1// Copyright (c) 2006-2007 The Regents of The University of Michigan
2// All rights reserved.
3//
4// Redistribution and use in source and binary forms, with or without
5// modification, are permitted provided that the following conditions are
6// met: redistributions of source code must retain the above copyright
7// notice, this list of conditions and the following disclaimer;
8// redistributions in binary form must reproduce the above copyright

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40 //Throw an illegal instruction acception
41 0x0: Trap::illtrap({{fault = new IllegalInstruction;}});
42 format BranchN
43 {
44 //bpcc
45 0x1: decode COND2
46 {
47 //Branch Always
48 0x8: bpa(19, annul_code={{
49 NPC = xc->readPC() + disp;
50 NNPC = NPC + 4;
51 }});
52 //Branch Never
53 0x0: bpn(19, {{;}},
54 annul_code={{
55 NNPC = NPC + 8;
56 NPC = NPC + 4;
57 }});
58 default: decode BPCC
59 {
60 0x0: bpcci(19, test={{passesCondition(Ccr<3:0>, COND2)}});
61 0x2: bpccx(19, test={{passesCondition(Ccr<7:4>, COND2)}});
62 }
63 }
64 //bicc
65 0x2: decode COND2
66 {
67 //Branch Always
68 0x8: ba(22, annul_code={{
69 NPC = xc->readPC() + disp;
70 NNPC = NPC + 4;
71 }});
72 //Branch Never
73 0x0: bn(22, {{;}},
74 annul_code={{
75 NNPC = NPC + 8;
76 NPC = NPC + 4;
77 }});
78 default: bicc(22, test={{passesCondition(Ccr<3:0>, COND2)}});
79 }
80 }
81 0x3: decode RCOND2
82 {
83 format BranchSplit
84 {
85 0x1: bpreq(test={{Rs1.sdw == 0}});
86 0x2: bprle(test={{Rs1.sdw <= 0}});
87 0x3: bprl(test={{Rs1.sdw < 0}});
88 0x5: bprne(test={{Rs1.sdw != 0}});
89 0x6: bprg(test={{Rs1.sdw > 0}});
90 0x7: bprge(test={{Rs1.sdw >= 0}});
91 }
92 }
93 //SETHI (or NOP if rd == 0 and imm == 0)
94 0x4: SetHi::sethi({{Rd.udw = imm;}});
95 //fbpfcc
96 0x5: decode COND2 {
97 format BranchN {
98 //Branch Always
99 0x8: fbpa(22, annul_code={{
100 NPC = xc->readPC() + disp;
101 NNPC = NPC + 4;
102 }});
103 //Branch Never
104 0x0: fbpn(22, {{;}},
105 annul_code={{
106 NNPC = NPC + 8;
107 NPC = NPC + 4;
108 }});
109 default: decode BPCC {
110 0x0: fbpfcc0(19, test=
111 {{passesFpCondition(Fsr<11:10>, COND2)}});
112 0x1: fbpfcc1(19, test=
113 {{passesFpCondition(Fsr<33:32>, COND2)}});
114 0x2: fbpfcc2(19, test=
115 {{passesFpCondition(Fsr<35:34>, COND2)}});
116 0x3: fbpfcc3(19, test=
117 {{passesFpCondition(Fsr<37:36>, COND2)}});
118 }
119 }
120 }
121 //fbfcc
122 0x6: decode COND2 {
123 format BranchN {
124 //Branch Always
125 0x8: fba(22, annul_code={{
126 NPC = xc->readPC() + disp;
127 NNPC = NPC + 4;
128 }});
129 //Branch Never
130 0x0: fbn(22, {{;}},
131 annul_code={{
132 NNPC = NPC + 8;
133 NPC = NPC + 4;
134 }});
135 default: fbfcc(22, test=
136 {{passesFpCondition(Fsr<11:10>, COND2)}});
137 }
138 }
139 }
140 0x1: BranchN::call(30, {{
141 if (Pstate<3:>)
142 R15 = (xc->readPC())<31:0>;
143 else
144 R15 = xc->readPC();

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