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915 lines
22 KiB
C
915 lines
22 KiB
C
/* Disassemble i80960 instructions.
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Copyright (C) 1990, 1991 Free Software Foundation, Inc.
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This program 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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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "dis-asm.h"
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static const char *const reg_names[] = {
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/* 0 */ "pfp", "sp", "rip", "r3", "r4", "r5", "r6", "r7",
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/* 8 */ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
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/* 16 */ "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7",
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/* 24 */ "g8", "g9", "g10", "g11", "g12", "g13", "g14", "fp",
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/* 32 */ "pc", "ac", "ip", "tc", "fp0", "fp1", "fp2", "fp3"
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};
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static FILE *stream; /* Output goes here */
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static struct disassemble_info *info;
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static void print_addr();
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static void ctrl();
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static void cobr();
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static void reg();
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static int mem();
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static void ea();
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static void dstop();
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static void regop();
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static void invalid();
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static int pinsn();
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static void put_abs();
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/* Print the i960 instruction at address 'memaddr' in debugged memory,
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on INFO->STREAM. Returns length of the instruction, in bytes. */
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int
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print_insn_i960 (memaddr, info_arg)
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bfd_vma memaddr;
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struct disassemble_info *info_arg;
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{
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unsigned int word1, word2 = 0xdeadbeef;
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bfd_byte buffer[8];
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int status;
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info = info_arg;
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stream = info->stream;
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/* Read word1. Only read word2 if the instruction
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needs it, to prevent reading past the end of a section. */
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status = (*info->read_memory_func) (memaddr, (bfd_byte *) buffer, 4, info);
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if (status != 0)
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{
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(*info->memory_error_func) (status, memaddr, info);
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return -1;
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}
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word1 = bfd_getl32 (buffer);
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/* Divide instruction set into classes based on high 4 bits of opcode. */
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switch ( (word1 >> 28) & 0xf )
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{
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default:
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break;
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case 0x8:
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case 0x9:
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case 0xa:
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case 0xb:
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case 0xc:
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/* Read word2. */
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status = (*info->read_memory_func)
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(memaddr + 4, (bfd_byte *) (buffer + 4), 4, info);
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if (status != 0)
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{
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(*info->memory_error_func) (status, memaddr, info);
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return -1;
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}
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word2 = bfd_getl32 (buffer + 4);
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break;
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}
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return pinsn( memaddr, word1, word2 );
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}
