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authorPer Bothner <per@bothner.com>1993-03-19 00:12:50 +0000
committerPer Bothner <per@bothner.com>1993-03-19 00:12:50 +0000
commit2e8adbd7f459067936857adc9fbefe9a2982e5d7 (patch)
treed7f6e9e5e097d404f336ed25a1223948a9b2301b /binutils/m68k-pinsn.c
parentc840244e232b52120ceff2ba44f291897b82a706 (diff)
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* m68k-pinsn.c: Removed. Subsumed by ../opcodes/m68k-dis.c.
* i386-pinsn.c: Removed. Subsumed by ../opcodes/i386-dis.c. * Makefile.in: Adjust accordingly. * objdump.c: Support new-style disassemblers (ones that use the interface of ../include/dis-asm.h).
Diffstat (limited to 'binutils/m68k-pinsn.c')
-rw-r--r--binutils/m68k-pinsn.c841
1 files changed, 0 insertions, 841 deletions
diff --git a/binutils/m68k-pinsn.c b/binutils/m68k-pinsn.c
deleted file mode 100644
index 2027b25..0000000
--- a/binutils/m68k-pinsn.c
+++ /dev/null
@@ -1,841 +0,0 @@
-/* Print m68k instructions for objdump
- Copyright (C) 1986, 1987, 1989, 1991 Free Software Foundation, Inc.
-
-
-This file is part of the binutils.
-
-The binutils are 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.
-
-The binutils are distributed in the hope that they 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 the binutils; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-
-#include "bfd.h"
-#include "sysdep.h"
-#include <stdio.h>
-#include "opcode/m68k.h"
-
-#ifndef GDB
-#define fprintf_filtered fprintf
-#define fputs_filtered fputs
-#endif
-
-/* Sign-extend an (unsigned char). */
-#if __STDC__ == 1
-#define COERCE_SIGNED_CHAR(ch) ((signed char)(ch))
-#else
-#define COERCE_SIGNED_CHAR(ch) ((int)(((ch) ^ 0x80) & 0xFF) - 128)
-#endif
-
-extern void print_address();
-
-/* 68k instructions are never longer than this many bytes. */
-#define MAXLEN 22
-
-/* Number of elements in the opcode table. */
-#define NOPCODES (sizeof m68k_opcodes / sizeof m68k_opcodes[0])
-
-extern char *reg_names[];
-char *fpcr_names[] = { "", "fpiar", "fpsr", "fpiar/fpsr", "fpcr",
- "fpiar/fpcr", "fpsr/fpcr", "fpiar/fpsr/fpcr"};
-
-char *reg_names[] = {"d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7", "a0", "a1", "a2", "a3", "a4", "a5", "fp", "sp", "ps", "pc"};
-static unsigned char *print_insn_arg ();
-static unsigned char *print_indexed ();
-static void print_base ();
-static int fetch_arg ();
-
-#define NEXTBYTE(p) (p += 2, COERCE_SIGNED_CHAR(p[-1]))
-
-#define NEXTWORD(p) \
- (p += 2, ((((char *)p)[-2]) << 8) + p[-1])
-
-#define NEXTLONG(p) \
- (p += 4, (((((p[-4] << 8) + p[-3]) << 8) + p[-2]) << 8) + p[-1])
-
-/* NEXTSINGLE and NEXTDOUBLE handle alignment problems, but not
- * byte-swapping or other float format differences. FIXME! */
-
-union number {
- double d;
- float f;
- char c[10];
-};
-
-#define NEXTSINGLE(val, p) \
- { int i; union number u;\
- for (i = 0; i < sizeof(float); i++) u.c[i] = *p++; \
- val = u.f; }
-
-#define NEXTDOUBLE(val, p) \
- { int i; union number u;\
- for (i = 0; i < sizeof(double); i++) u.c[i] = *p++; \
