/* Print VAX instructions.
- Copyright (C) 1995, 1998 Free Software Foundation, Inc.
+ Copyright 1995, 1998, 2000, 2001, 2002, 2005
+ Free Software Foundation, Inc.
Contributed by Pauline Middelink <middelin@polyware.iaf.nl>
This program 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 "opcode/vax.h"
#include "dis-asm.h"
/* Local function prototypes */
-static int
-print_insn_arg PARAMS ((const char *, unsigned char *, bfd_vma,
- disassemble_info *));
+static int fetch_data PARAMS ((struct disassemble_info *, bfd_byte *));
+static int print_insn_arg
+ PARAMS ((const char *, unsigned char *, bfd_vma, disassemble_info *));
+static int print_insn_mode
+ PARAMS ((const char *, int, unsigned char *, bfd_vma, disassemble_info *));
-static int
-print_insn_mode PARAMS ((int, unsigned char *, bfd_vma, disassemble_info *));
static char *reg_names[] =
{
"r8", "r9", "r10", "r11", "ap", "fp", "sp", "pc"
};
+/* Definitions for the function entry mask bits. */
+static char *entry_mask_bit[] =
+{
+ /* Registers 0 and 1 shall not be saved, since they're used to pass back
+ a function's result to it's caller... */
+ "~r0~", "~r1~",
+ /* Registers 2 .. 11 are normal registers. */
+ "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11",
+ /* Registers 12 and 13 are argument and frame pointer and must not
+ be saved by using the entry mask. */
+ "~ap~", "~fp~",
+ /* Bits 14 and 15 control integer and decimal overflow. */
+ "IntOvfl", "DecOvfl",
+};
+
/* Sign-extend an (unsigned char). */
#if __STDC__ == 1
#define COERCE_SIGNED_CHAR(ch) ((signed char)(ch))
disassemble_info *info;
{
const struct vot *votp;
- const char *argp = NULL;
+ const char *argp;
unsigned char *arg;
struct private priv;
bfd_byte *buffer = priv.the_buffer;
info->private_data = (PTR) &priv;
priv.max_fetched = priv.the_buffer;
priv.insn_start = memaddr;
+
if (setjmp (priv.bailout) != 0)
{
/* Error return. */
return -1;
}
- FETCH_DATA (info, buffer + 2);
+ argp = NULL;
+ /* Check if the info buffer has more than one byte left since
+ the last opcode might be a single byte with no argument data. */
+ if (info->buffer_length - (memaddr - info->buffer_vma) > 1)
+ {
+ FETCH_DATA (info, buffer + 2);
+ }
+ else
+ {
+ FETCH_DATA (info, buffer + 1);
+ buffer[1] = 0;
+ }
+
+ /* Decode function entry mask. */
+ if (info->symbols
+ && info->symbols[0]
+ && (info->symbols[0]->flags & BSF_FUNCTION)
+ && memaddr == bfd_asymbol_value (info->symbols[0]))
+ {
+ int i = 0;
+ int register_mask = buffer[1] << 8 | buffer[0];
+
+ (*info->fprintf_func) (info->stream, "Entry mask 0x%04x = <",
+ register_mask);
+
+ for (i = 15; i >= 0; i--)
+ if (register_mask & (1 << i))
+ (*info->fprintf_func) (info->stream, " %s", entry_mask_bit[i]);
+
+ (*info->fprintf_func) (info->stream, " >");
+
+ return 2;
+ }
+
for (votp = &votstrs[0]; votp->name[0]; votp++)
{
register vax_opcodeT opcode = votp->detail.code;
return p - p0;
}
- return print_insn_mode (arg_len, p0, addr, info);
+ return print_insn_mode (d, arg_len, p0, addr, info);
}
static int
-print_insn_mode (size, p0, addr, info)
+print_insn_mode (d, size, p0, addr, info)
+ const char *d;
int size;
unsigned char *p0;
bfd_vma addr; /* PC for this arg to be relative to */
case 0x10:
case 0x20:
case 0x30: /* literal mode $number */
- (*info->fprintf_func) (info->stream, "$0x%x", mode);
+ if (d[1] == 'd' || d[1] == 'f' || d[1] == 'g' || d[1] == 'h')
+ (*info->fprintf_func) (info->stream, "$0x%x [%c-float]", mode, d[1]);
+ else
+ (*info->fprintf_func) (info->stream, "$0x%x", mode);
break;
case 0x40: /* index: base-addr[Rn] */
- p += print_insn_mode (size, p0 + 1, addr + 1, info);
+ p += print_insn_mode (d, size, p0 + 1, addr + 1, info);
(*info->fprintf_func) (info->stream, "[%s]", reg_names[reg]);
break;
case 0x50: /* register: Rn */
FETCH_DATA (info, p + size);
(*info->fprintf_func) (info->stream, "$0x");
- for (i = 0; i < size; i++)
- (*info->fprintf_func) (info->stream, "%02x", p[size - i - 1]);
+ if (d[1] == 'd' || d[1] == 'f' || d[1] == 'g' || d[1] == 'h')
+ {
+ int float_word;
+
+ float_word = p[0] | (p[1] << 8);
+ if ((d[1] == 'd' || d[1] == 'f')
+ && (float_word & 0xff80) == 0x8000)
+ {
+ (*info->fprintf_func) (info->stream, "[invalid %c-float]",
+ d[1]);
+ }
+ else
+ {
+ for (i = 0; i < size; i++)
+ (*info->fprintf_func) (info->stream, "%02x",
+ p[size - i - 1]);
+ (*info->fprintf_func) (info->stream, " [%c-float]", d[1]);
+ }
+ }
+ else
+ {
+ for (i = 0; i < size; i++)
+ (*info->fprintf_func) (info->stream, "%02x", p[size - i - 1]);
+ }
p += size;
}
else