| // 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 TestARMOPEncode(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, rva); |
| 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; |
| } |
| |
| void TypedRVATest::TestARMOPEncode(courgette::ARM_RVA arm_rva, |
| courgette::RVA rva, |
| uint32 op, |
| courgette::RVA expected) const { |
| uint16 c_op; |
| uint32 addr; |
| EXPECT_TRUE(courgette::DisassemblerElf32ARM::Compress(arm_rva, op, rva, |
| &c_op, &addr)); |
| EXPECT_EQ(rva + addr, expected); |
| |
| uint32 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); |
| } |