- val = u.d; }
-
-#define NEXTEXTEND(p) \
- (p += 12, 0.0) /* Need a function to convert from extended to double
- precision... */
-
-#define NEXTPACKED(p) \
- (p += 12, 0.0) /* Need a function to convert from packed to double
- precision. Actually, it's easier to print a
- packed number than a double anyway, so maybe
- there should be a special case to handle this... */
-
-/* Print the m68k instruction at address MEMADDR in debugged memory,
- on STREAM. Returns length of the instruction, in bytes. */
-
-int
-print_insn_m68k(addr, buffer, stream)
- bfd_vma addr;
-unsigned char *buffer;
- FILE *stream;
-{
- register unsigned int i;
- register unsigned char *p;
- register char *d;
- register unsigned int bestmask;
- int best;
-
-
-
- bestmask = 0;
- best = -1;
- for (i = 0; i < NOPCODES; i++)
- {
- register unsigned int opcode = m68k_opcodes[i].opcode;
- register unsigned int match = m68k_opcodes[i].match;
- if (((0xff & buffer[0] & (match >> 24)) == (0xff & (opcode >> 24)))
- && ((0xff & buffer[1] & (match >> 16)) == (0xff & (opcode >> 16)))
- && ((0xff & buffer[2] & (match >> 8)) == (0xff & (opcode >> 8)))
- && ((0xff & buffer[3] & match) == (0xff & opcode)))
- {
- /* Don't use for printout the variants of divul and divsl
- that have the same register number in two places.
- The more general variants will match instead. */
- for (d = m68k_opcodes[i].args; *d; d += 2)
- if (d[1] == 'D')
- break;
-
- /* Don't use for printout the variants of most floating
- point coprocessor instructions which use the same
- register number in two places, as above. */
- if (*d == 0)
- for (d = m68k_opcodes[i].args; *d; d += 2)
- if (d[1] == 't')
- break;
-
- if (*d == 0 && match > bestmask)
- {
- best = i;
- bestmask = match;
- }
- }
- }
-
- /* Handle undefined instructions. */
- if (best < 0)
- {
- fprintf_filtered (stream, "0%o", (unsigned) (buffer[0] << 8) + buffer[1]);
- return 2;
- }
-
- fprintf_filtered (stream, "%s", m68k_opcodes[best].name);
-
- /* Point at first word of argument data,
- and at descriptor for first argument. */
- p = buffer + 2;
-
- /* Why do this this way? -MelloN */
- for (d = m68k_opcodes[best].args; *d; d += 2)
- {
- if (d[0] == '#')
- {
- if (d[1] == 'l' && p - buffer < 6)
- p = buffer + 6;
- else if (p - buffer < 4 && d[1] != 'C' && d[1] != '8' )
- p = buffer + 4;
- }
- if (d[1] >= '1' && d[1] <= '3' && p - buffer < 4)
- p = buffer + 4;
- if (d[1] >= '4' && d[1] <= '6' && p - buffer < 6)
- p = buffer + 6;
- if ((d[0] == 'L' || d[0] == 'l') && d[1] == 'w' && p - buffer < 4)
- p = buffer + 4;
- }
-
- d = m68k_opcodes[best].args;
-
- if (*d)
- fputs_filtered (" ", stream);
-
- while (*d)
- {
- p = print_insn_arg (d, buffer, p, addr + p - buffer, stream);
- d += 2;
- if (*d && *(d - 2) != 'I' && *d != 'k')
- fputs_filtered (",", stream);
- }
- return p - buffer;
-}
-
-static unsigned char *
-print_insn_arg (d, buffer, p, addr, stream)
- char *d;
- unsigned char *buffer;
- register unsigned char *p;
- bfd_vma addr; /* PC for this arg to be relative to */
