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[binutils-gdb] sim: cgen: add MUL2OFSI and MUL1OFSI functions (needed for OR1K l.mul[u])
- From: Stafford Horne <shorne at sourceware dot org>
- To: gdb-cvs at sourceware dot org
- Date: 12 Dec 2017 14:58:17 -0000
- Subject: [binutils-gdb] sim: cgen: add MUL2OFSI and MUL1OFSI functions (needed for OR1K l.mul[u])
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=58884b0e451043ed2fb4d2fba18134f0fb451ce5
commit 58884b0e451043ed2fb4d2fba18134f0fb451ce5
Author: Peter Gavin <pgavin@gmail.com>
Date: Sat Dec 9 05:57:25 2017 +0900
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:
---
sim/common/ChangeLog | 7 +++++++
sim/common/cgen-ops.h | 18 ++++++++++++++++++
2 files changed, 25 insertions(+)
diff --git a/sim/common/ChangeLog b/sim/common/ChangeLog
index 091ca42..313a467 100644
--- a/sim/common/ChangeLog
+++ b/sim/common/ChangeLog
@@ -1,4 +1,11 @@
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>
* cgen-accfp.c (remsf, remdf): New function.
diff --git a/sim/common/cgen-ops.h b/sim/common/cgen-ops.h
index 97585d7..0fa3276 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