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51 lines
1.5 KiB
ArmAsm
51 lines
1.5 KiB
ArmAsm
/* Static library error handling code fragment for Nios II.
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Copyright (C) 2015-2016 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 License as
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published by the Free Software Foundation; either version 2.1 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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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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/* The following code is only used in the static library. In the shared
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library, the error handling code is at the end of each function. */
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#ifndef PIC
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/* In the static library, the syscall stubs jump here when they detect
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an error. */
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# undef CALL_MCOUNT
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# define CALL_MCOUNT /* Don't insert the profiling call, it clobbers r2. */
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# if IS_IN (libc)
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# define SYSCALL_ERROR_ERRNO __libc_errno
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# else
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# define SYSCALL_ERROR_ERRNO errno
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# endif
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.text
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ENTRY (__syscall_error)
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nextpc r3
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1:
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movhi r8, %hiadj(_gp_got - 1b)
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addi r8, r8, %lo(_gp_got - 1b)
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add r3, r3, r8
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ldw r3, %tls_ie(SYSCALL_ERROR_ERRNO)(r3)
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add r3, r23, r3
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stw r2, 0(r3)
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movi r2, -1
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ret
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END (__syscall_error)
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#endif
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