/* Disassemble z8000 code.
- Copyright 1992, 1993, 1995, 1998 Free Software Foundation, Inc.
+ Copyright (C) 1992-2020 Free Software Foundation, Inc.
-This file is part of GNU Binutils.
+ This file is part of the GNU opcodes library.
-This program 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 2 of the License, or
-(at your option) any later version.
+ 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.
-This program 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.
+ 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ You should have received a copy of the GNU General Public License
+ along with this file; see the file COPYING. If not, write to the
+ Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
-#include <ansidecl.h>
#include "sysdep.h"
-#include "dis-asm.h"
+#include "disassemble.h"
+#include "libiberty.h"
#define DEFINE_TABLE
#include "z8k-opc.h"
-\f
#include <setjmp.h>
-\f
typedef struct
{
/* These are all indexed by nibble number (i.e only every other entry
unsigned short words[24];
/* Nibble number of first word not yet fetched. */
- int max_fetched;
+ unsigned int max_fetched;
bfd_vma insn_start;
- jmp_buf bailout;
+ OPCODES_SIGJMP_BUF bailout;
- long tabl_index;
+ int tabl_index;
char instr_asmsrc[80];
unsigned long arg_reg[0x0f];
unsigned long immediate;
to ADDR (exclusive) are valid. Returns 1 for success, longjmps
on error. */
#define FETCH_DATA(info, nibble) \
- ((nibble) < ((instr_data_s *)(info->private_data))->max_fetched \
+ ((nibble) < ((instr_data_s *) (info->private_data))->max_fetched \
? 1 : fetch_data ((info), (nibble)))
static int
-fetch_data (info, nibble)
- struct disassemble_info *info;
- int nibble;
+fetch_data (struct disassemble_info *info, int nibble)
{
unsigned char mybuf[20];
int status;
- instr_data_s *priv = (instr_data_s *)info->private_data;
+ instr_data_s *priv = (instr_data_s *) info->private_data;
if ((nibble % 4) != 0)
abort ();
if (status != 0)
{
(*info->memory_error_func) (status, priv->insn_start, info);
- longjmp (priv->bailout, 1);
+ OPCODES_SIGLONGJMP (priv->bailout, 1);
}
{
int i;
- unsigned char *p = mybuf ;
-
+ unsigned char *p = mybuf;
+
for (i = 0; i < nibble;)
{
priv->words[i] = (p[0] << 8) | p[1];
-
+
priv->bytes[i] = *p;
priv->nibbles[i++] = *p >> 4;
- priv->nibbles[i++] = *p &0xf;
+ priv->nibbles[i++] = *p & 0xf;
++p;
priv->bytes[i] = *p;
}
static char *codes[16] =
-{
- "f",
- "lt",
- "le",
- "ule",
- "ov/pe",
- "mi",
- "eq",
- "c/ult",
- "t",
- "ge",
- "gt",
- "ugt",
- "nov/po",
- "pl",
- "ne",
- "nc/uge"
-};
-
-int z8k_lookup_instr PARAMS ((unsigned char*, disassemble_info *));
-static void output_instr
- PARAMS ((instr_data_s *, unsigned long, disassemble_info *));
-static void unpack_instr PARAMS ((instr_data_s *, int, disassemble_info *));
-static void unparse_instr PARAMS ((instr_data_s *));
+ {
+ "f",
+ "lt",
+ "le",
+ "ule",
+ "ov/pe",
+ "mi",
+ "eq",
+ "c/ult",
+ "t",
+ "ge",
+ "gt",
+ "ugt",
+ "nov/po",
+ "pl",
+ "ne",
+ "nc/uge"
+ };
+
+static char *ctrl_names[8] =
+ {
+ "<invld>",
+ "flags",
+ "fcw",
+ "refresh",
+ "psapseg",
+ "psapoff",
+ "nspseg",
+ "nspoff"
+ };
+
+static int seg_length;
