80 lines
2.2 KiB
ArmAsm
80 lines
2.2 KiB
ArmAsm
/* Copyright (C) 1991,92,93,94,95,96,97,98 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 Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <sysdep.h>
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#define _ERRNO_H
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#include <bits/errno.h>
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.globl C_SYMBOL_NAME(errno)
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.globl syscall_error
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#undef syscall_error
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#ifdef NO_UNDERSCORES
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__syscall_error:
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#else
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syscall_error:
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#endif
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#if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN
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/* We translate the system's EWOULDBLOCK error into EAGAIN.
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The GNU C library always defines EWOULDBLOCK==EAGAIN.
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EWOULDBLOCK_sys is the original number. */
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cmp r0, $EWOULDBLOCK_sys /* Is it the old EWOULDBLOCK? */
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moveq r0, $EAGAIN /* Yes; translate it to EAGAIN. */
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#endif
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#ifndef PIC
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ldr r1, _errno_loc
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str r0, [r1]
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#ifdef _LIBC_REENTRANT
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stmdb sp!, {r0, lr}
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/* put another copy of r0 at a specific errno location */
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bl C_SYMBOL_NAME(__errno_location)
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ldmia sp!, {r1, lr}
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str r1, [r0]
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#endif
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#else
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stmdb sp!,{r10, lr}
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@ we have to establish our PIC register
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ldr r10, 1f
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add r10, pc, r10
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0: ldr r1, 2f
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ldr r1, [r10, r1]
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@ store a copy in _errno_loc
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str r0, [r1]
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#ifdef _LIBC_REENTRANT
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@ and another copy in thread copy of _errno_loc
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mov r10, r0
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bl __errno_location(PLT)
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str r10, [r0]
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#endif
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ldmia sp!, {r10, lr}
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b 4f
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1: .word _GLOBAL_OFFSET_TABLE_ - 0b - 4
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2: .word C_SYMBOL_NAME(errno)(GOT)
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4:
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#endif
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mvn r0, $0
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RETINSTR(mov, pc, r14)
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#ifndef PIC
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_errno_loc: .long C_SYMBOL_NAME(errno)
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#endif
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#undef __syscall_error
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END (__syscall_error)
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