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65 lines
1.5 KiB
ArmAsm
65 lines
1.5 KiB
ArmAsm
/* Copyright (C) 1998-2015 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library. If not, see
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<http://www.gnu.org/licenses/>. */
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#include <sysdep.h>
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#define EINVAL 22
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.text
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ENTRY (__mmap)
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/* shuffle args */
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push { r5 }
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cfi_adjust_cfa_offset (4)
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cfi_rel_offset (r5, 0)
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ldr r5, [sp, #8]
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push { r4 }
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cfi_adjust_cfa_offset (4)
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cfi_rel_offset (r4, 0)
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cfi_remember_state
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ldr r4, [sp, #8]
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/* convert offset to pages */
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movs ip, r5, lsl #20
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bne .Linval
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mov r5, r5, lsr #12
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/* do the syscall */
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DO_CALL (mmap2, 0)
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/* restore registers */
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2:
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pop { r4 }
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cfi_adjust_cfa_offset (-4)
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cfi_restore (r4)
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pop { r5 }
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cfi_adjust_cfa_offset (-4)
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cfi_restore (r5)
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cmn r0, $4096
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it cc
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RETINSTR(cc, lr)
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b PLTJMP(syscall_error)
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cfi_restore_state
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.Linval:
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mov r0, #-EINVAL
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b 2b
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PSEUDO_END (__mmap)
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weak_alias (__mmap, mmap)
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