/* Code generator for the Hitachi H8/300 architecture simulator.
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/* Code generator for the Hitachi H8/300 architecture simulator.
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Written by Steve Chamberlain of Cygnus Support.
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Written by Steve Chamberlain of Cygnus Support.
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sac@cygnus.com
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sac@cygnus.com
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This file is part of H8/300 sim
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This file is part of H8/300 sim
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THIS SOFTWARE IS NOT COPYRIGHTED
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THIS SOFTWARE IS NOT COPYRIGHTED
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Cygnus offers the following for use in the public domain. Cygnus
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Cygnus offers the following for use in the public domain. Cygnus
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makes no warranty with regard to the software or it's performance
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makes no warranty with regard to the software or it's performance
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and the user accepts the software "AS IS" with all faults.
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and the user accepts the software "AS IS" with all faults.
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CYGNUS DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WITH REGARD TO
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CYGNUS DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WITH REGARD TO
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THIS SOFTWARE INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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THIS SOFTWARE INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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*/
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/* This program reads the H8/300 opcode table and writes out
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/* This program reads the H8/300 opcode table and writes out
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a large switch statement to understand the opcodes (with ifs if
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a large switch statement to understand the opcodes (with ifs if
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there is more than one opcode per case) and code to do the stuff */
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there is more than one opcode per case) and code to do the stuff */
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#include <stdio.h>
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#include <stdio.h>
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#define DEFINE_TABLE
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#define DEFINE_TABLE
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#define INSIM
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#define INSIM
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#include"opcode/h8300.h"
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#include"opcode/h8300.h"
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#define MAXSAME 140
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#define MAXSAME 140
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#define PTWO 256
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#define PTWO 256
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static struct h8_opcode *h8_opcodes_sorted[PTWO][MAXSAME];
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static struct h8_opcode *h8_opcodes_sorted[PTWO][MAXSAME];
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char *cs = "/*";
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char *cs = "/*";
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char *ce = "*/";
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char *ce = "*/";
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/* How to get at nibble n from the instruction */
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/* How to get at nibble n from the instruction */
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char *nibs[] =
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char *nibs[] =
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{
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{
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"foo",
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"foo",
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"(b0&0xf)",
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"(b0&0xf)",
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"((b1>>4)&0xf)",
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"((b1>>4)&0xf)",
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"((b1)&0xf)",
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"((b1)&0xf)",
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"((pc[1]>>12)&0xf)",
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"((pc[1]>>12)&0xf)",
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"((pc[1]>>8)&0xf)",
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"((pc[1]>>8)&0xf)",
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"((pc[1]>>4)&0xf)",
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"((pc[1]>>4)&0xf)",
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"((pc[1])&0xf)",
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"((pc[1])&0xf)",
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0, 0};
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0, 0};
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/* how to get at the 3 bit immediate in the instruction */
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/* how to get at the 3 bit immediate in the instruction */
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char *imm3[] =
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char *imm3[] =
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{"foo",
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{"foo",
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"foo",
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"foo",
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"((b1>>4)&0x7)",
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"((b1>>4)&0x7)",
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"foo",
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"foo",
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"foo",
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"foo",
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"foo",
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"foo",
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"(pc[1]>>4)&0x7"};
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"(pc[1]>>4)&0x7"};
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/* How to get at a byte register from an index in the instruction at