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#define IN_GDB
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/*****************************************************************************
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* All code below this point should be identical with that of
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* the disassembler in gdmp960.
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A noble sentiment, but at least in cosmetic ways (info->fprintf_func), it
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just ain't so. -kingdon, 31 Mar 93
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*****************************************************************************/
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struct tabent {
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char *name;
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signed char numops;
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};
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struct sparse_tabent {
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int opcode;
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char *name;
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signed char numops;
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};
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static int
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pinsn( memaddr, word1, word2 )
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unsigned long memaddr;
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unsigned long word1, word2;
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{
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int instr_len;
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instr_len = 4;
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put_abs( word1, word2 );
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/* Divide instruction set into classes based on high 4 bits of opcode*/
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switch ( (word1 >> 28) & 0xf ){
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case 0x0:
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case 0x1:
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ctrl( memaddr, word1, word2 );
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break;
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case 0x2:
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case 0x3:
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cobr( memaddr, word1, word2 );
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break;
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case 0x5:
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case 0x6:
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case 0x7:
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reg( word1 );
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break;
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case 0x8:
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case 0x9:
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case 0xa:
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case 0xb:
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case 0xc:
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instr_len = mem( memaddr, word1, word2, 0 );
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break;
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default:
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/* invalid instruction, print as data word */
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invalid( word1 );
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break;
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}
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return instr_len;
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}
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/****************************************/
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/* CTRL format */
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/****************************************/
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static void
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ctrl( memaddr, word1, word2 )
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unsigned long memaddr;
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unsigned long word1, word2;
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{
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int i;
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static const struct tabent ctrl_tab[] = {
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NULL, 0, /* 0x00 */
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NULL, 0, /* 0x01 */
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NULL, 0, /* 0x02 */
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NULL, 0, /* 0x03 */
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NULL, 0, /* 0x04 */
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NULL, 0, /* 0x05 */
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NULL, 0, /* 0x06 */
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NULL, 0, /* 0x07 */
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"b", 1, /* 0x08 */
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"call", 1, /* 0x09 */
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"ret", 0, /* 0x0a */
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"bal", 1, /* 0x0b */
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NULL, 0, /* 0x0c */
