mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-23 05:20:06 +00:00
78d1724d53
The libc version is identical and built with same flags. Both aarch64 and nios2 also requires to export __send and tt was done previously with the HAVE_INTERNAL_SEND_SYMBOL (which forced the symbol creation). All __send callers are internal to libc and the original issue that required the symbol export was due a missing libc_hidden_def. So a compat symbol is added for __send and the libc_hidden_def is defined regardless. Checked on x86_64-linux-gnu and i686-linux-gnu.
241 lines
6.9 KiB
C
241 lines
6.9 KiB
C
/* Assembler macros for Nios II.
|
|
Copyright (C) 2000-2021 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 <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__
|
|
|
|
#undef SYSCALL_ERROR_LABEL
|
|
#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>
|
|
|
|
#undef INTERNAL_SYSCALL_RAW
|
|
#define INTERNAL_SYSCALL_RAW(name, 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 = _err != 0 ? -_r2 : _r2; \
|
|
} \
|
|
(int) _sys_result; })
|
|
|
|
#undef INTERNAL_SYSCALL
|
|
#define INTERNAL_SYSCALL(name, nr, args...) \
|
|
INTERNAL_SYSCALL_RAW(SYS_ify(name), nr, args)
|
|
|
|
#undef INTERNAL_SYSCALL_NCS
|
|
#define INTERNAL_SYSCALL_NCS(number, nr, args...) \
|
|
INTERNAL_SYSCALL_RAW(number, 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"
|
|
|
|
#undef HAVE_INTERNAL_BRK_ADDR_SYMBOL
|
|
#define HAVE_INTERNAL_BRK_ADDR_SYMBOL 1
|
|
|
|
#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 */
|