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[PowerPC] Support @toc@h modifier

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This adds the relocation type and other necessary infrastructure
to use the @toc@h modifier in the assembler.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184549 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Ulrich Weigand 2013-06-21 14:43:10 +00:00
parent d284957246
commit f8f87dcfce
6 changed files with 14 additions and 0 deletions
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1
include/llvm/MC/MCExpr.h
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@ -177,6 +177,7 @@ public:
VK_PPC_TOCBASE, // symbol@tocbase
VK_PPC_TOC, // symbol@toc
VK_PPC_TOC_LO, // symbol@toc@l
VK_PPC_TOC_HI, // symbol@toc@h
VK_PPC_TOC_HA, // symbol@toc@ha
VK_PPC_TPREL_LO, // symbol@tprel@l
VK_PPC_TPREL_HA, // symbol@tprel@ha

1
include/llvm/Object/ELF.h
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@ -2057,6 +2057,7 @@ StringRef ELFObjectFile<ELFT>::getRelocationTypeName(uint32_t Type) const {
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_REL64);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC16);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC16_LO);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC16_HI);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC16_HA);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_DS);

1
include/llvm/Support/ELF.h
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@ -488,6 +488,7 @@ enum {
R_PPC64_REL64 = 44,
R_PPC64_TOC16 = 47,
R_PPC64_TOC16_LO = 48,
R_PPC64_TOC16_HI = 49,
R_PPC64_TOC16_HA = 50,
R_PPC64_TOC = 51,
R_PPC64_ADDR16_DS = 56,

3
lib/MC/MCExpr.cpp
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@ -202,6 +202,7 @@ StringRef MCSymbolRefExpr::getVariantKindName(VariantKind Kind) {
case VK_PPC_TOCBASE: return "tocbase";
case VK_PPC_TOC: return "toc";
case VK_PPC_TOC_LO: return "toc@l";
case VK_PPC_TOC_HI: return "toc@h";
case VK_PPC_TOC_HA: return "toc@ha";
case VK_PPC_TPREL_LO: return "tprel@l";
case VK_PPC_TPREL_HA: return "tprel@ha";
@ -292,6 +293,8 @@ MCSymbolRefExpr::getVariantKindForName(StringRef Name) {
.Case("toc", VK_PPC_TOC)
.Case("TOC@L", VK_PPC_TOC_LO)
.Case("toc@l", VK_PPC_TOC_LO)
.Case("TOC@H", VK_PPC_TOC_HI)
.Case("toc@h", VK_PPC_TOC_HI)
.Case("TOC@HA", VK_PPC_TOC_HA)
.Case("toc@ha", VK_PPC_TOC_HA)
.Case("TLS", VK_PPC_TLS)

3
lib/Target/PowerPC/MCTargetDesc/PPCELFObjectWriter.cpp
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@ -102,6 +102,9 @@ unsigned PPCELFObjectWriter::getRelocTypeInner(const MCValue &Target,
case MCSymbolRefExpr::VK_PPC_TOC_LO:
Type = ELF::R_PPC64_TOC16_LO;
break;
case MCSymbolRefExpr::VK_PPC_TOC_HI:
Type = ELF::R_PPC64_TOC16_HI;
break;
case MCSymbolRefExpr::VK_PPC_TOC_HA:
Type = ELF::R_PPC64_TOC16_HA;
break;

5
test/MC/PowerPC/ppc64-fixups.s
View File

@ -82,6 +82,11 @@
# CHECK-REL: 0x{{[0-9A-F]*[26AE]}} R_PPC64_TOC16_LO target 0x0
addi 4, 3, target@toc@l
# CHECK: addis 3, 2, target@toc@h # encoding: [0x3c,0x62,A,A]
# CHECK-NEXT: # fixup A - offset: 2, value: target@toc@h, kind: fixup_ppc_half16
# CHECK-REL: 0x{{[0-9A-F]*[26AE]}} R_PPC64_TOC16_HI target 0x0
addis 3, 2, target@toc@h
# CHECK: lwz 1, target@toc@l(3) # encoding: [0x80,0x23,A,A]
# CHECK-NEXT: # fixup A - offset: 2, value: target@toc@l, kind: fixup_ppc_half16
# CHECK-REL: 0x{{[0-9A-F]*[26AE]}} R_PPC64_TOC16_LO target 0x0