0301a08c93
not a strong alias. 1998-06-30 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/unix/sysv/linux/m68k/sysdep.S: Make _errno a weak alias, not a strong alias. scratch, which is faster and gets correct behaviour if $(subdirs) is incomplete.
64 lines
2 KiB
ArmAsm
64 lines
2 KiB
ArmAsm
/* Copyright (C) 1996 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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/* Because the Linux version is in fact m68k/ELF and the start.? file
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for this system (sysdeps/m68k/elf/start.S) is also used by The Hurd
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and therefore this files must not contain the definition of the
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`errno' variable (I don't know why, ask Roland), we have to define
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it somewhere else.
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...and this place is here. */
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.bss
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.globl errno
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.type errno,@object
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errno: .space 4
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.size errno,4
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weak_alias (errno, _errno)
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.text
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/* The following code is only used in the shared library when we
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compile the reentrant version. Otherwise each system call defines
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each own version. */
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#ifndef PIC
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/* The syscall stubs jump here when they detect an error. */
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#undef CALL_MCOUNT
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#define CALL_MCOUNT /* Don't insert the profiling call, it clobbers %d0. */
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.text
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ENTRY (__syscall_error)
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neg.l %d0
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#ifndef _LIBC_REENTRANT
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move.l %d0, errno
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#else
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move.l %d0, -(%sp)
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jbsr __errno_location
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move.l (%sp)+, (%a0)
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#endif
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move.l #-1, %d0
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/* Copy return value to %a0 for syscalls that are declared to
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return a pointer. */
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move.l %d0, %a0
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rts
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END (__syscall_error)
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#endif /* PIC */
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