From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stafford Horne Date: Fri, 13 Oct 2017 21:36:42 +0900 Subject: [OpenRISC] [PATCH v6 2/6] sim: cgen: add MUL2OFSI and MUL1OFSI functions (needed for OR1K l.mul[u]) In-Reply-To: <20171013123646.8206-1-shorne@gmail.com> References: <20171013123646.8206-1-shorne@gmail.com> Message-ID: <20171013123646.8206-3-shorne@gmail.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: openrisc@lists.librecores.org From: Peter Gavin sim/common/ChangeLog: 2012-03-14 Peter Gavin Stafford Horne * cgen-ops.h (MUL2OFSI): New function, 2's complement overflow flag. (MUL1OFSI): New function, 1's complement overflow flag. --- 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..0fa327630c 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 -- 2.13.6