bitfields.isa (2632:1bb2f91485ea) bitfields.isa (2686:f0d591379ac3)
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
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
20// Integer operate format
21def bitfield RT <20:16>;
22def bitfield RT_HI <20:19>;
23def bitfield RT_LO <18:16>;
24
25def bitfield RS <25:21>;
26def bitfield RS_MSB <25:25>;
27def bitfield RS_HI <25:24>;
28def bitfield RS_LO <23:21>;
20def bitfield RS <25:21>;
21def bitfield RS_MSB <25:25>;
22def bitfield RS_HI <25:24>;
23def bitfield RS_LO <23:21>;
29def bitfield RS_SRL <25:22>;
30
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>;
31def bitfield RD <15:11>;
32
30def bitfield RD <15:11>;
31
33def bitfield INTIMM <15: 0>; // integer immediate (literal)
32def bitfield INTIMM <15: 0>;
34
35// Floating-point operate format
36def bitfield FMT <25:21>;
37def bitfield FR <25:21>;
38def bitfield FT <20:16>;
39def bitfield FS <15:11>;
40def bitfield FD <10:6>;
41

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62
63// Jmp format
64def bitfield JMPTARG <25: 0>;
65def bitfield HINT <10: 6>;
66
67def bitfield SYSCALLCODE <25: 6>;
68def bitfield TRAPCODE <15:13>;
69
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

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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
70// M5 instructions
71def bitfield M5FUNC <7:0>;
73// M5 instructions
74def bitfield M5FUNC <7:0>;