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glibc/sysdeps/unix/sysv/linux/nios2/sysdep.h
Paul Eggert 5a82c74822 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 02:43:31 -07:00

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/* Assembler macros for Nios II.
Copyright (C) 2000-2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#ifndef _LINUX_NIOS2_SYSDEP_H
#define _LINUX_NIOS2_SYSDEP_H 1
#include <asm/unistd.h>
#include <sysdeps/unix/sysdep.h>
#include <sysdeps/nios2/sysdep.h>
#include <sysdeps/unix/sysv/linux/generic/sysdep.h>
/* For RTLD_PRIVATE_ERRNO. */
#include <dl-sysdep.h>
#include <tls.h>
/* For Linux we can use the system call table in the header file
/usr/include/asm/unistd.h
of the kernel. But these symbols do not follow the SYS_* syntax
so we have to redefine the `SYS_ify' macro here. */
#undef SYS_ify
#define SYS_ify(syscall_name) __NR_##syscall_name
#ifdef __ASSEMBLER__
#define SYSCALL_ERROR_LABEL __local_syscall_error
#undef PSEUDO
#define PSEUDO(name, syscall_name, args) \
ENTRY (name) \
DO_CALL (syscall_name, args) \
bne r7, zero, SYSCALL_ERROR_LABEL; \
#undef PSEUDO_END
#define PSEUDO_END(name) \
SYSCALL_ERROR_HANDLER \
END (name)
#undef PSEUDO_NOERRNO
#define PSEUDO_NOERRNO(name, syscall_name, args) \
ENTRY (name) \
DO_CALL (syscall_name, args)
#undef PSEUDO_END_NOERRNO
#define PSEUDO_END_NOERRNO(name) \
END (name)
#undef ret_NOERRNO
#define ret_NOERRNO ret
#undef DO_CALL
#define DO_CALL(syscall_name, args) \
DOARGS_##args \
movi r2, SYS_ify(syscall_name); \
trap;
#if defined(__PIC__) || defined(PIC)
# if RTLD_PRIVATE_ERRNO
# define SYSCALL_ERROR_HANDLER \
SYSCALL_ERROR_LABEL: \
nextpc r3; \
1: \
movhi r8, %hiadj(rtld_errno - 1b); \
addi r8, r8, %lo(rtld_errno - 1b); \
add r3, r3, r8; \
stw r2, 0(r3); \
movi r2, -1; \
ret;
# else
# if IS_IN (libc)
# define SYSCALL_ERROR_ERRNO __libc_errno
# else
# define SYSCALL_ERROR_ERRNO errno
# endif
# define SYSCALL_ERROR_HANDLER \
SYSCALL_ERROR_LABEL: \
nextpc r3; \
1: \
movhi r8, %hiadj(_gp_got - 1b); \
addi r8, r8, %lo(_gp_got - 1b); \
add r3, r3, r8; \
ldw r3, %tls_ie(SYSCALL_ERROR_ERRNO)(r3); \
add r3, r23, r3; \
stw r2, 0(r3); \
movi r2, -1; \
ret;
# endif
#else
/* We can use a single error handler in the static library. */
#define SYSCALL_ERROR_HANDLER \
SYSCALL_ERROR_LABEL: \
jmpi __syscall_error;
#endif
#define DOARGS_0 /* nothing */
#define DOARGS_1 /* nothing */
#define DOARGS_2 /* nothing */
#define DOARGS_3 /* nothing */
#define DOARGS_4 /* nothing */
#define DOARGS_5 ldw r8, 0(sp);
#define DOARGS_6 ldw r9, 4(sp); ldw r8, 0(sp);
/* The function has to return the error code. */
#undef PSEUDO_ERRVAL
#define PSEUDO_ERRVAL(name, syscall_name, args) \
ENTRY (name) \
DO_CALL (syscall_name, args)
#undef PSEUDO_END_ERRVAL
#define PSEUDO_END_ERRVAL(name) \
END (name)
#define ret_ERRVAL ret
#else /* __ASSEMBLER__ */
/* In order to get __set_errno() definition in INLINE_SYSCALL. */
#include <errno.h>
/* Previously Nios2 used the generic version without the libc_hidden_def
which lead in a non existent __send symbol in libc.so. */
# undef HAVE_INTERNAL_SEND_SYMBOL
/* Define a macro which expands into the inline wrapper code for a system
call. */
#undef INLINE_SYSCALL
#define INLINE_SYSCALL(name, nr, args...) \
({ INTERNAL_SYSCALL_DECL(err); \
