From: Peter Gavin <pgavin@gmail.com>
Date: Fri, 8 Dec 2017 20:57:25 +0000 (+0900)
Subject: sim: cgen: add MUL2OFSI and MUL1OFSI functions (needed for OR1K l.mul[u])
X-Git-Tag: users/hjl/linux/release/2.29.51.0.1^2~5^2~23
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=58884b0e451043ed2fb4d2fba18134f0fb451ce5;p=thirdparty%2Fbinutils-gdb.git

sim: cgen: add MUL2OFSI and MUL1OFSI functions (needed for OR1K l.mul[u])

sim/common/ChangeLog:

2017-12-12  Peter Gavin  <pgavin@gmail.com>
	    Stafford Horne  <shorne@gmail.com>

	* cgen-ops.h (MUL2OFSI): New function, 2's complement overflow
	flag.
	(MUL1OFSI): New function, 1's complement overflow flag.
---

diff --git a/sim/common/ChangeLog b/sim/common/ChangeLog
index 091ca429298..313a467c36e 100644
--- a/sim/common/ChangeLog
+++ b/sim/common/ChangeLog
@@ -1,3 +1,10 @@
+2017-12-12  Peter Gavin  <pgavin@gmail.com>
+	    Stafford Horne  <shorne@gmail.com>
+
+	* cgen-ops.h (MUL2OFSI): New function, 2's complement overflow
+	flag.
+	(MUL1OFSI): New function, 1's complement overflow flag.
+
 2017-12-12  Peter Gavin  <pgavin@gmail.com>
 	    Stafford Horne <shorne@gmail.com>
 
diff --git a/sim/common/cgen-ops.h b/sim/common/cgen-ops.h
index 97585d7943d..0fa327630c4 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