- FILE *stream;
-{
- register int val = 0;
- register int place = d[1];
- int regno;
- register char *regname;
- register unsigned char *p1;
- register double flval = 0;
- int flt_p;
-
- switch (*d)
- {
- case 'c': /* cache identifier */
- {
- static char *cacheFieldName[] = { "NOP", "dc", "ic", "bc" };
- val = fetch_arg (buffer, place, 2);
- fprintf_filtered (stream, cacheFieldName[val]);
- break;
- }
-
- case 'a': /* address register indirect only. Cf. case '+'. */
- {
- fprintf_filtered (stream,
- "%s@",
- reg_names [fetch_arg (buffer, place, 3) + 8]);
- break;
- }
-
- case '_': /* 32-bit absolute address for move16. */
- {
- val = NEXTLONG (p);
- fprintf_filtered (stream, "@#");
- print_address (val, stream);
- break;
- }
-
- case 'C':
- fprintf_filtered (stream, "ccr");
- break;
-
- case 'S':
- fprintf_filtered (stream, "sr");
- break;
-
- case 'U':
- fprintf_filtered (stream, "usp");
- break;
-
- case 'J':
- {
- static struct { char *name; int value; } names[]
- = {{"sfc", 0x000}, {"dfc", 0x001}, {"cacr", 0x002},
- {"tc", 0x003}, {"itt0",0x004}, {"itt1", 0x005},
- {"dtt0",0x006}, {"dtt1",0x007},
- {"usp", 0x800}, {"vbr", 0x801}, {"caar", 0x802},
- {"msp", 0x803}, {"isp", 0x804}, {"mmusr",0x805},
- {"urp", 0x806}, {"srp", 0x807}};
-
- val = fetch_arg (buffer, place, 12);
- for (regno = sizeof names / sizeof names[0] - 1; regno >= 0; regno--)
- if (names[regno].value == val)
- {
- fprintf_filtered (stream, names[regno].name);
- break;
- }
- if (regno < 0)
- fprintf_filtered (stream, "%d", val);
- }
- break;
-
- case 'Q':
- val = fetch_arg (buffer, place, 3);
- /* 0 means 8, except for the bkpt instruction... */
- if (val == 0 && d[1] != 's')
- val = 8;
- fprintf_filtered (stream, "#%d", val);
- break;
-
- case 'M':
- val = fetch_arg (buffer, place, 8);
- if (val & 0x80)
- val = val - 0x100;
- fprintf_filtered (stream, "#%d", val);
- break;
-
- case 'T':
- val = fetch_arg (buffer, place, 4);
- fprintf_filtered (stream, "#%d", val);
- break;
-
- case 'D':
- fprintf_filtered (stream, "%s", reg_names[fetch_arg (buffer, place, 3)]);
- break;
-
- case 'A':
- fprintf_filtered (stream, "%s",
- reg_names[fetch_arg (buffer, place, 3) + 010]);
- break;
-
- case 'R':
- fprintf_filtered (stream, "%s", reg_names[fetch_arg (buffer, place, 4)]);
- break;
-
- case 'r':
- fprintf_filtered (stream, "%s@", reg_names[fetch_arg (buffer, place, 4)]);
- break;
-
- case 'F':
- fprintf_filtered (stream, "fp%d", fetch_arg (buffer, place, 3));
- break;
-
- case 'O':
- val = fetch_arg (buffer, place, 6);
- if (val & 0x20)
- fprintf_filtered (stream, "%s", reg_names [val & 7]);
- else
- fprintf_filtered (stream, "%d", val);
- break;
-
- case '+':
- fprintf_filtered (stream, "%s@+",
- reg_names[fetch_arg (buffer, place, 3) + 8]);
- break;
-
- case '-':
- fprintf_filtered (stream, "%s@-",
- reg_names[fetch_arg (buffer, place, 3) + 8]);
- break;
-
- case 'k':
- if (place == 'k')
- fprintf_filtered (stream, "{%s}", reg_names[fetch_arg (buffer, place, 3)]);
- else if (place == 'C')
