2e64ee9aae
Pass gdbarch_info by value to the arch init function. Review doco. Update mips-tdep.c
1021 lines
27 KiB
C
1021 lines
27 KiB
C
/* Semi-dynamic architecture support for GDB, the GNU debugger.
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Copyright 1998, Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#include "bfd.h"
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#include "gdbcmd.h"
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/* start-sanitize-carp start-sanitize-vr4xxx */
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/* Convenience macro for allocting memory. */
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#ifndef XMALLOC
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#define XMALLOC(TYPE) (TYPE*) xmalloc (sizeof (TYPE))
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#endif
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/* end-sanitize-carp end-sanitize-vr4xxx */
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/* Non-zero if we want to trace architecture code. */
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#ifndef GDBARCH_DEBUG
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#define GDBARCH_DEBUG 0
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#endif
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int gdbarch_debug = GDBARCH_DEBUG;
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/* start-sanitize-carp start-sanitize-vr4xxx */
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/* Maintain the struct gdbarch object */
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struct gdbarch
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{
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/* basic architectural information */
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const struct bfd_arch_info *bfd_arch_info;
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int byte_order;
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/* target specific vector. */
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struct gdbarch_tdep *tdep;
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/* per-architecture data-pointers */
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int nr_data;
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void **data;
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/* per-architecture swap-regions */
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struct gdbarch_swap *swap;
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/* Multi-arch values.
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When adding to the below you must also: declare/define set/get
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value functions; override the corresponding macro in gdbarch.h;
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if zero/NULL is not a suitable default, initialize the field in
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gdbarch_alloc(); confirm that the target updated the value
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correctly in verify_gdbarch(); add a fprintf_unfiltered call to
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gdbarch_update() so that the new field is dumped out; append an
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initial value to the static variable ``default_gdbarch'' (base
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values on the host's c-type system). */
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int long_bit;
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int long_long_bit;
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int ptr_bit;
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};
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struct gdbarch_tdep *
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gdbarch_tdep (gdbarch)
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struct gdbarch *gdbarch;
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{
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return gdbarch->tdep;
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}
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const struct bfd_arch_info *
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gdbarch_bfd_arch_info (gdbarch)
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struct gdbarch *gdbarch;
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{
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return gdbarch->bfd_arch_info;
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}
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int
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gdbarch_byte_order (gdbarch)
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struct gdbarch *gdbarch;
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{
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return gdbarch->byte_order;
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}
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int
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gdbarch_long_bit (gdbarch)
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struct gdbarch *gdbarch;
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{
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return gdbarch->long_bit;
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}
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void
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set_gdbarch_long_bit (gdbarch, long_bit)
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struct gdbarch *gdbarch;
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int long_bit;
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{
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gdbarch->long_bit = long_bit;
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}
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int
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gdbarch_long_long_bit (gdbarch)
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struct gdbarch *gdbarch;
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{
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return gdbarch->long_long_bit;
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}
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void
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set_gdbarch_long_long_bit (gdbarch, long_long_bit)
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struct gdbarch *gdbarch;
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int long_long_bit;
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{
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gdbarch->long_long_bit = long_long_bit;
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}
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int
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gdbarch_ptr_bit (gdbarch)
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struct gdbarch *gdbarch;
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{
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return gdbarch->ptr_bit;
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}
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void
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set_gdbarch_ptr_bit (gdbarch, ptr_bit)
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struct gdbarch *gdbarch;
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int ptr_bit;
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{
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gdbarch->ptr_bit = ptr_bit;
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}
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/* Ensure that all values in a GDBARCH are reasonable. XXX - should
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this instead return a success/fail indication? */
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static void
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verify_gdbarch (gdbarch)
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struct gdbarch *gdbarch;
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{
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/* fundamental */
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if (gdbarch->byte_order == 0)
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fatal ("verify_gdbarch: byte-order unset");
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if (gdbarch->bfd_arch_info == NULL)
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fatal ("verify_gdbarch: bfd_arch_info unset");
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/* more general */
