Reviewed-by: Alex Bennée <alex.ben...@linaro.org>
Signed-off-by: Peter Maydell <peter.mayd...@linaro.org>
Signed-off-by: Richard Henderson <richard.hender...@linaro.org>
Message-id: 20250704142112.1018902-106-richard.hender...@linaro.org
Signed-off-by: Peter Maydell <peter.mayd...@linaro.org>
---
target/arm/tcg/helper-sme.h | 6 ++++
target/arm/tcg/sme.decode | 2 ++
target/arm/tcg/sme_helper.c | 51 ++++++++++++++++++++++++++++++++++
target/arm/tcg/translate-sme.c | 5 ++++
4 files changed, 64 insertions(+)
diff --git a/target/arm/tcg/helper-sme.h b/target/arm/tcg/helper-sme.h
index fac70a82b92..1fc756bec6e 100644
--- a/target/arm/tcg/helper-sme.h
+++ b/target/arm/tcg/helper-sme.h
@@ -145,6 +145,8 @@ DEF_HELPER_FLAGS_7(sme_fmopa_d, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, ptr, fpst, i32)
DEF_HELPER_FLAGS_7(sme_bfmopa_w, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, ptr, env, i32)
+DEF_HELPER_FLAGS_7(sme_bfmopa, TCG_CALL_NO_RWG,
+ void, ptr, ptr, ptr, ptr, ptr, fpst, i32)
DEF_HELPER_FLAGS_7(sme_fmops_w_h, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, ptr, env, i32)
@@ -156,6 +158,8 @@ DEF_HELPER_FLAGS_7(sme_fmops_d, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, ptr, fpst, i32)
DEF_HELPER_FLAGS_7(sme_bfmops_w, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, ptr, env, i32)
+DEF_HELPER_FLAGS_7(sme_bfmops, TCG_CALL_NO_RWG,
+ void, ptr, ptr, ptr, ptr, ptr, fpst, i32)
DEF_HELPER_FLAGS_7(sme_ah_fmops_w_h, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, ptr, env, i32)
@@ -167,6 +171,8 @@ DEF_HELPER_FLAGS_7(sme_ah_fmops_d, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, ptr, fpst, i32)
DEF_HELPER_FLAGS_7(sme_ah_bfmops_w, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, ptr, env, i32)
+DEF_HELPER_FLAGS_7(sme_ah_bfmops, TCG_CALL_NO_RWG,
+ void, ptr, ptr, ptr, ptr, ptr, fpst, i32)
DEF_HELPER_FLAGS_6(sme_smopa_s, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, ptr, i32)
diff --git a/target/arm/tcg/sme.decode b/target/arm/tcg/sme.decode
index 3c58fdd2a0e..6bb9aa2a90e 100644
--- a/target/arm/tcg/sme.decode
+++ b/target/arm/tcg/sme.decode
@@ -191,6 +191,8 @@ FMOPA_h 10000001 100 ..... ... ... ..... . 100 .
@op_16
FMOPA_s 10000000 100 ..... ... ... ..... . 00 .. @op_32
FMOPA_d 10000000 110 ..... ... ... ..... . 0 ... @op_64
+BFMOPA 10000001 101 ..... ... ... ..... . 100 . @op_16
+
BFMOPA_w 10000001 100 ..... ... ... ..... . 00 .. @op_32
FMOPA_w_h 10000001 101 ..... ... ... ..... . 00 .. @op_32
diff --git a/target/arm/tcg/sme_helper.c b/target/arm/tcg/sme_helper.c
index d23d9f08d29..bb8ed1ed0e2 100644
--- a/target/arm/tcg/sme_helper.c
+++ b/target/arm/tcg/sme_helper.c
@@ -1144,6 +1144,57 @@ void HELPER(sme_ah_fmops_d)(void *vza, void *vzn, void
*vzm, void *vpn,
float_muladd_negate_product);
}
+static void do_bfmopa(void *vza, void *vzn, void *vzm, uint16_t *pn,
+ uint16_t *pm, float_status *fpst, uint32_t desc,
+ uint16_t negx, int negf)
+{
+ intptr_t row, col, oprsz = simd_maxsz(desc);
+
+ for (row = 0; row < oprsz; ) {
+ uint16_t pa = pn[H2(row >> 4)];
+ do {
+ if (pa & 1) {
+ void *vza_row = vza + tile_vslice_offset(row);
+ uint16_t n = *(uint32_t *)(vzn + H1_2(row)) ^ negx;
+
+ for (col = 0; col < oprsz; ) {
+ uint16_t pb = pm[H2(col >> 4)];
+ do {
+ if (pb & 1) {
+ uint16_t *a = vza_row + H1_2(col);
+ uint16_t *m = vzm + H1_2(col);
+ *a = bfloat16_muladd(n, *m, *a, negf, fpst);
+ }
+ col += 2;
+ pb >>= 2;
+ } while (col & 15);
+ }
+ }
+ row += 2;
+ pa >>= 2;
+ } while (row & 15);
+ }
+}
+
+void HELPER(sme_bfmopa)(void *vza, void *vzn, void *vzm, void *vpn,
+ void *vpm, float_status *fpst, uint32_t desc)
+{
+ do_bfmopa(vza, vzn, vzm, vpn, vpm, fpst, desc, 0, 0);
+}
+
+void HELPER(sme_bfmops)(void *vza, void *vzn, void *vzm, void *vpn,
+ void *vpm, float_status *fpst, uint32_t desc)
+{
+ do_bfmopa(vza, vzn, vzm, vpn, vpm, fpst, desc, 1u << 15, 0);
+}
+
+void HELPER(sme_ah_bfmops)(void *vza, void *vzn, void *vzm, void *vpn,
+ void *vpm, float_status *fpst, uint32_t desc)
+{
+ do_bfmopa(vza, vzn, vzm, vpn, vpm, fpst, desc, 0,
+ float_muladd_negate_product);
+}
+
/*
* Alter PAIR as needed for controlling predicates being false,
* and for NEG on an enabled row element.
diff --git a/target/arm/tcg/translate-sme.c b/target/arm/tcg/translate-sme.c
index 119a5665e67..65fc8bc9b2f 100644
--- a/target/arm/tcg/translate-sme.c
+++ b/target/arm/tcg/translate-sme.c
@@ -582,6 +582,11 @@ TRANS_FEAT(FMOPA_d, aa64_sme_f64f64, do_outprod_fpst, a,
MO_64, FPST_ZA,
: !s->fpcr_ah ? gen_helper_sme_fmops_d
: gen_helper_sme_ah_fmops_d)
+TRANS_FEAT(BFMOPA, aa64_sme_b16b16, do_outprod_fpst, a, MO_16, FPST_ZA,
+ !a->sub ? gen_helper_sme_bfmopa
+ : !s->fpcr_ah ? gen_helper_sme_bfmops
+ : gen_helper_sme_ah_bfmops)
+
TRANS_FEAT(BFMOPA_w, aa64_sme, do_outprod_env, a, MO_32,
!a->sub ? gen_helper_sme_bfmopa_w
: !s->fpcr_ah ? gen_helper_sme_bfmops_w
--
2.43.0