+int z8k_lookup_instr (unsigned char *, disassemble_info *);
+static void output_instr (instr_data_s *, unsigned long, disassemble_info *);
+static void unpack_instr (instr_data_s *, int, disassemble_info *);
+static void unparse_instr (instr_data_s *, int);
static int
-print_insn_z8k (addr, info, is_segmented)
- bfd_vma addr;
- disassemble_info *info;
- int is_segmented;
+print_insn_z8k (bfd_vma addr, disassemble_info *info, int is_segmented)
{
instr_data_s instr_data;
info->private_data = (PTR) &instr_data;
instr_data.max_fetched = 0;
instr_data.insn_start = addr;
- if (setjmp (instr_data.bailout) != 0)
+ if (OPCODES_SIGSETJMP (instr_data.bailout) != 0)
/* Error return. */
return -1;
+ info->bytes_per_chunk = 2;
+ info->bytes_per_line = 6;
+ info->display_endian = BFD_ENDIAN_BIG;
+
instr_data.tabl_index = z8k_lookup_instr (instr_data.nibbles, info);
- if (instr_data.tabl_index > 0)
+ if (instr_data.tabl_index >= 0)
{
unpack_instr (&instr_data, is_segmented, info);
- unparse_instr (&instr_data);
+ unparse_instr (&instr_data, is_segmented);
output_instr (&instr_data, addr, info);
- return z8k_table[instr_data.tabl_index].length;
+ return z8k_table[instr_data.tabl_index].length + seg_length;
}
else
{
}
int
-print_insn_z8001 (addr, info)
- bfd_vma addr;
- disassemble_info *info;
+print_insn_z8001 (bfd_vma addr, disassemble_info *info)
{
return print_insn_z8k (addr, info, 1);
}
int
-print_insn_z8002 (addr, info)
- bfd_vma addr;
- disassemble_info *info;
+print_insn_z8002 (bfd_vma addr, disassemble_info *info)
{
return print_insn_z8k (addr, info, 0);
}
int
-z8k_lookup_instr (nibbles, info)
- unsigned char *nibbles;
- disassemble_info *info;
+z8k_lookup_instr (unsigned char *nibbles, disassemble_info *info)
{
-
- int nibl_index, tabl_index;
+ unsigned int nibl_index, tabl_index;
int nibl_matched;
+ int need_fetch = 0;
unsigned short instr_nibl;
unsigned short tabl_datum, datum_class, datum_value;
nibl_matched = 0;
tabl_index = 0;
+ FETCH_DATA (info, 4);
while (!nibl_matched && z8k_table[tabl_index].name)
{
nibl_matched = 1;
- for (nibl_index = 0; nibl_index < z8k_table[tabl_index].length * 2 && nibl_matched; nibl_index++)
+ for (nibl_index = 0;
+ nibl_matched
+ && nibl_index < ARRAY_SIZE (z8k_table[0].byte_info)
+ && nibl_index < z8k_table[tabl_index].length * 2;
+ nibl_index++)
{
if ((nibl_index % 4) == 0)
- /* Fetch one word at a time. */
- FETCH_DATA (info, nibl_index + 4);
+ {
+ /* Fetch data only if it isn't already there. */
+ if (nibl_index >= 4 || (nibl_index < 4 && need_fetch))
+ FETCH_DATA (info, nibl_index + 4); /* Fetch one word at a time. */
+ if (nibl_index < 4)
+ need_fetch = 0;
+ else
+ need_fetch = 1;
+ }
instr_nibl = nibbles[nibl_index];
tabl_datum = z8k_table[tabl_index].byte_info[nibl_index];
if (datum_value != instr_nibl)
nibl_matched = 0;
break;
+ case CLASS_IGNORE:
+ break;
case CLASS_00II:
if (!((~instr_nibl) & 0x4))
nibl_matched = 0;
break;
}
}
+
if (nibl_matched)
- {
- return tabl_index;
- }
+ return tabl_index;
tabl_index++;
}
return -1;
-
}
static void
-output_instr (instr_data, addr, info)
- instr_data_s *instr_data;
- unsigned long addr;
- disassemble_info *info;
