diff options
Diffstat (limited to 'opcodes/z8k-dis.c')
| -rw-r--r-- | opcodes/z8k-dis.c | 582 |
1 files changed, 0 insertions, 582 deletions
diff --git a/opcodes/z8k-dis.c b/opcodes/z8k-dis.c deleted file mode 100644 index 99e25789f48..00000000000 --- a/opcodes/z8k-dis.c +++ /dev/null @@ -1,582 +0,0 @@ -/* Disassemble z8000 code. - Copyright 1992, 1993, 1998, 2000 - Free Software Foundation, Inc. - -This file is part of GNU Binutils. - -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 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. - -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. */ - -#include "sysdep.h" -#include "dis-asm.h" - -#define DEFINE_TABLE -#include "z8k-opc.h" - -#include <setjmp.h> - -typedef struct -{ - /* These are all indexed by nibble number (i.e only every other entry - of bytes is used, and every 4th entry of words). */ - unsigned char nibbles[24]; - unsigned char bytes[24]; - unsigned short words[24]; - - /* Nibble number of first word not yet fetched. */ - int max_fetched; - bfd_vma insn_start; - jmp_buf bailout; - - long tabl_index; - char instr_asmsrc[80]; - unsigned long arg_reg[0x0f]; - unsigned long immediate; - unsigned long displacement; - unsigned long address; - unsigned long cond_code; - unsigned long ctrl_code; - unsigned long flags; - unsigned long interrupts; -} -instr_data_s; - -/* Make sure that bytes from INFO->PRIVATE_DATA->BUFFER (inclusive) - 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 \ - ? 1 : fetch_data ((info), (nibble))) - -static int -fetch_data (info, nibble) - struct disassemble_info *info; - int nibble; -{ - unsigned char mybuf[20]; - int status; - instr_data_s *priv = (instr_data_s *) info->private_data; - - if ((nibble % 4) != 0) - abort (); - - status = (*info->read_memory_func) (priv->insn_start, - (bfd_byte *) mybuf, - nibble / 2, - info); - if (status != 0) - { - (*info->memory_error_func) (status, priv->insn_start, info); - longjmp (priv->bailout, 1); - } - - { - int i; - 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; - - ++p; - priv->bytes[i] = *p; - priv->nibbles[i++] = *p >> 4; - priv->nibbles[i++] = *p & 0xf; - - ++p; - } - } - priv->max_fetched = nibble; - return 1; -} - -static char *codes[16] = -{ - "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 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 *, int)); - -static int -print_insn_z8k (addr, info, is_segmented) - 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) - /* Error return. */ - return -1; - - instr_data.tabl_index = z8k_lookup_instr (instr_data.nibbles, info); - if (instr_data.tabl_index > 0) - { - unpack_instr (&instr_data, is_segmented, info); - unparse_instr (&instr_data, is_segmented); - output_instr (&instr_data, addr, info); - return z8k_table[instr_data.tabl_index].length + seg_length; - } - else - { - FETCH_DATA (info, 4); - (*info->fprintf_func) (info->stream, ".word %02x%02x", - instr_data.bytes[0], instr_data.bytes[2]); - return 2; - } -} - -int -print_insn_z8001 (addr, info) - 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; -{ - return print_insn_z8k (addr, info, 0); -} - -int -z8k_lookup_instr (nibbles, info) - unsigned char *nibbles; - disassemble_info *info; -{ - - int nibl_index, tabl_index; - int nibl_matched; - unsigned short instr_nibl; - unsigned short tabl_datum, datum_class, datum_value; - - nibl_matched = 0; - tabl_index = 0; - 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++) - { - if ((nibl_index % 4) == 0) - /* Fetch one word at a time. */ - FETCH_DATA (info, nibl_index + 4); - instr_nibl = nibbles[nibl_index]; - - tabl_datum = z8k_table[tabl_index].byte_info[nibl_index]; - datum_class = tabl_datum & CLASS_MASK; - datum_value = ~CLASS_MASK & tabl_datum; - - switch (datum_class) - { - case CLASS_BIT: - if (datum_value != instr_nibl) - nibl_matched = 0; - break; - case CLASS_00II: - if (!((~instr_nibl) & 0x4)) - nibl_matched = 0; - break; - case CLASS_01II: - if (!(instr_nibl & 0x4)) - nibl_matched = 0; - break; - case CLASS_0CCC: - if (!((~instr_nibl) & 0x8)) - nibl_matched = 0; - break; - case CLASS_1CCC: - if (!(instr_nibl & 0x8)) - nibl_matched = 0; - break; - case CLASS_0DISP7: - if (!((~instr_nibl) & 0x8)) - nibl_matched = 0; - nibl_index += 1; - break; - case CLASS_1DISP7: - if (!