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MC: Move target specific fixup info descriptors to TargetAsmBackend instead of

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the MCCodeEmitter, which seems like a better organization.
 - Also, cleaned up some magic constants while in the area.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121953 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Daniel Dunbar
2010-12-16 03:20:06 +00:00
parent f13743bb3c
commit 2761fc4270
15 changed files with 131 additions and 115 deletions
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21
lib/Target/X86/X86AsmBackend.cpp
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@@ -13,6 +13,7 @@
#include "llvm/ADT/Twine.h"
#include "llvm/MC/MCAssembler.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCFixupKindInfo.h"
#include "llvm/MC/MCObjectFormat.h"
#include "llvm/MC/MCObjectWriter.h"
#include "llvm/MC/MCSectionCOFF.h"
@@ -49,6 +50,26 @@ public:
X86AsmBackend(const Target &T)
: TargetAsmBackend() {}
unsigned getNumFixupKinds() const {
return X86::NumTargetFixupKinds;
}
const MCFixupKindInfo &getFixupKindInfo(MCFixupKind Kind) const {
const static MCFixupKindInfo Infos[X86::NumTargetFixupKinds] = {
{ "reloc_riprel_4byte", 0, 4 * 8, MCFixupKindInfo::FKF_IsPCRel },
{ "reloc_riprel_4byte_movq_load", 0, 4 * 8, MCFixupKindInfo::FKF_IsPCRel},
{ "reloc_signed_4byte", 0, 4 * 8, 0},
{ "reloc_global_offset_table", 0, 4 * 8, 0}
};
if (Kind < FirstTargetFixupKind)
return TargetAsmBackend::getFixupKindInfo(Kind);
assert(unsigned(Kind - FirstTargetFixupKind) < getNumFixupKinds() &&
"Invalid kind!");
return Infos[Kind - FirstTargetFixupKind];
}
void ApplyFixup(const MCFixup &Fixup, char *Data, unsigned DataSize,
uint64_t Value) const {
unsigned Size = 1 << getFixupKindLog2Size(Fixup.getKind());