diff options
-rw-r--r-- | opcodes/ChangeLog | 5 | ||||
-rw-r--r-- | opcodes/i960-dis.c | 914 |
2 files changed, 919 insertions, 0 deletions
diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog index d30f30e..22d61a0 100644 --- a/opcodes/ChangeLog +++ b/opcodes/ChangeLog @@ -1,3 +1,8 @@ +Wed Feb 8 17:29:29 1995 Stan Shebs <shebs@andros.cygnus.com> + + * i960-dis.c (struct tabent, struct sparse_tabent): Declare the + char fields as signed chars, since they may have negative values. + Mon Feb 6 10:52:06 1995 J.T. Conklin <jtc@rtl.cygnus.com> * i386-dis.c (dis386_twobyte): Add cpuid, From Charles Hannum diff --git a/opcodes/i960-dis.c b/opcodes/i960-dis.c new file mode 100644 index 0000000..0612d04 --- /dev/null +++ b/opcodes/i960-dis.c @@ -0,0 +1,914 @@ +/* Disassemble i80960 instructions. + Copyright (C) 1990, 1991 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, 675 Mass Ave, Cambridge, MA 02139, 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; + signed char numops; +}; + +struct sparse_tabent { + int opcode; + char *name; + signed char numops; +}; + +static int +pinsn( memaddr, word1, word2 ) + unsigned long 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 ) + unsigned long 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 ) + unsigned long 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 ) + unsigned long 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, + 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, /* xl */ + 0x595, "cmpib", 2, /* xl */ + 0x596, "cmpos", 2, /* xl */ + 0x597, "cmpis", 2, /* xl */ + 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, /* 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 +} |