| // 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 "courgette/base_test_unittest.h" |
| #include "courgette/disassembler_elf_32_arm.h" |
| #include "courgette/disassembler_elf_32_x86.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 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* op_pointer = reinterpret_cast<const uint8*>(&word); |
| |
| EXPECT_TRUE(typed_rva->ComputeRelativeTarget(op_pointer)); |
| EXPECT_EQ(typed_rva->relative_target(), expected); |
| |
| delete typed_rva; |
| } |
| |
| uint32 Read32LittleEndian(const void* address) { |
| return *reinterpret_cast<const uint32*>(address); |
| } |
| |
| void TypedRVATest::TestRelativeTargetARM(courgette::ARM_RVA arm_rva, |
| courgette::RVA rva, |
| uint32 op, |
| courgette::RVA expected) const { |
| courgette::DisassemblerElf32ARM::TypedRVAARM* typed_rva |
| = new courgette::DisassemblerElf32ARM::TypedRVAARM(arm_rva, 0); |
| uint8* op_pointer = reinterpret_cast<uint8*>(&op); |
| |
| EXPECT_TRUE(typed_rva->ComputeRelativeTarget(op_pointer)); |
| EXPECT_EQ(rva + typed_rva->relative_target(), expected); |
| |
| delete typed_rva; |
| } |
| |
| 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 ARM branch op |
| // that jumps backwards. |
| } |