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Tests for jump / call relocation.

This commit is contained in:
Christian Speckner 2024-07-15 22:27:14 +02:00
parent 1e964828b4
commit d68850d466
1 changed files with 97 additions and 0 deletions
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97
src/emucore/elf/LinkerTest.cxx
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@ -687,4 +687,101 @@ TEST(ElfLinker, RodataSectionsGoToRodata) {
EXPECT_EQ(segmentRead32(linker, SegmentType::rodata, 0x14), static_cast<uInt32>(0x12345679));
}
TEST(ElfLinker, R_ARM_THM_CALL_PatchesOffset) {
ElfFixture fixture(1000);
ElfLinker linker(0x00100000, 0x00200000, 0x00300000, fixture);
fixture
.addSection(".text.1", ElfFile::SHT_PROGBITS, 0, 0x10)
.addSection(".text.2", ElfFile::SHT_PROGBITS, 0x10, 0x20)
.addSymbol("foo", 0x04, 2)
.addRelocation(1, 0, 0x08, ElfFile::R_ARM_THM_CALL)
.write32(0x08, 0xf800f000);
linker.link({});
EXPECT_EQ(segmentRead32(linker, SegmentType::text, 0x08), 0xf804f000);
}
TEST(ElfLinker, R_ARM_THM_CALL_AddsAddendToTarget) {
ElfFixture fixture(1000);
ElfLinker linker(0x00100000, 0x00200000, 0x00300000, fixture);
fixture
.addSection(".text.1", ElfFile::SHT_PROGBITS, 0, 0x10)
.addSection(".text.2", ElfFile::SHT_PROGBITS, 0x10, 0x20)
.addSymbol("foo", 0x04, 2)
.addRelocation(1, 0, 0x08, ElfFile::R_ARM_THM_CALL, -2)
.write32(0x08, 0xf800f000);
linker.link({});
EXPECT_EQ(segmentRead32(linker, SegmentType::text, 0x08), 0xf803f000);
}
TEST(ElfLinker, R_ARM_THM_CALL_UsesExistingValueAsAddend) {
ElfFixture fixture(1000);
ElfLinker linker(0x00100000, 0x00200000, 0x00300000, fixture);
fixture
.addSection(".text.1", ElfFile::SHT_PROGBITS, 0, 0x10)
.addSection(".text.2", ElfFile::SHT_PROGBITS, 0x10, 0x20)
.addSymbol("foo", 0x04, 2)
.addRelocation(1, 0, 0x08, ElfFile::R_ARM_THM_CALL)
.write32(0x08, 0xfffff7ff);
linker.link({});
EXPECT_EQ(segmentRead32(linker, SegmentType::text, 0x08), 0xf803f000);
}
TEST(ElfLinker, R_ARM_THM_JUMP24L_PatchesOffset) {
ElfFixture fixture(1000);
ElfLinker linker(0x00100000, 0x00200000, 0x00300000, fixture);
fixture
.addSection(".text.1", ElfFile::SHT_PROGBITS, 0, 0x10)
.addSection(".text.2", ElfFile::SHT_PROGBITS, 0x10, 0x20)
.addSymbol("foo", 0x04, 2)
.addRelocation(1, 0, 0x08, ElfFile::R_ARM_THM_JUMP24)
.write32(0x08, 0xb800f000);
linker.link({});
EXPECT_EQ(segmentRead32(linker, SegmentType::text, 0x08), 0xb804f000);
}
TEST(ElfLinker, R_ARM_THM_JUMP24_AddsAddendToTarget) {
ElfFixture fixture(1000);
ElfLinker linker(0x00100000, 0x00200000, 0x00300000, fixture);
fixture
.addSection(".text.1", ElfFile::SHT_PROGBITS, 0, 0x10)
.addSection(".text.2", ElfFile::SHT_PROGBITS, 0x10, 0x20)
.addSymbol("foo", 0x04, 2)
.addRelocation(1, 0, 0x08, ElfFile::R_ARM_THM_JUMP24, -2)
.write32(0x08, 0xb800f000);
linker.link({});
EXPECT_EQ(segmentRead32(linker, SegmentType::text, 0x08), 0xb803f000);
}
TEST(ElfLinker, R_ARM_THM_JUMP24_UsesExistingValueAsAddend) {
ElfFixture fixture(1000);
ElfLinker linker(0x00100000, 0x00200000, 0x00300000, fixture);
fixture
.addSection(".text.1", ElfFile::SHT_PROGBITS, 0, 0x10)
.addSection(".text.2", ElfFile::SHT_PROGBITS, 0x10, 0x20)
.addSymbol("foo", 0x04, 2)
.addRelocation(1, 0, 0x08, ElfFile::R_ARM_THM_JUMP24)
.write32(0x08, 0xbffff7ff);
linker.link({});
EXPECT_EQ(segmentRead32(linker, SegmentType::text, 0x08), 0xb803f000);
}
}