From 5e0b8d508ed51004bd836384293be00950ee62c9 Mon Sep 17 00:00:00 2001 From: Pasha Date: Tue, 20 Feb 2024 18:49:50 +0000 Subject: init gnumach copy --- i386/i386at/mem.c | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 i386/i386at/mem.c (limited to 'i386/i386at/mem.c') diff --git a/i386/i386at/mem.c b/i386/i386at/mem.c new file mode 100644 index 0000000..f46fc03 --- /dev/null +++ b/i386/i386at/mem.c @@ -0,0 +1,42 @@ +/* + * Mach Operating System + * Copyright (c) 1991,1990,1989 Carnegie Mellon University + * All Rights Reserved. + * + * Permission to use, copy, modify and distribute this software and its + * documentation is hereby granted, provided that both the copyright + * notice and this permission notice appear in all copies of the + * software, derivative works or modified versions, and any portions + * thereof, and that both notices appear in supporting documentation. + * + * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" + * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR + * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. + * + * Carnegie Mellon requests users of this software to return to + * + * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU + * School of Computer Science + * Carnegie Mellon University + * Pittsburgh PA 15213-3890 + * + * any improvements or extensions that they make and grant Carnegie Mellon + * the rights to redistribute these changes. + */ + +#include +#include +#include +#include + +/* This provides access to any memory that is not main RAM */ + +/*ARGSUSED*/ +vm_offset_t +memmmap(dev_t dev, vm_offset_t off, vm_prot_t prot) +{ + if (biosmem_addr_available(off)) + return -1; + + return i386_btop(off); +} -- cgit v1.2.1