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authorpatrick <patrick@openbsd.org>2020-08-03 15:06:44 +0000
committerpatrick <patrick@openbsd.org>2020-08-03 15:06:44 +0000
commitb64793999546ed8adebaeebd9d8345d18db8927d (patch)
tree4357c27b561d73b0e089727c6ed659f2ceff5f47 /gnu/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCCodeEmitter.cpp
parentAdd support for UTF-8 DISPLAY-HINTs with octet length. For now only (diff)
downloadwireguard-openbsd-b64793999546ed8adebaeebd9d8345d18db8927d.tar.xz
wireguard-openbsd-b64793999546ed8adebaeebd9d8345d18db8927d.zip
Remove LLVM 8.0.1 files.
Diffstat (limited to 'gnu/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCCodeEmitter.cpp')
-rw-r--r--gnu/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCCodeEmitter.cpp321
1 files changed, 0 insertions, 321 deletions
diff --git a/gnu/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCCodeEmitter.cpp b/gnu/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCCodeEmitter.cpp
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--- a/gnu/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCCodeEmitter.cpp
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@@ -1,321 +0,0 @@
-//===-- PPCMCCodeEmitter.cpp - Convert PPC code to machine code -----------===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file implements the PPCMCCodeEmitter class.
-//
-//===----------------------------------------------------------------------===//
-
-#include "MCTargetDesc/PPCFixupKinds.h"
-#include "PPCInstrInfo.h"
-#include "PPCMCCodeEmitter.h"
-#include "llvm/ADT/SmallVector.h"
-#include "llvm/ADT/Statistic.h"
-#include "llvm/ADT/Triple.h"
-#include "llvm/MC/MCFixup.h"
-#include "llvm/MC/MCInstrDesc.h"
-#include "llvm/MC/MCRegisterInfo.h"
-#include "llvm/Support/Endian.h"
-#include "llvm/Support/EndianStream.h"
-#include "llvm/Support/ErrorHandling.h"
-#include "llvm/Support/MathExtras.h"
-#include "llvm/Support/raw_ostream.h"
-#include <cassert>
-#include <cstdint>
-
-using namespace llvm;
-
-#define DEBUG_TYPE "mccodeemitter"
-
-STATISTIC(MCNumEmitted, "Number of MC instructions emitted");
-
-MCCodeEmitter *llvm::createPPCMCCodeEmitter(const MCInstrInfo &MCII,
- const MCRegisterInfo &MRI,
- MCContext &Ctx) {
- return new PPCMCCodeEmitter(MCII, Ctx);
-}
-
-unsigned PPCMCCodeEmitter::
-getDirectBrEncoding(const MCInst &MI, unsigned OpNo,
- SmallVectorImpl<MCFixup> &Fixups,
- const MCSubtargetInfo &STI) const {
- const MCOperand &MO = MI.getOperand(OpNo);
- if (MO.isReg() || MO.isImm()) return getMachineOpValue(MI, MO, Fixups, STI);
-
- // Add a fixup for the branch target.
- Fixups.push_back(MCFixup::create(0, MO.getExpr(),
- (MCFixupKind)PPC::fixup_ppc_br24));
- return 0;
-}
-
-unsigned PPCMCCodeEmitter::getCondBrEncoding(const MCInst &MI, unsigned OpNo,
- SmallVectorImpl<MCFixup> &Fixups,
- const MCSubtargetInfo &STI) const {
- const MCOperand &MO = MI.getOperand(OpNo);
- if (MO.isReg() || MO.isImm()) return getMachineOpValue(MI, MO, Fixups, STI);
-
- // Add a fixup for the branch target.
- Fixups.push_back(MCFixup::create(0, MO.getExpr(),
- (MCFixupKind)PPC::fixup_ppc_brcond14));
- return 0;
-}
-
-unsigned PPCMCCodeEmitter::
-getAbsDirectBrEncoding(const MCInst &MI, unsigned OpNo,
- SmallVectorImpl<MCFixup> &Fixups,
- const MCSubtargetInfo &STI) const {
- const MCOperand &MO = MI.getOperand(OpNo);
- if (MO.isReg() || MO.isImm()) return getMachineOpValue(MI, MO, Fixups, STI);
-
- // Add a fixup for the branch target.