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NULL, 0, /* 0x0d */
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NULL, 0, /* 0x0e */
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NULL, 0, /* 0x0f */
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"bno", 1, /* 0x10 */
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"bg", 1, /* 0x11 */
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"be", 1, /* 0x12 */
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"bge", 1, /* 0x13 */
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"bl", 1, /* 0x14 */
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"bne", 1, /* 0x15 */
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"ble", 1, /* 0x16 */
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"bo", 1, /* 0x17 */
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"faultno", 0, /* 0x18 */
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"faultg", 0, /* 0x19 */
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"faulte", 0, /* 0x1a */
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"faultge", 0, /* 0x1b */
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"faultl", 0, /* 0x1c */
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"faultne", 0, /* 0x1d */
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"faultle", 0, /* 0x1e */
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"faulto", 0, /* 0x1f */
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};
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i = (word1 >> 24) & 0xff;
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if ( (ctrl_tab[i].name == NULL) || ((word1 & 1) != 0) ){
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invalid( word1 );
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return;
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}
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(*info->fprintf_func) ( stream, ctrl_tab[i].name );
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if ( word1 & 2 ){ /* Predicts branch not taken */
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(*info->fprintf_func) ( stream, ".f" );
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}
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if ( ctrl_tab[i].numops == 1 ){
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/* EXTRACT DISPLACEMENT AND CONVERT TO ADDRESS */
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word1 &= 0x00ffffff;
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if ( word1 & 0x00800000 ){ /* Sign bit is set */
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word1 |= (-1 & ~0xffffff); /* Sign extend */
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}
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(*info->fprintf_func)( stream, "\t" );
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print_addr( word1 + memaddr );
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}
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}
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/****************************************/
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/* COBR format */
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/****************************************/
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static void
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cobr( memaddr, word1, word2 )
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unsigned long memaddr;
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unsigned long word1, word2;
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{
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int src1;
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int src2;
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int i;
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static const struct tabent cobr_tab[] = {
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"testno", 1, /* 0x20 */
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"testg", 1, /* 0x21 */
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"teste", 1, /* 0x22 */
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"testge", 1, /* 0x23 */
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"testl", 1, /* 0x24 */
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"testne", 1, /* 0x25 */
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"testle", 1, /* 0x26 */
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"testo", 1, /* 0x27 */
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NULL, 0, /* 0x28 */
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NULL, 0, /* 0x29 */
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NULL, 0, /* 0x2a */
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NULL, 0, /* 0x2b */
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NULL, 0, /* 0x2c */
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NULL, 0, /* 0x2d */
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NULL, 0, /* 0x2e */
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NULL, 0, /* 0x2f */
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"bbc", 3, /* 0x30 */
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"cmpobg", 3, /* 0x31 */
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"cmpobe", 3, /* 0x32 */
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"cmpobge", 3, /* 0x33 */
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"cmpobl", 3, /* 0x34 */
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"cmpobne", 3, /* 0x35 */
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"cmpoble", 3, /* 0x36 */
