diff options
Diffstat (limited to 'src/arch/sparc/isa/decoder.isa')
| -rw-r--r-- | src/arch/sparc/isa/decoder.isa | 49 |
1 files changed, 37 insertions, 12 deletions
diff --git a/src/arch/sparc/isa/decoder.isa b/src/arch/sparc/isa/decoder.isa index 3c5236661..0c8d77362 100644 --- a/src/arch/sparc/isa/decoder.isa +++ b/src/arch/sparc/isa/decoder.isa @@ -41,20 +41,45 @@ decode OP default Unknown::unknown() 0x0: Trap::illtrap({{fault = new IllegalInstruction;}}); format BranchN { - 0x1: decode BPCC + 0x1: decode COND2 { - 0x0: bpcci(19, {{ - if(passesCondition(Ccr<3:0>, COND2)) - NNPC = xc->readPC() + disp; - else - handle_annul - }}); - 0x2: bpccx(19, {{ - if(passesCondition(Ccr<7:4>, COND2)) + //Branch Always + 0x8: decode A + { + 0x0: b(19, {{ NNPC = xc->readPC() + disp; - else - handle_annul - }}); + }}); + 0x1: b(19, {{ + NPC = xc->readPC() + disp; + NNPC = NPC + 4; + }}, ',a'); + } + //Branch Never + 0x0: decode A + { + 0x0: bn(19, {{ + NNPC = NNPC;//Don't do anything + }}); + 0x1: bn(19, {{ + NPC = xc->readNextPC() + 4; + NNPC = NPC + 4; + }}, ',a'); + } + default: decode BPCC + { + 0x0: bpcci(19, {{ + if(passesCondition(Ccr<3:0>, COND2)) + NNPC = xc->readPC() + disp; + else + handle_annul + }}); + 0x2: bpccx(19, {{ + if(passesCondition(Ccr<7:4>, COND2)) + NNPC = xc->readPC() + disp; + else + handle_annul + }}); + } } 0x2: bicc(22, {{ if(passesCondition(Ccr<3:0>, COND2)) |