Basic VM and other minor improvements.

Not complete, probably not fully debugged or optimized.

lib/syscall/Makefile.in

@@ -67,6 +67,7 @@ libc_FILES=" \
 	mkdir.s \
 	mkfifo.s \
 	mknod.s \
+	mmap.s \
 	mount.s \
 	open.s \
 	opendir.s \
@@ -119,6 +120,7 @@ libc_FILES=" \
 	uname.s \
 	unlink.s \
 	utime.s \
+	vm_dmacalls.s \
 	wait.s \
 	waitpid.s \
 	write.s"

lib/syscall/mmap.s

@@ -0,0 +1,7 @@
+.sect .text
+.extern	__mmap
+.define	_mmap
+.align 2
+
+_mmap:
+	jmp	__mmap

lib/syscall/vm_dmacalls.s

@@ -0,0 +1,16 @@
+.sect .text
+.extern	__vm_adddma
+.define	_vm_adddma
+.extern	__vm_deldma
+.define	_vm_deldma
+.extern	__vm_getdma
+.define	_vm_getdma
+.align 2
+
+_vm_adddma:
+	jmp	__vm_adddma
+_vm_deldma:
+	jmp	__vm_deldma
+_vm_getdma:
+	jmp	__vm_getdma
+