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5b34d5a3c7
For COFF and MachO, sections semantically have relocations that apply to them. That is not the case on ELF. In relocatable objects (.o), a section with relocations in ELF has offsets to another section where the relocations should be applied. In dynamic objects and executables, relocations don't have an offset, they have a virtual address. The section sh_info may or may not point to another section, but that is not actually used for resolving the relocations. This patch exposes that in the ObjectFile API. It has the following advantages: * Most (all?) clients can handle this more efficiently. They will normally walk all relocations, so doing an effort to iterate in a particular order doesn't save time. * llvm-readobj now prints relocations in the same way the native readelf does. * probably most important, relocations that don't point to any section are now visible. This is the case of relocations in the rela.dyn section. See the updated relocation-executable.test for example. llvm-svn: 182908
174 lines
6.1 KiB
Plaintext
174 lines
6.1 KiB
Plaintext
RUN: llvm-readobj -r %p/Inputs/trivial.obj.coff-i386 \
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RUN: | FileCheck %s -check-prefix COFF
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RUN: llvm-readobj -r %p/Inputs/trivial.obj.elf-i386 \
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RUN: | FileCheck %s -check-prefix ELF
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RUN: llvm-readobj -r %p/Inputs/trivial.obj.macho-i386 \
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RUN: | FileCheck %s -check-prefix MACHO-I386
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RUN: llvm-readobj -r %p/Inputs/trivial.obj.macho-x86-64 \
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RUN: | FileCheck %s -check-prefix MACHO-X86-64
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RUN: llvm-readobj -r %p/Inputs/trivial.obj.macho-ppc \
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RUN: | FileCheck %s -check-prefix MACHO-PPC
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RUN: llvm-readobj -r %p/Inputs/trivial.obj.macho-ppc64 \
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RUN: | FileCheck %s -check-prefix MACHO-PPC64
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RUN: llvm-readobj -r -expand-relocs %p/Inputs/trivial.obj.macho-arm \
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RUN: | FileCheck %s -check-prefix MACHO-ARM
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COFF: Relocations [
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COFF-NEXT: Section (1) .text {
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COFF-NEXT: 0x4 IMAGE_REL_I386_DIR32 .data
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COFF-NEXT: 0x9 IMAGE_REL_I386_REL32 _puts
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COFF-NEXT: 0xE IMAGE_REL_I386_REL32 _SomeOtherFunction
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COFF-NEXT: }
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COFF-NEXT: ]
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ELF: Relocations [
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ELF-NEXT: Section (2) .rel.text {
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ELF-NEXT: 0xC R_386_GOTPC _GLOBAL_OFFSET_TABLE_ 0x0
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ELF-NEXT: 0x12 R_386_GOTOFF .L.str 0x0
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ELF-NEXT: 0x1A R_386_PLT32 puts 0x0
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ELF-NEXT: 0x1F R_386_PLT32 SomeOtherFunction 0x0
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ELF-NEXT: }
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ELF-NEXT: ]
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MACHO-I386: Relocations [
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MACHO-I386-NEXT: Section __text {
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MACHO-I386-NEXT: 0x18 1 2 1 GENERIC_RELOC_VANILLA 0 _SomeOtherFunction
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MACHO-I386-NEXT: 0x13 1 2 1 GENERIC_RELOC_VANILLA 0 _puts
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MACHO-I386-NEXT: 0xB 0 2 n/a GENERIC_RELOC_LOCAL_SECTDIFF 1 -
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MACHO-I386-NEXT: 0x0 0 2 n/a GENERIC_RELOC_PAIR 1 -
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MACHO-I386-NEXT: }
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MACHO-I386-NEXT: ]
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MACHO-X86-64: Relocations [
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MACHO-X86-64-NEXT: Section __text {
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MACHO-X86-64-NEXT: 0xE 1 2 1 X86_64_RELOC_BRANCH 0 _SomeOtherFunction
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MACHO-X86-64-NEXT: 0x9 1 2 1 X86_64_RELOC_BRANCH 0 _puts
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MACHO-X86-64-NEXT: 0x4 1 2 1 X86_64_RELOC_SIGNED 0 L_.str
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MACHO-X86-64-NEXT: }
