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/* Print Z80 and R800 instructions
   Copyright 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
   Contributed by Arnold Metselaar <arnold_m@operamail.com>
 
   This file is part of the GNU opcodes library.
 
   This library is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3, or (at your option)
   any later version.
 
   It is distributed in the hope that it will be useful, but WITHOUT
   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
   License for more details.
 
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
   MA 02110-1301, USA.  */
 
#include "sysdep.h"
#include "dis-asm.h"
#include <stdio.h>
 
struct buffer
{
  bfd_vma base;
  int n_fetch;
  int n_used;
  signed char data[4];
} ;
 
typedef int (*func)(struct buffer *, disassemble_info *, char *);
 
struct tab_elt
{
  unsigned char val;
  unsigned char mask;
  func          fp;
  char *        text;
} ;
 
#define TXTSIZ 24
/* Names of 16-bit registers.  */
static char * rr_str[] = { "bc", "de", "hl", "sp" };
/* Names of 8-bit registers.  */
static char * r_str[]  = { "b", "c", "d", "e", "h", "l", "(hl)", "a" };
/* Texts for condition codes.  */
static char * cc_str[] = { "nz", "z", "nc", "c", "po", "pe", "p", "m" };
/* Instruction names for 8-bit arithmetic, operand "a" is often implicit */
static char * arit_str[] =
{
  "add a,", "adc a,", "sub ", "sbc a,", "and ", "xor ", "or ", "cp "
} ;
 
static int
fetch_data (struct buffer *buf, disassemble_info * info, int n)
{
  int r;
 
  if (buf->n_fetch + n > 4)
    abort ();
 
  r = info->read_memory_func (buf->base + buf->n_fetch,
                              (unsigned char*) buf->data + buf->n_fetch,
                              n, info);
  if (r == 0)
    buf->n_fetch += n;
  return !r;
}
 
static int
prt (struct buffer *buf, disassemble_info * info, char *txt)
{
  info->fprintf_func (info->stream, "%s", txt);
  buf->n_used = buf->n_fetch;
  return 1;
}
 
static int
prt_e (struct buffer *buf, disassemble_info * info, char *txt)
{
  char e;
  int target_addr;
 
  if (fetch_data (buf, info, 1))
    {
      e = buf->data[1];
      target_addr = (buf->base + 2 + e) & 0xffff;
      buf->n_used = buf->n_fetch;
      info->fprintf_func (info->stream, "%s0x%04x", txt, target_addr);
    }
  else
    buf->n_used = -1;
 
  return buf->n_used;
}
 
static int
jr_cc (struct buffer *buf, disassemble_info * info, char *txt)
{
  char mytxt[TXTSIZ];
 
  snprintf (mytxt, TXTSIZ, txt, cc_str[(buf->data[0] >> 3) & 3]);
  return prt_e (buf, info, mytxt);
}
 
static int
prt_nn (struct buffer *buf, disassemble_info * info, char *txt)
{
  int nn;
  unsigned char *p;
 
  p = (unsigned char*) buf->data + buf->n_fetch;
  if (fetch_data (buf, info, 2))
    {
      nn = p[0] + (p[1] << 8);
      info->fprintf_func (info->stream, txt, nn);
      buf->n_used = buf->n_fetch;
    }
  else
    buf->n_used = -1;
  return buf->n_used;
}
 
static int
prt_rr_nn (struct buffer *buf, disassemble_info * info, char *txt)
{
  char mytxt[TXTSIZ];
  int rr;
 
  rr = (buf->data[buf->n_fetch - 1] >> 4) & 3;
  snprintf (mytxt, TXTSIZ, txt, rr_str[rr]);
  return prt_nn (buf, info, mytxt);
}
 
static int
prt_rr (struct buffer *buf, disassemble_info * info, char *txt)
{
  info->fprintf_func (info->stream, "%s%s", txt,
                      rr_str[(buf->data[buf->n_fetch - 1] >> 4) & 3]);
  buf->n_used = buf->n_fetch;
  return buf->n_used;
}
 
static int
prt_n (struct buffer *buf, disassemble_info * info, char *txt)
{
  int n;
  unsigned char *p;
 
  p = (unsigned char*) buf->data + buf->n_fetch;
 
  if (fetch_data (buf, info, 1))
    {
      n = p[0];
      info->fprintf_func (info->stream, txt, n);
      buf->n_used = buf->n_fetch;
    }
  else
    buf->n_used = -1;
 
  return buf->n_used;
}
 
static int
ld_r_n (struct buffer *buf, disassemble_info * info, char *txt)
{
  char mytxt[TXTSIZ];
 
  snprintf (mytxt, TXTSIZ, txt, r_str[(buf->data[0] >> 3) & 7]);
  return prt_n (buf, info, mytxt);
}
 
static int
prt_r (struct buffer *buf, disassemble_info * info, char *txt)
{
  info->fprintf_func (info->stream, txt,
                      r_str[(buf->data[buf->n_fetch - 1] >> 3) & 7]);
  buf->n_used = buf->n_fetch;
  return buf->n_used;
}
 
static int
ld_r_r (struct buffer *buf, disassemble_info * info, char *txt)
{
  info->fprintf_func (info->stream, txt,
                      r_str[(buf->data[buf->n_fetch - 1] >> 3) & 7],
                      r_str[buf->data[buf->n_fetch - 1] & 7]);
  buf->n_used = buf->n_fetch;
  return buf->n_used;
}
 
static int
arit_r (struct buffer *buf, disassemble_info * info, char *txt)
{
  info->fprintf_func (info->stream, txt,
                      arit_str[(buf->data[buf->n_fetch - 1] >> 3) & 7],
                      r_str[buf->data[buf->n_fetch - 1] & 7]);
  buf->n_used = buf->n_fetch;
  return buf->n_used;
}
 
static int
prt_cc (struct buffer *buf, disassemble_info * info, char *txt)
{
  info->fprintf_func (info->stream, "%s%s", txt,
                      cc_str[(buf->data[0] >> 3) & 7]);
  buf->n_used = buf->n_fetch;
  return buf->n_used;
}
 
static int
pop_rr (struct buffer *buf, disassemble_info * info, char *txt)
{
  static char *rr_stack[] = { "bc","de","hl","af"};
 