- Fixups.push_back(MCFixup::create(0, MO.getExpr(),
- (MCFixupKind)PPC::fixup_ppc_br24abs));
- return 0;
-}
-
-unsigned PPCMCCodeEmitter::
-getAbsCondBrEncoding(const MCInst &MI, unsigned OpNo,
- SmallVectorImpl<MCFixup> &Fixups,
- const MCSubtargetInfo &STI) const {
- const MCOperand &MO = MI.getOperand(OpNo);
- if (MO.isReg() || MO.isImm()) return getMachineOpValue(MI, MO, Fixups, STI);
-
- // Add a fixup for the branch target.
- Fixups.push_back(MCFixup::create(0, MO.getExpr(),
- (MCFixupKind)PPC::fixup_ppc_brcond14abs));
- return 0;
-}
-
-unsigned PPCMCCodeEmitter::getImm16Encoding(const MCInst &MI, unsigned OpNo,
- SmallVectorImpl<MCFixup> &Fixups,
- const MCSubtargetInfo &STI) const {
- const MCOperand &MO = MI.getOperand(OpNo);
- if (MO.isReg() || MO.isImm()) return getMachineOpValue(MI, MO, Fixups, STI);
-
- // Add a fixup for the immediate field.
- Fixups.push_back(MCFixup::create(IsLittleEndian? 0 : 2, MO.getExpr(),
- (MCFixupKind)PPC::fixup_ppc_half16));
- return 0;
-}
-
-unsigned PPCMCCodeEmitter::getMemRIEncoding(const MCInst &MI, unsigned OpNo,
- SmallVectorImpl<MCFixup> &Fixups,
- const MCSubtargetInfo &STI) const {
- // Encode (imm, reg) as a memri, which has the low 16-bits as the
- // displacement and the next 5 bits as the register #.
- assert(MI.getOperand(OpNo+1).isReg());
- unsigned RegBits = getMachineOpValue(MI, MI.getOperand(OpNo+1), Fixups, STI) << 16;
-
- const MCOperand &MO = MI.getOperand(OpNo);
- if (MO.isImm())
- return (getMachineOpValue(MI, MO, Fixups, STI) & 0xFFFF) | RegBits;
-
- // Add a fixup for the displacement field.
- Fixups.push_back(MCFixup::create(IsLittleEndian? 0 : 2, MO.getExpr(),
- (MCFixupKind)PPC::fixup_ppc_half16));
- return RegBits;
-}
-
-unsigned PPCMCCodeEmitter::getMemRIXEncoding(const MCInst &MI, unsigned OpNo,
- SmallVectorImpl<MCFixup> &Fixups,
- const MCSubtargetInfo &STI) const {
- // Encode (imm, reg) as a memrix, which has the low 14-bits as the
- // displacement and the next 5 bits as the register #.
- assert(MI.getOperand(OpNo+1).isReg());
- unsigned RegBits = getMachineOpValue(MI, MI.getOperand(OpNo+1), Fixups, STI) << 14;
-
- const MCOperand &MO = MI.getOperand(OpNo);
- if (MO.isImm())
- return ((getMachineOpValue(MI, MO, Fixups, STI) >> 2) & 0x3FFF) | RegBits;
-
- // Add a fixup for the displacement field.
- Fixups.push_back(MCFixup::create(IsLittleEndian? 0 : 2, MO.getExpr(),
- (MCFixupKind)PPC::fixup_ppc_half16ds));
- return RegBits;
-}
-
-unsigned PPCMCCodeEmitter::getMemRIX16Encoding(const MCInst &MI, unsigned OpNo,
- SmallVectorImpl<MCFixup> &Fixups,
- const MCSubtargetInfo &STI) const {
- // Encode (imm, reg) as a memrix16, which has the low 12-bits as the
- // displacement and the next 5 bits as the register #.
- assert(MI.getOperand(OpNo+1).isReg());
- unsigned RegBits = getMachineOpValue(MI, MI.getOperand(OpNo+1), Fixups, STI) << 12;
-
- const MCOperand &MO = MI.getOperand(OpNo);
- if (MO.isImm()) {
- assert(!(MO.getImm() % 16) &&
- "Expecting an immediate that is a multiple of 16");
- return ((getMachineOpValue(MI, MO, Fixups, STI) >> 4) & 0xFFF) | RegBits;
- }
-
- // Otherwise add a fixup for the displacement field.
