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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
265 lines
7.9 KiB
C
265 lines
7.9 KiB
C
/* Assembler macros for Nios II.
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Copyright (C) 2000-2019 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_NIOS2_SYSDEP_H
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#define _LINUX_NIOS2_SYSDEP_H 1
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#include <asm/unistd.h>
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#include <sysdeps/unix/sysdep.h>
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#include <sysdeps/nios2/sysdep.h>
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#include <sysdeps/unix/sysv/linux/generic/sysdep.h>
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/* For RTLD_PRIVATE_ERRNO. */
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#include <dl-sysdep.h>
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#include <tls.h>
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/* For Linux we can use the system call table in the header file
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/usr/include/asm/unistd.h
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of the kernel. But these symbols do not follow the SYS_* syntax
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so we have to redefine the `SYS_ify' macro here. */
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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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#define SYSCALL_ERROR_LABEL __local_syscall_error
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#undef PSEUDO
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#define PSEUDO(name, syscall_name, args) \
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ENTRY (name) \
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DO_CALL (syscall_name, args) \
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bne r7, zero, SYSCALL_ERROR_LABEL; \
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#undef PSEUDO_END
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#define PSEUDO_END(name) \
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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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ENTRY (name) \
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DO_CALL (syscall_name, args)
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#undef PSEUDO_END_NOERRNO
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#define PSEUDO_END_NOERRNO(name) \
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END (name)
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#undef ret_NOERRNO
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#define ret_NOERRNO ret
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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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movi r2, SYS_ify(syscall_name); \
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trap;
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#if defined(__PIC__) || defined(PIC)
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# if RTLD_PRIVATE_ERRNO
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# define SYSCALL_ERROR_HANDLER \
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SYSCALL_ERROR_LABEL: \
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nextpc r3; \
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1: \
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movhi r8, %hiadj(rtld_errno - 1b); \
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addi r8, r8, %lo(rtld_errno - 1b); \
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add r3, r3, r8; \
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stw r2, 0(r3); \
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movi r2, -1; \
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ret;
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# else
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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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# define SYSCALL_ERROR_HANDLER \
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SYSCALL_ERROR_LABEL: \
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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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# endif
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#else
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/* We can use a single error handler in the static library. */
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#define SYSCALL_ERROR_HANDLER \
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SYSCALL_ERROR_LABEL: \
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jmpi __syscall_error;
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#endif
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#define DOARGS_0 /* nothing */
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#define DOARGS_1 /* nothing */
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#define DOARGS_2 /* nothing */
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#define DOARGS_3 /* nothing */
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#define DOARGS_4 /* nothing */
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#define DOARGS_5 ldw r8, 0(sp);
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#define DOARGS_6 ldw r9, 4(sp); ldw r8, 0(sp);
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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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ENTRY (name) \
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DO_CALL (syscall_name, args)
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#undef PSEUDO_END_ERRVAL
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#define PSEUDO_END_ERRVAL(name) \
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END (name)
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#define ret_ERRVAL ret
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#else /* __ASSEMBLER__ */
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/* In order to get __set_errno() definition in INLINE_SYSCALL. */
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#include <errno.h>
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/* Previously Nios2 used the generic version without the libc_hidden_def
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which lead in a non existent __send symbol in libc.so. */
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# undef HAVE_INTERNAL_SEND_SYMBOL
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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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({ INTERNAL_SYSCALL_DECL(err); \
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unsigned int result_var = INTERNAL_SYSCALL (name, err, nr, args); \
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if ( INTERNAL_SYSCALL_ERROR_P (result_var, err) ) \
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{ \
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__set_errno (INTERNAL_SYSCALL_ERRNO (result_var, err)); \
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result_var = -1L; \
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} \
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(int) result_var; })
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#undef INTERNAL_SYSCALL_DECL
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#define INTERNAL_SYSCALL_DECL(err) unsigned int err __attribute__((unused))
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#undef INTERNAL_SYSCALL_ERROR_P
