* files for more information.
*/
-/*
- * $Header$
- */
-
#include <stdio.h>
+#include <stdlib.h>
+
+#include "sbcl.h"
#include "runtime.h"
#include "os.h"
#include "globals.h"
-#include "sbcl.h"
+#include "interr.h"
#include "validate.h"
+#include "interr.h" /* for declaration of lose */
+
-static void ensure_space(lispobj *start, unsigned long size)
+static void
+ensure_space(lispobj *start, unsigned long 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%08X\n",
- size,
- (unsigned long)start);
- exit(1);
+ 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);
}
}
-#ifdef HOLES
-
-static os_vm_address_t holes[] = HOLES;
-
-static void make_holes(void)
-{
- int i;
+os_vm_address_t undefined_alien_address = 0;
- for (i = 0; i < sizeof(holes)/sizeof(holes[0]); i++) {
- if (os_validate(holes[i], HOLE_SIZE) == NULL) {
- fprintf(stderr,
- "make_holes: failed to validate %ld bytes at 0x%08X\n",
- HOLE_SIZE,
- (unsigned long)holes[i]);
- exit(1);
- }
- os_protect(holes[i], HOLE_SIZE, 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");
}
}
-#endif
-void validate(void)
+void
+validate(void)
{
#ifdef PRINTNOISE
- printf("validating memory ...");
- fflush(stdout);
+ printf("validating memory ...");
+ fflush(stdout);
#endif
- ensure_space(READ_ONLY_SPACE_START, READ_ONLY_SPACE_SIZE);
- ensure_space(STATIC_SPACE_START , STATIC_SPACE_SIZE);
- ensure_space(DYNAMIC_SPACE_START , DYNAMIC_SPACE_SIZE);
- ensure_space(CONTROL_STACK_START , CONTROL_STACK_SIZE);
- ensure_space(BINDING_STACK_START , BINDING_STACK_SIZE);
+ 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);
+#else
+ ensure_space( (lispobj *)DYNAMIC_0_SPACE_START, dynamic_space_size);
+ ensure_space( (lispobj *)DYNAMIC_1_SPACE_START, dynamic_space_size);
+#endif
-#ifdef HOLES
- make_holes();
+#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
- printf(" done.\n");
+ printf(" done.\n");
#endif
}
+
+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_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_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_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)