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-rw-r--r--include/qemu/int128.h16
1 files changed, 16 insertions, 0 deletions
diff --git a/include/qemu/int128.h b/include/qemu/int128.h
index 5c9890db8b..76ea405922 100644
--- a/include/qemu/int128.h
+++ b/include/qemu/int128.h
@@ -63,6 +63,11 @@ static inline Int128 int128_rshift(Int128 a, int n)
return a >> n;
}
+static inline Int128 int128_lshift(Int128 a, int n)
+{
+ return a << n;
+}
+
static inline Int128 int128_add(Int128 a, Int128 b)
{
return a + b;
@@ -217,6 +222,17 @@ static inline Int128 int128_rshift(Int128 a, int n)
}
}
+static inline Int128 int128_lshift(Int128 a, int n)
+{
+ uint64_t l = a.lo << (n & 63);
+ if (n >= 64) {
+ return int128_make128(0, l);
+ } else if (n > 0) {
+ return int128_make128(l, (a.hi << n) | (a.lo >> (64 - n)));
+ }
+ return a;
+}
+
static inline Int128 int128_add(Int128 a, Int128 b)
{
uint64_t lo = a.lo + b.lo;