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[PowerPC] Support @higher et.al. modifiers

Browse Source 
This adds support for the @higher, @highera, @highest, and @highesta
modifers, including some missing relocation types.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184550 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Ulrich Weigand 2013-06-21 14:43:42 +00:00
parent f8f87dcfce
commit f7c1ee79fe
10 changed files with 107 additions and 3 deletions
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4
include/llvm/MC/MCExpr.h
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@ -174,6 +174,10 @@ public:
VK_PPC_LO, // symbol@l
VK_PPC_HI, // symbol@h
VK_PPC_HA, // symbol@ha
VK_PPC_HIGHER, // symbol@higher
VK_PPC_HIGHERA, // symbol@highera
VK_PPC_HIGHEST, // symbol@highest
VK_PPC_HIGHESTA, // symbol@highesta
VK_PPC_TOCBASE, // symbol@tocbase
VK_PPC_TOC, // symbol@toc
VK_PPC_TOC_LO, // symbol@toc@l

2
include/llvm/Object/ELF.h
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@ -2053,7 +2053,9 @@ StringRef ELFObjectFile<ELFT>::getRelocationTypeName(uint32_t Type) const {
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_REL32);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR64);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_HIGHER);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_HIGHERA);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_HIGHEST);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_HIGHESTA);
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);

2
include/llvm/Support/ELF.h
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@ -484,7 +484,9 @@ enum {
R_PPC64_REL32 = 26,
R_PPC64_ADDR64 = 38,
R_PPC64_ADDR16_HIGHER = 39,
R_PPC64_ADDR16_HIGHERA = 40,
R_PPC64_ADDR16_HIGHEST = 41,
R_PPC64_ADDR16_HIGHESTA = 42,
R_PPC64_REL64 = 44,
R_PPC64_TOC16 = 47,
R_PPC64_TOC16_LO = 48,

12
lib/MC/MCExpr.cpp
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@ -199,6 +199,10 @@ StringRef MCSymbolRefExpr::getVariantKindName(VariantKind Kind) {
case VK_PPC_LO: return "l";
case VK_PPC_HI: return "h";
case VK_PPC_HA: return "ha";
case VK_PPC_HIGHER: return "higher";
case VK_PPC_HIGHERA: return "highera";
case VK_PPC_HIGHEST: return "highest";
case VK_PPC_HIGHESTA: return "highesta";
case VK_PPC_TOCBASE: return "tocbase";
case VK_PPC_TOC: return "toc";
case VK_PPC_TOC_LO: return "toc@l";
@ -287,6 +291,14 @@ MCSymbolRefExpr::getVariantKindForName(StringRef Name) {
.Case("h", VK_PPC_HI)
.Case("HA", VK_PPC_HA)
.Case("ha", VK_PPC_HA)
.Case("HIGHER", VK_PPC_HIGHER)
.Case("higher", VK_PPC_HIGHER)
.Case("HIGHERA", VK_PPC_HIGHERA)
.Case("highera", VK_PPC_HIGHERA)
.Case("HIGHEST", VK_PPC_HIGHEST)
.Case("highest", VK_PPC_HIGHEST)
.Case("HIGHESTA", VK_PPC_HIGHESTA)
.Case("highesta", VK_PPC_HIGHESTA)
.Case("TOCBASE", VK_PPC_TOCBASE)
.Case("tocbase", VK_PPC_TOCBASE)
.Case("TOC", VK_PPC_TOC)

