X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=opcodes%2Fz8k-dis.c;h=cb871decfaba7033f601b5b347171db068940135;hb=030a2e78acf66c5c12e073ec3887a167da7a7195;hp=7123622a291cb49d5ec09a7a1d74e75ba2e2bb29;hpb=dc9e099fc0eced486ae2b49455c9da113c11f4ff;p=deliverable%2Fbinutils-gdb.git diff --git a/opcodes/z8k-dis.c b/opcodes/z8k-dis.c index 7123622a29..cb871decfa 100644 --- a/opcodes/z8k-dis.c +++ b/opcodes/z8k-dis.c @@ -1,33 +1,32 @@ /* 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 #include "sysdep.h" -#include "dis-asm.h" +#include "disassemble.h" +#include "libiberty.h" #define DEFINE_TABLE #include "z8k-opc.h" - #include - typedef struct { /* These are all indexed by nibble number (i.e only every other entry @@ -37,11 +36,11 @@ typedef struct 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; @@ -58,17 +57,15 @@ instr_data_s; 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 (); @@ -80,20 +77,20 @@ fetch_data (info, nibble) 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; @@ -108,53 +105,66 @@ fetch_data (info, nibble) } 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] = + { + "", + "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 { @@ -166,42 +176,48 @@ print_insn_z8k (addr, info, is_segmented) } 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]; @@ -214,6 +230,8 @@ z8k_lookup_instr (nibbles, info) if (datum_value != instr_nibl) nibl_matched = 0; break; + case CLASS_IGNORE: + break; case CLASS_00II: if (!((~instr_nibl) & 0x4)) nibl_matched = 0; @@ -252,41 +270,27 @@ z8k_lookup_instr (nibbles, info) 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); @@ -294,24 +298,24 @@ output_instr (instr_data, addr, info) } 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; @@ -319,24 +323,23 @@ unpack_instr (instr_data, is_segmented, info) 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: @@ -349,8 +352,11 @@ unpack_instr (instr_data, is_segmented, info) 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: @@ -390,10 +396,6 @@ unpack_instr (instr_data, is_segmented, info) 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) { @@ -402,14 +404,15 @@ unpack_instr (instr_data, is_segmented, info) 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; } } @@ -420,17 +423,17 @@ unpack_instr (instr_data, is_segmented, info) } 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: @@ -439,11 +442,9 @@ unpack_instr (instr_data, is_segmented, info) 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; @@ -451,22 +452,20 @@ unpack_instr (instr_data, is_segmented, info) 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; } @@ -476,14 +475,62 @@ unpack_instr (instr_data, is_segmented, info) } 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++) @@ -498,25 +545,39 @@ unparse_instr (instr_data) 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; @@ -525,32 +586,35 @@ unparse_instr (instr_data) 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: @@ -565,7 +629,15 @@ unparse_instr (instr_data) 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; } }