77 lines
2.4 KiB
C
77 lines
2.4 KiB
C
/* Builtin registers, for GDB, the GNU debugger.
|
|
|
|
Copyright 2002 Free Software Foundation, Inc.
|
|
|
|
Contributed by Red Hat.
|
|
|
|
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 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. */
|
|
|
|
#include "defs.h"
|
|
#include "builtin-regs.h"
|
|
#include "gdbtypes.h"
|
|
#include "gdb_string.h"
|
|
#include "gdb_assert.h"
|
|
|
|
/* Implement builtin register types. Builtin registers have regnum's
|
|
that live above of the range [0 .. NUM_REGS + NUM_PSEUDO_REGS)
|
|
(which is controlled by the target). The target should never see a
|
|
builtin register's regnum value. */
|
|
|
|
/* An array of builtin registers. Always append, never delete. By
|
|
doing this, the relative regnum (offset from NUM_REGS +
|
|
NUM_PSEUDO_REGS) assigned to each builtin register never changes. */
|
|
|
|
struct builtin_reg
|
|
{
|
|
const char *name;
|
|
struct value *(*value) (struct frame_info * frame);
|
|
};
|
|
|
|
static struct builtin_reg *builtin_regs;
|
|
int nr_builtin_regs;
|
|
|
|
void
|
|
add_builtin_reg (const char *name, struct value *(*value) (struct frame_info * frame))
|
|
{
|
|
nr_builtin_regs++;
|
|
builtin_regs = xrealloc (builtin_regs,
|
|
nr_builtin_regs * sizeof (builtin_regs[0]));
|
|
builtin_regs[nr_builtin_regs - 1].name = name;
|
|
builtin_regs[nr_builtin_regs - 1].value = value;
|
|
}
|
|
|
|
int
|
|
builtin_reg_map_name_to_regnum (const char *name, int len)
|
|
{
|
|
int reg;
|
|
for (reg = 0; reg < nr_builtin_regs; reg++)
|
|
{
|
|
if (len == strlen (builtin_regs[reg].name)
|
|
&& strncmp (builtin_regs[reg].name, name, len) == 0)
|
|
return NUM_REGS + NUM_PSEUDO_REGS + reg;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
struct value *
|
|
value_of_builtin_reg (int regnum, struct frame_info *frame)
|
|
{
|
|
int reg = regnum - (NUM_REGS + NUM_PSEUDO_REGS);
|
|
gdb_assert (reg >= 0 && reg < nr_builtin_regs);
|
|
return builtin_regs[reg].value (frame);
|
|
}
|