X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fruntime%2Finterrupt.c;h=123a57635e9068881e97cb449567ff1482bd853b;hb=743831e679b673a5680a0afd8402911516bf50e2;hp=294fc64abab1d3689527c27a21a7071eb2c630dd;hpb=58513220fcf87e161a5e0d3fbadd76c45f27d584;p=sbcl.git

diff --git a/src/runtime/interrupt.c b/src/runtime/interrupt.c
index 294fc64..123a576 100644
--- a/src/runtime/interrupt.c
+++ b/src/runtime/interrupt.c
@@ -1271,7 +1271,7 @@ interrupt_handle_now_handler(int signal, siginfo_t *info, void *void_context)
         || (signal == SIGEMT)
 #endif
         )
-        corruption_warning_and_maybe_lose("Signal %d recieved", signal);
+        corruption_warning_and_maybe_lose("Signal %d received", signal);
 #endif
     interrupt_handle_now(signal, info, context);
     RESTORE_ERRNO;
@@ -1485,19 +1485,37 @@ undefined_alien_function(void)
     funcall0(StaticSymbolFunction(UNDEFINED_ALIEN_FUNCTION_ERROR));
 }
 
+void lower_thread_control_stack_guard_page(struct thread *th)
+{
+    protect_control_stack_guard_page(0, th);
+    protect_control_stack_return_guard_page(1, th);
+    th->control_stack_guard_page_protected = NIL;
+    fprintf(stderr, "INFO: Control stack guard page unprotected\n");
+}
+
+void reset_thread_control_stack_guard_page(struct thread *th)
+{
+    memset(CONTROL_STACK_GUARD_PAGE(th), 0, os_vm_page_size);
+    protect_control_stack_guard_page(1, th);
+    protect_control_stack_return_guard_page(0, th);
+    th->control_stack_guard_page_protected = T;
+    fprintf(stderr, "INFO: Control stack guard page reprotected\n");
+}
+
 /* Called from the REPL, too. */
 void reset_control_stack_guard_page(void)
 {
     struct thread *th=arch_os_get_current_thread();
     if (th->control_stack_guard_page_protected == NIL) {
-        memset(CONTROL_STACK_GUARD_PAGE(th), 0, os_vm_page_size);
-        protect_control_stack_guard_page(1, NULL);
-        protect_control_stack_return_guard_page(0, NULL);
-        th->control_stack_guard_page_protected = T;
-        fprintf(stderr, "INFO: Control stack guard page reprotected\n");
+        reset_thread_control_stack_guard_page(th);
     }
 }
 
+void lower_control_stack_guard_page(void)
+{
+    lower_thread_control_stack_guard_page(arch_os_get_current_thread());
+}
+
 boolean
 handle_guard_page_triggered(os_context_t *context,os_vm_address_t addr)
 {
@@ -1515,11 +1533,7 @@ handle_guard_page_triggered(os_context_t *context,os_vm_address_t addr)
          * and restore it. */
         if (th->control_stack_guard_page_protected == NIL)
             lose("control_stack_guard_page_protected NIL");
-        protect_control_stack_guard_page(0, NULL);
-        protect_control_stack_return_guard_page(1, NULL);
-        th->control_stack_guard_page_protected = NIL;
-        fprintf(stderr, "INFO: Control stack guard page unprotected\n");
-
+        lower_control_stack_guard_page();
 #ifdef LISP_FEATURE_C_STACK_IS_CONTROL_STACK
         /* For the unfortunate case, when the control stack is
          * exhausted in a signal handler. */