cc590e1d4e
* sysdeps/unix/sysv/linux/x86_64/sysdep.S [USE_TLS && HAVE___THREAD]: Define errno in .tbss. * sysdeps/unix/x86_64/sysdep.S [USE_TLS && HAVE___THREAD]: Use TLS access for setting errno.
66 lines
1.9 KiB
ArmAsm
66 lines
1.9 KiB
ArmAsm
/* Copyright (C) 2001, 2002 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, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <sysdep.h>
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#include <tls.h>
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/* The Linux version is in fact x86-64/ELF and the start.? file for this
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system (sysdeps/x86_64/elf/start.S) is also used by The Hurd. This file
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must not contain the definition of the `errno' variable, we have to
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define it somewhere else.
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...and this place is here. */
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#if USE_TLS && HAVE___THREAD
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.section .tbss
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#else
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.bss
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#endif
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.globl errno
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.type errno,@object
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.size errno,4
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.globl _errno
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.type _errno,@object
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.size _errno,4
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.align 4
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errno:
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_errno:
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.space 4
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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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The code for Linux is almost identical to the canonical Unix
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code, except that the error number in %rax is negated. */
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#undef CALL_MCOUNT
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#define CALL_MCOUNT /* Don't insert the profiling call, it clobbers %rax. */
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.text
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ENTRY (__syscall_error)
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negq %rax
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#define __syscall_error __syscall_error_1
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#include <sysdeps/unix/x86_64/sysdep.S>
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#endif /* !PIC */
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