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if (gdbarch->long_bit == 0)
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fatal ("verify_gdbarch: long_bit invalid");
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if (gdbarch->long_long_bit == 0)
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fatal ("verify_gdbarch: long_long_bit invalid");
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if (gdbarch->ptr_bit == 0)
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fatal ("verify_gdbarch: ptr_bit invalid");
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}
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/* Keep a registrary of per-architecture data-pointers required by GDB
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modules. */
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struct gdbarch_data
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{
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int index;
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};
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struct gdbarch_data_registration
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{
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gdbarch_data_ftype *init;
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struct gdbarch_data *data;
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struct gdbarch_data_registration *next;
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};
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struct gdbarch_data_registrary
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{
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int nr;
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struct gdbarch_data_registration *registrations;
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};
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struct gdbarch_data_registrary gdbarch_data_registrary =
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{
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0, NULL,
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};
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struct gdbarch_data *
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register_gdbarch_data (init)
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gdbarch_data_ftype *init;
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{
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struct gdbarch_data_registration **curr;
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for (curr = &gdbarch_data_registrary.registrations;
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(*curr) != NULL;
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curr = &(*curr)->next);
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(*curr) = XMALLOC (struct gdbarch_data_registration);
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(*curr)->next = NULL;
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(*curr)->init = init;
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(*curr)->data = XMALLOC (struct gdbarch_data);
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(*curr)->data->index = gdbarch_data_registrary.nr++;
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return (*curr)->data;
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}
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/* Walk through all the registered users initializing each in turn. */
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static void init_gdbarch_data PARAMS ((struct gdbarch *));
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static void
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init_gdbarch_data (gdbarch)
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struct gdbarch *gdbarch;
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{
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struct gdbarch_data_registration *rego;
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gdbarch->nr_data = gdbarch_data_registrary.nr + 1;
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gdbarch->data = xmalloc (sizeof (void*) * gdbarch->nr_data);
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for (rego = gdbarch_data_registrary.registrations;
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rego != NULL;
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rego = rego->next)
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{
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if (rego->data->index < gdbarch->nr_data)
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gdbarch->data[rego->data->index] = rego->init ();
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}
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}
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/* Return the current value of the specified per-architecture
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data-pointer. */
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void *
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gdbarch_data (data)
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struct gdbarch_data *data;
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{
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if (data->index >= current_gdbarch->nr_data)
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fatal ("gdbarch_data: request for non-existant data.");
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return current_gdbarch->data[data->index];
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}
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/* Keep a registrary of swaped data required by GDB modules. */
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struct gdbarch_swap
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{
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void *swap;
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struct gdbarch_swap_registration *source;
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struct gdbarch_swap *next;
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};
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struct gdbarch_swap_registration
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{
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void *data;
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unsigned long sizeof_data;
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gdbarch_swap_ftype *init;
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struct gdbarch_swap_registration *next;
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};
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struct gdbarch_swap_registrary
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{
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int nr;
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struct gdbarch_swap_registration *registrations;
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};
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struct gdbarch_swap_registrary gdbarch_swap_registrary =
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{
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0, NULL,
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};
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void
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register_gdbarch_swap (data, sizeof_data, init)
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void *data;
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unsigned long sizeof_data;
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gdbarch_swap_ftype *init;
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{
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struct gdbarch_swap_registration **rego;
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for (rego = &gdbarch_swap_registrary.registrations;
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(*rego) != NULL;
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rego = &(*rego)->next);
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(*rego) = XMALLOC (struct gdbarch_swap_registration);
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(*rego)->next = NULL;
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(*rego)->init = init;
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(*rego)->data = data;
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(*rego)->sizeof_data = sizeof_data;
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}
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static void init_gdbarch_swap PARAMS ((struct gdbarch *));
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static void