- Fixups.push_back(MCFixup::create(IsLittleEndian? 0 : 2, MO.getExpr(),
- (MCFixupKind)PPC::fixup_ppc_half16ds));
- return RegBits;
-}
-
-unsigned PPCMCCodeEmitter::getSPE8DisEncoding(const MCInst &MI, unsigned OpNo,
- SmallVectorImpl<MCFixup> &Fixups,
- const MCSubtargetInfo &STI)
- const {
- // Encode (imm, reg) as a spe8dis, which has the low 5-bits of (imm / 8)
- // as the displacement and the next 5 bits as the register #.
- assert(MI.getOperand(OpNo+1).isReg());
- uint32_t RegBits = getMachineOpValue(MI, MI.getOperand(OpNo+1), Fixups, STI) << 5;
-
- const MCOperand &MO = MI.getOperand(OpNo);
- assert(MO.isImm());
- uint32_t Imm = getMachineOpValue(MI, MO, Fixups, STI) >> 3;
- return reverseBits(Imm | RegBits) >> 22;
-}
-
-unsigned PPCMCCodeEmitter::getSPE4DisEncoding(const MCInst &MI, unsigned OpNo,
- SmallVectorImpl<MCFixup> &Fixups,
- const MCSubtargetInfo &STI)
- const {
- // Encode (imm, reg) as a spe4dis, which has the low 5-bits of (imm / 4)
- // as the displacement and the next 5 bits as the register #.
- assert(MI.getOperand(OpNo+1).isReg());
- uint32_t RegBits = getMachineOpValue(MI, MI.getOperand(OpNo+1), Fixups, STI) << 5;
-
- const MCOperand &MO = MI.getOperand(OpNo);
- assert(MO.isImm());
- uint32_t Imm = getMachineOpValue(MI, MO, Fixups, STI) >> 2;
- return reverseBits(Imm | RegBits) >> 22;
-}
-
-unsigned PPCMCCodeEmitter::getSPE2DisEncoding(const MCInst &MI, unsigned OpNo,
- SmallVectorImpl<MCFixup> &Fixups,
- const MCSubtargetInfo &STI)
- const {
- // Encode (imm, reg) as a spe2dis, which has the low 5-bits of (imm / 2)
- // as the displacement and the next 5 bits as the register #.
- assert(MI.getOperand(OpNo+1).isReg());
- uint32_t RegBits = getMachineOpValue(MI, MI.getOperand(OpNo+1), Fixups, STI) << 5;
-
- const MCOperand &MO = MI.getOperand(OpNo);
- assert(MO.isImm());
- uint32_t Imm = getMachineOpValue(MI, MO, Fixups, STI) >> 1;
- return reverseBits(Imm | RegBits) >> 22;
-}
-
-unsigned PPCMCCodeEmitter::getTLSRegEncoding(const MCInst &MI, unsigned OpNo,
- SmallVectorImpl<MCFixup> &Fixups,
- const MCSubtargetInfo &STI) const {
- const MCOperand &MO = MI.getOperand(OpNo);
- if (MO.isReg()) return getMachineOpValue(MI, MO, Fixups, STI);
-
- // Add a fixup for the TLS register, which simply provides a relocation
- // hint to the linker that this statement is part of a relocation sequence.
- // Return the thread-pointer register's encoding.
- Fixups.push_back(MCFixup::create(0, MO.getExpr(),
- (MCFixupKind)PPC::fixup_ppc_nofixup));
- const Triple &TT = STI.getTargetTriple();
- bool isPPC64 = TT.getArch() == Triple::ppc64 || TT.getArch() == Triple::ppc64le;
- return CTX.getRegisterInfo()->getEncodingValue(isPPC64 ? PPC::X13 : PPC::R2);
-}
-
-unsigned PPCMCCodeEmitter::getTLSCallEncoding(const MCInst &MI, unsigned OpNo,
- SmallVectorImpl<MCFixup> &Fixups,
- const MCSubtargetInfo &STI) const {
- // For special TLS calls, we need two fixups; one for the branch target
- // (__tls_get_addr), which we create via getDirectBrEncoding as usual,
- // and one for the TLSGD or TLSLD symbol, which is emitted here.