+output_instr (instr_data_s *instr_data,
+ unsigned long addr ATTRIBUTE_UNUSED,
+ disassemble_info *info)
{
- int loop, loop_limit;
- char tmp_str[20];
+ unsigned int num_bytes;
char out_str[100];
- strcpy (out_str, "\t");
+ out_str[0] = 0;
- loop_limit = z8k_table[instr_data->tabl_index].length * 2;
- FETCH_DATA (info, loop_limit);
- for (loop = 0; loop < loop_limit; loop++)
- {
- sprintf (tmp_str, "%x", instr_data->nibbles[loop]);
- strcat (out_str, tmp_str);
- }
-
- while (loop++ < 8)
- {
- strcat (out_str, " ");
- }
+ num_bytes = (z8k_table[instr_data->tabl_index].length + seg_length) * 2;
+ FETCH_DATA (info, num_bytes);
strcat (out_str, instr_data->instr_asmsrc);
}
static void
-unpack_instr (instr_data, is_segmented, info)
- instr_data_s *instr_data;
- int is_segmented;
- disassemble_info *info;
+unpack_instr (instr_data_s *instr_data, int is_segmented, disassemble_info *info)
{
- int nibl_count, loop;
+ unsigned int nibl_count, loop;
unsigned short instr_nibl, instr_byte, instr_word;
long instr_long;
- unsigned short tabl_datum, datum_class, datum_value;
+ unsigned int tabl_datum, datum_class;
+ unsigned short datum_value;
nibl_count = 0;
loop = 0;
+ seg_length = 0;
+
while (z8k_table[instr_data->tabl_index].byte_info[loop] != 0)
{
FETCH_DATA (info, nibl_count + 4 - (nibl_count % 4));
instr_nibl = instr_data->nibbles[nibl_count];
- instr_byte = instr_data->bytes[nibl_count];
- instr_word = instr_data->words[nibl_count];
+ instr_byte = instr_data->bytes[nibl_count & ~1];
+ instr_word = instr_data->words[nibl_count & ~3];
tabl_datum = z8k_table[instr_data->tabl_index].byte_info[loop];
datum_class = tabl_datum & CLASS_MASK;
switch (datum_class)
{
- case CLASS_X:
- instr_data->address = instr_nibl;
- break;
- case CLASS_BA:
- instr_data->displacement = instr_nibl;
- break;
- case CLASS_BX:
- instr_data->arg_reg[datum_value] = instr_nibl;
- break;
case CLASS_DISP:
switch (datum_value)
{
case ARG_DISP16:
- instr_data->displacement = instr_word;
+ instr_data->displacement = instr_data->insn_start + 4
+ + (signed short) (instr_word & 0xffff);
nibl_count += 3;
break;
case ARG_DISP12:
- instr_data->displacement = instr_word & 0x0fff;
+ if (instr_word & 0x800)
+ /* Negative 12 bit displacement. */
+ instr_data->displacement = instr_data->insn_start + 2
+ - (signed short) ((instr_word & 0xfff) | 0xf000) * 2;
+ else
+ instr_data->displacement = instr_data->insn_start + 2
+ - (instr_word & 0x0fff) * 2;
+
nibl_count += 2;
break;
default:
case ARG_IMM4:
instr_data->immediate = instr_nibl;
break;
+ case ARG_NIM4:
+ instr_data->immediate = (- instr_nibl) & 0xf;
+ break;
case ARG_NIM8:
- instr_data->immediate = (-instr_byte);
+ instr_data->immediate = (- instr_byte) & 0xff;
nibl_count += 1;
break;
case ARG_IMM8:
case CLASS_CC:
instr_data->cond_code = instr_nibl;
break;
- case CLASS_CTRL:
- instr_data->ctrl_code = instr_nibl;
- break;
- case CLASS_DA:
case CLASS_ADDRESS:
if (is_segmented)
{
FETCH_DATA (info, nibl_count + 8);
instr_long = (instr_data->words[nibl_count] << 16)
| (instr_data->words[nibl_count + 4]);
- instr_data->address = ((instr_word & 0x7f00) << 8) +
- (instr_long & 0xffff);
+ instr_data->address = ((instr_word & 0x7f00) << 16)
