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Rozycki" , Thomas Huth , Aurelien Jarno , Richard Henderson , Aleksandar Rikalo Subject: [RFC PATCH 24/42] target/mips/tx79: Introduce PROT3W opcode (Parallel Rotate 3 Words) Date: Sun, 14 Feb 2021 18:58:54 +0100 Message-Id: <20210214175912.732946-25-f4bug@amsat.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210214175912.732946-1-f4bug@amsat.org> References: <20210214175912.732946-1-f4bug@amsat.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @gmail.com) Introduce the PROT3W opcode (Parallel Rotate 3 Words). Signed-off-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Richard Henderson --- target/mips/tx79.decode | 1 + target/mips/tx79_translate.c | 28 ++++++++++++++++++++++++++++ 2 files changed, 29 insertions(+) diff --git a/target/mips/tx79.decode b/target/mips/tx79.decode index 0ea9fc95568..79001359242 100644 --- a/target/mips/tx79.decode +++ b/target/mips/tx79.decode @@ -56,6 +56,7 @@ PAND 011100 ..... ..... ..... 10010 001001 @= rs_rt_rd PXOR 011100 ..... ..... ..... 10011 001001 @rs_rt_rd PEXEH 011100 00000 ..... ..... 11010 001001 @rt_rd PEXEW 011100 00000 ..... ..... 11110 001001 @rt_rd +PROT3W 011100 00000 ..... ..... 11111 001001 @rt_rd =20 # MMI3 =20 diff --git a/target/mips/tx79_translate.c b/target/mips/tx79_translate.c index 59451a043a4..c25f61d382c 100644 --- a/target/mips/tx79_translate.c +++ b/target/mips/tx79_translate.c @@ -753,3 +753,31 @@ static bool trans_PEXEW(DisasContext *ctx, arg_rtype *= a) =20 return true; } + +/* Parallel Rotate 3 Words Left */ +static bool trans_PROT3W(DisasContext *ctx, arg_rtype *a) +{ + TCGv_i64 ax; + + if (a->rd =3D=3D 0) { + /* nop */ + return true; + } + if (a->rt =3D=3D 0) { + tcg_gen_movi_i64(cpu_gpr[a->rd], 0); + tcg_gen_movi_i64(cpu_gpr_hi[a->rd], 0); + return true; + } + + ax =3D tcg_temp_new_i64(); + + tcg_gen_mov_i64(ax, cpu_gpr_hi[a->rt]); + tcg_gen_deposit_i64(cpu_gpr_hi[a->rd], ax, cpu_gpr[a->rt], 0, 32); + + tcg_gen_deposit_i64(cpu_gpr[a->rd], cpu_gpr[a->rt], ax, 0, 32); + tcg_gen_rotri_i64(cpu_gpr[a->rd], cpu_gpr[a->rd], 32); + + tcg_temp_free(ax); + + return true; +} --=20 2.26.2