unsigned int result_var = INTERNAL_SYSCALL (name, err, nr, args); \
if ( INTERNAL_SYSCALL_ERROR_P (result_var, err) ) \
{ \
__set_errno (INTERNAL_SYSCALL_ERRNO (result_var, err)); \
result_var = -1L; \
} \
(int) result_var; })
#undef INTERNAL_SYSCALL_DECL
#define INTERNAL_SYSCALL_DECL(err) unsigned int err __attribute__((unused))
#undef INTERNAL_SYSCALL_ERROR_P
#define INTERNAL_SYSCALL_ERROR_P(val, err) ((void) (val), (unsigned int) (err))
#undef INTERNAL_SYSCALL_ERRNO
#define INTERNAL_SYSCALL_ERRNO(val, err) ((void) (err), val)
#undef INTERNAL_SYSCALL_RAW
#define INTERNAL_SYSCALL_RAW(name, err, nr, args...) \
({ unsigned int _sys_result; \
{ \
/* Load argument values in temporary variables
to perform side effects like function calls
before the call-used registers are set. */ \
LOAD_ARGS_##nr (args) \
LOAD_REGS_##nr \
register int _r2 asm ("r2") = (int)(name); \
register int _err asm ("r7"); \
asm volatile ("trap" \
: "+r" (_r2), "=r" (_err) \
: ASM_ARGS_##nr \
: __SYSCALL_CLOBBERS); \
_sys_result = _r2; \
err = _err; \
} \
(int) _sys_result; })
#undef INTERNAL_SYSCALL
#define INTERNAL_SYSCALL(name, err, nr, args...) \
INTERNAL_SYSCALL_RAW(SYS_ify(name), err, nr, args)
#undef INTERNAL_SYSCALL_NCS
#define INTERNAL_SYSCALL_NCS(number, err, nr, args...) \
INTERNAL_SYSCALL_RAW(number, err, nr, args)
#define LOAD_ARGS_0()
#define LOAD_REGS_0
#define ASM_ARGS_0
#define LOAD_ARGS_1(a1) \
LOAD_ARGS_0 () \
int __arg1 = (int) (a1);
#define LOAD_REGS_1 \
register int _r4 asm ("r4") = __arg1; \
LOAD_REGS_0
#define ASM_ARGS_1 "r" (_r4)
#define LOAD_ARGS_2(a1, a2) \
LOAD_ARGS_1 (a1) \
int __arg2 = (int) (a2);
#define LOAD_REGS_2 \
register int _r5 asm ("r5") = __arg2; \
LOAD_REGS_1
#define ASM_ARGS_2 ASM_ARGS_1, "r" (_r5)
#define LOAD_ARGS_3(a1, a2, a3) \
LOAD_ARGS_2 (a1, a2) \
int __arg3 = (int) (a3);
#define LOAD_REGS_3 \
register int _r6 asm ("r6") = __arg3; \
LOAD_REGS_2
#define ASM_ARGS_3 ASM_ARGS_2, "r" (_r6)
#define LOAD_ARGS_4(a1, a2, a3, a4) \
LOAD_ARGS_3 (a1, a2, a3) \
int __arg4 = (int) (a4);
#define LOAD_REGS_4 \
register int _r7 asm ("r7") = __arg4; \
LOAD_REGS_3
#define ASM_ARGS_4 ASM_ARGS_3, "r" (_r7)
#define LOAD_ARGS_5(a1, a2, a3, a4, a5) \
LOAD_ARGS_4 (a1, a2, a3, a4) \
int __arg5 = (int) (a5);
#define LOAD_REGS_5 \
register int _r8 asm ("r8") = __arg5; \
LOAD_REGS_4
#define ASM_ARGS_5 ASM_ARGS_4, "r" (_r8)
#define LOAD_ARGS_6(a1, a2, a3, a4, a5, a6) \
LOAD_ARGS_5 (a1, a2, a3, a4, a5) \
int __arg6 = (int) (a6);
#define LOAD_REGS_6 \
register int _r9 asm ("r9") = __arg6; \
LOAD_REGS_5
#define ASM_ARGS_6 ASM_ARGS_5, "r" (_r9)
#define __SYSCALL_CLOBBERS "memory"
#endif /* __ASSEMBLER__ */
/* Pointer mangling support. */
#if IS_IN (rtld)
/* We cannot use the thread descriptor because in ld.so we use setjmp
earlier than the descriptor is initialized. */
#else
# ifdef __ASSEMBLER__
# define PTR_MANGLE_GUARD(guard) ldw guard, POINTER_GUARD(r23)
# define PTR_MANGLE(dst, src, guard) xor dst, src, guard
# define PTR_DEMANGLE(dst, src, guard) PTR_MANGLE (dst, src, guard)
# else
# define PTR_MANGLE(var) \
(var) = (__typeof (var)) ((uintptr_t) (var) ^ THREAD_GET_POINTER_GUARD ())
# define PTR_DEMANGLE(var) PTR_MANGLE (var)
# endif
#endif
#endif /* linux/nios2/sysdep.h */
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