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[Qemu-devel] [PULL 27/43] target/arm: Implement SVE vector splice (predi
From: |
Peter Maydell |
Subject: |
[Qemu-devel] [PULL 27/43] target/arm: Implement SVE vector splice (predicated) |
Date: |
Fri, 15 Jun 2018 15:25:05 +0100 |
From: Richard Henderson <address@hidden>
Reviewed-by: Peter Maydell <address@hidden>
Signed-off-by: Richard Henderson <address@hidden>
Message-id: address@hidden
Signed-off-by: Peter Maydell <address@hidden>
---
target/arm/helper-sve.h | 2 ++
target/arm/sve_helper.c | 37 +++++++++++++++++++++++++++++++++++++
target/arm/translate-sve.c | 13 +++++++++++++
target/arm/sve.decode | 3 +++
4 files changed, 55 insertions(+)
diff --git a/target/arm/helper-sve.h b/target/arm/helper-sve.h
index 3b7c54905dd..c3f8a2b5021 100644
--- a/target/arm/helper-sve.h
+++ b/target/arm/helper-sve.h
@@ -479,6 +479,8 @@ DEF_HELPER_FLAGS_4(sve_rbit_h, TCG_CALL_NO_RWG, void, ptr,
ptr, ptr, i32)
DEF_HELPER_FLAGS_4(sve_rbit_s, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
DEF_HELPER_FLAGS_4(sve_rbit_d, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_5(sve_splice, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32)
+
DEF_HELPER_FLAGS_5(sve_and_pppp, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr,
i32)
DEF_HELPER_FLAGS_5(sve_bic_pppp, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr,
i32)
DEF_HELPER_FLAGS_5(sve_eor_pppp, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr,
i32)
diff --git a/target/arm/sve_helper.c b/target/arm/sve_helper.c
index 4017b9eed14..8da7baad764 100644
--- a/target/arm/sve_helper.c
+++ b/target/arm/sve_helper.c
@@ -2109,3 +2109,40 @@ int32_t HELPER(sve_last_active_element)(void *vg,
uint32_t pred_desc)
return last_active_element(vg, DIV_ROUND_UP(oprsz, 8), esz);
}
+
+void HELPER(sve_splice)(void *vd, void *vn, void *vm, void *vg, uint32_t desc)
+{
+ intptr_t opr_sz = simd_oprsz(desc) / 8;
+ int esz = simd_data(desc);
+ uint64_t pg, first_g, last_g, len, mask = pred_esz_masks[esz];
+ intptr_t i, first_i, last_i;
+ ARMVectorReg tmp;
+
+ first_i = last_i = 0;
+ first_g = last_g = 0;
+
+ /* Find the extent of the active elements within VG. */
+ for (i = QEMU_ALIGN_UP(opr_sz, 8) - 8; i >= 0; i -= 8) {
+ pg = *(uint64_t *)(vg + i) & mask;
+ if (pg) {
+ if (last_g == 0) {
+ last_g = pg;
+ last_i = i;
+ }
+ first_g = pg;
+ first_i = i;
+ }
+ }
+
+ len = 0;
+ if (first_g != 0) {
+ first_i = first_i * 8 + ctz64(first_g);
+ last_i = last_i * 8 + 63 - clz64(last_g);
+ len = last_i - first_i + (1 << esz);
+ if (vd == vm) {
+ vm = memcpy(&tmp, vm, opr_sz * 8);
+ }
+ swap_memmove(vd, vn + first_i, len);
+ }
+ swap_memmove(vd + len, vm, opr_sz * 8 - len);
+}
diff --git a/target/arm/translate-sve.c b/target/arm/translate-sve.c
index f8d8cf1547a..1517d82468b 100644
--- a/target/arm/translate-sve.c
+++ b/target/arm/translate-sve.c
@@ -2681,6 +2681,19 @@ static bool trans_RBIT(DisasContext *s, arg_rpr_esz *a,
uint32_t insn)
return do_zpz_ool(s, a, fns[a->esz]);
}
+static bool trans_SPLICE(DisasContext *s, arg_rprr_esz *a, uint32_t insn)
+{
+ if (sve_access_check(s)) {
+ unsigned vsz = vec_full_reg_size(s);
+ tcg_gen_gvec_4_ool(vec_full_reg_offset(s, a->rd),
+ vec_full_reg_offset(s, a->rn),
+ vec_full_reg_offset(s, a->rm),
+ pred_full_reg_offset(s, a->pg),
+ vsz, vsz, a->esz, gen_helper_sve_splice);
+ }
+ return true;
+}
+
/*
*** SVE Memory - 32-bit Gather and Unsized Contiguous Group
*/
diff --git a/target/arm/sve.decode b/target/arm/sve.decode
index 95eb4968a9f..a9fa6312522 100644
--- a/target/arm/sve.decode
+++ b/target/arm/sve.decode
@@ -463,6 +463,9 @@ REVH 00000101 .. 1001 01 100 ... ..... .....
