mirror of
https://sourceware.org/git/glibc.git
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5a82c74822
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
535 lines
15 KiB
C
535 lines
15 KiB
C
/* Assembly macros for C-SKY.
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Copyright (C) 2018-2019 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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#ifndef _LINUX_CSKY_SYSDEP_H
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#define _LINUX_CSKY_SYSDEP_H 1
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/* There is some commonality. */
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#include <sysdeps/unix/sysv/linux/generic/sysdep.h>
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#include <sysdeps/unix/sysv/linux/sysdep.h>
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#include <sysdeps/csky/sysdep.h>
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/* Defines RTLD_PRIVATE_ERRNO and USE_DL_SYSINFO. */
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#include <dl-sysdep.h>
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#include <tls.h>
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/* In order to get __set_errno() definition in INLINE_SYSCALL. */
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#ifndef __ASSEMBLER__
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# include <errno.h>
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#endif
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#undef SYS_ify
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#define SYS_ify(syscall_name) (__NR_##syscall_name)
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#ifdef __ASSEMBLER__
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/* Linux uses a negative return value to indicate syscall errors,
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unlike most Unices, which use the condition codes' carry flag.
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Since version 2.1 the return value of a system call might be
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negative even if the call succeeded. E.g., the `lseek' system call
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might return a large offset. Therefore we must not anymore test
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for < 0, but test for a real error by making sure the value in R0
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is a real error number. Linus said he will make sure the no syscall
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returns a value in -1 .. -4095 as a valid result so we can safely
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test with -4095. */
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# undef PSEUDO
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# define PSEUDO(name, syscall_name, args) \
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.text; \
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ENTRY (name); \
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DO_CALL (syscall_name, args);
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# define GETGB \
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grs t0, .Lgetpc; \
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.Lgetpc: \
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lrw gb, .Lgetpc@GOTPC; \
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addu gb, t0;
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# if IS_IN (libc)
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# ifdef __PIC__
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# define PSEUDO_RET \
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btsti a0, 31; \
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bf 1f; \
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subi sp, 8; \
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st.w lr, (sp); \
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st.w gb, (sp, 4); \
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GETGB; \
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lrw a2, SYSCALL_ERROR@PLT; \
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add a2, gb; \
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ld.w a2, (a2); \
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jsr a2; \
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ld.w lr, (sp); \
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ld.w gb, (sp, 4); \
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addi sp, 8; \
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1: \
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rts
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# else
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# define PSEUDO_RET \
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btsti a0, 31; \
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bf 1f; \
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jmpi SYSCALL_ERROR; \
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1: \
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rts
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# endif
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# else
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# ifdef __PIC__
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# define PSEUDO_RET \
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btsti a0, 31; \
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bf 1f; \
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subi sp, 8; \
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st.w lr, (sp); \
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st.w gb, (sp, 4); \
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GETGB; \
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bsr SYSCALL_ERROR; \
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ld.w lr, (sp); \
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ld.w gb, (sp, 4); \
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addi sp, 8; \
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1: \
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rts
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# else
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# define PSEUDO_RET \
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btsti a0, 31; \
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bt SYSCALL_ERROR; \
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rts
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# endif
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# endif
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# undef ret
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# define ret PSEUDO_RET
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# undef PSEUDO_END
