#ifndef LLVM_CODEGEN_MACHINERELOCATION_H
#define LLVM_CODEGEN_MACHINERELOCATION_H
-#include "llvm/Support/DataTypes.h"
+#include "llvm/System/DataTypes.h"
#include <cassert>
namespace llvm {
enum AddressType {
isResult, // Relocation has be transformed into its result pointer.
isGV, // The Target.GV field is valid.
- isGVNonLazyPtr, // Relocation of a Mac OS X NonLazy indirect reference.
+ isIndirectSym, // Relocation of an indirect symbol.
isBB, // Relocation of BB address.
isExtSym, // The Target.ExtSym field is valid.
isConstPool, // Relocation of constant pool address.
/// Offset - This is the offset from the start of the code buffer of the
/// relocation to perform.
- intptr_t Offset;
+ uintptr_t Offset;
/// ConstantVal - A field that may be used by the target relocation type.
intptr_t ConstantVal;
union {
void *Result; // If this has been resolved to a resolved pointer
- GlobalValue *GV; // If this is a pointer to a GV or a GV nonlazy ptr
+ GlobalValue *GV; // If this is a pointer to a GV or an indirect ref.
MachineBasicBlock *MBB; // If this is a pointer to a LLVM BB
const char *ExtSym; // If this is a pointer to a named symbol
unsigned Index; // Constant pool / jump table index
unsigned TargetReloType : 6; // The target relocation ID
AddressType AddrType : 4; // The field of Target to use
- bool NeedStub : 1; // True if this relocation requires a stub
+ bool MayNeedFarStub : 1; // True if this relocation may require a far-stub
bool GOTRelative : 1; // Should this relocation be relative to the GOT?
bool TargetResolve : 1; // True if target should resolve the address
/// MachineRelocation::getGV - Return a relocation entry for a GlobalValue.
///
- static MachineRelocation getGV(intptr_t offset, unsigned RelocationType,
+ static MachineRelocation getGV(uintptr_t offset, unsigned RelocationType,
GlobalValue *GV, intptr_t cst = 0,
- bool NeedStub = 0,
+ bool MayNeedFarStub = 0,
bool GOTrelative = 0) {
assert((RelocationType & ~63) == 0 && "Relocation type too large!");
MachineRelocation Result;
Result.ConstantVal = cst;
Result.TargetReloType = RelocationType;
Result.AddrType = isGV;
- Result.NeedStub = NeedStub;
+ Result.MayNeedFarStub = MayNeedFarStub;
Result.GOTRelative = GOTrelative;
Result.TargetResolve = false;
Result.Target.GV = GV;
return Result;
}
- /// MachineRelocation::getGVNonLazyPtr - Return a relocation entry for a
- /// Mac OS X non-lazy GlobalValue indirect reference.
- static MachineRelocation getGVNonLazyPtr(intptr_t offset,
- unsigned RelocationType,
- GlobalValue *GV, intptr_t cst = 0,
- bool NeedStub = 0,
- bool GOTrelative = 0) {
+ /// MachineRelocation::getIndirectSymbol - Return a relocation entry for an
+ /// indirect symbol.
+ static MachineRelocation getIndirectSymbol(uintptr_t offset,
+ unsigned RelocationType,
+ GlobalValue *GV, intptr_t cst = 0,
+ bool MayNeedFarStub = 0,
+ bool GOTrelative = 0) {
assert((RelocationType & ~63) == 0 && "Relocation type too large!");
MachineRelocation Result;
Result.Offset = offset;
Result.ConstantVal = cst;
Result.TargetReloType = RelocationType;
- Result.AddrType = isGVNonLazyPtr;
- Result.NeedStub = NeedStub;
+ Result.AddrType = isIndirectSym;
+ Result.MayNeedFarStub = MayNeedFarStub;
Result.GOTRelative = GOTrelative;
Result.TargetResolve = false;
Result.Target.GV = GV;
/// MachineRelocation::getBB - Return a relocation entry for a BB.
