glibc/sysdeps/unix/mips/sysdep.S

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/* Copyright (C) 1992-2022 Free Software Foundation, Inc.
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 published by the Free Software Foundation; either
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,
but WITHOUT ANY WARRANTY; without even the implied warranty of
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
Prefer https to http for gnu.org and fsf.org URLs Also, change sources.redhat.com to sourceware.org. This patch was automatically generated by running the following shell script, which uses GNU sed, and which avoids modifying files imported from upstream: sed -ri ' s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g ' \ $(find $(git ls-files) -prune -type f \ ! -name '*.po' \ ! -name 'ChangeLog*' \ ! -path COPYING ! -path COPYING.LIB \ ! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \ ! -path manual/texinfo.tex ! -path scripts/config.guess \ ! -path scripts/config.sub ! -path scripts/install-sh \ ! -path scripts/mkinstalldirs ! -path scripts/move-if-change \ ! -path INSTALL ! -path locale/programs/charmap-kw.h \ ! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \ ! '(' -name configure \ -execdir test -f configure.ac -o -f configure.in ';' ')' \ ! '(' -name preconfigure \ -execdir test -f preconfigure.ac ';' ')' \ -print) and then by running 'make dist-prepare' to regenerate files built from the altered files, and then executing the following to cleanup: chmod a+x sysdeps/unix/sysv/linux/riscv/configure # Omit irrelevant whitespace and comment-only changes, # perhaps from a slightly-different Autoconf version. git checkout -f \ sysdeps/csky/configure \ sysdeps/hppa/configure \ sysdeps/riscv/configure \ sysdeps/unix/sysv/linux/csky/configure # Omit changes that caused a pre-commit check to fail like this: # remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines git checkout -f \ sysdeps/powerpc/powerpc64/ppc-mcount.S \ sysdeps/unix/sysv/linux/s390/s390-64/syscall.S # Omit change that caused a pre-commit check to fail like this: # remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
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<https://www.gnu.org/licenses/>. */
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#include <sysdep.h>
#include <errno.h>
#include <sys/asm.h>
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.set nomips16
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#ifdef _LIBC_REENTRANT
LOCALSZ= 3
FRAMESZ= (((NARGSAVE+LOCALSZ)*SZREG)+ALSZ)&ALMASK
RAOFF= FRAMESZ-(1*SZREG)
GPOFF= FRAMESZ-(2*SZREG)
V0OFF= FRAMESZ-(3*SZREG)
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ENTRY(__syscall_error)
#ifdef __PIC__
.set noat
SETUP_GPX (AT)
.set at
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#endif
PTR_SUBU sp, FRAMESZ
.set noat
SETUP_GPX64(GPOFF,AT)
.set at
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#ifdef __PIC__
SAVE_GP(GPOFF)
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#endif
REG_S v0, V0OFF(sp)
REG_S ra, RAOFF(sp)
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#if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN
/* We translate the system's EWOULDBLOCK error into EAGAIN.
The GNU C library always defines EWOULDBLOCK==EAGAIN.
EWOULDBLOCK_sys is the original number. */
bne v0, EWOULDBLOCK_sys, L(skip)
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nop
li v0, EAGAIN
L(skip):
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#endif
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/* Find our per-thread errno address */
jal __errno_location
/* Store the error value. */
REG_L t0, V0OFF(sp)
sw t0, 0(v0)
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/* And just kick back a -1. */
REG_L ra, RAOFF(sp)
RESTORE_GP64
PTR_ADDU sp, FRAMESZ
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li v0, -1
j ra
END(__syscall_error)
#else /* _LIBC_REENTRANT */
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ENTRY(__syscall_error)
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#ifdef __PIC__
SETUP_GPX (AT)
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#endif
SETUP_GPX64 (t9, AT)
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#if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN
/* We translate the system's EWOULDBLOCK error into EAGAIN.
The GNU C library always defines EWOULDBLOCK==EAGAIN.
EWOULDBLOCK_sys is the original number. */
bne v0, EWOULDBLOCK_sys, L(skip)
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li v0, EAGAIN
L(skip):
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#endif
/* Store it in errno... */
sw v0, errno
/* And just kick back a -1. */
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li v0, -1
RESTORE_GP64
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j ra
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END(__syscall_error)
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#endif /* _LIBC_REENTRANT */