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old-cross-binutils/opcodes/i960-dis.c

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19990502 sourceware import
1999-05-03 07:29:11 +00:00
/* Disassemble i80960 instructions.
Copyright (C) 1990, 91, 93, 94, 95, 96, 1998 Free Software Foundation, Inc.
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, 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; see the file COPYING. If not, write to the
Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
#include "dis-asm.h"
static const char *const reg_names[] = {
/* 0 */ "pfp", "sp", "rip", "r3", "r4", "r5", "r6", "r7",
/* 8 */ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
/* 16 */ "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7",
/* 24 */ "g8", "g9", "g10", "g11", "g12", "g13", "g14", "fp",
/* 32 */ "pc", "ac", "ip", "tc", "fp0", "fp1", "fp2", "fp3"
};
static FILE *stream; /* Output goes here */
static struct disassemble_info *info;
static void print_addr();
static void ctrl();
static void cobr();
static void reg();
static int mem();
static void ea();
static void dstop();
static void regop();
static void invalid();
static int pinsn();
static void put_abs();
/* Print the i960 instruction at address 'memaddr' in debugged memory,
on INFO->STREAM. Returns length of the instruction, in bytes. */
int
print_insn_i960 (memaddr, info_arg)
bfd_vma memaddr;
struct disassemble_info *info_arg;
{
unsigned int word1, word2 = 0xdeadbeef;
bfd_byte buffer[8];
int status;
info = info_arg;
stream = info->stream;
/* Read word1. Only read word2 if the instruction
needs it, to prevent reading past the end of a section. */
status = (*info->read_memory_func) (memaddr, (bfd_byte *) buffer, 4, info);
if (status != 0)
{
(*info->memory_error_func) (status, memaddr, info);
return -1;
}
word1 = bfd_getl32 (buffer);
/* Divide instruction set into classes based on high 4 bits of opcode. */
switch ( (word1 >> 28) & 0xf )
{
default:
break;
case 0x8:
case 0x9:
case 0xa:
case 0xb:
case 0xc:
/* Read word2. */
status = (*info->read_memory_func)
(memaddr + 4, (bfd_byte *) (buffer + 4), 4, info);
if (status != 0)
{
(*info->memory_error_func) (status, memaddr, info);
return -1;
}
word2 = bfd_getl32 (buffer + 4);
break;
}
return pinsn( memaddr, word1, word2 );
}
#define IN_GDB
/*****************************************************************************
* All code below this point should be identical with that of
* the disassembler in gdmp960.
A noble sentiment, but at least in cosmetic ways (info->fprintf_func), it
just ain't so. -kingdon, 31 Mar 93
*****************************************************************************/
struct tabent {
char *name;
short numops;
};
struct sparse_tabent {
int opcode;
char *name;
short numops;
