargetARM(courgette::ARM_OFF25, 0x2bd2, 0xeb9ef7ff, 0x2310);
TestRelativeTargetARM(courgette::ARM_OFF25, 0x2bd8, 0xeb8ef7ff, 0x22f8);
TestRelativeTargetARM(courgette::ARM_OFF25, 0x2c3e, 0xea2ef7ff, 0x209c);
}
TEST_F(TypedRVATest, TestARM_OFF21_FORWARDS) {
TestRelativeTargetARM(courgette::ARM_OFF21, 0x2bc6, 0x84c7f000, 0x3558);
TestRelativeTargetARM(courgette::ARM_OFF21, 0x2bde, 0x871df000, 0x3a1c);
TestRelativeTargetARM(courgette::ARM_OFF21, 0x2c5e, 0x86c1f2c0, 0x39e4);
}
TEST_F(TypedRVATest, TestARM_OFF21_BACKWARDS) {
TestRelativeTargetARM(courgette::ARM_OFF21, 0x67e4, 0xaee9f43f, 0x65ba);
TestRelativeTargetARM(courgette::ARM_OFF21, 0x67ee, 0xaee4f47f, 0x65ba);
}
TEST_F(TypedRVATest, TestARMOPEncode) {
TestARMOPEncode(courgette::ARM_OFF8, 0x2bcc, 0xd00e, 0x2bec);
TestARMOPEncode(courgette::ARM_OFF8, 0x3752, 0xd910, 0x3776);
TestARMOPEncode(courgette::ARM_OFF8, 0x3774, 0xd1f6, 0x3764);
TestARMOPEncode(courgette::ARM_OFF11, 0x0, 0x0, 0x4);
TestARMOPEncode(courgette::ARM_OFF11, 0x2bea, 0xe005, 0x2bf8);
TestARMOPEncode(courgette::ARM_OFF11, 0x2f80, 0xe6cd, 0x2d1e);
TestARMOPEncode(courgette::ARM_OFF11, 0x3610, 0xe56a, 0x30e8);
TestARMOPEncode(courgette::ARM_OFF24, 0x0, 0x0, 0x8);
TestARMOPEncode(courgette::ARM_OFF24, 0x2384, 0x4af3613a, 0xffcda874);
TestARMOPEncode(courgette::ARM_OFF24, 0x23bc, 0x6af961b9, 0xffe5aaa8);
TestARMOPEncode(courgette::ARM_OFF24, 0x23d4, 0x2b006823, 0x1c468);
TestARMOPEncode(courgette::ARM_OFF25, 0x2bf4, 0xf008fe06, 0xb804);
TestARMOPEncode(courgette::ARM_OFF25, 0x2c58, 0xf005feac, 0x89b4);
TestARMOPEncode(courgette::ARM_OFF25, 0x2bd2, 0xf7ffeb9e, 0x2310);
TestARMOPEncode(courgette::ARM_OFF25, 0x2bd8, 0xf7ffeb8e, 0x22f8);
TestARMOPEncode(courgette::ARM_OFF25, 0x2c3e, 0xf7ffea2e, 0x209c);
TestARMOPEncode(courgette::ARM_OFF21, 0x2bc6, 0xf00084c7, 0x3558);
TestARMOPEncode(courgette::ARM_OFF21, 0x2bde, 0xf000871d, 0x3a1c);
TestARMOPEncode(courgette::ARM_OFF21, 0x2c5e, 0xf2c086c1, 0x39e4);
TestARMOPEncode(courgette::ARM_OFF21, 0x67e4, 0xf43faee9, 0x65ba);
TestARMOPEncode(courgette::ARM_OFF21, 0x67ee, 0xf47faee4, 0x65ba);
}
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