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MACHO-X86-64-NEXT:]
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MACHO-PPC: Relocations [
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MACHO-PPC-NEXT: Section __text {
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MACHO-PPC-NEXT: 0x24 0 2 n/a PPC_RELOC_LO16_SECTDIFF 1 -
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MACHO-PPC-NEXT: 0x0 0 2 n/a PPC_RELOC_PAIR 1 -
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MACHO-PPC-NEXT: 0x1C 0 2 n/a PPC_RELOC_HA16_SECTDIFF 1 -
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MACHO-PPC-NEXT: 0x58 0 2 n/a PPC_RELOC_PAIR 1 -
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MACHO-PPC-NEXT: 0x18 1 2 0 PPC_RELOC_BR24 0 -
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MACHO-PPC-NEXT: }
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MACHO-PPC-NEXT: Section __picsymbolstub1 {
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MACHO-PPC-NEXT: 0x14 0 2 n/a PPC_RELOC_LO16_SECTDIFF 1 -
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MACHO-PPC-NEXT: 0x0 0 2 n/a PPC_RELOC_PAIR 1 -
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MACHO-PPC-NEXT: 0xC 0 2 n/a PPC_RELOC_HA16_SECTDIFF 1 -
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MACHO-PPC-NEXT: 0x20 0 2 n/a PPC_RELOC_PAIR 1 -
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MACHO-PPC-NEXT: }
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MACHO-PPC-NEXT: Section __la_symbol_ptr {
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MACHO-PPC-NEXT: 0x0 0 2 1 PPC_RELOC_VANILLA 0 dyld_stub_binding_helper
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MACHO-PPC-NEXT: }
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MACHO-PPC-NEXT: ]
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MACHO-PPC64: Relocations [
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MACHO-PPC64-NEXT: Section __text {
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MACHO-PPC64-NEXT: 0x24 0 2 n/a 1 -
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MACHO-PPC64-NEXT: 0x0 0 2 n/a 1 -
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MACHO-PPC64-NEXT: 0x1C 0 2 n/a 1 -
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MACHO-PPC64-NEXT: 0x58 0 2 n/a 1 -
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MACHO-PPC64-NEXT: 0x18 1 2 0 0 -
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MACHO-PPC64-NEXT: }
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MACHO-PPC64-NEXT: Section __picsymbolstub1 {
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MACHO-PPC64-NEXT: 0x14 0 2 n/a 1 -
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MACHO-PPC64-NEXT: 0x0 0 2 n/a 1 -
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MACHO-PPC64-NEXT: 0xC 0 2 n/a 1 -
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MACHO-PPC64-NEXT: 0x24 0 2 n/a 1 -
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MACHO-PPC64-NEXT: }
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MACHO-PPC64-NEXT: Section __la_symbol_ptr {
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MACHO-PPC64-NEXT: 0x0 0 3 1 0 dyld_stub_binding_helper
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MACHO-PPC64-NEXT: }
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MACHO-PPC64-NEXT: ]
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MACHO-ARM: Relocations [
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MACHO-ARM-NEXT: Section __text {
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MACHO-ARM-NEXT: Relocation {
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MACHO-ARM-NEXT: Offset: 0x38
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MACHO-ARM-NEXT: PCRel: 0
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MACHO-ARM-NEXT: Length: 2
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MACHO-ARM-NEXT: Extern: N/A
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MACHO-ARM-NEXT: Type: ARM_RELOC_SECTDIFF (2)
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MACHO-ARM-NEXT: Symbol: -
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MACHO-ARM-NEXT: Scattered: 1
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MACHO-ARM-NEXT: }
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MACHO-ARM-NEXT: Relocation {
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MACHO-ARM-NEXT: Offset: 0x0
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MACHO-ARM-NEXT: PCRel: 0
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MACHO-ARM-NEXT: Length: 2
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MACHO-ARM-NEXT: Extern: N/A
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MACHO-ARM-NEXT: Type: ARM_RELOC_PAIR (1)
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MACHO-ARM-NEXT: Symbol: -
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MACHO-ARM-NEXT: Scattered: 1
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MACHO-ARM-NEXT: }
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MACHO-ARM-NEXT: Relocation {
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MACHO-ARM-NEXT: Offset: 0x20