};
static int
pinsn( memaddr, word1, word2 )
bfd_vma memaddr;
unsigned long word1, word2;
{
int instr_len;
instr_len = 4;
put_abs( word1, word2 );
/* Divide instruction set into classes based on high 4 bits of opcode*/
switch ( (word1 >> 28) & 0xf ){
case 0x0:
case 0x1:
ctrl( memaddr, word1, word2 );
break;
case 0x2:
case 0x3:
cobr( memaddr, word1, word2 );
break;
case 0x5:
case 0x6:
case 0x7:
reg( word1 );
break;
case 0x8:
case 0x9:
case 0xa:
case 0xb:
case 0xc:
instr_len = mem( memaddr, word1, word2, 0 );
break;
default:
/* invalid instruction, print as data word */
invalid( word1 );
break;
}
return instr_len;
}
/****************************************/
/* CTRL format */
/****************************************/
static void
ctrl( memaddr, word1, word2 )
bfd_vma memaddr;
unsigned long word1, word2;
{
int i;
static const struct tabent ctrl_tab[] = {
{ NULL, 0, }, /* 0x00 */
{ NULL, 0, }, /* 0x01 */
{ NULL, 0, }, /* 0x02 */
{ NULL, 0, }, /* 0x03 */
{ NULL, 0, }, /* 0x04 */
{ NULL, 0, }, /* 0x05 */
{ NULL, 0, }, /* 0x06 */
{ NULL, 0, }, /* 0x07 */
{ "b", 1, }, /* 0x08 */
{ "call", 1, }, /* 0x09 */
{ "ret", 0, }, /* 0x0a */
{ "bal", 1, }, /* 0x0b */
{ NULL, 0, }, /* 0x0c */
{ NULL, 0, }, /* 0x0d */
{ NULL, 0, }, /* 0x0e */
{ NULL, 0, }, /* 0x0f */
{ "bno", 1, }, /* 0x10 */
{ "bg", 1, }, /* 0x11 */
{ "be", 1, }, /* 0x12 */
{ "bge", 1, }, /* 0x13 */
{ "bl", 1, }, /* 0x14 */
{ "bne", 1, }, /* 0x15 */
{ "ble", 1, }, /* 0x16 */
{ "bo", 1, }, /* 0x17 */
{ "faultno", 0, }, /* 0x18 */
{ "faultg", 0, }, /* 0x19 */
{ "faulte", 0, }, /* 0x1a */
{ "faultge", 0, }, /* 0x1b */
{ "faultl", 0, }, /* 0x1c */
{ "faultne", 0, }, /* 0x1d */
{ "faultle", 0, }, /* 0x1e */
{ "faulto", 0, }, /* 0x1f */
};
i = (word1 >> 24) & 0xff;
if ( (ctrl_tab[i].name == NULL) || ((word1 & 1) != 0) ){
invalid( word1 );
return;
}
(*info->fprintf_func) ( stream, ctrl_tab[i].name );
if ( word1 & 2 ){ /* Predicts branch not taken */
(*info->fprintf_func) ( stream, ".f" );
}
if ( ctrl_tab[i].numops == 1 ){
/* EXTRACT DISPLACEMENT AND CONVERT TO ADDRESS */
word1 &= 0x00ffffff;
if ( word1 & 0x00800000 ){ /* Sign bit is set */
word1 |= (-1 & ~0xffffff); /* Sign extend */
}
(*info->fprintf_func)( stream, "\t" );
print_addr( word1 + memaddr );
}
}
/****************************************/
/* COBR format */
/****************************************/
static void
cobr( memaddr, word1, word2 )
bfd_vma memaddr;
unsigned long word1, word2;
{
int src1;
int src2;
int i;
static const struct tabent cobr_tab[] = {
{ "testno", 1, }, /* 0x20 */
{ "testg", 1, }, /* 0x21 */
{ "teste", 1, }, /* 0x22 */
{ "testge", 1, }, /* 0x23 */
{ "testl", 1, }, /* 0x24 */
{ "testne", 1, }, /* 0x25 */
{ "testle", 1, }, /* 0x26 */
{ "testo", 1, }, /* 0x27 */
{ NULL, 0, }, /* 0x28 */
{ NULL, 0, }, /* 0x29 */
