target-lm32/lm32-decode.h

   1 /*
   2  *  LatticeMico32 instruction decoding macros.
   3  *
   4  *  Copyright (c) 2010 Michael Walle <michael@walle.cc>
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 /* Convenient binary macros */
  21 #define HEX__(n) 0x##n##LU
  22 #define B8__(x) (((x&0x0000000FLU) ? 1 : 0) \
  23                   + ((x&0x000000F0LU) ? 2 : 0) \
  24                   + ((x&0x00000F00LU) ? 4 : 0) \
  25                   + ((x&0x0000F000LU) ? 8 : 0) \
  26                   + ((x&0x000F0000LU) ? 16 : 0) \
  27                   + ((x&0x00F00000LU) ? 32 : 0) \
  28                   + ((x&0x0F000000LU) ? 64 : 0) \
  29                   + ((x&0xF0000000LU) ? 128 : 0))
  30 #define B8(d) ((unsigned char)B8__(HEX__(d)))
  31
  32 /* Decode logic, value and mask.  */
  33 #define DEC_ADD     {B8(00001101), B8(00011111)}
  34 #define DEC_AND     {B8(00001000), B8(00011111)}
  35 #define DEC_ANDHI   {B8(00011000), B8(00111111)}
  36 #define DEC_B       {B8(00110000), B8(00111111)}
  37 #define DEC_BI      {B8(00111000), B8(00111111)}
  38 #define DEC_BE      {B8(00010001), B8(00111111)}
  39 #define DEC_BG      {B8(00010010), B8(00111111)}
  40 #define DEC_BGE     {B8(00010011), B8(00111111)}
  41 #define DEC_BGEU    {B8(00010100), B8(00111111)}
  42 #define DEC_BGU     {B8(00010101), B8(00111111)}
  43 #define DEC_BNE     {B8(00010111), B8(00111111)}
  44 #define DEC_CALL    {B8(00110110), B8(00111111)}
  45 #define DEC_CALLI   {B8(00111110), B8(00111111)}
  46 #define DEC_CMPE    {B8(00011001), B8(00011111)}
  47 #define DEC_CMPG    {B8(00011010), B8(00011111)}
  48 #define DEC_CMPGE   {B8(00011011), B8(00011111)}
  49 #define DEC_CMPGEU  {B8(00011100), B8(00011111)}
  50 #define DEC_CMPGU   {B8(00011101), B8(00011111)}
  51 #define DEC_CMPNE   {B8(00011111), B8(00011111)}
  52 #define DEC_DIVU    {B8(00100011), B8(00111111)}
  53 #define DEC_LB      {B8(00000100), B8(00111111)}
  54 #define DEC_LBU     {B8(00010000), B8(00111111)}
  55 #define DEC_LH      {B8(00000111), B8(00111111)}
  56 #define DEC_LHU     {B8(00001011), B8(00111111)}
  57 #define DEC_LW      {B8(00001010), B8(00111111)}
  58 #define DEC_MODU    {B8(00110001), B8(00111111)}
  59 #define DEC_MUL     {B8(00000010), B8(00011111)}
  60 #define DEC_NOR     {B8(00000001), B8(00011111)}
  61 #define DEC_OR      {B8(00001110), B8(00011111)}
  62 #define DEC_ORHI    {B8(00011110), B8(00111111)}
  63 #define DEC_RAISE   {B8(00101011), B8(00111111)}
  64 #define DEC_RCSR    {B8(00100100), B8(00111111)}
  65 #define DEC_SB      {B8(00001100), B8(00111111)}
  66 #define DEC_SEXTB   {B8(00101100), B8(00111111)}
  67 #define DEC_SEXTH   {B8(00110111), B8(00111111)}
  68 #define DEC_SH      {B8(00000011), B8(00111111)}
  69 #define DEC_SL      {B8(00001111), B8(00011111)}
  70 #define DEC_SR      {B8(00000101), B8(00011111)}
  71 #define DEC_SRU     {B8(00000000), B8(00011111)}
  72 #define DEC_SUB     {B8(00110010), B8(00111111)}
  73 #define DEC_SW      {B8(00010110), B8(00111111)}
  74 #define DEC_USER    {B8(00110011), B8(00111111)}
  75 #define DEC_WCSR    {B8(00110100), B8(00111111)}
  76 #define DEC_XNOR    {B8(00001001), B8(00011111)}
  77 #define DEC_XOR     {B8(00000110), B8(00011111)}
  78