/* 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. */
register int i;
register unsigned char *p;
register char *d;
- GDB_FILE *stream = info->stream;
- read_memory (memaddr, buffer, MAXLEN);
+ int status = (*info->read_memory_func) (memaddr, buffer, MAXLEN, info);
+ if (status != 0)
+ {
+ (*info->memory_error_func) (status, memaddr, info);
+ return -1;
+ }
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. */
if (i == NOPCODES)
{
- fprintf_unfiltered (stream, "0%o", buffer[0]);
+ (*info->fprintf_func) (info->stream, "0%o", buffer[0]);
return 1;
}
- fprintf_unfiltered (stream, "%s", votstrs[i].name);
+ (*info->fprintf_func) (info->stream, "%s", votstrs[i].name);
/* Point at first byte of argument data,
and at descriptor for first argument. */
d = votstrs[i].detail.args;
if (*d)
- fputc_unfiltered (' ', stream);
+ (*info->fprintf_func) (info->stream, " ");
while (*d)
{
- p = print_insn_arg (d, p, memaddr + (p - buffer), stream);
+ p = print_insn_arg (d, p, memaddr + (p - buffer), info);
d += 2;
if (*d)
- fprintf_unfiltered (stream, ",");
+ (*info->fprintf_func) (info->stream, ",");
}
return p - buffer;
}
static unsigned char *
-print_insn_arg (d, p, addr, stream)
+print_insn_arg (d, p, addr, info)
char *d;
register char *p;
CORE_ADDR addr;
- GDB_FILE *stream;
+ disassemble_info *info;
{
register int regnum = *p & 0xf;
float floatlitbuf;
if (*d == 'b')
{
if (d[1] == 'b')
- fprintf_unfiltered (stream, "0x%x", addr + *p++ + 1);
+ (*info->fprintf_func) (info->stream, "0x%x", addr + *p++ + 1);
else
{
- fprintf_unfiltered (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);
- fprintf_unfiltered (stream, "$%f", floatlitbuf);
+ *(int *) &floatlitbuf = 0x4000 + ((p[-1] & 0x3f) << 4);
+ (*info->fprintf_func) (info->stream, "$%f", floatlitbuf);
}
else
- fprintf_unfiltered (stream, "$%d", p[-1] & 0x3f);
+ (*info->fprintf_func) (info->stream, "$%d", p[-1] & 0x3f);
break;
case 4: /* Indexed */
- p = (char *) print_insn_arg (d, p, addr + 1, stream);
- fprintf_unfiltered (stream, "[%s]", reg_names[regnum]);
+ p = (char *) print_insn_arg (d, p, addr + 1, info);
+ (*info->fprintf_func) (info->stream, "[%s]", REGISTER_NAME (regnum));
break;
case 5: /* Register */
- fprintf_unfiltered (stream, reg_names[regnum]);
+ (*info->fprintf_func) (info->stream, REGISTER_NAME (regnum));
break;
case 7: /* Autodecrement */
- fputc_unfiltered ('-', stream);
+ (*info->fprintf_func) (info->stream, "-");
case 6: /* Register deferred */
- fprintf_unfiltered (stream, "(%s)", reg_names[regnum]);
+ (*info->fprintf_func) (info->stream, "(%s)", REGISTER_NAME (regnum));
break;
case 9: /* Autoincrement deferred */
- fputc_unfiltered ('@', stream);
+ (*info->fprintf_func) (info->stream, "@");
if (regnum == PC_REGNUM)
{
- fputc_unfiltered ('#', stream);
- print_address (*(long *)p, stream);
+ (*info->fprintf_func) (info->stream, "#");
+ info->target = *(long *) p;
+ (*info->print_address_func) (info->target, info);
p += 4;
break;
}
case 8: /* Autoincrement */
if (regnum == PC_REGNUM)
{
- fputc_unfiltered ('#', stream);
+ (*info->fprintf_func) (info->stream, "#");
switch (d[1])
{
case 'b':
- fprintf_unfiltered (stream, "%d", *p++);
+ (*info->fprintf_func) (info->stream, "%d", *p++);
break;
case 'w':
- fprintf_unfiltered (stream, "%d", *(short *)p);