{ NULL, 0, }, /* 0x2a */
{ NULL, 0, }, /* 0x2b */
{ NULL, 0, }, /* 0x2c */
{ NULL, 0, }, /* 0x2d */
{ NULL, 0, }, /* 0x2e */
{ NULL, 0, }, /* 0x2f */
{ "bbc", 3, }, /* 0x30 */
{ "cmpobg", 3, }, /* 0x31 */
{ "cmpobe", 3, }, /* 0x32 */
{ "cmpobge", 3, }, /* 0x33 */
{ "cmpobl", 3, }, /* 0x34 */
{ "cmpobne", 3, }, /* 0x35 */
{ "cmpoble", 3, }, /* 0x36 */
{ "bbs", 3, }, /* 0x37 */
{ "cmpibno", 3, }, /* 0x38 */
{ "cmpibg", 3, }, /* 0x39 */
{ "cmpibe", 3, }, /* 0x3a */
{ "cmpibge", 3, }, /* 0x3b */
{ "cmpibl", 3, }, /* 0x3c */
{ "cmpibne", 3, }, /* 0x3d */
{ "cmpible", 3, }, /* 0x3e */
{ "cmpibo", 3, }, /* 0x3f */
};
i = ((word1 >> 24) & 0xff) - 0x20;
if ( cobr_tab[i].name == NULL ){
invalid( word1 );
return;
}
(*info->fprintf_func) ( stream, cobr_tab[i].name );
if ( word1 & 2 ){ /* Predicts branch not taken */
(*info->fprintf_func) ( stream, ".f" );
}
(*info->fprintf_func)( stream, "\t" );
src1 = (word1 >> 19) & 0x1f;
src2 = (word1 >> 14) & 0x1f;
if ( word1 & 0x02000 ){ /* M1 is 1 */
(*info->fprintf_func)( stream, "%d", src1 );
} else { /* M1 is 0 */
(*info->fprintf_func)( stream, reg_names[src1] );
}
if ( cobr_tab[i].numops > 1 ){
if ( word1 & 1 ){ /* S2 is 1 */
(*info->fprintf_func)( stream, ",sf%d,", src2 );
} else { /* S1 is 0 */
(*info->fprintf_func)( stream, ",%s,", reg_names[src2] );
}
/* Extract displacement and convert to address
*/
word1 &= 0x00001ffc;
if ( word1 & 0x00001000 ){ /* Negative displacement */
word1 |= (-1 & ~0x1fff); /* Sign extend */
}
print_addr( memaddr + word1 );
}
}
/****************************************/
/* MEM format */
/****************************************/
static int /* returns instruction length: 4 or 8 */
mem( memaddr, word1, word2, noprint )
bfd_vma memaddr;
unsigned long word1, word2;
int noprint; /* If TRUE, return instruction length, but
* don't output any text.
*/
{
int i, j;
int len;
int mode;
int offset;
const char *reg1, *reg2, *reg3;
/* This lookup table is too sparse to make it worth typing in, but not
so large as to make a sparse array necessary. We create the table
at runtime. */
/*
* NOTE: In this table, the meaning of 'numops' is:
* 1: single operand
* 2: 2 operands, load instruction
* -2: 2 operands, store instruction
*/
static struct tabent *mem_tab;
/* Opcodes of 0x8X, 9X, aX, bX, and cX must be in the table. */
#define MEM_MIN 0x80
#define MEM_MAX 0xcf
#define MEM_SIZ ( * sizeof(struct tabent))
static const struct sparse_tabent mem_init[] = {
{ 0x80, "ldob", 2 },
{ 0x82, "stob", -2 },
{ 0x84, "bx", 1 },
{ 0x85, "balx", 2 },
{ 0x86, "callx", 1 },
{ 0x88, "ldos", 2 },
{ 0x8a, "stos", -2 },
{ 0x8c, "lda", 2 },
{ 0x90, "ld", 2 },
{ 0x92, "st", -2 },
{ 0x98, "ldl", 2 },
{ 0x9a, "stl", -2 },
{ 0xa0, "ldt", 2 },
{ 0xa2, "stt", -2 },
{ 0xac, "dcinva", 1 },
