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binutils-gdb/gdb/gdbarch.c
Andrew Cagney 2e64ee9aae CARP: 
Pass gdbarch_info by value to the arch init function.
Review doco.
Update mips-tdep.c
1998-12-18 03:21:45 +00:00

1022 lines
27 KiB
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/* Semi-dynamic architecture support for GDB, the GNU debugger.
Copyright 1998, 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 "bfd.h"
#include "gdbcmd.h"
/* start-sanitize-carp start-sanitize-vr4xxx */
/* Convenience macro for allocting memory. */
#ifndef XMALLOC
#define XMALLOC(TYPE) (TYPE*) xmalloc (sizeof (TYPE))
#endif
/* end-sanitize-carp end-sanitize-vr4xxx */
/* Non-zero if we want to trace architecture code. */
#ifndef GDBARCH_DEBUG
#define GDBARCH_DEBUG 0
#endif
int gdbarch_debug = GDBARCH_DEBUG;
/* start-sanitize-carp start-sanitize-vr4xxx */
/* Maintain the struct gdbarch object */
struct gdbarch
{
/* basic architectural information */
const struct bfd_arch_info *bfd_arch_info;
int byte_order;
/* target specific vector. */
struct gdbarch_tdep *tdep;
/* per-architecture data-pointers */
int nr_data;
void **data;
/* per-architecture swap-regions */
struct gdbarch_swap *swap;
/* Multi-arch values.
When adding to the below you must also: declare/define set/get
value functions; override the corresponding macro in gdbarch.h;
if zero/NULL is not a suitable default, initialize the field in
gdbarch_alloc(); confirm that the target updated the value
correctly in verify_gdbarch(); add a fprintf_unfiltered call to
gdbarch_update() so that the new field is dumped out; append an
initial value to the static variable ``default_gdbarch'' (base
values on the host's c-type system). */
int long_bit;
int long_long_bit;
int ptr_bit;
};
struct gdbarch_tdep *
gdbarch_tdep (gdbarch)
struct gdbarch *gdbarch;
{
return gdbarch->tdep;
}
const struct bfd_arch_info *
gdbarch_bfd_arch_info (gdbarch)
struct gdbarch *gdbarch;
{
return gdbarch->bfd_arch_info;
}
int
gdbarch_byte_order (gdbarch)
struct gdbarch *gdbarch;
{
return gdbarch->byte_order;
}
int
gdbarch_long_bit (gdbarch)
struct gdbarch *gdbarch;
{
return gdbarch->long_bit;
}
void
set_gdbarch_long_bit (gdbarch, long_bit)
struct gdbarch *gdbarch;
int long_bit;
{
gdbarch->long_bit = long_bit;
}
int
gdbarch_long_long_bit (gdbarch)
struct gdbarch *gdbarch;
{
return gdbarch->long_long_bit;
}
void
set_gdbarch_long_long_bit (gdbarch, long_long_bit)
struct gdbarch *gdbarch;
int long_long_bit;
{
gdbarch->long_long_bit = long_long_bit;
}
int
gdbarch_ptr_bit (gdbarch)
struct gdbarch *gdbarch;
{
return gdbarch->ptr_bit;
}
void
set_gdbarch_ptr_bit (gdbarch, ptr_bit)
struct gdbarch *gdbarch;
int ptr_bit;
{
gdbarch->ptr_bit = ptr_bit;
}
/* Ensure that all values in a GDBARCH are reasonable. XXX - should
this instead return a success/fail indication? */
static void
verify_gdbarch (gdbarch)
struct gdbarch *gdbarch;
{
/* fundamental */
if (gdbarch->byte_order == 0)
fatal ("verify_gdbarch: byte-order unset");
if (gdbarch->bfd_arch_info == NULL)
fatal ("verify_gdbarch: bfd_arch_info unset");
/* more general */
if (gdbarch->long_bit == 0)
fatal ("verify_gdbarch: long_bit invalid");
if (gdbarch->long_long_bit == 0)
fatal ("verify_gdbarch: long_long_bit invalid");
if (gdbarch->ptr_bit == 0)
fatal ("verify_gdbarch: ptr_bit invalid");
}
/* Keep a registrary of per-architecture data-pointers required by GDB
