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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
57 lines
1.6 KiB
ArmAsm
57 lines
1.6 KiB
ArmAsm
// RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - | llvm-readobj -s -sr -sd | FileCheck %s
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f:
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.cfi_startproc
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nop
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.cfi_def_cfa_offset 8
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nop
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.cfi_def_cfa_register 6
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nop
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.cfi_rel_offset 6,16
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nop
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.cfi_def_cfa_offset 16
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nop
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.cfi_rel_offset 6,0
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.cfi_endproc
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// CHECK: Section {
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// CHECK: Index: 4
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// CHECK-NEXT: Name: .eh_frame
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// CHECK-NEXT: Type: SHT_PROGBITS
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// CHECK-NEXT: Flags [
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// CHECK-NEXT: SHF_ALLOC
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// CHECK-NEXT: ]
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// CHECK-NEXT: Address: 0x0
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// CHECK-NEXT: Offset: 0x48
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// CHECK-NEXT: Size: 64
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// CHECK-NEXT: Link: 0
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// CHECK-NEXT: Info: 0
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// CHECK-NEXT: AddressAlignment: 8
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// CHECK-NEXT: EntrySize: 0
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// CHECK-NEXT: Relocations [
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// CHECK-NEXT: ]
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// CHECK-NEXT: SectionData (
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// CHECK-NEXT: 0000: 14000000 00000000 017A5200 01781001
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// CHECK-NEXT: 0010: 1B0C0708 90010000 24000000 1C000000
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// CHECK-NEXT: 0020: 00000000 05000000 00410E08 410D0641
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// CHECK-NEXT: 0030: 11067F41 0E104186 02000000 00000000
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// CHECK-NEXT: )
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// CHECK-NEXT: }
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// CHECK-NEXT: Section {
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// CHECK-NEXT: Index: 5
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// CHECK-NEXT: Name: .rela.eh_frame
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// CHECK-NEXT: Type: SHT_RELA
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// CHECK-NEXT: Flags [
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// CHECK-NEXT: ]
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// CHECK-NEXT: Address: 0x0
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// CHECK-NEXT: Offset: 0x3A0
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// CHECK-NEXT: Size: 24
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// CHECK-NEXT: Link: 7
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// CHECK-NEXT: Info: 4
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// CHECK-NEXT: AddressAlignment: 8
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// CHECK-NEXT: EntrySize: 24
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// CHECK-NEXT: Relocations [
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// CHECK-NEXT: 0x20 R_X86_64_PC32 .text 0x0
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// CHECK-NEXT: ]
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// CHECK: }
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