- const MCOperand &MO = MI.getOperand(OpNo+1);
- Fixups.push_back(MCFixup::create(0, MO.getExpr(),
- (MCFixupKind)PPC::fixup_ppc_nofixup));
- return getDirectBrEncoding(MI, OpNo, Fixups, STI);
-}
-
-unsigned PPCMCCodeEmitter::
-get_crbitm_encoding(const MCInst &MI, unsigned OpNo,
- SmallVectorImpl<MCFixup> &Fixups,
- const MCSubtargetInfo &STI) const {
- const MCOperand &MO = MI.getOperand(OpNo);
- assert((MI.getOpcode() == PPC::MTOCRF || MI.getOpcode() == PPC::MTOCRF8 ||
- MI.getOpcode() == PPC::MFOCRF || MI.getOpcode() == PPC::MFOCRF8) &&
- (MO.getReg() >= PPC::CR0 && MO.getReg() <= PPC::CR7));
- return 0x80 >> CTX.getRegisterInfo()->getEncodingValue(MO.getReg());
-}
-
-// Get the index for this operand in this instruction. This is needed for
-// computing the register number in PPCInstrInfo::getRegNumForOperand() for
-// any instructions that use a different numbering scheme for registers in
-// different operands.
-static unsigned getOpIdxForMO(const MCInst &MI, const MCOperand &MO) {
- for (unsigned i = 0; i < MI.getNumOperands(); i++) {
- const MCOperand &Op = MI.getOperand(i);
- if (&Op == &MO)
- return i;
- }
- llvm_unreachable("This operand is not part of this instruction");
- return ~0U; // Silence any warnings about no return.
-}
-
-unsigned PPCMCCodeEmitter::
-getMachineOpValue(const MCInst &MI, const MCOperand &MO,
- SmallVectorImpl<MCFixup> &Fixups,
- const MCSubtargetInfo &STI) const {
- if (MO.isReg()) {
- // MTOCRF/MFOCRF should go through get_crbitm_encoding for the CR operand.
- // The GPR operand should come through here though.
- assert((MI.getOpcode() != PPC::MTOCRF && MI.getOpcode() != PPC::MTOCRF8 &&
- MI.getOpcode() != PPC::MFOCRF && MI.getOpcode() != PPC::MFOCRF8) ||
- MO.getReg() < PPC::CR0 || MO.getReg() > PPC::CR7);
- unsigned OpNo = getOpIdxForMO(MI, MO);
- unsigned Reg =
- PPCInstrInfo::getRegNumForOperand(MCII.get(MI.getOpcode()),
- MO.getReg(), OpNo);
- return CTX.getRegisterInfo()->getEncodingValue(Reg);
- }
-
- assert(MO.isImm() &&
- "Relocation required in an instruction that we cannot encode!");
- return MO.getImm();
-}
-
-void PPCMCCodeEmitter::encodeInstruction(
- const MCInst &MI, raw_ostream &OS, SmallVectorImpl<MCFixup> &Fixups,
- const MCSubtargetInfo &STI) const {
- verifyInstructionPredicates(MI,
- computeAvailableFeatures(STI.getFeatureBits()));
-
- uint64_t Bits = getBinaryCodeForInstr(MI, Fixups, STI);
-
- // Output the constant in big/little endian byte order.
- unsigned Size = getInstSizeInBytes(MI);
- support::endianness E = IsLittleEndian ? support::little : support::big;
- switch (Size) {
- case 0:
- break;
- case 4:
- support::endian::write<uint32_t>(OS, Bits, E);
- break;
- case 8:
- // If we emit a pair of instructions, the first one is
- // always in the top 32 bits, even on little-endian.
- support::endian::write<uint32_t>(OS, Bits >> 32, E);
- support::endian::write<uint32_t>(OS, Bits, E);
- break;
- default:
- llvm_unreachable("Invalid instruction size");
- }
-
- ++MCNumEmitted; // Keep track of the # of mi's emitted.
-}
-
-// Get the number of bytes used to encode the given MCInst.
-unsigned PPCMCCodeEmitter::getInstSizeInBytes(const MCInst &MI) const {
- unsigned Opcode = MI.getOpcode();
- const MCInstrDesc &Desc = MCII.get(Opcode);
- return Desc.getSize();
-}
-
-#define ENABLE_INSTR_PREDICATE_VERIFIER
-#include "PPCGenMCCodeEmitter.inc"