diff options
Diffstat (limited to 'nx-X11/programs/Xserver/hw/xfree86/os-support/lynxos/lynx_mmap.c')
-rw-r--r-- | nx-X11/programs/Xserver/hw/xfree86/os-support/lynxos/lynx_mmap.c | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/nx-X11/programs/Xserver/hw/xfree86/os-support/lynxos/lynx_mmap.c b/nx-X11/programs/Xserver/hw/xfree86/os-support/lynxos/lynx_mmap.c new file mode 100644 index 000000000..c00b6700f --- /dev/null +++ b/nx-X11/programs/Xserver/hw/xfree86/os-support/lynxos/lynx_mmap.c @@ -0,0 +1,73 @@ +/* + * Copyright 1993 by Thomas Mueller + * + * Permission to use, copy, modify, distribute, and sell this software and its + * documentation for any purpose is hereby granted without fee, provided that + * the above copyright notice appear in all copies and that both that + * copyright notice and this permission notice appear in supporting + * documentation, and that the name of Thomas Mueller not be used in + * advertising or publicity pertaining to distribution of the software without + * specific, written prior permission. Thomas Mueller makes no representations + * about the suitability of this software for any purpose. It is provided + * "as is" without express or implied warranty. + * + * THOMAS MUELLER DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO + * EVENT SHALL THOMAS MUELLER BE LIABLE FOR ANY SPECIAL, INDIRECT OR + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, + * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER + * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR + * PERFORMANCE OF THIS SOFTWARE. + * + */ + +/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/lynxos/lynx_mmap.c,v 3.5 1998/08/29 05:43:58 dawes Exp $ */ + +#ifdef HAVE_XORG_CONFIG_H +#include <xorg-config.h> +#endif + +#include <X11/X.h> + +#include "xf86.h" +#include "xf86Priv.h" +#include "xf86_OSlib.h" + +/* + * Read BIOS using smem_create facility + */ + +int +xf86ReadBIOS(unsigned long Base, unsigned long Offset, unsigned char *Buf, + int Len) +{ +#if defined(__powerpc__) + xf86Msg(X_WARNING, "xf86ReadBios: no BIOS-probe on PowerPC\n"); + return(-1); +#else + char *p; + int mlen; + + mlen = (Offset + Len + 4095) & ~4095; + p = smem_create("BIOS-probe", (char *)Base, mlen, SM_READ); + if (p == NULL) + { + /* check if there is a stale segment around */ + if (smem_remove("BIOS-probe") == 0) { + xf86Msg(X_INFO, + "xf86ReadBios: removed stale smem_ segment\n"); + p = smem_create("BIOS-probe", (char *)Base, mlen, SM_READ); + } + if (p == NULL) { + xf86Msg(X_WARNING, "xf86ReadBios: Failed to smem_create " + "Base %x len %x %s \n", + Base, mlen, strerror(errno)); + return(-1); + } + } + memcpy(Buf, p + Offset, Len); + smem_create(NULL, p, 0, SM_DETACH); + smem_remove("BIOS-probe"); + return(Len); +#endif +} |