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"bbs", 3, /* 0x37 */
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"cmpibno", 3, /* 0x38 */
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"cmpibg", 3, /* 0x39 */
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"cmpibe", 3, /* 0x3a */
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"cmpibge", 3, /* 0x3b */
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"cmpibl", 3, /* 0x3c */
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"cmpibne", 3, /* 0x3d */
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"cmpible", 3, /* 0x3e */
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"cmpibo", 3, /* 0x3f */
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};
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i = ((word1 >> 24) & 0xff) - 0x20;
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if ( cobr_tab[i].name == NULL ){
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invalid( word1 );
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return;
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}
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(*info->fprintf_func) ( stream, cobr_tab[i].name );
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if ( word1 & 2 ){ /* Predicts branch not taken */
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(*info->fprintf_func) ( stream, ".f" );
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}
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(*info->fprintf_func)( stream, "\t" );
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src1 = (word1 >> 19) & 0x1f;
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src2 = (word1 >> 14) & 0x1f;
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if ( word1 & 0x02000 ){ /* M1 is 1 */
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(*info->fprintf_func)( stream, "%d", src1 );
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} else { /* M1 is 0 */
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(*info->fprintf_func)( stream, reg_names[src1] );
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}
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if ( cobr_tab[i].numops > 1 ){
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if ( word1 & 1 ){ /* S2 is 1 */
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(*info->fprintf_func)( stream, ",sf%d,", src2 );
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} else { /* S1 is 0 */
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(*info->fprintf_func)( stream, ",%s,", reg_names[src2] );
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}
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/* Extract displacement and convert to address
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*/
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word1 &= 0x00001ffc;
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if ( word1 & 0x00001000 ){ /* Negative displacement */
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word1 |= (-1 & ~0x1fff); /* Sign extend */
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}
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print_addr( memaddr + word1 );
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}
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}
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/****************************************/
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/* MEM format */
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/****************************************/
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static int /* returns instruction length: 4 or 8 */
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mem( memaddr, word1, word2, noprint )
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unsigned long memaddr;
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unsigned long word1, word2;
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int noprint; /* If TRUE, return instruction length, but
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* don't output any text.
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*/
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{
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int i, j;
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int len;
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int mode;
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int offset;
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const char *reg1, *reg2, *reg3;
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/* This lookup table is too sparse to make it worth typing in, but not
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so large as to make a sparse array necessary. We create the table
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at runtime. */
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/*
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* NOTE: In this table, the meaning of 'numops' is:
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* 1: single operand
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* 2: 2 operands, load instruction
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* -2: 2 operands, store instruction
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*/
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static struct tabent *mem_tab;
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/* Opcodes of 0x8X, 9X, aX, bX, and cX must be in the table. */
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#define MEM_MIN 0x80
