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| author | 2020-08-03 15:06:44 +0000 | |
|---|---|---|
| committer | 2020-08-03 15:06:44 +0000 | |
| commit | b64793999546ed8adebaeebd9d8345d18db8927d (patch) | |
| tree | 4357c27b561d73b0e089727c6ed659f2ceff5f47 /gnu/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCCodeEmitter.cpp | |
| parent | Add support for UTF-8 DISPLAY-HINTs with octet length. For now only (diff) | |
| download | wireguard-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.cpp | 321 |
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 deleted file mode 100644 index 8c15ade6f9c..00000000000 --- a/gnu/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCCodeEmitter.cpp +++ /dev/null @@ -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" |
