/* Print National Semiconductor 32000 instructions.
- Copyright 1986, 1988, 1991, 1992, 1994, 1998, 2001
- Free Software Foundation, Inc.
+ Copyright (C) 1986-2020 Free Software Foundation, Inc.
-This file is part of opcodes library.
+ 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 program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
-
-#include "bfd.h"
#include "sysdep.h"
-#include "dis-asm.h"
+#include "bfd.h"
+#include "disassemble.h"
#if !defined(const) && !defined(__STDC__)
#define const
#endif
static disassemble_info *dis_info;
-/*
- * Hacks to get it to compile <= READ THESE AS FIXES NEEDED
- */
-#define INVALID_FLOAT(val, size) invalid_float((char *)val, size)
-
-static int print_insn_arg
- PARAMS ((int, int, int *, char *, bfd_vma, char *, int));
-static int get_displacement PARAMS ((char *, int *));
-static int invalid_float PARAMS ((char *, int));
-static long int read_memory_integer PARAMS ((unsigned char *, int));
-static int fetch_data PARAMS ((struct disassemble_info *, bfd_byte *));
-struct ns32k_option;
-static void optlist PARAMS ((int, const struct ns32k_option *, char *));
-static void list_search PARAMS ((int, const struct ns32k_option *, char *));
-static int bit_extract PARAMS ((bfd_byte *, int, int));
-static int bit_extract_simple PARAMS ((bfd_byte *, int, int));
-static void bit_copy PARAMS ((char *, int, int, char *));
-static int sign_extend PARAMS ((int, int));
-static void flip_bytes PARAMS ((char *, int));
-
-static long read_memory_integer(addr, nr)
- unsigned char *addr;
- int nr;
+/* Hacks to get it to compile <= READ THESE AS FIXES NEEDED. */
+#define INVALID_FLOAT(val, size) invalid_float ((bfd_byte *) val, size)
+
+static long
+read_memory_integer (unsigned char * addr, int nr)
{
long val;
int i;
- for (val = 0, i = nr - 1; i >= 0; i--) {
- val = (val << 8);
- val |= (0xff & *(addr + i));
- }
+
+ for (val = 0, i = nr - 1; i >= 0; i--)
+ {
+ val = (val << 8);
+ val |= (0xff & *(addr + i));
+ }
return val;
}
/* 32000 instructions are never longer than this. */
#define MAXLEN 62
-
#include <setjmp.h>
struct private
bfd_byte *max_fetched;
bfd_byte the_buffer[MAXLEN];
bfd_vma insn_start;
- jmp_buf bailout;
+ OPCODES_SIGJMP_BUF bailout;
};
? 1 : fetch_data ((info), (addr)))
static int
-fetch_data (info, addr)
- struct disassemble_info *info;
- bfd_byte *addr;
+fetch_data (struct disassemble_info *info, bfd_byte *addr)
{
int status;
- struct private *priv = (struct private *)info->private_data;
+ struct private *priv = (struct private *) info->private_data;
bfd_vma start = priv->insn_start + (priv->max_fetched - priv->the_buffer);
status = (*info->read_memory_func) (start,
if (status != 0)
{
(*info->memory_error_func) (status, start, info);
- longjmp (priv->bailout, 1);
+ OPCODES_SIGLONGJMP (priv->bailout, 1);
}
else
priv->max_fetched = addr;
return 1;
}
+
/* Number of elements in the opcode table. */
#define NOPCODES (sizeof ns32k_opcodes / sizeof ns32k_opcodes[0])
#define NEXT_IS_ADDR '|'
\f
-struct ns32k_option {
- char *pattern; /* the option itself */
- unsigned long value; /* binary value of the option */
- unsigned long match; /* these bits must match */
+struct ns32k_option
+{
+ char *pattern; /* The option itself. */
+ unsigned long value; /* Binary value of the option. */
+ unsigned long match; /* These bits must match. */
};
\f
-static const struct ns32k_option opt_u[]= /* restore, exit */
+static const struct ns32k_option opt_u[]= /* Restore, exit. */
{
{ "r0", 0x80, 0x80 },
{ "r1", 0x40, 0x40 },
{ 0 , 0x00, 0x00 }
};
-static const struct ns32k_option opt_U[]= /* save, enter */
+static const struct ns32k_option opt_U[]= /* Save, enter. */
{
{ "r0", 0x01, 0x01 },
{ "r1", 0x02, 0x02 },
{ 0 , 0x00, 0x00 }
};
-static const struct ns32k_option opt_O[]= /* setcfg */
+static const struct ns32k_option opt_O[]= /* Setcfg. */
{
{ "c", 0x8, 0x8 },
{ "m", 0x4, 0x4 },
{ 0 , 0x0, 0x0 }
