0.pre7.11:

[sbcl.git] / src / runtime / breakpoint.c

diff --git a/src/runtime/breakpoint.c b/src/runtime/breakpoint.c
index 9e95a8a..48f8aed 100644 (file)
--- a/src/runtime/breakpoint.c
+++ b/src/runtime/breakpoint.c
@@ -54,7 +54,15 @@ void breakpoint_remove(lispobj code_obj, int pc_offset,
 void breakpoint_do_displaced_inst(os_context_t* context,
                                  unsigned long orig_inst)
 {
-#if !defined(hpux) && !defined(irix) && !defined(__i386__)
+    /* on platforms with sigreturn(), we go directly back from
+     * arch_do_displaced_inst() to lisp code, so we need to clean up
+     * our bindings now.  (side note: I'd love to know in exactly what
+     * scenario the speed of breakpoint handling is critical enough to
+     * justify this maintenance mess)
+     *
+     * -dan 2001.08.09 */
+
+#if !(defined(hpux) || defined(irix) || defined(__i386__) || defined(alpha))
     undo_fake_foreign_function_call(context);
 #endif
     arch_do_displaced_inst(context, orig_inst);
@@ -122,7 +130,10 @@ static int compute_offset(os_context_t *context, lispobj code)
        }
     }
 }
-
+/* FIXME: I can see no really good reason these couldn't be merged, but haven't
+ * tried.  The sigprocmask() call would work just as well on alpha as it
+ * presumably does on x86   -dan 2001.08.10
+ */
 #ifndef __i386__
 void handle_breakpoint(int signal, siginfo_t *info, os_context_t *context)
 {