old-cross-binutils/sim/sh/gencode.c

/* Simulator/Opcode generator for the Hitachi Super-H architecture.

   Written by Steve Chamberlain of Cygnus Support.
   sac@cygnus.com

   This file is part of SH sim


		THIS SOFTWARE IS NOT COPYRIGHTED

   Cygnus offers the following for use in the public domain.  Cygnus
   makes no warranty with regard to the software or it's performance
   and the user accepts the software "AS IS" with all faults.

   CYGNUS DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WITH REGARD TO
   THIS SOFTWARE INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

*/

/* This program generates the opcode table for the assembler and
   the simulator code

   -t		prints a pretty table for the assembler manual
   -s		generates the simulator code jump table
   -d		generates a define table
   -x		generates the simulator code switch statement
   default 	generates the opcode tables

*/

#include <stdio.h>

#define MAX_NR_STUFF 20

typedef struct
{
  char *defs;
  char *refs;
  char *name;
  char *code;
  char *stuff[MAX_NR_STUFF];
  int index;
}

op;


op tab[] =
{

  { "n", "", "add #<imm>,<REG_N>", "0111nnnni8*1....",
    "R[n] += SEXT(i);",
    "if (i == 0) {",
    "  UNDEF(n); /* see #ifdef PARANOID */",
    "  break;",
    "}",
  },
  { "n", "mn", "add <REG_M>,<REG_N>", "0011nnnnmmmm1100",
    "R[n] += R[m];",
  },

  { "n", "mn", "addc <REG_M>,<REG_N>", "0011nnnnmmmm1110",
    "ult = R[n] + T;",
    "SET_SR_T (ult < R[n]);",
    "R[n] = ult + R[m];",
    "SET_SR_T (T || (R[n] < ult));",
  },

  { "n", "mn", "addv <REG_M>,<REG_N>", "0011nnnnmmmm1111",
    "ult = R[n] + R[m];",
    "SET_SR_T ((~(R[n] ^ R[m]) & (ult ^ R[n])) >> 31);",
    "R[n] = ult;",
  },

  { "0", "", "and #<imm>,R0", "11001001i8*1....",
    "R0 &= i;",
  },
  { "n", "nm", "and <REG_M>,<REG_N>", "0010nnnnmmmm1001",
    "R[n] &= R[m];",
  },
  { "", "0", "and.b #<imm>,@(R0,GBR)", "11001101i8*1....",
    "MA (1);",
    "WBAT (GBR + R0, RBAT (GBR + R0) & i);",
  },

  { "", "", "bf <bdisp8>", "10001011i8p1....",
    "if (!T) {",
    "  nia = PC + 4 + (SEXT(i) * 2);",
    "  cycles += 2;",
    "}",
  },

  { "", "", "bf.s <bdisp8>", "10001111i8p1....",
    "if (!T) {",
    "  nia = PC + 4 + (SEXT (i) * 2);",
    "  cycles += 2;",
    "  Delay_Slot (PC + 2);",
    "}",
  },

  { "", "", "bra <bdisp12>", "1010i12.........",
    "nia = PC + 4 + (SEXT12 (i) * 2);",
    "Delay_Slot (PC + 2);",
  },

  { "", "n", "braf <REG_N>", "0000nnnn00100011",
    "nia = PC + 4 + R[n];",
    "Delay_Slot (PC + 2);",
  },

  { "", "", "bsr <bdisp12>", "1011i12.........",
    "PR = PC + 4;",
    "nia = PC + 4 + (SEXT12 (i) * 2);",
    "Delay_Slot (PC + 2);",
  },

  { "", "n", "bsrf <REG_N>", "0000nnnn00000011",
    "PR = PC + 4;",
    "nia = PC + 4 + R[n];",
    "Delay_Slot (PC + 2);",
  },

  { "", "", "bt <bdisp8>", "10001001i8p1....",
    "if (T) {",
    "  nia = PC + 4 + (SEXT (i) * 2);",
    "  cycles += 2;",
    "}",
  },

  { "", "", "bt.s <bdisp8>", "10001101i8p1....",
    "if (T) {",
    "  nia = PC + 4 + (SEXT (i) * 2);",
    "  cycles += 2;",
    "  Delay_Slot (PC + 2);",
    "}",
  },

  { "", "", "clrmac", "0000000000101000",
    "MACH = 0;",
    "MACL = 0;",
  },

  { "", "", "clrs", "0000000001001000",
    "SET_SR_S (0);",
  },

  { "", "", "clrt", "0000000000001000",
    "SET_SR_T (0);",
  },

  { "", "0", "cmp/eq #<imm>,R0", "10001000i8*1....",
    "SET_SR_T (R0 == SEXT (i));",
  },
  { "", "mn", "cmp/eq <REG_M>,<REG_N>", "0011nnnnmmmm0000",
    "SET_SR_T (R[n] == R[m]);",
  },
  { "", "mn", "cmp/ge <REG_M>,<REG_N>", "0011nnnnmmmm0011",
    "SET_SR_T (R[n] >= R[m]);",
  },
  { "", "mn", "cmp/gt <REG_M>,<REG_N>", "0011nnnnmmmm0111",
    "SET_SR_T (R[n] > R[m]);",
  },
  { "", "mn", "cmp/hi <REG_M>,<REG_N>", "0011nnnnmmmm0110",
    "SET_SR_T (UR[n] > UR[m]);",
  },
  { "", "mn", "cmp/hs <REG_M>,<REG_N>", "0011nnnnmmmm0010",
    "SET_SR_T (UR[n] >= UR[m]);",
  },
  { "", "n", "cmp/pl <REG_N>", "0100nnnn00010101",
    "SET_SR_T (R[n] > 0);",
  },
  { "", "n", "cmp/pz <REG_N>", "0100nnnn00010001",
    "SET_SR_T (R[n] >= 0);",
  },
  { "", "mn", "cmp/str <REG_M>,<REG_N>", "0010nnnnmmmm1100",
    "ult = R[n] ^ R[m];",
    "SET_SR_T (((ult & 0xff000000) == 0)",
    "          | ((ult & 0xff0000) == 0)",
    "          | ((ult & 0xff00) == 0)",
    "          | ((ult & 0xff) == 0));",
  },

  { "", "mn", "div0s <REG_M>,<REG_N>", "0010nnnnmmmm0111",
    "SET_SR_Q ((R[n] & sbit) != 0);",
    "SET_SR_M ((R[m] & sbit) != 0);",
    "SET_SR_T (M != Q);",
  },

  { "", "", "div0u", "0000000000011001",
    "SET_SR_M (0);",
    "SET_SR_Q (0);",
    "SET_SR_T (0);",
  },

  { "", "", "div1 <REG_M>,<REG_N>", "0011nnnnmmmm0100",
    "div1 (R, m, n/*, T*/);",
  },

  { "", "nm", "dmuls.l <REG_M>,<REG_N>", "0011nnnnmmmm1101",
    "dmul (1/*signed*/, R[n], R[m]);",
  },

  { "", "nm", "dmulu.l <REG_M>,<REG_N>", "0011nnnnmmmm0101",
    "dmul (0/*unsigned*/, R[n], R[m]);",
  },

  { "n", "n", "dt <REG_N>", "0100nnnn00010000",
    "R[n]--;",
    "SET_SR_T (R[n] == 0);",
  },

  { "n", "m", "exts.b <REG_M>,<REG_N>", "0110nnnnmmmm1110",
    "R[n] = SEXT (R[m]);",
  },
  { "n", "m", "exts.w <REG_M>,<REG_N>", "0110nnnnmmmm1111",
    "R[n] = SEXTW (R[m]);",
  },

  { "n", "m", "extu.b <REG_M>,<REG_N>", "0110nnnnmmmm1100",
    "R[n] = (R[m] & 0xff);",
  },
  { "n", "m", "extu.w <REG_M>,<REG_N>", "0110nnnnmmmm1101",
    "R[n] = (R[m] & 0xffff);",
  },

  /* sh3e */
  { "", "", "fabs <FREG_N>", "1111nnnn01011101",
    "FP_UNARY (n, fabs);",
    "/* FIXME: FR(n) &= 0x7fffffff; */",
  },

  /* sh3e */
  { "", "", "fadd <FREG_M>,<FREG_N>", "1111nnnnmmmm0000",
    "FP_OP (n, +, m);",
  },

