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

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40//
41// Authors: Stephen Hines
42
43let {{
44
45 calcCcCode = '''
46 if (%(canOverflow)s){
47 cprintf("canOverflow: %%d\\n", Rd < resTemp);
48 replaceBits(CondCodes, 27, Rd < resTemp);
49 } else {
50 uint16_t _ic, _iv, _iz, _in;
51 _in = (resTemp >> %(negBit)d) & 1;
52 _iz = (resTemp == 0);
53 _iv = %(ivValue)s & 1;
54 _ic = %(icValue)s & 1;
55
56 CondCodes = _in << 31 | _iz << 30 | _ic << 29 | _iv << 28 |
57 (CondCodes & 0x0FFFFFFF);
58
59 DPRINTF(Arm, "in = %%d\\n", _in);
60 DPRINTF(Arm, "iz = %%d\\n", _iz);
61 DPRINTF(Arm, "ic = %%d\\n", _ic);
62 DPRINTF(Arm, "iv = %%d\\n", _iv);
63 }
64 '''
65}};
66
67let {{
68 def getCcCode(flagtype):
69 icReg = icImm = iv = ''
70 negBit = 31
71 canOverflow = 'false'
72
73 if flagtype == "none":
74 icReg = icImm = 'CondCodes<29:>'
75 iv = 'CondCodes<28:>'
76 elif flagtype == "llbit":
77 icReg = icImm = 'CondCodes<29:>'
78 iv = 'CondCodes<28:>'
79 negBit = 63
80 elif flagtype == "overflow":
81 canOverflow = "true"
82 icReg = icImm = iv = '0'
83 elif flagtype == "add":
84 icReg = icImm = 'findCarry(32, resTemp, Rn, op2)'
85 iv = 'findOverflow(32, resTemp, Rn, op2)'
86 elif flagtype == "sub":
87 icReg = icImm ='findCarry(32, resTemp, Rn, ~op2)'
88 iv = 'findOverflow(32, resTemp, Rn, ~op2)'
89 elif flagtype == "rsb":
90 icReg = icImm = 'findCarry(32, resTemp, op2, ~Rn)'
91 iv = 'findOverflow(32, resTemp, op2, ~Rn)'
92 else:
93 icReg = 'shift_carry_rs(Rm, Rs<7:0>, shift, CondCodes<29:>)'
94 icImm = 'shift_carry_imm(Rm, shift_size, shift, CondCodes<29:>)'
95 iv = 'CondCodes<28:>'
96 return (calcCcCode % {"icValue" : icReg,
97 "ivValue" : iv,
98 "negBit" : negBit,
99 "canOverflow" : canOverflow },
100 calcCcCode % {"icValue" : icImm,
101 "ivValue" : iv,
102 "negBit" : negBit,
103 "canOverflow" : canOverflow })
104
105 def getImmCcCode(flagtype):
106 ivValue = icValue = ''
107 negBit = 31
108 canOverflow = 'false'
109 if flagtype == "none":
110 icValue = 'CondCodes<29:>'
111 ivValue = 'CondCodes<28:>'
112 elif flagtype == "llbit":
113 icValue = 'CondCodes<29:>'
114 ivValue = 'CondCodes<28:>'
115 negBit = 63
116 elif flagtype == "overflow":
117 icVaule = ivValue = '0'
118 canOverflow = "true"
119 elif flagtype == "add":
120 icValue = 'findCarry(32, resTemp, Rn, rotated_imm)'
121 ivValue = 'findOverflow(32, resTemp, Rn, rotated_imm)'
122 elif flagtype == "sub":
123 icValue = 'findCarry(32, resTemp, Rn, ~rotated_imm)'
124 ivValue = 'findOverflow(32, resTemp, Rn, ~rotated_imm)'
125 elif flagtype == "rsb":
126 icValue = 'findCarry(32, resTemp, rotated_imm, ~Rn)'
127 ivValue = 'findOverflow(32, resTemp, rotated_imm, ~Rn)'
128 elif flagtype == "modImm":
129 icValue = 'rotated_carry'
130 ivValue = 'CondCodes<28:>'
131 else:
132 icValue = '(rotate ? rotated_carry:CondCodes<29:>)'
133 ivValue = 'CondCodes<28:>'
134 return calcCcCode % vars()
135}};
136
137def format DataOp(code, flagtype = logic) {{
138 (regCcCode, immCcCode) = getCcCode(flagtype)
139 regCode = '''uint32_t op2 = shift_rm_rs(Rm, Rs<7:0>,
140 shift, CondCodes<29:>);
141 op2 = op2;''' + code
142 immCode = '''uint32_t op2 = shift_rm_imm(Rm, shift_size,
143 shift, CondCodes<29:>);
144 op2 = op2;''' + code
145 regIop = InstObjParams(name, Name, 'PredIntOp',
146 {"code": regCode,
147 "predicate_test": predicateTest})
148 immIop = InstObjParams(name, Name + "Imm", 'PredIntOp',
149 {"code": immCode,
150 "predicate_test": predicateTest})
151 regCcIop = InstObjParams(name, Name + "Cc", 'PredIntOp',

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