arch/mips/include/asm/inst.h

   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  2
  69 #define MIPSInst_FMA_FUNC(x) ((MIPSInst(x) & 0x0000003c) >> I_FMA_FUNC_SFT)
  70
  71 #define I_FMA_FFMT_SFT  0
  72 #define MIPSInst_FMA_FFMT(x) (MIPSInst(x) & 0x00000003)
  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 */