2002-09-25 Andrew Cagney <cagney@redhat.com>

[deliverable/binutils-gdb.git] / gdb / alpha-osf1-tdep.c

diff --git a/gdb/alpha-osf1-tdep.c b/gdb/alpha-osf1-tdep.c
index be8f7042bf08bb4daadd33fa9a8dfaa83a53a275..ece5e2694f24027694effe0422f6e03b6a8ea965 100644 (file)
--- a/gdb/alpha-osf1-tdep.c
+++ b/gdb/alpha-osf1-tdep.c
@@ -20,6 +20,7 @@
 
 #include "defs.h"
 #include "frame.h"
+#include "gdbcore.h"
 #include "value.h"
 
 #include "alpha-tdep.h"
@@ -43,6 +44,13 @@ alpha_osf1_pc_in_sigtramp (CORE_ADDR pc, char *func_name)
   return (func_name != NULL && STREQ ("__sigtramp", func_name));
 }
 
+static CORE_ADDR
+alpha_osf1_sigcontext_addr (struct frame_info *frame)
+{
+  return (read_memory_integer (frame->next ? frame->next->frame
+                                          : frame->frame, 8));
+}
+
 static void
 alpha_osf1_init_abi (struct gdbarch_info info,
                      struct gdbarch *gdbarch)
@@ -50,8 +58,13 @@ alpha_osf1_init_abi (struct gdbarch_info info,
   struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
 
   set_gdbarch_pc_in_sigtramp (gdbarch, alpha_osf1_pc_in_sigtramp);
+  /* The next/step support via procfs on OSF1 is broken when running
+     on multi-processor machines. We need to use software single stepping
+     instead.  */
+  set_gdbarch_software_single_step (gdbarch, alpha_software_single_step);
 
   tdep->skip_sigtramp_frame = alpha_osf1_skip_sigtramp_frame;
+  tdep->sigcontext_addr = alpha_osf1_sigcontext_addr;
 
   tdep->jb_pc = 2;
   tdep->jb_elt_size = 8;
@@ -60,5 +73,5 @@ alpha_osf1_init_abi (struct gdbarch_info info,
 void
 _initialize_alpha_osf1_tdep (void)
 {
-  alpha_gdbarch_register_os_abi (ALPHA_ABI_OSF1, alpha_osf1_init_abi);
+  gdbarch_register_osabi (bfd_arch_alpha, GDB_OSABI_OSF1, alpha_osf1_init_abi);
 }