| /* |
| * 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->setMiscRegNoEffect(MISCREG_CCR, tc->readMiscRegNoEffect(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->setMiscRegNoEffect(MISCREG_CCR, tc->readMiscRegNoEffect(MISCREG_CCR) | 0x11); |
| tc->setIntReg(ReturnValueReg, -return_value.value()); |
| } |
| } |
| }; |
| |
| #endif |