2018-12-21 01:48:04 +00:00
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/* Assembly macros for C-SKY.
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2022-01-01 18:54:23 +00:00
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Copyright (C) 2018-2022 Free Software Foundation, Inc.
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2018-12-21 01:48:04 +00:00
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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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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
2019-09-07 05:40:42 +00:00
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<https://www.gnu.org/licenses/>. */
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2018-12-21 01:48:04 +00:00
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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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# undef INTERNAL_SYSCALL_RAW
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2020-01-29 20:38:36 +00:00
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# define INTERNAL_SYSCALL_RAW0(name, dummy...) \
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2018-12-21 01:48:04 +00:00
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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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2020-01-29 20:38:36 +00:00
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# define INTERNAL_SYSCALL_RAW1(name, arg1) \
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2018-12-21 01:48:04 +00:00
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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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2020-01-29 20:38:36 +00:00
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# define INTERNAL_SYSCALL_RAW2(name, arg1, arg2) \
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2018-12-21 01:48:04 +00:00
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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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2020-01-29 20:38:36 +00:00
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# define INTERNAL_SYSCALL_RAW3(name, arg1, arg2, arg3) \
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2018-12-21 01:48:04 +00:00
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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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2020-01-29 20:38:36 +00:00
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# define INTERNAL_SYSCALL_RAW4(name, arg1, arg2, arg3, arg4) \
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2018-12-21 01:48:04 +00:00
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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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2020-01-29 20:38:36 +00:00
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# define INTERNAL_SYSCALL_RAW5(name, arg1, arg2, arg3, arg4, \
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2018-12-21 01:48:04 +00:00
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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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|
2020-01-29 20:38:36 +00:00
|
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|
# define INTERNAL_SYSCALL_RAW6(name, arg1, arg2, arg3, arg4, \
|
2018-12-21 01:48:04 +00:00
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|
|
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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|
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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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|
|
"r" (_a6) \
|
|
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|
|
: "memory"); \
|
|
|
|
|
__sys_result = _a1; \
|
|
|
|
|
} \
|
|
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|
|
(int) __sys_result; })
|
|
|
|
|
|
2020-01-29 20:38:36 +00:00
|
|
|
# define INTERNAL_SYSCALL_RAW7(name, arg1, arg2, arg3, arg4, \
|
2018-12-21 01:48:04 +00:00
|
|
|
arg5, arg6, arg7) \
|
|
|
|
|
({unsigned int __sys_result; \
|
|
|
|
|
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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|
register int _tmp_arg7 = (int)(arg7); \
|
|
|
|
|
{ \
|
|
|
|
|
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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|
register int _a7 __asm__ ("r6"); \
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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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|
|
_a7 = _tmp_arg7; \
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|
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|
|
_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
|
2020-01-29 20:38:36 +00:00
|
|
|
# define INTERNAL_SYSCALL(name, nr, args...) \
|
|
|
|
|
INTERNAL_SYSCALL_RAW##nr(SYS_ify(name), args)
|
2018-12-21 01:48:04 +00:00
|
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|
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|
# undef INTERNAL_SYSCALL_NCS
|
2020-01-29 20:38:36 +00:00
|
|
|
# define INTERNAL_SYSCALL_NCS(number, nr, args...) \
|
|
|
|
|
INTERNAL_SYSCALL_RAW##nr (number, args)
|
2018-12-21 01:48:04 +00:00
|
|
|
|
2020-06-26 19:06:49 +00:00
|
|
|
#undef HAVE_INTERNAL_BRK_ADDR_SYMBOL
|
|
|
|
|
#define HAVE_INTERNAL_BRK_ADDR_SYMBOL 1
|
|
|
|
|
|
2018-12-21 01:48:04 +00:00
|
|
|
#endif /* __ASSEMBLER__ */
|
|
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|
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|
|
#endif /* linux/csky/sysdep.h */
|