  /* sh3e */
  { "", "", "fcmp/eq <FREG_M>,<FREG_N>", "1111nnnnmmmm0100",
    "FP_CMP (n, ==, m);",
  },
  /* sh3e */
  { "", "", "fcmp/gt <FREG_M>,<FREG_N>", "1111nnnnmmmm0101",
    "FP_CMP (n, >, m);",
  },

  /* start-sanitize-sh4 */
  { "", "", "fcnvds <DR_N>,FPUL", "1111nnnn10111101",
    "if (! FPSCR_PR || n & 1)",
    "  saved_state.asregs.exception = SIGILL;",
    "else",
    "{",
    "  char buf[4];",
    "  *(float *)buf = DR(n);",
    "  FPUL = *(int *)buf;",
    "}",
  },
  /* end-sanitize-sh4 */

  /* start-sanitize-sh4 */
  { "", "", "fcnvsd FPUL,<DR_N>", "1111nnnn10101101",
    "if (! FPSCR_PR || n & 1)",
    "  saved_state.asregs.exception = SIGILL;",
    "else",
    "{",
    "  char buf[4];",
    "  *(int *)buf = FPUL;",
    "  SET_DR(n, *(float *)buf);",
    "}",
  },
  /* end-sanitize-sh4 */

  /* sh3e */
  { "", "", "fdiv <FREG_M>,<FREG_N>", "1111nnnnmmmm0011",
    "FP_OP (n, /, m);",
    "/* FIXME: check for DP and (n & 1) == 0? */",
  },

  /* start-sanitize-sh4 */
  { "", "", "fipr <FV_M>,<FV_N>", "1111nnmm11101101",
    "/* FIXME: not implemented */",
    "saved_state.asregs.exception = SIGILL;",
    "/* FIXME: check for DP and (n & 1) == 0? */",
  },
  /* end-sanitize-sh4 */

  /* sh3e */
  { "", "", "fldi0 <FREG_N>", "1111nnnn10001101",
    "SET_FR (n, (float)0.0);",
    "/* FIXME: check for DP and (n & 1) == 0? */",
  },

  /* sh3e */
  { "", "", "fldi1 <FREG_N>", "1111nnnn10011101",
    "SET_FR (n, (float)1.0);",
    "/* FIXME: check for DP and (n & 1) == 0? */",
  },

  /* sh3e */
  { "", "", "flds <FREG_N>,FPUL", "1111nnnn00011101",
    "char buf[4];",
    "*(float *)buf = FR(n);",
    "FPUL = *(int *)buf;",
  },

  /* sh3e */
  { "", "", "float FPUL,<FREG_N>", "1111nnnn00101101",
    /* start-sanitize-sh4 */
    "if (FPSCR_PR)",
    "  SET_DR (n, (double)FPUL);",
    "else",
    /* end-sanitize-sh4 */
    "{",
    "  SET_FR (n, (float)FPUL);",
    "}",
  },

  /* sh3e */
  { "", "", "fmac <FREG_0>,<FREG_M>,<FREG_N>", "1111nnnnmmmm1110",
    "SET_FR (n, FR(m) * FR(0) + FR(n));",
    "/* FIXME: check for DP and (n & 1) == 0? */",
  },

  /* sh3e */
  { "", "", "fmov <FREG_M>,<FREG_N>", "1111nnnnmmmm1100",
    /* start-sanitize-sh4 */
    "if (FPSCR_SZ) {",
    "  int ni = XD_TO_XF (n);",
    "  int mi = XD_TO_XF (m);",
    "  SET_XF (ni + 0, XF (mi + 0));",
    "  SET_XF (ni + 1, XF (mi + 1));",
    "}",
    "else",
    /* end-sanitize-sh4 */
    "{",
    "  SET_FR (n, FR (m));",
    "}",
  },
  /* sh3e */
  { "", "", "fmov.s <FREG_M>,@<REG_N>", "1111nnnnmmmm1010",
    /* start-sanitize-sh4 */
    "if (FPSCR_SZ) {",
    "  MA (2);",
    "  WDAT (R[n], m);",
    "}",
    "else",
    /* end-sanitize-sh4 */
    "{",
    "  MA (1);",
    "  WLAT (R[n], FI(m));",
    "}",
  },
  /* sh3e */
  { "", "", "fmov.s @<REG_M>,<FREG_N>", "1111nnnnmmmm1000",
    /* start-sanitize-sh4 */
    "if (FPSCR_SZ) {",
    "  MA (2);",
    "  RDAT (R[m], n);",
    "}",
    "else",
    /* end-sanitize-sh4 */
    "{",
    "  MA (1);",
    "  SET_FI(n, RLAT(R[m]));",
    "}",
  },
  /* sh3e */
  { "", "", "fmov.s @<REG_M>+,<FREG_N>", "1111nnnnmmmm1001",
    /* start-sanitize-sh4 */
    "if (FPSCR_SZ) {",
    "  MA (2);",
    "  RDAT (R[m], n);",
    "  R[m] += 8;",
    "}",
    "else",
    /* end-sanitize-sh4 */
    "{",
    "  MA (1);",
    "  SET_FI (n, RLAT (R[m]));",
    "  R[m] += 4;",
    "}",
  },
  /* sh3e */
  { "", "", "fmov.s <FREG_M>,@-<REG_N>", "1111nnnnmmmm1011",
    /* start-sanitize-sh4 */
    "if (FPSCR_SZ) {",
    "  MA (2);",
    "  R[n] -= 8;",
    "  WDAT (R[n], m);",
    "}",
    "else",
    /* end-sanitize-sh4 */
    "{",
    "  MA (1);",
    "  R[n] -= 4;",
    "  WLAT (R[n], FI(m));",
    "}",
  },
  /* sh3e */
  { "", "", "fmov.s @(R0,<REG_M>),<FREG_N>", "1111nnnnmmmm0110",
    /* start-sanitize-sh4 */
    "if (FPSCR_SZ) {",
    "  MA (2);",
    "  RDAT (R[0]+R[m], n);",
    "}",
    "else",
    /* end-sanitize-sh4 */
    "{",
    "  MA (1);",
    "  SET_FI(n, RLAT(R[0] + R[m]));",
    "}",
  },
  /* sh3e */
  { "", "", "fmov.s <FREG_M>,@(R0,<REG_N>)", "1111nnnnmmmm0111",
    /* start-sanitize-sh4 */
    "if (FPSCR_SZ) {",
    "  MA (2);",
    "  WDAT (R[0]+R[n], m);",
    "}",
    "else",
    /* end-sanitize-sh4 */
    "{",
    "  MA (1);",
    "  WLAT((R[0]+R[n]), FI(m));",
    "}",
  },

  /* start-sanitize-sh4 */
  /* See fmov instructions above for move to/from extended fp
     registers */
  /* end-sanitize-sh4 */

  /* sh3e */
  { "", "", "fmul <FREG_M>,<FREG_N>", "1111nnnnmmmm0010",
    "FP_OP(n, *, m);",
  },

  /* sh3e */
  { "", "", "fneg <FREG_N>", "1111nnnn01001101",
    "FP_UNARY(n, -);",
  },

  /* start-sanitize-sh4 */
  { "", "", "frchg", "1111101111111101",
    "SET_FPSCR (GET_FPSCR() ^ FPSCR_MASK_FR);",
  },
  /* end-sanitize-sh4 */

  /* start-sanitize-sh4 */
  { "", "", "fschg", "1111001111111101",
    "SET_FPSCR (GET_FPSCR() ^ FPSCR_MASK_SZ);",
  },
  /* end-sanitize-sh4 */

  /* sh3e */
  { "", "", "fsqrt <FREG_N>", "1111nnnn01101101",
    "FP_UNARY(n, sqrt);",
  },

  /* sh3e */
  { "", "", "fsub <FREG_M>,<FREG_N>", "1111nnnnmmmm0001",
    "FP_OP(n, -, m);",
  },