{ 0xb0, "ldq", 2 },
{ 0xb2, "stq", -2 },
{ 0xc0, "ldib", 2 },
{ 0xc2, "stib", -2 },
{ 0xc8, "ldis", 2 },
{ 0xca, "stis", -2 },
{ 0, NULL, 0 }
};
static struct tabent mem_tab_buf[MEM_MAX - MEM_MIN + 1];
if ( mem_tab == NULL ){
mem_tab = mem_tab_buf;
for ( i = 0; mem_init[i].opcode != 0; i++ ){
j = mem_init[i].opcode - MEM_MIN;
mem_tab[j].name = mem_init[i].name;
mem_tab[j].numops = mem_init[i].numops;
}
}
i = ((word1 >> 24) & 0xff) - MEM_MIN;
mode = (word1 >> 10) & 0xf;
if ( (mem_tab[i].name != NULL) /* Valid instruction */
&& ((mode == 5) || (mode >=12)) ){ /* With 32-bit displacement */
len = 8;
} else {
len = 4;
}
if ( noprint ){
return len;
}
if ( (mem_tab[i].name == NULL) || (mode == 6) ){
invalid( word1 );
return len;
}
(*info->fprintf_func)( stream, "%s\t", mem_tab[i].name );
reg1 = reg_names[ (word1 >> 19) & 0x1f ]; /* MEMB only */
reg2 = reg_names[ (word1 >> 14) & 0x1f ];
reg3 = reg_names[ word1 & 0x1f ]; /* MEMB only */
offset = word1 & 0xfff; /* MEMA only */
switch ( mem_tab[i].numops ){
case 2: /* LOAD INSTRUCTION */
if ( mode & 4 ){ /* MEMB FORMAT */
ea( memaddr, mode, reg2, reg3, word1, word2 );
(*info->fprintf_func)( stream, ",%s", reg1 );
} else { /* MEMA FORMAT */
(*info->fprintf_func)( stream, "0x%x", (unsigned) offset );
if (mode & 8) {
(*info->fprintf_func)( stream, "(%s)", reg2 );
}
(*info->fprintf_func)( stream, ",%s", reg1 );
}
break;
case -2: /* STORE INSTRUCTION */
if ( mode & 4 ){ /* MEMB FORMAT */
(*info->fprintf_func)( stream, "%s,", reg1 );
ea( memaddr, mode, reg2, reg3, word1, word2 );
} else { /* MEMA FORMAT */
(*info->fprintf_func)( stream, "%s,0x%x", reg1, (unsigned) offset );
if (mode & 8) {
(*info->fprintf_func)( stream, "(%s)", reg2 );
}
}
break;
case 1: /* BX/CALLX INSTRUCTION */
if ( mode & 4 ){ /* MEMB FORMAT */
ea( memaddr, mode, reg2, reg3, word1, word2 );
} else { /* MEMA FORMAT */
(*info->fprintf_func)( stream, "0x%x", (unsigned) offset );
if (mode & 8) {
(*info->fprintf_func)( stream, "(%s)", reg2 );
}
}
break;
}
return len;
}
/****************************************/
/* REG format */
/****************************************/
static void
reg( word1 )
unsigned long word1;
{
int i, j;
int opcode;
int fp;
int m1, m2, m3;
int s1, s2;
int src, src2, dst;
char *mnemp;
/* This lookup table is too sparse to make it worth typing in, but not
so large as to make a sparse array necessary. We create the table
at runtime. */
/*
* NOTE: In this table, the meaning of 'numops' is:
* 1: single operand, which is NOT a destination.
* -1: single operand, which IS a destination.
* 2: 2 operands, the 2nd of which is NOT a destination.
* -2: 2 operands, the 2nd of which IS a destination.
* 3: 3 operands
*
* If an opcode mnemonic begins with "F", it is a floating-point
* opcode (the "F" is not printed).
