/* Builtin frame register, for GDB, the GNU debugger.
- Copyright 2002 Free Software Foundation, Inc.
+ Copyright (C) 2002, 2005, 2007, 2008, 2009, 2010
+ Free Software Foundation, Inc.
Contributed by Red Hat.
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
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
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. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
-#include "builtin-regs.h"
+#include "user-regs.h"
#include "frame.h"
#include "gdbtypes.h"
#include "value.h"
+#include "gdb_string.h"
-/* Types that describe the various builtin registers. */
-static struct type *builtin_type_frame_reg;
-
-/* Constructors for those types. */
-
-static void
-build_builtin_type_frame_reg (void)
+static struct value *
+value_of_builtin_frame_fp_reg (struct frame_info *frame, const void *baton)
{
- /* $frame. */
- if (builtin_type_frame_reg == NULL)
+ struct gdbarch *gdbarch = get_frame_arch (frame);
+ if (gdbarch_deprecated_fp_regnum (gdbarch) >= 0)
+ /* NOTE: cagney/2003-04-24: Since the mere presence of "fp" in the
+ register name table overrides this built-in $fp register, there
+ is no real reason for this gdbarch_deprecated_fp_regnum trickery here.
+ An architecture wanting to implement "$fp" as alias for a raw
+ register can do so by adding "fp" to register name table (mind
+ you, doing this is probably a dangerous thing). */
+ return value_of_register (gdbarch_deprecated_fp_regnum (gdbarch),
+ frame);
+ else
{
-#if 0
- struct frame
- {
- void *base;
- };
-#endif
- builtin_type_frame_reg = init_composite_type ("frame", TYPE_CODE_STRUCT);
- append_composite_type_field (builtin_type_frame_reg, "base",
- builtin_type_void_data_ptr);
+ struct type *data_ptr_type = builtin_type (gdbarch)->builtin_data_ptr;
+ struct value *val = allocate_value (data_ptr_type);
+ gdb_byte *buf = value_contents_raw (val);
+ if (frame == NULL)
+ memset (buf, 0, TYPE_LENGTH (value_type (val)));
+ else
+ gdbarch_address_to_pointer (gdbarch, data_ptr_type,
+ buf, get_frame_base_address (frame));
+ return val;
}
}
static struct value *
-value_of_builtin_frame_reg (struct frame_info *frame)
-{
- struct value *val;
- char *buf;
- build_builtin_type_frame_reg ();
- val = allocate_value (builtin_type_frame_reg);
- VALUE_LVAL (val) = not_lval;
- buf = VALUE_CONTENTS_RAW (val);
- memset (buf, TYPE_LENGTH (VALUE_TYPE (val)), 0);
- /* frame.base. */
- if (frame != NULL)
- ADDRESS_TO_POINTER (builtin_type_void_data_ptr, buf, frame->frame);
- buf += TYPE_LENGTH (builtin_type_void_data_ptr);
- /* frame.XXX. */
- return val;
-}
-
-static struct value *
-value_of_builtin_frame_fp_reg (struct frame_info *frame)
+value_of_builtin_frame_pc_reg (struct frame_info *frame, const void *baton)
{
-#ifdef FP_REGNUM
- if (FP_REGNUM >= 0)
- return value_of_register (FP_REGNUM, frame);
-#endif
- {
- struct value *val = allocate_value (builtin_type_void_data_ptr);
- char *buf = VALUE_CONTENTS_RAW (val);
- if (frame == NULL)
- memset (buf, TYPE_LENGTH (VALUE_TYPE (val)), 0);
- else
- ADDRESS_TO_POINTER (builtin_type_void_data_ptr, buf, frame->frame);
- return val;
- }
+ struct gdbarch *gdbarch = get_frame_arch (frame);
+ if (gdbarch_pc_regnum (gdbarch) >= 0)
+ return value_of_register (gdbarch_pc_regnum (gdbarch), frame);