  /* sh3e */
  { "", "", "ftrc <FREG_N>, FPUL", "1111nnnn00111101",
    /* start-sanitize-sh4 */
    "if (FPSCR_PR) {",
    "  if (DR(n) != DR(n)) /* NaN */",
    "    FPUL = 0x80000000;",
    "  else",
    "    FPUL =  (int)DR(n);",
    "}",
    "else",
    /* end-sanitize-sh4 */
    "if (FR(n) != FR(n)) /* NaN */",
    "  FPUL = 0x80000000;",
    "else",
    "  FPUL = (int)FR(n);",
  },

  /* start-sanitize-sh4 */
#if 0
  /* ftst/nan would appear to have been dropped */
  /* end-sanitize-sh4 */
  /* sh3e */
  { "", "", "ftst/nan <FREG_N>", "1111nnnn01111101",
    "SET_SR_T (isnan (FR(n)));",
  },
  /* start-sanitize-sh4 */
#endif
  /* end-sanitize-sh4 */

  /* sh3e */
  { "", "", "fsts FPUL,<FREG_N>", "1111nnnn00001101",
    "char buf[4];",
    "*(int *)buf = FPUL;",
    "SET_FR (n, *(float *)buf);",
  },

  { "", "n", "jmp @<REG_N>", "0100nnnn00101011",
    "nia = R[n];",
    "Delay_Slot (PC + 2);",
  },

  { "", "n", "jsr @<REG_N>", "0100nnnn00001011",
    "PR = PC + 4;",
    "nia = R[n];",
    "if (~doprofile)",
    "  gotcall (PR, nia);",
    "Delay_Slot (PC + 2);",
  },

  { "", "n", "ldc <REG_N>,GBR", "0100nnnn00011110",
    "GBR = R[n];",
    "/* FIXME: user mode */",
  },
  { "", "n", "ldc <REG_N>,SR", "0100nnnn00001110",
    "SET_SR (R[n]);",
    "/* FIXME: user mode */",
  },
  { "", "n", "ldc <REG_N>,VBR", "0100nnnn00101110",
    "VBR = R[n];",
    "/* FIXME: user mode */",
  },
  { "", "n", "ldc <REG_N>,SSR", "0100nnnn00111110",
    "SSR = R[n];",
    "/* FIXME: user mode */",
  },
  { "", "n", "ldc <REG_N>,SPC", "0100nnnn01001110",
    "SPC = R[n];",
    "/* FIXME: user mode */",
  },
  /* start-sanitize-sh4 */
#if 0
  { "", "n", "ldc <REG_N>,DBR", "0100nnnn11111010",
    "DBR = R[n];",
    "/* FIXME: user mode */",
  },
#endif
  /* end-sanitize-sh4 */
  { "", "n", "ldc <REG_N>,R0_BANK", "0100nnnn10001110",
    "SET_Rn_BANK (0, R[n]);",
    "/* FIXME: user mode */",
  },
  { "", "n", "ldc <REG_N>,R1_BANK", "0100nnnn10011110",
    "SET_Rn_BANK (1, R[n]);",
    "/* FIXME: user mode */",
  },
  { "", "n", "ldc <REG_N>,R2_BANK", "0100nnnn10101110",
    "SET_Rn_BANK (2, R[n]);",
    "/* FIXME: user mode */",
  },
  { "", "n", "ldc <REG_N>,R3_BANK", "0100nnnn10111110",
    "SET_Rn_BANK (3, R[n]);",
    "/* FIXME: user mode */",
  },
  { "", "n", "ldc <REG_N>,R4_BANK", "0100nnnn11001110",
    "SET_Rn_BANK (4, R[n]);",
    "/* FIXME: user mode */",
  },
  { "", "n", "ldc <REG_N>,R5_BANK", "0100nnnn11011110",
    "SET_Rn_BANK (5, R[n]);",
    "/* FIXME: user mode */",
  },
  { "", "n", "ldc <REG_N>,R6_BANK", "0100nnnn11101110",
    "SET_Rn_BANK (6, R[n]);",
    "/* FIXME: user mode */",
  },
  { "", "n", "ldc <REG_N>,R7_BANK", "0100nnnn11111110",
    "SET_Rn_BANK (7, R[n]);",
    "/* FIXME: user mode */",
  },
  { "", "n", "ldc.l @<REG_N>+,GBR", "0100nnnn00010111",
    "MA (1);",
    "GBR = RLAT (R[n]);",
    "R[n] += 4;",
    "/* FIXME: user mode */",
  },
  { "", "n", "ldc.l @<REG_N>+,SR", "0100nnnn00000111",
    "MA (1);",
    "SET_SR (RLAT (R[n]));",
    "R[n] += 4;",
    "/* FIXME: user mode */",
  },
  { "", "n", "ldc.l @<REG_N>+,VBR", "0100nnnn00100111",
    "MA (1);",
    "VBR = RLAT (R[n]);",
    "R[n] += 4;",
    "/* FIXME: user mode */",
  },
  { "", "n", "ldc.l @<REG_N>+,SSR", "0100nnnn00110111",
    "MA (1);",
    "SSR = RLAT (R[n]);",
    "R[n] += 4;",
    "/* FIXME: user mode */",
  },
  { "", "n", "ldc.l @<REG_N>+,SPC", "0100nnnn01000111",
    "MA (1);",
    "SPC = RLAT (R[n]);",
    "R[n] += 4;",
    "/* FIXME: user mode */",
  },
  /* start-sanitize-sh4 */
#if 0
  { "", "n", "ldc.l @<REG_N>+,DBR", "0100nnnn11110110",
    "MA (1);",
    "DBR = RLAT (R[n]);",
    "R[n] += 4;",
    "/* FIXME: user mode */",
  },
#endif
  /* end-sanitize-sh4 */
  { "", "n", "ldc.l @<REG_N>+,R0_BANK", "0100nnnn10000111",
    "MA (1);",
    "SET_Rn_BANK (0, RLAT (R[n]));",
    "R[n] += 4;",
    "/* FIXME: user mode */",
  },
  { "", "n", "ldc.l @<REG_N>+,R1_BANK", "0100nnnn10010111",
    "MA (1);",
    "SET_Rn_BANK (1, RLAT (R[n]));",
    "R[n] += 4;",
    "/* FIXME: user mode */",
  },
  { "", "n", "ldc.l @<REG_N>+,R2_BANK", "0100nnnn10100111",
    "MA (1);",
    "SET_Rn_BANK (2, RLAT (R[n]));",
    "R[n] += 4;",
    "/* FIXME: user mode */",
  },
  { "", "n", "ldc.l @<REG_N>+,R3_BANK", "0100nnnn10110111",
    "MA (1);",
    "SET_Rn_BANK (3, RLAT (R[n]));",
    "R[n] += 4;",
    "/* FIXME: user mode */",
  },
  { "", "n", "ldc.l @<REG_N>+,R4_BANK", "0100nnnn11000111",
    "MA (1);",
    "SET_Rn_BANK (4, RLAT (R[n]));",
    "R[n] += 4;",
    "/* FIXME: user mode */",
  },
  { "", "n", "ldc.l @<REG_N>+,R5_BANK", "0100nnnn11010111",
    "MA (1);",
    "SET_Rn_BANK (5, RLAT (R[n]));",
    "R[n] += 4;",
    "/* FIXME: user mode */",
  },
  { "", "n", "ldc.l @<REG_N>+,R6_BANK", "0100nnnn11100111",
    "MA (1);",
    "SET_Rn_BANK (6, RLAT (R[n]));",
    "R[n] += 4;",
    "/* FIXME: user mode */",
  },
  { "", "n", "ldc.l @<REG_N>+,R7_BANK", "0100nnnn11110111",
    "MA (1);",
    "SET_Rn_BANK (7, RLAT (R[n]));",
    "R[n] += 4;",
    "/* FIXME: user mode */",
  },

  /* sh3e */
  { "", "", "lds <REG_N>,FPUL", "0100nnnn01011010",
    "FPUL = R[n];",
  },
  /* sh3e */
  { "", "", "lds.l @<REG_N>+,FPUL", "0100nnnn01010110",
    "MA (1);",
    "FPUL = RLAT(R[n]);",
    "R[n] += 4;",
  },
  /* sh3e */
  { "", "", "lds <REG_N>,FPSCR", "0100nnnn01101010",
    "SET_FPSCR(R[n]);",
  },
  /* sh3e */
  { "", "", "lds.l @<REG_N>+,FPSCR", "0100nnnn01100110",
    "MA (1);",
    "SET_FPSCR (RLAT(R[n]));",
    "R[n] += 4;",
  },

