diff options
| -rw-r--r-- | gdb/ChangeLog | 5 | ||||
| -rw-r--r-- | gdb/arc-newlib-tdep.c | 69 | ||||
| -rw-r--r-- | gdb/configure.tgt | 7 |
3 files changed, 80 insertions, 1 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index b346137..109aac9 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,5 +1,10 @@ 2016-10-12 Anton Kolesov <anton.kolesov@synopsys.com> + * arc-newlib-tdep.c: New file. + * configure.tgt: Add newlib support for ARC. + +2016-10-12 Anton Kolesov <anton.kolesov@synopsys.com> + * arc-tdep.h (struct gdbarch_tdep) <jb_pc>: New field. * arc-tdep.c (arc_get_longjmp_target): New function. (arc_gdbarch_init): Set get_longjmp_target if jb_pc is non-negative. diff --git a/gdb/arc-newlib-tdep.c b/gdb/arc-newlib-tdep.c new file mode 100644 index 0000000..d93bf85 --- /dev/null +++ b/gdb/arc-newlib-tdep.c @@ -0,0 +1,69 @@ +/* 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); +} diff --git a/gdb/configure.tgt b/gdb/configure.tgt index ef041de..a64fe42 100644 --- a/gdb/configure.tgt +++ b/gdb/configure.tgt @@ -83,8 +83,13 @@ am33_2.0*-*-linux*) solib-svr4.o" ;; +arc*-*-elf32) + # Target: baremetal ARC elf32 (newlib) target + gdb_target_obs="arc-newlib-tdep.o arc-tdep.o" + ;; + arc*-*-*) - # Target: baremetal ARC elf32 target + # Target: Unidentified ARC target gdb_target_obs="arc-tdep.o" ;; |