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target/mips: Convert MSA FILL opcode to decodetree 

Convert the FILL opcode (Vector Fill from GPR) to decodetree.

Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20211028210843.2120802-16-f4bug@amsat.org>
This commit is contained in:
Philippe Mathieu-Daudé 2021-10-19 10:20:04 +02:00
parent 5c5b64000c
commit 675bf34a6f
2 changed files with 21 additions and 12 deletions
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2
target/mips/tcg/msa.decode
View File

@ -27,6 +27,7 @@
@ldst ...... sa:s10 ws:5 wd:5 .... df:2 &msa_i
@bz_v ...... ... .. wt:5 sa:16 &msa_bz df=3
@bz ...... ... df:2 wt:5 sa:16 &msa_bz
@2r ...... ........ df:2 ws:5 wd:5 ...... &msa_r wt=0
@2rf ...... ......... . ws:5 wd:5 ...... &msa_r wt=0 df=%2r_df_w
@u5 ...... ... df:2 sa:5 ws:5 wd:5 ...... &msa_i
@s5 ...... ... df:2 sa:s5 ws:5 wd:5 ...... &msa_i
@ -82,6 +83,7 @@ BNZ 010001 111 .. ..... ................ @bz
SRARI 011110 010 ....... ..... ..... 001010 @bit
SRLRI 011110 011 ....... ..... ..... 001010 @bit
FILL 011110 11000000 .. ..... ..... 011110 @2r
FCLASS 011110 110010000 . ..... ..... 011110 @2rf
FTRUNC_S 011110 110010001 . ..... ..... 011110 @2rf
FTRUNC_U 011110 110010010 . ..... ..... 011110 @2rf

31
target/mips/tcg/msa_translate.c
View File

@ -61,7 +61,6 @@ enum {
OPC_MSA_2R = (0x18 << 21) | OPC_MSA_VEC,
/* 2R instruction df(bits 17..16) = _b, _h, _w, _d */
OPC_FILL_df = (0x00 << 18) | OPC_MSA_2R,
OPC_PCNT_df = (0x01 << 18) | OPC_MSA_2R,
OPC_NLOC_df = (0x02 << 18) | OPC_MSA_2R,
OPC_NLZC_df = (0x03 << 18) | OPC_MSA_2R,
@ -1847,17 +1846,6 @@ static void gen_msa_2r(DisasContext *ctx)
TCGv_i32 tws = tcg_const_i32(ws);
switch (MASK_MSA_2R(ctx->opcode)) {
case OPC_FILL_df:
#if !defined(TARGET_MIPS64)
/* Double format valid only for MIPS64 */
if (df == DF_DOUBLE) {
gen_reserved_instruction(ctx);
break;
}
#endif
gen_helper_msa_fill_df(cpu_env, tcg_constant_i32(df),
twd, tws); /* trs */
break;
case OPC_NLOC_df:
switch (df) {
case DF_BYTE:
@ -1916,6 +1904,25 @@ static void gen_msa_2r(DisasContext *ctx)
tcg_temp_free_i32(tws);
}
static bool trans_FILL(DisasContext *ctx, arg_msa_r *a)
{
if (TARGET_LONG_BITS != 64 && a->df == DF_DOUBLE) {
/* Double format valid only for MIPS64 */
return false;
}
if (!check_msa_enabled(ctx)) {
return true;
}
gen_helper_msa_fill_df(cpu_env,
tcg_constant_i32(a->df),
tcg_constant_i32(a->wd),
tcg_constant_i32(a->ws));
return true;
}
static bool trans_msa_2rf(DisasContext *ctx, arg_msa_r *a,
gen_helper_piii *gen_msa_2rf)
{