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