aa2a3f87e9
* gdbarch.sh (SIGTRAMP_START, SIGTRAMP_END): Deprecate. * gdbarch.h, gdbarch.c: Re-generate. * i386obsd-tdep.c (i386obsd_init_abi): Update. * i386nbsd-tdep.c (i386nbsd_init_abi): Update. * i386bsd-tdep.c (i386bsd_init_abi): Update. * config/vax/tm-vaxbsd.h (DEPRECATED_SIGTRAMP_END) (DEPRECATED_SIGTRAMP_START): Update. * config/m68k/tm-nbsd.h (DEPRECATED_SIGTRAMP_END) (DEPRECATED_SIGTRAMP_START): Update. * blockframe.c (find_pc_sect_partial_function): Update. * arch-utils.c (legacy_pc_in_sigtramp): Update. Index: doc/ChangeLog 2004-03-23 Andrew Cagney <cagney@redhat.com> * gdbint.texinfo (Target Architecture Definition): Deprecate references to SIGTRAMP_START and SIGTRAMP_END.
755 lines
20 KiB
C
755 lines
20 KiB
C
/* Dynamic architecture support for GDB, the GNU debugger.
|
||
|
||
Copyright 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation,
|
||
Inc.
|
||
|
||
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 "arch-utils.h"
|
||
#include "buildsym.h"
|
||
#include "gdbcmd.h"
|
||
#include "inferior.h" /* enum CALL_DUMMY_LOCATION et.al. */
|
||
#include "gdb_string.h"
|
||
#include "regcache.h"
|
||
#include "gdb_assert.h"
|
||
#include "sim-regno.h"
|
||
|
||
#include "osabi.h"
|
||
|
||
#include "version.h"
|
||
|
||
#include "floatformat.h"
|
||
|
||
/* Implementation of extract return value that grubs around in the
|
||
register cache. */
|
||
void
|
||
legacy_extract_return_value (struct type *type, struct regcache *regcache,
|
||
void *valbuf)
|
||
{
|
||
char *registers = deprecated_grub_regcache_for_registers (regcache);
|
||
bfd_byte *buf = valbuf;
|
||
DEPRECATED_EXTRACT_RETURN_VALUE (type, registers, buf); /* OK */
|
||
}
|
||
|
||
/* Implementation of store return value that grubs the register cache.
|
||
Takes a local copy of the buffer to avoid const problems. */
|
||
void
|
||
legacy_store_return_value (struct type *type, struct regcache *regcache,
|
||
const void *buf)
|
||
{
|
||
bfd_byte *b = alloca (TYPE_LENGTH (type));
|
||
gdb_assert (regcache == current_regcache);
|
||
memcpy (b, buf, TYPE_LENGTH (type));
|
||
DEPRECATED_STORE_RETURN_VALUE (type, b);
|
||
}
|
||
|
||
|
||
int
|
||
always_use_struct_convention (int gcc_p, struct type *value_type)
|
||
{
|
||
return 1;
|
||
}
|
||
|
||
|
||
int
|
||
legacy_register_sim_regno (int regnum)
|
||
{
|
||
/* Only makes sense to supply raw registers. */
|
||
gdb_assert (regnum >= 0 && regnum < NUM_REGS);
|
||
/* NOTE: cagney/2002-05-13: The old code did it this way and it is
|
||
suspected that some GDB/SIM combinations may rely on this
|
||
behavour. The default should be one2one_register_sim_regno
|
||
(below). */
|
||
if (REGISTER_NAME (regnum) != NULL
|
||
&& REGISTER_NAME (regnum)[0] != '\0')
|
||
return regnum;
|
||
else
|
||
return LEGACY_SIM_REGNO_IGNORE;
|
||
}
|
||
|
||
int
|
||
generic_return_value_on_stack_not (struct type *type)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
CORE_ADDR
|
||
generic_skip_trampoline_code (CORE_ADDR pc)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
CORE_ADDR
|
||
generic_skip_solib_resolver (struct gdbarch *gdbarch, CORE_ADDR pc)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
generic_in_solib_call_trampoline (CORE_ADDR pc, char *name)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
generic_in_solib_return_trampoline (CORE_ADDR pc, char *name)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
