X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fruntime%2Fvalidate.c;h=2b9fc69e8e0b323bbb8abdcfc8560ce12b2e66f0;hb=c8617f57d0413beb2890e94dabe227cef9c5ddad;hp=f9b6ab164d59bc29506ca736521c5bb5a8e47bf2;hpb=8f07013fea8c3a6cae9819f1761340ae4c57e24c;p=sbcl.git

diff --git a/src/runtime/validate.c b/src/runtime/validate.c
index f9b6ab1..2b9fc69 100644
--- a/src/runtime/validate.c
+++ b/src/runtime/validate.c
@@ -20,19 +20,35 @@
 #include "runtime.h"
 #include "os.h"
 #include "globals.h"
+#include "interr.h"
 #include "validate.h"
+#include "interr.h"                     /* for declaration of lose */
+
 
 static void
-ensure_space(lispobj *start, unsigned long size)
+ensure_space(lispobj *start, uword_t size)
 {
     if (os_validate((os_vm_address_t)start,(os_vm_size_t)size)==NULL) {
-	fprintf(stderr,
-		"ensure_space: failed to validate %ld bytes at 0x%08lx\n",
-		size,
-		(unsigned long)start);
-	fprintf(stderr,
-		"(hint: Try \"ulimit -a\"; maybe you should increase memory limits.)\n");
-	exit(1);
+        fprintf(stderr,
+                "ensure_space: failed to validate %ld bytes at 0x%08lx\n",
+                size,
+                (uword_t)start);
+        fprintf(stderr,
+                "(hint: Try \"ulimit -a\"; maybe you should increase memory limits.)\n");
+        exit(1);
+    }
+}
+
+os_vm_address_t undefined_alien_address = 0;
+
+static void
+ensure_undefined_alien(void) {
+    os_vm_address_t start = os_validate(NULL, os_vm_page_size);
+    if (start) {
+        os_protect(start, os_vm_page_size, OS_VM_PROT_NONE);
+        undefined_alien_address = start;
+    } else {
+        lose("could not allocate guard page for undefined alien\n");
     }
 }
 
@@ -43,14 +59,23 @@ validate(void)
     printf("validating memory ...");
     fflush(stdout);
 #endif
-    
+
     ensure_space( (lispobj *)READ_ONLY_SPACE_START, READ_ONLY_SPACE_SIZE);
     ensure_space( (lispobj *)STATIC_SPACE_START   , STATIC_SPACE_SIZE);
 #ifdef LISP_FEATURE_GENCGC
-    ensure_space( (lispobj *)DYNAMIC_SPACE_START  , DYNAMIC_SPACE_SIZE);
+    ensure_space( (lispobj *)DYNAMIC_SPACE_START  , dynamic_space_size);
 #else
-    ensure_space( (lispobj *)DYNAMIC_0_SPACE_START  , DYNAMIC_SPACE_SIZE);
-    ensure_space( (lispobj *)DYNAMIC_1_SPACE_START  , DYNAMIC_SPACE_SIZE);
+    ensure_space( (lispobj *)DYNAMIC_0_SPACE_START, dynamic_space_size);
+    ensure_space( (lispobj *)DYNAMIC_1_SPACE_START, dynamic_space_size);
+#endif
+
+#ifdef LISP_FEATURE_LINKAGE_TABLE
+    ensure_space( (lispobj *)LINKAGE_TABLE_SPACE_START,
+                  LINKAGE_TABLE_SPACE_SIZE);
+#endif
+
+#ifdef LISP_FEATURE_OS_PROVIDES_DLOPEN
+    ensure_undefined_alien();
 #endif
 
 #ifdef PRINTNOISE
@@ -58,10 +83,46 @@ validate(void)
 #endif
 }
 
-void protect_control_stack_guard_page(pid_t t_id, int protect_p) {
-    struct thread *th = find_thread_by_pid(t_id);
-    os_protect(CONTROL_STACK_GUARD_PAGE(th),
-	       os_vm_page_size,protect_p ?
-	       (OS_VM_PROT_READ|OS_VM_PROT_EXECUTE) : OS_VM_PROT_ALL);
+static inline void
+protect_page(void *page, int protect_p, os_vm_prot_t flags) {
+    os_protect(page, os_vm_page_size, protect_p ?
+               flags : OS_VM_PROT_ALL);
 }
 
+#define DEF_PROTECT_PAGE(name,page_name,flags)                          \
+    void                                                                \
+    protect_##name(int protect_p, struct thread *thread) {              \
+        if (!thread)                                                    \
+            thread = arch_os_get_current_thread();                      \
+        protect_page(page_name(thread), protect_p, flags);              \
+    }
+
+DEF_PROTECT_PAGE(control_stack_hard_guard_page,
+                 CONTROL_STACK_HARD_GUARD_PAGE,
+                 OS_VM_PROT_NONE)
+DEF_PROTECT_PAGE(control_stack_guard_page,
+                 CONTROL_STACK_GUARD_PAGE,
+                 OS_VM_PROT_READ|OS_VM_PROT_EXECUTE)
+DEF_PROTECT_PAGE(control_stack_return_guard_page,
+                 CONTROL_STACK_RETURN_GUARD_PAGE,
+                 OS_VM_PROT_READ|OS_VM_PROT_EXECUTE)
+
+DEF_PROTECT_PAGE(binding_stack_hard_guard_page,
+                 BINDING_STACK_HARD_GUARD_PAGE,
+                 OS_VM_PROT_NONE)
+DEF_PROTECT_PAGE(binding_stack_guard_page,
+                 BINDING_STACK_GUARD_PAGE,
+                 OS_VM_PROT_NONE)
+DEF_PROTECT_PAGE(binding_stack_return_guard_page,
+                 BINDING_STACK_RETURN_GUARD_PAGE,
+                 OS_VM_PROT_NONE)
+
+DEF_PROTECT_PAGE(alien_stack_hard_guard_page,
+                 ALIEN_STACK_HARD_GUARD_PAGE,
+                 OS_VM_PROT_NONE)
+DEF_PROTECT_PAGE(alien_stack_guard_page,
+                 ALIEN_STACK_GUARD_PAGE,
+                 OS_VM_PROT_NONE)
+DEF_PROTECT_PAGE(alien_stack_return_guard_page,
+                 ALIEN_STACK_RETURN_GUARD_PAGE,
+                 OS_VM_PROT_NONE)