From: Stafford Horne <shorne@gmail.com>
To: openrisc@lists.librecores.org
Subject: [OpenRISC] [PATCH v2 2/6] sim: cgen: add mul-o1flag, mul-o2flag RTL functions to CGEN
Date: Sat, 21 Jan 2017 12:03:51 +0900 [thread overview]
Message-ID: <78efe0aea7b1813831214b1134a7bd080fa7816e.1484967575.git.shorne@gmail.com> (raw)
In-Reply-To: <cover.1484967575.git.shorne@gmail.com>
From: Peter Gavin <pgavin@gmail.com>
* sim/common/ChangeLog
2012-03-14 Peter Gavin <pgavin@gmail.com>
* add mul-o1flag (1's complement unsigned multiply overflow flag)
and mul-o2flag (2's complement signed multiply overflow flag)
* cgen-ops.h:
(MUL1OFSI) new function: 1's complement
(MUL2OFSI) new function: 2's complement
---
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 97585d7..ffbdf3f 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
--
2.9.3
next prev parent reply other threads:[~2017-01-21 3:03 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-21 3:03 [OpenRISC] [PATCH v2 0/6] sim: Port for OpenRISC Stafford Horne
2017-01-21 3:03 ` [OpenRISC] [PATCH v2 1/6] sim: cgen: add rem (remainder) function (needed for OR1K lf.rem.[sd]) Stafford Horne
2017-01-21 3:03 ` Stafford Horne [this message]
2017-01-21 3:03 ` [OpenRISC] [PATCH v2 3/6] sim: cgen: allow suffix on generated arch.[ch] and cpuall.h Stafford Horne
2017-01-21 3:03 ` [OpenRISC] [PATCH v2 4/6] sim: or1k: add or1k target to sim Stafford Horne
2017-02-14 18:52 ` Mike Frysinger
2017-02-15 13:24 ` Stafford Horne
2017-02-15 15:42 ` Mike Frysinger
2017-02-28 11:07 ` Stafford Horne
2017-01-21 3:03 ` [OpenRISC] [PATCH v2 5/6] sim: or1k: Add generated files Stafford Horne
2017-01-21 3:03 ` [OpenRISC] [PATCH v2 6/6] sim: testsuite: add testsuite for or1k sim Stafford Horne
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