modules. */
struct gdbarch_data
{
int index;
};
struct gdbarch_data_registration
{
gdbarch_data_ftype *init;
struct gdbarch_data *data;
struct gdbarch_data_registration *next;
};
struct gdbarch_data_registrary
{
int nr;
struct gdbarch_data_registration *registrations;
};
struct gdbarch_data_registrary gdbarch_data_registrary =
{
0, NULL,
};
struct gdbarch_data *
register_gdbarch_data (init)
gdbarch_data_ftype *init;
{
struct gdbarch_data_registration **curr;
for (curr = &gdbarch_data_registrary.registrations;
(*curr) != NULL;
curr = &(*curr)->next);
(*curr) = XMALLOC (struct gdbarch_data_registration);
(*curr)->next = NULL;
(*curr)->init = init;
(*curr)->data = XMALLOC (struct gdbarch_data);
(*curr)->data->index = gdbarch_data_registrary.nr++;
return (*curr)->data;
}
/* Walk through all the registered users initializing each in turn. */
static void init_gdbarch_data PARAMS ((struct gdbarch *));
static void
init_gdbarch_data (gdbarch)
struct gdbarch *gdbarch;
{
struct gdbarch_data_registration *rego;
gdbarch->nr_data = gdbarch_data_registrary.nr + 1;
gdbarch->data = xmalloc (sizeof (void*) * gdbarch->nr_data);
for (rego = gdbarch_data_registrary.registrations;
rego != NULL;
rego = rego->next)
{
if (rego->data->index < gdbarch->nr_data)
gdbarch->data[rego->data->index] = rego->init ();
}
}
/* Return the current value of the specified per-architecture
data-pointer. */
void *
gdbarch_data (data)
struct gdbarch_data *data;
{
if (data->index >= current_gdbarch->nr_data)
fatal ("gdbarch_data: request for non-existant data.");
return current_gdbarch->data[data->index];
}
/* Keep a registrary of swaped data required by GDB modules. */
struct gdbarch_swap
{
void *swap;
struct gdbarch_swap_registration *source;
struct gdbarch_swap *next;
};
struct gdbarch_swap_registration
{
void *data;
unsigned long sizeof_data;
gdbarch_swap_ftype *init;
struct gdbarch_swap_registration *next;
};
struct gdbarch_swap_registrary
{
int nr;
struct gdbarch_swap_registration *registrations;
};
struct gdbarch_swap_registrary gdbarch_swap_registrary =
{
0, NULL,
};
void
register_gdbarch_swap (data, sizeof_data, init)
void *data;
unsigned long sizeof_data;
gdbarch_swap_ftype *init;
{
struct gdbarch_swap_registration **rego;
for (rego = &gdbarch_swap_registrary.registrations;
(*rego) != NULL;
rego = &(*rego)->next);
(*rego) = XMALLOC (struct gdbarch_swap_registration);
(*rego)->next = NULL;
(*rego)->init = init;
(*rego)->data = data;
(*rego)->sizeof_data = sizeof_data;
}
static void init_gdbarch_swap PARAMS ((struct gdbarch *));
static void
init_gdbarch_swap (gdbarch)
struct gdbarch *gdbarch;
{
struct gdbarch_swap_registration *rego;
struct gdbarch_swap **curr = &gdbarch->swap;
for (rego = gdbarch_swap_registrary.registrations;
rego != NULL;
rego = rego->next)
{
if (rego->data != NULL)
{
(*curr) = XMALLOC (struct gdbarch_swap);
(*curr)->source = rego;
(*curr)->swap = xmalloc (rego->sizeof_data);
(*curr)->next = NULL;
memset (rego->data, 0, rego->sizeof_data);
curr = &(*curr)->next;
}
if (rego->init != NULL)
rego->init ();
}
}
static void swapout_gdbarch_swap PARAMS ((struct gdbarch *));
static void
swapout_gdbarch_swap (gdbarch)
struct gdbarch *gdbarch;
{
struct gdbarch_swap *curr;
for (curr = gdbarch->swap;
curr != NULL;
curr = curr->next)
memcpy (curr->swap, curr->source->data, curr->source->sizeof_data);
}
