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Classic JIT is still being supported by MIPS, along with MCJIT.

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This change adds endian-awareness to MipsJITInfo and emitWordLE in
MipsCodeEmitter has become emitWord now to support both endianness.

Patch by Petar Jovanovic.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169177 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Akira Hatanaka 2012-12-03 23:11:12 +00:00
parent cb66b5dd7a
commit ff0b2cfa3b
3 changed files with 24 additions and 11 deletions
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13
lib/Target/Mips/MipsCodeEmitter.cpp
View File

@ -85,7 +85,7 @@ class MipsCodeEmitter : public MachineFunctionPass {
private:
void emitWordLE(unsigned Word);
void emitWord(unsigned Word);
/// Routines that handle operands which add machine relocations which are
/// fixed up by the relocation stage.
@ -127,7 +127,7 @@ bool MipsCodeEmitter::runOnMachineFunction(MachineFunction &MF) {
MCPEs = &MF.getConstantPool()->getConstants();
MJTEs = 0;
if (MF.getJumpTableInfo()) MJTEs = &MF.getJumpTableInfo()->getJumpTables();
JTI->Initialize(MF, IsPIC);
JTI->Initialize(MF, IsPIC, Subtarget->isLittle());
MCE.setModuleInfo(&getAnalysis<MachineModuleInfo> ());
do {
@ -274,16 +274,19 @@ void MipsCodeEmitter::emitInstruction(const MachineInstr &MI) {
if ((MI.getDesc().TSFlags & MipsII::FormMask) == MipsII::Pseudo)
return;
emitWordLE(getBinaryCodeForInstr(MI));
emitWord(getBinaryCodeForInstr(MI));
++NumEmitted; // Keep track of the # of mi's emitted
MCE.processDebugLoc(MI.getDebugLoc(), false);
}
void MipsCodeEmitter::emitWordLE(unsigned Word) {
void MipsCodeEmitter::emitWord(unsigned Word) {
DEBUG(errs() << " 0x";
errs().write_hex(Word) << "\n");
MCE.emitWordLE(Word);
if (Subtarget->isLittle())
MCE.emitWordLE(Word);
else
MCE.emitWordBE(Word);
}
/// createMipsJITCodeEmitterPass - Return a pass that emits the collected Mips

15
lib/Target/Mips/MipsJITInfo.cpp
View File

@ -222,10 +222,17 @@ void *MipsJITInfo::emitFunctionStub(const Function *F, void *Fn,
// addiu t9, t9, %lo(EmittedAddr)
// jalr t8, t9
// nop
JCE.emitWordLE(0xf << 26 | 25 << 16 | Hi);
JCE.emitWordLE(9 << 26 | 25 << 21 | 25 << 16 | Lo);
JCE.emitWordLE(25 << 21 | 24 << 11 | 9);
JCE.emitWordLE(0);
if (IsLittleEndian) {
JCE.emitWordLE(0xf << 26 | 25 << 16 | Hi);
JCE.emitWordLE(9 << 26 | 25 << 21 | 25 << 16 | Lo);
JCE.emitWordLE(25 << 21 | 24 << 11 | 9);
JCE.emitWordLE(0);
} else {
JCE.emitWordBE(0xf << 26 | 25 << 16 | Hi);
JCE.emitWordBE(9 << 26 | 25 << 21 | 25 << 16 | Lo);
JCE.emitWordBE(25 << 21 | 24 << 11 | 9);
JCE.emitWordBE(0);
}
sys::Memory::InvalidateInstructionCache(Addr, 16);
if (!sys::Memory::setRangeExecutable(Addr, 16))

7
lib/Target/Mips/MipsJITInfo.h
View File

@ -26,10 +26,11 @@ class MipsTargetMachine;
class MipsJITInfo : public TargetJITInfo {
bool IsPIC;
bool IsLittleEndian;
public:
explicit MipsJITInfo() :
IsPIC(false) {}
IsPIC(false), IsLittleEndian(true) {}
/// replaceMachineCodeForFunction - Make it so that calling the function
/// whose machine code is at OLD turns into a call to NEW, perhaps by
@ -58,8 +59,10 @@ class MipsJITInfo : public TargetJITInfo {
unsigned NumRelocs, unsigned char *GOTBase);
/// Initialize - Initialize internal stage for the function being JITted.
void Initialize(const MachineFunction &MF, bool isPIC) {
void Initialize(const MachineFunction &MF, bool isPIC,
bool isLittleEndian) {
IsPIC = isPIC;
IsLittleEndian = isLittleEndian;
}
};