  info->fprintf_func (info->stream, "%s %s", txt,
                      rr_stack[(buf->data[0] >> 4) & 3]);
  buf->n_used = buf->n_fetch;
  return buf->n_used;
}
 
 
static int
jp_cc_nn (struct buffer *buf, disassemble_info * info, char *txt)
{
  char mytxt[TXTSIZ];
 
  snprintf (mytxt,TXTSIZ,
            "%s%s,0x%%04x", txt, cc_str[(buf->data[0] >> 3) & 7]);
  return prt_nn (buf, info, mytxt);
}
 
static int
arit_n (struct buffer *buf, disassemble_info * info, char *txt)
{
  char mytxt[TXTSIZ];
 
  snprintf (mytxt,TXTSIZ, txt, arit_str[(buf->data[0] >> 3) & 7]);
  return prt_n (buf, info, mytxt);
}
 
static int
rst (struct buffer *buf, disassemble_info * info, char *txt)
{
  info->fprintf_func (info->stream, txt, buf->data[0] & 0x38);
  buf->n_used = buf->n_fetch;
  return buf->n_used;
}
 
 
static int
cis (struct buffer *buf, disassemble_info * info, char *txt ATTRIBUTE_UNUSED)
{
  static char * opar[] = { "ld", "cp", "in", "out" };
  char * op;
  char c;
 
  c = buf->data[1];
  op = ((0x13 & c) == 0x13) ? "ot" : (opar[c & 3]);
  info->fprintf_func (info->stream,
                      "%s%c%s", op,
                      (c & 0x08) ? 'd' : 'i',
                      (c & 0x10) ? "r" : "");
  buf->n_used = 2;
  return buf->n_used;
}
 
static int
dump (struct buffer *buf, disassemble_info * info, char *txt)
{
  int i;
 
  info->fprintf_func (info->stream, "defb ");
  for (i = 0; txt[i]; ++i)
    info->fprintf_func (info->stream, i ? ", 0x%02x" : "0x%02x",
                        (unsigned char) buf->data[i]);
  buf->n_used = i;
  return buf->n_used;
}
 
/* Table to disassemble machine codes with prefix 0xED.  */
struct tab_elt opc_ed[] =
{
  { 0x70, 0xFF, prt, "in f,(c)" },
  { 0x70, 0xFF, dump, "xx" },
  { 0x40, 0xC7, prt_r, "in %s,(c)" },
  { 0x71, 0xFF, prt, "out (c),0" },
  { 0x70, 0xFF, dump, "xx" },
  { 0x41, 0xC7, prt_r, "out (c),%s" },
  { 0x42, 0xCF, prt_rr, "sbc hl," },
  { 0x43, 0xCF, prt_rr_nn, "ld (0x%%04x),%s" },
  { 0x44, 0xFF, prt, "neg" },
  { 0x45, 0xFF, prt, "retn" },
  { 0x46, 0xFF, prt, "im 0" },
  { 0x47, 0xFF, prt, "ld i,a" },
  { 0x4A, 0xCF, prt_rr, "adc hl," },
  { 0x4B, 0xCF, prt_rr_nn, "ld %s,(0x%%04x)" },
  { 0x4D, 0xFF, prt, "reti" },
  { 0x4F, 0xFF, prt, "ld r,a" },
  { 0x56, 0xFF, prt, "im 1" },
  { 0x57, 0xFF, prt, "ld a,i" },
  { 0x5E, 0xFF, prt, "im 2" },
  { 0x5F, 0xFF, prt, "ld a,r" },
  { 0x67, 0xFF, prt, "rrd" },
  { 0x6F, 0xFF, prt, "rld" },
  { 0xA0, 0xE4, cis, "" },
  { 0xC3, 0xFF, prt, "muluw hl,bc" },
  { 0xC5, 0xE7, prt_r, "mulub a,%s" },
  { 0xF3, 0xFF, prt, "muluw hl,sp" },
  { 0x00, 0x00, dump, "xx" }
};
 
static int
pref_ed (struct buffer * buf, disassemble_info * info,
         char* txt ATTRIBUTE_UNUSED)
{
  struct tab_elt *p;
 
  if (fetch_data(buf, info, 1))
    {
      for (p = opc_ed; p->val != (buf->data[1] & p->mask); ++p)
        ;
      p->fp (buf, info, p->text);
    }
  else
    buf->n_used = -1;
 
  return buf->n_used;
}
 
/* Instruction names for the instructions addressing single bits.  */
static char *cb1_str[] = { "", "bit", "res", "set"};
/* Instruction names for shifts and rotates.  */
static char *cb2_str[] =
{
  "rlc", "rrc", "rl", "rr", "sla", "sra", "sli", "srl"
};
 
static int
pref_cb (struct buffer * buf, disassemble_info * info,
         char* txt ATTRIBUTE_UNUSED)
{
  if (fetch_data (buf, info, 1))
    {
      buf->n_used = 2;
      if ((buf->data[1] & 0xc0) == 0)
        info->fprintf_func (info->stream, "%s %s",
                            cb2_str[(buf->data[1] >> 3) & 7],
                            r_str[buf->data[1] & 7]);
      else
        info->fprintf_func (info->stream, "%s %d,%s",
                            cb1_str[(buf->data[1] >> 6) & 3],
                            (buf->data[1] >> 3) & 7,
                            r_str[buf->data[1] & 7]);
    }
  else
    buf->n_used = -1;
 
  return buf->n_used;
}
 
static int
addvv (struct buffer * buf, disassemble_info * info, char* txt)
{
  info->fprintf_func (info->stream, "add %s,%s", txt, txt);
 
  return buf->n_used = buf->n_fetch;
}
 
static int
ld_v_v (struct buffer * buf, disassemble_info * info, char* txt)
{
  char mytxt[TXTSIZ];
 
  snprintf (mytxt, TXTSIZ, "ld %s%%s,%s%%s", txt, txt);
  return ld_r_r (buf, info, mytxt);
}
 
static int
prt_d (struct buffer *buf, disassemble_info * info, char *txt)
{
  int d;
  signed char *p;
 
  p = buf->data + buf->n_fetch;
 