static void swapin_gdbarch_swap PARAMS ((struct gdbarch *));
static void
swapin_gdbarch_swap (gdbarch)
struct gdbarch *gdbarch;
{
struct gdbarch_swap *curr;
for (curr = gdbarch->swap;
curr != NULL;
curr = curr->next)
memcpy (curr->source->data, curr->swap, curr->source->sizeof_data);
}
/* Keep a registrary of the architectures known by GDB. */
struct gdbarch_init_registration
{
enum bfd_architecture bfd_architecture;
gdbarch_init_ftype *init;
struct gdbarch_list *arches;
struct gdbarch_init_registration *next;
};
static struct gdbarch_init_registration *gdbarch_init_registrary = NULL;
void
register_gdbarch_init (bfd_architecture, init)
enum bfd_architecture bfd_architecture;
gdbarch_init_ftype *init;
{
struct gdbarch_init_registration **curr;
const struct bfd_arch_info *bfd_arch_info;
/* Check that BFD reconizes this architecture */
bfd_arch_info = bfd_lookup_arch (bfd_architecture, 0);
if (bfd_arch_info == NULL)
{
fatal ("Attempt to register unknown architecture (%d)", bfd_architecture);
}
/* Check that we haven't seen this architecture before */
for (curr = &gdbarch_init_registrary;
(*curr) != NULL;
curr = &(*curr)->next)
{
if (bfd_architecture == (*curr)->bfd_architecture)
fatal ("Duplicate registraration of architecture (%s)",
bfd_arch_info->printable_name);
}
/* log it */
if (gdbarch_debug)
fprintf_unfiltered (stderr, "register_gdbarch_init (%s, 0x%08lx)\n",
bfd_arch_info->printable_name,
(long) init);
/* Append it */
(*curr) = XMALLOC (struct gdbarch_init_registration);
(*curr)->bfd_architecture = bfd_architecture;
(*curr)->init = init;
(*curr)->arches = NULL;
(*curr)->next = NULL;
}
/* Look for an architecture using gdbarch_info. Base search on only
BFD_ARCH_INFO and BYTE_ORDER. */
struct gdbarch_list *
gdbarch_list_lookup_by_info (arches, info)
struct gdbarch_list *arches;
const struct gdbarch_info *info;
{
for (; arches != NULL; arches = arches->next)
{
if (info->bfd_arch_info != arches->gdbarch->bfd_arch_info)
continue;
if (info->byte_order != arches->gdbarch->byte_order)
continue;
return arches;
}
return NULL;
}
/* Create a new ``struct gdbarch'' based in information provied by
``struct gdbarch_info'' */
struct gdbarch *
gdbarch_alloc (info, tdep)
const struct gdbarch_info *info;
struct gdbarch_tdep *tdep;
{
struct gdbarch *gdbarch = XMALLOC (struct gdbarch);
memset (gdbarch, 0, sizeof (*gdbarch));
gdbarch->tdep = tdep;
gdbarch->bfd_arch_info = info->bfd_arch_info;
gdbarch->byte_order = info->byte_order;
return gdbarch;
}
/* Update the current architecture. Return ZERO if the update request
failed. */
int
gdbarch_update (info)
struct gdbarch_info info;
{
struct gdbarch *new_gdbarch;
struct gdbarch_list **list;
struct gdbarch_init_registration *rego;
/* Fill in any missing bits. Most important is the bfd_architecture
which is used to select the target architecture. */
if (info.bfd_architecture == bfd_arch_unknown)
{
if (info.bfd_arch_info != NULL)
info.bfd_architecture = info.bfd_arch_info->arch;
else if (info.abfd != NULL)
info.bfd_architecture = bfd_get_arch (info.abfd);
/* FIXME - should query BFD for its default architecture. */
else
info.bfd_architecture = current_gdbarch->bfd_arch_info->arch;
}
if (info.bfd_arch_info == NULL)
{
if (target_architecture_auto && info.abfd != NULL)
info.bfd_arch_info = bfd_get_arch_info (info.abfd);
else
info.bfd_arch_info = current_gdbarch->bfd_arch_info;
}
if (info.byte_order == 0)