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#define MEM_MAX 0xcf
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#define MEM_SIZ ( * sizeof(struct tabent))
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static const struct sparse_tabent mem_init[] = {
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0x80, "ldob", 2,
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0x82, "stob", -2,
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0x84, "bx", 1,
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0x85, "balx", 2,
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0x86, "callx", 1,
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0x88, "ldos", 2,
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0x8a, "stos", -2,
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0x8c, "lda", 2,
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0x90, "ld", 2,
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0x92, "st", -2,
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0x98, "ldl", 2,
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0x9a, "stl", -2,
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0xa0, "ldt", 2,
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0xa2, "stt", -2,
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0xb0, "ldq", 2,
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0xb2, "stq", -2,
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0xc0, "ldib", 2,
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0xc2, "stib", -2,
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0xc8, "ldis", 2,
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0xca, "stis", -2,
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0, NULL, 0
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};
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static struct tabent mem_tab_buf[MEM_MAX - MEM_MIN + 1];
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if ( mem_tab == NULL ){
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mem_tab = mem_tab_buf;
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for ( i = 0; mem_init[i].opcode != 0; i++ ){
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j = mem_init[i].opcode - MEM_MIN;
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mem_tab[j].name = mem_init[i].name;
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mem_tab[j].numops = mem_init[i].numops;
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}
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}
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i = ((word1 >> 24) & 0xff) - MEM_MIN;
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mode = (word1 >> 10) & 0xf;
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if ( (mem_tab[i].name != NULL) /* Valid instruction */
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&& ((mode == 5) || (mode >=12)) ){ /* With 32-bit displacement */
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len = 8;
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} else {
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len = 4;
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}
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if ( noprint ){
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return len;
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}
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if ( (mem_tab[i].name == NULL) || (mode == 6) ){
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invalid( word1 );
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return len;
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}
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(*info->fprintf_func)( stream, "%s\t", mem_tab[i].name );
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reg1 = reg_names[ (word1 >> 19) & 0x1f ]; /* MEMB only */
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reg2 = reg_names[ (word1 >> 14) & 0x1f ];
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reg3 = reg_names[ word1 & 0x1f ]; /* MEMB only */
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offset = word1 & 0xfff; /* MEMA only */
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switch ( mem_tab[i].numops ){
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case 2: /* LOAD INSTRUCTION */
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if ( mode & 4 ){ /* MEMB FORMAT */
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ea( memaddr, mode, reg2, reg3, word1, word2 );
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(*info->fprintf_func)( stream, ",%s", reg1 );
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} else { /* MEMA FORMAT */
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(*info->fprintf_func)( stream, "0x%x", (unsigned) offset );
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if (mode & 8) {
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(*info->fprintf_func)( stream, "(%s)", reg2 );
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}
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(*info->fprintf_func)( stream, ",%s", reg1 );
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}
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break;
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case -2: /* STORE INSTRUCTION */
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if ( mode & 4 ){ /* MEMB FORMAT */
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(*info->fprintf_func)( stream, "%s,", reg1 );
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ea( memaddr, mode, reg2, reg3, word1, word2 );
