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/* Target-dependent code for Newlib ARC.
Copyright (C) 2016 Free Software Foundation, Inc.
Contributed by Synopsys 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 "gdbarch.h"
#include "arc-tdep.h"
#include "osabi.h"
/* Implement the 'init_osabi' method of struct gdb_osabi_handler. */
static void
arc_newlib_init_osabi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
if (arc_debug)
debug_printf ("arc-newlib: Initialization.\n");
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
/* Offset of original PC in longjmp jump buffer (in registers). Value of PC
offset can be found in newlib/libc/machine/arc/setjmp.S. */
tdep->jb_pc = 18;
}
/* Recognize ARC Newlib object files. */
static enum gdb_osabi
arc_newlib_osabi_sniffer (bfd *abfd)
{
if (arc_debug)
debug_printf ("arc-newlib: OS/ABI sniffer.\n");
/* crt0.S in libgloss for ARC defines .ivt section for interrupt handlers.
If this section is not present then this is likely not a newlib - could be
a Linux application or some non-newlib baremetal application. */
if (bfd_get_section_by_name (abfd, ".ivt") != NULL)
return GDB_OSABI_NEWLIB;
else
return GDB_OSABI_UNKNOWN;
}
/* Provide a prototype to silence -Wmissing-prototypes. */
extern initialize_file_ftype _initialize_arc_newlib_tdep;
void
_initialize_arc_newlib_tdep (void)
{
gdbarch_register_osabi_sniffer (bfd_arch_arc, bfd_target_elf_flavour,
arc_newlib_osabi_sniffer);
gdbarch_register_osabi (bfd_arch_arc, 0, GDB_OSABI_NEWLIB,
arc_newlib_init_osabi);
}
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