From 38545a368ca50c8c24e5adae349bcbcae2065132 Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Sat, 12 Nov 2005 01:10:24 +0000 Subject: initial port to hppa --- libc/sysdeps/linux/hppa/syscall.c | 64 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 libc/sysdeps/linux/hppa/syscall.c (limited to 'libc/sysdeps/linux/hppa/syscall.c') diff --git a/libc/sysdeps/linux/hppa/syscall.c b/libc/sysdeps/linux/hppa/syscall.c new file mode 100644 index 000000000..87dff0f34 --- /dev/null +++ b/libc/sysdeps/linux/hppa/syscall.c @@ -0,0 +1,64 @@ +/* Copyright (C) 1997, 1998, 2001, 2003 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include +#include +#include + +/* HPPA implements syscall() in 'C'; the assembler version would + typically be in syscall.S. Also note that we have INLINE_SYSCALL, + INTERNAL_SYSCALL, and all the generated pure assembly syscall wrappers. + How often the function is used is unknown. */ + +long int +syscall (long int __sysno, ...) +{ + /* FIXME: Keep this matching INLINE_SYSCALL for hppa */ + va_list args; + long int arg0, arg1, arg2, arg3, arg4, arg5; + long int __sys_res; + + /* Load varargs */ + va_start (args, __sysno); + arg0 = va_arg (args, long int); + arg1 = va_arg (args, long int); + arg2 = va_arg (args, long int); + arg3 = va_arg (args, long int); + arg4 = va_arg (args, long int); + arg5 = va_arg (args, long int); + va_end (args); + + { + register unsigned long int __res asm("r28"); + K_LOAD_ARGS_6 (arg0, arg1, arg2, arg3, arg4, arg5) + asm volatile (K_STW_ASM_PIC + " ble 0x100(%%sr2, %%r0) \n" + " copy %1, %%r20 \n" + K_LDW_ASM_PIC + : "=r" (__res) + : "r" (__sysno) K_ASM_ARGS_6 + : "memory", K_CALL_CLOB_REGS K_CLOB_ARGS_6); + __sys_res = __res; + } + if ((unsigned long int) __sys_res >= (unsigned long int) -4095) + { + __set_errno (-__sys_res); + __sys_res = -1; + } + return __sys_res; +} -- cgit v1.2.3