syscall.s
来自「一个C源代码分析器」· S 代码 · 共 38 行
S
38 行
/* Copyright (C) 1994 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/ormodify it under the terms of the GNU Library General Public License aspublished by the Free Software Foundation; either version 2 of theLicense, 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 ofMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNULibrary General Public License for more details.You should have received a copy of the GNU Library General PublicLicense along with the GNU C Library; see the file COPYING.LIB. Ifnot, write to the Free Software Foundation, Inc., 675 Mass Ave,Cambridge, MA 02139, USA. */#include <sysdep.h>ENTRY (syscall) .frame sp,0,ra 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 11) from the stack. */ lw t0,16(sp) lw t1,20(sp) lw t2,24(sp) lw t3,28(sp) lw t4,32(sp) lw t5,36(sp) lw t6,40(sp) syscall /* Do the system call. */ j ra /* Return to caller. */ .end syscall
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