[PATCH v5 2/6] sim: cgen: add MUL2OFSI and MUL1OFSI macros (needed for OR1K l.mul[u])

Stafford Horne
2017-10-05T13:49:49Z

From: Peter Gavin <pgavin@gmail.com>

sim/common/ChangeLog:

2012-03-14 Peter Gavin <pgavin@gmail.com>

* cgen-ops.h (MUL2OFSI): New macro, 1's complement overflow.
(MUL1OFSI): New macro, 2's complement overflow.
---
sim/common/cgen-ops.h | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)

diff --git a/sim/common/cgen-ops.h b/sim/common/cgen-ops.h
index 97585d7943..ffbdf3fd6e 100644
--- a/sim/common/cgen-ops.h
+++ b/sim/common/cgen-ops.h
@@ -631,6 +631,22 @@ SUBOFQI (QI a, QI b, BI c)
return res;
}

+SEMOPS_INLINE BI
+MUL2OFSI (SI a, SI b)
+{
+ DI tmp = MULDI (EXTSIDI(a), EXTSIDI(b));
+ BI res = tmp < -0x80000000LL || tmp > 0x7fffffffLL;
+ return res;
+}
+
+SEMOPS_INLINE BI
+MUL1OFSI (USI a, USI b)
+{
+ UDI tmp = MULDI (ZEXTSIDI(a), ZEXTSIDI(b));
+ BI res = (tmp > 0xFFFFFFFFULL);
+ return res;
+}
+
#else

SI ADDCSI (SI, SI, BI);
@@ -651,6 +667,8 @@ UBI ADDOFQI (QI, QI, BI);
QI SUBCQI (QI, QI, BI);
UBI SUBCFQI (QI, QI, BI);
UBI SUBOFQI (QI, QI, BI);
+BI MUL1OFSI (SI a, SI b);
+BI MUL2OFSI (SI a, SI b);

#endif

--
2.13.5