623 lines
15 KiB
C
623 lines
15 KiB
C
/* Print Z80 and R800 instructions
|
||
Copyright 2005, 2007 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];
|
||
|
||
snprintf (mytxt, TXTSIZ, txt, rr_str[(buf->data[0] >> 4) & 3]);
|
||
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" },
|
||
{ 0x56, 0xFF, prt, "im 1" },
|
||
{ 0x57, 0xFF, prt, "ld a,i" },
|
||
{ 0x5E, 0xFF, prt, "im 2" },
|
||
{ 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;
|
||
}
|