///
- static MachineRelocation getBB(intptr_t offset,unsigned RelocationType,
+ static MachineRelocation getBB(uintptr_t offset,unsigned RelocationType,
MachineBasicBlock *MBB, intptr_t cst = 0) {
assert((RelocationType & ~63) == 0 && "Relocation type too large!");
MachineRelocation Result;
Result.ConstantVal = cst;
Result.TargetReloType = RelocationType;
Result.AddrType = isBB;
- Result.NeedStub = false;
+ Result.MayNeedFarStub = false;
Result.GOTRelative = false;
Result.TargetResolve = false;
Result.Target.MBB = MBB;
/// MachineRelocation::getExtSym - Return a relocation entry for an external
/// symbol, like "free".
///
- static MachineRelocation getExtSym(intptr_t offset, unsigned RelocationType,
+ static MachineRelocation getExtSym(uintptr_t offset, unsigned RelocationType,
const char *ES, intptr_t cst = 0,
bool GOTrelative = 0) {
assert((RelocationType & ~63) == 0 && "Relocation type too large!");
Result.ConstantVal = cst;
Result.TargetReloType = RelocationType;
Result.AddrType = isExtSym;
- Result.NeedStub = true;
+ Result.MayNeedFarStub = true;
Result.GOTRelative = GOTrelative;
Result.TargetResolve = false;
Result.Target.ExtSym = ES;
/// MachineRelocation::getConstPool - Return a relocation entry for a constant
/// pool entry.
///
- static MachineRelocation getConstPool(intptr_t offset,unsigned RelocationType,
+ static MachineRelocation getConstPool(uintptr_t offset,unsigned RelocationType,
unsigned CPI, intptr_t cst = 0,
bool letTargetResolve = false) {
assert((RelocationType & ~63) == 0 && "Relocation type too large!");
Result.ConstantVal = cst;
Result.TargetReloType = RelocationType;
Result.AddrType = isConstPool;
- Result.NeedStub = false;
+ Result.MayNeedFarStub = false;
Result.GOTRelative = false;
Result.TargetResolve = letTargetResolve;
Result.Target.Index = CPI;
/// MachineRelocation::getJumpTable - Return a relocation entry for a jump
/// table entry.
///
- static MachineRelocation getJumpTable(intptr_t offset,unsigned RelocationType,
+ static MachineRelocation getJumpTable(uintptr_t offset,unsigned RelocationType,
unsigned JTI, intptr_t cst = 0,
bool letTargetResolve = false) {
assert((RelocationType & ~63) == 0 && "Relocation type too large!");
Result.ConstantVal = cst;
Result.TargetReloType = RelocationType;
Result.AddrType = isJumpTable;
- Result.NeedStub = false;
+ Result.MayNeedFarStub = false;
Result.GOTRelative = false;
Result.TargetResolve = letTargetResolve;
Result.Target.Index = JTI;
return AddrType == isGV;
}
- /// isGlobalValueNonLazyPtr - Return true if this relocation is the address
- /// of a Mac OS X non-lazy indirect reference.
- bool isGlobalValueNonLazyPtr() const {
- return AddrType == isGVNonLazyPtr;
+ /// isIndirectSymbol - Return true if this relocation is the address an
+ /// indirect symbol
+ bool isIndirectSymbol() const {
+ return AddrType == isIndirectSym;
}
/// isBasicBlock - Return true if this relocation is a basic block reference.
return GOTRelative;
}
- /// doesntNeedStub - This function returns true if the JIT for this target
- /// target is capable of directly handling the relocated GlobalValue reference
- /// without using either a stub function or issuing an extra load to get the
- /// GV address.
- bool doesntNeedStub() const {
- return !NeedStub;
+ /// mayNeedFarStub - This function returns true if the JIT for this target may
+ /// need either a stub function or an indirect global-variable load to handle
+ /// the relocated GlobalValue reference. For example, the x86-64 call
+ /// instruction can only call functions within +/-2GB of the call site.
+ /// Anything farther away needs a longer mov+call sequence, which can't just
+ /// be written on top of the existing call.
+ bool mayNeedFarStub() const {
+ return MayNeedFarStub;
}
/// letTargetResolve - Return true if the target JITInfo is usually
/// getGlobalValue - If this is a global value reference, return the
/// referenced global.
GlobalValue *getGlobalValue() const {
- assert((isGlobalValue() || isGlobalValueNonLazyPtr()) &&
+ assert((isGlobalValue() || isIndirectSymbol()) &&
"This is not a global value reference!");
return Target.GV;
}
projects / oota-llvm.git / blobdiff