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/* How to get at a byte register from an index in the instruction at
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nibble n */
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nibble n */
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char *breg[] =
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char *breg[] =
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{"foo",
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{"foo",
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"*(blow[b0])",
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"*(blow[b0])",
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"*(bhigh[b1])",
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"*(bhigh[b1])",
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"*(blow[b1])",
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"*(blow[b1])",
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0, 0,
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0, 0,
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"*(bhigh[pc[1]>>8])"};
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"*(bhigh[pc[1]>>8])"};
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/* How to get at a word register from an index in the instruction at
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/* How to get at a word register from an index in the instruction at
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nibble n */
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nibble n */
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char *wreg[] =
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char *wreg[] =
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{"foo",
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{"foo",
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"*(wlow[b0])",
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"*(wlow[b0])",
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"*(whigh[b1])",
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"*(whigh[b1])",
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"*(wlow[b1])"};
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"*(wlow[b1])"};
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#define sorted_key noperands
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#define sorted_key noperands
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/* sort the opcode table into h8_opcodes_sorted[0..255] */
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/* sort the opcode table into h8_opcodes_sorted[0..255] */
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static void
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static void
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init ()
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init ()
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{
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{
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unsigned int i;
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unsigned int i;
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struct h8_opcode *p;
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struct h8_opcode *p;
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for (p = h8_opcodes; p->name; p++)
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for (p = h8_opcodes; p->name; p++)
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{
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{
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int n1 = 0;
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int n1 = 0;
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int n2 = 0;
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int n2 = 0;
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int j;
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int j;
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#if 0
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#if 0
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for (j = 0; p->data.nib[j] != E; j++)
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for (j = 0; p->data.nib[j] != E; j++)
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{
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{
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if ((int) p->data.nib[j] == ABS16ORREL8SRC)
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if ((int) p->data.nib[j] == ABS16ORREL8SRC)
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p->data.nib[j] = ABS16SRC;
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p->data.nib[j] = ABS16SRC;
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if ((int) p->data.nib[j] == ABS16OR8SRC)
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if ((int) p->data.nib[j] == ABS16OR8SRC)
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p->data.nib[j] = ABS16SRC;
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p->data.nib[j] = ABS16SRC;
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if ((int) p->data.nib[j] == ABS16OR8DST)
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if ((int) p->data.nib[j] == ABS16OR8DST)
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p->data.nib[j] = ABS16DST;
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p->data.nib[j] = ABS16DST;
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}
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}
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#endif
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#endif
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if ((int) p->data.nib[0] < 16)
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if ((int) p->data.nib[0] < 16)
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{
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{
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n1 = (int) p->data.nib[0];
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n1 = (int) p->data.nib[0];
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}
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}
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else
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else
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n1 = 0;
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n1 = 0;
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if ((int) p->data.nib[1] < 16)
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if ((int) p->data.nib[1] < 16)
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{
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{
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n2 = (int) p->data.nib[1];
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n2 = (int) p->data.nib[1];
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}
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}
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else
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else
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n2 = 0;
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n2 = 0;
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for (i = 0; i < MAXSAME; i++)