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init_gdbarch_swap (gdbarch)
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struct gdbarch *gdbarch;
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{
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struct gdbarch_swap_registration *rego;
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struct gdbarch_swap **curr = &gdbarch->swap;
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for (rego = gdbarch_swap_registrary.registrations;
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rego != NULL;
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rego = rego->next)
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{
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if (rego->data != NULL)
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{
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(*curr) = XMALLOC (struct gdbarch_swap);
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(*curr)->source = rego;
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(*curr)->swap = xmalloc (rego->sizeof_data);
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(*curr)->next = NULL;
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memset (rego->data, 0, rego->sizeof_data);
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curr = &(*curr)->next;
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}
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if (rego->init != NULL)
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rego->init ();
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}
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}
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static void swapout_gdbarch_swap PARAMS ((struct gdbarch *));
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static void
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swapout_gdbarch_swap (gdbarch)
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struct gdbarch *gdbarch;
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{
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struct gdbarch_swap *curr;
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for (curr = gdbarch->swap;
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curr != NULL;
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curr = curr->next)
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memcpy (curr->swap, curr->source->data, curr->source->sizeof_data);
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}
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static void swapin_gdbarch_swap PARAMS ((struct gdbarch *));
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static void
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swapin_gdbarch_swap (gdbarch)
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struct gdbarch *gdbarch;
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{
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struct gdbarch_swap *curr;
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for (curr = gdbarch->swap;
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curr != NULL;
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curr = curr->next)
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memcpy (curr->source->data, curr->swap, curr->source->sizeof_data);
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}
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/* Keep a registrary of the architectures known by GDB. */
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struct gdbarch_init_registration
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{
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enum bfd_architecture bfd_architecture;
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gdbarch_init_ftype *init;
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struct gdbarch_list *arches;
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struct gdbarch_init_registration *next;
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};
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static struct gdbarch_init_registration *gdbarch_init_registrary = NULL;
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void
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register_gdbarch_init (bfd_architecture, init)
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enum bfd_architecture bfd_architecture;
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gdbarch_init_ftype *init;
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{
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struct gdbarch_init_registration **curr;
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const struct bfd_arch_info *bfd_arch_info;
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/* Check that BFD reconizes this architecture */
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bfd_arch_info = bfd_lookup_arch (bfd_architecture, 0);
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if (bfd_arch_info == NULL)
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{
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fatal ("Attempt to register unknown architecture (%d)", bfd_architecture);
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}
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/* Check that we haven't seen this architecture before */
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for (curr = &gdbarch_init_registrary;
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(*curr) != NULL;
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curr = &(*curr)->next)
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{
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if (bfd_architecture == (*curr)->bfd_architecture)
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fatal ("Duplicate registraration of architecture (%s)",
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bfd_arch_info->printable_name);
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}
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/* log it */
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if (gdbarch_debug)
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fprintf_unfiltered (stderr, "register_gdbarch_init (%s, 0x%08lx)\n",
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bfd_arch_info->printable_name,
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(long) init);
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/* Append it */
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(*curr) = XMALLOC (struct gdbarch_init_registration);
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(*curr)->bfd_architecture = bfd_architecture;
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(*curr)->init = init;
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(*curr)->arches = NULL;
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(*curr)->next = NULL;
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}
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/* Look for an architecture using gdbarch_info. Base search on only
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BFD_ARCH_INFO and BYTE_ORDER. */
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struct gdbarch_list *
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gdbarch_list_lookup_by_info (arches, info)
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struct gdbarch_list *arches;
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const struct gdbarch_info *info;
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{
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for (; arches != NULL; arches = arches->next)
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{
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if (info->bfd_arch_info != arches->gdbarch->bfd_arch_info)
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continue;
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if (info->byte_order != arches->gdbarch->byte_order)
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continue;
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return arches;
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}
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return NULL;
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}
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/* Create a new ``struct gdbarch'' based in information provied by
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``struct gdbarch_info'' */
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struct gdbarch *
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gdbarch_alloc (info, tdep)
