#ifndef _SBCL_RUNTIME_H_
#define _SBCL_RUNTIME_H_
-#define QSHOW 0 /* Enable low-level debugging output? */
-#if QSHOW
+/*#define QSHOW */ /* Enable low-level debugging output? */
+
+#ifdef QSHOW
#define FSHOW(args) fprintf args
#define SHOW(string) FSHOW((stderr, "/%s\n", string))
#else
* problem.. */
#define QSHOW_SIGNALS 0
-#define N_LOWTAG_BITS 3
-#define LOWTAG_MASK ((1<<N_LOWTAG_BITS)-1)
-#define N_TYPE_BITS 8
-#define TYPE_MASK ((1<<N_TYPE_BITS)-1)
-
-/* FIXME: There seems to be no reason that TypeOf, HeaderValue, CONS,
- * SYMBOL, and FDEFN can't be defined as (possibly inline) functions
- * instead of macros. */
-
-#define TypeOf(obj) ((obj)&TYPE_MASK)
-#define HeaderValue(obj) ((unsigned long) ((obj)>>N_TYPE_BITS))
-
-#define CONS(obj) ((struct cons *)((obj)-LIST_POINTER_LOWTAG))
-#define SYMBOL(obj) ((struct symbol *)((obj)-OTHER_POINTER_LOWTAG))
-#define FDEFN(obj) ((struct fdefn *)((obj)-OTHER_POINTER_LOWTAG))
+#ifdef QSHOW_SIGNALS
+#define FSHOW_SIGNAL FSHOW
+#else
+#define FSHOW_SIGNAL(args)
+#endif
/* KLUDGE: These are in theory machine-dependent and OS-dependent, but
* in practice the "foo int" definitions work for all the machines
* that SBCL runs on as of 0.6.7. If we port to the Alpha or some
* other non-32-bit machine we'll probably need real machine-dependent
* and OS-dependent definitions again. */
-#if ((defined alpha) && !(defined __linux__))
-#error No u32,s32 definitions for this platform. Write some.
-#else
-/* int happens to be 4 bytes on linux/alpha. long is longer. */
+/* even on alpha, int happens to be 4 bytes. long is longer. */
+/* FIXME: these names really shouldn't reflect their length and this
+ is not quite right for some of the FFI stuff */
+typedef unsigned long u64;
+typedef signed long s64;
typedef unsigned int u32;
typedef signed int s32;
-#define LOW_WORD(c) ((long)(c) & 0xFFFFFFFFL)
+
+/* this is an integral type the same length as a machine pointer */
+typedef unsigned long pointer_sized_uint_t ;
+
+#include <sys/types.h>
+
+#if defined(LISP_FEATURE_SB_THREAD)
+#include <pthread.h>
+typedef pthread_t os_thread_t;
+#else
+typedef pid_t os_thread_t;
#endif
-typedef u32 lispobj;
+/* FIXME: we do things this way because of the alpha32 port. once
+ alpha64 has arrived, all this nastiness can go away */
+#if 64 == N_WORD_BITS
+#define LOW_WORD(c) ((pointer_sized_uint_t)c)
+typedef unsigned long lispobj;
+#else
+#define LOW_WORD(c) ((long)(c) & 0xFFFFFFFFL)
+/* fake it on alpha32 */
+typedef unsigned int lispobj;
+#endif
static inline int
-lowtagof(lispobj obj) {
+lowtag_of(lispobj obj) {
return obj & LOWTAG_MASK;
}
+static inline int
+widetag_of(lispobj obj) {
+ return obj & WIDETAG_MASK;
+}
+
+static inline unsigned long
+HeaderValue(lispobj obj)
+{
+ return obj >> N_WIDETAG_BITS;
+}
+
+static inline struct cons *
+CONS(lispobj obj)
+{
+ return (struct cons *)(obj - LIST_POINTER_LOWTAG);
+}
+
+static inline struct symbol *
+SYMBOL(lispobj obj)
+{
+ return (struct symbol *)(obj - OTHER_POINTER_LOWTAG);
+}
+
+static inline struct fdefn *
+FDEFN(lispobj obj)
+{
+ return (struct fdefn *)(obj - OTHER_POINTER_LOWTAG);
+}
+
/* Is the Lisp object obj something with pointer nature (as opposed to
* e.g. a fixnum or character or unbound marker)? */
static inline int
/* Convert from a lispobj with type bits to a native (ordinary
* C/assembly) pointer to the beginning of the object. */
-static inline lispobj
+static inline lispobj *
native_pointer(lispobj obj)
{
- return obj & ~LOWTAG_MASK;
+ return (lispobj *) ((pointer_sized_uint_t) (obj & ~LOWTAG_MASK));
}
+/* inverse operation: create a suitably tagged lispobj from a native
+ * pointer or integer. Needs to be a macro due to the tedious C type
+ * system */
+#define make_lispobj(o,low_tag) ((lispobj)(LOW_WORD(o)|low_tag))
/* FIXME: There seems to be no reason that make_fixnum and fixnum_value
* can't be implemented as (possibly inline) functions. */
-#define make_fixnum(n) ((lispobj)((n)<<2))
-#define fixnum_value(n) (((long)n)>>2)
+#define make_fixnum(n) ((lispobj)((n)<<N_FIXNUM_TAG_BITS))
+#define fixnum_value(n) (((long)n)>>N_FIXNUM_TAG_BITS)
/* Too bad ANSI C doesn't define "bool" as C++ does.. */
typedef int boolean;
-/* FIXME: There seems to be no reason that SymbolValue, SetSymbolValue,
- * and SymbolFunction can't be defined as (possibly inline) functions
- * instead of macros. */
-
-#define SymbolValue(sym) \
- (((struct symbol *)((sym)-OTHER_POINTER_LOWTAG))->value)
-#define SetSymbolValue(sym,val) \
- (((struct symbol *)((sym)-OTHER_POINTER_LOWTAG))->value = (val))
-
/* This only works for static symbols. */
/* FIXME: should be called StaticSymbolFunction, right? */
#define SymbolFunction(sym) \
- (((struct fdefn *)(SymbolValue(sym)-OTHER_POINTER_LOWTAG))->fun)
+ (((struct fdefn *)(native_pointer(SymbolValue(sym,0))))->fun)
/* KLUDGE: As far as I can tell there's no ANSI C way of saying
* "this function never returns". This is the way that you do it
- * in GCC later than version 2.7 or so. If you are using some
+ * in GCC later than version 2.7 or so. If you are using some
* compiler that doesn't understand this, you could could just
* change it to "typedef void never_returns" and nothing would
* break, though you might get a few more bytes of compiled code or