1// -*- mode:c++ -*-
2
3// Copyright (c) 2010 ARM Limited
4// All rights reserved
5//
6// The license below extends only to copyright in the software and shall
7// not be construed as granting a license to any other intellectual
8// property including but not limited to intellectual property relating
9// to a hardware implementation of the functionality of the software
10// licensed hereunder. You may use the software subject to the license
11// terms below provided that you ensure that this notice is replicated
12// unmodified and in its entirety in all distributions of the software,
13// modified or unmodified, in source code or in binary form.
14//
15// Redistribution and use in source and binary forms, with or without
16// modification, are permitted provided that the following conditions are
17// met: redistributions of source code must retain the above copyright
18// notice, this list of conditions and the following disclaimer;
19// redistributions in binary form must reproduce the above copyright
20// notice, this list of conditions and the following disclaimer in the
21// documentation and/or other materials provided with the distribution;
22// neither the name of the copyright holders nor the names of its
23// contributors may be used to endorse or promote products derived from
24// this software without specific prior written permission.
25//
26// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
27// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
28// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
29// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
30// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
31// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
32// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
33// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
34// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
35// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
36// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37//
38// Authors: Gabe Black
39
40let {{
41 def loadStoreBase(name, Name, imm, eaCode, accCode, memFlags,
42 instFlags, base = 'Memory', execTemplateBase = ''):
43 # Make sure flags are in lists (convert to lists if not).
44 memFlags = makeList(memFlags)
45 instFlags = makeList(instFlags)
46
47 # This shouldn't be part of the eaCode, but until the exec templates
48 # are converted over it's the easiest place to put it.
49 eaCode += '\n unsigned memAccessFlags = '
50 if memFlags:
51 eaCode += (string.join(memFlags, '|') + ';')
52 else:
53 eaCode += '0;'
54
55 iop = InstObjParams(name, Name, base,
56 {'ea_code': eaCode,
57 'memacc_code': accCode,
58 'predicate_test': predicateTest},
59 instFlags)
60
61 fullExecTemplate = eval(execTemplateBase + 'Execute')
62 initiateAccTemplate = eval(execTemplateBase + 'InitiateAcc')
63 completeAccTemplate = eval(execTemplateBase + 'CompleteAcc')
64
65 if imm:
66 declareTemplate = LoadStoreImmDeclare
67 constructTemplate = LoadStoreImmConstructor
68 else:
69 declareTemplate = LoadStoreRegDeclare
70 constructTemplate = LoadStoreRegConstructor
71
72 # (header_output, decoder_output, decode_block, exec_output)
73 return (declareTemplate.subst(iop),
74 constructTemplate.subst(iop),
75 fullExecTemplate.subst(iop)
76 + initiateAccTemplate.subst(iop)
77 + completeAccTemplate.subst(iop))
78
79 def memClassName(base, post, add, writeback, \
80 size=4, sign=False, user=False):
81 Name = base
82
83 if post:
84 Name += '_PY'
85 else:
86 Name += '_PN'
87
88 if add:
89 Name += '_AY'
90 else:
91 Name += '_AN'
92
93 if writeback:
94 Name += '_WY'
95 else:
96 Name += '_WN'
97
98 Name += ('_SZ%d' % size)
99
100 if sign:
101 Name += '_SY'
102 else:
103 Name += '_SN'
104
105 if user:
106 Name += '_UY'
107 else:
108 Name += '_UN'
109
110 return Name
111
112 def buildMemSuffix(sign, size):
113 if size == 4:
114 memSuffix = ''
115 elif size == 2:
116 if sign:
117 memSuffix = '.sh'
118 else:
119 memSuffix = '.uh'
120 elif size == 1:
121 if sign:
122 memSuffix = '.sb'
123 else:
124 memSuffix = '.ub'
125 else:
126 raise Exception, "Unrecognized size for load %d" % size
127
128 return memSuffix
129
130 def buildMemBase(base, post, writeback):
131 if post and writeback:
132 base = "MemoryPostIndex<%s>" % base
133 elif not post and writeback:
134 base = "MemoryPreIndex<%s>" % base
135 elif not post and not writeback:
136 base = "MemoryOffset<%s>" % base
137 else:
138 raise Exception, "Illegal combination of post and writeback"
139 return base
140}};
141