generic_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR pc)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
#if defined (CALL_DUMMY)
|
||
LONGEST legacy_call_dummy_words[] = CALL_DUMMY;
|
||
#else
|
||
LONGEST legacy_call_dummy_words[1];
|
||
#endif
|
||
int legacy_sizeof_call_dummy_words = sizeof (legacy_call_dummy_words);
|
||
|
||
void
|
||
generic_remote_translate_xfer_address (struct gdbarch *gdbarch,
|
||
struct regcache *regcache,
|
||
CORE_ADDR gdb_addr, int gdb_len,
|
||
CORE_ADDR * rem_addr, int *rem_len)
|
||
{
|
||
*rem_addr = gdb_addr;
|
||
*rem_len = gdb_len;
|
||
}
|
||
|
||
/* Helper functions for INNER_THAN */
|
||
|
||
int
|
||
core_addr_lessthan (CORE_ADDR lhs, CORE_ADDR rhs)
|
||
{
|
||
return (lhs < rhs);
|
||
}
|
||
|
||
int
|
||
core_addr_greaterthan (CORE_ADDR lhs, CORE_ADDR rhs)
|
||
{
|
||
return (lhs > rhs);
|
||
}
|
||
|
||
|
||
/* Helper functions for TARGET_{FLOAT,DOUBLE}_FORMAT */
|
||
|
||
const struct floatformat *
|
||
default_float_format (struct gdbarch *gdbarch)
|
||
{
|
||
int byte_order = gdbarch_byte_order (gdbarch);
|
||
switch (byte_order)
|
||
{
|
||
case BFD_ENDIAN_BIG:
|
||
return &floatformat_ieee_single_big;
|
||
case BFD_ENDIAN_LITTLE:
|
||
return &floatformat_ieee_single_little;
|
||
default:
|
||
internal_error (__FILE__, __LINE__,
|
||
"default_float_format: bad byte order");
|
||
}
|
||
}
|
||
|
||
|
||
const struct floatformat *
|
||
default_double_format (struct gdbarch *gdbarch)
|
||
{
|
||
int byte_order = gdbarch_byte_order (gdbarch);
|
||
switch (byte_order)
|
||
{
|
||
case BFD_ENDIAN_BIG:
|
||
return &floatformat_ieee_double_big;
|
||
case BFD_ENDIAN_LITTLE:
|
||
return &floatformat_ieee_double_little;
|
||
default:
|
||
internal_error (__FILE__, __LINE__,
|
||
"default_double_format: bad byte order");
|
||
}
|
||
}
|
||
|
||
/* Misc helper functions for targets. */
|
||
|
||
CORE_ADDR
|
||
core_addr_identity (CORE_ADDR addr)
|
||
{
|
||
return addr;
|
||
}
|
||
|
||
CORE_ADDR
|
||
convert_from_func_ptr_addr_identity (struct gdbarch *gdbarch, CORE_ADDR addr,
|
||
struct target_ops *targ)
|
||
{
|
||
return addr;
|
||
}
|
||
|
||
int
|
||
no_op_reg_to_regnum (int reg)
|
||
{
|
||
return reg;
|
||
}
|
||
|
||
CORE_ADDR
|
||
deprecated_init_frame_pc_default (int fromleaf, struct frame_info *prev)
|
||
{
|
||
if (fromleaf && DEPRECATED_SAVED_PC_AFTER_CALL_P ())
|
||
return DEPRECATED_SAVED_PC_AFTER_CALL (get_next_frame (prev));
|
||
else if (get_next_frame (prev) != NULL)
|
||
return DEPRECATED_FRAME_SAVED_PC (get_next_frame (prev));
|
||
else
|
||
return read_pc ();
|
||
}
|
||
|
||
void
|
||
default_elf_make_msymbol_special (asymbol *sym, struct minimal_symbol *msym)
|
||
{
|
||
return;
|
||
}
|
||
|
||
void
|
||
default_coff_make_msymbol_special (int val, struct minimal_symbol *msym)
|
||
{
|
||
return;
|
||
}
|
||
|
||
int
|
||
cannot_register_not (int regnum)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
/* Legacy version of target_virtual_frame_pointer(). Assumes that
|
||
there is an DEPRECATED_FP_REGNUM and that it is the same, cooked or
|
||
raw. */
|
||
|
||
void
|
||
legacy_virtual_frame_pointer (CORE_ADDR pc,
|
||
int *frame_regnum,
|
||
LONGEST *frame_offset)
|
||
{
|
||
/* FIXME: cagney/2002-09-13: This code is used when identifying the
|
||
frame pointer of the current PC. It is assuming that a single
|
||
register and an offset can determine this. I think it should