{
if (target_byte_order_auto && info.abfd != NULL)
info.byte_order = (bfd_big_endian (info.abfd) ? BIG_ENDIAN
: bfd_little_endian (info.abfd) ? LITTLE_ENDIAN
: 0);
else
info.byte_order = current_gdbarch->byte_order;
}
/* A default for abfd? */
/* Find the target that knows about this architecture. */
for (rego = gdbarch_init_registrary;
rego != NULL && rego->bfd_architecture != info.bfd_architecture;
rego = rego->next);
if (rego == NULL)
{
if (gdbarch_debug)
fprintf_unfiltered (stderr, "gdbarch_update: No matching architecture\n");
return 0;
}
if (gdbarch_debug)
{
fprintf_unfiltered (stderr,
"gdbarch_update: info.bfd_architecture %d (%s)\n",
info.bfd_architecture,
bfd_lookup_arch (info.bfd_architecture, 0)->printable_name);
fprintf_unfiltered (stderr,
"gdbarch_update: info.bfd_arch_info %s\n",
(info.bfd_arch_info != NULL
? info.bfd_arch_info->printable_name
: "(null)"));
fprintf_unfiltered (stderr,
"gdbarch_update: info.byte_order %d (%s)\n",
info.byte_order,
(info.byte_order == BIG_ENDIAN ? "big"
: info.byte_order == LITTLE_ENDIAN ? "little"
: "default"));
fprintf_unfiltered (stderr,
"gdbarch_update: info.abfd 0x%lx\n",
(long) info.abfd);
fprintf_unfiltered (stderr,
"gdbarch_update: info.tdep_info 0x%lx\n",
(long) info.tdep_info);
}
/* Ask the target for a replacement architecture. */
new_gdbarch = rego->init (info, rego->arches);
/* Did the target like it? No. Reject the change. */
if (new_gdbarch == NULL)
{
if (gdbarch_debug)
fprintf_unfiltered (stderr, "gdbarch_update: Target rejected architecture\n");
return 0;
}
/* Did the architecture change? No. Do nothing. */
if (current_gdbarch == new_gdbarch)
{
if (gdbarch_debug)
fprintf_unfiltered (stderr, "gdbarch_update: Architecture 0x%08lx (%s) unchanged\n",
(long) new_gdbarch,
new_gdbarch->bfd_arch_info->printable_name);
return 1;
}
/* Swap all data belonging to the old target out */
swapout_gdbarch_swap (current_gdbarch);
/* Is this a pre-existing architecture? Yes. Swap it in. */
for (list = &rego->arches;
(*list) != NULL;
list = &(*list)->next)
{
if ((*list)->gdbarch == new_gdbarch)
{
if (gdbarch_debug)
fprintf_unfiltered (stderr, "gdbarch_update: Previous architecture 0x%08lx (%s) selected\n",
(long) new_gdbarch,
new_gdbarch->bfd_arch_info->printable_name);
current_gdbarch = new_gdbarch;
swapin_gdbarch_swap (new_gdbarch);
return 1;
}
}
/* Append this new architecture to this targets list. */
(*list) = XMALLOC (struct gdbarch_list);
(*list)->next = NULL;
(*list)->gdbarch = new_gdbarch;
/* Switch to this new architecture. Dump it out. */
current_gdbarch = new_gdbarch;
if (gdbarch_debug)
{
fprintf_unfiltered (stderr,
"gdbarch_update: New architecture 0x%08lx (%s) selected\n",
(long) new_gdbarch,
new_gdbarch->bfd_arch_info->printable_name);
fprintf_unfiltered (stderr,
"gdbarch_update: TARGET_BYTE_ORDER = %d (%s)\n",
TARGET_BYTE_ORDER,
(TARGET_BYTE_ORDER == BIG_ENDIAN ? "big"
: TARGET_BYTE_ORDER == LITTLE_ENDIAN ? "little"
: "default"));
fprintf_unfiltered (stderr,
"gdbarch_update: TARGET_LONG_BIT = %d\n",
TARGET_LONG_BIT);
fprintf_unfiltered (stderr,
"gdbarch_update: TARGET_LONG_LONG_BIT = %d\n",
TARGET_LONG_LONG_BIT);
fprintf_unfiltered (stderr,
"gdbarch_update: TARGET_PTR_BIT = %d\n",
TARGET_PTR_BIT);
}
/* Check that the newly installed architecture is valid. */
verify_gdbarch (new_gdbarch);
/* Initialize the per-architecture memory (swap) areas.