};
-static const struct ns32k_option opt_C[]= /* cinv */
+static const struct ns32k_option opt_C[]= /* Cinv. */
{
{ "a", 0x4, 0x4 },
{ "i", 0x2, 0x2 },
{ 0 , 0x0, 0x0 }
};
-static const struct ns32k_option opt_S[]= /* string inst */
+static const struct ns32k_option opt_S[]= /* String inst. */
{
{ "b", 0x1, 0x1 },
{ "u", 0x6, 0x6 },
{ 0 , 0x0, 0x0 }
};
-static const struct ns32k_option list_P532[]= /* lpr spr */
+static const struct ns32k_option list_P532[]= /* Lpr spr. */
{
{ "us", 0x0, 0xf },
{ "dcr", 0x1, 0xf },
{ 0 , 0x00, 0xf }
};
-static const struct ns32k_option list_M532[]= /* lmr smr */
+static const struct ns32k_option list_M532[]= /* Lmr smr. */
{
{ "mcr", 0x9, 0xf },
{ "msr", 0xa, 0xf },
{ 0 , 0x0, 0xf }
};
-static const struct ns32k_option list_P032[]= /* lpr spr */
+static const struct ns32k_option list_P032[]= /* Lpr spr. */
{
{ "upsr", 0x0, 0xf },
{ "fp", 0x8, 0xf },
{ 0 , 0x0, 0xf }
};
-static const struct ns32k_option list_M032[]= /* lmr smr */
+static const struct ns32k_option list_M032[]= /* Lmr smr. */
{
{ "bpr0", 0x0, 0xf },
{ "bpr1", 0x1, 0xf },
};
-/*
- * figure out which options are present
- */
+/* Figure out which options are present. */
+
static void
-optlist(options, optionP, result)
- int options;
- const struct ns32k_option *optionP;
- char *result;
+optlist (int options, const struct ns32k_option * optionP, char * result)
{
- if (options == 0) {
- sprintf(result, "[]");
- return;
+ if (options == 0)
+ {
+ sprintf (result, "[]");
+ return;
}
- sprintf(result, "[");
-
- for (; (options != 0) && optionP->pattern; optionP++) {
- if ((options & optionP->match) == optionP->value) {
- /* we found a match, update result and options */
- strcat(result, optionP->pattern);
- options &= ~optionP->value;
- if (options != 0) /* more options to come */
- strcat(result, ",");
+
+ sprintf (result, "[");
+
+ for (; (options != 0) && optionP->pattern; optionP++)
+ {
+ if ((options & optionP->match) == optionP->value)
+ {
+ /* We found a match, update result and options. */
+ strcat (result, optionP->pattern);
+ options &= ~optionP->value;
+ if (options != 0) /* More options to come. */
+ strcat (result, ",");
}
}
- if (options != 0)
- strcat(result, "undefined");
- strcat(result, "]");
+ if (options != 0)
+ strcat (result, "undefined");
+
+ strcat (result, "]");
}
static void
-list_search (reg_value, optionP, result)
- int reg_value;
- const struct ns32k_option *optionP;
- char *result;
+list_search (int reg_value, const struct ns32k_option *optionP, char *result)
{
- for (; optionP->pattern; optionP++) {
- if ((reg_value & optionP->match) == optionP->value) {
- sprintf(result, "%s", optionP->pattern);
- return;
+ for (; optionP->pattern; optionP++)
+ {
+ if ((reg_value & optionP->match) == optionP->value)
+ {
+ sprintf (result, "%s", optionP->pattern);
+ return;
}
}
- sprintf(result, "undefined");
+ sprintf (result, "undefined");
}
\f
-/*
- * extract "count" bits starting "offset" bits
- * into buffer
- */
+/* Extract "count" bits starting "offset" bits into buffer. */
static int
-bit_extract (buffer, offset, count)
- bfd_byte *buffer;
- int offset;
- int count;
+bit_extract (bfd_byte *buffer, int offset, int count)
{
- int result;
- int bit;
+ unsigned int result;
+ unsigned int bit;
+ if (offset < 0 || count < 0)
+ return 0;
buffer += offset >> 3;
offset &= 7;
bit = 1;
result = 0;
while (count--)
{
- FETCH_DATA(dis_info, buffer + 1);
+ FETCH_DATA (dis_info, buffer + 1);
if ((*buffer & (1 << offset)))
result |= bit;
if (++offset == 8)
return result;
}
-/* Like bit extract but the buffer is valid and doen't need to be
- * fetched
- */
+/* Like bit extract but the buffer is valid and doen't need to be fetched. */
+
static int
-bit_extract_simple (buffer, offset, count)
- bfd_byte *buffer;
- int offset;
- int count;
+bit_extract_simple (bfd_byte *buffer, int offset, int count)
{
- int result;
- int bit;