  { "", "n", "lds <REG_N>,MACH", "0100nnnn00001010",
    "MACH = R[n];",
  },
  { "", "n", "lds <REG_N>,MACL", "0100nnnn00011010",
    "MACL= R[n];",
  },
  { "", "n", "lds <REG_N>,PR", "0100nnnn00101010",
    "PR = R[n];",
  },
  { "", "n", "lds.l @<REG_N>+,MACH", "0100nnnn00000110",
    "MA (1);",
    "MACH = SEXT(RLAT(R[n]));",
    "R[n]+=4;",
  },
  { "", "n", "lds.l @<REG_N>+,MACL", "0100nnnn00010110",
    "MA (1);",
    "MACL = RLAT(R[n]);",
    "R[n]+=4;",
  },
  { "", "n", "lds.l @<REG_N>+,PR", "0100nnnn00100110",
    "MA (1);",
    "PR = RLAT(R[n]);",
    "R[n]+=4;;",
  },

  { "", "", "ldtlb", "0000000000111000",
    "/* FIXME: XXX*/ abort();",
  },

  { "", "nm", "mac.l @<REG_M>+,@<REG_N>+", "0000nnnnmmmm1111",
    "trap (255,R0,memory,maskl,maskw,little_endian);",
    "/* FIXME: mac.l support */",
  },

  { "", "nm", "mac.w @<REG_M>+,@<REG_N>+", "0100nnnnmmmm1111",
    "macw(R0,memory,n,m);",
  },

  { "n", "", "mov #<imm>,<REG_N>", "1110nnnni8*1....",
    "R[n] = SEXT(i);",
  },
  { "n", "m", "mov <REG_M>,<REG_N>", "0110nnnnmmmm0011",
    "R[n] = R[m];",
  },

  { "0", "", "mov.b @(<disp>,GBR),R0", "11000100i8*1....",
    "MA (1);",
    "R0 = RSBAT (i + GBR);",
    "L (0);",
  },
  { "0", "m", "mov.b @(<disp>,<REG_M>),R0", "10000100mmmmi4*1",
    "MA (1);",
    "R0 = RSBAT (i + R[m]);",
    "L (0);",
  },
  { "n", "0m", "mov.b @(R0,<REG_M>),<REG_N>", "0000nnnnmmmm1100",
    "MA (1);",
    "R[n] = RSBAT (R0 + R[m]);",
    "L (n);",
  },
  { "n", "m", "mov.b @<REG_M>+,<REG_N>", "0110nnnnmmmm0100",
    "MA (1);",
    "R[n] = RSBAT (R[m]);",
    "R[m] += 1;",
    "L (n);",
  },
  { "", "mn", "mov.b <REG_M>,@<REG_N>", "0010nnnnmmmm0000",
    "MA (1);",
    "WBAT (R[n], R[m]);",
  },
  { "", "0", "mov.b R0,@(<disp>,GBR)", "11000000i8*1....",
    "MA (1);",
    "WBAT (i + GBR, R0);",
  },
  { "", "m0", "mov.b R0,@(<disp>,<REG_M>)", "10000000mmmmi4*1",
    "MA (1);",
    "WBAT (i + R[m], R0);",
  },
  { "", "mn0", "mov.b <REG_M>,@(R0,<REG_N>)", "0000nnnnmmmm0100",
    "MA (1);",
    "WBAT (R[n] + R0, R[m]);",
  },
  { "", "nm", "mov.b <REG_M>,@-<REG_N>", "0010nnnnmmmm0100",
    "MA (1);",
    "R[n] -= 1;",
    "WBAT (R[n], R[m]);",
  },
  { "n", "m", "mov.b @<REG_M>,<REG_N>", "0110nnnnmmmm0000",
    "MA (1);",
    "R[n] = RSBAT (R[m]);",
    "L (n);",
  },

  { "0", "", "mov.l @(<disp>,GBR),R0", "11000110i8*4....",
    "MA (1);",
    "R0 = RLAT (i + GBR);",
    "L (0);",
  },
  { "n", "", "mov.l @(<disp>,PC),<REG_N>", "1101nnnni8p4....",
    "MA (1);",
    "R[n] = RLAT((PC & ~3) + 4 + i);",
    "L (n);",
  },
  { "n", "m", "mov.l @(<disp>,<REG_M>),<REG_N>", "0101nnnnmmmmi4*4",
    "MA (1);",
    "R[n] = RLAT (i + R[m]);",
    "L (n);",
  },
  { "n", "m0", "mov.l @(R0,<REG_M>),<REG_N>", "0000nnnnmmmm1110",
    "MA (1);",
    "R[n] = RLAT (R0 + R[m]);",
    "L (n);",
  },
  { "nm", "m", "mov.l @<REG_M>+,<REG_N>", "0110nnnnmmmm0110",
    "MA (1);",
    "R[n] = RLAT (R[m]);",
    "R[m] += 4;",
    "L (n);",
  },
  { "n", "m", "mov.l @<REG_M>,<REG_N>", "0110nnnnmmmm0010",
    "MA (1);",
    "R[n] = RLAT (R[m]);",
    "L (n);",
  },
  { "", "0", "mov.l R0,@(<disp>,GBR)", "11000010i8*4....",
    "MA (1);",
    "WLAT (i + GBR, R0);",
  },
  { "", "nm", "mov.l <REG_M>,@(<disp>,<REG_N>)", "0001nnnnmmmmi4*4",
    "MA (1);",
    "WLAT (i + R[n], R[m]);",
  },
  { "", "nm0", "mov.l <REG_M>,@(R0,<REG_N>)", "0000nnnnmmmm0110",
    "MA (1);",
    "WLAT (R0 + R[n], R[m]);",
  },
  { "", "nm", "mov.l <REG_M>,@-<REG_N>", "0010nnnnmmmm0110",
    "MA (1) ;",
    "R[n] -= 4;",
    "WLAT (R[n], R[m]);",
  },
  { "", "nm", "mov.l <REG_M>,@<REG_N>", "0010nnnnmmmm0010",
    "MA (1);",
    "WLAT (R[n], R[m]);",
  },

  { "0", "", "mov.w @(<disp>,GBR),R0", "11000101i8*2....",
    "MA (1)",
    ";R0 = RSWAT (i + GBR);",
    "L (0);",
  },
  { "n", "", "mov.w @(<disp>,PC),<REG_N>", "1001nnnni8p2....",
    "MA (1);",
    "R[n] = RSWAT (PC + 4 + i);",
    "L (n);",
  },
  { "0", "m", "mov.w @(<disp>,<REG_M>),R0", "10000101mmmmi4*2",
    "MA (1);",
    "R0 = RSWAT (i + R[m]);",
    "L (0);",
  },
  { "n", "m0", "mov.w @(R0,<REG_M>),<REG_N>", "0000nnnnmmmm1101",
    "MA (1);",
    "R[n] = RSWAT (R0 + R[m]);",
    "L (n);",
  },
  { "nm", "n", "mov.w @<REG_M>+,<REG_N>", "0110nnnnmmmm0101",
    "MA (1);",
    "R[n] = RSWAT (R[m]);",
    "R[m] += 2;",
    "L (n);",
  },
  { "n", "m", "mov.w @<REG_M>,<REG_N>", "0110nnnnmmmm0001",
    "MA (1);",
    "R[n] = RSWAT (R[m]);",
    "L (n);",
  },
  { "", "0", "mov.w R0,@(<disp>,GBR)", "11000001i8*2....",
    "MA (1);",
    "WWAT (i + GBR, R0);",
  },
  { "", "0m", "mov.w R0,@(<disp>,<REG_M>)", "10000001mmmmi4*2",
    "MA (1);",
    "WWAT (i + R[m], R0);",
  },
  { "", "m0n", "mov.w <REG_M>,@(R0,<REG_N>)", "0000nnnnmmmm0101",
    "MA (1);",
    "WWAT (R0 + R[n], R[m]);",
  },
  { "n", "mn", "mov.w <REG_M>,@-<REG_N>", "0010nnnnmmmm0101",
    "MA (1);",
    "R[n] -= 2;",
    "WWAT (R[n], R[m]);",
  },
  { "", "nm", "mov.w <REG_M>,@<REG_N>", "0010nnnnmmmm0001",
    "MA (1);",
    "WWAT (R[n], R[m]);",
  },

