diff options
author | Joseph Myers <joseph@codesourcery.com> | 2012-07-01 13:08:59 +0000 |
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committer | Joseph Myers <joseph@codesourcery.com> | 2012-07-01 13:08:59 +0000 |
commit | e84eabb3871c9b39e59323bf3f6b98c2ca9d1cd0 (patch) | |
tree | dff3f1b79454b518d15a7b9bbedeb57ff156bbe8 /ports/sysdeps/unix/sysv/linux/arm/mmap.S | |
parent | 75f0d3040a2c2de8842bfa7a09e11da1a73e17d0 (diff) | |
parent | e64ac02c24b43659048622714afdc92fedf561fa (diff) |
Merge glibc-ports into ports/ directory.glibc-2.16-ports-merge
Diffstat (limited to 'ports/sysdeps/unix/sysv/linux/arm/mmap.S')
-rw-r--r-- | ports/sysdeps/unix/sysv/linux/arm/mmap.S | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/ports/sysdeps/unix/sysv/linux/arm/mmap.S b/ports/sysdeps/unix/sysv/linux/arm/mmap.S new file mode 100644 index 0000000000..3276a3b475 --- /dev/null +++ b/ports/sysdeps/unix/sysv/linux/arm/mmap.S @@ -0,0 +1,63 @@ +/* Copyright (C) 1998-2012 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, see + <http://www.gnu.org/licenses/>. */ + +#include <sysdep.h> + +#define EINVAL 22 + + .text + +ENTRY (__mmap) + /* shuffle args */ + str r5, [sp, #-4]! + cfi_adjust_cfa_offset (4) + cfi_rel_offset (r5, 0) + ldr r5, [sp, #8] + str r4, [sp, #-4]! + cfi_adjust_cfa_offset (4) + cfi_rel_offset (r4, 0) + cfi_remember_state + ldr r4, [sp, #8] + + /* convert offset to pages */ + movs ip, r5, lsl #20 + bne .Linval + mov r5, r5, lsr #12 + + /* do the syscall */ + DO_CALL (mmap2, 0) + + /* restore registers */ +2: + ldr r4, [sp], #4 + cfi_adjust_cfa_offset (-4) + cfi_restore (r4) + ldr r5, [sp], #4 + cfi_adjust_cfa_offset (-4) + cfi_restore (r5) + + cmn r0, $4096 + RETINSTR(cc, lr) + b PLTJMP(syscall_error) + + cfi_restore_state +.Linval: + mov r0, #-EINVAL + b 2b +PSEUDO_END (__mmap) + +weak_alias (__mmap, mmap) |