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# define PSEUDO_END(name) \
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.align 4; \
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SYSCALL_ERROR_HANDLER; \
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END (name)
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# undef PSEUDO_NOERRNO
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# define PSEUDO_NOERRNO(name, syscall_name, args) \
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.text; \
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ENTRY (name); \
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DO_CALL (syscall_name, args)
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# define PSEUDO_RET_NOERRNO rts
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# undef ret_NOERRNO
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# define ret_NOERRNO PSEUDO_RET_NOERRNO
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# undef PSEUDO_END_NOERRNO
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# define PSEUDO_END_NOERRNO(name) END (name)
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/* The function has to return the error code. */
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# undef PSEUDO_ERRVAL
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# define PSEUDO_ERRVAL(name, syscall_name, args) \
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.text; \
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ENTRY (name) \
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DO_CALL (syscall_name, args); \
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not a0; \
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addi a0, 1
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# undef PSEUDO_END_ERRVAL
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# define PSEUDO_END_ERRVAL(name) END (name)
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# define ret_ERRVAL rts
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# if !IS_IN (libc)
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# define SYSCALL_ERROR __local_syscall_error
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# if RTLD_PRIVATE_ERRNO
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# ifdef __PIC__
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# define SYSCALL_ERROR_HANDLER \
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__local_syscall_error: \
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lrw a1, rtld_errno@PLT; \
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addu a1, gb; \
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ldw a1, (a1); \
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rsubi a0, 0; \
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stw a0, (a1); \
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bmaski a0, 0; \
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rts
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# else /* __PIC__ */
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# define SYSCALL_ERROR_HANDLER \
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__local_syscall_error: \
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lrw a1, rtld_errno; \
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rsubi a0, 0; \
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stw a0, (a1); \
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bmaski a0, 0; \
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rts
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# endif /* __PIC__ */
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# else /* !RTLD_PRIVATE_ERRNO */
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# ifdef __PIC__
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# define SYSCALL_ERROR_HANDLER \
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__local_syscall_error: \
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subi sp, 8; \
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stw a0, (sp, 0); \
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stw r15, (sp, 4); \
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lrw a1, __errno_location@PLT; \
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add a1, gb; \
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ldw a1, (a1); \
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jsr a1; \
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ldw a1, (sp, 0); /* load errno*/ \
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ldw r15, (sp, 4); \
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addi sp, 8; \
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movi a2, 0; \
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rsub a1, a1, a2; \
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stw a1, (a0); \
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bmaski a0, 0; \
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rts
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# else
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# define SYSCALL_ERROR_HANDLER \
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__local_syscall_error: \
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subi sp, 8; \
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stw a0, (sp, 0); \
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stw r15, (sp, 4); \
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lrw a1, __errno_location; \
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jsr a1; \
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ldw a1, (sp, 0); /* load errno */ \
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ldw r15, (sp, 4); \
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addi sp, 8; \
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movi a2, 0; \
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rsub a1, a1, a2; \
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stw a1, (a0); \
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bmaski a0, 0; \
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rts
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# endif /* __PIC__ */
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# endif/* RTLD_PRIVATE_ERROR */
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# else
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# define SYSCALL_ERROR_HANDLER /* Nothing here; code in sysdep.S is used. */
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# define SYSCALL_ERROR __syscall_error
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# endif/* IS_IN (libc) */
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/* define DO_CALL */
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# undef DO_CALL
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# define DO_CALL(syscall_name, args) \