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const struct gdbarch_info *info;
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struct gdbarch_tdep *tdep;
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{
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struct gdbarch *gdbarch = XMALLOC (struct gdbarch);
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memset (gdbarch, 0, sizeof (*gdbarch));
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gdbarch->tdep = tdep;
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gdbarch->bfd_arch_info = info->bfd_arch_info;
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gdbarch->byte_order = info->byte_order;
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return gdbarch;
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}
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/* Update the current architecture. Return ZERO if the update request
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failed. */
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int
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gdbarch_update (info)
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struct gdbarch_info info;
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{
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struct gdbarch *new_gdbarch;
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struct gdbarch_list **list;
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struct gdbarch_init_registration *rego;
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/* Fill in any missing bits. Most important is the bfd_architecture
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which is used to select the target architecture. */
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if (info.bfd_architecture == bfd_arch_unknown)
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{
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if (info.bfd_arch_info != NULL)
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info.bfd_architecture = info.bfd_arch_info->arch;
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else if (info.abfd != NULL)
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info.bfd_architecture = bfd_get_arch (info.abfd);
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/* FIXME - should query BFD for its default architecture. */
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else
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info.bfd_architecture = current_gdbarch->bfd_arch_info->arch;
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}
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if (info.bfd_arch_info == NULL)
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{
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if (target_architecture_auto && info.abfd != NULL)
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info.bfd_arch_info = bfd_get_arch_info (info.abfd);
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else
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info.bfd_arch_info = current_gdbarch->bfd_arch_info;
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}
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if (info.byte_order == 0)
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{
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if (target_byte_order_auto && info.abfd != NULL)
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info.byte_order = (bfd_big_endian (info.abfd) ? BIG_ENDIAN
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: bfd_little_endian (info.abfd) ? LITTLE_ENDIAN
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: 0);
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else
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info.byte_order = current_gdbarch->byte_order;
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}
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/* A default for abfd? */
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/* Find the target that knows about this architecture. */
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for (rego = gdbarch_init_registrary;
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rego != NULL && rego->bfd_architecture != info.bfd_architecture;
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rego = rego->next);
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if (rego == NULL)
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{
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if (gdbarch_debug)
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fprintf_unfiltered (stderr, "gdbarch_update: No matching architecture\n");
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return 0;
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}
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if (gdbarch_debug)
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{
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fprintf_unfiltered (stderr,
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"gdbarch_update: info.bfd_architecture %d (%s)\n",
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info.bfd_architecture,
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bfd_lookup_arch (info.bfd_architecture, 0)->printable_name);
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fprintf_unfiltered (stderr,
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"gdbarch_update: info.bfd_arch_info %s\n",
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(info.bfd_arch_info != NULL
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? info.bfd_arch_info->printable_name
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: "(null)"));
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fprintf_unfiltered (stderr,
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"gdbarch_update: info.byte_order %d (%s)\n",
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info.byte_order,
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(info.byte_order == BIG_ENDIAN ? "big"
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: info.byte_order == LITTLE_ENDIAN ? "little"
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: "default"));
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fprintf_unfiltered (stderr,
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"gdbarch_update: info.abfd 0x%lx\n",
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(long) info.abfd);
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fprintf_unfiltered (stderr,
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"gdbarch_update: info.tdep_info 0x%lx\n",
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(long) info.tdep_info);
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}
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/* Ask the target for a replacement architecture. */
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new_gdbarch = rego->init (info, rego->arches);
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/* Did the target like it? No. Reject the change. */
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if (new_gdbarch == NULL)
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{
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if (gdbarch_debug)
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fprintf_unfiltered (stderr, "gdbarch_update: Target rejected architecture\n");
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return 0;
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}
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/* Did the architecture change? No. Do nothing. */
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if (current_gdbarch == new_gdbarch)
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{
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if (gdbarch_debug)
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fprintf_unfiltered (stderr, "gdbarch_update: Architecture 0x%08lx (%s) unchanged\n",
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(long) new_gdbarch,
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new_gdbarch->bfd_arch_info->printable_name);
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return 1;
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}
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/* Swap all data belonging to the old target out */
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swapout_gdbarch_swap (current_gdbarch);
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/* Is this a pre-existing architecture? Yes. Swap it in. */
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|
for (list = ®o->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
|
|
}
|