  { "0", "", "mova @(<disp>,PC),R0", "11000111i8p4....",
    "R0 = ((i + 4 + PC) & ~0x3);",
  },

  /* start-sanitize-sh4 */
  { "0", "", "movca.l @R0, <REG_N>", "0000nnnn11000011",
    "/* FIXME: Not implemented */",
    "saved_state.asregs.exception = SIGILL;",
  },
  /* end-sanitize-sh4 */

  { "n", "", "movt <REG_N>", "0000nnnn00101001",
    "R[n] = T;",
  },

  { "", "mn", "mul.l <REG_M>,<REG_N>", "0000nnnnmmmm0111",
    "MACL = ((int)R[n]) * ((int)R[m]);",
  },
#if 0
  { "", "nm", "mul.l <REG_M>,<REG_N>", "0000nnnnmmmm0111",
    "MACL = R[n] * R[m];",
  },
#endif

  /* muls.w - see muls */
  { "", "mn", "muls <REG_M>,<REG_N>", "0010nnnnmmmm1111",
    "MACL = ((int)(short)R[n]) * ((int)(short)R[m]);",
  },

  /* mulu.w - see mulu */
  { "", "mn", "mulu <REG_M>,<REG_N>", "0010nnnnmmmm1110",
    "MACL = (((unsigned int)(unsigned short)R[n])",
    "        * ((unsigned int)(unsigned short)R[m]));",
  },

  { "n", "m", "neg <REG_M>,<REG_N>", "0110nnnnmmmm1011",
    "R[n] = - R[m];",
  },

  { "n", "m", "negc <REG_M>,<REG_N>", "0110nnnnmmmm1010",
    "ult = -T;",
    "SET_SR_T (ult > 0);",
    "R[n] = ult - R[m];",
    "SET_SR_T (T || (R[n] > ult));",
  },

  { "", "", "nop", "0000000000001001",
    "/* nop */",
  },

  { "n", "m", "not <REG_M>,<REG_N>", "0110nnnnmmmm0111",
    "R[n] = ~R[m];",
  },

  /* start-sanitize-sh4 */
  { "0", "", "ocbi @<REG_N>", "0000nnnn10010011",
    "/* FIXME: Not implemented */",
    "saved_state.asregs.exception = SIGILL;",
  },
  /* end-sanitize-sh4 */

  /* start-sanitize-sh4 */
  { "0", "", "ocbp @<REG_N>", "0000nnnn10100011",
    "/* FIXME: Not implemented */",
    "saved_state.asregs.exception = SIGILL;",
  },
  /* end-sanitize-sh4 */

  /* start-sanitize-sh4 */
  { "", "n", "ocbwb @<REG_N>", "0000nnnn10110011",
    "RSBAT (R[n]); /* Take exceptions like byte load.  */",
    "/* FIXME: Cache not implemented */",
  },
  /* end-sanitize-sh4 */

  { "0", "", "or #<imm>,R0", "11001011i8*1....",
    "R0 |= i;",
  },
  { "n", "m", "or <REG_M>,<REG_N>", "0010nnnnmmmm1011",
    "R[n] |= R[m];",
  },
  { "", "0", "or.b #<imm>,@(R0,GBR)", "11001111i8*1....",
    "MA (1);",
    "WBAT (R0 + GBR, (RBAT (R0 + GBR) | i));",
  },

  { "", "n", "pref @<REG_N>", "0000nnnn10000011",
    "/* Except for the effect on the cache - which is not simulated -",
    "   this is like a nop.  */",
  },

  { "n", "n", "rotcl <REG_N>", "0100nnnn00100100",
    "ult = R[n] < 0;",
    "R[n] = (R[n] << 1) | T;",
    "SET_SR_T (ult);",
  },

  { "n", "n", "rotcr <REG_N>", "0100nnnn00100101",
    "ult = R[n] & 1;",
    "R[n] = (UR[n] >> 1) | (T << 31);",
    "SET_SR_T (ult);",
  },

  { "n", "n", "rotl <REG_N>", "0100nnnn00000100",
    "SET_SR_T (R[n] < 0);",
    "R[n] <<= 1;",
    "R[n] |= T;",
  },

  { "n", "n", "rotr <REG_N>", "0100nnnn00000101",
    "SET_SR_T (R[n] & 1);",
    "R[n] = UR[n] >> 1;",
    "R[n] |= (T << 31);",
  },

  { "", "", "rte", "0000000000101011", 
#if 0
    /* SH-[12] */
    "int tmp = PC;",
    "nia = RLAT (R[15]) + 2;",
    "R[15] += 4;",
    "SET_SR (RLAT (R[15]) & 0x3f3);",
    "R[15] += 4;",
    "Delay_Slot (PC + 2);",
#else
    "nia = SPC;",
    "SET_SR (SSR);",
    "Delay_Slot (PC + 2);",
#endif
  },

  { "", "", "rts", "0000000000001011",
    "nia = PR;",
    "Delay_Slot (PC + 2);",
  },

  { "", "", "sets", "0000000001011000",
    "SET_SR_S (1);",
  },

  { "", "", "sett", "0000000000011000",
    "SET_SR_T (1);",
  },

  { "n", "mn", "shad <REG_M>,<REG_N>", "0100nnnnmmmm1100",
    "R[n] = (R[m] < 0) ? (R[n] >> ((-R[m])&0x1f)) : (R[n] << (R[m] & 0x1f));",
  },

  { "n", "n", "shal <REG_N>", "0100nnnn00100000",
    "SET_SR_T (R[n] < 0);",
    "R[n] <<= 1;",
  },

  { "n", "n", "shar <REG_N>", "0100nnnn00100001",
    "SET_SR_T (R[n] & 1);",
    "R[n] = R[n] >> 1;",
  },

  { "n", "mn", "shld <REG_M>,<REG_N>", "0100nnnnmmmm1101",
    "R[n] = (R[m] < 0) ? (UR[n] >> ((-R[m])&0x1f)): (R[n] << (R[m] & 0x1f));",
  },

  { "n", "n", "shll <REG_N>", "0100nnnn00000000",
    "SET_SR_T (R[n] < 0);",
    "R[n] <<= 1;",
  },

  { "n", "n", "shll2 <REG_N>", "0100nnnn00001000",
    "R[n] <<= 2;",
  },
  { "n", "n", "shll8 <REG_N>", "0100nnnn00011000",
    "R[n] <<= 8;",
  },
  { "n", "n", "shll16 <REG_N>", "0100nnnn00101000",
    "R[n] <<= 16;",
  },

  { "n", "n", "shlr <REG_N>", "0100nnnn00000001",
    "SET_SR_T (R[n] & 1);",
    "R[n] = UR[n] >> 1;",
  },

  { "n", "n", "shlr2 <REG_N>", "0100nnnn00001001",
    "R[n] = UR[n] >> 2;",
  },
  { "n", "n", "shlr8 <REG_N>", "0100nnnn00011001",
    "R[n] = UR[n] >> 8;",
  },
  { "n", "n", "shlr16 <REG_N>", "0100nnnn00101001",
    "R[n] = UR[n] >> 16;",
  },

  { "", "", "sleep", "0000000000011011",
    "trap (0xc3, R0, memory, maskl, maskw, little_endian);",
    "nia = PC;",
  },

