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* findvar.c: Include "builtin-regs.h".

Browse Source 
(value_of_register): Call value_of_builtin_reg when applicable.
* parse.c: Include "builtin-regs.h" and "gdb_assert.h".
(target_map_name_to_register): Call
builtin_reg_map_name_to_regnum.
* Makefile.in (SFILES): Add builtin-regs.c and std-regs.c.
(COMMON_OBS): Add builtin-regs.o and std-regs.o.
(builtin_regs_h): Define.
(builtin-regs.o): New target.
(findvar.o): Add $(builtin_regs_h).
* builtin-regs.c, builtin-regs.h: New files.
* std-regs.c: New file.
Partial fix for PR gdb/251.
This commit is contained in:
Andrew Cagney 2002-04-09 03:06:14 +00:00
parent 56a6dfb9de
commit 0406ec40ea
7 changed files with 304 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
gdb/ChangeLog
View File

@ -1,3 +1,19 @@
2002-04-08 Andrew Cagney <ac131313@redhat.com>
* findvar.c: Include "builtin-regs.h".
(value_of_register): Call value_of_builtin_reg when applicable.
* parse.c: Include "builtin-regs.h" and "gdb_assert.h".
(target_map_name_to_register): Call
builtin_reg_map_name_to_regnum.
* Makefile.in (SFILES): Add builtin-regs.c and std-regs.c.
(COMMON_OBS): Add builtin-regs.o and std-regs.o.
(builtin_regs_h): Define.
(builtin-regs.o): New target.
(findvar.o): Add $(builtin_regs_h).
* builtin-regs.c, builtin-regs.h: New files.
* std-regs.c: New file.
Partial fix for PR gdb/251.
2002-04-08 Kevin Buettner <kevinb@redhat.com>
* rs6000-tdep.c (rs6000_gdbarch_init): Don't set tm_print_insn;

11
gdb/Makefile.in
View File

@ -550,6 +550,7 @@ SFILES = ax-general.c ax-gdb.c bcache.c blockframe.c breakpoint.c \
tui/tui-file.h tui/tui-file.c tui/tui-out.c tui/tui-hooks.c \
ui-file.h ui-file.c \
frame.c doublest.c \
builtin-regs.c std-regs.c \
gnu-v2-abi.c gnu-v3-abi.c hpacc-abi.c cp-abi.c
LINTFILES = $(SFILES) $(YYFILES) $(CONFIG_SRCS) init.c
@ -589,6 +590,7 @@ annotate_h = annotate.h $(symtab_h) $(gdbtypes_h)
arch_utils_h = arch-utils.h
ax_h = ax.h $(doublest_h)
bcache_h = bcache.h
builtin_regs_h = builtin-regs.h
breakpoint_h = breakpoint.h $(frame_h) $(value_h)
buildsym_h = buildsym.h
c_lang_h = c-lang.h $(value_h)
@ -708,6 +710,7 @@ COMMON_OBS = version.o blockframe.o breakpoint.o findvar.o regcache.o \
event-loop.o event-top.o inf-loop.o completer.o \
gdbarch.o arch-utils.o gdbtypes.o copying.o $(DEPFILES) \
memattr.o mem-break.o target.o parse.o language.o $(YYOBJ) buildsym.o \
builtin-regs.o std-regs.o \
signals.o \
kod.o kod-cisco.o \
gdb-events.o \
@ -1273,6 +1276,9 @@ breakpoint.o: breakpoint.c $(defs_h) $(gdbcmd_h) $(gdbcore_h) \
buildsym.o: buildsym.c $(bfd_h) $(buildsym_h) $(complaints_h) $(defs_h) \
$(objfiles_h) $(symfile_h) $(symtab_h) $(gdb_string_h)
builtin-regs.o: builtin-regs.c $(defs.h) $(builtin_regs_h) $(gdbtypes_h) \
$(gdb_string_h) $(value_h) $(frame_h)
c-lang.o: c-lang.c $(c_lang_h) $(defs_h) $(expression_h) $(gdbtypes_h) \
$(language_h) $(parser_defs_h) $(symtab_h)
@ -1407,7 +1413,7 @@ expprint.o: expprint.c $(defs_h) $(expression_h) $(gdbtypes_h) \
$(language_h) $(parser_defs_h) $(symtab_h) $(value_h)
findvar.o: findvar.c $(defs_h) $(gdbcore_h) $(inferior_h) $(target_h) \
$(gdb_string_h) $(regcache_h)
$(gdb_string_h) $(regcache_h) $(builtin_regs_h)
frame.o: frame.c $(defs_h) $(frame_h) $(target_h) $(value_h) $(inferior_h) \
$(regcache_h)
@ -1804,6 +1810,9 @@ somread.o: somread.c $(bfd_h) $(buildsym_h) $(complaints_h) $(defs_h) \
somsolib.o: somsolib.c $(defs_h) $(regcache_h)
std-regs.o: std-regs.c $(defs_h) $(builtin_regs_h) $(frame_h) \
$(gdbtypes_h) $(value_h)
pa64solib.o: pa64solib.c $(defs_h) $(regcache_h)
hpux-thread.o: hpux-thread.c $(defs_h) $(gdbthread_h) $(target_h) inferior.h \

