1// -*- mode:c++ -*-
2
3// Copyright (c) 2003-2005 The Regents of The University of Michigan
4// All rights reserved.
5//
6// Redistribution and use in source and binary forms, with or without
7// modification, are permitted provided that the following conditions are
8// met: redistributions of source code must retain the above copyright
9// notice, this list of conditions and the following disclaimer;
10// redistributions in binary form must reproduce the above copyright
11// notice, this list of conditions and the following disclaimer in the
12// documentation and/or other materials provided with the distribution;
13// neither the name of the copyright holders nor the names of its
14// contributors may be used to endorse or promote products derived from
15// this software without specific prior written permission.
16//
17// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28//
29// Authors: Steve Reinhardt
30
31////////////////////////////////////////////////////////////////////
32//
33// Integer operate instructions
34//
35
36output header {{
37 /**
38 * Base class for integer immediate instructions.
39 */
40 class IntegerImm : public AlphaStaticInst
41 {
42 protected:
43 /// Immediate operand value (unsigned 8-bit int).
44 uint8_t imm;
45
46 /// Constructor
47 IntegerImm(const char *mnem, ExtMachInst _machInst, OpClass __opClass)
48 : AlphaStaticInst(mnem, _machInst, __opClass), imm(INTIMM)
49 {
50 }
51
| 1// -*- mode:c++ -*-
2
3// Copyright (c) 2003-2005 The Regents of The University of Michigan
4// All rights reserved.
5//
6// Redistribution and use in source and binary forms, with or without
7// modification, are permitted provided that the following conditions are
8// met: redistributions of source code must retain the above copyright
9// notice, this list of conditions and the following disclaimer;
10// redistributions in binary form must reproduce the above copyright
11// notice, this list of conditions and the following disclaimer in the
12// documentation and/or other materials provided with the distribution;
13// neither the name of the copyright holders nor the names of its
14// contributors may be used to endorse or promote products derived from
15// this software without specific prior written permission.
16//
17// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28//
29// Authors: Steve Reinhardt
30
31////////////////////////////////////////////////////////////////////
32//
33// Integer operate instructions
34//
35
36output header {{
37 /**
38 * Base class for integer immediate instructions.
39 */
40 class IntegerImm : public AlphaStaticInst
41 {
42 protected:
43 /// Immediate operand value (unsigned 8-bit int).
44 uint8_t imm;
45
46 /// Constructor
47 IntegerImm(const char *mnem, ExtMachInst _machInst, OpClass __opClass)
48 : AlphaStaticInst(mnem, _machInst, __opClass), imm(INTIMM)
49 {
50 }
51
|
52 std::string
53 generateDisassembly(Addr pc, const SymbolTable *symtab) const;
| 52 std::string generateDisassembly(
53 Addr pc, const SymbolTable *symtab) const override;
|
54 };
55}};
56
57output decoder {{
58 std::string
59 IntegerImm::generateDisassembly(Addr pc, const SymbolTable *symtab) const
60 {
61 std::stringstream ss;
62
63 ccprintf(ss, "%-10s ", mnemonic);
64
65 // just print the first source reg... if there's
66 // a second one, it's a read-modify-write dest (Rc),
67 // e.g. for CMOVxx
68 if (_numSrcRegs > 0) {
69 printReg(ss, _srcRegIdx[0]);
70 ss << ",";
71 }
72
73 ss << (int)imm;
74
75 if (_numDestRegs > 0) {
76 ss << ",";
77 printReg(ss, _destRegIdx[0]);
78 }
79
80 return ss.str();
81 }
82}};
83
84
85def template RegOrImmDecode {{
86 {
87 AlphaStaticInst *i =
88 (IMM) ? (AlphaStaticInst *)new %(class_name)sImm(machInst)
89 : (AlphaStaticInst *)new %(class_name)s(machInst);
90 if (RC == 31) {
91 i = makeNop(i);
92 }
93 return i;
94 }
95}};
96
97// Primary format for integer operate instructions:
98// - Generates both reg-reg and reg-imm versions if Rb_or_imm is used.
99// - Generates NOP if RC == 31.
100def format IntegerOperate(code, *opt_flags) {{
101 # If the code block contains 'Rb_or_imm', we define two instructions,
102 # one using 'Rb' and one using 'imm', and have the decoder select
103 # the right one.