  if (fetch_data (buf, info, 1))
    {
      d = p[0];
      info->fprintf_func (info->stream, txt, d);
      buf->n_used = buf->n_fetch;
    }
  else
    buf->n_used = -1;
 
  return buf->n_used;
}
 
static int
prt_d_n (struct buffer *buf, disassemble_info * info, char *txt)
{
  char mytxt[TXTSIZ];
  int d;
  signed char *p;
 
  p = buf->data + buf->n_fetch;
 
  if (fetch_data (buf, info, 1))
    {
      d = p[0];
      snprintf (mytxt, TXTSIZ, txt, d);
      return prt_n (buf, info, mytxt);
    }
  else
    buf->n_used = -1;
 
  return buf->n_used;
}
 
static int
arit_d (struct buffer *buf, disassemble_info * info, char *txt)
{
  char mytxt[TXTSIZ];
  signed char c;
 
  c = buf->data[buf->n_fetch - 1];
  snprintf (mytxt, TXTSIZ, txt, arit_str[(c >> 3) & 7]);
  return prt_d (buf, info, mytxt);
}
 
static int
ld_r_d (struct buffer *buf, disassemble_info * info, char *txt)
{
  char mytxt[TXTSIZ];
  signed char c;
 
  c = buf->data[buf->n_fetch - 1];
  snprintf (mytxt, TXTSIZ, txt, r_str[(c >> 3) & 7]);
  return prt_d (buf, info, mytxt);
}
 
static int
ld_d_r(struct buffer *buf, disassemble_info * info, char *txt)
{
  char mytxt[TXTSIZ];
  signed char c;
 
  c = buf->data[buf->n_fetch - 1];
  snprintf (mytxt, TXTSIZ, txt, r_str[c & 7]);
  return prt_d (buf, info, mytxt);
}
 
static int
pref_xd_cb (struct buffer * buf, disassemble_info * info, char* txt)
{
  if (fetch_data (buf, info, 2))
    {
      int d;
      char arg[TXTSIZ];
      signed char *p;
 
      buf->n_used = 4;
      p = buf->data;
      d = p[2];
 
      if (((p[3] & 0xC0) == 0x40) || ((p[3] & 7) == 0x06))
        snprintf (arg, TXTSIZ, "(%s%+d)", txt, d);
      else
        snprintf (arg, TXTSIZ, "(%s%+d),%s", txt, d, r_str[p[3] & 7]);
 
      if ((p[3] & 0xc0) == 0)
        info->fprintf_func (info->stream, "%s %s",
                            cb2_str[(buf->data[3] >> 3) & 7],
                            arg);
      else
        info->fprintf_func (info->stream, "%s %d,%s",
                            cb1_str[(buf->data[3] >> 6) & 3],
                            (buf->data[3] >> 3) & 7,
                            arg);
    }
  else
    buf->n_used = -1;
 
  return buf->n_used;
}
 
/* Table to disassemble machine codes with prefix 0xDD or 0xFD.  */
static struct tab_elt opc_ind[] =
{
  { 0x24, 0xF7, prt_r, "inc %s%%s" },
  { 0x25, 0xF7, prt_r, "dec %s%%s" },
  { 0x26, 0xF7, ld_r_n, "ld %s%%s,0x%%%%02x" },
  { 0x21, 0xFF, prt_nn, "ld %s,0x%%04x" },
  { 0x22, 0xFF, prt_nn, "ld (0x%%04x),%s" },
  { 0x2A, 0xFF, prt_nn, "ld %s,(0x%%04x)" },
  { 0x23, 0xFF, prt, "inc %s" },
  { 0x2B, 0xFF, prt, "dec %s" },
  { 0x29, 0xFF, addvv, "%s" },
  { 0x09, 0xCF, prt_rr, "add %s," },
  { 0x34, 0xFF, prt_d, "inc (%s%%+d)" },
  { 0x35, 0xFF, prt_d, "dec (%s%%+d)" },
  { 0x36, 0xFF, prt_d_n, "ld (%s%%+d),0x%%%%02x" },
 
  { 0x76, 0xFF, dump, "h" },
  { 0x46, 0xC7, ld_r_d, "ld %%s,(%s%%%%+d)" },
  { 0x70, 0xF8, ld_d_r, "ld (%s%%%%+d),%%s" },
  { 0x64, 0xF6, ld_v_v, "%s" },
  { 0x60, 0xF0, ld_r_r, "ld %s%%s,%%s" },
  { 0x44, 0xC6, ld_r_r, "ld %%s,%s%%s" },
 
  { 0x86, 0xC7, arit_d, "%%s(%s%%%%+d)" },
  { 0x84, 0xC6, arit_r, "%%s%s%%s" },
 
  { 0xE1, 0xFF, prt, "pop %s" },
  { 0xE5, 0xFF, prt, "push %s" },
  { 0xCB, 0xFF, pref_xd_cb, "%s" },
  { 0xE3, 0xFF, prt, "ex (sp),%s" },
  { 0xE9, 0xFF, prt, "jp (%s)" },
  { 0xF9, 0xFF, prt, "ld sp,%s" },
  { 0x00, 0x00, dump, "?" },
} ;
 
static int
pref_ind (struct buffer * buf, disassemble_info * info, char* txt)
{
  if (fetch_data (buf, info, 1))
    {
      char mytxt[TXTSIZ];
      struct tab_elt *p;
 
      for (p = opc_ind; p->val != (buf->data[1] & p->mask); ++p)
        ;
      snprintf (mytxt, TXTSIZ, p->text, txt);
      p->fp (buf, info, mytxt);
    }
  else
    buf->n_used = -1;
 