+ unsigned int result;
+ unsigned int bit;
+ if (offset < 0 || count < 0)
+ return 0;
buffer += offset >> 3;
offset &= 7;
bit = 1;
}
static void
-bit_copy (buffer, offset, count, to)
- char *buffer;
- int offset;
- int count;
- char *to;
+bit_copy (bfd_byte *buffer, int offset, int count, char *to)
{
- for(; count > 8; count -= 8, to++, offset += 8)
+ if (offset < 0 || count < 0)
+ return;
+ for (; count > 8; count -= 8, to++, offset += 8)
*to = bit_extract (buffer, offset, 8);
*to = bit_extract (buffer, offset, count);
}
-
static int
-sign_extend (value, bits)
- int value, bits;
+sign_extend (unsigned int value, unsigned int bits)
{
- value = value & ((1 << bits) - 1);
- return (value & (1 << (bits-1))
- ? value | (~((1 << bits) - 1))
- : value);
+ unsigned int sign = 1u << (bits - 1);
+ return ((value & (sign + sign - 1)) ^ sign) - sign;
}
static void
-flip_bytes (ptr, count)
- char *ptr;
- int count;
+flip_bytes (char *ptr, int count)
{
char tmp;
while (count > 0)
{
tmp = ptr[0];
- ptr[0] = ptr[count-1];
- ptr[count-1] = tmp;
+ ptr[0] = ptr[count - 1];
+ ptr[count - 1] = tmp;
ptr++;
count -= 2;
}
}
\f
/* Given a character C, does it represent a general addressing mode? */
-#define Is_gen(c) \
- ((c) == 'F' || (c) == 'L' || (c) == 'B' \
- || (c) == 'W' || (c) == 'D' || (c) == 'A' || (c) == 'I' || (c) == 'Z')
+#define Is_gen(c) (strchr ("FLBWDAIZf", (c)) != NULL)
/* Adressing modes. */
-#define Adrmod_index_byte 0x1c
-#define Adrmod_index_word 0x1d
-#define Adrmod_index_doubleword 0x1e
-#define Adrmod_index_quadword 0x1f
+#define Adrmod_index_byte 0x1c
+#define Adrmod_index_word 0x1d
+#define Adrmod_index_doubleword 0x1e
+#define Adrmod_index_quadword 0x1f
/* Is MODE an indexed addressing mode? */
#define Adrmod_is_index(mode) \
- (mode == Adrmod_index_byte \
+ ( mode == Adrmod_index_byte \
|| mode == Adrmod_index_word \
|| mode == Adrmod_index_doubleword \
|| mode == Adrmod_index_quadword)
\f
-/* Print the 32000 instruction at address MEMADDR in debugged memory,
- on STREAM. Returns length of the instruction, in bytes. */
-
-int
-print_insn_ns32k (memaddr, info)
- bfd_vma memaddr;
- disassemble_info *info;
+static int
+get_displacement (bfd_byte *buffer, int *aoffsetp)
{
- register unsigned int i;
- register char *d;
- unsigned short first_word;
- int ioffset; /* bits into instruction */
- int aoffset; /* bits into arguments */
- char arg_bufs[MAX_ARGS+1][ARG_LEN];
- int argnum;
- int maxarg;
- struct private priv;
- bfd_byte *buffer = priv.the_buffer;
- dis_info = info;
-
- info->private_data = (PTR) &priv;
- priv.max_fetched = priv.the_buffer;
- priv.insn_start = memaddr;
- if (setjmp (priv.bailout) != 0)
- /* Error return. */
- return -1;
-
- /* Look for 8bit opcodes first. Other wise, fetching two bytes could take
- * us over the end of accessible data unnecessarilly
- */
- FETCH_DATA(info, buffer + 1);
- for (i = 0; i < NOPCODES; i++)
- if (ns32k_opcodes[i].opcode_id_size <= 8
- && ((buffer[0]
- & (((unsigned long) 1 << ns32k_opcodes[i].opcode_id_size) - 1))
- == ns32k_opcodes[i].opcode_seed))
- break;
- if (i == NOPCODES) {
- /* Maybe it is 9 to 16 bits big */
- FETCH_DATA(info, buffer + 2);
- first_word = read_memory_integer(buffer, 2);
-
- for (i = 0; i < NOPCODES; i++)
- if ((first_word
- & (((unsigned long) 1 << ns32k_opcodes[i].opcode_id_size) - 1))
- == ns32k_opcodes[i].opcode_seed)
- break;
-
- /* Handle undefined instructions. */
- if (i == NOPCODES)
- {
- (*dis_info->fprintf_func)(dis_info->stream, "0%o", buffer[0]);
- return 1;
- }
- }
-
- (*dis_info->fprintf_func)(dis_info->stream, "%s", ns32k_opcodes[i].name);
-
- ioffset = ns32k_opcodes[i].opcode_size;
- aoffset = ns32k_opcodes[i].opcode_size;
- d = ns32k_opcodes[i].operands;
+ int Ivalue;
+ short Ivalue2;
- if (*d)
+ Ivalue = bit_extract (buffer, *aoffsetp, 8);
+ switch (Ivalue & 0xc0)
{
- /* Offset in bits of the first thing beyond each index byte.
