mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-27 03:51:15 +08:00
4a94e36819
This commit brings all the changes made by running gdb/copyright.py as per GDB's Start of New Year Procedure. For the avoidance of doubt, all changes in this commits were performed by the script.
94 lines
3.0 KiB
C
94 lines
3.0 KiB
C
/* Copyright (C) 2016-2022 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 3 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, see <http://www.gnu.org/licenses/>. */
|
|
|
|
#include "defs.h"
|
|
#include "objfiles.h"
|
|
#include "arm-tdep.h"
|
|
#include "osabi.h"
|
|
|
|
/* The gdbarch_register_osabi handler for ARM PikeOS; it performs
|
|
the gdbarch initialization for that platform. */
|
|
|
|
static void
|
|
arm_pikeos_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
|
|
{
|
|
/* Single stepping. */
|
|
set_gdbarch_software_single_step (gdbarch, arm_software_single_step);
|
|
}
|
|
|
|
/* The ARM PikeOS OSABI sniffer (see gdbarch_register_osabi_sniffer).
|
|
Returns GDB_OSABI_PIKEOS if the given BFD is a PikeOS binary,
|
|
GDB_OSABI_UNKNOWN otherwise. */
|
|
|
|
static enum gdb_osabi
|
|
arm_pikeos_osabi_sniffer (bfd *abfd)
|
|
{
|
|
long number_of_symbols;
|
|
long i;
|
|
int pikeos_stack_found = 0;
|
|
int pikeos_stack_size_found = 0;
|
|
|
|
/* The BFD target of PikeOS is really just standard elf, so we
|
|
cannot use it to detect this variant. The only common thing that
|
|
may be found in PikeOS modules are symbols _vm_stack/__p4_stack and
|
|
_vm_stack_size/__p4_stack_end. They are used to specify the stack
|
|
location and size; and defined by the default linker script.
|
|
|
|
OS ABI sniffers are called before the minimal symtabs are
|
|
created. So inspect the symbol table using BFD. */
|
|
|
|
long storage_needed = bfd_get_symtab_upper_bound (abfd);
|
|
if (storage_needed <= 0)
|
|
return GDB_OSABI_UNKNOWN;
|
|
|
|
gdb::unique_xmalloc_ptr<asymbol *> symbol_table
|
|
((asymbol **) xmalloc (storage_needed));
|
|
number_of_symbols = bfd_canonicalize_symtab (abfd, symbol_table.get ());
|
|
|
|
if (number_of_symbols <= 0)
|
|
return GDB_OSABI_UNKNOWN;
|
|
|
|
for (i = 0; i < number_of_symbols; i++)
|
|
{
|
|
const char *name = bfd_asymbol_name (symbol_table.get ()[i]);
|
|
|
|
if (strcmp (name, "_vm_stack") == 0
|
|
|| strcmp (name, "__p4_stack") == 0)
|
|
pikeos_stack_found = 1;
|
|
|
|
if (strcmp (name, "_vm_stack_size") == 0
|
|
|| strcmp (name, "__p4_stack_end") == 0)
|
|
pikeos_stack_size_found = 1;
|
|
}
|
|
|
|
if (pikeos_stack_found && pikeos_stack_size_found)
|
|
return GDB_OSABI_PIKEOS;
|
|
else
|
|
return GDB_OSABI_UNKNOWN;
|
|
}
|
|
|
|
void _initialize_arm_pikeos_tdep ();
|
|
void
|
|
_initialize_arm_pikeos_tdep ()
|
|
{
|
|
/* Register the sniffer for the PikeOS targets. */
|
|
gdbarch_register_osabi_sniffer (bfd_arch_arm, bfd_target_elf_flavour,
|
|
arm_pikeos_osabi_sniffer);
|
|
gdbarch_register_osabi (bfd_arch_arm, 0, GDB_OSABI_PIKEOS,
|
|
arm_pikeos_init_abi);
|
|
}
|