@rd_pg_rn
REVW 00000101 .. 1001 10 100 ... ..... ..... @rd_pg_rn
RBIT 00000101 .. 1001 11 100 ... ..... ..... @rd_pg_rn
+# SVE vector splice (predicated)
+SPLICE 00000101 .. 101 100 100 ... ..... ..... @rdn_pg_rm
+
### SVE Predicate Logical Operations Group
# SVE predicate logical operations
--
2.17.1
- [Qemu-devel] [PULL 02/43] hw/arm/mps2-tz: Put ethernet controller behind PPC, (continued)
- [Qemu-devel] [PULL 02/43] hw/arm/mps2-tz: Put ethernet controller behind PPC, Peter Maydell, 2018/06/15
- [Qemu-devel] [PULL 26/43] target/arm: Implement SVE reverse within elements, Peter Maydell, 2018/06/15
- [Qemu-devel] [PULL 30/43] target/arm: Implement SVE Integer Compare - Immediate Group, Peter Maydell, 2018/06/15
- [Qemu-devel] [PULL 33/43] target/arm: Implement SVE Integer Compare - Scalars Group, Peter Maydell, 2018/06/15
- [Qemu-devel] [PULL 34/43] target/arm: Implement FDUP/DUP, Peter Maydell, 2018/06/15
- [Qemu-devel] [PULL 31/43] target/arm: Implement SVE Partition Break Group, Peter Maydell, 2018/06/15
- [Qemu-devel] [PULL 28/43] target/arm: Implement SVE Select Vectors Group, Peter Maydell, 2018/06/15
- [Qemu-devel] [PULL 41/43] iommu: Add IOMMU index argument to translate method, Peter Maydell, 2018/06/15
- [Qemu-devel] [PULL 42/43] exec.c: Handle IOMMUs in address_space_translate_for_iotlb(), Peter Maydell, 2018/06/15
- [Qemu-devel] [PULL 22/43] target/arm: Implement SVE Permute - Interleaving Group, Peter Maydell, 2018/06/15
- [Qemu-devel] [PULL 27/43] target/arm: Implement SVE vector splice (predicated),
Peter Maydell <=
- [Qemu-devel] [PULL 35/43] target/arm: Implement SVE Integer Wide Immediate - Unpredicated Group, Peter Maydell, 2018/06/15
- [Qemu-devel] [PULL 29/43] target/arm: Implement SVE Integer Compare - Vectors Group, Peter Maydell, 2018/06/15
- [Qemu-devel] [PULL 37/43] aspeed_scu: Implement RNG register, Peter Maydell, 2018/06/15
- [Qemu-devel] [PULL 38/43] m25p80: add support for two bytes WRSR for Macronix chips, Peter Maydell, 2018/06/15
- [Qemu-devel] [PULL 36/43] target/arm: Implement SVE Floating Point Arithmetic - Unpredicated Group, Peter Maydell, 2018/06/15
- [Qemu-devel] [PULL 39/43] iommu: Add IOMMU index concept to IOMMU API, Peter Maydell, 2018/06/15
- [Qemu-devel] [PULL 32/43] target/arm: Implement SVE Predicate Count Group, Peter Maydell, 2018/06/15
- [Qemu-devel] [PULL 40/43] iommu: Add IOMMU index argument to notifier APIs, Peter Maydell, 2018/06/15
- [Qemu-devel] [PULL 43/43] target/arm: Allow ARMv6-M Thumb2 instructions, Peter Maydell, 2018/06/15
- Re: [Qemu-devel] [PULL 00/43] target-arm queue, Peter Maydell, 2018/06/15