- Element 0 is for operand A and element 1 is for operand B.
- The rest are irrelevant, but we put them here so we don't
- index outside the array. */
- int index_offset[MAX_ARGS];
-
- /* 0 for operand A, 1 for operand B, greater for other args. */
- int whicharg = 0;
-
- (*dis_info->fprintf_func)(dis_info->stream, "\t");
-
- maxarg = 0;
-
- /* First we have to find and keep track of the index bytes,
- if we are using scaled indexed addressing mode, since the index
- bytes occur right after the basic instruction, not as part
- of the addressing extension. */
- if (Is_gen(d[1]))
- {
- int addr_mode = bit_extract (buffer, ioffset - 5, 5);
+ case 0x00:
+ case 0x40:
+ Ivalue = sign_extend (Ivalue, 7);
+ *aoffsetp += 8;
+ break;
+ case 0x80:
+ Ivalue2 = bit_extract (buffer, *aoffsetp, 16);
+ flip_bytes ((char *) & Ivalue2, 2);
+ Ivalue = sign_extend (Ivalue2, 14);
+ *aoffsetp += 16;
+ break;
+ case 0xc0:
+ Ivalue = bit_extract (buffer, *aoffsetp, 32);
+ flip_bytes ((char *) & Ivalue, 4);
+ Ivalue = sign_extend (Ivalue, 30);
+ *aoffsetp += 32;
+ break;
+ }
+ return Ivalue;
+}
- if (Adrmod_is_index (addr_mode))
- {
- aoffset += 8;
- index_offset[0] = aoffset;
- }
- }
- if (d[2] && Is_gen(d[3]))
- {
- int addr_mode = bit_extract (buffer, ioffset - 10, 5);
+#if 1 /* A version that should work on ns32k f's&d's on any machine. */
+static int
+invalid_float (bfd_byte *p, int len)
+{
+ int val;
+
+ if (len == 4)
+ val = (bit_extract_simple (p, 23, 8)/*exponent*/ == 0xff
+ || (bit_extract_simple (p, 23, 8)/*exponent*/ == 0
+ && bit_extract_simple (p, 0, 23)/*mantisa*/ != 0));
+ else if (len == 8)
+ val = (bit_extract_simple (p, 52, 11)/*exponent*/ == 0x7ff
+ || (bit_extract_simple (p, 52, 11)/*exponent*/ == 0
+ && (bit_extract_simple (p, 0, 32)/*low mantisa*/ != 0
+ || bit_extract_simple (p, 32, 20)/*high mantisa*/ != 0)));
+ else
+ val = 1;
+ return (val);
+}
+#else
+/* Assumes the bytes have been swapped to local order. */
+typedef union
+{
+ double d;
+ float f;
+ struct { unsigned m:23, e:8, :1;} sf;
+ struct { unsigned lm; unsigned m:20, e:11, :1;} sd;
+} float_type_u;
- if (Adrmod_is_index (addr_mode))
- {
- aoffset += 8;
- index_offset[1] = aoffset;
- }
- }
+static int
+invalid_float (float_type_u *p, int len)
+{
+ int val;
- while (*d)
- {
- argnum = *d - '1';
- d++;
- if (argnum > maxarg && argnum < MAX_ARGS)
- maxarg = argnum;
- ioffset = print_insn_arg (*d, ioffset, &aoffset, buffer,
- memaddr, arg_bufs[argnum],
- index_offset[whicharg]);
- d++;
- whicharg++;
- }
- for (argnum = 0; argnum <= maxarg; argnum++)
- {
- bfd_vma addr;
- char *ch;
- for (ch = arg_bufs[argnum]; *ch;)
- {
- if (*ch == NEXT_IS_ADDR)
- {
- ++ch;
- addr = bfd_scan_vma (ch, NULL, 16);
- (*dis_info->print_address_func) (addr, dis_info);
- while (*ch && *ch != NEXT_IS_ADDR)
- ++ch;
- if (*ch)
- ++ch;
- }
- else
- (*dis_info->fprintf_func)(dis_info->stream, "%c", *ch++);
- }
- if (argnum < maxarg)
- (*dis_info->fprintf_func)(dis_info->stream, ", ");
- }
- }
- return aoffset / 8;
+ if (len == sizeof (float))
+ val = (p->sf.e == 0xff
+ || (p->sf.e == 0 && p->sf.m != 0));
+ else if (len == sizeof (double))
+ val = (p->sd.e == 0x7ff