  return buf->n_used;
}
 
/* Table to disassemble machine codes without prefix.  */
static struct tab_elt opc_main[] =
{
  { 0x00, 0xFF, prt, "nop" },
  { 0x01, 0xCF, prt_rr_nn, "ld %s,0x%%04x" },
  { 0x02, 0xFF, prt, "ld (bc),a" },
  { 0x03, 0xCF, prt_rr, "inc " },
  { 0x04, 0xC7, prt_r, "inc %s" },
  { 0x05, 0xC7, prt_r, "dec %s" },
  { 0x06, 0xC7, ld_r_n, "ld %s,0x%%02x" },
  { 0x07, 0xFF, prt, "rlca" },
  { 0x08, 0xFF, prt, "ex af,af'" },
  { 0x09, 0xCF, prt_rr, "add hl," },
  { 0x0A, 0xFF, prt, "ld a,(bc)" },
  { 0x0B, 0xCF, prt_rr, "dec " },
  { 0x0F, 0xFF, prt, "rrca" },
  { 0x10, 0xFF, prt_e, "djnz " },
  { 0x12, 0xFF, prt, "ld (de),a" },
  { 0x17, 0xFF, prt, "rla" },
  { 0x18, 0xFF, prt_e, "jr "},
  { 0x1A, 0xFF, prt, "ld a,(de)" },
  { 0x1F, 0xFF, prt, "rra" },
  { 0x20, 0xE7, jr_cc, "jr %s,"},
  { 0x22, 0xFF, prt_nn, "ld (0x%04x),hl" },
  { 0x27, 0xFF, prt, "daa"},
  { 0x2A, 0xFF, prt_nn, "ld hl,(0x%04x)" },
  { 0x2F, 0xFF, prt, "cpl" },
  { 0x32, 0xFF, prt_nn, "ld (0x%04x),a" },
  { 0x37, 0xFF, prt, "scf" },
  { 0x3A, 0xFF, prt_nn, "ld a,(0x%04x)" },
  { 0x3F, 0xFF, prt, "ccf" },
 
  { 0x76, 0xFF, prt, "halt" },
  { 0x40, 0xC0, ld_r_r, "ld %s,%s"},
 
  { 0x80, 0xC0, arit_r, "%s%s" },
 
  { 0xC0, 0xC7, prt_cc, "ret " },
  { 0xC1, 0xCF, pop_rr, "pop" },
  { 0xC2, 0xC7, jp_cc_nn, "jp " },
  { 0xC3, 0xFF, prt_nn, "jp 0x%04x" },
  { 0xC4, 0xC7, jp_cc_nn, "call " },
  { 0xC5, 0xCF, pop_rr, "push" },
  { 0xC6, 0xC7, arit_n, "%s0x%%02x" },
  { 0xC7, 0xC7, rst, "rst 0x%02x" },
  { 0xC9, 0xFF, prt, "ret" },
  { 0xCB, 0xFF, pref_cb, "" },
  { 0xCD, 0xFF, prt_nn, "call 0x%04x" },
  { 0xD3, 0xFF, prt_n, "out (0x%02x),a" },
  { 0xD9, 0xFF, prt, "exx" },
  { 0xDB, 0xFF, prt_n, "in a,(0x%02x)" },
  { 0xDD, 0xFF, pref_ind, "ix" },
  { 0xE3, 0xFF, prt, "ex (sp),hl" },
  { 0xE9, 0xFF, prt, "jp (hl)" },
  { 0xEB, 0xFF, prt, "ex de,hl" },
  { 0xED, 0xFF, pref_ed, ""},
  { 0xF3, 0xFF, prt, "di" },
  { 0xF9, 0xFF, prt, "ld sp,hl" },
  { 0xFB, 0xFF, prt, "ei" },
  { 0xFD, 0xFF, pref_ind, "iy" },
  { 0x00, 0x00, prt, "????" },
} ;
 
int
print_insn_z80 (bfd_vma addr, disassemble_info * info)
{
  struct buffer buf;
  struct tab_elt *p;
 
  buf.base = addr;
  buf.n_fetch = 0;
  buf.n_used = 0;
 
  if (! fetch_data (& buf, info, 1))
    return -1;
 
  for (p = opc_main; p->val != (buf.data[0] & p->mask); ++p)
    ;
  p->fp (& buf, info, p->text);
 
  return buf.n_used;
}

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[/] [openrisc/] [trunk/] [gnu-old/] [gdb-7.1/] [opcodes/] [z80-dis.c] - Blame information for rev 849

