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-rw-r--r--src/arch/sparc/syscallreturn.hh14
1 files changed, 12 insertions, 2 deletions
diff --git a/src/arch/sparc/syscallreturn.hh b/src/arch/sparc/syscallreturn.hh
index cf13fc3e8..d4e6c7c50 100644
--- a/src/arch/sparc/syscallreturn.hh
+++ b/src/arch/sparc/syscallreturn.hh
@@ -50,13 +50,23 @@ namespace SparcISA
tc->setIntReg(NumIntArchRegs + 2,
tc->readIntReg(NumIntArchRegs + 2) & 0xEE);
//tc->setMiscRegNoEffect(MISCREG_CCR, tc->readMiscRegNoEffect(MISCREG_CCR) & 0xEE);
- tc->setIntReg(ReturnValueReg, return_value.value());
+ IntReg val = return_value.value();
+ if (bits(tc->readMiscRegNoEffect(
+ SparcISA::MISCREG_PSTATE), 3, 3)) {
+ val = bits(val, 31, 0);
+ }
+ tc->setIntReg(ReturnValueReg, val);
} 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());
+ IntReg val = -return_value.value();
+ if (bits(tc->readMiscRegNoEffect(
+ SparcISA::MISCREG_PSTATE), 3, 3)) {
+ val = bits(val, 31, 0);
+ }
+ tc->setIntReg(ReturnValueReg, val);
}
}
};