decoder.isa (3998:593cc702b366) decoder.isa (4004:d551cf1bba0d)
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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57 }
58 //Branch Never
59 0x0: decode A
60 {
61 0x0: bpn(19, {{
62 NNPC = NNPC;//Don't do anything
63 }});
64 0x1: bpn(19, {{
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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57 }
58 //Branch Never
59 0x0: decode A
60 {
61 0x0: bpn(19, {{
62 NNPC = NNPC;//Don't do anything
63 }});
64 0x1: bpn(19, {{
65 NPC = xc->readNextPC() + 4;
66 NNPC = NPC + 4;
65 NNPC = NPC + 8;
66 NPC = NPC + 4;
67 }}, ',a');
68 }
69 default: decode BPCC
70 {
71 0x0: bpcci(19, {{
72 if(passesCondition(Ccr<3:0>, COND2))
73 NNPC = xc->readPC() + disp;
74 else
75 handle_annul
76 }});
77 0x2: bpccx(19, {{
78 if(passesCondition(Ccr<7:4>, COND2))
67 }}, ',a');
68 }
69 default: decode BPCC
70 {
71 0x0: bpcci(19, {{
72 if(passesCondition(Ccr<3:0>, COND2))
73 NNPC = xc->readPC() + disp;
74 else
75 handle_annul
76 }});
77 0x2: bpccx(19, {{
78 if(passesCondition(Ccr<7:4>, COND2))
79 {
80 //warn("Took branch!\n");
81 NNPC = xc->readPC() + disp;
79 NNPC = xc->readPC() + disp;
82 }
83 else
80 else
84 {
85 //warn("Didn't take branch!\n");
86 handle_annul
81 handle_annul
87 }
88 }});
89 }
90 }
91 //bicc
92 0x2: decode COND2
93 {
94 //Branch Always
95 0x8: decode A

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104 }
105 //Branch Never
106 0x0: decode A
107 {
108 0x0: bn(22, {{
109 NNPC = NNPC;//Don't do anything
110 }});
111 0x1: bn(22, {{
82 }});
83 }
84 }
85 //bicc
86 0x2: decode COND2
87 {
88 //Branch Always
89 0x8: decode A

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98 }
99 //Branch Never
100 0x0: decode A
101 {
102 0x0: bn(22, {{
103 NNPC = NNPC;//Don't do anything
104 }});
105 0x1: bn(22, {{
112 NPC = xc->readNextPC() + 4;
113 NNPC = NPC + 4;
106 NNPC = NPC + 8;
107 NPC = NPC + 4;
114 }}, ',a');
115 }
116 default: bicc(22, {{
117 if(passesCondition(Ccr<3:0>, COND2))
118 NNPC = xc->readPC() + disp;
119 else
120 handle_annul
121 }});

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160 NNPC = xc->readPC() + disp;
161 else
162 handle_annul
163 }});
164 }
165 }
166 //SETHI (or NOP if rd == 0 and imm == 0)
167 0x4: SetHi::sethi({{Rd.udw = imm;}});
108 }}, ',a');
109 }
110 default: bicc(22, {{
111 if(passesCondition(Ccr<3:0>, COND2))
112 NNPC = xc->readPC() + disp;
113 else
114 handle_annul
115 }});

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154 NNPC = xc->readPC() + disp;
155 else
156 handle_annul
157 }});
158 }
159 }
160 //SETHI (or NOP if rd == 0 and imm == 0)
161 0x4: SetHi::sethi({{Rd.udw = imm;}});
168 0x5: FailUnimpl::fbpfcc();
169 0x6: FailUnimpl::fbfcc();
162 //fbpfcc
163 0x5: decode COND2 {
164 format BranchN {
165 //Branch Always
166 0x8: decode A
167 {
168 0x0: fbpa(22, {{
169 NNPC = xc->readPC() + disp;
170 }});
171 0x1: fbpa(22, {{
172 NPC = xc->readPC() + disp;
173 NNPC = NPC + 4;
174 }}, ',a');
175 }
176 //Branch Never
177 0x0: decode A
178 {
179 0x0: fbpn(22, {{
180 NNPC = NNPC;//Don't do anything
181 }});
182 0x1: fbpn(22, {{
183 NNPC = NPC + 8;
184 NPC = NPC + 4;
185 }}, ',a');
186 }
187 default: decode BPCC {
188 0x0: fbpcc0(22, {{
189 if(passesFpCondition(Fsr<11:10>, COND2))
190 NNPC = xc->readPC() + disp;
191 else
192 handle_annul
193 }});
194 0x1: fbpcc1(22, {{
195 if(passesFpCondition(Fsr<33:32>, COND2))
196 NNPC = xc->readPC() + disp;
197 else
198 handle_annul
199 }});
200 0x2: fbpcc2(22, {{
201 if(passesFpCondition(Fsr<35:34>, COND2))
202 NNPC = xc->readPC() + disp;
203 else
204 handle_annul
205 }});
206 0x3: fbpcc3(22, {{
207 if(passesFpCondition(Fsr<37:36>, COND2))
208 NNPC = xc->readPC() + disp;
209 else
210 handle_annul
211 }});
212 }
213 }
214 }
215 //fbfcc
216 0x6: decode COND2 {
217 format BranchN {
218 //Branch Always
219 0x8: decode A
220 {
221 0x0: fba(22, {{
222 NNPC = xc->readPC() + disp;
223 }});
224 0x1: fba(22, {{
225 NPC = xc->readPC() + disp;
226 NNPC = NPC + 4;
227 }}, ',a');
228 }
229 //Branch Never
230 0x0: decode A
231 {
232 0x0: fbn(22, {{
233 NNPC = NNPC;//Don't do anything
234 }});
235 0x1: fbn(22, {{
236 NNPC = NPC + 8;
237 NPC = NPC + 4;
238 }}, ',a');
239 }
240 default: fbfcc(22, {{
241 if(passesFpCondition(Fsr<11:10>, COND2))
242 NNPC = xc->readPC() + disp;
243 else
244 handle_annul
245 }});
246 }
247 }
170 }
171 0x1: BranchN::call(30, {{
172 if (Pstate<3:>)
173 R15 = (xc->readPC())<31:0>;
174 else
175 R15 = xc->readPC();
176 NNPC = R15 + disp;
177 }});