|
||
instead generate a byte code expression as that would work better
|
||
with things like Dwarf2's CFI. */
|
||
if (DEPRECATED_FP_REGNUM >= 0 && DEPRECATED_FP_REGNUM < NUM_REGS)
|
||
*frame_regnum = DEPRECATED_FP_REGNUM;
|
||
else if (SP_REGNUM >= 0 && SP_REGNUM < NUM_REGS)
|
||
*frame_regnum = SP_REGNUM;
|
||
else
|
||
/* Should this be an internal error? I guess so, it is reflecting
|
||
an architectural limitation in the current design. */
|
||
internal_error (__FILE__, __LINE__, "No virtual frame pointer available");
|
||
*frame_offset = 0;
|
||
}
|
||
|
||
/* Assume the world is sane, every register's virtual and real size
|
||
is identical. */
|
||
|
||
int
|
||
generic_register_size (int regnum)
|
||
{
|
||
gdb_assert (regnum >= 0 && regnum < NUM_REGS + NUM_PSEUDO_REGS);
|
||
if (gdbarch_register_type_p (current_gdbarch))
|
||
return TYPE_LENGTH (gdbarch_register_type (current_gdbarch, regnum));
|
||
else
|
||
/* FIXME: cagney/2003-03-01: Once all architectures implement
|
||
gdbarch_register_type(), this entire function can go away. It
|
||
is made obsolete by register_size(). */
|
||
return TYPE_LENGTH (DEPRECATED_REGISTER_VIRTUAL_TYPE (regnum)); /* OK */
|
||
}
|
||
|
||
/* Assume all registers are adjacent. */
|
||
|
||
int
|
||
generic_register_byte (int regnum)
|
||
{
|
||
int byte;
|
||
int i;
|
||
gdb_assert (regnum >= 0 && regnum < NUM_REGS + NUM_PSEUDO_REGS);
|
||
byte = 0;
|
||
for (i = 0; i < regnum; i++)
|
||
{
|
||
byte += generic_register_size (i);
|
||
}
|
||
return byte;
|
||
}
|
||
|
||
|
||
int
|
||
legacy_pc_in_sigtramp (CORE_ADDR pc, char *name)
|
||
{
|
||
#if !defined (DEPRECATED_IN_SIGTRAMP)
|
||
if (DEPRECATED_SIGTRAMP_START_P ())
|
||
return ((pc) >= DEPRECATED_SIGTRAMP_START (pc)
|
||
&& (pc) < DEPRECATED_SIGTRAMP_END (pc));
|
||
else
|
||
return name && strcmp ("_sigtramp", name) == 0;
|
||
#else
|
||
return DEPRECATED_IN_SIGTRAMP (pc, name);
|
||
#endif
|
||
}
|
||
|
||
int
|
||
legacy_convert_register_p (int regnum, struct type *type)
|
||
{
|
||
return (DEPRECATED_REGISTER_CONVERTIBLE_P ()
|
||
&& DEPRECATED_REGISTER_CONVERTIBLE (regnum));
|
||
}
|
||
|
||
void
|
||
legacy_register_to_value (struct frame_info *frame, int regnum,
|
||
struct type *type, void *to)
|
||
{
|
||
char from[MAX_REGISTER_SIZE];
|
||
get_frame_register (frame, regnum, from);
|
||
DEPRECATED_REGISTER_CONVERT_TO_VIRTUAL (regnum, type, from, to);
|
||
}
|
||
|
||
void
|
||
legacy_value_to_register (struct frame_info *frame, int regnum,
|
||
struct type *type, const void *tmp)
|
||
{
|
||
char to[MAX_REGISTER_SIZE];
|
||
char *from = alloca (TYPE_LENGTH (type));
|
||
memcpy (from, from, TYPE_LENGTH (type));
|
||
DEPRECATED_REGISTER_CONVERT_TO_RAW (type, regnum, from, to);
|
||
put_frame_register (frame, regnum, to);
|
||
}
|
||
|
||
int
|
||
default_stabs_argument_has_addr (struct gdbarch *gdbarch, struct type *type)
|
||
{
|
||
if (DEPRECATED_REG_STRUCT_HAS_ADDR_P ()
|
||
&& DEPRECATED_REG_STRUCT_HAS_ADDR (processing_gcc_compilation, type))
|
||
{
|
||
CHECK_TYPEDEF (type);
|
||
|
||
return (TYPE_CODE (type) == TYPE_CODE_STRUCT
|
||
|| TYPE_CODE (type) == TYPE_CODE_UNION
|
||
|| TYPE_CODE (type) == TYPE_CODE_SET
|
||
|| TYPE_CODE (type) == TYPE_CODE_BITSTRING);
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* Functions to manipulate the endianness of the target. */
|
||
|
||
/* ``target_byte_order'' is only used when non- multi-arch.
