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/*
* Copyright (c) 2003-2005 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Gabe Black
*/
#ifndef __ARCH_SPARC_SYSCALLRETURN_HH__
#define __ARCH_SPARC_SYSCALLRETURN_HH__
#include <inttypes.h>
#include "sim/syscallreturn.hh"
#include "arch/sparc/regfile.hh"
#include "cpu/thread_context.hh"
namespace SparcISA
{
static inline void setSyscallReturn(SyscallReturn return_value,
ThreadContext * tc)
{
// check for error condition. SPARC syscall convention is to
// indicate success/failure in reg the carry bit of the ccr
// and put the return value itself in the standard return value reg ().
if (return_value.successful()) {
// no error, clear XCC.C
tc->setIntReg(NumIntArchRegs + 2,
tc->readIntReg(NumIntArchRegs + 2) & 0xEE);
//tc->setMiscReg(MISCREG_CCR, tc->readMiscReg(MISCREG_CCR) & 0xEE);
tc->setIntReg(ReturnValueReg, return_value.value());
} else {
// got an error, set XCC.C
tc->setIntReg(NumIntArchRegs + 2,
tc->readIntReg(NumIntArchRegs + 2) | 0x11);
//tc->setMiscReg(MISCREG_CCR, tc->readMiscReg(MISCREG_CCR) | 0x11);
tc->setIntReg(ReturnValueReg, -return_value.value());
}
}
};
#endif
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