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#define INTERNAL_SYSCALL_ERROR_P(val, err) ((void) (val), (unsigned int) (err))
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#undef INTERNAL_SYSCALL_ERRNO
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#define INTERNAL_SYSCALL_ERRNO(val, err) ((void) (err), val)
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#undef INTERNAL_SYSCALL_RAW
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#define INTERNAL_SYSCALL_RAW(name, err, nr, args...) \
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({ unsigned int _sys_result; \
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{ \
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/* Load argument values in temporary variables
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to perform side effects like function calls
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before the call-used registers are set. */ \
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LOAD_ARGS_##nr (args) \
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LOAD_REGS_##nr \
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register int _r2 asm ("r2") = (int)(name); \
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register int _err asm ("r7"); \
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asm volatile ("trap" \
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: "+r" (_r2), "=r" (_err) \
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: ASM_ARGS_##nr \
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: __SYSCALL_CLOBBERS); \
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_sys_result = _r2; \
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err = _err; \
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} \
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(int) _sys_result; })
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#undef INTERNAL_SYSCALL
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#define INTERNAL_SYSCALL(name, err, nr, args...) \
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INTERNAL_SYSCALL_RAW(SYS_ify(name), err, nr, args)
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#undef INTERNAL_SYSCALL_NCS
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#define INTERNAL_SYSCALL_NCS(number, err, nr, args...) \
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INTERNAL_SYSCALL_RAW(number, err, nr, args)
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#define LOAD_ARGS_0()
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#define LOAD_REGS_0
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#define ASM_ARGS_0
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#define LOAD_ARGS_1(a1) \
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LOAD_ARGS_0 () \
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int __arg1 = (int) (a1);
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#define LOAD_REGS_1 \
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register int _r4 asm ("r4") = __arg1; \
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LOAD_REGS_0
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#define ASM_ARGS_1 "r" (_r4)
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#define LOAD_ARGS_2(a1, a2) \
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LOAD_ARGS_1 (a1) \
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int __arg2 = (int) (a2);
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#define LOAD_REGS_2 \
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register int _r5 asm ("r5") = __arg2; \
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LOAD_REGS_1
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#define ASM_ARGS_2 ASM_ARGS_1, "r" (_r5)
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#define LOAD_ARGS_3(a1, a2, a3) \
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LOAD_ARGS_2 (a1, a2) \
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int __arg3 = (int) (a3);
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#define LOAD_REGS_3 \
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register int _r6 asm ("r6") = __arg3; \
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LOAD_REGS_2
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#define ASM_ARGS_3 ASM_ARGS_2, "r" (_r6)
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#define LOAD_ARGS_4(a1, a2, a3, a4) \
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LOAD_ARGS_3 (a1, a2, a3) \
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int __arg4 = (int) (a4);
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#define LOAD_REGS_4 \
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register int _r7 asm ("r7") = __arg4; \
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LOAD_REGS_3
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#define ASM_ARGS_4 ASM_ARGS_3, "r" (_r7)
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#define LOAD_ARGS_5(a1, a2, a3, a4, a5) \
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LOAD_ARGS_4 (a1, a2, a3, a4) \
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int __arg5 = (int) (a5);
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#define LOAD_REGS_5 \
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register int _r8 asm ("r8") = __arg5; \
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LOAD_REGS_4
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#define ASM_ARGS_5 ASM_ARGS_4, "r" (_r8)
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#define LOAD_ARGS_6(a1, a2, a3, a4, a5, a6) \
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LOAD_ARGS_5 (a1, a2, a3, a4, a5) \
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int __arg6 = (int) (a6);
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#define LOAD_REGS_6 \
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register int _r9 asm ("r9") = __arg6; \
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LOAD_REGS_5
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#define ASM_ARGS_6 ASM_ARGS_5, "r" (_r9)
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#define __SYSCALL_CLOBBERS "memory"
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#endif /* __ASSEMBLER__ */
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/* Pointer mangling support. */
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#if IS_IN (rtld)
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/* We cannot use the thread descriptor because in ld.so we use setjmp
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earlier than the descriptor is initialized. */
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#else
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# ifdef __ASSEMBLER__
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# define PTR_MANGLE_GUARD(guard) ldw guard, POINTER_GUARD(r23)
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# define PTR_MANGLE(dst, src, guard) xor dst, src, guard
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# define PTR_DEMANGLE(dst, src, guard) PTR_MANGLE (dst, src, guard)
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# else
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# define PTR_MANGLE(var) \
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(var) = (__typeof (var)) ((uintptr_t) (var) ^ THREAD_GET_POINTER_GUARD ())
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# define PTR_DEMANGLE(var) PTR_MANGLE (var)
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# endif
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#endif
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#endif /* linux/nios2/sysdep.h */
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