+ || (p->sd.e == 0 && (p->sd.m != 0 || p->sd.lm != 0)));
+ else
+ val = 1;
+ return val;
}
+#endif
/* Print an instruction operand of category given by d. IOFFSET is
the bit position below which small (<1 byte) parts of the operand can
bit position of the addressing extension. BUFFER contains the
instruction. ADDR is where BUFFER was read from. Put the disassembled
version of the operand in RESULT. INDEX_OFFSET is the bit position
- of the index byte (it contains garbage if this operand is not a
+ of the index byte (it contains -1 if this operand is not a
general operand using scaled indexed addressing mode). */
static int
-print_insn_arg (d, ioffset, aoffsetp, buffer, addr, result, index_offset)
- int d;
- int ioffset, *aoffsetp;
- char *buffer;
- bfd_vma addr;
- char *result;
- int index_offset;
+print_insn_arg (int d,
+ int ioffset,
+ int *aoffsetp,
+ bfd_byte *buffer,
+ bfd_vma addr,
+ char *result,
+ int index_offset)
{
- int addr_mode;
- float Fvalue;
- double Lvalue;
+ union
+ {
+ float f;
+ double d;
+ int i[2];
+ } value;
int Ivalue;
+ int addr_mode;
int disp1, disp2;
- int index;
int size;
switch (d)
{
case 'f':
- /* a "gen" operand but 5 bits from the end of instruction */
+ /* A "gen" operand but 5 bits from the end of instruction. */
ioffset -= 5;
+ /* Fall through. */
case 'Z':
case 'F':
case 'L':
case 'W':
case 'D':
case 'A':
- addr_mode = bit_extract (buffer, ioffset-5, 5);
+ addr_mode = bit_extract (buffer, ioffset - 5, 5);
ioffset -= 5;
switch (addr_mode)
{
case 0x0: case 0x1: case 0x2: case 0x3:
case 0x4: case 0x5: case 0x6: case 0x7:
- /* register mode R0 -- R7 */
+ /* Register mode R0 -- R7. */
switch (d)
{
case 'F':
break;
case 0x8: case 0x9: case 0xa: case 0xb:
case 0xc: case 0xd: case 0xe: case 0xf:
- /* Register relative disp(R0 -- R7) */
+ /* Register relative disp(R0 -- R7). */
disp1 = get_displacement (buffer, aoffsetp);
sprintf (result, "%d(r%d)", disp1, addr_mode & 7);
break;
case 0x10:
case 0x11:
case 0x12:
- /* Memory relative disp2(disp1(FP, SP, SB)) */
+ /* Memory relative disp2(disp1(FP, SP, SB)). */
disp1 = get_displacement (buffer, aoffsetp);
disp2 = get_displacement (buffer, aoffsetp);
sprintf (result, "%d(%d(%s))", disp2, disp1,
- addr_mode==0x10?"fp":addr_mode==0x11?"sp":"sb");
+ addr_mode == 0x10 ? "fp" : addr_mode == 0x11 ? "sp" : "sb");
break;
case 0x13:
- /* reserved */
+ /* Reserved. */
sprintf (result, "reserved");
break;
case 0x14:
- /* Immediate */
+ /* Immediate. */
switch (d)
{
- case 'I': case 'Z': case 'A':
+ default:
/* I and Z are output operands and can`t be immediate
- * A is an address and we can`t have the address of
- * an immediate either. We don't know how much to increase
- * aoffsetp by since whatever generated this is broken
- * anyway!
- */
+ A is an address and we can`t have the address of
+ an immediate either. We don't know how much to increase
+ aoffsetp by since whatever generated this is broken
+ anyway! */
sprintf (result, _("$<undefined>"));
break;
case 'B':
sprintf (result, "$%d", Ivalue);
break;
case 'F':
- bit_copy (buffer, *aoffsetp, 32, (char *) &Fvalue);
- flip_bytes ((char *) & Fvalue, 4);
+ bit_copy (buffer, *aoffsetp, 32, (char *) &value.f);
+ flip_bytes ((char *) &value.f, 4);
