2007-07-03 Ilko Iliev <iliev@ronetix.at>

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

diff --git a/gdb/armobsd-tdep.c b/gdb/armobsd-tdep.c
index 9b14382a7d77ada485a0c2b84cd4b50ef2a5a9ce..53e3d1654ae54ec6134103289f489edb4251d32c 100644 (file)
--- a/gdb/armobsd-tdep.c
+++ b/gdb/armobsd-tdep.c
@@ -1,6 +1,6 @@
 /* Target-dependent code for OpenBSD/arm.
 
-   Copyright (C) 2006 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2007 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -24,6 +24,8 @@
 #include "trad-frame.h"
 #include "tramp-frame.h"
 
+#include "gdb_string.h"
+
 #include "obsd-tdep.h"
 #include "arm-tdep.h"
 #include "solib-svr4.h"
@@ -70,6 +72,10 @@ static const struct tramp_frame armobsd_sigframe =
 };
 \f
 
+/* Override default thumb breakpoints.  */
+static const char arm_obsd_thumb_le_breakpoint[] = {0xfe, 0xdf};
+static const char arm_obsd_thumb_be_breakpoint[] = {0xdf, 0xfe};
+
 static void
 armobsd_init_abi (struct gdbarch_info info,
                  struct gdbarch *gdbarch)
@@ -89,13 +95,47 @@ armobsd_init_abi (struct gdbarch_info info,
   tdep->jb_pc = 24;
   tdep->jb_elt_size = 4;
 
+  set_gdbarch_regset_from_core_section
+    (gdbarch, armbsd_regset_from_core_section);
+
   /* 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;
 }
 
 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);
 }