+ + (instr_long & 0xffff);
nibl_count += 7;
+ seg_length = 2;
}
else
{
- instr_data->address = ((instr_word & 0x7f00) << 8) +
- (instr_word & 0x00ff);
+ instr_data->address = ((instr_word & 0x7f00) << 16)
+ + (instr_word & 0x00ff);
nibl_count += 3;
}
}
}
break;
case CLASS_0CCC:
- instr_data->cond_code = instr_nibl & 0x7;
- break;
case CLASS_1CCC:
- instr_data->cond_code = instr_nibl & 0x7;
+ instr_data->ctrl_code = instr_nibl & 0x7;
break;
case CLASS_0DISP7:
- instr_data->displacement = instr_byte & 0x7f;
+ instr_data->displacement =
+ instr_data->insn_start + 2 - (instr_byte & 0x7f) * 2;
nibl_count += 1;
break;
case CLASS_1DISP7:
- instr_data->displacement = instr_byte & 0x7f;
+ instr_data->displacement =
+ instr_data->insn_start + 2 - (instr_byte & 0x7f) * 2;
nibl_count += 1;
break;
case CLASS_01II:
case CLASS_00II:
instr_data->interrupts = instr_nibl & 0x3;
break;
+ case CLASS_IGNORE:
case CLASS_BIT:
- /* do nothing */
- break;
- case CLASS_IR:
- instr_data->arg_reg[datum_value] = instr_nibl;
+ instr_data->ctrl_code = instr_nibl & 0x7;
break;
case CLASS_FLAGS:
instr_data->flags = instr_nibl;
case CLASS_REG:
instr_data->arg_reg[datum_value] = instr_nibl;
break;
- case CLASS_REG_BYTE:
- instr_data->arg_reg[datum_value] = instr_nibl;
- break;
- case CLASS_REG_WORD:
- instr_data->arg_reg[datum_value] = instr_nibl;
- break;
- case CLASS_REG_QUAD:
+ case CLASS_REGN0:
instr_data->arg_reg[datum_value] = instr_nibl;
break;
- case CLASS_REG_LONG:
- instr_data->arg_reg[datum_value] = instr_nibl;
+ case CLASS_DISP8:
+ instr_data->displacement =
+ instr_data->insn_start + 2 + (signed char) instr_byte * 2;
+ nibl_count += 1;
break;
- case CLASS_REGN0:
- instr_data->arg_reg[datum_value] = instr_nibl;
+ case CLASS_BIT_1OR2:
+ instr_data->immediate = ((instr_nibl >> 1) & 0x1) + 1;
+ nibl_count += 1;
break;
default:
+ abort ();
break;
}
}
static void
-unparse_instr (instr_data)
- instr_data_s *instr_data;
+print_intr(char *tmp_str, unsigned long interrupts)
{
- unsigned short tabl_datum, datum_class, datum_value;
+ int comma = 0;
+
+ *tmp_str = 0;
+ if (! (interrupts & 2))
+ {
+ strcat (tmp_str, "vi");
+ comma = 1;
+ }
+ if (! (interrupts & 1))
+ {
+ if (comma) strcat (tmp_str, ",");
+ strcat (tmp_str, "nvi");
+ }
+}
+
+static void
+print_flags(char *tmp_str, unsigned long flags)
+{
+ int comma = 0;
+
+ *tmp_str = 0;
+ if (flags & 8)
+ {
+ strcat (tmp_str, "c");
+ comma = 1;
+ }
+ if (flags & 4)
+ {
+ if (comma) strcat (tmp_str, ",");
+ strcat (tmp_str, "z");
+ comma = 1;
+ }
+ if (flags & 2)
+ {
+ if (comma) strcat (tmp_str, ",");
+ strcat (tmp_str, "s");
+ comma = 1;
+ }
+ if (flags & 1)
+ {
+ if (comma) strcat (tmp_str, ",");
+ strcat (tmp_str, "p");
+ }
+}
+
+static void
+unparse_instr (instr_data_s *instr_data, int is_segmented)
+{
+ unsigned short datum_value;
+ unsigned int tabl_datum, datum_class;
int loop, loop_limit;
char out_str[80], tmp_str[25];
- sprintf (out_str, "\t%s\t", z8k_table[instr_data->tabl_index].name);
+ sprintf (out_str, "%s\t", z8k_table[instr_data->tabl_index].name);
loop_limit = z8k_table[instr_data->tabl_index].noperands;
for (loop = 0; loop < loop_limit; loop++)