*aoffsetp += 32;
- if (INVALID_FLOAT (&Fvalue, 4))
- sprintf (result, "<<invalid float 0x%.8x>>", *(int *) &Fvalue);
- else /* assume host has ieee float */
- sprintf (result, "$%g", Fvalue);
+ if (INVALID_FLOAT (&value.f, 4))
+ sprintf (result, "<<invalid float 0x%.8x>>", value.i[0]);
+ else /* Assume host has ieee float. */
+ sprintf (result, "$%g", value.f);
break;
case 'L':
- bit_copy (buffer, *aoffsetp, 64, (char *) &Lvalue);
- flip_bytes ((char *) & Lvalue, 8);
+ bit_copy (buffer, *aoffsetp, 64, (char *) &value.d);
+ flip_bytes ((char *) &value.d, 8);
*aoffsetp += 64;
- if (INVALID_FLOAT (&Lvalue, 8))
- sprintf (result, "<<invalid long 0x%.8x%.8x>>",
- *(((int *) &Lvalue) + 1), *(int *) &Lvalue);
- else /* assume host has ieee float */
- sprintf (result, "$%g", Lvalue);
+ if (INVALID_FLOAT (&value.d, 8))
+ sprintf (result, "<<invalid double 0x%.8x%.8x>>",
+ value.i[1], value.i[0]);
+ else /* Assume host has ieee float. */
+ sprintf (result, "$%g", value.d);
break;
}
break;
case 0x15:
- /* Absolute @disp */
+ /* Absolute @disp. */
disp1 = get_displacement (buffer, aoffsetp);
sprintf (result, "@|%d|", disp1);
break;
case 0x16:
- /* External EXT(disp1) + disp2 (Mod table stuff) */
+ /* External EXT(disp1) + disp2 (Mod table stuff). */
disp1 = get_displacement (buffer, aoffsetp);
disp2 = get_displacement (buffer, aoffsetp);
sprintf (result, "EXT(%d) + %d", disp1, disp2);
break;
case 0x17:
- /* Top of stack tos */
+ /* Top of stack tos. */
sprintf (result, "tos");
break;
case 0x18:
- /* Memory space disp(FP) */
+ /* Memory space disp(FP). */
disp1 = get_displacement (buffer, aoffsetp);
sprintf (result, "%d(fp)", disp1);
break;
case 0x19:
- /* Memory space disp(SP) */
+ /* Memory space disp(SP). */
disp1 = get_displacement (buffer, aoffsetp);
sprintf (result, "%d(sp)", disp1);
break;
case 0x1a:
- /* Memory space disp(SB) */
+ /* Memory space disp(SB). */
disp1 = get_displacement (buffer, aoffsetp);
sprintf (result, "%d(sb)", disp1);
break;
case 0x1b:
- /* Memory space disp(PC) */
+ /* Memory space disp(PC). */
disp1 = get_displacement (buffer, aoffsetp);
*result++ = NEXT_IS_ADDR;
sprintf_vma (result, addr + disp1);
case 0x1d:
case 0x1e:
case 0x1f:
- /* Scaled index basemode[R0 -- R7:B,W,D,Q] */
- index = bit_extract (buffer, index_offset - 8, 3);
- print_insn_arg (d, index_offset, aoffsetp, buffer, addr,
- result, 0);
{
+ int bit_index;
static const char *ind = "bwdq";
char *off;
+ /* Scaled index basemode[R0 -- R7:B,W,D,Q]. */
+ bit_index = bit_extract (buffer, index_offset - 8, 3);
+ print_insn_arg (d, index_offset, aoffsetp, buffer, addr,
+ result, 0);
off = result + strlen (result);
- sprintf (off, "[r%d:%c]", index,
- ind[addr_mode & 3]);
+ sprintf (off, "[r%d:%c]", bit_index, ind[addr_mode & 3]);
}
break;
}
break;
case 'b':
Ivalue = get_displacement (buffer, aoffsetp);
- /*
- * Warning!! HACK ALERT!
- * Operand type 'b' is only used by the cmp{b,w,d} and
- * movm{b,w,d} instructions; we need to know whether
- * it's a `b' or `w' or `d' instruction; and for both
- * cmpm and movm it's stored at the same place so we
- * just grab two bits of the opcode and look at it...
- *
- */
+ /* Warning!! HACK ALERT!
