/* Copyright (C) 1996, 1997 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 <http://www.gnu.org/licenses/>. */ #include <features.h> #include <sys/asm.h> #include <sys/regdef.h> #ifdef __PIC__ .option pic2 #endif .text .align 2 .globl syscall .type syscall,@function .ent syscall syscall: #ifdef __PIC__ SETUP_GP #endif move v0, a0 /* Load system call number from first arg. */ move a0, a1 /* Move the next three args up a register. */ move a1, a2 move a2, a3 /* Load the remaining possible args (up to 7) from the stack. */ #ifdef __mips64 move a3, a4 move a4, a5 move a5, a6 move a6, a7 daddiu sp,sp,-16 sd v0,0*8(sp) ld v0,0*8(sp) /* for system call restarts */ #else lw a3,4*4(sp) lw t0,5*4(sp) lw t1,6*4(sp) lw t2,7*4(sp) addiu sp,sp,-32 sw t0,4*4(sp) sw t1,5*4(sp) sw t2,6*4(sp) sw v0,7*4(sp) lw v0,7*4(sp) /* for system call restarts */ #endif syscall /* Do the system call. */ #ifdef __mips64 daddiu sp,sp,16 #else addiu sp,sp,32 #endif bnez a3, 1f j ra /* Return to caller. */ 1: move a0,v0 /* Pass return val to C function. */ #ifdef __PIC__ SETUP_GP64(v0, syscall) PTR_LA t9, __syscall_error RESTORE_GP64 jr t9 #else j __syscall_error #endif .end syscall .size syscall,.-syscall