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for (i = 0; i < MAXSAME; i++)
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{
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{
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int j = /* ((n3 >> 3) * 512) + ((n4 >> 3) * 256) + */ n1 * 16 + n2;
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int j = /* ((n3 >> 3) * 512) + ((n4 >> 3) * 256) + */ n1 * 16 + n2;
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if (h8_opcodes_sorted[j][i] == (struct h8_opcode *) NULL)
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if (h8_opcodes_sorted[j][i] == (struct h8_opcode *) NULL)
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{
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{
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h8_opcodes_sorted[j][i] = p;
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h8_opcodes_sorted[j][i] = p;
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p->sorted_key = j;
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p->sorted_key = j;
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break;
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break;
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}
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}
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}
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}
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if (i == MAXSAME)
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if (i == MAXSAME)
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abort ();
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abort ();
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/* Just make sure there are an even number of nibbles in it, and
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/* Just make sure there are an even number of nibbles in it, and
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that the count is the same s the length */
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that the count is the same s the length */
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for (i = 0; p->data.nib[i] != E; i++)
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for (i = 0; p->data.nib[i] != E; i++)
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/*EMPTY*/ ;
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/*EMPTY*/ ;
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if (i & 1)
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if (i & 1)
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abort ();
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abort ();
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p->length = i / 2;
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p->length = i / 2;
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}
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}
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for (i = 0; i < PTWO; i++)
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for (i = 0; i < PTWO; i++)
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{
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{
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if (h8_opcodes_sorted[i][0])
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if (h8_opcodes_sorted[i][0])
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p = h8_opcodes_sorted[i][0];
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p = h8_opcodes_sorted[i][0];
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else
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else
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h8_opcodes_sorted[i][0] = p;
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h8_opcodes_sorted[i][0] = p;
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}
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}
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}
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}
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/* decode the lvalues, creating a pointer in real space to object -
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/* decode the lvalues, creating a pointer in real space to object -
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remember if the thing has to be swapped out of where it is */
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remember if the thing has to be swapped out of where it is */
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int swap[2];
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int swap[2];
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lval (p)
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lval (p)
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struct h8_opcode *p;
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struct h8_opcode *p;
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{
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{
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int i;
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int i;
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for (i = 0; p->data.nib[i] != E; i++)
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for (i = 0; p->data.nib[i] != E; i++)
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{
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{
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int x = p->data.nib[i];
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int x = p->data.nib[i];
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int size;
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int size;
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int op;
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int op;
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op = (x & DST) ? 1 : 0;
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op = (x & DST) ? 1 : 0;
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switch (x & SIZE)
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switch (x & SIZE)
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{
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{
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case L_32:
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case L_32:
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size = 32;
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size = 32;
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break;
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break;
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case L_16:
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case L_16:
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size = 16;
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size = 16;
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break;
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break;
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case L_8:
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case L_8:
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size = 8;
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size = 8;