+ else
+ {
+ struct type *func_ptr_type = builtin_type (gdbarch)->builtin_func_ptr;
+ struct value *val = allocate_value (func_ptr_type);
+ gdb_byte *buf = value_contents_raw (val);
+ if (frame == NULL)
+ memset (buf, 0, TYPE_LENGTH (value_type (val)));
+ else
+ gdbarch_address_to_pointer (gdbarch, func_ptr_type,
+ buf, get_frame_pc (frame));
+ return val;
+ }
}
static struct value *
-value_of_builtin_frame_pc_reg (struct frame_info *frame)
+value_of_builtin_frame_sp_reg (struct frame_info *frame, const void *baton)
{
-#ifdef PC_REGNUM
- if (PC_REGNUM >= 0)
- return value_of_register (PC_REGNUM, frame);
-#endif
- {
- struct value *val = allocate_value (builtin_type_void_data_ptr);
- char *buf = VALUE_CONTENTS_RAW (val);
- if (frame == NULL)
- memset (buf, TYPE_LENGTH (VALUE_TYPE (val)), 0);
- else
- ADDRESS_TO_POINTER (builtin_type_void_data_ptr, buf, frame->pc);
- return val;
- }
+ struct gdbarch *gdbarch = get_frame_arch (frame);
+ if (gdbarch_sp_regnum (gdbarch) >= 0)
+ return value_of_register (gdbarch_sp_regnum (gdbarch), frame);
+ error (_("Standard register ``$sp'' is not available for this target"));
}
static struct value *
-value_of_builtin_frame_sp_reg (struct frame_info *frame)
+value_of_builtin_frame_ps_reg (struct frame_info *frame, const void *baton)
{
-#ifdef SP_REGNUM
- if (SP_REGNUM >= 0)
- return value_of_register (SP_REGNUM, frame);
-#endif
- error ("Standard register ``$sp'' is not available for this target");
+ struct gdbarch *gdbarch = get_frame_arch (frame);
+ if (gdbarch_ps_regnum (gdbarch) >= 0)
+ return value_of_register (gdbarch_ps_regnum (gdbarch), frame);
+ error (_("Standard register ``$ps'' is not available for this target"));
}
-static struct value *
-value_of_builtin_frame_ps_reg (struct frame_info *frame)
-{
-#ifdef PS_REGNUM
- if (PS_REGNUM >= 0)
- return value_of_register (PS_REGNUM, frame);
-#endif
- error ("Standard register ``$ps'' is not available for this target");
-}
+extern initialize_file_ftype _initialize_frame_reg; /* -Wmissing-prototypes */
void
_initialize_frame_reg (void)
{
- /* FIXME: cagney/2002-02-08: At present the local builtin types
- can't be initialized using _initialize*() or gdbarch. Due mainly
- to non-multi-arch targets, GDB initializes things piece meal and,
- as a consequence can leave these types NULL. */
- REGISTER_GDBARCH_SWAP (builtin_type_frame_reg);
-
/* Frame based $fp, $pc, $sp and $ps. These only come into play
when the target does not define its own version of these
registers. */
- add_builtin_reg ("fp", value_of_builtin_frame_fp_reg);
- add_builtin_reg ("pc", value_of_builtin_frame_pc_reg);
- add_builtin_reg ("sp", value_of_builtin_frame_sp_reg);
- add_builtin_reg ("ps", value_of_builtin_frame_ps_reg);
-
- /* NOTE: cagney/2002-04-05: For moment leave the $frame / $gdbframe
- / $gdb.frame disabled. It isn't yet clear which of the many
- options is the best. */
- if (0)
- add_builtin_reg ("frame", value_of_builtin_frame_reg);
+ user_reg_add_builtin ("fp", value_of_builtin_frame_fp_reg, NULL);
+ user_reg_add_builtin ("pc", value_of_builtin_frame_pc_reg, NULL);
+ user_reg_add_builtin ("sp", value_of_builtin_frame_sp_reg, NULL);
+ user_reg_add_builtin ("ps", value_of_builtin_frame_ps_reg, NULL);
}
projects / deliverable / binutils-gdb.git / blobdiff