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} else { /* MEMA FORMAT */
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(*info->fprintf_func)( stream, "%s,0x%x", reg1, (unsigned) offset );
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if (mode & 8) {
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(*info->fprintf_func)( stream, "(%s)", reg2 );
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}
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}
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break;
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case 1: /* BX/CALLX INSTRUCTION */
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if ( mode & 4 ){ /* MEMB FORMAT */
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ea( memaddr, mode, reg2, reg3, word1, word2 );
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} else { /* MEMA FORMAT */
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(*info->fprintf_func)( stream, "0x%x", (unsigned) offset );
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if (mode & 8) {
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(*info->fprintf_func)( stream, "(%s)", reg2 );
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}
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}
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break;
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}
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return len;
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}
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/****************************************/
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/* REG format */
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/****************************************/
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static void
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reg( word1 )
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unsigned long word1;
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{
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int i, j;
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int opcode;
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int fp;
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int m1, m2, m3;
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int s1, s2;
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int src, src2, dst;
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char *mnemp;
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/* This lookup table is too sparse to make it worth typing in, but not
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so large as to make a sparse array necessary. We create the table
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at runtime. */
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/*
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* NOTE: In this table, the meaning of 'numops' is:
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* 1: single operand, which is NOT a destination.
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* -1: single operand, which IS a destination.
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* 2: 2 operands, the 2nd of which is NOT a destination.
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* -2: 2 operands, the 2nd of which IS a destination.
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* 3: 3 operands
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*
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* If an opcode mnemonic begins with "F", it is a floating-point
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* opcode (the "F" is not printed).
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*/
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static struct tabent *reg_tab;
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static const struct sparse_tabent reg_init[] = {
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#define REG_MIN 0x580
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0x580, "notbit", 3,
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0x581, "and", 3,
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0x582, "andnot", 3,
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0x583, "setbit", 3,
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0x584, "notand", 3,
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0x586, "xor", 3,
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0x587, "or", 3,
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0x588, "nor", 3,
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0x589, "xnor", 3,
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0x58a, "not", -2,
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0x58b, "ornot", 3,
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0x58c, "clrbit", 3,
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0x58d, "notor", 3,
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0x58e, "nand", 3,
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0x58f, "alterbit", 3,
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0x590, "addo", 3,
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0x591, "addi", 3,
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0x592, "subo", 3,
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0x593, "subi", 3,
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0x594, "cmpob", 2, /* xl */
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0x595, "cmpib", 2, /* xl */
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0x596, "cmpos", 2, /* xl */
