/* Copyright (C) 1991, 1992 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 Library General Public License as published by the Free Software Foundation; either version 2 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with the GNU C Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include <sys/syscall.h> /* Not that using a `PASTE' macro loses. */ #ifdef __STDC__ #ifdef __ELF__ #define SYSCALL_WEAK_ALIAS(alias,orig) \ .weak alias; \ alias=__libc_##orig /* #ifdef _POSIX_THREADS */ #if 1 #ifdef PTHREAD_KERNEL /* Use the regular ELF conventions about underscores, and provide the weak symbol, as required */ #define SYSCALL__(name,args) PSEUDO (__machdep_sys_##name, name, args) \ .weak machdep_sys_##name; \ machdep_sys_##name = __machdep_sys_##name; \ .type __machdep_sys_##name,@function; \ .type machdep_sys_##name,@function; \ .L__machdep_sys_##name##end: .size __machdep_sys_##name,.L__machdep_sys_##name##end - __machdep_sys_##name #define SYSCALL(name,args) PSEUDO (__machdep_sys_##name, name, args) \ .weak machdep_sys_##name; \ machdep_sys_##name = __machdep_sys_##name; \ .type __machdep_sys_##name,@function; \ .type machdep_sys_##name,@function; \ .L__machdep_sys_##name##end: .size __machdep_sys_##name,.L__machdep_sys_##name##end - __machdep_sys_##name #else /* PTHREAD_KERNEL */ /* Use the regular ELF conventions about underscores, and provide the weak symbol, as required */ #define SYSCALL__(name,args) PSEUDO (__libc_##name, name, args) \ .weak __##name; \ .weak name; \ __##name = __libc_##name; \ name = __libc_##name; \ .type __libc_##name,@function; \ .type name,@function; \ .type __##name,@function; \ .L__libc_##name##end: .size __libc_##name,.L__libc_##name##end - __libc_##name #define SYSCALL(name,args) PSEUDO (__libc_##name, name, args) \ .weak name; \ name = __libc_##name; \ .type __libc_##name,@function; \ .type name,@function; \ .L__libc_##name##end: .size __libc_##name,.L__libc_##name##end - __libc_##name #endif /* PTHREAD_KERNEL */ #else /* _POSIX_THREADS */ /* Use the regular ELF conventions about underscores, and provide the weak symbol, as required */ #define SYSCALL__(name,args) PSEUDO (__libc_##name, name, args) \ .weak name; \ __##name = __libc_##name; \ name = __libc_##name; \ .type __libc_##name,@function; \ .type name,@function; \ .type __##name,@function; \ .L__libc_##name##end: .size __libc_##name,.L__libc_##name##end - __libc_##name #define SYSCALL(name,args) PSEUDO (__libc_##name, name, args) \ name = __libc_##name; \ .type __libc_##name,@function; \ .type name,@function; \ .L__libc_##name##end: .size __libc_##name,.L__libc_##name##end - __libc_##name #endif /* _POSIX_THREADS */ #else /* __ELF__ */ #define SYSCALL_WEAK_ALIAS(alias,orig) /* Regular a.out definition */ #define SYSCALL__(name,args) PSEUDO (__##name, name, args) #define SYSCALL(name,args) PSEUDO (name, name, args) #endif /* __ELF__ */ #else /* __STDC__ */ #define SYSCALL__(name,args) PSEUDO (__/**/name, name, args) #define SYSCALL(name,args) PSEUDO (name, name, args) #endif /* __STDC__ */ /* Machine-dependent sysdep.h files are expected to define the macro PSEUDO (function_name, syscall_name) to emit assembly code to define the C-callable function FUNCTION_NAME to do system call SYSCALL_NAME. r0 and r1 are the system call outputs. movl should be defined as an instruction such that "movl r1, r0" works. ret should be defined as the return instruction. */ #if !defined(HAVE_GNU_LD) && !defined (__ELF__) #define ___errno _errno #endif #define HAVE_SYSCALLS