- {
- val = fetch_arg (buffer, place, 7);
- if ( val > 63 ) /* This is a signed constant. */
- val -= 128;
- fprintf_filtered (stream, "{#%d}", val);
- }
- else
- fprintf_filtered(stderr, "Invalid arg format in opcode table: \"%c%c\".",
- *d, place);
- break;
-
- case '#':
- case '^':
- p1 = buffer + (*d == '#' ? 2 : 4);
- if (place == 's')
- val = fetch_arg (buffer, place, 4);
- else if (place == 'C')
- val = fetch_arg (buffer, place, 7);
- else if (place == '8')
- val = fetch_arg (buffer, place, 3);
- else if (place == '3')
- val = fetch_arg (buffer, place, 8);
- else if (place == 'b')
- val = NEXTBYTE (p1);
- else if (place == 'w')
- val = NEXTWORD (p1);
- else if (place == 'l')
- val = NEXTLONG (p1);
- else
- fprintf_filtered(stderr, "Invalid arg format in opcode table: \"%c%c\".",
- *d, place);
- fprintf_filtered (stream, "#%d", val);
- break;
-
- case 'B':
- if (place == 'b')
- val = NEXTBYTE (p);
- else if (place == 'B')
- val = COERCE_SIGNED_CHAR(buffer[1]);
- else if (place == 'w' || place == 'W')
- val = NEXTWORD (p);
- else if (place == 'l' || place == 'L')
- val = NEXTLONG (p);
- else if (place == 'g')
- {
- val = ((char *)buffer)[1];
- if (val == 0)
- val = NEXTWORD (p);
- else if (val == -1)
- val = NEXTLONG (p);
- }
- else if (place == 'c')
- {
- if (buffer[1] & 0x40) /* If bit six is one, long offset */
- val = NEXTLONG (p);
- else
- val = NEXTWORD (p);
- }
- else
- fprintf_filtered(stderr, "Invalid arg format in opcode table: \"%c%c\".",
- *d, place);
- print_address (addr + val, stream);
- break;
-
- case 'd':
- val = NEXTWORD (p);
- fprintf_filtered (stream, "%s@(%d)",
- reg_names[fetch_arg (buffer, place, 3)], val);
- break;
-
- case 's':
- fprintf_filtered (stream, "%s",
- fpcr_names[fetch_arg (buffer, place, 3)]);
- break;
-
- case 'I':
- val = fetch_arg (buffer, 'd', 3); /* Get coprocessor ID... */
- if (val != 1) /* Unusual coprocessor ID? */
- fprintf_filtered (stream, "(cpid=%d) ", val);
- if (place == 'i')
- p += 2; /* Skip coprocessor extended operands */
- break;
-
- case '*':
- case '~':
- case '%':
- case ';':
- case '@':
- case '!':
- case '$':
- case '?':
- case '/':
- case '&':
- case '`':
-
- if (place == 'd')
- {
- val = fetch_arg (buffer, 'x', 6);
- val = ((val & 7) << 3) + ((val >> 3) & 7);
- }
- else
- val = fetch_arg (buffer, 's', 6);
-
- /* Get register number assuming address register. */
- regno = (val & 7) + 8;
- regname = reg_names[regno];
- switch (val >> 3)
- {
- case 0:
- fprintf_filtered (stream, "%s", reg_names[val]);
- break;
-
- case 1:
- fprintf_filtered (stream, "%s", regname);
- break;
-
- case 2:
- fprintf_filtered (stream, "%s@", regname);
- break;
-
- case 3:
- fprintf_filtered (stream, "%s@+", regname);
- break;
-
- case 4:
- fprintf_filtered (stream, "%s@-", regname);
- break;
-
- case 5:
- val = NEXTWORD (p);
- fprintf_filtered (stream, "%s@(%d)", regname, val);
- break;
-
- case 6:
- p = print_indexed (regno, p, addr, stream);
- break;
-
- case 7:
- switch (val & 7)
- {
- case 0:
- val = NEXTWORD (p);
