experimental acpi support for apic irq routing

sys/include/aml.h

@@ -0,0 +1,36 @@
+#pragma	lib	"libaml.a"
+#pragma	src	"/sys/src/libaml"
+
+/*
+ *	b	uchar*	buffer		amllen() returns number of bytes
+ *	s	char*	string		amllen() is strlen()
+ *	i	uvlong*	integer
+ *	p	void**	package		amllen() is # of elements
+ *	r	void*	region
+ *	f	void*	field
+ *	u	void*	bufferfield
+ *	N	void*	name
+ *	R	void*	reference
+ */
+int		amltag(void *);
+void*		amlval(void *);
+uvlong		amlint(void *);
+int		amllen(void *);
+
+void		amlinit(void);
+void		amlexit(void);
+
+int		amlload(uchar *data, int len);
+void*		amlwalk(void *dot, char *name);
+int		amleval(void *dot, char *fmt, ...);
+void		amlenum(void *dot, char *seg, int (*proc)(void *, void *), void *arg);
+
+void*		amlroot;
+int		amldebug;
+
+#pragma	varargck	type	"V"	void*
+#pragma	varargck	type	"N"	void*
+
+/* to be provided by operating system */
+extern void*	amlalloc(int);
+extern void	amlfree(void*);