  { "n", "", "stc GBR,<REG_N>", "0000nnnn00010010",
    "R[n] = GBR;",
  },
  { "n", "", "stc SR,<REG_N>",  "0000nnnn00000010",
    "R[n] = GET_SR ();",
  },
  { "n", "", "stc VBR,<REG_N>", "0000nnnn00100010",
    "R[n] = VBR;",
  },
  { "n", "", "stc SSR,<REG_N>", "0000nnnn00110010",
    "R[n] = SSR;",
  },
  { "n", "", "stc SPC,<REG_N>", "0000nnnn01000010",
    "R[n] = SPC;",
  },
  /* start-sanitize-sh4 */
#if 0
  { "n", "", "stc SGR,<REG_N>", "0000nnnn00111010",
    "R[n] = SGR;",
  },
  { "n", "", "stc DBR,<REG_N>", "0000nnnn11111010",
    "R[n] = DBR;",
  },
#endif
  /* end-sanitize-sh4 */
  { "n", "", "stc R0_BANK,<REG_N>", "0000nnnn10000010",
    "R[n] = Rn_BANK (0);",
  },
  { "n", "", "stc R1_BANK,<REG_N>", "0000nnnn10010010",
    "R[n] = Rn_BANK (1);",
  },
  { "n", "", "stc R2_BANK,<REG_N>", "0000nnnn10100010",
    "R[n] = Rn_BANK (2);",
  },
  { "n", "", "stc R3_BANK,<REG_N>", "0000nnnn10110010",
    "R[n] = Rn_BANK (3);",
  },
  { "n", "", "stc R4_BANK,<REG_N>", "0000nnnn11000010",
    "R[n] = Rn_BANK (4);",
  },
  { "n", "", "stc R5_BANK,<REG_N>", "0000nnnn11010010",
    "R[n] = Rn_BANK (5);",
  },
  { "n", "", "stc R6_BANK,<REG_N>", "0000nnnn11100010",
    "R[n] = Rn_BANK (6);",
  },
  { "n", "", "stc R7_BANK,<REG_N>", "0000nnnn11110010",
    "R[n] = Rn_BANK (7);",
  },
  { "n", "n", "stc.l GBR,@-<REG_N>", "0100nnnn00010011",
    "MA (1);",
    "R[n] -= 4;",
    "WLAT (R[n], GBR);;",
  },
  { "n", "n", "stc.l SR,@-<REG_N>",  "0100nnnn00000011",
    "MA (1);",
    "R[n] -= 4;",
    "WLAT (R[n], GET_SR());",
  },
  { "n", "n", "stc.l VBR,@-<REG_N>", "0100nnnn00100011",
    "MA (1);",
    "R[n] -= 4;",
    "WLAT (R[n], VBR);",
  },
  { "n", "n", "stc.l SSR,@-<REG_N>", "0100nnnn00110011",
    "MA (1);",
    "R[n] -= 4;",
    "WLAT (R[n], SSR);",
  },
  { "n", "n", "stc.l SPC,@-<REG_N>", "0100nnnn01000011",
    "MA (1);",
    "R[n] -= 4;",
    "WLAT (R[n], SPC);",
  },
  /* start-sanitize-sh4 */
#if 0
  { "n", "n", "stc.l SGR,@-<REG_N>", "0100nnnn00110010",
    "MA (1);",
    "R[n] -= 4;",
    "WLAT (R[n], SGR);",
  },
  { "n", "n", "stc.l DBR,@-<REG_N>", "0100nnnn11110010",
    "MA (1);",
    "R[n] -= 4;",
    "WLAT (R[n], DBR);",
  },
#endif
  /* end-sanitize-sh4 */
  { "n", "", "stc R0_BANK,@-<REG_N>", "0100nnnn10000010",
    "MA (1);",
    "R[n] -= 4;",
    "WLAT (R[n], Rn_BANK (0));",
  },
  { "n", "", "stc R1_BANK,@-<REG_N>", "0100nnnn10010010",
    "MA (1);",
    "R[n] -= 4;",
    "WLAT (R[n], Rn_BANK (1));",
  },
  { "n", "", "stc R2_BANK,@-<REG_N>", "0100nnnn10100010",
    "MA (1);",
    "R[n] -= 4;",
    "WLAT (R[n], Rn_BANK (2));",
  },
  { "n", "", "stc R3_BANK,@-<REG_N>", "0100nnnn10110010",
    "MA (1);",
    "R[n] -= 4;",
    "WLAT (R[n], Rn_BANK (3));",
  },
  { "n", "", "stc R4_BANK,@-<REG_N>", "0100nnnn11000010",
    "MA (1);",
    "R[n] -= 4;",
    "WLAT (R[n], Rn_BANK (4));",
  },
  { "n", "", "stc R5_BANK,@-<REG_N>", "0100nnnn11010010",
    "MA (1);",
    "R[n] -= 4;",
    "WLAT (R[n], Rn_BANK (5));",
  },
  { "n", "", "stc R6_BANK,@-<REG_N>", "0100nnnn11100010",
    "MA (1);",
    "R[n] -= 4;",
    "WLAT (R[n], Rn_BANK (6));",
  },
  { "n", "", "stc R7_BANK,@-<REG_N>", "0100nnnn11110010",
    "MA (1);",
    "R[n] -= 4;",
    "WLAT (R[n], Rn_BANK (7));",
  },

  /* sh3e */
  { "", "", "sts FPUL,<REG_N>", "0000nnnn01011010",
    "R[n] = FPUL;",
  },
  /* sh3e */
  { "", "", "sts.l FPUL,@-<REG_N>", "0100nnnn01010010",
    "MA (1);",
    "R[n] -= 4;",
    "WLAT (R[n], FPUL);",
  },
  /* sh3e */
  { "", "", "sts FPSCR,<REG_N>", "0000nnnn01101010",
    "R[n] = GET_FPSCR ();",
  },
  /* sh3e */
  { "", "", "sts.l FPSCR,@-<REG_N>", "0100nnnn01100010",
    "MA (1);",
    "R[n] -= 4;",
    "WLAT (R[n], GET_FPSCR ());",
  },

  { "n", "", "sts MACH,<REG_N>", "0000nnnn00001010",
    "R[n] = MACH;",
  },
  { "n", "", "sts MACL,<REG_N>", "0000nnnn00011010",
    "R[n] = MACL;",
  },
  { "n", "", "sts PR,<REG_N>", "0000nnnn00101010",
    "R[n] = PR;",
  },
  { "n", "n", "sts.l MACH,@-<REG_N>", "0100nnnn00000010",
    "MA (1);",
    "R[n] -= 4;",
    "WLAT (R[n], MACH);",
  },
  { "n", "n", "sts.l MACL,@-<REG_N>", "0100nnnn00010010",
    "MA (1);",
    "R[n] -= 4;",
    "WLAT (R[n], MACL);",
  },
  { "n", "n", "sts.l PR,@-<REG_N>", "0100nnnn00100010",
    "MA (1);",
    "R[n] -= 4;",
    "WLAT (R[n], PR);",
  },

  { "n", "nm", "sub <REG_M>,<REG_N>", "0011nnnnmmmm1000",
    "R[n] -= R[m];",
  },

  { "n", "nm", "subc <REG_M>,<REG_N>", "0011nnnnmmmm1010",
    "ult = R[n] - T;",
    "SET_SR_T (ult > R[n]);",
    "R[n] = ult - R[m];",
    "SET_SR_T (T || (R[n] > ult));",
  },

  { "n", "nm", "subv <REG_M>,<REG_N>", "0011nnnnmmmm1011",
    "ult = R[n] - R[m];",
    "SET_SR_T (((R[n] ^ R[m]) & (ult ^ R[n])) >> 31);",
    "R[n] = ult;",
  },

  { "n", "nm", "swap.b <REG_M>,<REG_N>", "0110nnnnmmmm1000",
    "R[n] = ((R[m] & 0xffff0000)",
    "        | ((R[m] << 8) & 0xff00)",
    "        | ((R[m] >> 8) & 0x00ff));",
  },
  { "n", "nm", "swap.w <REG_M>,<REG_N>", "0110nnnnmmmm1001",
    "R[n] = (((R[m] << 16) & 0xffff0000)",
    "        | ((R[m] >> 16) & 0x00ffff));",
  },

  { "", "n", "tas.b @<REG_N>", "0100nnnn00011011",
    "MA (1);",
    "ult = RBAT(R[n]);",
    "SET_SR_T (ult == 0);",
    "WBAT(R[n],ult|0x80);",
  },

