From 75094c334e4c2f6d4646274cd73006d8931a31de Mon Sep 17 00:00:00 2001 From: =?utf8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Tue, 19 Oct 2021 08:22:31 +0200 Subject: [PATCH] target/mips: Convert MSA LDI opcode to decodetree MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Convert the LDI opcode (Immediate Load) to decodetree. Since it overlaps with the generic MSA handler, use a decodetree overlap group. Since the 'data format' field is a constant value, use tcg_constant_i32() instead of a TCG temporary. Reviewed-by: Jiaxun Yang Reviewed-by: Richard Henderson Signed-off-by: Philippe Mathieu-Daudé Message-Id: <20211028210843.2120802-9-f4bug@amsat.org> --- target/mips/tcg/msa.decode | 8 +++++++- target/mips/tcg/msa_translate.c | 22 ++++++++++++++-------- 2 files changed, 21 insertions(+), 9 deletions(-) diff --git a/target/mips/tcg/msa.decode b/target/mips/tcg/msa.decode index 56419a24eb..bdfe5a24cb 100644 --- a/target/mips/tcg/msa.decode +++ b/target/mips/tcg/msa.decode @@ -14,10 +14,12 @@ &r rs rt rd sa &msa_bz df wt sa +&msa_ldi df wd sa @lsa ...... rs:5 rt:5 rd:5 ... sa:2 ...... &r @bz_v ...... ... .. wt:5 sa:16 &msa_bz df=3 @bz ...... ... df:2 wt:5 sa:16 &msa_bz +@ldi ...... ... df:2 sa:s10 wd:5 ...... &msa_ldi LSA 000000 ..... ..... ..... 000 .. 000101 @lsa DLSA 000000 ..... ..... ..... 000 .. 010101 @lsa @@ -27,4 +29,8 @@ BNZ_V 010001 01111 ..... ................ @bz_v BZ 010001 110 .. ..... ................ @bz BNZ 010001 111 .. ..... ................ @bz -MSA 011110 -------------------------- +{ + LDI 011110 110 .. .......... ..... 000111 @ldi + + MSA 011110 -------------------------- +} diff --git a/target/mips/tcg/msa_translate.c b/target/mips/tcg/msa_translate.c index 8311730f0a..94c69a668d 100644 --- a/target/mips/tcg/msa_translate.c +++ b/target/mips/tcg/msa_translate.c @@ -70,7 +70,6 @@ enum { OPC_CLEI_S_df = (0x4 << 23) | OPC_MSA_I5_07, OPC_MINI_U_df = (0x5 << 23) | OPC_MSA_I5_06, OPC_CLEI_U_df = (0x5 << 23) | OPC_MSA_I5_07, - OPC_LDI_df = (0x6 << 23) | OPC_MSA_I5_07, /* I8 instruction */ OPC_ANDI_B = (0x0 << 24) | OPC_MSA_I8_00, @@ -515,13 +514,6 @@ static void gen_msa_i5(DisasContext *ctx) case OPC_CLEI_U_df: gen_helper_msa_clei_u_df(cpu_env, tdf, twd, tws, timm); break; - case OPC_LDI_df: - { - int32_t s10 = sextract32(ctx->opcode, 11, 10); - tcg_gen_movi_i32(timm, s10); - gen_helper_msa_ldi_df(cpu_env, tdf, twd, timm); - } - break; default: MIPS_INVAL("MSA instruction"); gen_reserved_instruction(ctx); @@ -534,6 +526,20 @@ static void gen_msa_i5(DisasContext *ctx) tcg_temp_free_i32(timm); } +static bool trans_LDI(DisasContext *ctx, arg_msa_ldi *a) +{ + if (!check_msa_enabled(ctx)) { + return true; + } + + gen_helper_msa_ldi_df(cpu_env, + tcg_constant_i32(a->df), + tcg_constant_i32(a->wd), + tcg_constant_i32(a->sa)); + + return true; +} + static void gen_msa_bit(DisasContext *ctx) { #define MASK_MSA_BIT(op) (MASK_MSA_MINOR(op) | (op & (0x7 << 23))) -- 2.11.0