specialize.isa (4348:5c21bdb46e6d) specialize.isa (4371:c5003760793e)
1// -*- mode:c++ -*-
2
3// Copyright (c) 2007 The Hewlett-Packard Development Company
4// All rights reserved.
5//
6// Redistribution and use of this software in source and binary forms,
7// with or without modification, are permitted provided that the
8// following conditions are met:

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62//
63
64let {{
65 # This code builds up a decode block which decodes based on switchval.
66 # vals is a dict which matches case values with what should be decoded to.
67 # builder is called on the exploded contents of "vals" values to generate
68 # whatever code should be used.
69 def doSplitDecode(name, Name, builder, switchVal, vals, default = None):
1// -*- mode:c++ -*-
2
3// Copyright (c) 2007 The Hewlett-Packard Development Company
4// All rights reserved.
5//
6// Redistribution and use of this software in source and binary forms,
7// with or without modification, are permitted provided that the
8// following conditions are met:

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62//
63
64let {{
65 # This code builds up a decode block which decodes based on switchval.
66 # vals is a dict which matches case values with what should be decoded to.
67 # builder is called on the exploded contents of "vals" values to generate
68 # whatever code should be used.
69 def doSplitDecode(name, Name, builder, switchVal, vals, default = None):
70 header_output = ''
71 decoder_output = ''
72 decode_block = 'switch(%s) {\n' % switchVal
73 exec_output = ''
70 blocks = OutputBlocks()
71 blocks.decode_block += 'switch(%s) {\n' % switchVal
74 for (val, todo) in vals.items():
72 for (val, todo) in vals.items():
75 (new_header_output,
76 new_decoder_output,
77 new_decode_block,
78 new_exec_output) = builder(name, Name, *todo)
79 header_output += new_header_output
80 decoder_output += new_decoder_output
81 decode_block += '\tcase %s: %s\n' % (val, new_decode_block)
82 exec_output += new_exec_output
73 built = builder(name, Name, *todo)
74 built.decode_block = '\tcase %s: %s\n' % (val, built.decode_block)
75 blocks.append(built)
83 if default:
76 if default:
84 (new_header_output,
85 new_decoder_output,
86 new_decode_block,
87 new_exec_output) = builder(name, Name, *default)
88 header_output += new_header_output
89 decoder_output += new_decoder_output
90 decode_block += '\tdefault: %s\n' % new_decode_block
91 exec_output += new_exec_output
92 decode_block += '}\n'
93 return (header_output, decoder_output, decode_block, exec_output)
77 built = builder(name, Name, *default)
78 built.decode_block = '\tdefault: %s\n' % built.decode_block
79 blocks.append(built)
80 blocks.decode_block += '}\n'
81 return blocks
94}};
95
96let {{
97 class OpType(object):
98 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]*))")
99 def __init__(self, opTypeString):
100 match = OpType.parser.search(opTypeString)
101 if match == None:

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138 # This might refer to memory or to a register. We need to
139 # divide it up farther.
140 regCode = opRe.sub("%{(uint8_t)MODRM_RM}", code)
141 regTypes = copy.copy(opTypes)
142 regTypes.pop(-1)
143 # This needs to refer to memory, but we'll fill in the details
144 # later. It needs to take into account unaligned memory
145 # addresses.
82}};
83
84let {{
85 class OpType(object):
86 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]*))")
87 def __init__(self, opTypeString):
88 match = OpType.parser.search(opTypeString)
89 if match == None:

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126 # This might refer to memory or to a register. We need to
127 # divide it up farther.
128 regCode = opRe.sub("%{(uint8_t)MODRM_RM}", code)
129 regTypes = copy.copy(opTypes)
130 regTypes.pop(-1)
131 # This needs to refer to memory, but we'll fill in the details
132 # later. It needs to take into account unaligned memory
133 # addresses.
134 code = "GenFault ${new UnimpInstFault}\n" + code
146 memCode = opRe.sub("%0", code)
147 memTypes = copy.copy(opTypes)
148 memTypes.pop(-1)
149 return doSplitDecode(name, Name, specializeInst, "MODRM_MOD",
150 {"3" : (regCode, regTypes)}, (memCode, memTypes))
151 elif opType.tag in ("I", "J"):
152 # Immediates are already in the instruction, so don't leave in
153 # those parameters
154 code = opRe.sub("${IMMEDIATE}", code)
155 elif opType.tag == "M":
156 # This needs to refer to memory, but we'll fill in the details
157 # later. It needs to take into account unaligned memory
158 # addresses.
135 memCode = opRe.sub("%0", code)
136 memTypes = copy.copy(opTypes)
137 memTypes.pop(-1)
138 return doSplitDecode(name, Name, specializeInst, "MODRM_MOD",
139 {"3" : (regCode, regTypes)}, (memCode, memTypes))
140 elif opType.tag in ("I", "J"):
141 # Immediates are already in the instruction, so don't leave in
142 # those parameters
143 code = opRe.sub("${IMMEDIATE}", code)
144 elif opType.tag == "M":
145 # This needs to refer to memory, but we'll fill in the details
146 # later. It needs to take into account unaligned memory
147 # addresses.
148 code = "GenFault ${new UnimpInstFault}\n" + code
159 code = opRe.sub("%0", code)
160 elif opType.tag in ("PR", "R", "VR"):
161 # There should probably be a check here to verify that mod
162 # is equal to 11b
163 code = opRe.sub("%{(uint8_t)MODRM_RM}", code)
164 else:
165 raise Exception, "Unrecognized tag %s." % opType.tag
166 opTypes.pop(-1)
167
168 # At this point, we've built up "code" to have all the necessary extra
169 # instructions needed to implement whatever types of operands were
170 # specified. Now we'll assemble it it into a StaticInst.
149 code = opRe.sub("%0", code)
150 elif opType.tag in ("PR", "R", "VR"):
151 # There should probably be a check here to verify that mod
152 # is equal to 11b
153 code = opRe.sub("%{(uint8_t)MODRM_RM}", code)
154 else:
155 raise Exception, "Unrecognized tag %s." % opType.tag
156 opTypes.pop(-1)
157
158 # At this point, we've built up "code" to have all the necessary extra
159 # instructions needed to implement whatever types of operands were
160 # specified. Now we'll assemble it it into a StaticInst.
171 return assembleMicro(name, Name, code)
161 blocks = OutputBlocks()
162 blocks.append(assembleMicro(name, Name, code))
163 return blocks
172}};
164}};