/* Print Motorola 68k instructions.
- Copyright 1986, 87, 89, 91, 92, 93, 94, 95, 96, 1997
+ Copyright 1986, 87, 89, 91, 92, 93, 94, 95, 96, 97, 98, 99, 2000
Free Software Foundation, Inc.
This file is free software; you can redistribute it and/or modify
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+#include "sysdep.h"
#include "dis-asm.h"
#include "floatformat.h"
#include <libiberty.h>
+#include "opintl.h"
#include "opcode/m68k.h"
/* Local function prototypes */
+static int
+fetch_data PARAMS ((struct disassemble_info *, bfd_byte *));
+
+static void
+dummy_print_address PARAMS ((bfd_vma, struct disassemble_info *));
+
static int
fetch_arg PARAMS ((unsigned char *, int, int, disassemble_info *));
COERCE16 ((p[-2] << 8) + p[-1]))
/* Get a 4 byte signed integer. */
-#define COERCE32(x) ((int) (((x) ^ 0x80000000) - 0x80000000))
+#define COERCE32(x) ((bfd_signed_vma) ((x) ^ 0x80000000) - 0x80000000)
#define NEXTLONG(p) \
(p += 4, FETCH_DATA (info, p), \
(COERCE32 ((((((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];
-};
+/* Get a 4 byte unsigned integer. */
+#define NEXTULONG(p) \
+ (p += 4, FETCH_DATA (info, p), \
+ (unsigned int) ((((((p[-4] << 8) + p[-3]) << 8) + p[-2]) << 8) + p[-1]))
+/* Get a single precision float. */
#define NEXTSINGLE(val, p) \
- { unsigned int i; union number u;\
- FETCH_DATA (info, p + sizeof (float));\
- for (i = 0; i < sizeof(float); i++) u.c[i] = *p++; \
- val = u.f; }
+ (p += 4, FETCH_DATA (info, p), \
+ floatformat_to_double (&floatformat_ieee_single_big, (char *) p - 4, &val))
+/* Get a double precision float. */
#define NEXTDOUBLE(val, p) \
- { unsigned int i; union number u;\
- FETCH_DATA (info, p + sizeof (double));\
- for (i = 0; i < sizeof(double); i++) u.c[i] = *p++; \
- val = u.d; }
+ (p += 8, FETCH_DATA (info, p), \
+ floatformat_to_double (&floatformat_ieee_double_big, (char *) p - 8, &val))
-/* Need a function to convert from extended to double precision... */
-#define NEXTEXTEND(p) \
- (p += 12, FETCH_DATA (info, p), 0.0)
+/* Get an extended precision float. */
+#define NEXTEXTEND(val, p) \
+ (p += 12, FETCH_DATA (info, p), \
+ floatformat_to_double (&floatformat_m68881_ext, (char *) p - 12, &val))
/* Need a function to convert from packed to double
precision. Actually, it's easier to print a
/* This function is used to print to the bit-bucket. */
static int
#ifdef __STDC__
-dummy_printer (FILE * file, const char * format, ...)
+dummy_printer (FILE * file ATTRIBUTE_UNUSED,
+ const char * format ATTRIBUTE_UNUSED, ...)
#else
-dummy_printer (file) FILE *file;
+dummy_printer (file) FILE *file ATTRIBUTE_UNUSED;
#endif
{ return 0; }
-void
+static void
dummy_print_address (vma, info)
- bfd_vma vma;
- struct disassemble_info *info;
+ bfd_vma vma ATTRIBUTE_UNUSED;
+ struct disassemble_info *info ATTRIBUTE_UNUSED;
{
}
register const char *d;
register unsigned long bestmask;
const struct m68k_opcode *best = 0;
+ unsigned int arch_mask;
struct private priv;
bfd_byte *buffer = priv.the_buffer;
fprintf_ftype save_printer = info->fprintf_func;
}
info->private_data = (PTR) &priv;
+ /* Tell objdump to use two bytes per chunk and six bytes per line for
+ displaying raw data. */
+ info->bytes_per_chunk = 2;
+ info->bytes_per_line = 6;
+ info->display_endian = BFD_ENDIAN_BIG;
priv.max_fetched = priv.the_buffer;
priv.insn_start = memaddr;
if (setjmp (priv.bailout) != 0)
/* Error return. */
return -1;
+ switch (info->mach)
+ {
+ default:
+ case 0:
+ arch_mask = (unsigned int) -1;
+ break;
+ case bfd_mach_m68000:
+ arch_mask = m68000;
+ break;
+ case bfd_mach_m68008:
+ arch_mask = m68008;
+ break;
+ case bfd_mach_m68010:
+ arch_mask = m68010;
+ break;
+ case bfd_mach_m68020:
+ arch_mask = m68020;
+ break;
+ case bfd_mach_m68030:
+ arch_mask = m68030;
+ break;
+ case bfd_mach_m68040:
+ arch_mask = m68040;
+ break;
+ case bfd_mach_m68060:
+ arch_mask = m68060;
+ break;
+ }
+
+ arch_mask |= m68881 | m68851;
+
bestmask = 0;
FETCH_DATA (info, buffer + 2);
major_opcode = (buffer[0] >> 4) & 15;
(FETCH_DATA (info, buffer + 4)
&& ((0xff & buffer[2] & (match >> 8)) == (0xff & (opcode >> 8)))
&& ((0xff & buffer[3] & match) == (0xff & opcode)))
- ))
+ )
+ && (opc->arch & arch_mask) != 0)
{
/* Don't use for printout the variants of divul and divsl
that have the same register number in two places.
