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
74typedef unsigned int mips_instruction;
75
76/* microMIPS instruction decode structure. Do NOT export!!! */
77struct 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!!! */
86extern const int reg16to32[];
87
88#endif /* _ASM_INST_H */
89