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50 lines
1.6 KiB
ArmAsm
50 lines
1.6 KiB
ArmAsm
/* Copyright (C) 2001-2024 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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<https://www.gnu.org/licenses/>. */
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#include <sysdep.h>
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#include <errno.h>
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#include <tls.h>
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#if IS_IN (rtld)
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# include <dl-sysdep.h> /* Defines RTLD_PRIVATE_ERRNO. */
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#endif
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.globl C_SYMBOL_NAME(errno)
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.globl syscall_error
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__syscall_error:
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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 $EWOULDBLOCK_sys, %RAX_LP /* Is it the old EWOULDBLOCK? */
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jne notb /* Branch if not. */
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movl $EAGAIN, %eax /* Yes; translate it to EAGAIN. */
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notb:
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#endif
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#ifdef PIC
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movq C_SYMBOL_NAME(errno@GOTTPOFF)(%rip), %rcx
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movl %eax, %fs:0(%rcx)
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#else
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movl %eax, %fs:C_SYMBOL_NAME(errno@TPOFF)
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#endif
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or $-1, %RAX_LP
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ret
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#undef __syscall_error
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END (__syscall_error)
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