switch (datum_class)
{
case CLASS_X:
- sprintf (tmp_str, "0x%0lx(R%ld)", instr_data->address,
- instr_data->arg_reg[datum_value]);
+ sprintf (tmp_str, "0x%0lx(r%ld)", instr_data->address,
+ instr_data->arg_reg[datum_value]);
strcat (out_str, tmp_str);
break;
case CLASS_BA:
- sprintf (tmp_str, "r%ld(#%lx)", instr_data->arg_reg[datum_value],
- instr_data->immediate);
+ if (is_segmented)
+ sprintf (tmp_str, "rr%ld(#0x%lx)", instr_data->arg_reg[datum_value],
+ instr_data->immediate);
+ else
+ sprintf (tmp_str, "r%ld(#0x%lx)", instr_data->arg_reg[datum_value],
+ instr_data->immediate);
strcat (out_str, tmp_str);
break;
case CLASS_BX:
- sprintf (tmp_str, "r%ld(R%ld)", instr_data->arg_reg[datum_value],
- instr_data->arg_reg[ARG_RX]);
+ if (is_segmented)
+ sprintf (tmp_str, "rr%ld(r%ld)", instr_data->arg_reg[datum_value],
+ instr_data->arg_reg[ARG_RX]);
+ else
+ sprintf (tmp_str, "r%ld(r%ld)", instr_data->arg_reg[datum_value],
+ instr_data->arg_reg[ARG_RX]);
strcat (out_str, tmp_str);
break;
case CLASS_DISP:
- sprintf (tmp_str, "#0x%0lx", instr_data->displacement);
+ sprintf (tmp_str, "0x%0lx", instr_data->displacement);
strcat (out_str, tmp_str);
break;
case CLASS_IMM:
+ if (datum_value == ARG_IMM2) /* True with EI/DI instructions only. */
+ {
+ print_intr (tmp_str, instr_data->interrupts);
+ strcat (out_str, tmp_str);
+ break;
+ }
sprintf (tmp_str, "#0x%0lx", instr_data->immediate);
strcat (out_str, tmp_str);
break;
strcat (out_str, tmp_str);
break;
case CLASS_CTRL:
- sprintf (tmp_str, "0x%0lx", instr_data->ctrl_code);
+ sprintf (tmp_str, "%s", ctrl_names[instr_data->ctrl_code]);
strcat (out_str, tmp_str);
break;
case CLASS_DA:
case CLASS_ADDRESS:
- sprintf (tmp_str, "#0x%0lx", instr_data->address);
+ sprintf (tmp_str, "0x%0lx", instr_data->address);
strcat (out_str, tmp_str);
break;
case CLASS_IR:
- sprintf (tmp_str, "@R%ld", instr_data->arg_reg[datum_value]);
+ if (is_segmented)
+ sprintf (tmp_str, "@rr%ld", instr_data->arg_reg[datum_value]);
+ else
+ sprintf (tmp_str, "@r%ld", instr_data->arg_reg[datum_value]);
+ strcat (out_str, tmp_str);
+ break;
+ case CLASS_IRO:
+ sprintf (tmp_str, "@r%ld", instr_data->arg_reg[datum_value]);
strcat (out_str, tmp_str);
break;
case CLASS_FLAGS:
- sprintf (tmp_str, "0x%0lx", instr_data->flags);
+ print_flags(tmp_str, instr_data->flags);
strcat (out_str, tmp_str);
break;
case CLASS_REG_BYTE:
if (instr_data->arg_reg[datum_value] >= 0x8)
- {
- sprintf (tmp_str, "rl%ld",
- instr_data->arg_reg[datum_value] - 0x8);
- }
+ sprintf (tmp_str, "rl%ld",
+ instr_data->arg_reg[datum_value] - 0x8);
else
- {
- sprintf (tmp_str, "rh%ld", instr_data->arg_reg[datum_value]);
- }
+ sprintf (tmp_str, "rh%ld", instr_data->arg_reg[datum_value]);
strcat (out_str, tmp_str);
break;
case CLASS_REG_WORD:
sprintf (tmp_str, "rr%ld", instr_data->arg_reg[datum_value]);
strcat (out_str, tmp_str);
break;
+ case CLASS_PR:
+ if (is_segmented)
+ sprintf (tmp_str, "rr%ld", instr_data->arg_reg[datum_value]);
+ else
+ sprintf (tmp_str, "r%ld", instr_data->arg_reg[datum_value]);
+ strcat (out_str, tmp_str);
+ break;
default:
+ abort ();
break;
}
}
projects / deliverable / binutils-gdb.git / blobdiff