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break;
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break;
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default:
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default:
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size = 1234;
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size = 1234;
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}
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}
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if (x & REG)
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if (x & REG)
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{
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{
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printf ("ir%d = GET_LVAL_%d_REG(%d);\n", op, size, i);
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printf ("ir%d = GET_LVAL_%d_REG(%d);\n", op, size, i);
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}
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}
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else if (x & IMM)
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else if (x & IMM)
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{
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{
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printf ("/* Imm has no lvalue */\n");
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printf ("/* Imm has no lvalue */\n");
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}
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}
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}
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}
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}
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}
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void
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void
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decode (p, fetch, size)
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decode (p, fetch, size)
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struct h8_opcode *p;
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struct h8_opcode *p;
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int fetch;
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int fetch;
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int size;
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int size;
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{
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{
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if (fetch)
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if (fetch)
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{
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{
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lval (p);
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lval (p);
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}
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}
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}
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}
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static void
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static void
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esleep ()
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esleep ()
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{
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{
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printf ("saved_state.exception = SIGSTOP;\n");
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printf ("saved_state.exception = SIGSTOP;\n");
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}
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}
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static void
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static void
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mov (p, s, sz)
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mov (p, s, sz)
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struct h8_opcode *p;
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struct h8_opcode *p;
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char *s;
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char *s;
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int sz;
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int sz;
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{
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{
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printf ("dst = srca;\n");
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printf ("dst = srca;\n");
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}
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}
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static void
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static void
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andc (p)
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andc (p)
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struct h8_opcode *p;
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struct h8_opcode *p;
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{
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{
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printf ("SET_CCR(GET_CCR() & srca);\n");
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printf ("SET_CCR(GET_CCR() & srca);\n");
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}
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}
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static void
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static void
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addx (p)
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addx (p)
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struct h8_opcode *p;
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struct h8_opcode *p;
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{
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{
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printf ("dst = srca + srcb+ (c != 0);\n");
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printf ("dst = srca + srcb+ (c != 0);\n");
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}
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}
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static void
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static void
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subx (p)
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subx (p)
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struct h8_opcode *p;
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struct h8_opcode *p;
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{
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{
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printf ("dst = srcb - srca - (c != 0);\n");
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printf ("dst = srcb - srca - (c != 0);\n");
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}
