Don't scrub the C stack from C.

[sbcl.git] / src / runtime / runtime.h

diff --git a/src/runtime/runtime.h b/src/runtime/runtime.h
index 8602432..b143eda 100644 (file)
--- a/src/runtime/runtime.h
+++ b/src/runtime/runtime.h
@@ -168,7 +168,11 @@ FDEFN(lispobj obj)
 static inline int
 is_lisp_pointer(lispobj obj)
 {
+#if N_WORD_BITS == 64
+    return (obj & 3) == 3;
+#else
     return obj & 1;
+#endif
 }
 
 #include "fixnump.h"
@@ -232,19 +236,8 @@ typedef int boolean;
 static inline boolean
 other_immediate_lowtag_p(lispobj header)
 {
-    switch (lowtag_of(header)) {
-    case OTHER_IMMEDIATE_0_LOWTAG:
-    case OTHER_IMMEDIATE_1_LOWTAG:
-#ifdef OTHER_IMMEDIATE_2_LOWTAG
-    case OTHER_IMMEDIATE_2_LOWTAG:
-#endif
-#ifdef OTHER_IMMEDIATE_3_LOWTAG
-    case OTHER_IMMEDIATE_3_LOWTAG:
-#endif
-        return 1;
-    default:
-        return 0;
-    }
+    /* These lowtags are spaced 4 apart throughout the lowtag space. */
+    return (lowtag_of(header) & 3) == OTHER_IMMEDIATE_0_LOWTAG;
 }
 
 /* KLUDGE: As far as I can tell there's no ANSI C way of saying
@@ -263,13 +256,4 @@ other_immediate_lowtag_p(lispobj header)
 extern void *successful_malloc (size_t size);
 extern char *copied_string (char *string);
 
-#define RUNTIME_OPTIONS_MAGIC 0x31EBF355
-/* 1 for magic, 1 for boolean, 2 for struct runtime_options fields */
-#define RUNTIME_OPTIONS_WORDS (1 + 1 + 2)
-
-struct runtime_options {
-    size_t dynamic_space_size;
-    size_t thread_control_stack_size;
-};
-
 #endif /* _SBCL_RUNTIME_H_ */