diff options
Diffstat (limited to 'arch/mips/isa/decoder.isa')
| -rw-r--r-- | arch/mips/isa/decoder.isa | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/arch/mips/isa/decoder.isa b/arch/mips/isa/decoder.isa index 9994acd0b..3f054f6a5 100644 --- a/arch/mips/isa/decoder.isa +++ b/arch/mips/isa/decoder.isa @@ -30,7 +30,17 @@ decode OPCODE_HI default Unknown::unknown() { //Table A-3 Note: "1. Specific encodings of the rt, rd, and sa fields //are used to distinguish among the SLL, NOP, SSNOP and EHB functions." - 0x0: sll({{ Rd = Rt.uw << SA; }}); + 0x0: decode RS { + 0x0: decode RT default BasicOp::sll({{ Rd = Rt.uw << SA; }}) { + 0x0: decode RD{ + 0x0: decode HINT { + 0x0:nop({{}}); //really sll r0,r0,0 + 0x1:ssnop({{}});//really sll r0,r0,1 + 0x3:ehb({{}}); //really sll r0,r0,3 + } + } + } + } 0x2: decode SRL { 0: srl({{ Rd = Rt.uw >> SA; }}); |