diff options
Diffstat (limited to 'src/arch/x86/isa/formats')
| -rw-r--r-- | src/arch/x86/isa/formats/formats.isa | 4 | ||||
| -rw-r--r-- | src/arch/x86/isa/formats/string.isa | 88 |
2 files changed, 92 insertions, 0 deletions
diff --git a/src/arch/x86/isa/formats/formats.isa b/src/arch/x86/isa/formats/formats.isa index 1e7bb4a74..6906413c0 100644 --- a/src/arch/x86/isa/formats/formats.isa +++ b/src/arch/x86/isa/formats/formats.isa @@ -99,6 +99,10 @@ //thing on a variety of inputs ##include "multi.isa" +//Include a format which implements an extra layer of decoding to handle the +//repe and repne prefixes +##include "string.isa" + //Include a format which makes instructions who's sole purpose is to generate //a syscall. ##include "syscall.isa" diff --git a/src/arch/x86/isa/formats/string.isa b/src/arch/x86/isa/formats/string.isa new file mode 100644 index 000000000..cd182ff62 --- /dev/null +++ b/src/arch/x86/isa/formats/string.isa @@ -0,0 +1,88 @@ +// -*- mode:c++ -*- + +// Copyright (c) 2007 The Hewlett-Packard Development Company +// All rights reserved. +// +// Redistribution and use of this software in source and binary forms, +// with or without modification, are permitted provided that the +// following conditions are met: +// +// The software must be used only for Non-Commercial Use which means any +// use which is NOT directed to receiving any direct monetary +// compensation for, or commercial advantage from such use. Illustrative +// examples of non-commercial use are academic research, personal study, +// teaching, education and corporate research & development. +// Illustrative examples of commercial use are distributing products for +// commercial advantage and providing services using the software for +// commercial advantage. +// +// If you wish to use this software or functionality therein that may be +// covered by patents for commercial use, please contact: +// Director of Intellectual Property Licensing +// Office of Strategy and Technology +// Hewlett-Packard Company +// 1501 Page Mill Road +// Palo Alto, California 94304 +// +// 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 HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. No right of +// sublicense is granted herewith. Derivatives of the software and +// output created using the software may be prepared, but only for +// Non-Commercial Uses. Derivatives of the software may be shared with +// others provided: (i) the others agree to abide by the list of +// conditions herein which includes the Non-Commercial Use restrictions; +// and (ii) such Derivatives of the software include the above copyright +// notice to acknowledge the contribution from this software where +// applicable, this list of conditions and the disclaimer below. +// +// 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. +// +// Authors: Gabe Black + +////////////////////////////////////////////////////////////////////////// +// +// String Instructions +// +////////////////////////////////////////////////////////////////////////// + +def format StringInst(*opTypeSet) {{ + allBlocks = OutputBlocks() + + regBlocks = specializeInst(Name, list(opTypeSet), EmulEnv()) + eBlocks = specializeInst(Name + "_E", list(opTypeSet), EmulEnv()) + nBlocks = specializeInst(Name + "_N", list(opTypeSet), EmulEnv()) + + for blocks in (regBlocks, eBlocks, nBlocks): + allBlocks.header_output += blocks.header_output + allBlocks.decoder_output += blocks.decoder_output + allBlocks.exec_output += blocks.exec_output + + allBlocks.decode_block = ''' + if (LEGACY_REP) { + %s + } else if (LEGACY_REPNE) { + %s + } else { + %s + } + ''' % (eBlocks.decode_block, nBlocks.decode_block, regBlocks.decode_block) + + (header_output, decoder_output, + decode_block, exec_output) = allBlocks.makeList() +}}; |