decoder.isa (3042:aad81cbda3d7) decoder.isa (3056:f613791cfec0)
1// Copyright (c) 2006 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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36decode OP default Unknown::unknown()
37{
38 0x0: decode OP2
39 {
40 //Throw an illegal instruction acception
41 0x0: Trap::illtrap({{fault = new IllegalInstruction;}});
42 format BranchN
43 {
1// Copyright (c) 2006 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

--- 27 unchanged lines hidden (view full) ---

36decode OP default Unknown::unknown()
37{
38 0x0: decode OP2
39 {
40 //Throw an illegal instruction acception
41 0x0: Trap::illtrap({{fault = new IllegalInstruction;}});
42 format BranchN
43 {
44 0x1: decode BPCC
44 0x1: decode COND2
45 {
45 {
46 0x0: bpcci(19, {{
47 if(passesCondition(Ccr<3:0>, COND2))
46 //Branch Always
47 0x8: decode A
48 {
49 0x0: b(19, {{
48 NNPC = xc->readPC() + disp;
50 NNPC = xc->readPC() + disp;
49 else
50 handle_annul
51 }});
52 0x2: bpccx(19, {{
53 if(passesCondition(Ccr<7:4>, COND2))
54 NNPC = xc->readPC() + disp;
55 else
56 handle_annul
57 }});
51 }});
52 0x1: b(19, {{
53 NPC = xc->readPC() + disp;
54 NNPC = NPC + 4;
55 }}, ',a');
56 }
57 //Branch Never
58 0x0: decode A
59 {
60 0x0: bn(19, {{
61 NNPC = NNPC;//Don't do anything
62 }});
63 0x1: bn(19, {{
64 NPC = xc->readNextPC() + 4;
65 NNPC = NPC + 4;
66 }}, ',a');
67 }
68 default: decode BPCC
69 {
70 0x0: bpcci(19, {{
71 if(passesCondition(Ccr<3:0>, COND2))
72 NNPC = xc->readPC() + disp;
73 else
74 handle_annul
75 }});
76 0x2: bpccx(19, {{
77 if(passesCondition(Ccr<7:4>, COND2))
78 NNPC = xc->readPC() + disp;
79 else
80 handle_annul
81 }});
82 }
58 }
59 0x2: bicc(22, {{
60 if(passesCondition(Ccr<3:0>, COND2))
61 NNPC = xc->readPC() + disp;
62 else
63 handle_annul
64 }});
65 }

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84 0x2: bicc(22, {{
85 if(passesCondition(Ccr<3:0>, COND2))
86 NNPC = xc->readPC() + disp;
87 else
88 handle_annul
89 }});
90 }

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