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101 lines
2.4 KiB
ArmAsm
101 lines
2.4 KiB
ArmAsm
/* Copyright (C) 1992-2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Brendan Kehoe (brendan@zen.org).
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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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#define _ERRNO_H
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#include <bits/errno.h>
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#include <sys/asm.h>
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.set nomips16
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#ifdef _LIBC_REENTRANT
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LOCALSZ= 3
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FRAMESZ= (((NARGSAVE+LOCALSZ)*SZREG)+ALSZ)&ALMASK
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RAOFF= FRAMESZ-(1*SZREG)
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GPOFF= FRAMESZ-(2*SZREG)
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V0OFF= FRAMESZ-(3*SZREG)
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ENTRY(__syscall_error)
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#ifdef __PIC__
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.set noat
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SETUP_GPX (AT)
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.set at
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#endif
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PTR_SUBU sp, FRAMESZ
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.set noat
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SETUP_GPX64(GPOFF,AT)
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.set at
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#ifdef __PIC__
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SAVE_GP(GPOFF)
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#endif
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REG_S v0, V0OFF(sp)
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REG_S ra, RAOFF(sp)
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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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bne v0, EWOULDBLOCK_sys, L(skip)
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nop
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li v0, EAGAIN
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L(skip):
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#endif
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/* Find our per-thread errno address */
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jal __errno_location
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/* Store the error value. */
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REG_L t0, V0OFF(sp)
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sw t0, 0(v0)
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/* And just kick back a -1. */
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REG_L ra, RAOFF(sp)
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RESTORE_GP64
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PTR_ADDU sp, FRAMESZ
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li v0, -1
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j ra
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END(__syscall_error)
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#else /* _LIBC_REENTRANT */
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ENTRY(__syscall_error)
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#ifdef __PIC__
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SETUP_GPX (AT)
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#endif
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SETUP_GPX64 (t9, AT)
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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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bne v0, EWOULDBLOCK_sys, L(skip)
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li v0, EAGAIN
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L(skip):
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#endif
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/* Store it in errno... */
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sw v0, errno
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/* And just kick back a -1. */
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li v0, -1
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RESTORE_GP64
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j ra
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END(__syscall_error)
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#endif /* _LIBC_REENTRANT */
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