1 /*
2 * Format of an instruction in memory.
3 *
4 * This file is subject to the terms and conditions of the GNU General Public
5 * License. See the file "COPYING" in the main directory of this archive
6 * for more details.
7 *
8 * Copyright (C) 1996, 2000 by Ralf Baechle
9 * Copyright (C) 2006 by Thiemo Seufer
10 */
11 #ifndef _ASM_INST_H
12 #define _ASM_INST_H
13
14 #include <uapi/asm/inst.h>
15
16 /* HACHACHAHCAHC ... */
17
18 /* In case some other massaging is needed, keep MIPSInst as wrapper */
19
20 #define MIPSInst(x) x
21
22 #define I_OPCODE_SFT 26
23 #define MIPSInst_OPCODE(x) (MIPSInst(x) >> I_OPCODE_SFT)
24
25 #define I_JTARGET_SFT 0
26 #define MIPSInst_JTARGET(x) (MIPSInst(x) & 0x03ffffff)
27
28 #define I_RS_SFT 21
29 #define MIPSInst_RS(x) ((MIPSInst(x) & 0x03e00000) >> I_RS_SFT)
30
31 #define I_RT_SFT 16
32 #define MIPSInst_RT(x) ((MIPSInst(x) & 0x001f0000) >> I_RT_SFT)
33
34 #define I_IMM_SFT 0
35 #define MIPSInst_SIMM(x) ((int)((short)(MIPSInst(x) & 0xffff)))
36 #define MIPSInst_UIMM(x) (MIPSInst(x) & 0xffff)
37
38 #define I_CACHEOP_SFT 18
39 #define MIPSInst_CACHEOP(x) ((MIPSInst(x) & 0x001c0000) >> I_CACHEOP_SFT)
40
41 #define I_CACHESEL_SFT 16
42 #define MIPSInst_CACHESEL(x) ((MIPSInst(x) & 0x00030000) >> I_CACHESEL_SFT)
43
44 #define I_RD_SFT 11
45 #define MIPSInst_RD(x) ((MIPSInst(x) & 0x0000f800) >> I_RD_SFT)
46
47 #define I_RE_SFT 6
48 #define MIPSInst_RE(x) ((MIPSInst(x) & 0x000007c0) >> I_RE_SFT)
49
50 #define I_FUNC_SFT 0
51 #define MIPSInst_FUNC(x) (MIPSInst(x) & 0x0000003f)
52
53 #define I_FFMT_SFT 21
54 #define MIPSInst_FFMT(x) ((MIPSInst(x) & 0x01e00000) >> I_FFMT_SFT)
55
56 #define I_FT_SFT 16
57 #define MIPSInst_FT(x) ((MIPSInst(x) & 0x001f0000) >> I_FT_SFT)
58
59 #define I_FS_SFT 11
60 #define MIPSInst_FS(x) ((MIPSInst(x) & 0x0000f800) >> I_FS_SFT)
61
62 #define I_FD_SFT 6
63 #define MIPSInst_FD(x) ((MIPSInst(x) & 0x000007c0) >> I_FD_SFT)
64
65 #define I_FR_SFT 21
66 #define MIPSInst_FR(x) ((MIPSInst(x) & 0x03e00000) >> I_FR_SFT)
67
68 #define I_FMA_FUNC_SFT 3
69 #define MIPSInst_FMA_FUNC(x) ((MIPSInst(x) & 0x00000038) >> I_FMA_FUNC_SFT)
70
71 #define I_FMA_FFMT_SFT 0
72 #define MIPSInst_FMA_FFMT(x) (MIPSInst(x) & 0x00000007)
73
74 typedef unsigned int mips_instruction;
75
76 /* microMIPS instruction decode structure. Do NOT export!!! */
77 struct mm_decoded_insn {
78 mips_instruction insn;
79 mips_instruction next_insn;
80 int pc_inc;
81 int next_pc_inc;
82 int micro_mips_mode;
83 };
84
85 /* Recode table from 16-bit register notation to 32-bit GPR. Do NOT export!!! */
86 extern const int reg16to32[];
87
88 #endif /* _ASM_INST_H */
89
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