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make getFixupKindInfo return a const reference, allowing

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the tables to be const.  Teach MCCodeEmitter to handle
the target-indep kinds so that we don't crash on them.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95924 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2010-02-11 21:27:18 +00:00
parent 9637dd50f4
commit 8d31de6268
4 changed files with 22 additions and 7 deletions
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2
include/llvm/MC/MCCodeEmitter.h
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@ -56,7 +56,7 @@ public:
virtual unsigned getNumFixupKinds() const = 0; virtual unsigned getNumFixupKinds() const = 0;
/// getFixupKindInfo - Get information on a fixup kind. /// getFixupKindInfo - Get information on a fixup kind.
virtual MCFixupKindInfo &getFixupKindInfo(MCFixupKind Kind) const = 0; virtual const MCFixupKindInfo &getFixupKindInfo(MCFixupKind Kind) const;
/// @} /// @}

4
lib/MC/MCAsmStreamer.cpp
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@ -552,7 +552,7 @@ void MCAsmStreamer::AddEncodingComment(const MCInst &Inst) {
for (unsigned i = 0, e = Fixups.size(); i != e; ++i) { for (unsigned i = 0, e = Fixups.size(); i != e; ++i) {
MCFixup &F = Fixups[i]; MCFixup &F = Fixups[i];
MCFixupKindInfo &Info = Emitter->getFixupKindInfo(F.getKind()); const MCFixupKindInfo &Info = Emitter->getFixupKindInfo(F.getKind());
for (unsigned j = 0; j != Info.TargetSize; ++j) { for (unsigned j = 0; j != Info.TargetSize; ++j) {
unsigned Index = F.getOffset() * 8 + Info.TargetOffset + j; unsigned Index = F.getOffset() * 8 + Info.TargetOffset + j;
assert(Index < Code.size() * 8 && "Invalid offset in fixup!"); assert(Index < Code.size() * 8 && "Invalid offset in fixup!");
@ -599,7 +599,7 @@ void MCAsmStreamer::AddEncodingComment(const MCInst &Inst) {
for (unsigned i = 0, e = Fixups.size(); i != e; ++i) { for (unsigned i = 0, e = Fixups.size(); i != e; ++i) {
MCFixup &F = Fixups[i]; MCFixup &F = Fixups[i];
MCFixupKindInfo &Info = Emitter->getFixupKindInfo(F.getKind()); const MCFixupKindInfo &Info = Emitter->getFixupKindInfo(F.getKind());
OS << " fixup " << char('A' + i) << " - " << "offset: " << F.getOffset() OS << " fixup " << char('A' + i) << " - " << "offset: " << F.getOffset()
<< ", value: " << *F.getValue() << ", kind: " << Info.Name << "\n"; << ", value: " << *F.getValue() << ", kind: " << Info.Name << "\n";
} }

12
lib/MC/MCCodeEmitter.cpp
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@ -16,3 +16,15 @@ MCCodeEmitter::MCCodeEmitter() {
MCCodeEmitter::~MCCodeEmitter() { MCCodeEmitter::~MCCodeEmitter() {
} }
const MCFixupKindInfo &MCCodeEmitter::getFixupKindInfo(MCFixupKind Kind) const {
static const MCFixupKindInfo Builtins[] = {
{ "FK_Data_1", 0, 8 },
{ "FK_Data_2", 0, 16 },
{ "FK_Data_4", 0, 32 },
{ "FK_Data_8", 0, 64 }
};
assert(Kind <= 3 && "Unknown fixup kind");
return Builtins[Kind];
}

11
lib/Target/X86/X86MCCodeEmitter.cpp
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@ -45,16 +45,19 @@ public:
~X86MCCodeEmitter() {} ~X86MCCodeEmitter() {}
unsigned getNumFixupKinds() const { unsigned getNumFixupKinds() const {
return 1; return 2;
} }
MCFixupKindInfo &getFixupKindInfo(MCFixupKind Kind) const { const MCFixupKindInfo &getFixupKindInfo(MCFixupKind Kind) const {
static MCFixupKindInfo Infos[] = { const static MCFixupKindInfo Infos[] = {
{ "reloc_pcrel_4byte", 0, 4 * 8 }, { "reloc_pcrel_4byte", 0, 4 * 8 },
{ "reloc_pcrel_1byte", 0, 1 * 8 } { "reloc_pcrel_1byte", 0, 1 * 8 }
}; };
if (Kind < FirstTargetFixupKind)
return MCCodeEmitter::getFixupKindInfo(Kind);
assert(Kind >= FirstTargetFixupKind && Kind < MaxTargetFixupKind && assert(unsigned(Kind - FirstTargetFixupKind) < getNumFixupKinds() &&
"Invalid kind!"); "Invalid kind!");
return Infos[Kind - FirstTargetFixupKind]; return Infos[Kind - FirstTargetFixupKind];
} }