  { "0", "", "trapa #<imm>", "11000011i8*1....", 
#if 0
    /* SH-[12] */
    "long imm = 0xff & i;",
    "if (i==0xc3)",
    "  PC-=2;",
    "if (i<20||i==34||i==0xc3)",
    "  trap(i,R,memory,maskl,maskw,little_endian);",
    "else {",
    "  R[15]-=4;",
    "  WLAT(R[15],GET_SR());",
    "  R[15]-=4;",
    "  WLAT(R[15],PC+2);",
    "  PC=RLAT(VBR+(imm<<2))-2;",
    "}",
#else
    "if (i == 0xc3)",
    "  {",
    "    nia = PC;",
    "    trap (i, R, memory, maskl, maskw, little_endian);",
    "  }",
    "else if (i < 20 || i==34 || i==0xc3)",
    "  trap (i, R, memory, maskl, maskw, little_endian);",
    "else if (!SR_BL) {",
    "  /* FIXME: TRA = (imm << 2); */",
    "  SSR = GET_SR();",
    "  SPC = PC + 2;",
    "  SET_SR (GET_SR() | SR_MASK_MD | SR_MASK_BL | SR_MASK_RB);",
    "  /* FIXME: EXPEVT = 0x00000160; */",
    "  nia = VBR + 0x00000100;",
    "}",
#endif
  },

  { "", "mn", "tst <REG_M>,<REG_N>", "0010nnnnmmmm1000",
    "SET_SR_T ((R[n] & R[m]) == 0);",
  },
  { "", "0", "tst #<imm>,R0", "11001000i8*1....",
    "SET_SR_T ((R0 & i) == 0);",
  },
  { "", "0", "tst.b #<imm>,@(R0,GBR)", "11001100i8*1....",
    "MA (1);",
    "SET_SR_T ((RBAT (GBR+R0) & i) == 0);",
  },

  { "", "0", "xor #<imm>,R0", "11001010i8*1....",
    "R0 ^= i;",
  },
  { "n", "mn", "xor <REG_M>,<REG_N>", "0010nnnnmmmm1010",
    "R[n] ^= R[m];",
  },
  { "", "0", "xor.b #<imm>,@(R0,GBR)", "11001110i8*1....",
    "MA (1);",
    "ult = RBAT (GBR+R0);",
    "ult ^= i;",
    "WBAT (GBR + R0, ult);",
  },

  { "n", "nm", "xtrct <REG_M>,<REG_N>", "0010nnnnmmmm1101",
    "R[n] = (((R[n] >> 16) & 0xffff)",
    "        | ((R[m] << 16) & 0xffff0000));",
  },

  /* start-sanitize-sh4 */
#if 0
  { "divs.l <REG_M>,<REG_N>", "0100nnnnmmmm1110",
    "divl(0,R[n],R[m]);",
  },
  { "divu.l <REG_M>,<REG_N>", "0100nnnnmmmm1101",
    "divl(0,R[n],R[m]);",
  },
#endif
  /* end-sanitize-sh4 */

  {0, 0}};

/* Tables of things to put into enums for sh-opc.h */
static char *nibble_type_list[] =
{
  "HEX_0",
  "HEX_1",
  "HEX_2",
  "HEX_3",
  "HEX_4",
  "HEX_5",
  "HEX_6",
  "HEX_7",
  "HEX_8",
  "HEX_9",
  "HEX_A",
  "HEX_B",
  "HEX_C",
  "HEX_D",
  "HEX_E",
  "HEX_F",
  "REG_N",
  "REG_M",
  "BRANCH_12",
  "BRANCH_8",
  "DISP_8",
  "DISP_4",
  "IMM_4",
  "IMM_4BY2",
  "IMM_4BY4",
  "PCRELIMM_8BY2",
  "PCRELIMM_8BY4",
  "IMM_8",
  "IMM_8BY2",
  "IMM_8BY4",
  0
};
static
char *arg_type_list[] =
{
  "A_END",
  "A_BDISP12",
  "A_BDISP8",
  "A_DEC_M",
  "A_DEC_N",
  "A_DISP_GBR",
  "A_DISP_PC",
  "A_DISP_REG_M",
  "A_DISP_REG_N",
  "A_GBR",
  "A_IMM",
  "A_INC_M",
  "A_INC_N",
  "A_IND_M",
  "A_IND_N",
  "A_IND_R0_REG_M",
  "A_IND_R0_REG_N",
  "A_MACH",
  "A_MACL",
  "A_PR",
  "A_R0",
  "A_R0_GBR",
  "A_REG_M",
  "A_REG_N",
  "A_SR",
  "A_VBR",
  "A_SSR",
  "A_SPC",
  0,
};

static void
make_enum_list (name, s)
     char *name;
     char **s;
{
  int i = 1;
  printf ("typedef enum {\n");
  while (*s)
    {
      printf ("\t%s,\n", *s);
      s++;
      i++;
    }
  printf ("} %s;\n", name);
}

static int
qfunc (a, b)
     op *a;
     op *b;
{
  char bufa[9];
  char bufb[9];
  memcpy (bufa, a->code, 4);
  memcpy (bufa + 4, a->code + 12, 4);
  bufa[8] = 0;

  memcpy (bufb, b->code, 4);
  memcpy (bufb + 4, b->code + 12, 4);
  bufb[8] = 0;
  return (strcmp (bufa, bufb));
}

static void
sorttab ()
{
  op *p = tab;
  int len = 0;

  while (p->name)
    {
      p++;
      len++;
    }
  qsort (tab, len, sizeof (*p), qfunc);
}

static void
printonmatch (ptr, a, rep)
     char **ptr;
     char *a;
     char *rep;
{
  int l = strlen (a);
  if (strncmp (*ptr, a, l) == 0)
    {
      printf ("%s", rep);
      *ptr += l;
      if (**ptr)
	printf (",");
    }
}


static 
void
think (o)
     op *o;
{
  char *n;
  char *p;

  printf ("{\"");
  n = o->name;
  while (*n && *n != ' ')
    {
      printf ("%c", *n);
      n++;
    }
  printf ("\",{");

  p = n;

  if (!*p)
    {
      printf ("0");
    }
  while (*p)
    {
      while (*p == ',' || *p == ' ')
	p++;
      printonmatch (&p, "#<imm>", "A_IMM");
      printonmatch (&p, "R0", "A_R0");
      printonmatch (&p, "<REG_N>", "A_REG_N");
      printonmatch (&p, "@<REG_N>+", "A_INC_N");
      printonmatch (&p, "@<REG_N>", "A_IND_N");
      printonmatch (&p, "@-<REG_N>", "A_DEC_N");
      printonmatch (&p, "<REG_M>", " A_REG_M");
      printonmatch (&p, "@<REG_M>+", "A_INC_M");
      printonmatch (&p, "@<REG_M>", "A_IND_M");
      printonmatch (&p, "@-<REG_M>", "A_DEC_M");
      printonmatch (&p, "@(<disp>,PC)", "A_DISP_PC");
      printonmatch (&p, "@(<disp>,<REG_M>)", "A_DISP_REG_M");
      printonmatch (&p, "@(<disp>,<REG_N>)", "A_DISP_REG_N");
      printonmatch (&p, "@(R0,<REG_N>)", "A_IND_R0_REG_N");
      printonmatch (&p, "@(R0,<REG_M>)", "A_IND_R0_REG_M");
      printonmatch (&p, "@(<disp>,GBR)", "A_DISP_GBR");
      printonmatch (&p, "@(R0,GBR)", "A_R0_GBR");
      printonmatch (&p, "<bdisp8>", "A_BDISP8");
      printonmatch (&p, "<bdisp12>", "A_BDISP12");
      printonmatch (&p, "SR", "A_SR");
      printonmatch (&p, "GBR", "A_GBR");
      printonmatch (&p, "VBR", "A_VBR");
      printonmatch (&p, "SSR", "A_SSR");
      printonmatch (&p, "SPC", "A_SPC");
      printonmatch (&p, "MACH", "A_MACH");
      printonmatch (&p, "MACL", "A_MACL");
      printonmatch (&p, "PR", "A_PR");

