| /* Target-dependent code for Newlib ARC. |
| |
| Copyright (C) 2016-2021 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."); |
| |
| 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) |
| { |
| 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); |
| } |