- fprintf_filtered (stream, "@#");
- print_address (val, stream);
- break;
-
- case 1:
- val = NEXTLONG (p);
- fprintf_filtered (stream, "@#");
- print_address (val, stream);
- break;
-
- case 2:
- val = NEXTWORD (p);
- print_address (addr + val, stream);
- break;
-
- case 3:
- p = print_indexed (-1, p, addr, stream);
- break;
-
- case 4:
- flt_p = 1; /* Assume it's a float... */
- switch( place )
- {
- case 'b':
- val = NEXTBYTE (p);
- flt_p = 0;
- break;
-
- case 'w':
- val = NEXTWORD (p);
- flt_p = 0;
- break;
-
- case 'l':
- val = NEXTLONG (p);
- flt_p = 0;
- break;
-
- case 'f':
- NEXTSINGLE(flval, p);
- break;
-
- case 'F':
- NEXTDOUBLE(flval, p);
- break;
-
- case 'x':
- flval = NEXTEXTEND(p);
- break;
-
- case 'p':
- flval = NEXTPACKED(p);
- break;
-
- default:
- fprintf_filtered(stderr, "Invalid arg format in opcode table: \"%c%c\".",
- *d, place);
- }
- if ( flt_p ) /* Print a float? */
- fprintf_filtered (stream, "#%g", flval);
- else
- fprintf_filtered (stream, "#%d", val);
- break;
-
- default:
- fprintf_filtered (stream, "<invalid address mode 0%o>", (unsigned) val);
- }
- }
- break;
-
- case 'L':
- case 'l':
- if (place == 'w')
- {
- char doneany;
- p1 = buffer + 2;
- val = NEXTWORD (p1);
- /* Move the pointer ahead if this point is farther ahead
- than the last. */
- p = p1 > p ? p1 : p;
- if (val == 0)
- {
- fputs_filtered ("#0", stream);
- break;
- }
- if (*d == 'l')
- {
- register int newval = 0;
- for (regno = 0; regno < 16; ++regno)
- if (val & (0x8000 >> regno))
- newval |= 1 << regno;
- val = newval;
- }
- val &= 0xffff;
- doneany = 0;
- for (regno = 0; regno < 16; ++regno)
- if (val & (1 << regno))
- {
- int first_regno;
- if (doneany)
- fputs_filtered ("/", stream);
- doneany = 1;
- fprintf_filtered (stream, "%s", reg_names[regno]);
- first_regno = regno;
- while (val & (1 << (regno + 1)))
- ++regno;
- if (regno > first_regno)
- fprintf_filtered (stream, "-%s", reg_names[regno]);
- }
- }
- else if (place == '3')
- {
- /* `fmovem' insn. */
- char doneany;
- val = fetch_arg (buffer, place, 8);
- if (val == 0)
- {
- fputs_filtered ("#0", stream);
- break;
- }
- if (*d == 'l')
- {
- register int newval = 0;
- for (regno = 0; regno < 8; ++regno)
- if (val & (0x80 >> regno))
- newval |= 1 << regno;
- val = newval;
- }
- val &= 0xff;
- doneany = 0;
- for (regno = 0; regno < 8; ++regno)
- if (val & (1 << regno))
- {
- int first_regno;
- if (doneany)
- fputs_filtered ("/", stream);
- doneany = 1;
- fprintf_filtered (stream, "fp%d", regno);
- first_regno = regno;
- while (val & (1 << (regno + 1)))
- ++regno;
- if (regno > first_regno)
- fprintf_filtered (stream, "-fp%d", regno);
- }
- }
- else
- goto de_fault;
- break;
-
- default: de_fault:
- fprintf_filtered(stderr, "Invalid arg format in opcode table: \"%c\".", *d);
- }
-
- return (unsigned char *) p;
-}
-
-/* Fetch BITS bits from a position in the instruction specified by CODE.
- CODE is a "place to put an argument", or 'x' for a destination
- that is a general address (mode and register).