    }
  printf ("},{");

  p = o->code;
  while (*p)
    {
      printonmatch (&p, "0000", "HEX_0");
      printonmatch (&p, "0001", "HEX_1");
      printonmatch (&p, "0010", "HEX_2");
      printonmatch (&p, "0011", "HEX_3");
      printonmatch (&p, "0100", "HEX_4");
      printonmatch (&p, "0101", "HEX_5");
      printonmatch (&p, "0110", "HEX_6");
      printonmatch (&p, "0111", "HEX_7");

      printonmatch (&p, "1000", "HEX_8");
      printonmatch (&p, "1001", "HEX_9");
      printonmatch (&p, "1010", "HEX_A");
      printonmatch (&p, "1011", "HEX_B");
      printonmatch (&p, "1100", "HEX_C");
      printonmatch (&p, "1101", "HEX_D");
      printonmatch (&p, "1110", "HEX_E");
      printonmatch (&p, "1111", "HEX_F");
      printonmatch (&p, "i8*1....", "IMM_8");
      printonmatch (&p, "i4*1", "IMM_4");
      printonmatch (&p, "i8p4....", "PCRELIMM_8BY4");
      printonmatch (&p, "i8p2....", "PCRELIMM_8BY2");
      printonmatch (&p, "i8*2....", "IMM_8BY2");
      printonmatch (&p, "i4*2", "IMM_4BY2");
      printonmatch (&p, "i8*4....", "IMM_8BY4");
      printonmatch (&p, "i4*4", "IMM_4BY4");
      printonmatch (&p, "i12.........", "BRANCH_12");
      printonmatch (&p, "i8p1....", "BRANCH_8");
      printonmatch (&p, "nnnn", "REG_N");
      printonmatch (&p, "mmmm", "REG_M");

    }
  printf ("}},\n");
}

static void
gengastab ()
{
  op *p;
  sorttab ();
  for (p = tab; p->name; p++)
    {
      printf ("%s %-30s\n", p->code, p->name);
    }


}


static void
genopc ()
{
  op *p;
  make_enum_list ("sh_nibble_type", nibble_type_list);
  make_enum_list ("sh_arg_type", arg_type_list);

  printf ("typedef struct {\n");
  printf ("char *name;\n");
  printf ("sh_arg_type arg[3];\n");
  printf ("sh_nibble_type nibbles[4];\n");
  printf ("} sh_opcode_info;\n");
  printf ("#ifdef DEFINE_TABLE\n");
  printf ("sh_opcode_info sh_table[]={\n");
  for (p = tab; p->name; p++)
    {
      printf ("\n/* %s %-20s*/", p->code, p->name);
      think (p);
    }
  printf ("0};\n");
  printf ("#endif\n");
}






/* Convert a string of 4 binary digits into an int */

static
int
bton (s)
     char *s;

{
  int n = 0;
  int v = 8;
  while (v)
    {
      if (*s == '1')
	n |= v;
      v >>= 1;
      s++;
    }
  return n;
}

static unsigned char table[1 << 16];

/* Take an opcode expand all varying fields in it out and fill all the
  right entries in 'table' with the opcode index*/

static void
expand_opcode (shift, val, i, s)
     int shift;
     int val;
     int i;
     char *s;
{
  int j;

  if (*s == 0)
    {
      table[val] = i;
    }
  else
    {
      switch (s[0])
	{

	case '0':
	case '1':
	  {

	    int n = bton (s);
	    if (n >= 0)
	      {
		expand_opcode (shift - 4, val | (n << shift), i, s + 4);
	      }
	    break;
	  }
	case 'n':
	case 'm':
	  for (j = 0; j < 16; j++)
	    {
	      expand_opcode (shift - 4, val | (j << shift), i, s + 4);

	    }
	  break;

	default:
	  for (j = 0; j < (1 << (shift + 4)); j++)
	    {
	      table[val | j] = i;
	    }
	}
    }
}

/* Print the jump table used to index an opcode into a switch
   statement entry. */

static void
dumptable ()
{
  int lump = 256;
  int online = 16;

  int i = 0;

  while (i < 1 << 16)
    {
      int j = 0;

      printf ("unsigned char sh_jump_table%x[%d]={\n", i, lump);

      while (j < lump)
	{
	  int k = 0;
	  while (k < online)
	    {
	      printf ("%2d", table[i + j + k]);
	      if (j + k < lump)
		printf (",");

	      k++;
	    }
	  j += k;
	  printf ("\n");
	}
      i += j;
      printf ("};\n");
    }

}


static void
filltable ()
{
  op *p;
  int index = 1;

  sorttab ();
  for (p = tab; p->name; p++)
    {
      p->index = index++;
      expand_opcode (12, 0, p->index, p->code);
    }
}

static void
gensim ()
{
  op *p;
  int j;

  printf ("{\n");
  printf ("  switch (jump_table[iword]) {\n");

  for (p = tab; p->name; p++)
    {
      int sextbit = -1;
      int needm = 0;
      int needn = 0;
      
      char *s = p->code;

      printf ("  /* %s %s */\n", p->name, p->code);
      printf ("  case %d:      \n", p->index);

      printf ("    {\n");
      while (*s)
	{
	  switch (*s)
	    {
	    case '0':
	    case '1':
	    case '.':
	      s += 4;
	      break;
	    case 'n':
	      printf ("      int n = (iword >>8) & 0xf;\n");
	      needn = 1;
	      s += 4;
	      break;
	    case 'm':
	      printf ("      int m = (iword >>4) & 0xf;\n");
	      needm = 1;
	      s += 4;

	      break;

	    case 'i':
	      printf ("      int i = (iword & 0x");

	      switch (s[1])
		{
		case '4':
		  printf ("f");
		  break;
		case '8':
		  printf ("ff");
		  break;
		case '1':
		  sextbit = 12;

		  printf ("fff");
		  break;
		}
	      printf (")");

	      switch (s[3])
		{
		case '1':
		  break;
		case '2':
		  printf ("<<1");
		  break;
		case '4':
		  printf ("<<2");
		  break;
		}
	      printf (";\n");
	      s += 4;
	    }
	}
      if (sextbit > 0)
	{
	  printf ("      i = (i ^ (1<<%d))-(1<<%d);\n",
		  sextbit - 1, sextbit - 1);
	}

      if (needm && needn)
	printf ("      TB(m,n);\n");  
      else if (needm)
	printf ("      TL(m);\n");
      else if (needn)
	printf ("      TL(n);\n");

      {
	/* Do the refs */
	char *r;
	for (r = p->refs; *r; r++)
	  {
	    if (*r == '0') printf("      CREF(0);\n"); 
	    if (*r == 'n') printf("      CREF(n);\n"); 
	    if (*r == 'm') printf("      CREF(m);\n"); 
	  }
      }

      printf ("      {\n");
      for (j = 0; j < MAX_NR_STUFF; j++)
	{
	  if (p->stuff[j])
	    {
	      printf ("        %s\n", p->stuff[j]);
	    }
	}
      printf ("      }\n");

      {
	/* Do the defs */
	char *r;
	for (r = p->defs; *r; r++) 
	  {
	    if (*r == '0') printf("      CDEF(0);\n"); 
	    if (*r == 'n') printf("      CDEF(n);\n"); 
	    if (*r == 'm') printf("      CDEF(m);\n"); 
	  }
      }

      printf ("      break;\n");
      printf ("    }\n");
    }
  printf ("  default:\n");
  printf ("    {\n");
  printf ("      saved_state.asregs.exception = SIGILL;\n");
  printf ("    }\n");
  printf ("  }\n");
  printf ("}\n");
}


static void
gendefines ()
{
  op *p;
  filltable();
  for (p = tab; p->name; p++)
    {
      char *s = p->name;
      printf ("#define OPC_");
      while (*s) {
	if (isupper(*s)) 
	  *s = tolower(*s);
	if (isalpha(*s)) printf("%c", *s);
	if (*s == ' ') printf("_");
	if (*s == '@') printf("ind_");
	if (*s == ',') printf("_");
	s++;
      }
      printf(" %d\n",p->index);
    }
}

int
main (ac, av)
     int ac;
     char **av;
{
  /* verify the table before anything else */
  {
    op *p;
    for (p = tab; p->name; p++)
      {
	/* check that the code field contains 16 bits */
	if (strlen (p->code) != 16)
	  {
	    fprintf (stderr, "Code `%s' length wrong (%d) for `%s'\n",
		     p->code, strlen (p->code), p->name);
	    abort ();
	  }
      }
  }

  /* now generate the requested data */
  if (ac > 1)
    {
      if (strcmp (av[1], "-t") == 0)
	{
	  gengastab ();
	}
      else if (strcmp (av[1], "-d") == 0)
	{
	  gendefines ();
	}
      else if (strcmp (av[1], "-s") == 0)
	{
	  filltable ();
	  dumptable ();

	}
      else if (strcmp (av[1], "-x") == 0)
	{
	  filltable ();
	  gensim ();
	}
    }
  else
    {
      genopc ();
    }
  return 0;
}