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DOARGS_##args; \
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lrw r7, SYS_ify(syscall_name); \
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trap 0; \
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UNDOARGS_##args
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# undef DOARGS_0
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# define DOARGS_0 \
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subi sp, 8; \
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cfi_adjust_cfa_offset (8); \
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stw r7, (sp, 0); \
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cfi_rel_offset (r7, 0);
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# undef DOARGS_1
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# define DOARGS_1 DOARGS_0
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# undef DOARGS_2
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# define DOARGS_2 DOARGS_0
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# undef DOARGS_3
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# define DOARGS_3 DOARGS_0
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# undef DOARGS_4
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# define DOARGS_4 DOARGS_0
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# undef DOARGS_5
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# define DOARGS_5 \
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subi sp, 8; \
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cfi_adjust_cfa_offset (8); \
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stw r7, (sp, 0); \
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cfi_rel_offset (7, 0); \
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stw r4, (sp, 4); \
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cfi_rel_offset (4, 4); \
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ldw r4, (sp, 8)
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# undef DOARGS_6
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# define DOARGS_6 \
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subi sp, 16; \
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cfi_adjust_cfa_offset (16); \
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stw r7, (sp, 0); \
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cfi_rel_offset (7, 0); \
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stw r4, (sp, 4); \
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cfi_rel_offset (4, 4); \
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stw r5, (sp, 8); \
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cfi_rel_offset (5, 8); \
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ldw r4, (sp, 16); \
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ldw r5, (sp, 20)
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# undef UNDOARGS_0
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# define UNDOARGS_0 \
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ldw r7, (sp, 0); \
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cfi_restore (r7); \
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addi sp, 8; \
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cfi_adjust_cfa_offset (-8);
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# undef UNDOARGS_1
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# define UNDOARGS_1 UNDOARGS_0
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# undef UNDOARGS_2
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# define UNDOARGS_2 UNDOARGS_0
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# undef UNDOARGS_3
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# define UNDOARGS_3 UNDOARGS_0
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# undef UNDOARGS_4
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# define UNDOARGS_4 UNDOARGS_0
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# undef UNDOARGS_5
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# define UNDOARGS_5 \
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ldw r7, (sp, 0); \
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cfi_restore (r4); \
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ldw r4, (sp, 4); \
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cfi_restore (r4); \
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addi sp, 8; \
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cfi_adjust_cfa_offset (-8);
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# undef UNDOARGS_6
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# define UNDOARGS_6 \
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ldw r7, (sp, 0); \
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cfi_restore (r7); \
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ldw r4, (sp, 4); \
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cfi_restore (r4); \
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ldw r5, (sp, 8); \
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cfi_restore (r5); \
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addi sp, 16; \
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cfi_adjust_cfa_offset (-16);
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#else /* not __ASSEMBLER__ */
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/* Define a macro which expands into the inline wrapper code for a system
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call. */
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# undef INLINE_SYSCALL
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# define INLINE_SYSCALL(name, nr, args...) \
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({ unsigned int _sys_result = INTERNAL_SYSCALL (name, , nr, args); \
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if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (_sys_result,), 0)) \
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{ \
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__set_errno (INTERNAL_SYSCALL_ERRNO (_sys_result, )); \
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_sys_result = (unsigned int) -1; \
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} \
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(int) _sys_result; })
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# undef INTERNAL_SYSCALL_DECL
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# define INTERNAL_SYSCALL_DECL(err) do { } while (0)
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# undef INTERNAL_SYSCALL_ERROR_P
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# define INTERNAL_SYSCALL_ERROR_P(val, err) \
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((unsigned int) (val) >= 0xffffff01u)
