Initial revision

modules/src/malloc/impl.h

@@ -0,0 +1,73 @@
+/*	This file essentially describes how the mallink info block
+	is implemented.
+*/
+
+#define	MIN_SIZE	(1<<LOG_MIN_SIZE)
+#define	MAX_FLIST	(LOG_MAX_SIZE - LOG_MIN_SIZE)
+#if ALIGNMENT != 1 && ALIGNMENT != 2 && ALIGNMENT != 4 && ALIGNMENT != 8 &&\
+    ALIGNMENT != 16
+ALIGNMENT must be a (small) power of two !!!
+#endif
+#define align(n)	(((n) + (ALIGNMENT - 1)) & ~(ALIGNMENT - 1))
+
+union _inf {
+	union _inf *ptr;
+	unsigned int ui;
+};
+
+typedef union _inf mallink;
+#define	MAL_NULL	((mallink *)0)
+
+/*	Access macros; only these macros know where to find values.
+	They are also lvalues.
+*/
+#ifndef	NON_STANDARD
+#define	OFF_SET	0
+#else	def NON_STANDARD
+#define	OFF_SET	2
+#endif	NON_STANDARD
+
+#define	_log_prev_of(ml)	((ml)[-1+OFF_SET]).ptr
+#define	_log_next_of(ml)	((ml)[-2+OFF_SET]).ptr
+#define	_phys_prev_of(ml)	((ml)[-3+OFF_SET]).ptr
+#define	_this_size_of(ml)	((ml)[-4+OFF_SET]).ui
+#ifndef	CHECK
+#define	N_WORDS			4
+#else	ifdef	CHECK
+#define	_checksum_of(ml)	((ml)[-5+OFF_SET]).ui
+#define	_print_of(ml)		((ml)[-6+OFF_SET]).ui
+#define	_mark_of(ml)		((ml)[-7+OFF_SET]).ui
+#define	N_WORDS			7
+#endif	CHECK
+
+#define	mallink_size()		(unsigned int) \
+	align((N_WORDS - OFF_SET) * sizeof (mallink))
+
+#ifdef	CHECK
+#define	set_mark(ml,e)		(_mark_of(ml) = (e))
+#define	mark_of(ml)		(_mark_of(ml))
+
+#define	set_checksum(ml,e)	(_checksum_of(ml) = (e))
+#define	checksum_of(ml)		(_checksum_of(ml))
+#endif	CHECK
+
+
+#define	block_of_mallink(ml)	((char *)ml)
+#define	mallink_of_block(addr)	((mallink *)addr)
+
+#define	public	extern
+#define	publicdata
+#ifndef	EXTERN
+#define	private	static
+#define	privatedata	static
+#else	def	EXTERN
+#define	private	extern
+#define	privatedata
+#endif	EXTERN
+
+#ifdef	ASSERT
+public m_assert();
+#define	assert(b)		(!(b) ? m_assert(__FILE__, __LINE__) : 0)
+#else	ndef	ASSERT
+#define	assert(b)		0
+#endif	ASSERT