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MACHO-ARM-NEXT: PCRel: 1
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MACHO-ARM-NEXT: Length: 2
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MACHO-ARM-NEXT: Extern: 1
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MACHO-ARM-NEXT: Type: ARM_RELOC_BR24 (5)
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MACHO-ARM-NEXT: Symbol: _g
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MACHO-ARM-NEXT: Scattered: 0
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MACHO-ARM-NEXT: }
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MACHO-ARM-NEXT: Relocation {
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MACHO-ARM-NEXT: Offset: 0x1C
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MACHO-ARM-NEXT: PCRel: 0
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MACHO-ARM-NEXT: Length: 1
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MACHO-ARM-NEXT: Extern: 1
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MACHO-ARM-NEXT: Type: ARM_RELOC_HALF (8)
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MACHO-ARM-NEXT: Symbol: _g
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MACHO-ARM-NEXT: Scattered: 0
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MACHO-ARM-NEXT: }
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MACHO-ARM-NEXT: Relocation {
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MACHO-ARM-NEXT: Offset: 0x0
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MACHO-ARM-NEXT: PCRel: 0
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MACHO-ARM-NEXT: Length: 1
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MACHO-ARM-NEXT: Extern: 0
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MACHO-ARM-NEXT: Type: ARM_RELOC_PAIR (1)
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MACHO-ARM-NEXT: Symbol: -
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MACHO-ARM-NEXT: Scattered: 0
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MACHO-ARM-NEXT: }
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MACHO-ARM-NEXT: Relocation {
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MACHO-ARM-NEXT: Offset: 0x18
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MACHO-ARM-NEXT: PCRel: 0
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MACHO-ARM-NEXT: Length: 0
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MACHO-ARM-NEXT: Extern: 1
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MACHO-ARM-NEXT: Type: ARM_RELOC_HALF (8)
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MACHO-ARM-NEXT: Symbol: _g
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MACHO-ARM-NEXT: Scattered: 0
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MACHO-ARM-NEXT: }
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MACHO-ARM-NEXT: Relocation {
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MACHO-ARM-NEXT: Offset: 0x0
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MACHO-ARM-NEXT: PCRel: 0
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MACHO-ARM-NEXT: Length: 0
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MACHO-ARM-NEXT: Extern: 0
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MACHO-ARM-NEXT: Type: ARM_RELOC_PAIR (1)
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MACHO-ARM-NEXT: Symbol: -
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MACHO-ARM-NEXT: Scattered: 0
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MACHO-ARM-NEXT: }
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MACHO-ARM-NEXT: Relocation {
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MACHO-ARM-NEXT: Offset: 0xC
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MACHO-ARM-NEXT: PCRel: 0
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MACHO-ARM-NEXT: Length: 2
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MACHO-ARM-NEXT: Extern: N/A
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MACHO-ARM-NEXT: Type: ARM_RELOC_SECTDIFF (2)
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MACHO-ARM-NEXT: Symbol: -
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MACHO-ARM-NEXT: Scattered: 1
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MACHO-ARM-NEXT: }
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MACHO-ARM-NEXT: Relocation {
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MACHO-ARM-NEXT: Offset: 0x0
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MACHO-ARM-NEXT: PCRel: 0
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MACHO-ARM-NEXT: Length: 2
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MACHO-ARM-NEXT: Extern: N/A
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MACHO-ARM-NEXT: Type: ARM_RELOC_PAIR (1)
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MACHO-ARM-NEXT: Symbol: -
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MACHO-ARM-NEXT: Scattered: 1
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MACHO-ARM-NEXT: }
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MACHO-ARM-NEXT: }
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MACHO-ARM-NEXT: ]
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