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# undef INTERNAL_SYSCALL_ERRNO
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# define INTERNAL_SYSCALL_ERRNO(val, err) (-(val))
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# undef INTERNAL_SYSCALL_RAW
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# define INTERNAL_SYSCALL_RAW0(name, err, dummy...) \
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({unsigned int __sys_result; \
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{ \
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register int _a1 __asm__ ("a0"), _nr __asm__ ("r7"); \
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_nr = name; \
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__asm__ __volatile__ ("trap 0 \n\t" \
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: "=r" (_a1) \
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: "r" (_nr) \
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: "memory"); \
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__sys_result = _a1; \
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} \
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(int) __sys_result; })
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# define INTERNAL_SYSCALL_RAW1(name, err, arg1) \
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({unsigned int __sys_result; \
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register int _tmp_arg1 = (int)(arg1); \
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{ \
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register int _a1 __asm__ ("a0"), _nr __asm__ ("r7"); \
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_a1 = _tmp_arg1; \
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_nr = name; \
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__asm__ __volatile__ ("trap 0 \n\t" \
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: "=r" (_a1) \
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: "r" (_nr), "r" (_a1) \
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: "memory"); \
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__sys_result = _a1; \
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} \
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(int) __sys_result; })
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# define INTERNAL_SYSCALL_RAW2(name, err, arg1, arg2) \
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({unsigned int __sys_result; \
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register int _tmp_arg1 = (int)(arg1), _tmp_arg2 = (int)(arg2); \
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{ \
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register int _nr __asm__ ("r7"); \
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register int _a1 __asm__ ("a0"), _a2 __asm__ ("a1"); \
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_a1 = _tmp_arg1, _a2 = _tmp_arg2; \
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_nr = name; \
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__asm__ __volatile__ ("trap 0 \n\t" \
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: "=r" (_a1) \
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: "r" (_nr), "r" (_a1), "r" (_a2) \
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: "memory"); \
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__sys_result = _a1; \
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} \
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(int) __sys_result; })
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# define INTERNAL_SYSCALL_RAW3(name, err, arg1, arg2, arg3) \
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({unsigned int __sys_result; \
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register int _tmp_arg1 = (int)(arg1), _tmp_arg2 = (int)(arg2); \
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register int _tmp_arg3 = (int)(arg3); \
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{ \
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register int _nr __asm__ ("r7"); \
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register int _a1 __asm__ ("a0"), _a2 __asm__ ("a1"); \
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register int _a3 __asm__ ("a2"); \
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_a1 = _tmp_arg1; \
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_a2 = _tmp_arg2; \
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_a3 = _tmp_arg3; \
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_nr = name; \
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__asm__ __volatile__ ("trap 0 \n\t" \
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: "=r" (_a1) \
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: "r" (_nr), "r" (_a1), "r" (_a2), \
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"r" (_a3) \
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: "memory"); \
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__sys_result = _a1; \
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} \
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(int) __sys_result; })
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# define INTERNAL_SYSCALL_RAW4(name, err, arg1, arg2, arg3, arg4) \
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({unsigned int __sys_result; \
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register int _tmp_arg1 = (int)(arg1), _tmp_arg2 = (int)(arg2); \
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register int _tmp_arg3 = (int)(arg3), _tmp_arg4 = (int)(arg4); \
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{ \
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register int _nr __asm__ ("r7"); \
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register int _a1 __asm__ ("a0"), _a2 __asm__ ("a1"); \
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register int _a3 __asm__ ("a2"), _a4 __asm__ ("a3"); \
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_a1 = _tmp_arg1, _a2 = _tmp_arg2, _a3 = _tmp_arg3; \
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_a4 = _tmp_arg4; \
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|
_nr = name; \
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|
__asm__ __volatile__ ("trap 0 \n\t" \
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|
: "=r" (_a1) \
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: "r" (_nr), "r" (_a1), "r" (_a2), \
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"r" (_a3), "r" (_a4) \
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|
: "memory"); \
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__sys_result = _a1; \
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|
} \
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|
(int) __sys_result; })
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|
