| // -*- mode:c++ -*- |
| |
| // Copyright (c) 2007-2008 The Hewlett-Packard Development Company |
| // All rights reserved. |
| // |
| // The license below extends only to copyright in the software and shall |
| // not be construed as granting a license to any other intellectual |
| // property including but not limited to intellectual property relating |
| // to a hardware implementation of the functionality of the software |
| // licensed hereunder. You may use the software subject to the license |
| // terms below provided that you ensure that this notice is replicated |
| // unmodified and in its entirety in all distributions of the software, |
| // modified or unmodified, in source code or in binary form. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer; |
| // redistributions in binary form must reproduce the above copyright |
| // notice, this list of conditions and the following disclaimer in the |
| // documentation and/or other materials provided with the distribution; |
| // neither the name of the copyright holders nor the names of its |
| // contributors may be used to endorse or promote products derived from |
| // this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| //Include the definitions of the micro ops. |
| //These are python representations of static insts which stand on their own |
| //and make up an internal instruction set. They are used by the micro |
| //assembler. |
| ##include "microops/microops.isa" |
| |
| //Include code to build macroops in both C++ and python. |
| ##include "macroop.isa" |
| |
| //Include code to fill out the microcode ROM in both C++ and python. |
| ##include "rom.isa" |
| |
| let {{ |
| import sys |
| sys.path[0:0] = ["src/arch/x86/isa/"] |
| from insts import microcode |
| # print microcode |
| from micro_asm import MicroAssembler, RomMacroop |
| mainRom = X86MicrocodeRom('main ROM') |
| assembler = MicroAssembler(X86Macroop, microopClasses, mainRom, RomMacroop) |
| |
| def gpRegIdx(idx): |
| return "X86ISA::GpRegIndex(%s)" % idx |
| def fpRegIdx(idx): |
| return "X86ISA::FpRegIndex(%s)" % idx |
| def ctrlRegIdx(idx): |
| return "X86ISA::CtrlRegIndex(%s)" % idx |
| def crRegIdx(idx): |
| return "X86ISA::CrRegIndex(%s)" % idx |
| def drRegIdx(idx): |
| return "X86ISA::DbgRegIndex(%s)" % idx |
| def segRegIdx(idx): |
| return "X86ISA::SegRegIndex(%s)" % idx |
| |
| assembler.symbols["gpRegIdx"] = gpRegIdx |
| assembler.symbols["fpRegIdx"] = fpRegIdx |
| assembler.symbols["ctrlRegIdx"] = ctrlRegIdx |
| assembler.symbols["crRegIdx"] = crRegIdx |
| assembler.symbols["drRegIdx"] = drRegIdx |
| assembler.symbols["segRegIdx"] = segRegIdx |
| |
| # Add in symbols for the microcode registers |
| for num in range(16): |
| assembler.symbols["t%d" % num] = gpRegIdx("INTREG_MICRO(%d)" % num) |
| for num in range(8): |
| assembler.symbols["ufp%d" % num] = \ |
| fpRegIdx("FLOATREG_MICROFP(%d)" % num) |
| # Add in symbols for the segment descriptor registers |
| for letter in ("C", "D", "E", "F", "G", "H", "S"): |
| assembler.symbols["%ss" % letter.lower()] = \ |
| segRegIdx("SEGMENT_REG_%sS" % letter) |
| |
| # Add in symbols for the various checks of segment selectors. |
| for check in ("NoCheck", "CSCheck", "CallGateCheck", "IntGateCheck", |
| "SoftIntGateCheck", "SSCheck", "IretCheck", "IntCSCheck", |
| "TRCheck", "TSSCheck", "InGDTCheck", "LDTCheck"): |
| assembler.symbols[check] = "Seg%s" % check |
| |
| for reg in ("TR", "IDTR"): |
| assembler.symbols[reg.lower()] = segRegIdx("SYS_SEGMENT_REG_%s" % reg) |
| |
| for reg in ("TSL", "TSG"): |
| assembler.symbols[reg.lower()] = segRegIdx("SEGMENT_REG_%s" % reg) |
| |
| # Miscellaneous symbols |
| symbols = { |
| "reg" : gpRegIdx("env.reg"), |
| "cr" : crRegIdx("env.reg"), |
| "dr" : drRegIdx("env.reg"), |
| "sr" : segRegIdx("env.reg"), |
| "xmml" : fpRegIdx("FLOATREG_XMM_LOW(env.reg)"), |
| "xmmh" : fpRegIdx("FLOATREG_XMM_HIGH(env.reg)"), |
| "regm" : gpRegIdx("env.regm"), |
| "crm" : crRegIdx("env.regm"), |
| "drm" : drRegIdx("env.regm"), |
| "srm" : segRegIdx("env.regm"), |
| "xmmlm" : fpRegIdx("FLOATREG_XMM_LOW(env.regm)"), |
| "xmmhm" : fpRegIdx("FLOATREG_XMM_HIGH(env.regm)"), |
| "mmx" : fpRegIdx("FLOATREG_MMX(env.reg)"), |
| "mmxm" : fpRegIdx("FLOATREG_MMX(env.regm)"), |
| "imm" : "adjustedImm", |
