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9eed3f671f
Given bar = foo + 4 .long bar MC would eat the 4. GNU as includes it in the relocation. The rule seems to be that a variable that defines a symbol is used in the relocation and one that does not define a symbol is evaluated and the result included in the relocation. Fixing this unfortunately required some other changes: * Since the variable is now evaluated, it would prevent the ELF writer from noticing the weakref marker the elf streamer uses. This patch then replaces that with a VariantKind in MCSymbolRefExpr. * Using VariantKind then requires us to look past other VariantKind to see .weakref bar,foo call bar@PLT doing this also fixes zed = foo +2 call zed@PLT so that is a good thing. * Looking past VariantKind means that the relocation selection has to use the fixup instead of the target. This is a reboot of the previous fixes for MC. I will watch the sanitizer buildbot and wait for a build before adding back the previous fixes. llvm-svn: 204294
68 lines
2.6 KiB
ArmAsm
68 lines
2.6 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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movabs foo@GOT, %rax # R_X86_64_GOT64
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movabs foo@GOTOFF, %rax # R_X86_64_GOTOFF64
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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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.quad foo@DTPOFF
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movabsq $baz@TPOFF, %rax
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.word foo-bar
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.byte foo-bar
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zed = foo +2
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call zed@PLT
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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: 0x4F R_X86_64_GOT64 foo 0x0
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// CHECK-NEXT: 0x59 R_X86_64_GOTOFF64 foo 0x0
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// CHECK-NEXT: 0x62 R_X86_64_32S .text 0x0
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// CHECK-NEXT: 0x69 R_X86_64_PC32 foo 0xFFFFFFFFFFFFFFFC
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// CHECK-NEXT: 0x70 R_X86_64_PC32 foo 0x70
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// CHECK-NEXT: 0x77 R_X86_64_32S .text 0x0
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// CHECK-NEXT: 0x7B R_X86_64_DTPOFF64 foo 0x0
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// CHECK-NEXT: 0x85 R_X86_64_TPOFF64 baz 0x0
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// CHECK-NEXT: 0x8D R_X86_64_PC16 foo 0x8D
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// CHECK-NEXT: 0x8F R_X86_64_PC8 foo 0x8F
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// CHECK-NEXT: 0x91 R_X86_64_PLT32 foo 0xFFFFFFFFFFFFFFFE
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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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