Line No.	Rev	Author	Line
1	227	jeremybenn	`/* Print Z80 and R800 instructions`
2			`Copyright 2005, 2006, 2007, 2008 Free Software Foundation, Inc.`
3			`Contributed by Arnold Metselaar <arnold_m@operamail.com>`
4
5			`This file is part of the GNU opcodes library.`
6
7			`This library is free software; you can redistribute it and/or modify`
8			`it under the terms of the GNU General Public License as published by`
9			`the Free Software Foundation; either version 3, or (at your option)`
10			`any later version.`
11
12			`It is distributed in the hope that it will be useful, but WITHOUT`
13			`ANY WARRANTY; without even the implied warranty of MERCHANTABILITY`
14			`or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public`
15			`License for more details.`
16
17			`You should have received a copy of the GNU General Public License`
18			`along with this program; if not, write to the Free Software`
19			`Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,`
20			`MA 02110-1301, USA. */`
21
22			`#include "sysdep.h"`
23			`#include "dis-asm.h"`
24			`#include <stdio.h>`
25
26			`struct buffer`
27			`{`
28			`bfd_vma base;`
29			`int n_fetch;`
30			`int n_used;`
31			`signed char data[4];`
32			`} ;`
33
34			`typedef int (func)(struct buffer , disassemble_info , char );`
35
36			`struct tab_elt`
37			`{`
38			`unsigned char val;`
39			`unsigned char mask;`
40			`func fp;`
41			`char * text;`
42			`} ;`
43
44			`#define TXTSIZ 24`
45			`/* Names of 16-bit registers. */`
46			`static char * rr_str[] = { "bc", "de", "hl", "sp" };`
47			`/* Names of 8-bit registers. */`
48			`static char * r_str[] = { "b", "c", "d", "e", "h", "l", "(hl)", "a" };`
49			`/* Texts for condition codes. */`
50			`static char * cc_str[] = { "nz", "z", "nc", "c", "po", "pe", "p", "m" };`
51			`/* Instruction names for 8-bit arithmetic, operand "a" is often implicit */`
52			`static char * arit_str[] =`
53			`{`
54			`"add a,", "adc a,", "sub ", "sbc a,", "and ", "xor ", "or ", "cp "`
55			`} ;`
56
57			`static int`
58			`fetch_data (struct buffer buf, disassemble_info info, int n)`
59			`{`
60			`int r;`
61
62			`if (buf->n_fetch + n > 4)`
63			`abort ();`
64
65			`r = info->read_memory_func (buf->base + buf->n_fetch,`
66			`(unsigned char*) buf->data + buf->n_fetch,`
67			`n, info);`
68			`if (r == 0)`
69			`buf->n_fetch += n;`
70			`return !r;`
71			`}`
72
73			`static int`
74			`prt (struct buffer buf, disassemble_info info, char *txt)`
75			`{`
76			`info->fprintf_func (info->stream, "%s", txt);`
77			`buf->n_used = buf->n_fetch;`
78			`return 1;`
79			`}`
80
81			`static int`
82			`prt_e (struct buffer buf, disassemble_info info, char *txt)`
83			`{`
84			`char e;`
85			`int target_addr;`
86
87			`if (fetch_data (buf, info, 1))`
88			`{`
89			`e = buf->data[1];`
90			`target_addr = (buf->base + 2 + e) & 0xffff;`
91			`buf->n_used = buf->n_fetch;`
92			`info->fprintf_func (info->stream, "%s0x%04x", txt, target_addr);`
93			`}`
94			`else`
95			`buf->n_used = -1;`
96
97			`return buf->n_used;`
98			`}`
99
100			`static int`
101			`jr_cc (struct buffer buf, disassemble_info info, char *txt)`
102			`{`
103			`char mytxt[TXTSIZ];`
104
105			`snprintf (mytxt, TXTSIZ, txt, cc_str[(buf->data[0] >> 3) & 3]);`
106			`return prt_e (buf, info, mytxt);`
107			`}`
108
109			`static int`
110			`prt_nn (struct buffer buf, disassemble_info info, char *txt)`
111			`{`
112			`int nn;`
113			`unsigned char *p;`
114
115			`p = (unsigned char*) buf->data + buf->n_fetch;`
116			`if (fetch_data (buf, info, 2))`
117			`{`
118			`nn = p[0] + (p[1] << 8);`
119			`info->fprintf_func (info->stream, txt, nn);`
120			`buf->n_used = buf->n_fetch;`
121			`}`
122			`else`
123			`buf->n_used = -1;`
124			`return buf->n_used;`
125			`}`
126
127			`static int`
128			`prt_rr_nn (struct buffer buf, disassemble_info info, char *txt)`
129			`{`
130			`char mytxt[TXTSIZ];`
131			`int rr;`
132
133			`rr = (buf->data[buf->n_fetch - 1] >> 4) & 3;`
134			`snprintf (mytxt, TXTSIZ, txt, rr_str[rr]);`
135			`return prt_nn (buf, info, mytxt);`
136			`}`
137
138			`static int`
139			`prt_rr (struct buffer buf, disassemble_info info, char *txt)`
140			`{`
141			`info->fprintf_func (info->stream, "%s%s", txt,`
142			`rr_str[(buf->data[buf->n_fetch - 1] >> 4) & 3]);`
143			`buf->n_used = buf->n_fetch;`
144			`return buf->n_used;`
145			`}`
146
147			`static int`
148			`prt_n (struct buffer buf, disassemble_info info, char *txt)`
149			`{`
150			`int n;`
151			`unsigned char *p;`
152
153			`p = (unsigned char*) buf->data + buf->n_fetch;`
154
155			`if (fetch_data (buf, info, 1))`
156			`{`
157			`n = p[0];`
158			`info->fprintf_func (info->stream, txt, n);`
