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Local dynamic TLS model for direct object output. Create the correct TLS MIPS

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ELF relocations.

Patch by Jack Carter.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147118 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Akira Hatanaka 2011-12-22 01:05:17 +00:00
parent 74cab51aa5
commit bc24985c5f
7 changed files with 85 additions and 1 deletions
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1
include/llvm/MC/MCExpr.h
View File

@ -176,7 +176,6 @@ public:
VK_PPC_GAS_HA16, // symbol@ha
VK_PPC_GAS_LO16, // symbol@l
VK_Mips_None,
VK_Mips_GPREL,
VK_Mips_GOT_CALL,
VK_Mips_GOT16,

9
lib/MC/ELFObjectWriter.cpp
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@ -1474,6 +1474,15 @@ unsigned MipsELFObjectWriter::GetRelocType(const MCValue &Target,
case Mips::fixup_Mips_TPREL_LO:
Type = ELF::R_MIPS_TLS_TPREL_LO16;
break;
case Mips::fixup_Mips_TLSLDM:
Type = ELF::R_MIPS_TLS_LDM;
break;
case Mips::fixup_Mips_DTPREL_HI:
Type = ELF::R_MIPS_TLS_DTPREL_HI16;
break;
case Mips::fixup_Mips_DTPREL_LO:
Type = ELF::R_MIPS_TLS_DTPREL_LO16;
break;
case Mips::fixup_Mips_Branch_PCRel:
case Mips::fixup_Mips_PC16:
Type = ELF::R_MIPS_PC16;

18
lib/MC/MCExpr.cpp
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@ -200,6 +200,24 @@ StringRef MCSymbolRefExpr::getVariantKindName(VariantKind Kind) {
case VK_PPC_DARWIN_LO16: return "lo16";
case VK_PPC_GAS_HA16: return "ha";
case VK_PPC_GAS_LO16: return "l";
case VK_Mips_GPREL: return "GPREL";
case VK_Mips_GOT_CALL: return "GOT_CALL";
case VK_Mips_GOT16: return "GOT16";
case VK_Mips_GOT: return "GOT";
case VK_Mips_ABS_HI: return "ABS_HI";
case VK_Mips_ABS_LO: return "ABS_LO";
case VK_Mips_TLSGD: return "TLSGD";
case VK_Mips_TLSLDM: return "TLSLDM";
case VK_Mips_DTPREL_HI: return "DTPREL_HI";
case VK_Mips_DTPREL_LO: return "DTPREL_LO";
case VK_Mips_GOTTPREL: return "GOTTPREL";
case VK_Mips_TPREL_HI: return "TPREL_HI";
case VK_Mips_TPREL_LO: return "TPREL_LO";
case VK_Mips_GPOFF_HI: return "GPOFF_HI";
case VK_Mips_GPOFF_LO: return "GPOFF_LO";
case VK_Mips_GOT_DISP: return "GOT_DISP";
case VK_Mips_GOT_PAGE: return "GOT_PAGE";
case VK_Mips_GOT_OFST: return "GOT_OFST";
}
}

3
lib/Target/Mips/MCTargetDesc/MipsAsmBackend.cpp
View File

@ -141,6 +141,9 @@ public:
{ "fixup_Mips_GOTTPREL", 0, 16, 0 },
{ "fixup_Mips_TPREL_HI", 0, 16, 0 },
{ "fixup_Mips_TPREL_LO", 0, 16, 0 },
{ "fixup_Mips_TLSLDM", 0, 16, 0 },
{ "fixup_Mips_DTPREL_HI", 0, 16, 0 },
{ "fixup_Mips_DTPREL_LO", 0, 16, 0 },
{ "fixup_Mips_Branch_PCRel", 0, 16, MCFixupKindInfo::FKF_IsPCRel }
};

9
lib/Target/Mips/MCTargetDesc/MipsFixupKinds.h
View File

@ -83,6 +83,15 @@ namespace Mips {
// resulting in - R_MIPS_TLS_TPREL_LO16.
fixup_Mips_TPREL_LO,
// resulting in - R_MIPS_TLS_LDM.
fixup_Mips_TLSLDM,
// resulting in - R_MIPS_TLS_DTPREL_HI16.
fixup_Mips_DTPREL_HI,
// resulting in - R_MIPS_TLS_DTPREL_LO16.
fixup_Mips_DTPREL_LO,
// PC relative branch fixup resulting in - R_MIPS_PC16
fixup_Mips_Branch_PCRel,

10
lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp
View File

@ -187,6 +187,7 @@ getMachineOpValue(const MCInst &MI, const MCOperand &MO,
if (Kind == MCExpr::SymbolRef) {
Mips::Fixups FixupKind;
switch(cast<MCSymbolRefExpr>(Expr)->getKind()) {
case MCSymbolRefExpr::VK_Mips_GPREL:
FixupKind = Mips::fixup_Mips_GPREL16;
@ -209,6 +210,15 @@ getMachineOpValue(const MCInst &MI, const MCOperand &MO,
case MCSymbolRefExpr::VK_Mips_TLSGD:
FixupKind = Mips::fixup_Mips_TLSGD;
break;
case MCSymbolRefExpr::VK_Mips_TLSLDM:
FixupKind = Mips::fixup_Mips_TLSLDM;
break;
case MCSymbolRefExpr::VK_Mips_DTPREL_HI:
FixupKind = Mips::fixup_Mips_DTPREL_HI;
break;
case MCSymbolRefExpr::VK_Mips_DTPREL_LO:
FixupKind = Mips::fixup_Mips_DTPREL_LO;
break;
case MCSymbolRefExpr::VK_Mips_GOTTPREL:
FixupKind = Mips::fixup_Mips_GOTTPREL;
break;

36
test/MC/Mips/elf-tls.ll Normal file
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@ -0,0 +1,36 @@
; RUN: llc -filetype=obj -mtriple mipsel-unknown-linux %s -o - | elf-dump --dump-section-data | FileCheck %s
; Check that the appropriate relocations were created.
; CHECK: ('r_type', 0x2b)
; CHECK: ('r_type', 0x2c)
; CHECK: ('r_type', 0x2d)
@t1 = thread_local global i32 0, align 4
define i32 @f1() nounwind {
entry:
%tmp = load i32* @t1, align 4
ret i32 %tmp
}
@t2 = external thread_local global i32
define i32 @f2() nounwind {
entry:
%tmp = load i32* @t2, align 4
ret i32 %tmp
}
@f3.i = internal thread_local unnamed_addr global i32 1, align 4
define i32 @f3() nounwind {
entry:
%0 = load i32* @f3.i, align 4
%inc = add nsw i32 %0, 1
store i32 %inc, i32* @f3.i, align 4
ret i32 %inc
}