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[qemu-s390x] [PATCH v1 34/41] s390x/tcg: Implement VECTOR SUBTRACT
From: |
David Hildenbrand |
Subject: |
[qemu-s390x] [PATCH v1 34/41] s390x/tcg: Implement VECTOR SUBTRACT |
Date: |
Thu, 11 Apr 2019 12:08:29 +0200 |
We can use tcg_gen_sub2_i64() to do 128-bit subtraction and otherwise
existing gvec helpers.
Signed-off-by: David Hildenbrand <address@hidden>
---
target/s390x/insn-data.def | 2 ++
target/s390x/translate_vx.inc.c | 17 +++++++++++++++++
2 files changed, 19 insertions(+)
diff --git a/target/s390x/insn-data.def b/target/s390x/insn-data.def
index f3bf9edfca..58a61f41ef 100644
--- a/target/s390x/insn-data.def
+++ b/target/s390x/insn-data.def
@@ -1174,6 +1174,8 @@
F(0xe77c, VSRL, VRR_c, V, 0, 0, 0, 0, vsrl, 0, IF_VEC)
/* VECTOR SHIFT RIGHT LOGICAL BY BYTE */
F(0xe77d, VSRLB, VRR_c, V, 0, 0, 0, 0, vsrl, 0, IF_VEC)
+/* VECTOR SUBTRACT */
+ F(0xe7f7, VS, VRR_c, V, 0, 0, 0, 0, vs, 0, IF_VEC)
#ifndef CONFIG_USER_ONLY
/* COMPARE AND SWAP AND PURGE */
diff --git a/target/s390x/translate_vx.inc.c b/target/s390x/translate_vx.inc.c
index af8ad71084..83463155f6 100644
--- a/target/s390x/translate_vx.inc.c
+++ b/target/s390x/translate_vx.inc.c
@@ -2138,3 +2138,20 @@ static DisasJumpType op_vsrl(DisasContext *s, DisasOps
*o)
tcg_temp_free_i64(shift);
return DISAS_NEXT;
}
+
+static DisasJumpType op_vs(DisasContext *s, DisasOps *o)
+{
+ const uint8_t es = get_field(s->fields, m4);
+
+ if (es > ES_128) {
+ gen_program_exception(s, PGM_SPECIFICATION);
+ return DISAS_NORETURN;
+ } else if (es == ES_128) {
+ gen_gvec128_3_i64(tcg_gen_sub2_i64, get_field(s->fields, v1),
+ get_field(s->fields, v2), get_field(s->fields, v3));
+ return DISAS_NEXT;
+ }
+ gen_gvec_fn_3(sub, es, get_field(s->fields, v1), get_field(s->fields, v2),
+ get_field(s->fields, v3));
+ return DISAS_NEXT;
+}
--
2.20.1
- Re: [qemu-s390x] [Qemu-devel] [PATCH v1 39/41] s390x/tcg: Implement VECTOR SUM ACROSS QUADWORD, (continued)
- [qemu-s390x] [PATCH v1 38/41] s390x/tcg: Implement VECTOR SUM ACROSS DOUBLEWORD, David Hildenbrand, 2019/04/11
- [qemu-s390x] [PATCH v1 37/41] s390x/tcg: Implement VECTOR SUBTRACT WITH BORROW COMPUTE BORROW INDICATION, David Hildenbrand, 2019/04/11
- [qemu-s390x] [PATCH v1 36/41] s390x/tcg: Implement VECTOR SUBTRACT WITH BORROW INDICATION, David Hildenbrand, 2019/04/11
- [qemu-s390x] [PATCH v1 35/41] s390x/tcg: Implement VECTOR SUBTRACT COMPUTE BORROW INDICATION, David Hildenbrand, 2019/04/11
- [qemu-s390x] [PATCH v1 34/41] s390x/tcg: Implement VECTOR SUBTRACT,
David Hildenbrand <=
- [qemu-s390x] [PATCH v1 33/41] s390x/tcg: Implement VECTOR SHIFT RIGHT LOGICAL *, David Hildenbrand, 2019/04/11
- [qemu-s390x] [PATCH v1 32/41] s390x/tcg: Implement VECTOR SHIFT RIGHT ARITHMETIC, David Hildenbrand, 2019/04/11
- [qemu-s390x] [PATCH v1 31/41] s390x/tcg: Implement VECTOR SHIFT LEFT DOUBLE BY BYTE, David Hildenbrand, 2019/04/11
- [qemu-s390x] [PATCH v1 30/41] s390x/tcg: Implement VECTOR SHIFT LEFT (BY BYTE), David Hildenbrand, 2019/04/11