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}
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static void
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static void
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add (p, s, sz)
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add (p, s, sz)
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struct h8_opcode *p;
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struct h8_opcode *p;
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char *s;
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char *s;
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int sz;
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int sz;
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{
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{
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printf ("%s;\n", s);
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printf ("%s;\n", s);
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}
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}
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static void
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static void
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adds (p, s)
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adds (p, s)
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struct h8_opcode *p;
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struct h8_opcode *p;
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char *s;
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char *s;
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{
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{
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printf ("%s;\n", s);
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printf ("%s;\n", s);
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}
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}
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static void
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static void
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bra (p, a)
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bra (p, a)
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struct h8_opcode *p;
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struct h8_opcode *p;
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char *a;
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char *a;
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{
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{
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printf ("if (%s) npc += ((char )b1)>>1;\n", a);
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printf ("if (%s) npc += ((char )b1)>>1;\n", a);
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}
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}
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static void
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static void
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bsr (p, a)
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bsr (p, a)
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struct h8_opcode *p;
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struct h8_opcode *p;
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char *a;
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char *a;
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{
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{
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printf ("reg[7]-=2;\n");
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printf ("reg[7]-=2;\n");
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printf ("tmp = reg[7];\n");
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printf ("tmp = reg[7];\n");
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printf ("SET_WORD_MEM(tmp, (npc-saved_state.mem)*2);\n");
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printf ("SET_WORD_MEM(tmp, (npc-saved_state.mem)*2);\n");
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printf ("npc += ((char)b1)>>1;\n");
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printf ("npc += ((char)b1)>>1;\n");
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}
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}
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static void
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static void
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cmp (p, a, s)
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cmp (p, a, s)
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struct h8_opcode *p;
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struct h8_opcode *p;
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char *a;
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char *a;
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int s;
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int s;
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{
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{
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decode (p, 1, s);
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decode (p, 1, s);
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printf ("srca = -srca;\n");
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printf ("srca = -srca;\n");
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printf ("dst = srca + srcb;\n");
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printf ("dst = srca + srcb;\n");
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}
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}
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|
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static
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static
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void
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void
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jsr (p, a, s)
|
jsr (p, a, s)
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struct h8_opcode *p;
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struct h8_opcode *p;
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char *a;
|
char *a;
|
int s;
|
int s;
|
{
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{
|
printf ("if (b1 == 0xc4) {\n");
|
printf ("if (b1 == 0xc4) {\n");
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printf ("printf(\"%%c\", reg[2]);\n");
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printf ("printf(\"%%c\", reg[2]);\n");
|
printf ("}\n");
|
printf ("}\n");
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printf ("else {\n");
|
printf ("else {\n");
|
printf ("reg[7]-=2;\n");
|
printf ("reg[7]-=2;\n");
|
printf ("tmp = reg[7];\n");
|
printf ("tmp = reg[7];\n");
|
printf ("SET_WORD_MEM(tmp, (npc-saved_state.mem)*2);\n");
|
printf ("SET_WORD_MEM(tmp, (npc-saved_state.mem)*2);\n");
|
printf ("npc = (lval>>1) + saved_state.mem;\n");
|
printf ("npc = (lval>>1) + saved_state.mem;\n");
|
printf ("}");
|
printf ("}");
|
}
|
}
|
|
|
static void
|
static void
|
jmp (p, a, s)