break;
}
}
- /* Some opcodes like pflusha and lpstop are exceptions; they take no
- arguments but are two words long. Recognize them by looking at
- the lower 16 bits of the mask. */
+
+ /* pflusha is an exceptions. It takes no arguments but is two words
+ long. Recognize it by looking at the lower 16 bits of the mask. */
if (p - buffer < 4 && (best->match & 0xFFFF) != 0)
p = buffer + 4;
-
+
+ /* lpstop is another exception. It takes a one word argument but is
+ three words long. */
+ if (p - buffer < 6
+ && (best->match & 0xffff) == 0xffff
+ && best->args[0] == '#'
+ && best->args[1] == 'w')
+ {
+ /* Copy the one word argument into the usual location for a one
+ word argument, to simplify printing it. We can get away with
+ this because we know exactly what the second word is, and we
+ aren't going to print anything based on it. */
+ p = buffer + 6;
+ FETCH_DATA (info, p);
+ buffer[2] = buffer[4];
+ buffer[3] = buffer[5];
+ }
+
FETCH_DATA (info, p);
d = best->args;
info->fprintf_func = (fprintf_ftype)dummy_printer;
for ( ; *d; d += 2)
{
- int eaten = print_insn_arg (d, buffer, p, memaddr + p - buffer, info);
+ int eaten = print_insn_arg (d, buffer, p, memaddr + (p - buffer), info);
if (eaten >= 0)
p += eaten;
else if (eaten == -1)
else
{
(*info->fprintf_func)(info->stream,
- "<internal error in opcode table: %s %s>\n",
+ /* xgettext:c-format */
+ _("<internal error in opcode table: %s %s>\n"),
best->name,
best->args);
goto invalid;
while (*d)
{
- p += print_insn_arg (d, buffer, p, memaddr + p - buffer, info);
+ p += print_insn_arg (d, buffer, p, memaddr + (p - buffer), info);
d += 2;
if (*d && *(d - 2) != 'I' && *d != 'k')
(*info->fprintf_func) (info->stream, ",");
register unsigned char *p1;
double flval;
int flt_p;
+ bfd_signed_vma disp;
+ unsigned int uval;
switch (*d)
{
case '_': /* 32-bit absolute address for move16. */
{
- val = NEXTLONG (p);
- (*info->print_address_func) (val, info);
+ uval = NEXTULONG (p);
+ (*info->print_address_func) (uval, info);
break;
}
(*info->fprintf_func) (info->stream, "%%usp");
break;
+ case 'E':
+ (*info->fprintf_func) (info->stream, "%%acc");
+ break;
+
+ case 'G':
+ (*info->fprintf_func) (info->stream, "%%macsr");
+ break;
+
+ case 'H':
+ (*info->fprintf_func) (info->stream, "%%mask");
+ break;
+
case 'J':
{
static const struct { char *name; int value; } names[]
{"%tc", 0x003}, {"%itt0",0x004}, {"%itt1", 0x005},
{"%dtt0",0x006}, {"%dtt1",0x007}, {"%buscr",0x008},
{"%usp", 0x800}, {"%vbr", 0x801}, {"%caar", 0x802},
- {"%msp", 0x803}, {"%ibsp", 0x804},
+ {"%msp", 0x803}, {"%isp", 0x804},
/* Should we be calling this psr like we do in case 'Y'? */
{"%mmusr",0x805},
break;
case 'M':
- val = fetch_arg (buffer, place, 8, info);
- if (val & 0x80)
- val = val - 0x100;
- (*info->fprintf_func) (info->stream, "#%d", val);
+ if (place == 'h')
+ {
+ static char *const scalefactor_name[] = { "<<", ">>" };
+ val = fetch_arg (buffer, place, 1, info);
+ (*info->fprintf_func) (info->stream, scalefactor_name[val]);
+ }
+ else
+ {
+ val = fetch_arg (buffer, place, 8, info);
+ if (val & 0x80)
+ val = val - 0x100;
+ (*info->fprintf_func) (info->stream, "#%d", val);
+ }
break;
case 'T':
case 'B':
if (place == 'b')
- val = NEXTBYTE (p);
+ disp = NEXTBYTE (p);
else if (place == 'B')