CURRENT_GDBARCH must be update before these modules are
called. */
init_gdbarch_swap (new_gdbarch);
/* Initialize the per-architecture data-pointer of all parties that
registered an interest in this architecture. CURRENT_GDBARCH
must be updated before these modules are called. */
init_gdbarch_data (new_gdbarch);
return 1;
}
/* end-sanitize-carp end-sanitize-vr4xxx */
/* Functions to manipulate the endianness of the target. */
#ifdef TARGET_BYTE_ORDER_SELECTABLE
/* compat - Catch old targets that expect a selectable byte-order to
default to BIG_ENDIAN */
#ifndef TARGET_BYTE_ORDER_DEFAULT
#define TARGET_BYTE_ORDER_DEFAULT BIG_ENDIAN
#endif
#endif
#ifndef TARGET_BYTE_ORDER_DEFAULT
/* compat - Catch old non byte-order selectable targets that do not
define TARGET_BYTE_ORDER_DEFAULT and instead expect
TARGET_BYTE_ORDER to be used as the default. For targets that
defined neither TARGET_BYTE_ORDER nor TARGET_BYTE_ORDER_DEFAULT the
below will get a strange compiler warning. */
#define TARGET_BYTE_ORDER_DEFAULT TARGET_BYTE_ORDER
#endif
int target_byte_order = TARGET_BYTE_ORDER_DEFAULT;
int target_byte_order_auto = 1;
/* Chain containing the \"set endian\" commands. */
static struct cmd_list_element *endianlist = NULL;
/* Called by ``show endian''. */
static void show_endian PARAMS ((char *, int));
static void
show_endian (args, from_tty)
char *args;
int from_tty;
{
char *msg =
(TARGET_BYTE_ORDER_AUTO
? "The target endianness is set automatically (currently %s endian)\n"
: "The target is assumed to be %s endian\n");
printf_unfiltered (msg, (TARGET_BYTE_ORDER == BIG_ENDIAN ? "big" : "little"));
}
/* Called if the user enters ``set endian'' without an argument. */
static void set_endian PARAMS ((char *, int));
static void
set_endian (args, from_tty)
char *args;
int from_tty;
{
printf_unfiltered ("\"set endian\" must be followed by \"auto\", \"big\" or \"little\".\n");
show_endian (args, from_tty);
}
/* Called by ``set endian big''. */
static void set_endian_big PARAMS ((char *, int));
static void
set_endian_big (args, from_tty)
char *args;
int from_tty;
{
if (TARGET_BYTE_ORDER_SELECTABLE_P)
{
target_byte_order = BIG_ENDIAN;
target_byte_order_auto = 0;
/* start-sanitize-carp start-sanitize-vr4xxx */
if (GDB_MULTI_ARCH)
{
struct gdbarch_info info;
memset (&info, 0, sizeof info);
info.byte_order = BIG_ENDIAN;
gdbarch_update (info);
}
/* end-sanitize-carp end-sanitize-vr4xxx */
}
else
{
printf_unfiltered ("Byte order is not selectable.");
show_endian (args, from_tty);
}
}
/* Called by ``set endian little''. */
static void set_endian_little PARAMS ((char *, int));
static void
set_endian_little (args, from_tty)
char *args;
int from_tty;
{
if (TARGET_BYTE_ORDER_SELECTABLE_P)
{
target_byte_order = LITTLE_ENDIAN;
target_byte_order_auto = 0;
/* start-sanitize-carp start-sanitize-vr4xxx */
if (GDB_MULTI_ARCH)
{
struct gdbarch_info info;
memset (&info, 0, sizeof info);
info.byte_order = LITTLE_ENDIAN;
gdbarch_update (info);
}
/* end-sanitize-carp end-sanitize-vr4xxx */
}
else
{
printf_unfiltered ("Byte order is not selectable.");
show_endian (args, from_tty);
}
}
/* Called by ``set endian auto''. */
static void set_endian_auto PARAMS ((char *, int));
static void
set_endian_auto (args, from_tty)
char *args;
int from_tty;
{
if (TARGET_BYTE_ORDER_SELECTABLE_P)
{
target_byte_order_auto = 1;
}
else
{
printf_unfiltered ("Byte order is not selectable.");
show_endian (args, from_tty);
}
}
/* Set the endianness from a BFD. */
static void set_endian_from_file PARAMS ((bfd *));
static void
set_endian_from_file (abfd)
bfd *abfd;
{
if (TARGET_BYTE_ORDER_SELECTABLE_P)
{
int want;
if (bfd_big_endian (abfd))
want = BIG_ENDIAN;
else