+ Operand type 'b' is only used by the cmp{b,w,d} and
+ movm{b,w,d} instructions; we need to know whether
+ it's a `b' or `w' or `d' instruction; and for both
+ cmpm and movm it's stored at the same place so we
+ just grab two bits of the opcode and look at it... */
size = bit_extract(buffer, ioffset-6, 2);
- if (size == 0) /* 00 => b */
+ if (size == 0) /* 00 => b. */
size = 1;
- else if (size == 1) /* 01 => w */
+ else if (size == 1) /* 01 => w. */
size = 2;
else
- size = 4; /* 11 => d */
+ size = 4; /* 11 => d. */
sprintf (result, "%d", (Ivalue / size) + 1);
break;
break;
case 'u':
Ivalue = bit_extract (buffer, *aoffsetp, 8);
- optlist(Ivalue, opt_u, result);
+ optlist (Ivalue, opt_u, result);
*aoffsetp += 8;
break;
case 'U':
- Ivalue = bit_extract(buffer, *aoffsetp, 8);
- optlist(Ivalue, opt_U, result);
+ Ivalue = bit_extract (buffer, *aoffsetp, 8);
+ optlist (Ivalue, opt_U, result);
*aoffsetp += 8;
break;
case 'O':
- Ivalue = bit_extract(buffer, ioffset-9, 9);
- optlist(Ivalue, opt_O, result);
+ Ivalue = bit_extract (buffer, ioffset - 9, 9);
+ optlist (Ivalue, opt_O, result);
ioffset -= 9;
break;
case 'C':
- Ivalue = bit_extract(buffer, ioffset-4, 4);
- optlist(Ivalue, opt_C, result);
+ Ivalue = bit_extract (buffer, ioffset - 4, 4);
+ optlist (Ivalue, opt_C, result);
ioffset -= 4;
break;
case 'S':
- Ivalue = bit_extract(buffer, ioffset - 8, 8);
- optlist(Ivalue, opt_S, result);
+ Ivalue = bit_extract (buffer, ioffset - 8, 8);
+ optlist (Ivalue, opt_S, result);
ioffset -= 8;
break;
case 'M':
- Ivalue = bit_extract(buffer, ioffset-4, 4);
- list_search(Ivalue, 0 ? list_M032 : list_M532, result);
+ Ivalue = bit_extract (buffer, ioffset - 4, 4);
+ list_search (Ivalue, 0 ? list_M032 : list_M532, result);
ioffset -= 4;
break;
case 'P':
- Ivalue = bit_extract(buffer, ioffset-4, 4);
- list_search(Ivalue, 0 ? list_P032 : list_P532, result);
+ Ivalue = bit_extract (buffer, ioffset - 4, 4);
+ list_search (Ivalue, 0 ? list_P032 : list_P532, result);
ioffset -= 4;
break;
case 'g':
- Ivalue = bit_extract(buffer, *aoffsetp, 3);
- sprintf(result, "%d", Ivalue);
+ Ivalue = bit_extract (buffer, *aoffsetp, 3);
+ sprintf (result, "%d", Ivalue);
*aoffsetp += 3;
break;
case 'G':
Ivalue = bit_extract(buffer, *aoffsetp, 5);
- sprintf(result, "%d", Ivalue + 1);
+ sprintf (result, "%d", Ivalue + 1);
*aoffsetp += 5;
break;
}
return ioffset;
}
-static int
-get_displacement (buffer, aoffsetp)
- char *buffer;
- int *aoffsetp;
+\f
+/* Print the 32000 instruction at address MEMADDR in debugged memory,
+ on STREAM. Returns length of the instruction, in bytes. */
+
+int
+print_insn_ns32k (bfd_vma memaddr, disassemble_info *info)
{
- int Ivalue;
- short Ivalue2;
+ unsigned int i;
+ const char *d;
+ unsigned short first_word;
+ int ioffset; /* Bits into instruction. */
+ int aoffset; /* Bits into arguments. */
+ char arg_bufs[MAX_ARGS+1][ARG_LEN];
+ int argnum;
+ int maxarg;
+ struct private priv;
+ bfd_byte *buffer = priv.the_buffer;
+ dis_info = info;
- Ivalue = bit_extract (buffer, *aoffsetp, 8);
- switch (Ivalue & 0xc0)
- {
- case 0x00:
- case 0x40:
- Ivalue = sign_extend (Ivalue, 7);
- *aoffsetp += 8;
- break;
- case 0x80:
- Ivalue2 = bit_extract (buffer, *aoffsetp, 16);
- flip_bytes ((char *) & Ivalue2, 2);
- Ivalue = sign_extend (Ivalue2, 14);
- *aoffsetp += 16;
- break;
- case 0xc0:
- Ivalue = bit_extract (buffer, *aoffsetp, 32);
- flip_bytes ((char *) & Ivalue, 4);
- Ivalue = sign_extend (Ivalue, 30);
- *aoffsetp += 32;
+ info->private_data = & priv;
+ priv.max_fetched = priv.the_buffer;
+ priv.insn_start = memaddr;
+ if (OPCODES_SIGSETJMP (priv.bailout) != 0)
+ /* Error return. */
+ return -1;
+
+ /* Look for 8bit opcodes first. Other wise, fetching two bytes could take
+ us over the end of accessible data unnecessarilly. */
+ FETCH_DATA (info, buffer + 1);
+ for (i = 0; i < NOPCODES; i++)
+ if (ns32k_opcodes[i].opcode_id_size <= 8