# define INTERNAL_SYSCALL_RAW5(name, err, arg1, arg2, arg3, arg4, \
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|
arg5) \
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|
({unsigned int __sys_result; \
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|
register int _tmp_arg1 = (int)(arg1), _tmp_arg2 = (int)(arg2); \
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|
register int _tmp_arg3 = (int)(arg3), _tmp_arg4 = (int)(arg4); \
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|
register int _tmp_arg5 = (int)(arg5); \
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|
{ \
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|
register int _nr __asm__ ("r7"); \
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|
register int _a1 __asm__ ("a0"), _a2 __asm__ ("a1"); \
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|
register int _a3 __asm__ ("a2"), _a4 __asm__ ("a3"); \
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|
register int _a5 __asm__ ("r4"); \
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|
_a1 = _tmp_arg1, _a2 = _tmp_arg2, _a3 = _tmp_arg3; \
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|
_a4 = _tmp_arg4, _a5 = _tmp_arg5; \
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|
_nr = name; \
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|
__asm__ __volatile__ ("trap 0 \n\t" \
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|
: "=r" (_a1) \
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|
: "r" (_nr), "r" (_a1), "r" (_a2), \
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|
"r" (_a3), "r" (_a4), "r" (_a5) \
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|
: "memory"); \
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|
__sys_result = _a1; \
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|
} \
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|
(int) __sys_result; })
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# define INTERNAL_SYSCALL_RAW6(name, err, arg1, arg2, arg3, arg4, \
|
|
arg5, arg6) \
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|
({unsigned int __sys_result; \
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|
register int _tmp_arg1 = (int)(arg1), _tmp_arg2 = (int)(arg2); \
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|
register int _tmp_arg3 = (int)(arg3), _tmp_arg4 = (int)(arg4); \
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|
register int _tmp_arg5 = (int)(arg5), _tmp_arg6 = (int)(arg6); \
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|
{ \
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|
register int _nr __asm__ ("r7"); \
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|
register int _a1 __asm__ ("a0"), _a2 __asm__ ("a1"); \
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|
register int _a3 __asm__ ("a2"), _a4 __asm__ ("a3"); \
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|
register int _a5 __asm__ ("r4"), _a6 __asm__ ("r5"); \
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|
_a1 = _tmp_arg1, _a2 = _tmp_arg2, _a3 = _tmp_arg3; \
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|
_a4 = _tmp_arg4, _a5 = _tmp_arg5, _a6 = _tmp_arg6; \
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|
_nr = name; \
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|
__asm__ __volatile__ ("trap 0 \n\t" \
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|
: "=r" (_a1) \
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|
: "r" (_nr), "r" (_a1), "r" (_a2), \
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|
"r" (_a3), "r" (_a4), "r" (_a5), \
|
|
"r" (_a6) \
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|
: "memory"); \
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|
__sys_result = _a1; \
|
|
} \
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|
(int) __sys_result; })
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|
|
|
# define INTERNAL_SYSCALL_RAW7(name, err, arg1, arg2, arg3, arg4, \
|
|
arg5, arg6, arg7) \
|
|
({unsigned int __sys_result; \
|
|
register int _tmp_arg1 = (int)(arg1), _tmp_arg2 = (int)(arg2); \
|
|
register int _tmp_arg3 = (int)(arg3), _tmp_arg4 = (int)(arg4); \
|
|
register int _tmp_arg5 = (int)(arg5), _tmp_arg6 = (int)(arg6); \
|
|
register int _tmp_arg7 = (int)(arg7); \
|
|
{ \
|
|
register int _nr __asm__ ("r7"); \
|
|
register int _a1 __asm__ ("a0"), _a2 __asm__ ("a1"); \
|
|
register int _a3 __asm__ ("a2"), _a4 __asm__ ("a3"); \
|
|
register int _a5 __asm__ ("r4"), _a6 __asm__ ("r5"); \
|
|
register int _a7 __asm__ ("r6"); \
|
|
_a1 = _tmp_arg1, _a2 = _tmp_arg2, _a3 = _tmp_arg3; \
|
|
_a4 = _tmp_arg4, _a5 = _tmp_arg5, _a6 = _tmp_arg6; \
|
|
_a7 = _tmp_arg7; \
|
|
_nr = name; \
|
|
__asm__ __volatile__ ("trap 0 \n\t" \
|
|
: "=r" (_a1) \
|
|
: "r" (_nr), "r" (_a1), "r" (_a2), \
|
|
"r" (_a3), "r" (_a4), "r" (_a5), \
|
|
"r" (_a6), "r" (_a7) \
|
|
: "memory"); \
|
|
__sys_result = _a1; \
|
|
} \
|
|
(int) __sys_result; })
|
|
|
|
# undef INTERNAL_SYSCALL
|
|
# define INTERNAL_SYSCALL(name, err, nr, args...) \
|
|
INTERNAL_SYSCALL_RAW##nr(SYS_ify(name), err, args)
|
|
|
|
# undef INTERNAL_SYSCALL_NCS
|
|
# define INTERNAL_SYSCALL_NCS(number, err, nr, args...) \
|
|
INTERNAL_SYSCALL_RAW##nr (number, err, args)
|
|
|
|
#endif /* __ASSEMBLER__ */
|
|
|
|
/* Pointer mangling support. */
|
|
#if (IS_IN (rtld) \
|
|
|| (!defined SHARED && (IS_IN (libc) || IS_IN (libpthread))))
|
|
# ifdef __ASSEMBLER__
|
|
# define PTR_MANGLE(dst, src, guard) \
|
|
grs t0, 1f; \
|
|
1: \
|
|
lrw guard, 1b@GOTPC; \
|
|
addu t0, guard; \
|
|
lrw guard, __pointer_chk_guard_local@GOT; \
|
|
ldr.w guard, (t0, guard << 0); \
|
|
ldw guard, (guard, 0); \
|
|
xor dst, src, guard;
|
|
# define PTR_DEMANGLE(dst, src, guard) PTR_MANGLE (dst, src, guard)
|
|
# define PTR_MANGLE2(dst, src, guard) \
|
|
xor dst, src, guard
|
|
# define PTR_DEMANGLE2(dst, src, guard) PTR_MANGLE2 (dst, src, guard)
|
|
# else
|
|
extern uintptr_t __pointer_chk_guard_local;
|
|
# define PTR_MANGLE(var) \
|
|
(var) = (__typeof (var)) ((uintptr_t) (var) ^ __pointer_chk_guard_local)
|
|
# define PTR_DEMANGLE(var) PTR_MANGLE (var)
|
|
# endif
|
|
#else
|
|
# ifdef __ASSEMBLER__
|
|
# define PTR_MANGLE(dst, src, guard) \
|
|
grs t0, 1f; \
|
|
1: \
|
|
lrw guard, 1b@GOTPC; \
|
|
addu t0, guard; \
|
|
lrw guard, __pointer_chk_guard@GOT; \
|
|
ldr.w guard, (t0, guard << 0); \
|
|
ldw guard, (guard, 0); \
|
|
xor dst, src, guard;
|
|
# define PTR_DEMANGLE(dst, src, guard) PTR_MANGLE (dst, src, guard)
|
|
# define PTR_MANGLE2(dst, src, guard) \
|
|
xor dst, src, guard
|
|
# define PTR_DEMANGLE2(dst, src, guard) PTR_MANGLE2 (dst, src, guard)
|
|
# else
|
|
extern uintptr_t __pointer_chk_guard;
|
|
# define PTR_MANGLE(var) \
|
|
(var) = (__typeof (var)) ((uintptr_t) (var) ^ __pointer_chk_guard)
|
|
# define PTR_DEMANGLE(var) PTR_MANGLE (var)
|
|
# endif
|
|
#endif
|
|
|
|
#endif /* linux/csky/sysdep.h */
|