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- /* Target-dependent code for Newlib ARC.
- Copyright (C) 2016-2022 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"
- /* Print an "arc-newlib" debug statement. */
- #define arc_newlib_debug_printf(fmt, ...) \
- debug_prefixed_printf_cond (arc_debug, "arc-newlib", fmt, ##__VA_ARGS__)
- /* Implement the 'init_osabi' method of struct gdb_osabi_handler. */
- static void
- arc_newlib_init_osabi (struct gdbarch_info info, struct gdbarch *gdbarch)
- {
- arc_newlib_debug_printf ("Initialization.");
- arc_gdbarch_tdep *tdep = (arc_gdbarch_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)
- {
- arc_newlib_debug_printf ("OS/ABI sniffer.");
- /* 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;
- }
- void _initialize_arc_newlib_tdep ();
- void
- _initialize_arc_newlib_tdep ()
- {
- 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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