| "disp" : "adjustedDisp", |
| "seg" : segRegIdx("env.seg"), |
| "scale" : "env.scale", |
| "index" : gpRegIdx("env.index"), |
| "base" : gpRegIdx("env.base"), |
| "dsz" : "env.dataSize", |
| "asz" : "env.addressSize", |
| "ssz" : "env.stackSize" |
| } |
| assembler.symbols.update(symbols) |
| |
| assembler.symbols["ldsz"] = \ |
| "((env.dataSize == 8) ? 3 : (env.dataSize == 4) ? 2 : 1)" |
| |
| assembler.symbols["lasz"] = \ |
| "((env.addressSize == 8) ? 3 : (env.addressSize == 4) ? 2 : 1)" |
| |
| assembler.symbols["lssz"] = \ |
| "((env.stackSize == 8) ? 3 : (env.stackSize == 4) ? 2 : 1)" |
| |
| # Short hand for common scale-index-base combinations. |
| assembler.symbols["sib"] = \ |
| [symbols["scale"], symbols["index"], symbols["base"]] |
| assembler.symbols["riprel"] = \ |
| ["1", assembler.symbols["t0"], assembler.symbols["t7"]] |
| |
| # This segment selects an internal address space mapped to MSRs, |
| # CPUID info, etc. |
| assembler.symbols["intseg"] = segRegIdx("SEGMENT_REG_MS") |
| # This segment always has base 0, and doesn't imply any special handling |
| # like the internal segment above |
| assembler.symbols["flatseg"] = segRegIdx("SEGMENT_REG_LS") |
| |
| for reg in ('ax', 'bx', 'cx', 'dx', 'sp', 'bp', 'si', 'di', \ |
| '8', '9', '10', '11', '12', '13', '14', '15'): |
| assembler.symbols["r%s" % reg] = \ |
| gpRegIdx("INTREG_R%s" % reg.upper()) |
| |
| for reg in ('ah', 'bh', 'ch', 'dh'): |
| assembler.symbols[reg] = \ |
| gpRegIdx("X86ISA::INTREG_FOLDED(INTREG_%s, IntFoldBit)" % |
| reg.upper()) |
| |
| for reg in range(16): |
| assembler.symbols["cr%d" % reg] = crRegIdx("%d" % reg) |
| |
| for flag in ('CF', 'PF', 'ECF', 'AF', 'EZF', 'ZF', 'SF', 'OF', \ |
| 'TF', 'IF', 'NT', 'RF', 'VM', 'AC', 'VIF', 'VIP', 'ID'): |
| assembler.symbols[flag] = flag + "Bit" |
| |
| for cond in ('True', 'False', 'ECF', 'EZF', 'SZnZF', |
| 'MSTRZ', 'STRZ', 'MSTRC', |
| 'OF', 'CF', 'ZF', 'CvZF', |
| 'SF', 'PF', 'SxOF', 'SxOvZF'): |
| assembler.symbols["C%s" % cond] = "condition_tests::%s" % cond |
| assembler.symbols["nC%s" % cond] = "condition_tests::Not%s" % cond |
| assembler.symbols["CSTRZnEZF"] = "condition_tests::STRZnEZF" |
| assembler.symbols["CSTRnZnEZF"] = "condition_tests::STRnZnEZF" |
| |
| assembler.symbols["CTrue"] = "condition_tests::True" |
| assembler.symbols["CFalse"] = "condition_tests::False" |
| |
| for reg in ('sysenter_cs', 'sysenter_esp', 'sysenter_eip', |
| 'star', 'lstar', 'cstar', 'sf_mask', |
| 'kernel_gs_base'): |
| assembler.symbols[reg] = ctrlRegIdx("MISCREG_%s" % reg.upper()) |
| |
| for flag in ('Scalar', 'MultHi', 'Signed'): |
| assembler.symbols[flag] = 'Media%sOp' % flag |
| |
| # Code literal which forces a default 64 bit operand size in 64 bit mode. |
| assembler.symbols["oszIn64Override"] = ''' |
| if (machInst.mode.submode == SixtyFourBitMode && |
| env.dataSize == 4) |
| env.dataSize = 8; |
| ''' |
| |
| assembler.symbols["maxOsz"] = ''' |
| if (machInst.mode.submode == SixtyFourBitMode) |
| env.dataSize = 8; |
| else |
| env.dataSize = 4; |
| ''' |
| |
| assembler.symbols["clampOsz"] = ''' |
| if (env.dataSize == 2) |
| env.dataSize = 4; |
| ''' |
| |
| def trimImm(width): |
| return "adjustedImm = adjustedImm & mask(%s);" % width |
| |
| assembler.symbols["trimImm"] = trimImm |
| |
| def labeler(labelStr): |
| return "label_%s" % labelStr |
| |
| assembler.symbols["label"] = labeler |
| |
| def rom_labeler(labelStr): |
| return "romMicroPC(rom_labels::extern_label_%s)" % labelStr |
| |
| assembler.symbols["rom_label"] = rom_labeler |
| |
| def rom_local_labeler(labelStr): |
| return "romMicroPC(rom_labels::label_%s)" % labelStr |
| |
| assembler.symbols["rom_local_label"] = rom_local_labeler |
| |
| def stack_index(index): |
| return fpRegIdx("NUM_FLOATREGS + (((%s) + 8) %% 8)" % index) |
| |
| assembler.symbols["st"] = stack_index |
| assembler.symbols["sti"] = stack_index("env.reg") |
| assembler.symbols["stim"] = stack_index("env.regm") |
| |
| assembler.symbols["fsw"] = ctrlRegIdx("MISCREG_FSW") |
| assembler.symbols["fcw"] = ctrlRegIdx("MISCREG_FCW") |
| assembler.symbols["ftw"] = ctrlRegIdx("MISCREG_FTW") |
| |
| macroopDict = assembler.assemble(microcode) |
| |
| decoder_output += mainRom.getDefinition() |
| header_output += mainRom.getDeclaration() |
| }}; |
