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https://github.com/c64scene-ar/llvm-6502.git
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7486d92a6c
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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182908 91177308-0d34-0410-b5e6-96231b3b80d8
66 lines
2.0 KiB
ArmAsm
66 lines
2.0 KiB
ArmAsm
// RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - | llvm-readobj -s -sr -t | FileCheck %s
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// When doing a rename, all the checks for where the relocation should go
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// should be performed with the original symbol. Only if we decide to relocate
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// with the symbol we should then use the renamed one.
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// This is a regression test for a bug where we used bar5@@@zed when deciding
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// if we should relocate with the symbol or with the section and we would then
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// not produce a relocation with .text.
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defined1:
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defined3:
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.symver defined3, bar5@@@zed
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.long defined3
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.global defined1
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// Section 1 is .text
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// CHECK: Section {
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// CHECK: Index: 1
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// CHECK-NEXT: Name: .text
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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: SHF_EXECINSTR
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// CHECK-NEXT: ]
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// CHECK-NEXT: Address: 0x0
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// CHECK-NEXT: Offset: 0x40
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// CHECK-NEXT: Size: 4
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// CHECK-NEXT: Link: 0
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// CHECK-NEXT: Info: 0
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// CHECK-NEXT: AddressAlignment: 4
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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: }
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// CHECK-NEXT: Section {
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// CHECK-NEXT: Index: 2
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// CHECK-NEXT: Name: .rela.text (1)
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// CHECK-NEXT: Type: SHT_RELA (0x4)
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// CHECK-NEXT: Flags [ (0x0)
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// CHECK-NEXT: ]
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// CHECK-NEXT: Address: 0x0
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// CHECK-NEXT: Offset: 0x320
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// CHECK-NEXT: Size: 24
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// CHECK-NEXT: Link: 6
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// CHECK-NEXT: Info: 1
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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: 0x0 R_X86_64_32 .text 0x0
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// CHECK-NEXT: ]
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// CHECK-NEXT: }
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// Symbol 2 is section 1
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// CHECK: Symbol {
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// CHECK: Name: .text (0)
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// CHECK-NEXT: Value: 0x0
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// CHECK-NEXT: Size: 0
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// CHECK-NEXT: Binding: Local
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// CHECK-NEXT: Type: Section
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// CHECK-NEXT: Other: 0
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// CHECK-NEXT: Section: .text (0x1)
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// CHECK-NEXT: }
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