mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-26 14:33:02 +02:00
d32e304f9c
This extends the work done in r233995 so that now getFragment (in addition to getSection) also works for variable symbols. With that the existing logic to decide if a-b can be computed works even if a or b are variables. Given that, the expression evaluation can avoid expanding variables as aggressively and that in turn lets the relocation code see the original variable. In order for this to work with the asm streamer, there is now a dummy fragment per section. It is used to assign a section to a symbol when no other fragment exists. This patch is a joint work by Maxim Ostapenko andy myself. llvm-svn: 249303
113 lines
3.0 KiB
C++
113 lines
3.0 KiB
C++
//====- SparcMCExpr.h - Sparc specific MC expression classes --*- C++ -*-=====//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file describes Sparc-specific MCExprs, used for modifiers like
|
|
// "%hi" or "%lo" etc.,
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_LIB_TARGET_SPARC_MCTARGETDESC_SPARCMCEXPR_H
|
|
#define LLVM_LIB_TARGET_SPARC_MCTARGETDESC_SPARCMCEXPR_H
|
|
|
|
#include "SparcFixupKinds.h"
|
|
#include "llvm/MC/MCExpr.h"
|
|
|
|
namespace llvm {
|
|
|
|
class StringRef;
|
|
class SparcMCExpr : public MCTargetExpr {
|
|
public:
|
|
enum VariantKind {
|
|
VK_Sparc_None,
|
|
VK_Sparc_LO,
|
|
VK_Sparc_HI,
|
|
VK_Sparc_H44,
|
|
VK_Sparc_M44,
|
|
VK_Sparc_L44,
|
|
VK_Sparc_HH,
|
|
VK_Sparc_HM,
|
|
VK_Sparc_PC22,
|
|
VK_Sparc_PC10,
|
|
VK_Sparc_GOT22,
|
|
VK_Sparc_GOT10,
|
|
VK_Sparc_WPLT30,
|
|
VK_Sparc_R_DISP32,
|
|
VK_Sparc_TLS_GD_HI22,
|
|
VK_Sparc_TLS_GD_LO10,
|
|
VK_Sparc_TLS_GD_ADD,
|
|
VK_Sparc_TLS_GD_CALL,
|
|
VK_Sparc_TLS_LDM_HI22,
|
|
VK_Sparc_TLS_LDM_LO10,
|
|
VK_Sparc_TLS_LDM_ADD,
|
|
VK_Sparc_TLS_LDM_CALL,
|
|
VK_Sparc_TLS_LDO_HIX22,
|
|
VK_Sparc_TLS_LDO_LOX10,
|
|
VK_Sparc_TLS_LDO_ADD,
|
|
VK_Sparc_TLS_IE_HI22,
|
|
VK_Sparc_TLS_IE_LO10,
|
|
VK_Sparc_TLS_IE_LD,
|
|
VK_Sparc_TLS_IE_LDX,
|
|
VK_Sparc_TLS_IE_ADD,
|
|
VK_Sparc_TLS_LE_HIX22,
|
|
VK_Sparc_TLS_LE_LOX10
|
|
};
|
|
|
|
private:
|
|
const VariantKind Kind;
|
|
const MCExpr *Expr;
|
|
|
|
explicit SparcMCExpr(VariantKind Kind, const MCExpr *Expr)
|
|
: Kind(Kind), Expr(Expr) {}
|
|
|
|
public:
|
|
/// @name Construction
|
|
/// @{
|
|
|
|
static const SparcMCExpr *create(VariantKind Kind, const MCExpr *Expr,
|
|
MCContext &Ctx);
|
|
/// @}
|
|
/// @name Accessors
|
|
/// @{
|
|
|
|
/// getOpcode - Get the kind of this expression.
|
|
VariantKind getKind() const { return Kind; }
|
|
|
|
/// getSubExpr - Get the child of this expression.
|
|
const MCExpr *getSubExpr() const { return Expr; }
|
|
|
|
/// getFixupKind - Get the fixup kind of this expression.
|
|
Sparc::Fixups getFixupKind() const { return getFixupKind(Kind); }
|
|
|
|
/// @}
|
|
void printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const override;
|
|
bool evaluateAsRelocatableImpl(MCValue &Res,
|
|
const MCAsmLayout *Layout,
|
|
const MCFixup *Fixup) const override;
|
|
void visitUsedExpr(MCStreamer &Streamer) const override;
|
|
MCFragment *findAssociatedFragment() const override {
|
|
return getSubExpr()->findAssociatedFragment();
|
|
}
|
|
|
|
void fixELFSymbolsInTLSFixups(MCAssembler &Asm) const override;
|
|
|
|
static bool classof(const MCExpr *E) {
|
|
return E->getKind() == MCExpr::Target;
|
|
}
|
|
|
|
static bool classof(const SparcMCExpr *) { return true; }
|
|
|
|
static VariantKind parseVariantKind(StringRef name);
|
|
static bool printVariantKind(raw_ostream &OS, VariantKind Kind);
|
|
static Sparc::Fixups getFixupKind(VariantKind Kind);
|
|
};
|
|
|
|
} // end namespace llvm.
|
|
|
|
#endif
|