- val = COERCE_SIGNED_CHAR(buffer[1]);
+ disp = COERCE_SIGNED_CHAR(buffer[1]);
else if (place == 'w' || place == 'W')
- val = NEXTWORD (p);
+ disp = NEXTWORD (p);
else if (place == 'l' || place == 'L' || place == 'C')
- val = NEXTLONG (p);
+ disp = NEXTLONG (p);
else if (place == 'g')
{
- val = NEXTBYTE (buffer);
- if (val == 0)
- val = NEXTWORD (p);
- else if (val == -1)
- val = NEXTLONG (p);
+ disp = NEXTBYTE (buffer);
+ if (disp == 0)
+ disp = NEXTWORD (p);
+ else if (disp == -1)
+ disp = NEXTLONG (p);
}
else if (place == 'c')
{
if (buffer[1] & 0x40) /* If bit six is one, long offset */
- val = NEXTLONG (p);
+ disp = NEXTLONG (p);
else
- val = NEXTWORD (p);
+ disp = NEXTWORD (p);
}
else
return -2;
- (*info->print_address_func) (addr + val, info);
+ (*info->print_address_func) (addr + disp, info);
break;
case 'd':
val = NEXTWORD (p);
(*info->fprintf_func)
(info->stream, "%s@(%d)",
- reg_names[fetch_arg (buffer, place, 3, info)], val);
+ reg_names[fetch_arg (buffer, place, 3, info) + 8], val);
break;
case 's':
case '?':
case '/':
case '&':
- case '`':
case '|':
case '<':
case '>':
+ case 'm':
+ case 'n':
+ case 'o':
+ case 'p':
+ case 'q':
+ case 'v':
if (place == 'd')
{
break;
case 1:
- val = NEXTLONG (p);
- (*info->print_address_func) (val, info);
+ uval = NEXTULONG (p);
+ (*info->print_address_func) (uval, info);
break;
case 2:
val = NEXTWORD (p);
+ (*info->fprintf_func) (info->stream, "%%pc@(");
(*info->print_address_func) (addr + val, info);
+ (*info->fprintf_func) (info->stream, ")");
break;
case 3:
break;
case 'x':
- FETCH_DATA (info, p + 12);
- floatformat_to_double (&floatformat_m68881_ext,
- (char *) p, &flval);
- p += 12;
+ NEXTEXTEND(flval, p);
break;
case 'p':
else if (fc == 0)
(*info->fprintf_func) (info->stream, "%%sfc");
else
- (*info->fprintf_func) (info->stream, "<function code %d>", fc);
+ /* xgettext:c-format */
+ (*info->fprintf_func) (info->stream, _("<function code %d>"), fc);
}
break;
}
break;
+ case 'u':
+ {
+ short is_upper = 0;
+ int reg = fetch_arg (buffer, place, 5, info);
+
+ if (reg & 0x10)
+ {
+ is_upper = 1;
+ reg &= 0xf;
+ }
+ (*info->fprintf_func) (info->stream, "%s%s",
+ reg_names[reg],
+ is_upper ? "u" : "l");
+ }
+ break;
+
default:
return -2;
}
val = (buffer[1] >> 6);
break;
+ case 'm':
+ val = (buffer[1] & 0x40 ? 0x8 : 0)
+ | ((buffer[0] >> 1) & 0x7)
+ | (buffer[3] & 0x80 ? 0x10 : 0);
+ break;
+
+ case 'n':
+ val = (buffer[1] & 0x40 ? 0x8 : 0) | ((buffer[0] >> 1) & 0x7);
+ break;
+
+ case 'o':
+ val = (buffer[2] >> 4) | (buffer[3] & 0x80 ? 0x10 : 0);
+ break;
+
+ case 'M':
+ val = buffer[1] | (buffer[3] & 0x40 ? 0x10 : 0);
+ break;
+
+ case 'N':
+ val = buffer[3] | (buffer[3] & 0x40 ? 0x10 : 0);
+ break;
+
+ case 'h':
+ val = buffer[2] >> 2;
+ break;
+
default:
abort ();
}
switch (bits)
{
+ case 1:
+ return val & 1;
case 2:
return val & 3;
case 3:
if ((word & 0x100) == 0)
{
- word &= 0xff;
- if ((word & 0x80) != 0)
- word -= 0x100;
+ base_disp = word & 0xff;
+ if ((base_disp & 0x80) != 0)
+ base_disp -= 0x100;
if (basereg == -1)
- word += addr;
- print_base (basereg, word, info);
+ base_disp += addr;
+ print_base (basereg, base_disp, info);
(*info->fprintf_func) (info->stream, ",%s)", buf);
return p;
}
projects / deliverable / binutils-gdb.git / blobdiff