*/
static struct tabent *reg_tab;
static const struct sparse_tabent reg_init[] = {
#define REG_MIN 0x580
{ 0x580, "notbit", 3 },
{ 0x581, "and", 3 },
{ 0x582, "andnot", 3 },
{ 0x583, "setbit", 3 },
{ 0x584, "notand", 3 },
{ 0x586, "xor", 3 },
{ 0x587, "or", 3 },
{ 0x588, "nor", 3 },
{ 0x589, "xnor", 3 },
{ 0x58a, "not", -2 },
{ 0x58b, "ornot", 3 },
{ 0x58c, "clrbit", 3 },
{ 0x58d, "notor", 3 },
{ 0x58e, "nand", 3 },
{ 0x58f, "alterbit", 3 },
{ 0x590, "addo", 3 },
{ 0x591, "addi", 3 },
{ 0x592, "subo", 3 },
{ 0x593, "subi", 3 },
{ 0x594, "cmpob", 2 },
{ 0x595, "cmpib", 2 },
{ 0x596, "cmpos", 2 },
{ 0x597, "cmpis", 2 },
{ 0x598, "shro", 3 },
{ 0x59a, "shrdi", 3 },
{ 0x59b, "shri", 3 },
{ 0x59c, "shlo", 3 },
{ 0x59d, "rotate", 3 },
{ 0x59e, "shli", 3 },
{ 0x5a0, "cmpo", 2 },
{ 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 },
{ 0x5ae, "chkbit", 2 },
{ 0x5b0, "addc", 3 },
{ 0x5b2, "subc", 3 },
{ 0x5b4, "intdis", 0 },
{ 0x5b5, "inten", 0 },
{ 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 },
{ 0x659, "sysctl", 3 },
{ 0x65b, "icctl", 3 },
{ 0x65c, "dcctl", 3 },
{ 0x65d, "halt", 0 },
{ 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 },
{ 0x781, "addino", 3 },
{ 0x782, "subono", 3 },
{ 0x783, "subino", 3 },
{ 0x784, "selno", 3 },
{ 0x78b, "Fdivr", 3 },
{ 0x78c, "Fmulr", 3 },
{ 0x78d, "Fsubr", 3 },
{ 0x78f, "Faddr", 3 },
{ 0x790, "addog", 3 },
{ 0x791, "addig", 3 },
{ 0x792, "subog", 3 },
{ 0x793, "subig", 3 },
{ 0x794, "selg", 3 },
{ 0x79b, "Fdivrl", 3 },
{ 0x79c, "Fmulrl", 3 },
{ 0x79d, "Fsubrl", 3 },
{ 0x79f, "Faddrl", 3 },
{ 0x7a0, "addoe", 3 },
{ 0x7a1, "addie", 3 },
{ 0x7a2, "suboe", 3 },
{ 0x7a3, "subie", 3 },
{ 0x7a4, "sele", 3 },
{ 0x7b0, "addoge", 3 },
{ 0x7b1, "addige", 3 },
{ 0x7b2, "suboge", 3 },
{ 0x7b3, "subige", 3 },
{ 0x7b4, "selge", 3 },
{ 0x7c0, "addol", 3 },
{ 0x7c1, "addil", 3 },
{ 0x7c2, "subol", 3 },
{ 0x7c3, "subil", 3 },
{ 0x7c4, "sell", 3 },
{ 0x7d0, "addone", 3 },
{ 0x7d1, "addine", 3 },
{ 0x7d2, "subone", 3 },
{ 0x7d3, "subine", 3 },
{ 0x7d4, "selne", 3 },
{ 0x7e0, "addole", 3 },
{ 0x7e1, "addile", 3 },
{ 0x7e2, "subole", 3 },
{ 0x7e3, "subile", 3 },
{ 0x7e4, "selle", 3 },
{ 0x7f0, "addoo", 3 },
{ 0x7f1, "addio", 3 },
{ 0x7f2, "suboo", 3 },
{ 0x7f3, "subio", 3 },
{ 0x7f4, "selo", 3 },
#define REG_MAX 0x7f4
{ 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 )
bfd_vma 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( (bfd_vma)word2 );
break;
case 13: /* displ(reg) */
print_addr( (bfd_vma)word2 );
(*info->fprintf_func)( stream, "(%s)", reg2 );
break;
case 14: /* displ[index*scale] */
print_addr( (bfd_vma)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( (bfd_vma)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)
bfd_vma a;
{
(*info->print_address_func) (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
}
Reference in a new issue Copy permalink