|
jmp (p, a, s)
|
struct h8_opcode *p;
|
struct h8_opcode *p;
|
char *a;
|
char *a;
|
int s;
|
int s;
|
{
|
{
|
printf ("npc = (lval>>1) + saved_state.mem;\n");
|
printf ("npc = (lval>>1) + saved_state.mem;\n");
|
}
|
}
|
|
|
static void
|
static void
|
rts (p, a, s)
|
rts (p, a, s)
|
struct h8_opcode *p;
|
struct h8_opcode *p;
|
char *a;
|
char *a;
|
int s;
|
int s;
|
{
|
{
|
printf ("tmp = reg[7];\n");
|
printf ("tmp = reg[7];\n");
|
printf ("reg[7]+=2;\n");
|
printf ("reg[7]+=2;\n");
|
printf ("npc = saved_state.mem + (WORD_MEM(tmp)>>1);\n");
|
printf ("npc = saved_state.mem + (WORD_MEM(tmp)>>1);\n");
|
}
|
}
|
|
|
static void
|
static void
|
rte (p, a, s)
|
rte (p, a, s)
|
struct h8_opcode *p;
|
struct h8_opcode *p;
|
char *a;
|
char *a;
|
int s;
|
int s;
|
{
|
{
|
printf ("reg[7]+=2;\n");
|
printf ("reg[7]+=2;\n");
|
printf ("tmp = reg[7];\n");
|
printf ("tmp = reg[7];\n");
|
printf ("reg[7]+=2;\n");
|
printf ("reg[7]+=2;\n");
|
printf ("SET_CCR(tmp);\n");
|
printf ("SET_CCR(tmp);\n");
|
printf ("npc = saved_state.mem + (WORD_MEM(tmp)>>1);\n");
|
printf ("npc = saved_state.mem + (WORD_MEM(tmp)>>1);\n");
|
}
|
}
|
|
|
static void
|
static void
|
setf (p, a, s)
|
setf (p, a, s)
|
struct h8_opcode *p;
|
struct h8_opcode *p;
|
char *a;
|
char *a;
|
int s;
|
int s;
|
{
|
{
|
printf ("tmp = GET_CCR();\n");
|
printf ("tmp = GET_CCR();\n");
|
printf ("tmp %s= srca;\n", a);
|
printf ("tmp %s= srca;\n", a);
|
}
|
}
|
|
|
static void
|
static void
|
bpt (p, a, s)
|
bpt (p, a, s)
|
struct h8_opcode *p;
|
struct h8_opcode *p;
|
char *a;
|
char *a;
|
int s;
|
int s;
|
{
|
{
|
printf ("saved_state.exception = SIGTRAP;\n");
|
printf ("saved_state.exception = SIGTRAP;\n");
|
printf ("npc = pc;\n");
|
printf ("npc = pc;\n");
|
}
|
}
|
|
|
static void
|
static void
|
log (p, a, s)
|
log (p, a, s)
|
struct h8_opcode *p;
|
struct h8_opcode *p;
|
char *a;
|
char *a;
|
int s;
|
int s;
|
{
|
{
|
printf ("dst = srcb %s srca;\n", a);
|
printf ("dst = srcb %s srca;\n", a);
|
}
|
}
|
|
|
static void
|
static void
|
ulog (p, a, s)
|
ulog (p, a, s)
|
struct h8_opcode *p;
|
struct h8_opcode *p;
|
char *a;
|
char *a;
|
int s;
|
int s;
|
{
|
{
|
printf ("dst = %s srcb ;\n", a);
|
printf ("dst = %s srcb ;\n", a);
|
}
|
}
|
|
|
static void
|
static void
|
nop ()
|
nop ()
|
{
|
{
|
}
|
}
|
|
|
static void
|
static void
|
rotl ()
|
rotl ()
|
{
|
{
|
printf ("c = srcb & 0x80;\n");
|
printf ("c = srcb & 0x80;\n");
|
printf ("dst = srcb << 1;\n");
|
printf ("dst = srcb << 1;\n");
|
printf ("if (c) dst|=1;\n");
|
printf ("if (c) dst|=1;\n");
|
}
|
}
|
|
|
static void
|
static void
|
rotr ()
|
rotr ()
|
{
|
{
|
printf ("c = srcb & 1;\n");
|
printf ("c = srcb & 1;\n");
|
printf ("dst = srcb >> 1;\n");
|
printf ("dst = srcb >> 1;\n");
|
printf ("if (c) dst|=0x80;\n");
|
printf ("if (c) dst|=0x80;\n");
|
}
|
}
|
|
|
static void
|
static void
|
rotxl ()
|
rotxl ()
|
{
|
{
|
printf ("tmp = srcb & 0x80;\n");
|
printf ("tmp = srcb & 0x80;\n");
|
printf ("dst = srcb << 1;\n");
|
printf ("dst = srcb << 1;\n");
|
printf ("if (c) dst|=1;\n");
|
printf ("if (c) dst|=1;\n");
|
printf ("c = tmp;\n");
|
printf ("c = tmp;\n");
|
}
|
}
|
|
|
static void
|
static void
|
rotxr ()
|
rotxr ()
|
{
|
{
|
printf ("tmp = srcb & 1;\n");
|
printf ("tmp = srcb & 1;\n");
|
printf ("dst = srcb >> 1;\n");
|
printf ("dst = srcb >> 1;\n");
|
printf ("if (c) dst|=0x80;\n");
|
printf ("if (c) dst|=0x80;\n");
|
printf ("c = tmp;\n");
|
printf ("c = tmp;\n");
|
}
|
}
|
|
|
static void
|
static void
|
shal ()
|
shal ()
|
{
|
{
|
printf ("c = srcb&0x80;\n");
|
printf ("c = srcb&0x80;\n");
|
printf ("dst = srcb << 1;\n");
|
printf ("dst = srcb << 1;\n");
|
}
|
}
|
|
|
static
|
static
|
void
|
void
|
shar ()
|
shar ()
|
{
|
{
|
printf ("c = srcb&0x1;\n");
|
printf ("c = srcb&0x1;\n");
|
printf ("if (srcb&0x80) dst = (srcb>>1) | 0x80;\n");
|
printf ("if (srcb&0x80) dst = (srcb>>1) | 0x80;\n");
|
printf ("else dst = (srcb>>1) &~ 0x80;\n");
|
printf ("else dst = (srcb>>1) &~ 0x80;\n");
|
}
|
}
|
|
|
static
|
static
|
void
|
void
|
shll ()
|
shll ()
|
{
|
{
|
printf ("c = srcb&0x80;\n");
|
printf ("c = srcb&0x80;\n");
|
printf ("dst = srcb << 1;\n");
|
printf ("dst = srcb << 1;\n");
|
}
|
}
|
|
|
static
|
static
|
void
|
void
|
shlr ()
|
shlr ()
|
{
|
{
|
printf ("c = srcb&0x1;\n");
|
printf ("c = srcb&0x1;\n");
|
printf ("dst = (srcb>>1) &~ 0x80;\n");
|
printf ("dst = (srcb>>1) &~ 0x80;\n");
|
}
|
}
|
|
|
static
|
static
|
void
|
void
|
divxu ()
|
divxu ()
|
{
|
{
|
printf ("srca = %s;\n", breg[2]);
|
printf ("srca = %s;\n", breg[2]);
|
printf ("srcb = %s;\n", wreg[3]);
|
printf ("srcb = %s;\n", wreg[3]);
|
printf ("n = srca & 0x80;\n");
|
printf ("n = srca & 0x80;\n");
|
printf ("z = !srca;\n");
|
printf ("z = !srca;\n");
|
printf ("if (srca) dst = srcb / srca;tmp = srcb %% srca;\n");
|
printf ("if (srca) dst = srcb / srca;tmp = srcb %% srca;\n");
|
printf ("%s = (dst & 0xff) | (tmp << 8);\n", wreg[3]);
|
printf ("%s = (dst & 0xff) | (tmp << 8);\n", wreg[3]);
|
}
|
}
|
|
|
static
|
static
|
void
|
void
|
mulxu ()
|
mulxu ()
|
{
|
{
|
printf ("srca = %s;\n", breg[2]);
|
printf ("srca = %s;\n", breg[2]);
|
printf ("srcb = %s;\n", wreg[3]);
|
printf ("srcb = %s;\n", wreg[3]);
|
|
|
printf ("dst = (srcb&0xff) * srca;\n");
|
printf ("dst = (srcb&0xff) * srca;\n");
|
printf ("%s = dst;\n", wreg[3]);
|
printf ("%s = dst;\n", wreg[3]);
|
}
|
}
|
|
|
static
|
static
|
void
|
void
|
inc ()
|
inc ()
|
{
|
{
|
printf ("dst = %s;\n", breg[3]);
|
printf ("dst = %s;\n", breg[3]);
|
printf ("v = (dst==0x7f);\n");
|
printf ("v = (dst==0x7f);\n");
|
printf ("dst++;\n");
|
printf ("dst++;\n");
|
printf ("%s= dst;\n", breg[3]);
|
printf ("%s= dst;\n", breg[3]);
|
}
|
}
|
|
|
static
|
static
|
void
|
void
|
bit (p, a, s)
|
bit (p, a, s)
|
struct h8_opcode *p;
|
struct h8_opcode *p;
|
char *a;
|
char *a;
|
int s;
|
int s;
|
{
|
{
|
printf ("%s\n", a);
|
printf ("%s\n", a);
|
}
|
}
|
|
|
static
|
static
|
void
|
void
|
dec ()
|
dec ()
|
{
|
{
|
printf ("dst = %s;\n", breg[3]);
|
printf ("dst = %s;\n", breg[3]);
|
printf ("v = (dst==0x80);\n");
|
printf ("v = (dst==0x80);\n");
|
printf ("dst--;\n");
|
printf ("dst--;\n");
|
printf ("%s = dst;\n", breg[3]);
|
printf ("%s = dst;\n", breg[3]);
|
}
|
}
|
|
|
char saf[] = "goto setflags;";
|
char saf[] = "goto setflags;";
|
char sf[] = "goto shiftflags;";
|
char sf[] = "goto shiftflags;";
|
char af8[] = "goto aluflags8;";
|
char af8[] = "goto aluflags8;";
|
char af16[] = "goto aluflags16;";
|
char af16[] = "goto aluflags16;";
|
char lf[] = "goto logflags;";
|
char lf[] = "goto logflags;";
|
char icf[] = "goto incflags;";
|
char icf[] = "goto incflags;";
|
char mf8[] = "goto movflags8;";
|
char mf8[] = "goto movflags8;";
|
char mf16[] = "goto movflags16;";
|
char mf16[] = "goto movflags16;";
|
char nx[] = "goto next;";
|
char nx[] = "goto next;";
|
|
|
struct
|
struct
|
{
|
{
|
char *ftype;
|
char *ftype;
|
int decode;
|
int decode;
|
char *name;
|
char *name;
|
void (*func) ();
|
void (*func) ();
|
char *arg;
|
char *arg;
|
int size;
|
int size;
|
|
|
}
|
}
|
|
|
table[] =
|
table[] =
|
{
|
{
|
{
|
{
|
nx, 1, "bld", bit, "dst = srcb; c = (srcb>>srca)&1;", 8
|
nx, 1, "bld", bit, "dst = srcb; c = (srcb>>srca)&1;", 8
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "bild", bit, "dst = srcb; c = !((srcb>>srca)&1);", 8