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0x597, "cmpis", 2, /* xl */
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0x598, "shro", 3,
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0x59a, "shrdi", 3,
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0x59b, "shri", 3,
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0x59c, "shlo", 3,
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0x59d, "rotate", 3,
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0x59e, "shli", 3,
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0x5a0, "cmpo", 2,
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0x5a1, "cmpi", 2,
|
||
0x5a2, "concmpo", 2,
|
||
0x5a3, "concmpi", 2,
|
||
0x5a4, "cmpinco", 3,
|
||
0x5a5, "cmpinci", 3,
|
||
0x5a6, "cmpdeco", 3,
|
||
0x5a7, "cmpdeci", 3,
|
||
0x5ac, "scanbyte", 2,
|
||
0x5ad, "bswap", -2, /* xl */
|
||
0x5ae, "chkbit", 2,
|
||
0x5b0, "addc", 3,
|
||
0x5b2, "subc", 3,
|
||
0x5b4, "intdis", 0, /* xl */
|
||
0x5b5, "inten", 0, /* xl */
|
||
0x5cc, "mov", -2,
|
||
0x5d8, "eshro", 3,
|
||
0x5dc, "movl", -2,
|
||
0x5ec, "movt", -2,
|
||
0x5fc, "movq", -2,
|
||
0x600, "synmov", 2,
|
||
0x601, "synmovl", 2,
|
||
0x602, "synmovq", 2,
|
||
0x603, "cmpstr", 3,
|
||
0x604, "movqstr", 3,
|
||
0x605, "movstr", 3,
|
||
0x610, "atmod", 3,
|
||
0x612, "atadd", 3,
|
||
0x613, "inspacc", -2,
|
||
0x614, "ldphy", -2,
|
||
0x615, "synld", -2,
|
||
0x617, "fill", 3,
|
||
0x630, "sdma", 3,
|
||
0x631, "udma", 0,
|
||
0x640, "spanbit", -2,
|
||
0x641, "scanbit", -2,
|
||
0x642, "daddc", 3,
|
||
0x643, "dsubc", 3,
|
||
0x644, "dmovt", -2,
|
||
0x645, "modac", 3,
|
||
0x646, "condrec", -2,
|
||
0x650, "modify", 3,
|
||
0x651, "extract", 3,
|
||
0x654, "modtc", 3,
|
||
0x655, "modpc", 3,
|
||
0x656, "receive", -2,
|
||
0x658, "intctl", -2, /* xl */
|
||
0x659, "sysctl", 3,
|
||
0x65b, "icctl", 3, /* xl */
|
||
0x65c, "dcctl", 3, /* xl */
|
||
0x65d, "halt", 0, /* xl */
|
||
0x660, "calls", 1,
|
||
0x662, "send", 3,
|
||
0x663, "sendserv", 1,
|
||
0x664, "resumprcs", 1,
|
||
0x665, "schedprcs", 1,
|
||
0x666, "saveprcs", 0,
|
||
0x668, "condwait", 1,
|
||
0x669, "wait", 1,
|
||
0x66a, "signal", 1,
|
||
0x66b, "mark", 0,
|
||
0x66c, "fmark", 0,
|
||
0x66d, "flushreg", 0,
|
||
0x66f, "syncf", 0,
|
||
0x670, "emul", 3,
|
||
0x671, "ediv", 3,
|
||
0x673, "ldtime", -1,
|
||
0x674, "Fcvtir", -2,
|
||
0x675, "Fcvtilr", -2,
|
||
0x676, "Fscalerl", 3,
|
||
0x677, "Fscaler", 3,
|
||
0x680, "Fatanr", 3,
|
||
0x681, "Flogepr", 3,
|
||
0x682, "Flogr", 3,
|
||
0x683, "Fremr", 3,
|
||
0x684, "Fcmpor", 2,
|
||
0x685, "Fcmpr", 2,
|
||
0x688, "Fsqrtr", -2,
|
||
0x689, "Fexpr", -2,
|
||
0x68a, "Flogbnr", -2,
|
||
0x68b, "Froundr", -2,
|
||
0x68c, "Fsinr", -2,
|
||
0x68d, "Fcosr", -2,
|
||
0x68e, "Ftanr", -2,
|
||
0x68f, "Fclassr", 1,
|
||
0x690, "Fatanrl", 3,
|
||
0x691, "Flogeprl", 3,
|
||
0x692, "Flogrl", 3,
|
||
0x693, "Fremrl", 3,
|
||
0x694, "Fcmporl", 2,
|
||
0x695, "Fcmprl", 2,
|
||
0x698, "Fsqrtrl", -2,
|
||
0x699, "Fexprl", -2,
|
||
0x69a, "Flogbnrl", -2,
|
||
0x69b, "Froundrl", -2,
|
||
0x69c, "Fsinrl", -2,
|
||
0x69d, "Fcosrl", -2,
|
||
0x69e, "Ftanrl", -2,
|
||
0x69f, "Fclassrl", 1,
|
||
0x6c0, "Fcvtri", -2,
|
||
0x6c1, "Fcvtril", -2,
|
||
0x6c2, "Fcvtzri", -2,
|
||
0x6c3, "Fcvtzril", -2,
|
||
0x6c9, "Fmovr", -2,
|
||
0x6d9, "Fmovrl", -2,
|
||
0x6e1, "Fmovre", -2,
|
||
0x6e2, "Fcpysre", 3,
|
||
0x6e3, "Fcpyrsre", 3,
|
||
0x701, "mulo", 3,
|
||
0x708, "remo", 3,
|
||
0x70b, "divo", 3,
|
||
0x741, "muli", 3,
|
||
0x748, "remi", 3,
|
||
0x749, "modi", 3,
|
||
0x74b, "divi", 3,
|
||
0x780, "addono", 3, /* xl */
|
||
0x781, "addino", 3, /* xl */
|
||
0x782, "subono", 3, /* xl */
|
||
0x783, "subino", 3, /* xl */
|
||
0x784, "selno", 3, /* xl */
|
||
0x78b, "Fdivr", 3,
|
||
0x78c, "Fmulr", 3,
|
||
0x78d, "Fsubr", 3,
|
||
0x78f, "Faddr", 3,
|
||
0x790, "addog", 3, /* xl */
|
||
0x791, "addig", 3, /* xl */
|
||
0x792, "subog", 3, /* xl */
|
||
0x793, "subig", 3, /* xl */
|
||
0x794, "selg", 3, /* xl */
|
||
0x79b, "Fdivrl", 3,
|
||
0x79c, "Fmulrl", 3,
|
||
0x79d, "Fsubrl", 3,
|
||
0x79f, "Faddrl", 3,
|
||
#define REG_MAX 0x79f
|
||
0x7a0, "addoe", 3, /* xl */
|
||
0x7a1, "addie", 3, /* xl */
|
||
0x7a2, "suboe", 3, /* xl */
|
||
0x7a3, "subie", 3, /* xl */
|
||
0x7a4, "sele", 3, /* xl */
|
||
0x7b0, "addoge", 3, /* xl */
|
||
0x7b1, "addige", 3, /* xl */
|
||
0x7b2, "suboge", 3, /* xl */
|
||
0x7b3, "subige", 3, /* xl */
|
||
0x7b4, "selge", 3, /* xl */
|
||
0x7c0, "addol", 3, /* xl */
|
||
0x7c1, "addil", 3, /* xl */
|
||
0x7c2, "subol", 3, /* xl */
|
||
0x7c3, "subil", 3, /* xl */
|
||
0x7c4, "sell", 3, /* xl */
|
||
0x7d0, "addone", 3, /* xl */
|
||
0x7d1, "addine", 3, /* xl */
|
||
0x7d2, "subone", 3, /* xl */
|
||
0x7d3, "subine", 3, /* xl */
|
||
0x7d4, "selne", 3, /* xl */
|
||
0x7e0, "addole", 3, /* xl */
|
||
0x7e1, "addile", 3, /* xl */
|
||
0x7e2, "subole", 3, /* xl */
|
||
0x7e3, "subile", 3, /* xl */
|
||
0x7e4, "selle", 3, /* xl */
|
||
0x7f0, "addoo", 3, /* xl */
|
||
0x7f1, "addio", 3, /* xl */
|
||
0x7f2, "suboo", 3, /* xl */
|
||
0x7f3, "subio", 3, /* xl */
|
||
0x7f4, "selo", 3, /* xl */
|
||
#undef REG_MAX /* xl */
|
||
#define REG_MAX 0x7f4 /* xl */
|
||
0, NULL, 0
|
||
};
|
||
static struct tabent reg_tab_buf[REG_MAX - REG_MIN + 1];
|
||
|
||
if ( reg_tab == NULL ){
|
||
reg_tab = reg_tab_buf;
|
||
for ( i = 0; reg_init[i].opcode != 0; i++ ){
|
||
j = reg_init[i].opcode - REG_MIN;
|
||
reg_tab[j].name = reg_init[i].name;
|
||
reg_tab[j].numops = reg_init[i].numops;
|
||
}
|
||
}
|
||
|
||
opcode = ((word1 >> 20) & 0xff0) | ((word1 >> 7) & 0xf);
|
||
i = opcode - REG_MIN;
