Implement get_syscall_trapinfo for aarch64-linux

[deliverable/binutils-gdb.git] / gdb / armobsd-tdep.c

diff --git a/gdb/armobsd-tdep.c b/gdb/armobsd-tdep.c
index 0f5e7a4007d3b42e9cc028e511090d21c29a85c2..5ccf1d146d1283a5a8ec74a4fdb626b95e53ecfc 100644 (file)
--- a/gdb/armobsd-tdep.c
+++ b/gdb/armobsd-tdep.c
@@ -1,12 +1,12 @@
 /* Target-dependent code for OpenBSD/arm.
 
-   Copyright (C) 2006 Free Software Foundation, Inc.
+   Copyright (C) 2006-2016 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 2 of the License, or
+   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,
@@ -15,9 +15,7 @@
    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, write to the Free Software
-   Foundation, Inc., 51 Franklin Street, Fifth Floor,
-   Boston, MA 02110-1301, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include "defs.h"
 #include "osabi.h"
@@ -32,7 +30,7 @@
 
 static void
 armobsd_sigframe_init (const struct tramp_frame *self,
-                      struct frame_info *next_frame,
+                      struct frame_info *this_frame,
                       struct trad_frame_cache *cache,
                       CORE_ADDR func)
 {
@@ -41,7 +39,7 @@ armobsd_sigframe_init (const struct tramp_frame *self,
 
   /* We find the appropriate instance of `struct sigcontext' at a
      fixed offset in the signal frame.  */
-  sp = frame_unwind_register_signed (next_frame, ARM_SP_REGNUM);
+  sp = get_frame_register_signed (this_frame, ARM_SP_REGNUM);
   sigcontext_addr = sp + 16;
 
   /* PC.  */
@@ -70,6 +68,10 @@ static const struct tramp_frame armobsd_sigframe =
 };
 \f
 
+/* Override default thumb breakpoints.  */
+static const gdb_byte arm_obsd_thumb_le_breakpoint[] = {0xfe, 0xdf};
+static const gdb_byte arm_obsd_thumb_be_breakpoint[] = {0xdf, 0xfe};
+
 static void
 armobsd_init_abi (struct gdbarch_info info,
                  struct gdbarch *gdbarch)
@@ -88,11 +90,51 @@ armobsd_init_abi (struct gdbarch_info info,
 
   tdep->jb_pc = 24;
   tdep->jb_elt_size = 4;
+
+  set_gdbarch_iterate_over_regset_sections
+    (gdbarch, armbsd_iterate_over_regset_sections);
+
+  /* OpenBSD/arm uses -fpcc-struct-return by default.  */
+  tdep->struct_return = pcc_struct_return;
+
+  /* Single stepping.  */
+  set_gdbarch_software_single_step (gdbarch, arm_software_single_step);
+
+  /* Breakpoints.  */
+  switch (info.byte_order)
+    {
+    case BFD_ENDIAN_BIG:
+      tdep->thumb_breakpoint = arm_obsd_thumb_be_breakpoint;
+      tdep->thumb_breakpoint_size = sizeof (arm_obsd_thumb_be_breakpoint);
+      break;
+
+    case BFD_ENDIAN_LITTLE:
+      tdep->thumb_breakpoint = arm_obsd_thumb_le_breakpoint;
+      tdep->thumb_breakpoint_size = sizeof (arm_obsd_thumb_le_breakpoint);
+      break;
+    }
 }
+\f
+
+static enum gdb_osabi
+armobsd_core_osabi_sniffer (bfd *abfd)
+{
+  if (strcmp (bfd_get_target (abfd), "netbsd-core") == 0)
+    return GDB_OSABI_OPENBSD_ELF;
+
+  return GDB_OSABI_UNKNOWN;
+}
+
+/* Provide a prototype to silence -Wmissing-prototypes.  */
+extern initialize_file_ftype _initialize_armobsd_tdep;
 
 void
 _initialize_armobsd_tdep (void)
 {
+  /* BFD doesn't set a flavour for NetBSD style a.out core files.  */
+  gdbarch_register_osabi_sniffer (bfd_arch_arm, bfd_target_unknown_flavour,
+                                  armobsd_core_osabi_sniffer);
+
   gdbarch_register_osabi (bfd_arch_arm, 0, GDB_OSABI_OPENBSD_ELF,
                          armobsd_init_abi);
 }