|
nx, 1, "bild", bit, "dst = srcb; c = !((srcb>>srca)&1);", 8
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "band", bit, "dst = srcb; c = C &&((srcb>>srca)&1);", 8
|
nx, 1, "band", bit, "dst = srcb; c = C &&((srcb>>srca)&1);", 8
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "biand", bit, "dst = srcb; c = C &&(!((srcb>>srca)&1));", 8
|
nx, 1, "biand", bit, "dst = srcb; c = C &&(!((srcb>>srca)&1));", 8
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "bior", bit, "dst = srcb; c = C ||(!((srcb>>srca)&1));", 8
|
nx, 1, "bior", bit, "dst = srcb; c = C ||(!((srcb>>srca)&1));", 8
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "bor", bit, "dst = srcb; c = C ||(((srcb>>srca)&1));", 8
|
nx, 1, "bor", bit, "dst = srcb; c = C ||(((srcb>>srca)&1));", 8
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "bixor", bit, "dst = srcb; c = C ^(!((srcb>>srca)&1));", 8
|
nx, 1, "bixor", bit, "dst = srcb; c = C ^(!((srcb>>srca)&1));", 8
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "bxor", bit, "dst = srcb; c = C ^(((srcb>>srca)&1));", 8
|
nx, 1, "bxor", bit, "dst = srcb; c = C ^(((srcb>>srca)&1));", 8
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "bnot", bit, "dst = srcb ^ (1<<srca);", 8
|
nx, 1, "bnot", bit, "dst = srcb ^ (1<<srca);", 8
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "bclr", bit, "dst = srcb & ~(1<<srca);", 8
|
nx, 1, "bclr", bit, "dst = srcb & ~(1<<srca);", 8
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "bset", bit, "dst = srcb | (1<<srca);", 8
|
nx, 1, "bset", bit, "dst = srcb | (1<<srca);", 8
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "bst", bit, "dst = (srcb & ~(1<<srca))| ((C)<<srca);", 8
|
nx, 1, "bst", bit, "dst = (srcb & ~(1<<srca))| ((C)<<srca);", 8
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "bist", bit, "dst = (srcb & ~(1<<srca))| ((!C)<<srca);", 8
|
nx, 1, "bist", bit, "dst = (srcb & ~(1<<srca))| ((!C)<<srca);", 8
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "btst", bit, "dst = srcb; z = !((srcb>>srca)&1);", 8
|
nx, 1, "btst", bit, "dst = srcb; z = !((srcb>>srca)&1);", 8
|
}
|
}
|
,
|
,
|
{
|
{
|
icf, 0, "dec", dec, 0, 0
|
icf, 0, "dec", dec, 0, 0
|
}
|
}
|
,
|
,
|
{
|
{
|
icf, 0, "inc", inc, 0, 0
|
icf, 0, "inc", inc, 0, 0
|
}
|
}
|
,
|
,
|
{
|
{
|
saf, 1, "orc", setf, "|", 0
|
saf, 1, "orc", setf, "|", 0
|
}
|
}
|
,
|
,
|
{
|
{
|
saf, 1, "xorc", setf, "^", 0
|
saf, 1, "xorc", setf, "^", 0
|
}
|
}
|
,
|
,
|
{
|
{
|
saf, 1, "andc", setf, "&", 0
|
saf, 1, "andc", setf, "&", 0
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "nop", nop, 0, 0
|
nx, 1, "nop", nop, 0, 0
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "bra", bra, "1", 0
|
nx, 1, "bra", bra, "1", 0
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "brn", bra, "0", 0
|
nx, 1, "brn", bra, "0", 0
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "bhi", bra, "(C||Z)==0", 0
|
nx, 1, "bhi", bra, "(C||Z)==0", 0
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "bls", bra, "(C||Z)==1", 0
|
nx, 1, "bls", bra, "(C||Z)==1", 0
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "bcs", bra, "C==1", 0
|
nx, 1, "bcs", bra, "C==1", 0
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "bcc", bra, "C==0", 0
|
nx, 1, "bcc", bra, "C==0", 0
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "bpl", bra, "N==0", 0
|
nx, 1, "bpl", bra, "N==0", 0
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "bmi", bra, "N==1", 0
|
nx, 1, "bmi", bra, "N==1", 0
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "bvs", bra, "V==1", 0
|
nx, 1, "bvs", bra, "V==1", 0
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "bvc", bra, "V==0", 0
|
nx, 1, "bvc", bra, "V==0", 0
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "bge", bra, "(N^V)==0", 0
|
nx, 1, "bge", bra, "(N^V)==0", 0
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "bgt", bra, "(Z|(N^V))==0", 0
|
nx, 1, "bgt", bra, "(Z|(N^V))==0", 0
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "blt", bra, "(N^V)==1", 0
|
nx, 1, "blt", bra, "(N^V)==1", 0
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "ble", bra, "(Z|(N^V))==1", 0
|
nx, 1, "ble", bra, "(Z|(N^V))==1", 0
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "beq", bra, "Z==1", 0
|
nx, 1, "beq", bra, "Z==1", 0
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "bne", bra, "Z==0", 0
|
nx, 1, "bne", bra, "Z==0", 0
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "bsr", bsr, "", 0
|
nx, 1, "bsr", bsr, "", 0
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "jsr", jsr, 0, 0
|
nx, 1, "jsr", jsr, 0, 0
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "jmp", jmp, 0, 0
|
nx, 1, "jmp", jmp, 0, 0
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 0, "rts", rts, 0, 0
|
nx, 0, "rts", rts, 0, 0
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 0, "rte", rte, 0, 0
|
nx, 0, "rte", rte, 0, 0
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "andc", andc, 0, 0
|
nx, 1, "andc", andc, 0, 0
|
}
|
}
|
,
|
,
|
{
|
{
|
sf, 1, "shal", shal, 0, 0
|
sf, 1, "shal", shal, 0, 0
|
}
|
}
|
,
|
,
|
{
|
{
|
sf, 1, "shar", shar, 0, 0
|
sf, 1, "shar", shar, 0, 0
|
}
|
}
|
,
|
,
|
{
|
{
|
sf, 1, "shll", shll, 0, 0
|
sf, 1, "shll", shll, 0, 0
|
}
|
}
|
,
|
,
|
{
|
{
|
sf, 1, "shlr", shlr, 0, 0
|
sf, 1, "shlr", shlr, 0, 0
|
}
|
}
|
,
|
,
|
{
|
{
|
sf, 1, "rotxl", rotxl, 0, 0
|
sf, 1, "rotxl", rotxl, 0, 0
|
}
|
}
|
,
|
,
|
{
|
{
|
sf, 1, "rotxr", rotxr, 0, 0
|
sf, 1, "rotxr", rotxr, 0, 0
|
}
|
}
|
,
|
,
|
{
|
{
|
sf, 1, "rotl", rotl, 0, 0
|
sf, 1, "rotl", rotl, 0, 0
|
}
|
}
|
,
|
,
|
{
|
{
|
sf, 1, "rotr", rotr, 0, 0
|
sf, 1, "rotr", rotr, 0, 0
|
}
|
}
|
,
|
,
|
{
|
{
|
lf, 1, "xor", log, "^", 0
|
lf, 1, "xor", log, "^", 0
|
}
|
}
|
,
|
,
|
{
|
{
|
lf, 1, "and", log, "&", 0
|
lf, 1, "and", log, "&", 0
|
}
|
}
|
,
|
,
|
{
|
{
|
lf, 1, "or", log, "|", 0
|
lf, 1, "or", log, "|", 0
|
}
|
}
|
,
|
,
|
{
|
{
|
lf, 1, "not", ulog, " ~", 0
|
lf, 1, "not", ulog, " ~", 0
|
}
|
}
|
,
|
,
|
{
|
{
|
lf, 1, "neg", ulog, " - ", 0
|
lf, 1, "neg", ulog, " - ", 0
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "adds", adds, "dst = srca + srcb", 0
|
nx, 1, "adds", adds, "dst = srca + srcb", 0
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "subs", adds, "srca = -srca; dst = srcb + srca", 0
|
nx, 1, "subs", adds, "srca = -srca; dst = srcb + srca", 0
|
}
|
}
|
,
|
,
|
{
|
{
|
af8, 1, "add.b", add, "dst = srca + srcb", 8
|
af8, 1, "add.b", add, "dst = srca + srcb", 8
|
}
|
}
|
,
|
,
|
{
|
{
|
af16, 1, "add.w", add, "dst = srca + srcb", 16
|
af16, 1, "add.w", add, "dst = srca + srcb", 16
|
}
|
}
|
,
|
,
|
{
|
{
|
af16, 1, "sub.w", add, "srca = -srca; dst = srcb + srca", 16
|
af16, 1, "sub.w", add, "srca = -srca; dst = srcb + srca", 16
|
}
|
}
|
,
|
,
|
{
|
{
|
af8, 1, "sub.b", add, "srca = -srca; dst = srcb + srca", 8
|
af8, 1, "sub.b", add, "srca = -srca; dst = srcb + srca", 8
|
}
|
}
|
,
|
,
|
{
|
{
|
af8, 1, "addx", addx, 0, 8
|
af8, 1, "addx", addx, 0, 8
|
}
|
}
|
,
|
,
|
{
|
{
|
af8, 1, "subx", subx, 0, 8
|
af8, 1, "subx", subx, 0, 8
|
}
|
}
|
,
|
,
|
{
|
{
|
af8, 0, "cmp.b", cmp, 0, 8
|
af8, 0, "cmp.b", cmp, 0, 8
|
}
|
}
|
,
|
,
|
{
|
{
|
af16, 0, "cmp.w", cmp, 0, 16
|
af16, 0, "cmp.w", cmp, 0, 16
