#include "runtime.h"
#include "os.h"
#include "globals.h"
+#include "interr.h"
#include "validate.h"
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);
- 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,
+ (unsigned long)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");
}
}
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
#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");
#endif
}
-void protect_control_stack_guard_page(pid_t t_id, int protect_p) {
- struct thread *th = find_thread_by_pid(t_id);
+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);
+ 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(pid_t t_id, int protect_p) {
- struct thread *th = find_thread_by_pid(t_id);
+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);
+ os_vm_page_size,protect_p ?
+ (OS_VM_PROT_READ|OS_VM_PROT_EXECUTE) : OS_VM_PROT_ALL);
}