/* Print VAX instructions for GDB, the GNU debugger.
Copyright 1986, 1989, 1991, 1992, 1996 Free Software Foundation, Inc.
-This file is part of GDB.
+ This file is part of GDB.
-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 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 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.
+ 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; 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., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
#include "defs.h"
#include "symtab.h"
static unsigned char *print_insn_arg ();
\f
+/* Advance PC across any function entry prologue instructions
+ to reach some "real" code. */
+
+CORE_ADDR
+vax_skip_prologue (pc)
+ CORE_ADDR pc;
+{
+ register int op = (unsigned char) read_memory_integer (pc, 1);
+ if (op == 0x11)
+ pc += 2; /* skip brb */
+ if (op == 0x31)
+ pc += 3; /* skip brw */
+ if (op == 0xC2
+ && ((unsigned char) read_memory_integer (pc + 2, 1)) == 0x5E)
+ pc += 3; /* skip subl2 */
+ if (op == 0x9E
+ && ((unsigned char) read_memory_integer (pc + 1, 1)) == 0xAE
+ && ((unsigned char) read_memory_integer (pc + 3, 1)) == 0x5E)
+ pc += 4; /* skip movab */
+ if (op == 0x9E
+ && ((unsigned char) read_memory_integer (pc + 1, 1)) == 0xCE
+ && ((unsigned char) read_memory_integer (pc + 4, 1)) == 0x5E)
+ pc += 5; /* skip movab */
+ if (op == 0x9E
+ && ((unsigned char) read_memory_integer (pc + 1, 1)) == 0xEE
+ && ((unsigned char) read_memory_integer (pc + 6, 1)) == 0x5E)
+ pc += 7; /* skip movab */
+ return pc;
+}
+
+/* Return number of args passed to a frame.
+ Can return -1, meaning no way to tell. */
+
+int
+vax_frame_num_args (fi)
+ struct frame_info *fi;
+{
+ return (0xff & read_memory_integer (FRAME_ARGS_ADDRESS (fi), 1));
+}
+
+
+
/* Print the vax instruction at address MEMADDR in debugged memory,
from disassembler info INFO.
Returns length of the instruction, in bytes. */
for (i = 0; i < NOPCODES; i++)
if (votstrs[i].detail.code == buffer[0]
- || votstrs[i].detail.code == *(unsigned short *)buffer)
+ || votstrs[i].detail.code == *(unsigned short *) buffer)
break;
/* Handle undefined instructions. */
(*info->fprintf_func) (info->stream, "0x%x", addr + *p++ + 1);
else
{
- (*info->fprintf_func) (info->stream, "0x%x", addr + *(short *)p + 2);
+ (*info->fprintf_func) (info->stream, "0x%x", addr + *(short *) p + 2);
p += 2;
}
}
case 3: /* Literal mode */
if (d[1] == 'd' || d[1] == 'f' || d[1] == 'g' || d[1] == 'h')
{
- *(int *)&floatlitbuf = 0x4000 + ((p[-1] & 0x3f) << 4);
+ *(int *) &floatlitbuf = 0x4000 + ((p[-1] & 0x3f) << 4);
(*info->fprintf_func) (info->stream, "$%f", floatlitbuf);
}
else
if (regnum == PC_REGNUM)
{
(*info->fprintf_func) (info->stream, "#");
- info->target = *(long *)p;
+ info->target = *(long *) p;
(*info->print_address_func) (info->target, info);
p += 4;
break;
break;
case 'w':
- (*info->fprintf_func) (info->stream, "%d", *(short *)p);
+ (*info->fprintf_func) (info->stream, "%d", *(short *) p);
p += 2;
break;
case 'l':
- (*info->fprintf_func) (info->stream, "%d", *(long *)p);
+ (*info->fprintf_func) (info->stream, "%d", *(long *) p);
p += 4;
break;
case 'q':
(*info->fprintf_func) (info->stream, "0x%x%08x",
- ((long *)p)[1], ((long *)p)[0]);
+ ((long *) p)[1], ((long *) p)[0]);
p += 8;
break;
case 'o':
(*info->fprintf_func) (info->stream, "0x%x%08x%08x%08x",
- ((long *)p)[3], ((long *)p)[2],
- ((long *)p)[1], ((long *)p)[0]);
+ ((long *) p)[3], ((long *) p)[2],
+ ((long *) p)[1], ((long *) p)[0]);
p += 16;
break;
if (INVALID_FLOAT (p, 8))
(*info->fprintf_func) (info->stream,
"<<invalid float 0x%x%08x>>",
- ((long *)p)[1], ((long *)p)[0]);
+ ((long *) p)[1], ((long *) p)[0]);
else
(*info->fprintf_func) (info->stream, "%f", *(double *) p);
p += 8;
case 12: /* Word displacement */
if (regnum == PC_REGNUM)
{
- info->target = addr + *(short *)p + 3;
+ info->target = addr + *(short *) p + 3;
(*info->print_address_func) (info->target, info);
}
else
(*info->fprintf_func) (info->stream, "%d(%s)",
- *(short *)p, REGISTER_NAME (regnum));
+ *(short *) p, REGISTER_NAME (regnum));
p += 2;
break;
case 14: /* Long displacement */
if (regnum == PC_REGNUM)
{
- info->target = addr + *(short *)p + 5;
+ info->target = addr + *(short *) p + 5;
(*info->print_address_func) (info->target, info);
}
else
(*info->fprintf_func) (info->stream, "%d(%s)",
- *(long *)p, REGISTER_NAME (regnum));
+ *(long *) p, REGISTER_NAME (regnum));
p += 4;
}
projects / deliverable / binutils-gdb.git / blobdiff