+ && ((buffer[0]
+ & (((unsigned long) 1 << ns32k_opcodes[i].opcode_id_size) - 1))
+ == ns32k_opcodes[i].opcode_seed))
break;
+ if (i == NOPCODES)
+ {
+ /* Maybe it is 9 to 16 bits big. */
+ FETCH_DATA (info, buffer + 2);
+ first_word = read_memory_integer(buffer, 2);
+
+ for (i = 0; i < NOPCODES; i++)
+ if ((first_word
+ & (((unsigned long) 1 << ns32k_opcodes[i].opcode_id_size) - 1))
+ == ns32k_opcodes[i].opcode_seed)
+ break;
+
+ /* Handle undefined instructions. */
+ if (i == NOPCODES)
+ {
+ (*dis_info->fprintf_func)(dis_info->stream, "0%o", buffer[0]);
+ return 1;
+ }
}
- return Ivalue;
-}
-\f
-#if 1 /* a version that should work on ns32k f's&d's on any machine */
-static int
-invalid_float (p, len)
- register char *p;
- register int len;
-{
- register int val;
-
- if ( len == 4 )
- val = (bit_extract_simple(p, 23, 8)/*exponent*/ == 0xff
- || (bit_extract_simple(p, 23, 8)/*exponent*/ == 0 &&
- bit_extract_simple(p, 0, 23)/*mantisa*/ != 0));
- else if ( len == 8 )
- val = (bit_extract_simple(p, 52, 11)/*exponent*/ == 0x7ff
- || (bit_extract_simple(p, 52, 11)/*exponent*/ == 0
- && (bit_extract_simple(p, 0, 32)/*low mantisa*/ != 0
- || bit_extract_simple(p, 32, 20)/*high mantisa*/ != 0)));
- else
- val = 1;
- return (val);
-}
-#else
+ (*dis_info->fprintf_func)(dis_info->stream, "%s", ns32k_opcodes[i].name);
-/* assumes the bytes have been swapped to local order */
-typedef union { double d;
- float f;
- struct { unsigned m:23, e:8, :1;} sf;
- struct { unsigned lm; unsigned m:20, e:11, :1;} sd;
- } float_type_u;
+ ioffset = ns32k_opcodes[i].opcode_size;
+ aoffset = ns32k_opcodes[i].opcode_size;
+ d = ns32k_opcodes[i].operands;
-static int
-invalid_float (p, len)
- register float_type_u *p;
- register int len;
-{
- register int val;
- if ( len == sizeof (float) )
- val = (p->sf.e == 0xff
- || (p->sf.e == 0 && p->sf.m != 0));
- else if ( len == sizeof (double) )
- val = (p->sd.e == 0x7ff
- || (p->sd.e == 0 && (p->sd.m != 0 || p->sd.lm != 0)));
- else
- val = 1;
- return (val);
+ if (*d)
+ {
+ /* Offset in bits of the first thing beyond each index byte.
+ Element 0 is for operand A and element 1 is for operand B. */
+ int index_offset[2];
+
+ /* 0 for operand A, 1 for operand B, greater for other args. */
+ int whicharg = 0;
+
+ (*dis_info->fprintf_func)(dis_info->stream, "\t");
+
+ maxarg = 0;
+
+ /* First we have to find and keep track of the index bytes,
+ if we are using scaled indexed addressing mode, since the index
+ bytes occur right after the basic instruction, not as part
+ of the addressing extension. */
+ index_offset[0] = -1;
+ index_offset[1] = -1;
+ if (Is_gen (d[1]))
+ {
+ int bitoff = d[1] == 'f' ? 10 : 5;
+ int addr_mode = bit_extract (buffer, ioffset - bitoff, 5);
+
+ if (Adrmod_is_index (addr_mode))
+ {
+ aoffset += 8;
+ index_offset[0] = aoffset;
+ }
+ }
+
+ if (d[2] && Is_gen (d[3]))
+ {
+ int addr_mode = bit_extract (buffer, ioffset - 10, 5);
+
+ if (Adrmod_is_index (addr_mode))
+ {
+ aoffset += 8;
+ index_offset[1] = aoffset;
+ }
+ }
+
+ while (*d)
+ {
+ argnum = *d - '1';
+ if (argnum >= MAX_ARGS)
+ abort ();
+ d++;
+ if (argnum > maxarg)
+ maxarg = argnum;
+ ioffset = print_insn_arg (*d, ioffset, &aoffset, buffer,
+ memaddr, arg_bufs[argnum],
+ whicharg > 1 ? -1 : index_offset[whicharg]);
+ d++;
+ whicharg++;
+ }
+
+ for (argnum = 0; argnum <= maxarg; argnum++)
+ {
+ bfd_vma addr;
+ char *ch;
+
+ for (ch = arg_bufs[argnum]; *ch;)
+ {
+ if (*ch == NEXT_IS_ADDR)
+ {
+ ++ch;
+ addr = bfd_scan_vma (ch, NULL, 16);
+ (*dis_info->print_address_func) (addr, dis_info);
+ while (*ch && *ch != NEXT_IS_ADDR)
+ ++ch;
+ if (*ch)
+ ++ch;
+ }
+ else
+ (*dis_info->fprintf_func)(dis_info->stream, "%c", *ch++);
+ }
+ if (argnum < maxarg)
+ (*dis_info->fprintf_func)(dis_info->stream, ", ");
+ }
+ }
+ return aoffset / 8;
}
-#endif
projects / deliverable / binutils-gdb.git / blobdiff