#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)
{
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);
- 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;
+os_vm_address_t undefined_alien_address = 0;
static void
-make_holes(void)
-{
- int i;
-
- 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);
+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)
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
- 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);
+
+#ifdef LISP_FEATURE_LINKAGE_TABLE
+ ensure_space( (lispobj *)LINKAGE_TABLE_SPACE_START,
+ LINKAGE_TABLE_SPACE_SIZE);
#endif
-#ifdef HOLES
- make_holes();
+#ifdef LISP_FEATURE_OS_PROVIDES_DLOPEN
+ ensure_undefined_alien();
#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);
+void
+protect_control_stack_guard_page(int protect_p) {
+ struct thread *th = arch_os_get_current_thread();
+ 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);
}
+void
+protect_control_stack_return_guard_page(int protect_p) {
+ struct thread *th = arch_os_get_current_thread();
+ os_protect(CONTROL_STACK_RETURN_GUARD_PAGE(th),
+ os_vm_page_size,protect_p ?
+ (OS_VM_PROT_READ|OS_VM_PROT_EXECUTE) : OS_VM_PROT_ALL);
+}
+
+/* these OOAO violations are here because with mach exception handlers
+ * we need to protect the stack guard pages from the mach exception
+ * handlers which run on a different thread, so we take a thread
+ * argument here. Too bad we don't have keywords args in C. */
+void
+protect_control_stack_guard_page_thread(int protect_p, struct thread *th) {
+ 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);
+}
+
+void
+protect_control_stack_return_guard_page_thread(int protect_p,
+ struct thread* th) {
+ os_protect(CONTROL_STACK_RETURN_GUARD_PAGE(th),
+ os_vm_page_size,protect_p ?
+ (OS_VM_PROT_READ|OS_VM_PROT_EXECUTE) : OS_VM_PROT_ALL);
+}