diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/cris/mmap64.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/cris/mmap64.S | 91 |
1 files changed, 0 insertions, 91 deletions
diff --git a/sysdeps/unix/sysv/linux/cris/mmap64.S b/sysdeps/unix/sysv/linux/cris/mmap64.S deleted file mode 100644 index d71114454b..0000000000 --- a/sysdeps/unix/sysv/linux/cris/mmap64.S +++ /dev/null @@ -1,91 +0,0 @@ -/* Copyright (C) 2001 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#include <sysdep.h> - -#include "kernel-features.h" - -#include <asm/errno.h> - -/* Rather than dragging in yet another kernel file, <asm/page.h>, we - define it here. Provide for easy override. */ -#ifndef PAGE_SHIFT -#define PAGE_SHIFT 13 -#endif - -/* This is: __ptr_t - __mmap64 (__ptr_t addr, size_t len, int prot, int flags, int fd, - off64_t offset); */ - -/* This was done in C, but the resulting code didn't look anywhere near - nice, and mmap64 is important enough to have fast code. Rather than - fixing (the generic bits in) gcc, we make sure not to depend on it by - writing code that GCC cannot reasonably generate. */ - - .syntax no_register_prefix - -ENTRY (__mmap64) - - move [sp],mof - move.d [sp+4],r9 - - /* Only accept an offset being a multiple of PAGE_SIZE, ditto address. */ - btstq (PAGE_SHIFT - 1),r9 - bne 1f - lsrq PAGE_SHIFT,r9 - - btstq (PAGE_SHIFT - 1),r10 - bne 1f - move.d r9,[sp] - - /* We have to store the adjusted part somewhere we can "or" from. - No registers available, so let's re-use the incoming low-part - parameter location. */ - move.d [sp+8],r9 - - swapwbr r9 - /* Check if the highest bits (now the lowest bits) are zero. They - must be, since we're actually calling a system function - specifying the size in *pages* in a single dword. Thus you can - mmap64 PAGE_SIZE * 4 Gbyte. */ - btstq (PAGE_SHIFT - 1),r9 - bne 1f - swapwbr r9 - - lslq (32 - PAGE_SHIFT),r9 - or.d [sp],r9 - move srp,[sp] - move r9,srp - - movu.b SYS_ify (mmap2),r9 - break 13 - - cmps.w -4096,r10 - bhs 0f - move [sp],srp - - Ret - nop - -/* Local error handler. */ -1: - movs.w -EINVAL,r10 - /* Drop through into the ordinary error handler. */ -PSEUDO_END (__mmap64) - -weak_alias (__mmap64, mmap64) |