want = LITTLE_ENDIAN;
if (TARGET_BYTE_ORDER_AUTO)
target_byte_order = want;
else if (TARGET_BYTE_ORDER != want)
warning ("%s endian file does not match %s endian target.",
want == BIG_ENDIAN ? "big" : "little",
TARGET_BYTE_ORDER == BIG_ENDIAN ? "big" : "little");
}
else
{
if (bfd_big_endian (abfd)
? TARGET_BYTE_ORDER != BIG_ENDIAN
: TARGET_BYTE_ORDER == BIG_ENDIAN)
warning ("%s endian file does not match %s endian target.",
bfd_big_endian (abfd) ? "big" : "little",
TARGET_BYTE_ORDER == BIG_ENDIAN ? "big" : "little");
}
}
/* Functions to manipulate the architecture of the target */
int target_architecture_auto = 1;
extern const struct bfd_arch_info bfd_default_arch_struct;
const struct bfd_arch_info *target_architecture = &bfd_default_arch_struct;
int (*target_architecture_hook) PARAMS ((const struct bfd_arch_info *ap));
/* Do the real work of changing the current architecture */
static void
set_arch (arch)
const struct bfd_arch_info *arch;
{
/* FIXME: Is it compatible with gdb? */
/* Check with the target on the setting */
if (target_architecture_hook != NULL
&& !target_architecture_hook (arch))
printf_unfiltered ("Target does not support `%s' architecture.\n",
arch->printable_name);
else
{
target_architecture_auto = 0;
target_architecture = arch;
}
}
/* Called if the user enters ``show architecture'' without an argument. */
static void show_architecture PARAMS ((char *, int));
static void
show_architecture (args, from_tty)
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 PARAMS ((char *, int));
static void
set_architecture (args, from_tty)
char *args;
int from_tty;
{
if (args == NULL)
{
printf_unfiltered ("\"set architecture\" must be followed by \"auto\" or an architecture name.\n");
}
else if (strcmp (args, "auto") == 0)
{
target_architecture_auto = 1;
}
/* start-sanitize-carp start-sanitize-vr4xxx */
else if (GDB_MULTI_ARCH)
{
const struct bfd_arch_info *arch = bfd_scan_arch (args);
if (arch == NULL)
printf_unfiltered ("Architecture `%s' not reconized.\n", args);
else
{
struct gdbarch_info info;
memset (&info, 0, sizeof info);
info.bfd_arch_info = arch;
if (gdbarch_update (info))
target_architecture_auto = 0;
else
printf_unfiltered ("Architecture `%s' not reconized.\n", args);
}
}
/* end-sanitize-carp end-sanitize-vr4xxx */
else
{
const struct bfd_arch_info *arch = bfd_scan_arch (args);
if (arch != NULL)
set_arch (arch);
else
printf_unfiltered ("Architecture `%s' not reconized.\n", args);
}
}
/* Called if the user enters ``info architecture'' without an argument. */
static void info_architecture PARAMS ((char *, int));
static void
info_architecture (args, from_tty)
char *args;
int from_tty;
{
enum bfd_architecture a;
/* start-sanitize-carp start-sanitize-vr4xxx */
if (GDB_MULTI_ARCH)
{
if (gdbarch_init_registrary != NULL)
{
struct gdbarch_init_registration *rego;
printf_filtered ("Available architectures are:\n");
for (rego = gdbarch_init_registrary;
rego != NULL;
rego = rego->next)
{
const struct bfd_arch_info *ap;
ap = bfd_lookup_arch (rego->bfd_architecture, 0);
if (ap != NULL)
{
do
{
printf_filtered (" %s", ap->printable_name);
ap = ap->next;
}
while (ap != NULL);
printf_filtered ("\n");
}
}
}
else
{
printf_filtered ("There are no available architectures.\n");
}
return;
}
/* end-sanitize-carp end-sanitize-vr4xxx */
printf_filtered ("Available architectures are:\n");
for (a = bfd_arch_obscure + 1; a < bfd_arch_last; a++)
{
const struct bfd_arch_info *ap = bfd_lookup_arch (a, 0);
if (ap != NULL)
{
do
{
printf_filtered (" %s", ap->printable_name);
ap = ap->next;
}
while (ap != NULL);
printf_filtered ("\n");
}
}
}
/* Set the architecture from arch/machine */
void
set_architecture_from_arch_mach (arch, mach)
