From: Gabe Black <gblack@eecs.umich.edu>
Date: Mon, 9 Apr 2007 01:08:05 +0000 (+0000)
Subject: Accidentally didn't save when moving the specialization code out of here.
X-Git-Tag: m5_2.0_beta3~47
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=85f9213b8ae93a1cf9c712415668efb2d053638b;p=gem5.git

Accidentally didn't save when moving the specialization code out of here.

--HG--
extra : convert_revision : 1ffe0c497e10fef1eb84b3c97c00b98d820fbb97
---

diff --git a/src/arch/x86/isa/microasm.isa b/src/arch/x86/isa/microasm.isa
index 592941d04..23567aae9 100644
--- a/src/arch/x86/isa/microasm.isa
+++ b/src/arch/x86/isa/microasm.isa
@@ -55,122 +55,6 @@
 //
 // Authors: Gabe Black
 
-////////////////////////////////////////////////////////////////////
-//
-//  Code to "specialize" a microcode sequence to use a particular
-//  variety of operands
-//
-
-let {{
-    # This code builds up a decode block which decodes based on switchval.
-    # vals is a dict which matches case values with what should be decoded to.
-    # builder is called on the exploded contents of "vals" values to generate
-    # whatever code should be used.
-    def doSplitDecode(name, Name, builder, switchVal, vals, default = None):
-        header_output = ''
-        decoder_output = ''
-        decode_block = 'switch(%s) {\n' % switchVal
-        exec_output = ''
-        for (val, todo) in vals.items():
-            (new_header_output,
-             new_decoder_output,
-             new_decode_block,
-             new_exec_output) = builder(name, Name, *todo)
-            header_output += new_header_output
-            decoder_output += new_decoder_output
-            decode_block += '\tcase %s: %s\n' % (val, new_decode_block)
-            exec_output += new_exec_output
-        if default:
-            (new_header_output,
-             new_decoder_output,
-             new_decode_block,
-             new_exec_output) = builder(name, Name, *default)
-            header_output += new_header_output
-            decoder_output += new_decoder_output
-            decode_block += '\tdefault: %s\n' % new_decode_block
-            exec_output += new_exec_output
-        decode_block += '}\n'
-        return (header_output, decoder_output, decode_block, exec_output)
-}};
-
-let {{
-    class OpType(object):
-        parser = re.compile(r"(?P<tag>[A-Z][A-Z]*)(?P<size>[a-z][a-z]*)|(r(?P<reg>[A-Za-z0-9][A-Za-z0-9]*))")
-        def __init__(self, opTypeString):
-            match = OpType.parser.search(opTypeString)
-            if match == None:
-                raise Exception, "Problem parsing operand type %s" % opTypeString
-            self.reg = match.group("reg")
-            self.tag = match.group("tag")
-            self.size = match.group("size")
-
-    # This function specializes the given piece of code to use a particular
-    # set of argument types described by "opTypes". These are "implemented"
-    # in reverse order.
-    def specializeInst(name, Name, code, opTypes):
-        opNum = len(opTypes) - 1
-        while len(opTypes):
-            # print "Building a composite op with tags", opTypes
-            # print "And code", code
-            opNum = len(opTypes) - 1
-            # A regular expression to find the operand placeholders we're
-            # interested in.
-            opRe = re.compile("\\^(?P<operandNum>%d)(?=[^0-9]|$)" % opNum)
-
-            # Parse the operand type strign we're working with
-            opType = OpType(opTypes[opNum])
-
-            if opType.reg:
-                #Figure out what to do with fixed register operands
-                if opType.reg in ("Ax", "Bx", "Cx", "Dx"):
-                    code = opRe.sub("%%{INTREG_R%s}" % opType.reg.upper(), code)
-                elif opType.reg == "Al":
-                    # We need a way to specify register width
-                    code = opRe.sub("%{INTREG_RAX}", code)
-                else:
-                    print "Didn't know how to encode fixed register %s!" % opType.reg
-            elif opType.tag == None or opType.size == None:
-                raise Exception, "Problem parsing operand tag: %s" % opType.tag
-            elif opType.tag in ("C", "D", "G", "P", "S", "T", "V"):
-                # Use the "reg" field of the ModRM byte to select the register
-                code = opRe.sub("%{(uint8_t)MODRM_REG}", code)
-            elif opType.tag in ("E", "Q", "W"):
-                # This might refer to memory or to a register. We need to
-                # divide it up farther.
-                regCode = opRe.sub("%{(uint8_t)MODRM_RM}", code)
-                regTypes = copy.copy(opTypes)
-                regTypes.pop(-1)
-                # This needs to refer to memory, but we'll fill in the details
-                # later. It needs to take into account unaligned memory
-                # addresses.
-                memCode = opRe.sub("%0", code)
-                memTypes = copy.copy(opTypes)
-                memTypes.pop(-1)
-                return doSplitDecode(name, Name, specializeInst, "MODRM_MOD",
-                    {"3" : (regCode, regTypes)}, (memCode, memTypes))
-            elif opType.tag in ("I", "J"):
-                # Immediates are already in the instruction, so don't leave in
-                # those parameters
-                code = opRe.sub("${IMMEDIATE}", code)
-            elif opType.tag == "M":
-                # This needs to refer to memory, but we'll fill in the details
-                # later. It needs to take into account unaligned memory
-                # addresses.
-                code = opRe.sub("%0", code)
-            elif opType.tag in ("PR", "R", "VR"):
-                # There should probably be a check here to verify that mod
-                # is equal to 11b
-                code = opRe.sub("%{(uint8_t)MODRM_RM}", code)
-            else:
-                raise Exception, "Unrecognized tag %s." % opType.tag
-            opTypes.pop(-1)
-
-        # At this point, we've built up "code" to have all the necessary extra
-        # instructions needed to implement whatever types of operands were
-        # specified. Now we'll assemble it it into a StaticInst.
-        return assembleMicro(name, Name, code)
-}};
-
 ////////////////////////////////////////////////////////////////////
 //
 //  The microcode assembler