|
||
Multi-arch targets obtain the current byte order using the
|
||
TARGET_BYTE_ORDER gdbarch method.
|
||
|
||
The choice of initial value is entirely arbitrary. During startup,
|
||
the function initialize_current_architecture() updates this value
|
||
based on default byte-order information extracted from BFD. */
|
||
static int target_byte_order = BFD_ENDIAN_BIG;
|
||
static int target_byte_order_auto = 1;
|
||
|
||
enum bfd_endian
|
||
selected_byte_order (void)
|
||
{
|
||
if (target_byte_order_auto)
|
||
return BFD_ENDIAN_UNKNOWN;
|
||
else
|
||
return target_byte_order;
|
||
}
|
||
|
||
static const char endian_big[] = "big";
|
||
static const char endian_little[] = "little";
|
||
static const char endian_auto[] = "auto";
|
||
static const char *endian_enum[] =
|
||
{
|
||
endian_big,
|
||
endian_little,
|
||
endian_auto,
|
||
NULL,
|
||
};
|
||
static const char *set_endian_string;
|
||
|
||
/* Called by ``show endian''. */
|
||
|
||
static void
|
||
show_endian (char *args, int from_tty)
|
||
{
|
||
if (target_byte_order_auto)
|
||
printf_unfiltered ("The target endianness is set automatically (currently %s endian)\n",
|
||
(TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? "big" : "little"));
|
||
else
|
||
printf_unfiltered ("The target is assumed to be %s endian\n",
|
||
(TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? "big" : "little"));
|
||
}
|
||
|
||
static void
|
||
set_endian (char *ignore_args, int from_tty, struct cmd_list_element *c)
|
||
{
|
||
if (set_endian_string == endian_auto)
|
||
{
|
||
target_byte_order_auto = 1;
|
||
}
|
||
else if (set_endian_string == endian_little)
|
||
{
|
||
struct gdbarch_info info;
|
||
target_byte_order_auto = 0;
|
||
gdbarch_info_init (&info);
|
||
info.byte_order = BFD_ENDIAN_LITTLE;
|
||
if (! gdbarch_update_p (info))
|
||
printf_unfiltered ("Little endian target not supported by GDB\n");
|
||
}
|
||
else if (set_endian_string == endian_big)
|
||
{
|
||
struct gdbarch_info info;
|
||
target_byte_order_auto = 0;
|
||
gdbarch_info_init (&info);
|
||
info.byte_order = BFD_ENDIAN_BIG;
|
||
if (! gdbarch_update_p (info))
|
||
printf_unfiltered ("Big endian target not supported by GDB\n");
|
||
}
|
||
else
|
||
internal_error (__FILE__, __LINE__,
|
||
"set_endian: bad value");
|
||
show_endian (NULL, from_tty);
|
||
}
|
||
|
||
/* Functions to manipulate the architecture of the target */
|
||
|
||
enum set_arch { set_arch_auto, set_arch_manual };
|
||
|
||
static int target_architecture_auto = 1;
|
||
|
||
static const char *set_architecture_string;
|
||
|
||
const char *
|
||
selected_architecture_name (void)
|
||
{
|
||
if (target_architecture_auto)
|
||
return NULL;
|
||
else
|
||
return set_architecture_string;
|
||
}
|
||
|
||
/* Called if the user enters ``show architecture'' without an
|
||
argument. */
|
||
|
||
static void
|
||
show_architecture (char *args, int from_tty)
|
||
{
|
||
const char *arch;
|
||
arch = TARGET_ARCHITECTURE->printable_name;
|
||
if (target_architecture_auto)
|
||
printf_filtered ("The target architecture is set automatically (currently %s)\n", arch);
|
||
else
|
||
printf_filtered ("The target architecture is assumed to be %s\n", arch);
|
||
}