159			`buf->n_used = buf->n_fetch;`
160			`}`
161			`else`
162			`buf->n_used = -1;`
163
164			`return buf->n_used;`
165			`}`
166
167			`static int`
168			`ld_r_n (struct buffer buf, disassemble_info info, char *txt)`
169			`{`
170			`char mytxt[TXTSIZ];`
171
172			`snprintf (mytxt, TXTSIZ, txt, r_str[(buf->data[0] >> 3) & 7]);`
173			`return prt_n (buf, info, mytxt);`
174			`}`
175
176			`static int`
177			`prt_r (struct buffer buf, disassemble_info info, char *txt)`
178			`{`
179			`info->fprintf_func (info->stream, txt,`
180			`r_str[(buf->data[buf->n_fetch - 1] >> 3) & 7]);`
181			`buf->n_used = buf->n_fetch;`
182			`return buf->n_used;`
183			`}`
184
185			`static int`
186			`ld_r_r (struct buffer buf, disassemble_info info, char *txt)`
187			`{`
188			`info->fprintf_func (info->stream, txt,`
189			`r_str[(buf->data[buf->n_fetch - 1] >> 3) & 7],`
190			`r_str[buf->data[buf->n_fetch - 1] & 7]);`
191			`buf->n_used = buf->n_fetch;`
192			`return buf->n_used;`
193			`}`
194
195			`static int`
196			`arit_r (struct buffer buf, disassemble_info info, char *txt)`
197			`{`
198			`info->fprintf_func (info->stream, txt,`
199			`arit_str[(buf->data[buf->n_fetch - 1] >> 3) & 7],`
200			`r_str[buf->data[buf->n_fetch - 1] & 7]);`
201			`buf->n_used = buf->n_fetch;`
202			`return buf->n_used;`
203			`}`
204
205			`static int`
206			`prt_cc (struct buffer buf, disassemble_info info, char *txt)`
207			`{`
208			`info->fprintf_func (info->stream, "%s%s", txt,`
209			`cc_str[(buf->data[0] >> 3) & 7]);`
210			`buf->n_used = buf->n_fetch;`
211			`return buf->n_used;`
212			`}`
213
214			`static int`
215			`pop_rr (struct buffer buf, disassemble_info info, char *txt)`
216			`{`
217			`static char *rr_stack[] = { "bc","de","hl","af"};`
218
219			`info->fprintf_func (info->stream, "%s %s", txt,`
220			`rr_stack[(buf->data[0] >> 4) & 3]);`
221			`buf->n_used = buf->n_fetch;`
222			`return buf->n_used;`
223			`}`
224
225
226			`static int`
227			`jp_cc_nn (struct buffer buf, disassemble_info info, char *txt)`
228			`{`
229			`char mytxt[TXTSIZ];`
230
231			`snprintf (mytxt,TXTSIZ,`
232			`"%s%s,0x%%04x", txt, cc_str[(buf->data[0] >> 3) & 7]);`
233			`return prt_nn (buf, info, mytxt);`
234			`}`
235
236			`static int`
237			`arit_n (struct buffer buf, disassemble_info info, char *txt)`
238			`{`
239			`char mytxt[TXTSIZ];`
240
241			`snprintf (mytxt,TXTSIZ, txt, arit_str[(buf->data[0] >> 3) & 7]);`
242			`return prt_n (buf, info, mytxt);`
243			`}`
244
245			`static int`
246			`rst (struct buffer buf, disassemble_info info, char *txt)`
247			`{`
248			`info->fprintf_func (info->stream, txt, buf->data[0] & 0x38);`
249			`buf->n_used = buf->n_fetch;`
250			`return buf->n_used;`
251			`}`
252
253
254			`static int`
255			`cis (struct buffer buf, disassemble_info info, char *txt ATTRIBUTE_UNUSED)`
256			`{`
257			`static char * opar[] = { "ld", "cp", "in", "out" };`
258			`char * op;`
259			`char c;`
260
261			`c = buf->data[1];`
262			`op = ((0x13 & c) == 0x13) ? "ot" : (opar[c & 3]);`
263			`info->fprintf_func (info->stream,`
264			`"%s%c%s", op,`
265			`(c & 0x08) ? 'd' : 'i',`
266			`(c & 0x10) ? "r" : "");`
267			`buf->n_used = 2;`
268			`return buf->n_used;`
269			`}`
270
271			`static int`
272			`dump (struct buffer buf, disassemble_info info, char *txt)`
273			`{`
274			`int i;`
275
276			`info->fprintf_func (info->stream, "defb ");`
277			`for (i = 0; txt[i]; ++i)`
278			`info->fprintf_func (info->stream, i ? ", 0x%02x" : "0x%02x",`
279			`(unsigned char) buf->data[i]);`
280			`buf->n_used = i;`
281			`return buf->n_used;`
282			`}`
283
284			`/* Table to disassemble machine codes with prefix 0xED. */`
285			`struct tab_elt opc_ed[] =`
286			`{`
287			`{ 0x70, 0xFF, prt, "in f,(c)" },`
288			`{ 0x70, 0xFF, dump, "xx" },`
289			`{ 0x40, 0xC7, prt_r, "in %s,(c)" },`
290			`{ 0x71, 0xFF, prt, "out (c),0" },`
291			`{ 0x70, 0xFF, dump, "xx" },`
292			`{ 0x41, 0xC7, prt_r, "out (c),%s" },`
293			`{ 0x42, 0xCF, prt_rr, "sbc hl," },`
294			`{ 0x43, 0xCF, prt_rr_nn, "ld (0x%%04x),%s" },`
295			`{ 0x44, 0xFF, prt, "neg" },`
296			`{ 0x45, 0xFF, prt, "retn" },`
297			`{ 0x46, 0xFF, prt, "im 0" },`
298			`{ 0x47, 0xFF, prt, "ld i,a" },`
299			`{ 0x4A, 0xCF, prt_rr, "adc hl," },`
300			`{ 0x4B, 0xCF, prt_rr_nn, "ld %s,(0x%%04x)" },`
301			`{ 0x4D, 0xFF, prt, "reti" },`
302			`{ 0x4F, 0xFF, prt, "ld r,a" },`
303			`{ 0x56, 0xFF, prt, "im 1" },`
304			`{ 0x57, 0xFF, prt, "ld a,i" },`
305			`{ 0x5E, 0xFF, prt, "im 2" },`
306			`{ 0x5F, 0xFF, prt, "ld a,r" },`
307			`{ 0x67, 0xFF, prt, "rrd" },`
308			`{ 0x6F, 0xFF, prt, "rld" },`
309			`{ 0xA0, 0xE4, cis, "" },`
310			`{ 0xC3, 0xFF, prt, "muluw hl,bc" },`
311			`{ 0xC5, 0xE7, prt_r, "mulub a,%s" },`
