Basic VM and other minor improvements.

Not complete, probably not fully debugged or optimized.

lib/syslib/vm_map_phys.c

@@ -0,0 +1,37 @@
+#define _SYSTEM 1
+#include <lib.h>
+#define vm_map_phys	_vm_map_phys
+#define vm_unmap_phys	_vm_unmap_phys
+#include <sys/mman.h>
+#include <minix/vm.h>
+#include <stdarg.h>
+#include <string.h>
+#include <errno.h>
+
+PUBLIC void *vm_map_phys(endpoint_t who, size_t len, void *phaddr)
+{
+	message m;
+	int r;
+
+	m.VMMP_EP = who;
+	m.VMMP_PHADDR = phaddr;
+	m.VMMP_LEN = len;
+
+	r = _syscall(VM_PROC_NR, VM_MAP_PHYS, &m);
+
+	if(r != OK) return MAP_FAILED;
+
+	return (void *) m.VMMP_VADDR_REPLY;
+}
+
+PUBLIC int vm_unmap_phys(endpoint_t who, void *vaddr, size_t len)
+{
+	message m;
+	int r;
+
+	m.VMUP_EP = who;
+	m.VMUP_VADDR = vaddr;
+
+	return _syscall(VM_PROC_NR, VM_UNMAP_PHYS, &m);
+}
+