[MC] support TLSDESC and TLSCALL / GNU2 tls dialect
Differential Revision: http://reviews.llvm.org/D18885 llvm-svn: 265881
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@ -154,6 +154,10 @@ static unsigned getRelocType64(MCContext &Ctx, SMLoc Loc,
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case RT64_8:
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llvm_unreachable("Unimplemented");
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}
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case MCSymbolRefExpr::VK_TLSCALL:
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return ELF::R_X86_64_TLSDESC_CALL;
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case MCSymbolRefExpr::VK_TLSDESC:
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return ELF::R_X86_64_GOTPC32_TLSDESC;
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case MCSymbolRefExpr::VK_TLSGD:
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checkIs32(Ctx, Loc, Type);
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return ELF::R_X86_64_TLSGD;
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@ -0,0 +1,26 @@
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// RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - | llvm-readobj -s -sr | FileCheck %s
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// Test that we produce the correct relocation.
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leaq _ZL3ccc@TLSDESC(%rip), %rax
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call *_ZL3ccc@TLSCALL(%rax)
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addq %fs:0, %rax
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// CHECK: Section {
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// CHECK: Index:
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// CHECK: Name: .rela.text
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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:
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// CHECK-NEXT: Size:
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// CHECK-NEXT: Link:
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// CHECK-NEXT: Info:
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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: 0x3 R_X86_64_GOTPC32_TLSDESC _ZL3ccc 0xFFFFFFFFFFFFFFFC
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// CHECK-NEXT: 0x9 R_X86_64_TLSDESC_CALL _ZL3ccc 0x0
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// CHECK-NEXT: ]
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// CHECK-NEXT: }
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