|
||
|
||
|
||
/* Called if the user enters ``set architecture'' with or without an
|
||
argument. */
|
||
|
||
static void
|
||
set_architecture (char *ignore_args, int from_tty, struct cmd_list_element *c)
|
||
{
|
||
if (strcmp (set_architecture_string, "auto") == 0)
|
||
{
|
||
target_architecture_auto = 1;
|
||
}
|
||
else
|
||
{
|
||
struct gdbarch_info info;
|
||
gdbarch_info_init (&info);
|
||
info.bfd_arch_info = bfd_scan_arch (set_architecture_string);
|
||
if (info.bfd_arch_info == NULL)
|
||
internal_error (__FILE__, __LINE__,
|
||
"set_architecture: bfd_scan_arch failed");
|
||
if (gdbarch_update_p (info))
|
||
target_architecture_auto = 0;
|
||
else
|
||
printf_unfiltered ("Architecture `%s' not recognized.\n",
|
||
set_architecture_string);
|
||
}
|
||
show_architecture (NULL, from_tty);
|
||
}
|
||
|
||
/* Try to select a global architecture that matches "info". Return
|
||
non-zero if the attempt succeds. */
|
||
int
|
||
gdbarch_update_p (struct gdbarch_info info)
|
||
{
|
||
struct gdbarch *new_gdbarch = gdbarch_find_by_info (info);
|
||
|
||
/* If there no architecture by that name, reject the request. */
|
||
if (new_gdbarch == NULL)
|
||
{
|
||
if (gdbarch_debug)
|
||
fprintf_unfiltered (gdb_stdlog, "gdbarch_update_p: "
|
||
"Architecture not found\n");
|
||
return 0;
|
||
}
|
||
|
||
/* If it is the same old architecture, accept the request (but don't
|
||
swap anything). */
|
||
if (new_gdbarch == current_gdbarch)
|
||
{
|
||
if (gdbarch_debug)
|
||
fprintf_unfiltered (gdb_stdlog, "gdbarch_update_p: "
|
||
"Architecture 0x%08lx (%s) unchanged\n",
|
||
(long) new_gdbarch,
|
||
gdbarch_bfd_arch_info (new_gdbarch)->printable_name);
|
||
return 1;
|
||
}
|
||
|
||
/* It's a new architecture, swap it in. */
|
||
if (gdbarch_debug)
|
||
fprintf_unfiltered (gdb_stdlog, "gdbarch_update_p: "
|
||
"New architecture 0x%08lx (%s) selected\n",
|
||
(long) new_gdbarch,
|
||
gdbarch_bfd_arch_info (new_gdbarch)->printable_name);
|
||
deprecated_current_gdbarch_select_hack (new_gdbarch);
|
||
|
||
return 1;
|
||
}
|
||
|
||
/* Return the architecture for ABFD. If no suitable architecture
|
||
could be find, return NULL. */
|
||
|
||
struct gdbarch *
|
||
gdbarch_from_bfd (bfd *abfd)
|
||
{
|
||
struct gdbarch *old_gdbarch = current_gdbarch;
|
||
struct gdbarch *new_gdbarch;
|
||
struct gdbarch_info info;
|
||
|
||
gdbarch_info_init (&info);
|
||
info.abfd = abfd;
|
||
return gdbarch_find_by_info (info);
|
||
}
|
||
|
||
/* Set the dynamic target-system-dependent parameters (architecture,
|
||
byte-order) using information found in the BFD */
|
||
|
||
void
|
||
set_gdbarch_from_file (bfd *abfd)
|
||
{
|
||
struct gdbarch *gdbarch;
|
||
|
||
gdbarch = gdbarch_from_bfd (abfd);
|
||
if (gdbarch == NULL)
|
||
error ("Architecture of file not recognized.\n");
|
||
deprecated_current_gdbarch_select_hack (gdbarch);
|
||
}
|
||
|
||
/* Initialize the current architecture. Update the ``set
|
||
architecture'' command so that it specifies a list of valid
|
||
architectures. */
|
||
|
||
#ifdef DEFAULT_BFD_ARCH
|
||
extern const bfd_arch_info_type DEFAULT_BFD_ARCH;
|
||
static const bfd_arch_info_type *default_bfd_arch = &DEFAULT_BFD_ARCH;
|
||
#else
