bitfields.isa revision 2686
1// -*- mode:c++ -*- 2 3//////////////////////////////////////////////////////////////////// 4// 5// Bitfield definitions. 6// 7 8def bitfield OPCODE <31:26>; 9def bitfield OPCODE_HI <31:29>; 10def bitfield OPCODE_LO <28:26>; 11 12def bitfield REGIMM <20:16>; 13def bitfield REGIMM_HI <20:19>; 14def bitfield REGIMM_LO <18:16>; 15 16def bitfield FUNCTION < 5: 0>; 17def bitfield FUNCTION_HI < 5: 3>; 18def bitfield FUNCTION_LO < 2: 0>; 19 20def bitfield RS <25:21>; 21def bitfield RS_MSB <25:25>; 22def bitfield RS_HI <25:24>; 23def bitfield RS_LO <23:21>; 24def bitfield RS_SRL <25:22>; 25def bitfield RS_RT <25:16>; 26def bitfield RT <20:16>; 27def bitfield RT_HI <20:19>; 28def bitfield RT_LO <18:16>; 29def bitfield RT_RD <20:11>; 30def bitfield RD <15:11>; 31 32def bitfield INTIMM <15: 0>; 33 34// Floating-point operate format 35def bitfield FMT <25:21>; 36def bitfield FR <25:21>; 37def bitfield FT <20:16>; 38def bitfield FS <15:11>; 39def bitfield FD <10:6>; 40 41def bitfield ND <17:17>; 42def bitfield TF <16:16>; 43def bitfield MOVCI <16:16>; 44def bitfield MOVCF <16:16>; 45def bitfield SRL <21:21>; 46def bitfield SRLV < 6: 6>; 47def bitfield SA <10: 6>; 48 49// Floating Point Condition Codes 50def bitfield CC <10:8>; 51def bitfield BRANCH_CC <20:18>; 52 53// CP0 Register Select 54def bitfield SEL < 2: 0>; 55 56// Interrupts 57def bitfield SC < 5: 5>; 58 59// Branch format 60def bitfield OFFSET <15: 0>; // displacement 61 62// Jmp format 63def bitfield JMPTARG <25: 0>; 64def bitfield HINT <10: 6>; 65 66def bitfield SYSCALLCODE <25: 6>; 67def bitfield TRAPCODE <15:13>; 68 69// EXT/INS instructions 70def bitfield MSB <15:11>; 71def bitfield LSB <10: 6>; 72 73// M5 instructions 74def bitfield M5FUNC <7:0>; 75