* config/i386/i386sol2.mt (TDEPFILES): Add i386-sol2-tdep.o and

[deliverable/binutils-gdb.git] / gdb / i386bsd-nat.c

diff --git a/gdb/i386bsd-nat.c b/gdb/i386bsd-nat.c
index ad5a3013f34092f89cbf71945281ecd9e9aee3ee..a941d5b468c639a82ad3bb2a85b5ffec3efe663a 100644 (file)
--- a/gdb/i386bsd-nat.c
+++ b/gdb/i386bsd-nat.c
@@ -382,19 +382,39 @@ kernel_u_size (void)
   return (sizeof (struct user));
 }
 \f
-/* See i386bsd-tdep.c.  */
-extern int i386bsd_sigcontext_pc_offset;
-
 void
 _initialize_i386bsd_nat (void)
 {
+  int sc_pc_offset;
+
   /* To support the recognition of signal handlers, i386bsd-tdep.c
      hardcodes some constants.  Inclusion of this file means that we
      are compiling a native debugger, which means that we can use the
      system header files and sysctl(3) to get at the relevant
      information.  */
 
+#if defined (__FreeBSD_version) && __FreeBSD_version >= 400011
+  extern int i386fbsd4_sc_pc_offset;
+#define SC_PC_OFFSET i386fbsd4_sc_pc_offset
+#elif defined (NetBSD) || defined (__NetBSD_Version__)
+  extern int i386nbsd_sc_pc_offset;
+#define SC_PC_OFFSET i386nbsd_sc_pc_offset
+#else
+  extern int i386bsd_sc_pc_offset;
+#define SC_PC_OFFSET i386bsd_sc_pc_offset
+#endif
+
   /* Override the default value for the offset of the program counter
      in the sigcontext structure.  */
-  i386bsd_sigcontext_pc_offset = offsetof (struct sigcontext, sc_pc);
+  sc_pc_offset = offsetof (struct sigcontext, sc_pc);
+
+  if (SC_PC_OFFSET != sc_pc_offset)
+    {
+      warning ("\
+offsetof (struct sigcontext, sc_pc) yields %d instead of %d.\n\
+Please report this to <bug-gdb@gnu.org>.",
+              sc_pc_offset, SC_PC_OFFSET);
+    }
+
+  SC_PC_OFFSET = sc_pc_offset;
 }