104 uses_imm = (code.find('Rb_or_imm') != -1)
105 if uses_imm:
106 orig_code = code
107 # base code is reg version:
108 # rewrite by substituting 'Rb' for 'Rb_or_imm'
109 code = re.sub(r'Rb_or_imm', 'Rb', orig_code)
110 # generate immediate version by substituting 'imm'
111 # note that imm takes no extenstion, so we extend
112 # the regexp to replace any extension as well
113 imm_code = re.sub(r'Rb_or_imm(_\w+)?', 'imm', orig_code)
114
115 # generate declaration for register version
116 iop = InstObjParams(name, Name, 'AlphaStaticInst', code, opt_flags)
117 header_output = BasicDeclare.subst(iop)
118 decoder_output = BasicConstructor.subst(iop)
119 exec_output = BasicExecute.subst(iop)
120
121 if uses_imm:
122 # append declaration for imm version
123 imm_iop = InstObjParams(name, Name + 'Imm', 'IntegerImm', imm_code,
124 opt_flags)
125 header_output += BasicDeclare.subst(imm_iop)
126 decoder_output += BasicConstructor.subst(imm_iop)
127 exec_output += BasicExecute.subst(imm_iop)
128 # decode checks IMM bit to pick correct version
129 decode_block = RegOrImmDecode.subst(iop)
130 else:
131 # no imm version: just check for nop
132 decode_block = OperateNopCheckDecode.subst(iop)
133}};
| 54 };
55}};
56
57output decoder {{
58 std::string
59 IntegerImm::generateDisassembly(Addr pc, const SymbolTable *symtab) const
60 {
61 std::stringstream ss;
62
63 ccprintf(ss, "%-10s ", mnemonic);
64
65 // just print the first source reg... if there's
66 // a second one, it's a read-modify-write dest (Rc),
67 // e.g. for CMOVxx
68 if (_numSrcRegs > 0) {
69 printReg(ss, _srcRegIdx[0]);
70 ss << ",";
71 }
72
73 ss << (int)imm;
74
75 if (_numDestRegs > 0) {
76 ss << ",";
77 printReg(ss, _destRegIdx[0]);
78 }
79
80 return ss.str();
81 }
82}};
83
84
85def template RegOrImmDecode {{
86 {
87 AlphaStaticInst *i =
88 (IMM) ? (AlphaStaticInst *)new %(class_name)sImm(machInst)
89 : (AlphaStaticInst *)new %(class_name)s(machInst);
90 if (RC == 31) {
91 i = makeNop(i);
92 }
93 return i;
94 }
95}};
96
97// Primary format for integer operate instructions:
98// - Generates both reg-reg and reg-imm versions if Rb_or_imm is used.
99// - Generates NOP if RC == 31.
100def format IntegerOperate(code, *opt_flags) {{
101 # If the code block contains 'Rb_or_imm', we define two instructions,
102 # one using 'Rb' and one using 'imm', and have the decoder select
103 # the right one.
104 uses_imm = (code.find('Rb_or_imm') != -1)
105 if uses_imm:
106 orig_code = code
107 # base code is reg version:
108 # rewrite by substituting 'Rb' for 'Rb_or_imm'
109 code = re.sub(r'Rb_or_imm', 'Rb', orig_code)
110 # generate immediate version by substituting 'imm'
111 # note that imm takes no extenstion, so we extend
112 # the regexp to replace any extension as well
113 imm_code = re.sub(r'Rb_or_imm(_\w+)?', 'imm', orig_code)
114
115 # generate declaration for register version
116 iop = InstObjParams(name, Name, 'AlphaStaticInst', code, opt_flags)
117 header_output = BasicDeclare.subst(iop)
118 decoder_output = BasicConstructor.subst(iop)
119 exec_output = BasicExecute.subst(iop)
120
121 if uses_imm:
122 # append declaration for imm version
123 imm_iop = InstObjParams(name, Name + 'Imm', 'IntegerImm', imm_code,
124 opt_flags)
125 header_output += BasicDeclare.subst(imm_iop)
126 decoder_output += BasicConstructor.subst(imm_iop)
127 exec_output += BasicExecute.subst(imm_iop)
128 # decode checks IMM bit to pick correct version
129 decode_block = RegOrImmDecode.subst(iop)
130 else:
131 # no imm version: just check for nop
132 decode_block = OperateNopCheckDecode.subst(iop)
133}};
|