|
||
|
||
if ( (opcode<REG_MIN) || (opcode>REG_MAX) || (reg_tab[i].name==NULL) ){
|
||
invalid( word1 );
|
||
return;
|
||
}
|
||
|
||
mnemp = reg_tab[i].name;
|
||
if ( *mnemp == 'F' ){
|
||
fp = 1;
|
||
mnemp++;
|
||
} else {
|
||
fp = 0;
|
||
}
|
||
|
||
(*info->fprintf_func)( stream, mnemp );
|
||
|
||
s1 = (word1 >> 5) & 1;
|
||
s2 = (word1 >> 6) & 1;
|
||
m1 = (word1 >> 11) & 1;
|
||
m2 = (word1 >> 12) & 1;
|
||
m3 = (word1 >> 13) & 1;
|
||
src = word1 & 0x1f;
|
||
src2 = (word1 >> 14) & 0x1f;
|
||
dst = (word1 >> 19) & 0x1f;
|
||
|
||
if ( reg_tab[i].numops != 0 ){
|
||
(*info->fprintf_func)( stream, "\t" );
|
||
|
||
switch ( reg_tab[i].numops ){
|
||
case 1:
|
||
regop( m1, s1, src, fp );
|
||
break;
|
||
case -1:
|
||
dstop( m3, dst, fp );
|
||
break;
|
||
case 2:
|
||
regop( m1, s1, src, fp );
|
||
(*info->fprintf_func)( stream, "," );
|
||
regop( m2, s2, src2, fp );
|
||
break;
|
||
case -2:
|
||
regop( m1, s1, src, fp );
|
||
(*info->fprintf_func)( stream, "," );
|
||
dstop( m3, dst, fp );
|
||
break;
|
||
case 3:
|
||
regop( m1, s1, src, fp );
|
||
(*info->fprintf_func)( stream, "," );
|
||
regop( m2, s2, src2, fp );
|
||
(*info->fprintf_func)( stream, "," );
|
||
dstop( m3, dst, fp );
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
/*
|
||
* Print out effective address for memb instructions.
|
||
*/
|
||
static void
|
||
ea( memaddr, mode, reg2, reg3, word1, word2 )
|
||
unsigned long memaddr;
|
||
int mode;
|
||
char *reg2, *reg3;
|
||
int word1;
|
||
unsigned int word2;
|
||
{
|
||
int scale;
|
||
static const int scale_tab[] = { 1, 2, 4, 8, 16 };
|
||
|
||
scale = (word1 >> 7) & 0x07;
|
||
if ( (scale > 4) || ((word1 >> 5) & 0x03 != 0) ){
|
||
invalid( word1 );
|
||
return;
|
||
}
|
||
scale = scale_tab[scale];
|
||
|
||
switch (mode) {
|
||
case 4: /* (reg) */
|
||
(*info->fprintf_func)( stream, "(%s)", reg2 );
|
||
break;
|
||
case 5: /* displ+8(ip) */
|
||
print_addr( word2+8+memaddr );
|
||
break;
|
||
case 7: /* (reg)[index*scale] */
|
||
if (scale == 1) {
|
||
(*info->fprintf_func)( stream, "(%s)[%s]", reg2, reg3 );
|
||
} else {
|
||
(*info->fprintf_func)( stream, "(%s)[%s*%d]",reg2,reg3,scale);
|
||
}
|
||
break;
|
||
case 12: /* displacement */
|
||
print_addr( word2 );
|
||
break;
|
||
case 13: /* displ(reg) */
|
||
print_addr( word2 );
|
||
(*info->fprintf_func)( stream, "(%s)", reg2 );
|
||
break;
|
||
case 14: /* displ[index*scale] */
|
||
print_addr( word2 );
|
||
if (scale == 1) {
|
||
(*info->fprintf_func)( stream, "[%s]", reg3 );
|
||
} else {
|
||
(*info->fprintf_func)( stream, "[%s*%d]", reg3, scale );
|
||
}
|
||
break;
|
||
case 15: /* displ(reg)[index*scale] */
|
||
print_addr( word2 );
|
||
if (scale == 1) {
|
||
(*info->fprintf_func)( stream, "(%s)[%s]", reg2, reg3 );
|
||
} else {
|
||
(*info->fprintf_func)( stream, "(%s)[%s*%d]",reg2,reg3,scale );
|
||
}
|
||
break;
|
||
default:
|
||
invalid( word1 );
|
||
return;
|
||
}
|
||
}
|
||
|
||
|
||
/************************************************/
|
||
/* Register Instruction Operand */
|
||
/************************************************/
|
||
static void
|
||
regop( mode, spec, reg, fp )
|
||
int mode, spec, reg, fp;
|
||
{
|
||
if ( fp ){ /* FLOATING POINT INSTRUCTION */
|
||
if ( mode == 1 ){ /* FP operand */
|
||
switch ( reg ){
|
||
case 0: (*info->fprintf_func)( stream, "fp0" );
|
||
break;
|
||
case 1: (*info->fprintf_func)( stream, "fp1" );
|
||
break;
|
||
case 2: (*info->fprintf_func)( stream, "fp2" );
|
||
break;
|
||
case 3: (*info->fprintf_func)( stream, "fp3" );
|
||
break;
|
||
case 16: (*info->fprintf_func)( stream, "0f0.0" );
|
||
break;
|
||
case 22: (*info->fprintf_func)( stream, "0f1.0" );
|
||
break;
|
||
default: (*info->fprintf_func)( stream, "?" );
|
||
break;
|
||
}
|
||
} else { /* Non-FP register */
|
||
(*info->fprintf_func)( stream, reg_names[reg] );
|
||
}
|
||
} else { /* NOT FLOATING POINT */
|
||
if ( mode == 1 ){ /* Literal */
|
||
(*info->fprintf_func)( stream, "%d", reg );
|
||
} else { /* Register */
|
||
if ( spec == 0 ){
|
||
(*info->fprintf_func)( stream, reg_names[reg] );
|
||
} else {
|
||
(*info->fprintf_func)( stream, "sf%d", reg );
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/************************************************/
|
||
/* Register Instruction Destination Operand */
|
||
/************************************************/
|
||
static void
|
||
dstop( mode, reg, fp )
|
||
int mode, reg, fp;
|
||
{
|
||
/* 'dst' operand can't be a literal. On non-FP instructions, register
|
||
* mode is assumed and "m3" acts as if were "s3"; on FP-instructions,
|
||
* sf registers are not allowed so m3 acts normally.
|
||
*/
|
||
if ( fp ){
|
||
regop( mode, 0, reg, fp );
|
||
} else {
|
||
regop( 0, mode, reg, fp );
|
||
}
|
||
}
|
||
|
||
|
||
static void
|
||
invalid( word1 )
|
||
int word1;
|
||
{
|
||
(*info->fprintf_func)( stream, ".word\t0x%08x", (unsigned) word1 );
|
||
}
|
||
|
||
static void
|
||
print_addr(a)
|
||
int a;
|
||
{
|
||
(*info->print_address_func) ((bfd_vma) a, info);
|
||
}
|
||
|
||
static void
|
||
put_abs( word1, word2 )
|
||
unsigned long word1, word2;
|
||
{
|
||
#ifdef IN_GDB
|
||
return;
|
||
#else
|
||
int len;
|
||
|
||
switch ( (word1 >> 28) & 0xf ){
|
||
case 0x8:
|
||
case 0x9:
|
||
case 0xa:
|
||
case 0xb:
|
||
case 0xc:
|
||
/* MEM format instruction */
|
||
len = mem( 0, word1, word2, 1 );
|
||
break;
|
||
default:
|
||
len = 4;
|
||
break;
|
||
}
|
||
|
||
if ( len == 8 ){
|
||
(*info->fprintf_func)( stream, "%08x %08x\t", word1, word2 );
|
||
} else {
|
||
(*info->fprintf_func)( stream, "%08x \t", word1 );
|
||
}
|
||
;
|
||
|
||
#endif
|
||
}
|