diff options
Diffstat (limited to 'llvm/lib/Target/X86/InstPrinter/X86InstPrinterCommon.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/InstPrinter/X86InstPrinterCommon.cpp | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/InstPrinter/X86InstPrinterCommon.cpp b/llvm/lib/Target/X86/InstPrinter/X86InstPrinterCommon.cpp new file mode 100644 index 00000000000..432cd47ae49 --- /dev/null +++ b/llvm/lib/Target/X86/InstPrinter/X86InstPrinterCommon.cpp @@ -0,0 +1,142 @@ +//===--- X86InstPrinterCommon.cpp - X86 assembly instruction printing -----===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file includes common code for rendering MCInst instances as Intel-style +// and Intel-style assembly. +// +//===----------------------------------------------------------------------===// + +#include "X86InstPrinterCommon.h" +#include "MCTargetDesc/X86BaseInfo.h" +#include "llvm/MC/MCExpr.h" +#include "llvm/MC/MCInst.h" +#include "llvm/MC/MCInstrDesc.h" +#include "llvm/MC/MCInstrInfo.h" +#include "llvm/Support/raw_ostream.h" +#include "llvm/Support/Casting.h" +#include <cstdint> +#include <cassert> + +using namespace llvm; + +void X86InstPrinterCommon::printSSEAVXCC(const MCInst *MI, unsigned Op, + raw_ostream &O) { + int64_t Imm = MI->getOperand(Op).getImm(); + switch (Imm) { + default: llvm_unreachable("Invalid ssecc/avxcc argument!"); + case 0: O << "eq"; break; + case 1: O << "lt"; break; + case 2: O << "le"; break; + case 3: O << "unord"; break; + case 4: O << "neq"; break; + case 5: O << "nlt"; break; + case 6: O << "nle"; break; + case 7: O << "ord"; break; + case 8: O << "eq_uq"; break; + case 9: O << "nge"; break; + case 0xa: O << "ngt"; break; + case 0xb: O << "false"; break; + case 0xc: O << "neq_oq"; break; + case 0xd: O << "ge"; break; + case 0xe: O << "gt"; break; + case 0xf: O << "true"; break; + case 0x10: O << "eq_os"; break; + case 0x11: O << "lt_oq"; break; + case 0x12: O << "le_oq"; break; + case 0x13: O << "unord_s"; break; + case 0x14: O << "neq_us"; break; + case 0x15: O << "nlt_uq"; break; + case 0x16: O << "nle_uq"; break; + case 0x17: O << "ord_s"; break; + case 0x18: O << "eq_us"; break; + case 0x19: O << "nge_uq"; break; + case 0x1a: O << "ngt_uq"; break; + case 0x1b: O << "false_os"; break; + case 0x1c: O << "neq_os"; break; + case 0x1d: O << "ge_oq"; break; + case 0x1e: O << "gt_oq"; break; + case 0x1f: O << "true_us"; break; + } +} + +void X86InstPrinterCommon::printXOPCC(const MCInst *MI, unsigned Op, + raw_ostream &O) { + int64_t Imm = MI->getOperand(Op).getImm(); + switch (Imm) { + default: llvm_unreachable("Invalid xopcc argument!"); + case 0: O << "lt"; break; + case 1: O << "le"; break; + case 2: O << "gt"; break; + case 3: O << "ge"; break; + case 4: O << "eq"; break; + case 5: O << "neq"; break; + case 6: O << "false"; break; + case 7: O << "true"; break; + } +} + +void X86InstPrinterCommon::printRoundingControl(const MCInst *MI, unsigned Op, + raw_ostream &O) { + int64_t Imm = MI->getOperand(Op).getImm() & 0x3; + switch (Imm) { + case 0: O << "{rn-sae}"; break; + case 1: O << "{rd-sae}"; break; + case 2: O << "{ru-sae}"; break; + case 3: O << "{rz-sae}"; break; + } +} + +/// printPCRelImm - This is used to print an immediate value that ends up +/// being encoded as a pc-relative value (e.g. for jumps and calls). In +/// Intel-style these print slightly differently than normal immediates. +/// for example, a $ is not emitted. +void X86InstPrinterCommon::printPCRelImm(const MCInst *MI, unsigned OpNo, + raw_ostream &O) { + const MCOperand &Op = MI->getOperand(OpNo); + if (Op.isImm()) + O << formatImm(Op.getImm()); + else { + assert(Op.isExpr() && "unknown pcrel immediate operand"); + // If a symbolic branch target was added as a constant expression then print + // that address in hex. + const MCConstantExpr *BranchTarget = dyn_cast<MCConstantExpr>(Op.getExpr()); + int64_t Address; + if (BranchTarget && BranchTarget->evaluateAsAbsolute(Address)) { + O << formatHex((uint64_t)Address); + } else { + // Otherwise, just print the expression. + Op.getExpr()->print(O, &MAI); + } + } +} + +void X86InstPrinterCommon::printOptionalSegReg(const MCInst *MI, unsigned OpNo, + raw_ostream &O) { + if (MI->getOperand(OpNo).getReg()) { + printOperand(MI, OpNo, O); + O << ':'; + } +} + +void X86InstPrinterCommon::printInstFlags(const MCInst *MI, raw_ostream &O) { + const MCInstrDesc &Desc = MII.get(MI->getOpcode()); + uint64_t TSFlags = Desc.TSFlags; + unsigned Flags = MI->getFlags(); + + if ((TSFlags & X86II::LOCK) || (Flags & X86::IP_HAS_LOCK)) + O << "\tlock\t"; + + if ((TSFlags & X86II::NOTRACK) || (Flags & X86::IP_HAS_NOTRACK)) + O << "\tnotrack\t"; + + if (Flags & X86::IP_HAS_REPEAT_NE) + O << "\trepne\t"; + else if (Flags & X86::IP_HAS_REPEAT) + O << "\trep\t"; +} |
