syscallreturn.hh

来自「M5,一个功能强大的多处理器系统模拟器.很多针对处理器架构,性能的研究都使用它作」· HH 代码 · 共 62 行

/*
 * Copyright (c) 2007 MIPS Technologies, Inc.  All Rights Reserved
 *
 * This software is part of the M5 simulator.
 *
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 * DERIVATIVE WORKS, AND/OR DISTRIBUTING THIS SOFTWARE YOU ARE AGREEING
 * TO THESE TERMS AND CONDITIONS.
 *
 * Permission is granted to use, copy, create derivative works and
 * distribute this software and such derivative works for any purpose,
 * so long as (1) the copyright notice above, this grant of permission,
 * and the disclaimer below appear in all copies and derivative works
 * made, (2) the copyright notice above is augmented as appropriate to
 * reflect the addition of any new copyrightable work in a derivative
 * work (e.g., Copyright (c) <Publication Year> Copyright Owner), and (3)
 * the name of MIPS Technologies, Inc. ($(B!H(BMIPS$(B!I(B) is not used in any
 * advertising or publicity pertaining to the use or distribution of
 * this software without specific, written prior authorization.
 *
 * THIS SOFTWARE IS PROVIDED $(B!H(BAS IS.$(B!I(B  MIPS MAKES NO WARRANTIES AND
 * DISCLAIMS ALL WARRANTIES, WHETHER EXPRESS, STATUTORY, IMPLIED OR
 * OTHERWISE, INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
 * NON-INFRINGEMENT OF THIRD PARTY RIGHTS, REGARDING THIS SOFTWARE.
 * IN NO EVENT SHALL MIPS BE LIABLE FOR ANY DAMAGES, INCLUDING DIRECT,
 * INDIRECT, INCIDENTAL, CONSEQUENTIAL, SPECIAL, OR PUNITIVE DAMAGES OF
 * ANY KIND OR NATURE, ARISING OUT OF OR IN CONNECTION WITH THIS AGREEMENT,
 * THIS SOFTWARE AND/OR THE USE OF THIS SOFTWARE, WHETHER SUCH LIABILITY
 * IS ASSERTED ON THE BASIS OF CONTRACT, TORT (INCLUDING NEGLIGENCE OR
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 *
 * Authors: Gabe M. Black
 *          Korey L. Sewell
 */

#ifndef __ARCH_MIPS_SYSCALLRETURN_HH__
#define __ARCH_MIPS_SYSCALLRETURN_HH__

#include "sim/syscallreturn.hh"
#include "cpu/thread_context.hh"

namespace MipsISA
{
    static inline void setSyscallReturn(SyscallReturn return_value,
            ThreadContext *tc)
    {
        if (return_value.successful()) {
            // no error
            tc->setIntReg(SyscallSuccessReg, 0);
            tc->setIntReg(ReturnValueReg1, return_value.value());
        } else {
            // got an error, return details
            tc->setIntReg(SyscallSuccessReg, (IntReg) -1);
            tc->setIntReg(ReturnValueReg1, -return_value.value());
        }
    }
}

#endif