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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
53 lines
2.0 KiB
ArmAsm
53 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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// Test that we produce the correct relocation.
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bar:
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movl $bar, %edx # R_X86_64_32
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movq $bar, %rdx # R_X86_64_32S
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movq $bar, bar(%rip) # R_X86_64_32S
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movl bar, %edx # R_X86_64_32S
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movq bar, %rdx # R_X86_64_32S
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.long bar # R_X86_64_32
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leaq foo@GOTTPOFF(%rip), %rax # R_X86_64_GOTTPOFF
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leaq foo@TLSGD(%rip), %rax # R_X86_64_TLSGD
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leaq foo@TPOFF(%rax), %rax # R_X86_64_TPOFF32
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leaq foo@TLSLD(%rip), %rdi # R_X86_64_TLSLD
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leaq foo@dtpoff(%rax), %rcx # R_X86_64_DTPOFF32
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pushq $bar
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movq foo(%rip), %rdx
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leaq foo-bar(%r14),%r14
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addq $bar,%rax # R_X86_64_32S
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// CHECK: Section {
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// CHECK: Name: .rela.text
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// CHECK: Relocations [
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// CHECK-NEXT: 0x1 R_X86_64_32 .text
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// CHECK-NEXT: 0x8 R_X86_64_32S .text
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// CHECK-NEXT: 0x13 R_X86_64_32S .text
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// CHECK-NEXT: 0x1A R_X86_64_32S .text
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// CHECK-NEXT: 0x22 R_X86_64_32S .text
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// CHECK-NEXT: 0x26 R_X86_64_32 .text
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// CHECK-NEXT: 0x2D R_X86_64_GOTTPOFF foo 0xFFFFFFFFFFFFFFFC
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// CHECK-NEXT: 0x34 R_X86_64_TLSGD foo 0xFFFFFFFFFFFFFFFC
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// CHECK-NEXT: 0x3B R_X86_64_TPOFF32 foo 0x0
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// CHECK-NEXT: 0x42 R_X86_64_TLSLD foo 0xFFFFFFFFFFFFFFFC
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// CHECK-NEXT: 0x49 R_X86_64_DTPOFF32 foo 0x0
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// CHECK-NEXT: 0x4E R_X86_64_32S .text 0x0
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// CHECK-NEXT: 0x55 R_X86_64_PC32 foo 0xFFFFFFFFFFFFFFFC
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// CHECK-NEXT: 0x5C R_X86_64_PC32 foo 0x5C
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// CHECK-NEXT: 0x63 R_X86_64_32S .text 0x0
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// CHECK-NEXT: ]
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// CHECK-NEXT: }
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// CHECK: Symbol {
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// CHECK: Name: .text (0)
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// CHECK-NEXT: Value:
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// CHECK-NEXT: Size:
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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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