+ (*info->fprintf_func) (info->stream, "%d", *(short *) p);
p += 2;
break;
case 'l':
- fprintf_unfiltered (stream, "%d", *(long *)p);
+ (*info->fprintf_func) (info->stream, "%d", *(long *) p);
p += 4;
break;
case 'q':
- fprintf_unfiltered (stream, "0x%x%08x", ((long *)p)[1], ((long *)p)[0]);
+ (*info->fprintf_func) (info->stream, "0x%x%08x",
+ ((long *) p)[1], ((long *) p)[0]);
p += 8;
break;
case 'o':
- fprintf_unfiltered (stream, "0x%x%08x%08x%08x",
- ((long *)p)[3], ((long *)p)[2],
- ((long *)p)[1], ((long *)p)[0]);
+ (*info->fprintf_func) (info->stream, "0x%x%08x%08x%08x",
+ ((long *) p)[3], ((long *) p)[2],
+ ((long *) p)[1], ((long *) p)[0]);
p += 16;
break;
case 'f':
if (INVALID_FLOAT (p, 4))
- fprintf_unfiltered (stream, "<<invalid float 0x%x>>", *(int *) p);
+ (*info->fprintf_func) (info->stream,
+ "<<invalid float 0x%x>>",
+ *(int *) p);
else
- fprintf_unfiltered (stream, "%f", *(float *) p);
+ (*info->fprintf_func) (info->stream, "%f", *(float *) p);
p += 4;
break;
case 'd':
if (INVALID_FLOAT (p, 8))
- fprintf_unfiltered (stream, "<<invalid float 0x%x%08x>>",
- ((long *)p)[1], ((long *)p)[0]);
+ (*info->fprintf_func) (info->stream,
+ "<<invalid float 0x%x%08x>>",
+ ((long *) p)[1], ((long *) p)[0]);
else
- fprintf_unfiltered (stream, "%f", *(double *) p);
+ (*info->fprintf_func) (info->stream, "%f", *(double *) p);
p += 8;
break;
case 'g':
- fprintf_unfiltered (stream, "g-float");
+ (*info->fprintf_func) (info->stream, "g-float");
p += 8;
break;
case 'h':
- fprintf_unfiltered (stream, "h-float");
+ (*info->fprintf_func) (info->stream, "h-float");
p += 16;
break;
}
}
else
- fprintf_unfiltered (stream, "(%s)+", reg_names[regnum]);
+ (*info->fprintf_func) (info->stream, "(%s)+", REGISTER_NAME (regnum));
break;
case 11: /* Byte displacement deferred */
- fputc_unfiltered ('@', stream);
+ (*info->fprintf_func) (info->stream, "@");
case 10: /* Byte displacement */
if (regnum == PC_REGNUM)
- print_address (addr + *p + 2, stream);
+ {
+ info->target = addr + *p + 2;
+ (*info->print_address_func) (info->target, info);
+ }
else
- fprintf_unfiltered (stream, "%d(%s)", *p, reg_names[regnum]);
+ (*info->fprintf_func) (info->stream, "%d(%s)", *p, REGISTER_NAME (regnum));
p += 1;
break;
case 13: /* Word displacement deferred */
- fputc_unfiltered ('@', stream);
+ (*info->fprintf_func) (info->stream, "@");
case 12: /* Word displacement */
if (regnum == PC_REGNUM)
- print_address (addr + *(short *)p + 3, stream);
+ {
+ info->target = addr + *(short *) p + 3;
+ (*info->print_address_func) (info->target, info);
+ }
else
- fprintf_unfiltered (stream, "%d(%s)", *(short *)p, reg_names[regnum]);
+ (*info->fprintf_func) (info->stream, "%d(%s)",
+ *(short *) p, REGISTER_NAME (regnum));
p += 2;
break;
case 15: /* Long displacement deferred */
- fputc_unfiltered ('@', stream);
+ (*info->fprintf_func) (info->stream, "@");
case 14: /* Long displacement */
if (regnum == PC_REGNUM)
- print_address (addr + *(long *)p + 5, stream);
+ {
+ info->target = addr + *(short *) p + 5;
+ (*info->print_address_func) (info->target, info);
+ }
else
- fprintf_unfiltered (stream, "%d(%s)", *(long *)p, reg_names[regnum]);
+ (*info->fprintf_func) (info->stream, "%d(%s)",
+ *(long *) p, REGISTER_NAME (regnum));
p += 4;
}
projects / deliverable / binutils-gdb.git / blobdiff