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 1, "sleep", esleep, 0, 0
|
nx, 1, "sleep", esleep, 0, 0
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 0, "bpt", bpt, 0, 8
|
nx, 0, "bpt", bpt, 0, 8
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 0, "divxu", divxu, 0, 0
|
nx, 0, "divxu", divxu, 0, 0
|
}
|
}
|
,
|
,
|
{
|
{
|
nx, 0, "mulxu", mulxu, 0, 0
|
nx, 0, "mulxu", mulxu, 0, 0
|
}
|
}
|
,
|
,
|
{
|
{
|
mf8, 1, "mov.b", mov, 0, 8
|
mf8, 1, "mov.b", mov, 0, 8
|
}
|
}
|
,
|
,
|
{
|
{
|
mf8, 1, "movtpe", mov, 0, 8
|
mf8, 1, "movtpe", mov, 0, 8
|
}
|
}
|
,
|
,
|
{
|
{
|
mf8, 1, "movfpe", mov, 0, 8
|
mf8, 1, "movfpe", mov, 0, 8
|
}
|
}
|
,
|
,
|
{
|
{
|
mf16, 1, "mov.w", mov, 0, 16
|
mf16, 1, "mov.w", mov, 0, 16
|
}
|
}
|
,
|
,
|
{
|
{
|
0
|
0
|
}
|
}
|
};
|
};
|
|
|
static
|
static
|
void
|
void
|
edo (p)
|
edo (p)
|
struct h8_opcode *p;
|
struct h8_opcode *p;
|
{
|
{
|
int i;
|
int i;
|
|
|
printf ("%s %s %s\n", cs, p->name, ce);
|
printf ("%s %s %s\n", cs, p->name, ce);
|
|
|
for (i = 0; table[i].name; i++)
|
for (i = 0; table[i].name; i++)
|
{
|
{
|
if (strcmp (table[i].name, p->name) == 0)
|
if (strcmp (table[i].name, p->name) == 0)
|
{
|
{
|
printf ("{\n");
|
printf ("{\n");
|
if (table[i].decode)
|
if (table[i].decode)
|
decode (p, 1, table[i].size);
|
decode (p, 1, table[i].size);
|
printf ("cycles += %d;\n", p->time);
|
printf ("cycles += %d;\n", p->time);
|
printf ("npc = pc + %d;\n", p->length / 2);
|
printf ("npc = pc + %d;\n", p->length / 2);
|
table[i].func (p, table[i].arg, table[i].size);
|
table[i].func (p, table[i].arg, table[i].size);
|
if (table[i].decode)
|
if (table[i].decode)
|
decode (p, 0, table[i].size);
|
decode (p, 0, table[i].size);
|
if (table[i].ftype)
|
if (table[i].ftype)
|
printf (table[i].ftype);
|
printf (table[i].ftype);
|
else
|
else
|
printf ("goto next;\n");
|
printf ("goto next;\n");
|
printf ("}\n");
|
printf ("}\n");
|
return;
|
return;
|
}
|
}
|
}
|
}
|
printf ("%s not found %s\n", cs, ce);
|
printf ("%s not found %s\n", cs, ce);
|
printf ("saved_state.exception = SIGILL;\n");
|
printf ("saved_state.exception = SIGILL;\n");
|
printf ("break;\n");
|
printf ("break;\n");
|
}
|
}
|
|
|
static
|
static
|
int
|
int
|
owrite (i)
|
owrite (i)
|
int i;
|
int i;
|
{
|
{
|
/* write if statements to select the right opcode */
|
/* write if statements to select the right opcode */
|
struct h8_opcode **p;
|
struct h8_opcode **p;
|
int needand = 1;
|
int needand = 1;
|
|
|
p = h8_opcodes_sorted[i];
|
p = h8_opcodes_sorted[i];
|
printf ("case 0x%03x:\n", i);
|
printf ("case 0x%03x:\n", i);
|
|
|
if (p[1] == 0)
|
if (p[1] == 0)
|
{
|
{
|
/* See if the next few also match */
|
/* See if the next few also match */
|
while (h8_opcodes_sorted[i + 1][0] == *p)
|
while (h8_opcodes_sorted[i + 1][0] == *p)
|
{
|
{
|
i++;
|
i++;
|
printf ("case 0x%03x:\n", i);
|
printf ("case 0x%03x:\n", i);
|
}
|
}
|
|
|
/* Don't need any if's this is the only one */
|
/* Don't need any if's this is the only one */
|
edo (*p);
|
edo (*p);
|
}
|
}
|
else
|
else
|
{
|
{
|
while (*p)
|
while (*p)
|
{
|
{
|
/* start two nibbles in since we know we match in the first byte */
|
/* start two nibbles in since we know we match in the first byte */
|
int c;
|
int c;
|
int nib = 2;
|
int nib = 2;
|
int byte = 1;
|
int byte = 1;
|
int mask1[5];
|
int mask1[5];
|
int mask0[5];
|
int mask0[5];
|
int nibshift = 4;
|
int nibshift = 4;
|
int any = 0;
|
int any = 0;
|
|
|
for (c = 0; c < 5; c++)
|
for (c = 0; c < 5; c++)
|
{
|
{
|
mask1[c] = 0;
|
mask1[c] = 0;
|
mask0[c] = 0;
|
mask0[c] = 0;
|
}
|
}
|
printf ("%s %x%x", cs, (*p)->data.nib[0], (*p)->data.nib[1]);
|
printf ("%s %x%x", cs, (*p)->data.nib[0], (*p)->data.nib[1]);
|
while ((c = (*p)->data.nib[nib]) != E)
|
while ((c = (*p)->data.nib[nib]) != E)
|
{
|
{
|
if (c & B30)
|
if (c & B30)
|
{
|
{
|
/* bit 3 must be zero */
|
/* bit 3 must be zero */
|
mask0[byte] |= 0x8 << nibshift;
|
mask0[byte] |= 0x8 << nibshift;
|
printf ("0");
|
printf ("0");
|
any = 1;
|
any = 1;
|
}
|
}
|
else if (c & B31)
|
else if (c & B31)
|
{
|
{
|
/* bit 3 must be one */
|
/* bit 3 must be one */
|
mask1[byte] |= 0x8 << nibshift;
|
mask1[byte] |= 0x8 << nibshift;
|
printf ("8");
|
printf ("8");
|
any = 1;
|
any = 1;
|
}
|
}
|
else if (c <= HexF)
|
else if (c <= HexF)
|
{
|
{
|
mask0[byte] |= ((~c) & 0xf) << nibshift;
|
mask0[byte] |= ((~c) & 0xf) << nibshift;
|
mask1[byte] |= (c & 0xf) << nibshift;
|
mask1[byte] |= (c & 0xf) << nibshift;
|
printf ("%x", c);
|
printf ("%x", c);
|
any = 1;
|
any = 1;
|
}
|
}
|
else
|
else
|
{
|
{
|
printf ("x");
|
printf ("x");
|
}
|
}
|
nib++;
|
nib++;
|
if (nibshift == 4)
|
if (nibshift == 4)
|
{
|
{
|
nibshift = 0;
|
nibshift = 0;
|
}
|
}
|
else
|
else
|
{
|
{
|
byte++;
|
byte++;
|
nibshift = 4;
|
nibshift = 4;
|
}
|
}
|
}
|
}
|
printf ("*/\n");
|
printf ("*/\n");
|
if (any)
|
if (any)
|
{
|
{
|
printf ("if (");
|
printf ("if (");
|
needand = 0;
|
needand = 0;
|
for (c = 1; c < byte; c++)
|
for (c = 1; c < byte; c++)
|
{
|
{
|
if (mask0[c] | mask1[c])
|
if (mask0[c] | mask1[c])
|
{
|
{
|
int sh;
|
int sh;
|
|
|
if (needand)
|
if (needand)
|
printf ("\n&&");
|
printf ("\n&&");
|
if (c & 1)
|
if (c & 1)
|
sh = 0;
|
sh = 0;
|
else
|
else
|
sh = 8;
|
sh = 8;
|
if (c / 2 == 0 && sh == 0)
|
if (c / 2 == 0 && sh == 0)
|
printf ("((b1&0x%x)==0x%x)", mask0[c] | mask1[c],
|
printf ("((b1&0x%x)==0x%x)", mask0[c] | mask1[c],
|
mask1[c]);
|
mask1[c]);
|
else
|
else
|
{
|
{
|
printf ("((pc[%d]&(0x%02x<<%d))==(0x%x<<%d))",
|
printf ("((pc[%d]&(0x%02x<<%d))==(0x%x<<%d))",
|
c / 2, mask0[c] | mask1[c], sh,
|
c / 2, mask0[c] | mask1[c], sh,
|
mask1[c], sh);
|
mask1[c], sh);
|
}
|
}
|
|
|
needand = 1;
|
needand = 1;
|
}
|
}
|
}
|
}
|
printf (")\n");
|
printf (")\n");
|
}
|
}
|
edo (*p);
|
edo (*p);
|
p++;
|
p++;
|
|
|
}
|
}
|
}
|
}
|
return i;
|
return i;
|
}
|
}
|
|
|
static
|
static
|
void
|
void
|
remove_dups ()
|
remove_dups ()
|
{
|
{
|
struct h8_opcode *s;
|
struct h8_opcode *s;
|
struct h8_opcode *d;
|
struct h8_opcode *d;
|
|
|
for (d = s = h8_opcodes; s->name; s++)
|
for (d = s = h8_opcodes; s->name; s++)
|
{
|
{
|
int doit = 1;
|
int doit = 1;
|
|
|
if (strcmp (s->name, "push") == 0)
|
if (strcmp (s->name, "push") == 0)
|
doit = 0;
|
doit = 0;
|
if (strcmp (s->name, "bhs") == 0)
|
if (strcmp (s->name, "bhs") == 0)
|
doit = 0;
|
doit = 0;
|
if (strcmp (s->name, "blo") == 0)
|
if (strcmp (s->name, "blo") == 0)
|
doit = 0;
|
doit = 0;
|
if (strcmp (s->name, "bt") == 0)
|
if (strcmp (s->name, "bt") == 0)
|
doit = 0;
|
doit = 0;
|
if (strcmp (s->name, "bf") == 0)
|
if (strcmp (s->name, "bf") == 0)
|
doit = 0;
|
doit = 0;
|
if (strcmp (s->name, "pop") == 0)
|
if (strcmp (s->name, "pop") == 0)
|
doit = 0;
|
doit = 0;
|
if (doit)
|
if (doit)
|
{
|
{
|
*d++ = *s;
|
*d++ = *s;
|
}
|
}
|
}
|
}
|
*d++ = *s++;
|
*d++ = *s++;
|
}
|
}
|
|
|
int
|
int
|
main ()
|
main ()
|
{
|
{
|
int i;
|
int i;
|
|
|
remove_dups ();
|
remove_dups ();
|
init ();
|
init ();
|
|
|
printf ("%s do the operation %s\n", cs, ce);
|
printf ("%s do the operation %s\n", cs, ce);
|
printf ("switch (b0) \n{\n");
|
printf ("switch (b0) \n{\n");
|
for (i = 0; i < PTWO; i++)
|
for (i = 0; i < PTWO; i++)
|
{
|
{
|
i = owrite (i);
|
i = owrite (i);
|
}
|
}
|
printf ("}\n");
|
printf ("}\n");
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
