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[lldb] Implement LLDB_REGNUM_GENERIC_TP conversion for Aarch64 (#208643)

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LLDB currently fails to find TLS variables on Linux, and this is part of
the problem.
This commit is contained in:
Felipe de Azevedo Piovezan 2026-07-10 10:35:14 +01:00 committed by GitHub
parent 83c5973a0a
commit 9a92a2be8d
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2 changed files with 18 additions and 0 deletions
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1
lldb/source/Plugins/ABI/AArch64/ABIAArch64.cpp
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@ -88,6 +88,7 @@ uint32_t ABIAArch64::GetGenericNum(llvm::StringRef name) {
.Cases({"sp", "x31"}, LLDB_REGNUM_GENERIC_SP)
.Cases({"fp", "x29"}, LLDB_REGNUM_GENERIC_FP)
.Case("cpsr", LLDB_REGNUM_GENERIC_FLAGS)
.Case("tpidr", LLDB_REGNUM_GENERIC_TP)
.Case("x0", LLDB_REGNUM_GENERIC_ARG1)
.Case("x1", LLDB_REGNUM_GENERIC_ARG2)
.Case("x2", LLDB_REGNUM_GENERIC_ARG3)

17
lldb/unittests/ABI/AArch64/ABIAArch64Test.cpp
View file

@ -66,6 +66,23 @@ TEST_P(ABIAArch64TestFixture, AugmentRegisterInfo) {
EXPECT_EQ(new_pc.regnum_dwarf, arm64_dwarf::pc);
}
TEST_P(ABIAArch64TestFixture, AugmentRegisterInfoThreadPointer) {
ABISP abi_sp = ABI::FindPlugin(ProcessSP(), ArchSpec(GetParam()));
ASSERT_TRUE(abi_sp);
using Register = DynamicRegisterInfo::Register;
Register tpidr;
tpidr.name = ConstString("tpidr");
tpidr.set_name = ConstString("GPR");
std::vector<Register> regs{tpidr};
abi_sp->AugmentRegisterInfo(regs);
ASSERT_EQ(regs.size(), 1U);
EXPECT_EQ(regs[0].regnum_generic,
static_cast<uint32_t>(LLDB_REGNUM_GENERIC_TP));
}
INSTANTIATE_TEST_SUITE_P(ABIAArch64Tests, ABIAArch64TestFixture,
testing::Values("aarch64-pc-linux",
"arm64-apple-macosx"));