|
||
static const bfd_arch_info_type *default_bfd_arch;
|
||
#endif
|
||
|
||
#ifdef DEFAULT_BFD_VEC
|
||
extern const bfd_target DEFAULT_BFD_VEC;
|
||
static const bfd_target *default_bfd_vec = &DEFAULT_BFD_VEC;
|
||
#else
|
||
static const bfd_target *default_bfd_vec;
|
||
#endif
|
||
|
||
void
|
||
initialize_current_architecture (void)
|
||
{
|
||
const char **arches = gdbarch_printable_names ();
|
||
|
||
/* determine a default architecture and byte order. */
|
||
struct gdbarch_info info;
|
||
gdbarch_info_init (&info);
|
||
|
||
/* Find a default architecture. */
|
||
if (info.bfd_arch_info == NULL
|
||
&& default_bfd_arch != NULL)
|
||
info.bfd_arch_info = default_bfd_arch;
|
||
if (info.bfd_arch_info == NULL)
|
||
{
|
||
/* Choose the architecture by taking the first one
|
||
alphabetically. */
|
||
const char *chosen = arches[0];
|
||
const char **arch;
|
||
for (arch = arches; *arch != NULL; arch++)
|
||
{
|
||
if (strcmp (*arch, chosen) < 0)
|
||
chosen = *arch;
|
||
}
|
||
if (chosen == NULL)
|
||
internal_error (__FILE__, __LINE__,
|
||
"initialize_current_architecture: No arch");
|
||
info.bfd_arch_info = bfd_scan_arch (chosen);
|
||
if (info.bfd_arch_info == NULL)
|
||
internal_error (__FILE__, __LINE__,
|
||
"initialize_current_architecture: Arch not found");
|
||
}
|
||
|
||
/* Take several guesses at a byte order. */
|
||
if (info.byte_order == BFD_ENDIAN_UNKNOWN
|
||
&& default_bfd_vec != NULL)
|
||
{
|
||
/* Extract BFD's default vector's byte order. */
|
||
switch (default_bfd_vec->byteorder)
|
||
{
|
||
case BFD_ENDIAN_BIG:
|
||
info.byte_order = BFD_ENDIAN_BIG;
|
||
break;
|
||
case BFD_ENDIAN_LITTLE:
|
||
info.byte_order = BFD_ENDIAN_LITTLE;
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
if (info.byte_order == BFD_ENDIAN_UNKNOWN)
|
||
{
|
||
/* look for ``*el-*'' in the target name. */
|
||
const char *chp;
|
||
chp = strchr (target_name, '-');
|
||
if (chp != NULL
|
||
&& chp - 2 >= target_name
|
||
&& strncmp (chp - 2, "el", 2) == 0)
|
||
info.byte_order = BFD_ENDIAN_LITTLE;
|
||
}
|
||
if (info.byte_order == BFD_ENDIAN_UNKNOWN)
|
||
{
|
||
/* Wire it to big-endian!!! */
|
||
info.byte_order = BFD_ENDIAN_BIG;
|
||
}
|
||
|
||
if (! gdbarch_update_p (info))
|
||
internal_error (__FILE__, __LINE__,
|
||
"initialize_current_architecture: Selection of initial architecture failed");
|
||
|
||
/* Create the ``set architecture'' command appending ``auto'' to the
|
||
list of architectures. */
|
||
{
|
||
struct cmd_list_element *c;
|
||
/* Append ``auto''. */
|
||
int nr;
|
||
for (nr = 0; arches[nr] != NULL; nr++);
|
||
arches = xrealloc (arches, sizeof (char*) * (nr + 2));
|
||
arches[nr + 0] = "auto";
|
||
arches[nr + 1] = NULL;
|
||
/* FIXME: add_set_enum_cmd() uses an array of ``char *'' instead
|
||
of ``const char *''. We just happen to know that the casts are
|
||
safe. */
|
||
c = add_set_enum_cmd ("architecture", class_support,
|
||
arches, &set_architecture_string,
|
||
"Set architecture of target.",
|
||
&setlist);
|
||
set_cmd_sfunc (c, set_architecture);
|
||
add_alias_cmd ("processor", "architecture", class_support, 1, &setlist);
|
||
/* Don't use set_from_show - need to print both auto/manual and
|
||