enum bfd_architecture arch;
unsigned long mach;
{
const struct bfd_arch_info *wanted = bfd_lookup_arch (arch, mach);
if (wanted != NULL)
set_arch (wanted);
else
fatal ("hardwired architecture/machine not reconized");
}
/* Set the architecture from a BFD */
static void set_architecture_from_file PARAMS ((bfd *));
static void
set_architecture_from_file (abfd)
bfd *abfd;
{
const struct bfd_arch_info *wanted = bfd_get_arch_info (abfd);
if (target_architecture_auto)
{
if (target_architecture_hook != NULL
&& !target_architecture_hook (wanted))
warning ("Target may not support %s architecture",
wanted->printable_name);
target_architecture = wanted;
}
else if (wanted != target_architecture)
{
warning ("%s architecture file may be incompatible with %s target.",
wanted->printable_name,
target_architecture->printable_name);
}
}
/* Disassembler */
/* Pointer to the target-dependent disassembly function. */
int (*tm_print_insn) PARAMS ((bfd_vma, disassemble_info *));
disassemble_info tm_print_insn_info;
/* Set the dynamic target-system-dependant parameters (architecture,
byte-order) using information found in the BFD */
void
set_gdbarch_from_file (abfd)
bfd *abfd;
{
/* start-sanitize-carp start-sanitize-vr4xxx */
if (GDB_MULTI_ARCH)
{
struct gdbarch_info info;
memset (&info, 0, sizeof info);
info.abfd = abfd;
gdbarch_update (info);
return;
}
/* end-sanitize-carp end-sanitize-vr4xxx */
set_architecture_from_file (abfd);
set_endian_from_file (abfd);
}
/* start-sanitize-carp start-sanitize-vr4xxx */
/* The default architecture uses host values (for want of a better
choice). */
struct gdbarch default_gdbarch = {
/* basic architecture information */
&bfd_default_arch_struct,
TARGET_BYTE_ORDER_DEFAULT,
/* target specific vector */
NULL,
/*per-architecture data-pointers and swap regions */
0, NULL, NULL,
/* Multi-arch values */
8 * sizeof (long), /* long */
8 * sizeof (LONGEST), /* long long */
8 * sizeof (void*), /* ptr */
};
struct gdbarch *current_gdbarch = &default_gdbarch;
/* end-sanitize-carp end-sanitize-vr4xxx */
extern void _initialize_gdbarch PARAMS ((void));
void
_initialize_gdbarch ()
{
add_prefix_cmd ("endian", class_support, set_endian,
"Set endianness of target.",
&endianlist, "set endian ", 0, &setlist);
add_cmd ("big", class_support, set_endian_big,
"Set target as being big endian.", &endianlist);
add_cmd ("little", class_support, set_endian_little,
"Set target as being little endian.", &endianlist);
add_cmd ("auto", class_support, set_endian_auto,
"Select target endianness automatically.", &endianlist);
add_cmd ("endian", class_support, show_endian,
"Show endianness of target.", &showlist);
add_cmd ("architecture", class_support, set_architecture,
"Set architecture of target.", &setlist);
add_alias_cmd ("processor", "architecture", class_support, 1, &setlist);
add_cmd ("architecture", class_support, show_architecture,
"Show architecture of target.", &showlist);
add_cmd ("architecture", class_support, info_architecture,
"List supported target architectures", &infolist);
INIT_DISASSEMBLE_INFO_NO_ARCH (tm_print_insn_info, gdb_stdout, (fprintf_ftype)fprintf_filtered);
tm_print_insn_info.flavour = bfd_target_unknown_flavour;
tm_print_insn_info.read_memory_func = dis_asm_read_memory;
tm_print_insn_info.memory_error_func = dis_asm_memory_error;
tm_print_insn_info.print_address_func = dis_asm_print_address;
#ifdef MAINTENANCE_CMDS
add_show_from_set (add_set_cmd ("archdebug",
class_maintenance,
var_zinteger,
(char *)&gdbarch_debug,
"Set architecture debugging.\n\
When non-zero, architecture debugging is enabled.", &setlist),
&showlist);
#endif
}
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