Commit 13146f8ecb for qemu.org
commit 13146f8ecbc36f1c4ba8d0a58dde747dc75f0f14
Author: Richard Henderson <richard.henderson@linaro.org>
Date: Wed Aug 26 10:42:00 2026 -0700
target/arm: Implement SME BFMUL
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20260826174213.614571-14-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
diff --git a/target/arm/tcg/sme.decode b/target/arm/tcg/sme.decode
index 4e19c42b19..3e4cb7e582 100644
--- a/target/arm/tcg/sme.decode
+++ b/target/arm/tcg/sme.decode
@@ -296,10 +296,18 @@ SQDMULH_n1 1100000 1 .. 10 .... 1010.1 00000 .... 0 @z2z_4x1
FSCALE_n1 1100000 1 .. 10 .... 1010.0 01100 .... 0 @z2z_4x1
}
-FMUL_n1 1100000 1 esz:2 1 zm:4 0 111010 ....0 ....0 \
+{
+ BFMUL_n1 1100000 1 00 1 zm:4 0 111010 ....0 ....0 \
+ &zzz_en n=2 zd=%zd_ax2 zn=%zn_ax2 esz=0
+ FMUL_n1 1100000 1 esz:2 1 zm:4 0 111010 ....0 ....0 \
&zzz_en n=2 zd=%zd_ax2 zn=%zn_ax2
-FMUL_n1 1100000 1 esz:2 1 zm:4 1 111010 ...00 ...00 \
+}
+{
+ BFMUL_n1 1100000 1 00 1 zm:4 1 111010 ...00 ...00 \
+ &zzz_en n=4 zd=%zd_ax4 zn=%zn_ax4 esz=0
+ FMUL_n1 1100000 1 esz:2 1 zm:4 1 111010 ...00 ...00 \
&zzz_en n=4 zd=%zd_ax4 zn=%zn_ax4
+}
### SME2 Multi-vector Multiple Vectors SVE Destructive
@@ -380,10 +388,18 @@ FAMIN_nn 1100000 1 .. 1 ..... 1011.0 01010 .... 1 @z2z_4x4
FSCALE_nn 1100000 1 .. 1 ..... 1011.0 01100 .... 0 @z2z_4x4
}
-FMUL_nn 1100000 1 esz:2 1 ....0 111001 ....0 ....0 \
+{
+ BFMUL_nn 1100000 1 00 1 ....0 111001 ....0 ....0 \
+ &zzz_en n=2 zd=%zd_ax2 zn=%zn_ax2 zm=%zm_ax2 esz=0
+ FMUL_nn 1100000 1 esz:2 1 ....0 111001 ....0 ....0 \
&zzz_en n=2 zd=%zd_ax2 zn=%zn_ax2 zm=%zm_ax2
-FMUL_nn 1100000 1 esz:2 1 ...01 111001 ...00 ...00 \
+}
+{
+ BFMUL_nn 1100000 1 00 1 ...01 111001 ...00 ...00 \
+ &zzz_en n=4 zd=%zd_ax4 zn=%zn_ax4 zm=%zm_ax4 esz=0
+ FMUL_nn 1100000 1 esz:2 1 ...01 111001 ...00 ...00 \
&zzz_en n=4 zd=%zd_ax4 zn=%zn_ax4 zm=%zm_ax4
+}
### SME2 Multi-vector Multiple and Single Array Vectors
diff --git a/target/arm/tcg/translate-sme.c b/target/arm/tcg/translate-sme.c
index d28574a8cf..08b25b0be9 100644
--- a/target/arm/tcg/translate-sme.c
+++ b/target/arm/tcg/translate-sme.c
@@ -903,6 +903,10 @@ static gen_helper_gvec_3_ptr * const f_vector_fmul[4] = {
};
TRANS_FEAT(FMUL_n1, aa64_sme2p2, do_zzz_n1_fpst, a, f_vector_fmul[a->esz])
TRANS_FEAT(FMUL_nn, aa64_sme2p2, do_zzz_nn_fpst, a, f_vector_fmul[a->esz])
+TRANS_FEAT(BFMUL_n1, aa64_sme2_sve_bfscale, do_zzz_n1_fpst, a,
+ gen_helper_gvec_fmul_b16)
+TRANS_FEAT(BFMUL_nn, aa64_sme2_sve_bfscale, do_zzz_nn_fpst, a,
+ gen_helper_gvec_fmul_b16)
/* Add/Sub vector Z[m] to each Z[n*N] with result in ZA[d*N]. */
static bool do_azz_n1(DisasContext *s, arg_azz_n *a, int esz,