current setting. */
|
||
add_cmd ("architecture", class_support, show_architecture,
|
||
"Show the current target architecture", &showlist);
|
||
}
|
||
}
|
||
|
||
|
||
/* Initialize a gdbarch info to values that will be automatically
|
||
overridden. Note: Originally, this ``struct info'' was initialized
|
||
using memset(0). Unfortunately, that ran into problems, namely
|
||
BFD_ENDIAN_BIG is zero. An explicit initialization function that
|
||
can explicitly set each field to a well defined value is used. */
|
||
|
||
void
|
||
gdbarch_info_init (struct gdbarch_info *info)
|
||
{
|
||
memset (info, 0, sizeof (struct gdbarch_info));
|
||
info->byte_order = BFD_ENDIAN_UNKNOWN;
|
||
info->osabi = GDB_OSABI_UNINITIALIZED;
|
||
}
|
||
|
||
/* Similar to init, but this time fill in the blanks. Information is
|
||
obtained from the specified architecture, global "set ..." options,
|
||
and explicitly initialized INFO fields. */
|
||
|
||
void
|
||
gdbarch_info_fill (struct gdbarch *gdbarch, struct gdbarch_info *info)
|
||
{
|
||
/* "(gdb) set architecture ...". */
|
||
if (info->bfd_arch_info == NULL
|
||
&& !target_architecture_auto
|
||
&& gdbarch != NULL)
|
||
info->bfd_arch_info = gdbarch_bfd_arch_info (gdbarch);
|
||
if (info->bfd_arch_info == NULL
|
||
&& info->abfd != NULL
|
||
&& bfd_get_arch (info->abfd) != bfd_arch_unknown
|
||
&& bfd_get_arch (info->abfd) != bfd_arch_obscure)
|
||
info->bfd_arch_info = bfd_get_arch_info (info->abfd);
|
||
if (info->bfd_arch_info == NULL
|
||
&& gdbarch != NULL)
|
||
info->bfd_arch_info = gdbarch_bfd_arch_info (gdbarch);
|
||
|
||
/* "(gdb) set byte-order ...". */
|
||
if (info->byte_order == BFD_ENDIAN_UNKNOWN
|
||
&& !target_byte_order_auto
|
||
&& gdbarch != NULL)
|
||
info->byte_order = gdbarch_byte_order (gdbarch);
|
||
/* From the INFO struct. */
|
||
if (info->byte_order == BFD_ENDIAN_UNKNOWN
|
||
&& info->abfd != NULL)
|
||
info->byte_order = (bfd_big_endian (info->abfd) ? BFD_ENDIAN_BIG
|
||
: bfd_little_endian (info->abfd) ? BFD_ENDIAN_LITTLE
|
||
: BFD_ENDIAN_UNKNOWN);
|
||
/* From the current target. */
|
||
if (info->byte_order == BFD_ENDIAN_UNKNOWN
|
||
&& gdbarch != NULL)
|
||
info->byte_order = gdbarch_byte_order (gdbarch);
|
||
|
||
/* "(gdb) set osabi ...". Handled by gdbarch_lookup_osabi. */
|
||
if (info->osabi == GDB_OSABI_UNINITIALIZED)
|
||
info->osabi = gdbarch_lookup_osabi (info->abfd);
|
||
if (info->osabi == GDB_OSABI_UNINITIALIZED
|
||
&& gdbarch != NULL)
|
||
info->osabi = gdbarch_osabi (gdbarch);
|
||
|
||
/* Must have at least filled in the architecture. */
|
||
gdb_assert (info->bfd_arch_info != NULL);
|
||
}
|
||
|
||
/* */
|
||
|
||
extern initialize_file_ftype _initialize_gdbarch_utils; /* -Wmissing-prototypes */
|
||
|
||
void
|
||
_initialize_gdbarch_utils (void)
|
||
{
|
||
struct cmd_list_element *c;
|
||
c = add_set_enum_cmd ("endian", class_support,
|
||
endian_enum, &set_endian_string,
|
||
"Set endianness of target.",
|
||
&setlist);
|
||
set_cmd_sfunc (c, set_endian);
|
||
/* Don't use set_from_show - need to print both auto/manual and
|
||
current setting. */
|
||
add_cmd ("endian", class_support, show_endian,
|
||
"Show the current byte-order", &showlist);
|
||
}
|