X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fruntime%2Fvalidate.c;h=54b3a6b6638613533565c9dbb89cd3d8c0d3180b;hb=422b88abf96f4842a3d0999cd3b80d96f5a153d6;hp=9d712dbd707a8f0ccbbe0cf2b635034b5cec007f;hpb=503a50f07740b52908f630b0492cf56556f1a792;p=sbcl.git

diff --git a/src/runtime/validate.c b/src/runtime/validate.c
index 9d712db..54b3a6b 100644
--- a/src/runtime/validate.c
+++ b/src/runtime/validate.c
@@ -74,6 +74,9 @@ validate(void)
 #endif
     ensure_space( (lispobj *)CONTROL_STACK_START  , CONTROL_STACK_SIZE);
     ensure_space( (lispobj *)BINDING_STACK_START  , BINDING_STACK_SIZE);
+#ifdef LISP_FEATURE_C_STACK_IS_CONTROL_STACK
+    ensure_space( (lispobj *) ALTERNATE_SIGNAL_STACK_START, SIGSTKSZ);
+#endif
 
 #ifdef HOLES
     make_holes();
@@ -81,8 +84,16 @@ validate(void)
 #ifndef GENCGC
     current_dynamic_space = DYNAMIC_0_SPACE_START;
 #endif
-
+    
 #ifdef PRINTNOISE
     printf(" done.\n");
 #endif
+    protect_control_stack_guard_page(1);
 }
+
+void protect_control_stack_guard_page(int protect_p) {
+    os_protect(CONTROL_STACK_GUARD_PAGE,
+	       os_vm_page_size,protect_p ?
+	       (OS_VM_PROT_READ|OS_VM_PROT_EXECUTE) : OS_VM_PROT_ALL);
+}
+