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From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: peter.maydell@linaro.org
Subject: [PATCH 01/20] qemu/int128: Add int128_lshift
Date: Fri, 14 Aug 2020 18:31:26 -0700	[thread overview]
Message-ID: <20200815013145.539409-2-richard.henderson@linaro.org> (raw)
In-Reply-To: <20200815013145.539409-1-richard.henderson@linaro.org>

Add left-shift to match the existing right-shift.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 include/qemu/int128.h | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

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;
-- 
2.25.1



  reply	other threads:[~2020-08-15 15:29 UTC|newest]

Thread overview: 49+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-15  1:31 [PATCH 00/20] target/arm: SVE2 preparatory patches Richard Henderson
2020-08-15  1:31 ` Richard Henderson [this message]
2020-08-24 16:40   ` [PATCH 01/20] qemu/int128: Add int128_lshift Peter Maydell
2020-08-15  1:31 ` [PATCH 02/20] target/arm: Split out gen_gvec_fn_zz Richard Henderson
2020-08-24 16:40   ` Peter Maydell
2020-08-15  1:31 ` [PATCH 03/20] target/arm: Split out gen_gvec_fn_zzz, do_zzz_fn Richard Henderson
2020-08-24 16:40   ` Peter Maydell
2020-08-15  1:31 ` [PATCH 04/20] target/arm: Rearrange {sve,fp}_check_access assert Richard Henderson
2020-08-24 16:59   ` Peter Maydell
2020-08-25 13:47     ` Richard Henderson
2020-08-15  1:31 ` [PATCH 05/20] target/arm: Merge do_vector2_p into do_mov_p Richard Henderson
2020-08-24 16:41   ` Peter Maydell
2020-08-15  1:31 ` [PATCH 06/20] target/arm: Clean up 4-operand predicate expansion Richard Henderson
2020-08-25 11:13   ` Peter Maydell
2020-08-15  1:31 ` [PATCH 07/20] target/arm: Use tcg_gen_gvec_bitsel for trans_SEL_pppp Richard Henderson
2020-08-24 16:44   ` Peter Maydell
2020-08-15  1:31 ` [PATCH 08/20] target/arm: Split out gen_gvec_ool_zzzp Richard Henderson
2020-08-24 16:43   ` Peter Maydell
2020-08-15  1:31 ` [PATCH 09/20] target/arm: Merge helper_sve_clr_* and helper_sve_movz_* Richard Henderson
2020-08-25 11:16   ` Peter Maydell
2020-08-15  1:31 ` [PATCH 10/20] target/arm: Split out gen_gvec_ool_zzp Richard Henderson
2020-08-24 16:46   ` Peter Maydell
2020-08-15  1:31 ` [PATCH 11/20] target/arm: Split out gen_gvec_ool_zzz Richard Henderson
2020-08-24 16:47   ` Peter Maydell
2020-08-15  1:31 ` [PATCH 12/20] target/arm: Split out gen_gvec_ool_zz Richard Henderson
2020-08-24 16:47   ` Peter Maydell
2020-08-15  1:31 ` [PATCH 13/20] target/arm: Tidy SVE tszimm shift formats Richard Henderson
2020-08-25 11:18   ` Peter Maydell
2020-08-15  1:31 ` [PATCH 14/20] target/arm: Generalize inl_qrdmlah_* helper functions Richard Henderson
2020-08-25 13:06   ` Peter Maydell
2020-08-15  1:31 ` [PATCH 15/20] target/arm: Fix sve_uzp_p vs odd vector lengths Richard Henderson
2020-08-25 13:43   ` Peter Maydell
2020-08-25 14:02     ` Richard Henderson
2020-08-25 14:09       ` Peter Maydell
2020-08-15  1:31 ` [PATCH 16/20] target/arm: Fix sve_zip_p " Richard Henderson
2020-08-25 13:49   ` Peter Maydell
2020-08-28 19:26     ` Richard Henderson
2020-08-28 23:01       ` Peter Maydell
2020-08-15  1:31 ` [PATCH 17/20] target/arm: Fix sve_punpk_p " Richard Henderson
2020-08-25 13:53   ` Peter Maydell
2020-08-15  1:31 ` [PATCH 18/20] target/arm: Convert integer multiply (indexed) to gvec for aa64 advsimd Richard Henderson
2020-08-25 13:54   ` Peter Maydell
2020-08-15  1:31 ` [PATCH 19/20] target/arm: Convert integer multiply-add " Richard Henderson
2020-08-25 13:55   ` Peter Maydell
2020-08-15  1:31 ` [PATCH 20/20] target/arm: Convert sq{, r}dmulh " Richard Henderson
2020-08-25 13:57   ` Peter Maydell
2020-08-15 17:55 ` [PATCH 00/20] target/arm: SVE2 preparatory patches no-reply
2020-08-27 18:28 ` Peter Maydell
2020-08-27 21:12   ` Richard Henderson

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