312			`{ 0xF3, 0xFF, prt, "muluw hl,sp" },`
313			`{ 0x00, 0x00, dump, "xx" }`
314			`};`
315
316			`static int`
317			`pref_ed (struct buffer * buf, disassemble_info * info,`
318			`char* txt ATTRIBUTE_UNUSED)`
319			`{`
320			`struct tab_elt *p;`
321
322			`if (fetch_data(buf, info, 1))`
323			`{`
324			`for (p = opc_ed; p->val != (buf->data[1] & p->mask); ++p)`
325			`;`
326			`p->fp (buf, info, p->text);`
327			`}`
328			`else`
329			`buf->n_used = -1;`
330
331			`return buf->n_used;`
332			`}`
333
334			`/* Instruction names for the instructions addressing single bits. */`
335			`static char *cb1_str[] = { "", "bit", "res", "set"};`
336			`/* Instruction names for shifts and rotates. */`
337			`static char *cb2_str[] =`
338			`{`
339			`"rlc", "rrc", "rl", "rr", "sla", "sra", "sli", "srl"`
340			`};`
341
342			`static int`
343			`pref_cb (struct buffer * buf, disassemble_info * info,`
344			`char* txt ATTRIBUTE_UNUSED)`
345			`{`
346			`if (fetch_data (buf, info, 1))`
347			`{`
348			`buf->n_used = 2;`
349			`if ((buf->data[1] & 0xc0) == 0)`
350			`info->fprintf_func (info->stream, "%s %s",`
351			`cb2_str[(buf->data[1] >> 3) & 7],`
352			`r_str[buf->data[1] & 7]);`
353			`else`
354			`info->fprintf_func (info->stream, "%s %d,%s",`
355			`cb1_str[(buf->data[1] >> 6) & 3],`
356			`(buf->data[1] >> 3) & 7,`
357			`r_str[buf->data[1] & 7]);`
358			`}`
359			`else`
360			`buf->n_used = -1;`
361
362			`return buf->n_used;`
363			`}`
364
365			`static int`
366			`addvv (struct buffer * buf, disassemble_info * info, char* txt)`
367			`{`
368			`info->fprintf_func (info->stream, "add %s,%s", txt, txt);`
369
370			`return buf->n_used = buf->n_fetch;`
371			`}`
372
373			`static int`
374			`ld_v_v (struct buffer * buf, disassemble_info * info, char* txt)`
375			`{`
376			`char mytxt[TXTSIZ];`
377
378			`snprintf (mytxt, TXTSIZ, "ld %s%%s,%s%%s", txt, txt);`
379			`return ld_r_r (buf, info, mytxt);`
380			`}`
381
382			`static int`
383			`prt_d (struct buffer buf, disassemble_info info, char *txt)`
384			`{`
385			`int d;`
386			`signed char *p;`
387
388			`p = buf->data + buf->n_fetch;`
389
390			`if (fetch_data (buf, info, 1))`
391			`{`
392			`d = p[0];`
393			`info->fprintf_func (info->stream, txt, d);`
394			`buf->n_used = buf->n_fetch;`
395			`}`
396			`else`
397			`buf->n_used = -1;`
398
399			`return buf->n_used;`
400			`}`
401
402			`static int`
403			`prt_d_n (struct buffer buf, disassemble_info info, char *txt)`
404			`{`
405			`char mytxt[TXTSIZ];`
406			`int d;`
407			`signed char *p;`
408
409			`p = buf->data + buf->n_fetch;`
410
411			`if (fetch_data (buf, info, 1))`
412			`{`
413			`d = p[0];`
414			`snprintf (mytxt, TXTSIZ, txt, d);`
415			`return prt_n (buf, info, mytxt);`
416			`}`
417			`else`
418			`buf->n_used = -1;`
419
420			`return buf->n_used;`
421			`}`
422
423			`static int`
424			`arit_d (struct buffer buf, disassemble_info info, char *txt)`
425			`{`
426			`char mytxt[TXTSIZ];`
427			`signed char c;`
428
429			`c = buf->data[buf->n_fetch - 1];`
430			`snprintf (mytxt, TXTSIZ, txt, arit_str[(c >> 3) & 7]);`
431			`return prt_d (buf, info, mytxt);`
432			`}`
433
434			`static int`
435			`ld_r_d (struct buffer buf, disassemble_info info, char *txt)`
436			`{`
437			`char mytxt[TXTSIZ];`
438			`signed char c;`
439
440			`c = buf->data[buf->n_fetch - 1];`
441			`snprintf (mytxt, TXTSIZ, txt, r_str[(c >> 3) & 7]);`
442			`return prt_d (buf, info, mytxt);`
443			`}`
444
445			`static int`
446			`ld_d_r(struct buffer buf, disassemble_info info, char *txt)`
447			`{`
448			`char mytxt[TXTSIZ];`
449			`signed char c;`
450
451			`c = buf->data[buf->n_fetch - 1];`
452			`snprintf (mytxt, TXTSIZ, txt, r_str[c & 7]);`
453			`return prt_d (buf, info, mytxt);`
454			`}`
455
456			`static int`
457			`pref_xd_cb (struct buffer * buf, disassemble_info * info, char* txt)`
458			`{`
459			`if (fetch_data (buf, info, 2))`
460			`{`
461			`int d;`
462			`char arg[TXTSIZ];`
463			`signed char *p;`
464
465			`buf->n_used = 4;`
466			`p = buf->data;`
467			`d = p[2];`
468
469			`if (((p[3] & 0xC0) == 0x40) \|\| ((p[3] & 7) == 0x06))`
470			`snprintf (arg, TXTSIZ, "(%s%+d)", txt, d);`
471			`else`
472			`snprintf (arg, TXTSIZ, "(%s%+d),%s", txt, d, r_str[p[3] & 7]);`
473
474			`if ((p[3] & 0xc0) == 0)`
475			`info->fprintf_func (info->stream, "%s %s",`
476			`cb2_str[(buf->data[3] >> 3) & 7],`
477			`arg);`
478			`else`
479			`info->fprintf_func (info->stream, "%s %d,%s",`
480			`cb1_str[(buf->data[3] >> 6) & 3],`
481			`(buf->data[3] >> 3) & 7,`
482			`arg);`
483			`}`
484			`else`
485			`buf->n_used = -1;`
486
487			`return buf->n_used;`
488			`}`
489