- BUFFER contains the instruction. */
-
-static int
-fetch_arg (buffer, code, bits)
- unsigned char *buffer;
- char code;
- int bits;
-{
- register int val = 0;
- switch (code)
- {
- case 's':
- val = buffer[1];
- break;
-
- case 'd': /* Destination, for register or quick. */
- val = (buffer[0] << 8) + buffer[1];
- val >>= 9;
- break;
-
- case 'x': /* Destination, for general arg */
- val = (buffer[0] << 8) + buffer[1];
- val >>= 6;
- break;
-
- case 'k':
- val = (buffer[3] >> 4);
- break;
-
- case 'C':
- val = buffer[3];
- break;
-
- case '1':
- val = (buffer[2] << 8) + buffer[3];
- val >>= 12;
- break;
-
- case '2':
- val = (buffer[2] << 8) + buffer[3];
- val >>= 6;
- break;
-
- case '3':
- case 'j':
- val = (buffer[2] << 8) + buffer[3];
- break;
-
- case '4':
- val = (buffer[4] << 8) + buffer[5];
- val >>= 12;
- break;
-
- case '5':
- val = (buffer[4] << 8) + buffer[5];
- val >>= 6;
- break;
-
- case '6':
- val = (buffer[4] << 8) + buffer[5];
- break;
-
- case '7':
- val = (buffer[2] << 8) + buffer[3];
- val >>= 7;
- break;
-
- case '8':
- val = (buffer[2] << 8) + buffer[3];
- val >>= 10;
- break;
-
- case 'e':
- val = (buffer[1] >> 6);
- break;
-
- default:
- abort ();
- }
-
- switch (bits)
- {
- case 2:
- return val & 3;
- case 3:
- return val & 7;
- case 4:
- return val & 017;
- case 5:
- return val & 037;
- case 6:
- return val & 077;
- case 7:
- return val & 0177;
- case 8:
- return val & 0377;
- case 12:
- return val & 07777;
- default:
- abort ();
- return(0);
- }
-} /* fetch_arg() */
-
-/* Print an indexed argument. The base register is BASEREG (-1 for pc).
- P points to extension word, in buffer.
- ADDR is the nominal core address of that extension word. */
-
-static unsigned char *
-print_indexed (basereg, p, addr, stream)
- int basereg;
- unsigned char *p;
- FILE *stream;
-bfd_vma addr;
-{
- register int word;
- static char *scales[] = {"", "*2", "*4", "*8"};
- register int base_disp;
- register int outer_disp;
- char buf[40];
-
- word = NEXTWORD (p);
-
- /* Generate the text for the index register.
- Where this will be output is not yet determined. */
- sprintf (buf, "[%s.%c%s]",
- reg_names[(word >> 12) & 0xf],
- (word & 0x800) ? 'l' : 'w',
- scales[(word >> 9) & 3]);
-
- /* Handle the 68000 style of indexing. */
-
- if ((word & 0x100) == 0)
- {
- print_base (basereg,
- ((word & 0x80) ? word | 0xff00 : word & 0xff)
- + ((basereg == -1) ? addr : 0),
- stream);
- fputs_filtered (buf, stream);
- return p;
- }
-
- /* Handle the generalized kind. */
- /* First, compute the displacement to add to the base register. */
-
- if (word & 0200)
- basereg = -2;
- if (word & 0100)
- buf[0] = 0;
- base_disp = 0;
- switch ((word >> 4) & 3)
- {
- case 2:
- base_disp = NEXTWORD (p);
- break;
- case 3:
- base_disp = NEXTLONG (p);
- }
- if (basereg == -1)
- base_disp += addr;
-
- /* Handle single-level case (not indirect) */
-
- if ((word & 7) == 0)
- {
- print_base (basereg, base_disp, stream);
- fputs_filtered (buf, stream);
- return p;
- }
-
- /* Two level. Compute displacement to add after indirection. */
-
- outer_disp = 0;
- switch (word & 3)
- {
- case 2:
- outer_disp = NEXTWORD (p);
- break;
- case 3:
- outer_disp = NEXTLONG (p);
- }
-
- fprintf_filtered (stream, "%d(", outer_disp);
- print_base (basereg, base_disp, stream);
-
- /* If postindexed, print the closeparen before the index. */
- if (word & 4)
- fprintf_filtered (stream, ")%s", buf);
- /* If preindexed, print the closeparen after the index. */
- else
- fprintf_filtered (stream, "%s)", buf);
-
- return p;
-}
-
-/* Print a base register REGNO and displacement DISP, on STREAM.
- REGNO = -1 for pc, -2 for none (suppressed). */
-
-static void
-print_base (regno, disp, stream)
- int regno;
- int disp;
- FILE *stream;
-{
- if (regno == -2)
- fprintf_filtered (stream, "%d", disp);
- else if (regno == -1)
- fprintf_filtered (stream, "0x%x", (unsigned) disp);
- else
- fprintf_filtered (stream, "%d(%s)", disp, reg_names[regno]);
-}