diff options
| author | Stefan Gränitz <stefan.graenitz@gmail.com> | 2023-04-29 17:29:28 +0200 |
|---|---|---|
| committer | Stefan Gränitz <stefan.graenitz@gmail.com> | 2023-04-29 17:34:39 +0200 |
| commit | 64a2520bacb59dac43bb4fd19ff1788d785102de (patch) | |
| tree | e5532ee435bbdc3b225b488b94cedacaca07557b /lldb/test | |
| parent | d605af371e2ab69be032f7f4ee854baded688b5a (diff) | |
| download | llvm-64a2520bacb59dac43bb4fd19ff1788d785102de.tar.gz | |
[lldb][ObjectFileELF] Support AArch32 in ApplyRelocations
Allow the ObjectFileELF plugin to resolve R_ARM_ABS32 relocations from AArch32 object files. This fixes https://github.com/llvm/llvm-project/issues/61948
The existing architectures work with RELA-type relocation records that read addend from the relocation entry. REL-type relocations in AArch32 store addend in-place.
The new function doesn't re-use ELFRelocation::RelocAddend32(), because the interface doesn't match: in addition to the relocation entry we need the actual target section memory.
Reviewed By: labath
Differential Revision: https://reviews.llvm.org/D147642
Diffstat (limited to 'lldb/test')
| -rw-r--r-- | lldb/test/Shell/ObjectFile/ELF/aarch32-relocations.yaml | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/lldb/test/Shell/ObjectFile/ELF/aarch32-relocations.yaml b/lldb/test/Shell/ObjectFile/ELF/aarch32-relocations.yaml new file mode 100644 index 000000000000..1a12ba74e417 --- /dev/null +++ b/lldb/test/Shell/ObjectFile/ELF/aarch32-relocations.yaml @@ -0,0 +1,62 @@ +# RUN: yaml2obj %s -o %t +# RUN: lldb-test object-file -contents %t | FileCheck %s + +## Test that R_ARM_ABS32 relocations are resolved in .debug_info sections on aarch32. +## REL-type relocations store implicit addend as signed values inline. +## We relocate the symbol foo with 4 different addends and bar once in the .debug_info section. +## Results that exceed the 32-bit range or overflow are logged and ignored. + +# CHECK: Name: .debug_info +# CHECK: Data: ( +# +# Addends: Zero Positive Negative Overflow Out-of-range +# 00000000 04030201 D6FFFFFF D5FFFFFF FFFFFF7F +# CHECK-NEXT: 0000: 2A000000 2E030201 00000000 D5FFFFFF FFFFFF7F +# CHECK-NEXT: ) + +--- !ELF +FileHeader: + Class: ELFCLASS32 + Data: ELFDATA2LSB + Type: ET_REL + Machine: EM_ARM + Flags: [ EF_ARM_EABI_VER5 ] +Sections: + - Name: .text + Type: SHT_PROGBITS + Flags: [ SHF_ALLOC, SHF_EXECINSTR ] + - Name: .debug_info + Type: SHT_PROGBITS + Content: 0000000004030201D6FFFFFFD5FFFFFFFFFFFF7F + - Name: .rel.debug_info + Type: SHT_REL + Info: .debug_info + Relocations: + - Offset: 0x0 + Symbol: foo + Type: R_ARM_ABS32 + - Offset: 0x4 + Symbol: foo + Type: R_ARM_ABS32 + - Offset: 0x8 + Symbol: foo + Type: R_ARM_ABS32 + - Offset: 0xC + Symbol: foo + Type: R_ARM_ABS32 + - Offset: 0x10 + Symbol: bar + Type: R_ARM_ABS32 +Symbols: + - Name: .debug_info + Type: STT_SECTION + Section: .debug_info + - Name: foo + Type: STT_FUNC + Section: .debug_info + Value: 0x0000002A + - Name: bar + Type: STT_FUNC + Section: .debug_info + Value: 0xFF000000 +... |