490			`/* Table to disassemble machine codes with prefix 0xDD or 0xFD. */`
491			`static struct tab_elt opc_ind[] =`
492			`{`
493			`{ 0x24, 0xF7, prt_r, "inc %s%%s" },`
494			`{ 0x25, 0xF7, prt_r, "dec %s%%s" },`
495			`{ 0x26, 0xF7, ld_r_n, "ld %s%%s,0x%%%%02x" },`
496			`{ 0x21, 0xFF, prt_nn, "ld %s,0x%%04x" },`
497			`{ 0x22, 0xFF, prt_nn, "ld (0x%%04x),%s" },`
498			`{ 0x2A, 0xFF, prt_nn, "ld %s,(0x%%04x)" },`
499			`{ 0x23, 0xFF, prt, "inc %s" },`
500			`{ 0x2B, 0xFF, prt, "dec %s" },`
501			`{ 0x29, 0xFF, addvv, "%s" },`
502			`{ 0x09, 0xCF, prt_rr, "add %s," },`
503			`{ 0x34, 0xFF, prt_d, "inc (%s%%+d)" },`
504			`{ 0x35, 0xFF, prt_d, "dec (%s%%+d)" },`
505			`{ 0x36, 0xFF, prt_d_n, "ld (%s%%+d),0x%%%%02x" },`
506
507			`{ 0x76, 0xFF, dump, "h" },`
508			`{ 0x46, 0xC7, ld_r_d, "ld %%s,(%s%%%%+d)" },`
509			`{ 0x70, 0xF8, ld_d_r, "ld (%s%%%%+d),%%s" },`
510			`{ 0x64, 0xF6, ld_v_v, "%s" },`
511			`{ 0x60, 0xF0, ld_r_r, "ld %s%%s,%%s" },`
512			`{ 0x44, 0xC6, ld_r_r, "ld %%s,%s%%s" },`
513
514			`{ 0x86, 0xC7, arit_d, "%%s(%s%%%%+d)" },`
515			`{ 0x84, 0xC6, arit_r, "%%s%s%%s" },`
516
517			`{ 0xE1, 0xFF, prt, "pop %s" },`
518			`{ 0xE5, 0xFF, prt, "push %s" },`
519			`{ 0xCB, 0xFF, pref_xd_cb, "%s" },`
520			`{ 0xE3, 0xFF, prt, "ex (sp),%s" },`
521			`{ 0xE9, 0xFF, prt, "jp (%s)" },`
522			`{ 0xF9, 0xFF, prt, "ld sp,%s" },`
523			`{ 0x00, 0x00, dump, "?" },`
524			`} ;`
525
526			`static int`
527			`pref_ind (struct buffer * buf, disassemble_info * info, char* txt)`
528			`{`
529			`if (fetch_data (buf, info, 1))`
530			`{`
531			`char mytxt[TXTSIZ];`
532			`struct tab_elt *p;`
533
534			`for (p = opc_ind; p->val != (buf->data[1] & p->mask); ++p)`
535			`;`
536			`snprintf (mytxt, TXTSIZ, p->text, txt);`
537			`p->fp (buf, info, mytxt);`
538			`}`
539			`else`
540			`buf->n_used = -1;`
541
542			`return buf->n_used;`
543			`}`
544
545			`/* Table to disassemble machine codes without prefix. */`
546			`static struct tab_elt opc_main[] =`
547			`{`
548			`{ 0x00, 0xFF, prt, "nop" },`
549			`{ 0x01, 0xCF, prt_rr_nn, "ld %s,0x%%04x" },`
550			`{ 0x02, 0xFF, prt, "ld (bc),a" },`
551			`{ 0x03, 0xCF, prt_rr, "inc " },`
552			`{ 0x04, 0xC7, prt_r, "inc %s" },`
553			`{ 0x05, 0xC7, prt_r, "dec %s" },`
554			`{ 0x06, 0xC7, ld_r_n, "ld %s,0x%%02x" },`
555			`{ 0x07, 0xFF, prt, "rlca" },`
556			`{ 0x08, 0xFF, prt, "ex af,af'" },`
557			`{ 0x09, 0xCF, prt_rr, "add hl," },`
558			`{ 0x0A, 0xFF, prt, "ld a,(bc)" },`
559			`{ 0x0B, 0xCF, prt_rr, "dec " },`
560			`{ 0x0F, 0xFF, prt, "rrca" },`
561			`{ 0x10, 0xFF, prt_e, "djnz " },`
562			`{ 0x12, 0xFF, prt, "ld (de),a" },`
563			`{ 0x17, 0xFF, prt, "rla" },`
564			`{ 0x18, 0xFF, prt_e, "jr "},`
565			`{ 0x1A, 0xFF, prt, "ld a,(de)" },`
566			`{ 0x1F, 0xFF, prt, "rra" },`
567			`{ 0x20, 0xE7, jr_cc, "jr %s,"},`
568			`{ 0x22, 0xFF, prt_nn, "ld (0x%04x),hl" },`
569			`{ 0x27, 0xFF, prt, "daa"},`
570			`{ 0x2A, 0xFF, prt_nn, "ld hl,(0x%04x)" },`
571			`{ 0x2F, 0xFF, prt, "cpl" },`
572			`{ 0x32, 0xFF, prt_nn, "ld (0x%04x),a" },`
573			`{ 0x37, 0xFF, prt, "scf" },`
574			`{ 0x3A, 0xFF, prt_nn, "ld a,(0x%04x)" },`
575			`{ 0x3F, 0xFF, prt, "ccf" },`
576
577			`{ 0x76, 0xFF, prt, "halt" },`
578			`{ 0x40, 0xC0, ld_r_r, "ld %s,%s"},`
579
580			`{ 0x80, 0xC0, arit_r, "%s%s" },`
581
582			`{ 0xC0, 0xC7, prt_cc, "ret " },`
583			`{ 0xC1, 0xCF, pop_rr, "pop" },`
584			`{ 0xC2, 0xC7, jp_cc_nn, "jp " },`
585			`{ 0xC3, 0xFF, prt_nn, "jp 0x%04x" },`
586			`{ 0xC4, 0xC7, jp_cc_nn, "call " },`
587			`{ 0xC5, 0xCF, pop_rr, "push" },`
588			`{ 0xC6, 0xC7, arit_n, "%s0x%%02x" },`
589			`{ 0xC7, 0xC7, rst, "rst 0x%02x" },`
590			`{ 0xC9, 0xFF, prt, "ret" },`
591			`{ 0xCB, 0xFF, pref_cb, "" },`
592			`{ 0xCD, 0xFF, prt_nn, "call 0x%04x" },`
593			`{ 0xD3, 0xFF, prt_n, "out (0x%02x),a" },`
594			`{ 0xD9, 0xFF, prt, "exx" },`
595			`{ 0xDB, 0xFF, prt_n, "in a,(0x%02x)" },`
596			`{ 0xDD, 0xFF, pref_ind, "ix" },`
597			`{ 0xE3, 0xFF, prt, "ex (sp),hl" },`
598			`{ 0xE9, 0xFF, prt, "jp (hl)" },`
599			`{ 0xEB, 0xFF, prt, "ex de,hl" },`
600			`{ 0xED, 0xFF, pref_ed, ""},`
601			`{ 0xF3, 0xFF, prt, "di" },`
602			`{ 0xF9, 0xFF, prt, "ld sp,hl" },`
603			`{ 0xFB, 0xFF, prt, "ei" },`
604			`{ 0xFD, 0xFF, pref_ind, "iy" },`
605			`{ 0x00, 0x00, prt, "????" },`
606			`} ;`
607
608			`int`
609			`print_insn_z80 (bfd_vma addr, disassemble_info * info)`
610			`{`
611			`struct buffer buf;`
612			`struct tab_elt *p;`
613
614			`buf.base = addr;`
615			`buf.n_fetch = 0;`
616			`buf.n_used = 0;`
617
618			`if (! fetch_data (& buf, info, 1))`
619			`return -1;`
620
621			`for (p = opc_main; p->val != (buf.data[0] & p->mask); ++p)`
622			`;`
623			`p->fp (& buf, info, p->text);`
624
625			`return buf.n_used;`
626			`}`