12
lib/Target/PowerPC/AsmParser/PPCAsmParser.cpp
View File

@ -575,6 +575,18 @@ ExtractModifierFromExpr(const MCExpr *E,
case MCSymbolRefExpr::VK_PPC_HA:
Variant = PPCMCExpr::VK_PPC_HA;
break;
case MCSymbolRefExpr::VK_PPC_HIGHER:
Variant = PPCMCExpr::VK_PPC_HIGHER;
break;
case MCSymbolRefExpr::VK_PPC_HIGHERA:
Variant = PPCMCExpr::VK_PPC_HIGHERA;
break;
case MCSymbolRefExpr::VK_PPC_HIGHEST:
Variant = PPCMCExpr::VK_PPC_HIGHEST;
break;
case MCSymbolRefExpr::VK_PPC_HIGHESTA:
Variant = PPCMCExpr::VK_PPC_HIGHESTA;
break;
default:
return 0;
}

12
lib/Target/PowerPC/MCTargetDesc/PPCELFObjectWriter.cpp
View File

@ -96,6 +96,18 @@ unsigned PPCELFObjectWriter::getRelocTypeInner(const MCValue &Target,
case MCSymbolRefExpr::VK_PPC_HA:
Type = ELF::R_PPC_ADDR16_HA;
break;
case MCSymbolRefExpr::VK_PPC_HIGHER:
Type = ELF::R_PPC64_ADDR16_HIGHER;
break;
case MCSymbolRefExpr::VK_PPC_HIGHERA:
Type = ELF::R_PPC64_ADDR16_HIGHERA;
break;
case MCSymbolRefExpr::VK_PPC_HIGHEST:
Type = ELF::R_PPC64_ADDR16_HIGHEST;
break;
case MCSymbolRefExpr::VK_PPC_HIGHESTA:
Type = ELF::R_PPC64_ADDR16_HIGHESTA;
break;
case MCSymbolRefExpr::VK_PPC_TOC:
Type = ELF::R_PPC64_TOC16;
break;

30
lib/Target/PowerPC/MCTargetDesc/PPCMCExpr.cpp
View File

@ -42,6 +42,10 @@ void PPCMCExpr::PrintImpl(raw_ostream &OS) const {
case VK_PPC_LO: OS << "@l"; break;
case VK_PPC_HI: OS << "@h"; break;
case VK_PPC_HA: OS << "@ha"; break;
case VK_PPC_HIGHER: OS << "@higher"; break;
case VK_PPC_HIGHERA: OS << "@highera"; break;
case VK_PPC_HIGHEST: OS << "@highest"; break;
case VK_PPC_HIGHESTA: OS << "@highesta"; break;
}
}
}
@ -66,7 +70,19 @@ PPCMCExpr::EvaluateAsRelocatableImpl(MCValue &Res,
Result = (Result >> 16) & 0xffff;
break;
case VK_PPC_HA:
Result = ((Result >> 16) + ((Result & 0x8000) ? 1 : 0)) & 0xffff;
Result = ((Result + 0x8000) >> 16) & 0xffff;
break;
case VK_PPC_HIGHER:
Result = (Result >> 32) & 0xffff;
break;
case VK_PPC_HIGHERA:
Result = ((Result + 0x8000) >> 32) & 0xffff;
break;
case VK_PPC_HIGHEST:
Result = (Result >> 48) & 0xffff;
break;
case VK_PPC_HIGHESTA:
Result = ((Result + 0x8000) >> 48) & 0xffff;
break;
}
Res = MCValue::get(Result);
@ -88,6 +104,18 @@ PPCMCExpr::EvaluateAsRelocatableImpl(MCValue &Res,
case VK_PPC_HA:
Modifier = MCSymbolRefExpr::VK_PPC_HA;
break;
case VK_PPC_HIGHERA:
Modifier = MCSymbolRefExpr::VK_PPC_HIGHERA;
break;
case VK_PPC_HIGHER:
Modifier = MCSymbolRefExpr::VK_PPC_HIGHER;
break;
case VK_PPC_HIGHEST:
Modifier = MCSymbolRefExpr::VK_PPC_HIGHEST;
break;
case VK_PPC_HIGHESTA:
Modifier = MCSymbolRefExpr::VK_PPC_HIGHESTA;
break;
}
Sym = MCSymbolRefExpr::Create(&Sym->getSymbol(), Modifier, Context);
Res = MCValue::get(Sym, Value.getSymB(), Value.getConstant());