77
gdb/builtin-regs.c Normal file
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@ -0,0 +1,77 @@
/* 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);
}

35
gdb/builtin-regs.h Normal file
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@ -0,0 +1,35 @@
/* 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. */
#ifndef BUILTIN_REGS_H
#define BUILTIN_REGS_H
extern int builtin_reg_map_name_to_regnum (const char *str, int len);
extern struct value *value_of_builtin_reg (int regnum,
struct frame_info *frame);
extern void add_builtin_reg (const char *name,
struct value *(value) (struct frame_info * frame));
#endif

6
gdb/findvar.c
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@ -33,6 +33,7 @@
#include "floatformat.h"
#include "symfile.h" /* for overlay functions */
#include "regcache.h"
#include "builtin-regs.h"
/* Basic byte-swapping routines. GDB has needed these for a long time...
All extract a target-format integer at ADDR which is LEN bytes long. */
@ -299,6 +300,11 @@ value_of_register (int regnum, struct frame_info *frame)
char *raw_buffer = (char*) alloca (MAX_REGISTER_RAW_SIZE);
enum lval_type lval;
/* Builtin registers lie completly outside of the range of normal
registers. Catch them early so that the target never sees them. */
if (regnum >= NUM_REGS + NUM_PSEUDO_REGS)
return value_of_builtin_reg (regnum, selected_frame);
get_saved_register (raw_buffer, &optim, &addr,
frame, regnum, &lval);

10
gdb/parse.c
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@ -47,6 +47,8 @@
#include "inferior.h" /* for NUM_PSEUDO_REGS. NOTE: replace
with "gdbarch.h" when appropriate. */
#include "doublest.h"
#include "builtin-regs.h"
#include "gdb_assert.h"
/* Symbols which architectures can redefine. */
@ -133,6 +135,14 @@ target_map_name_to_register (char *str, int len)
return std_regs[i].regnum;
}
/* Try builtin registers. */
i = builtin_reg_map_name_to_regnum (str, len);
if (i >= 0)
{
gdb_assert (i >= NUM_REGS + NUM_PSEUDO_REGS);
return i;
}
return -1;
}

150
gdb/std-regs.c Normal file
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@ -0,0 +1,150 @@
/* Builtin frame register, 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 "frame.h"
#include "gdbtypes.h"
#include "value.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)
{
/* $frame. */
if (builtin_type_frame_reg == NULL)
{
#if 0
struct frame
{
void *base;
};
#endif
builtin_type_frame_reg = init_composite_type ("frame", TYPE_CODE_STRUCT);
append_composite_type_field (builtin_type_frame_reg, "base",
builtin_type_void_data_ptr);
}
}
static struct value *
value_of_builtin_frame_reg (struct frame_info *frame)
{
struct value *val;
char *buf;
build_builtin_type_frame_reg ();
val = allocate_value (builtin_type_frame_reg);
VALUE_LVAL (val) = not_lval;
buf = VALUE_CONTENTS_RAW (val);
memset (buf, TYPE_LENGTH (VALUE_TYPE (val)), 0);
/* frame.base. */
if (frame != NULL)
ADDRESS_TO_POINTER (builtin_type_void_data_ptr, buf, frame->frame);
buf += TYPE_LENGTH (builtin_type_void_data_ptr);
/* frame.XXX. */
return val;
}
static struct value *
value_of_builtin_frame_fp_reg (struct frame_info *frame)
{
#ifdef FP_REGNUM
if (FP_REGNUM >= 0)
return value_of_register (FP_REGNUM, frame);
#endif
{
struct value *val = allocate_value (builtin_type_void_data_ptr);
char *buf = VALUE_CONTENTS_RAW (val);
if (frame == NULL)
memset (buf, TYPE_LENGTH (VALUE_TYPE (val)), 0);
else
ADDRESS_TO_POINTER (builtin_type_void_data_ptr, buf, frame->frame);
return val;
}
}
static struct value *
value_of_builtin_frame_pc_reg (struct frame_info *frame)
{
#ifdef PC_REGNUM
if (PC_REGNUM >= 0)
return value_of_register (PC_REGNUM, frame);
#endif
{
struct value *val = allocate_value (builtin_type_void_data_ptr);
char *buf = VALUE_CONTENTS_RAW (val);
if (frame == NULL)
memset (buf, TYPE_LENGTH (VALUE_TYPE (val)), 0);
else
ADDRESS_TO_POINTER (builtin_type_void_data_ptr, buf, frame->pc);
return val;
}
}
static struct value *
value_of_builtin_frame_sp_reg (struct frame_info *frame)
{
#ifdef SP_REGNUM
if (SP_REGNUM >= 0)
return value_of_register (SP_REGNUM, frame);
#endif
error ("Standard register ``$sp'' is not available for this target");
}
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");
}
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);
}