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762 else
763 fcc = 0;
764 uint8_t firstbit = 10;
765 if(FCMPCC)
766 firstbit = FCMPCC * 2 + 30;
767 Fsr = insertBits(Fsr, firstbit +1, firstbit, fcc);
768 }});
769 0x53: FpUnimpl::fcmpq();
248 }
249 0x1: BranchN::call(30, {{
250 if (Pstate<3:>)
251 R15 = (xc->readPC())<31:0>;
252 else
253 R15 = xc->readPC();
254 NNPC = R15 + disp;
255 }});

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840 else
841 fcc = 0;
842 uint8_t firstbit = 10;
843 if(FCMPCC)
844 firstbit = FCMPCC * 2 + 30;
845 Fsr = insertBits(Fsr, firstbit +1, firstbit, fcc);
846 }});
847 0x53: FpUnimpl::fcmpq();
770 0x55: fcmpes({{
848 0x54: fcmpes({{
771 uint8_t fcc = 0;
772 if(isnan(Frs1s) || isnan(Frs2s))
773 fault = new FpExceptionIEEE754;
774 if(Frs1s < Frs2s)
775 fcc = 1;
776 else if(Frs1s > Frs2s)
777 fcc = 2;
778 uint8_t firstbit = 10;
779 if(FCMPCC)
780 firstbit = FCMPCC * 2 + 30;
781 Fsr = insertBits(Fsr, firstbit +1, firstbit, fcc);
782 }});
849 uint8_t fcc = 0;
850 if(isnan(Frs1s) || isnan(Frs2s))
851 fault = new FpExceptionIEEE754;
852 if(Frs1s < Frs2s)
853 fcc = 1;
854 else if(Frs1s > Frs2s)
855 fcc = 2;
856 uint8_t firstbit = 10;
857 if(FCMPCC)
858 firstbit = FCMPCC * 2 + 30;
859 Fsr = insertBits(Fsr, firstbit +1, firstbit, fcc);
860 }});
783 0x56: fcmped({{
861 0x55: fcmped({{
784 uint8_t fcc = 0;
785 if(isnan(Frs1s) || isnan(Frs2s))
786 fault = new FpExceptionIEEE754;
787 if(Frs1s < Frs2s)
788 fcc = 1;
789 else if(Frs1s > Frs2s)
790 fcc = 2;
791 uint8_t firstbit = 10;
792 if(FCMPCC)
793 firstbit = FCMPCC * 2 + 30;
794 Fsr = insertBits(Fsr, firstbit +1, firstbit, fcc);
795 }});
862 uint8_t fcc = 0;
863 if(isnan(Frs1s) || isnan(Frs2s))
864 fault = new FpExceptionIEEE754;
865 if(Frs1s < Frs2s)
866 fcc = 1;
867 else if(Frs1s > Frs2s)
868 fcc = 2;
869 uint8_t firstbit = 10;
870 if(FCMPCC)
871 firstbit = FCMPCC * 2 + 30;
872 Fsr = insertBits(Fsr, firstbit +1, firstbit, fcc);
873 }});
796 0x57: FpUnimpl::fcmpeq();
874 0x56: FpUnimpl::fcmpeq();
797 default: FailUnimpl::fpop2();
798 }
799 }
800 //This used to be just impdep1, but now it's a whole bunch
801 //of instructions
802 0x36: decode OPF{
803 0x00: FailUnimpl::edge8();
804 0x01: FailUnimpl::edge8n();

--- 554 unchanged lines hidden --- 		875 default: FailUnimpl::fpop2();
876 }
877 }
878 //This used to be just impdep1, but now it's a whole bunch
879 //of instructions
880 0x36: decode OPF{
881 0x00: FailUnimpl::edge8();
882 0x01: FailUnimpl::edge8n();

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