(instr_nibl & 0x8)) - nibl_matched = 0; - nibl_index += 1; - break; - case CLASS_REGN0: - if (instr_nibl == 0) - nibl_matched = 0; - break; - case CLASS_BIT_1OR2: - if ((instr_nibl | 0x2) != (datum_value | 0x2)) - nibl_matched = 0; - break; - default: - break; - } - } - if (nibl_matched) - { - 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; -{ - int loop, loop_limit; - char tmp_str[20]; - char out_str[100]; - - strcpy (out_str, "\t"); - - loop_limit = (z8k_table[instr_data->tabl_index].length + seg_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, " "); - } - - strcat (out_str, instr_data->instr_asmsrc); - - (*info->fprintf_func) (info->stream, "%s", out_str); -} - -static void -unpack_instr (instr_data, is_segmented, info) - instr_data_s *instr_data; - int is_segmented; - disassemble_info *info; -{ - int nibl_count, loop; - unsigned short instr_nibl, instr_byte, instr_word; - long instr_long; - 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&~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; - datum_value = tabl_datum & ~CLASS_MASK; - - switch (datum_class) - { - case CLASS_DISP: - switch (datum_value) - { - case ARG_DISP16: - instr_data->displacement = instr_data->insn_start + 4 + - (signed short)(instr_word & 0xffff); - nibl_count += 3; - break; - case ARG_DISP12: - if (instr_word & 0x800) { /* neg. 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: - break; - } - break; - case CLASS_IMM: - switch (datum_value) - { - case ARG_IMM4: - instr_data->immediate = instr_nibl; - break; - case ARG_NIM8: - instr_data->immediate = (-instr_byte); - nibl_count += 1; - break; - case ARG_IMM8: - instr_data->immediate = instr_byte; - nibl_count += 1; - break; - case ARG_IMM16: - instr_data->immediate = instr_word; - nibl_count += 3; - break; - case ARG_IMM32: - FETCH_DATA (info, nibl_count + 8); - instr_long = (instr_data->words[nibl_count] << 16) - | (instr_data->words[nibl_count + 4]); - instr_data->immediate = instr_long; - nibl_count += 7; - break; - case ARG_IMMN: - instr_data->immediate = instr_nibl - 1; - break; - case ARG_IMM4M1: - instr_data->immediate = instr_nibl + 1; - break; - case ARG_IMM_1: - instr_data->immediate = 1; - break; - case ARG_IMM_2: - instr_data->immediate = 2; - break; - case ARG_IMM2: - instr_data->immediate = instr_nibl & 0x3; - break; - default: - break; - } - break; - case CLASS_CC: - instr_data->cond_code = instr_nibl; - break; - case CLASS_ADDRESS: - if (is_segmented) - { - if (instr_nibl & 0x8) - { - 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); - nibl_count += 7; - seg_length = 2; - } - else - { - instr_data->address = ((instr_word & 0x7f00) << 8) + - (instr_word & 0x00ff); - nibl_count += 3; - } - } - else - { - instr_data->address = instr_word; - nibl_count += 3; - } - break; - case CLASS_0CCC: - case CLASS_1CCC: - instr_data->ctrl_code = instr_nibl & 0x7; - break; - case CLASS_0DISP7: - instr_data->displacement = instr_data->insn_start + 2 - (instr_byte & 0x7f) * 2; - nibl_count += 1; - break; - case CLASS_1DISP7: - instr_data->displacement = instr_data->insn_start + 2 - (instr_byte & 0x7f) * 2; - nibl_count += 1; - break; - case CLASS_01II: - instr_data->interrupts = instr_nibl & 0x3; - break; - case CLASS_00II: - instr_data->interrupts = instr_nibl & 0x3; - break; - case CLASS_BIT: - instr_data->ctrl_code = instr_nibl & 0x7; - break; - case CLASS_FLAGS: - instr_data->flags = instr_nibl; - break; - case CLASS_REG: - instr_data->arg_reg[datum_value] = instr_nibl; - break; - case CLASS_REGN0: - instr_data->arg_reg[datum_value] = instr_nibl; - break; - case CLASS_DISP8: - instr_data->displacement = instr_data->insn_start + 2 + (signed char)instr_byte * 2; - nibl_count += 1; - break; - default: - abort (); - break; - } - - loop += 1; - nibl_count += 1; - } -} - -static void -unparse_instr (instr_data,is_segmented) - 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); - - loop_limit = z8k_table[instr_data->tabl_index].noperands; - for (loop = 0; loop < loop_limit; loop++) - { - if (loop) - strcat (out_str, ","); - - tabl_datum = z8k_table[instr_data->tabl_index].arg_info[loop]; - datum_class = tabl_datum & CLASS_MASK; - datum_value = tabl_datum & ~CLASS_MASK; - - switch (datum_class) - { - case CLASS_X: - 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); - 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]); - strcat (out_str, tmp_str); - break; - case CLASS_DISP: - sprintf (tmp_str, "0x%0lx", instr_data->displacement); - strcat (out_str, tmp_str); - break; - case CLASS_IMM: - sprintf (tmp_str, "#0x%0lx", instr_data->immediate); - strcat (out_str, tmp_str); - break; - case CLASS_CC: - sprintf (tmp_str, "%s", codes[instr_data->cond_code]); - strcat (out_str, tmp_str); - break; - case CLASS_CTRL: - 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); - strcat (out_str, tmp_str); - break; - case CLASS_IR: - 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); - 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); - } - else - { - sprintf (tmp_str, "rh%ld", instr_data->arg_reg[datum_value]); - } - strcat (out_str, tmp_str); - break; - case CLASS_REG_WORD: - sprintf (tmp_str, "r%ld", instr_data->arg_reg[datum_value]); - strcat (out_str, tmp_str); - break; - case CLASS_REG_QUAD: - sprintf (tmp_str, "rq%ld", instr_data->arg_reg[datum_value]); - strcat (out_str, tmp_str); - break; - case CLASS_REG_LONG: - 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; - } - } - - strcpy (instr_data->instr_asmsrc, out_str); -} |