6
lib/Target/PowerPC/MCTargetDesc/PPCMCExpr.h
View File

@ -22,7 +22,11 @@ public:
VK_PPC_None,
VK_PPC_LO,
VK_PPC_HI,
VK_PPC_HA
VK_PPC_HA,
VK_PPC_HIGHER,
VK_PPC_HIGHERA,
VK_PPC_HIGHEST,
VK_PPC_HIGHESTA
};
private:

10
test/MC/PowerPC/ppc64-fixup-apply.s
View File

@ -38,6 +38,13 @@ addis 1, 1, target6@h
.set target6, 0x4321fedc
addi 1, 1, target7@higher
addis 1, 1, target7@highest
addi 1, 1, target7@highera
addis 1, 1, target7@highesta
.set target7, 0x1234ffffffff8000
.data
.quad v1
@ -59,7 +66,7 @@ addis 1, 1, target6@h
# CHECK-NEXT: ]
# CHECK-NEXT: Address: 0x0
# CHECK-NEXT: Offset:
# CHECK-NEXT: Size: 48
# CHECK-NEXT: Size: 64
# CHECK-NEXT: Link: 0
# CHECK-NEXT: Info: 0
# CHECK-NEXT: AddressAlignment: 4
@ -68,6 +75,7 @@ addis 1, 1, target6@h
# CHECK-NEXT: 0000: 38211234 3C211234 38215678 3C211234
# CHECK-NEXT: 0010: 38214444 3C211111 38218001 3C211001
# CHECK-NEXT: 0020: 38210008 3C210000 38214321 3C214321
# CHECK-NEXT: 0030: 3821FFFF 3C211234 38210000 3C211235
# CHECK-NEXT: )
# CHECK-NEXT: }

20
test/MC/PowerPC/ppc64-fixups.s
View File

@ -57,6 +57,26 @@
# CHECK-REL: 0x{{[0-9A-F]*[26AE]}} R_PPC64_ADDR16_HI target 0x0
lis 3, target@h
# CHECK: li 3, target@higher # encoding: [0x38,0x60,A,A]
# CHECK-NEXT: # fixup A - offset: 2, value: target@higher, kind: fixup_ppc_half16
# CHECK-REL: 0x{{[0-9A-F]*[26AE]}} R_PPC64_ADDR16_HIGHER target 0x0
li 3, target@higher
# CHECK: lis 3, target@highest # encoding: [0x3c,0x60,A,A]
# CHECK-NEXT: # fixup A - offset: 2, value: target@highest, kind: fixup_ppc_half16
# CHECK-REL: 0x{{[0-9A-F]*[26AE]}} R_PPC64_ADDR16_HIGHEST target 0x0
lis 3, target@highest
# CHECK: li 3, target@highera # encoding: [0x38,0x60,A,A]
# CHECK-NEXT: # fixup A - offset: 2, value: target@highera, kind: fixup_ppc_half16
# CHECK-REL: 0x{{[0-9A-F]*[26AE]}} R_PPC64_ADDR16_HIGHERA target 0x0
li 3, target@highera
# CHECK: lis 3, target@highesta # encoding: [0x3c,0x60,A,A]
# CHECK-NEXT: # fixup A - offset: 2, value: target@highesta, kind: fixup_ppc_half16
# CHECK-REL: 0x{{[0-9A-F]*[26AE]}} R_PPC64_ADDR16_HIGHESTA target 0x0
lis 3, target@highesta
# CHECK: lwz 1, target@l(3) # encoding: [0x80,0x23,A,A]
# CHECK-NEXT: # fixup A - offset: 2, value: target@l, kind: fixup_ppc_half16
# CHECK-REL: 0x{{[0-9A-F]*[26AE]}} R_PPC64_ADDR16_LO target 0x0