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target/mips/mxu: Add Q16SLL Q16SLR Q16SAR instructions 

These instructions are same data shift in various directions, thus one
generation function is implemented for all three.

Signed-off-by: Siarhei Volkau <lis8215@gmail.com>
Message-Id: <20230608104222.1520143-27-lis8215@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
This commit is contained in:
Siarhei Volkau 2023-06-08 13:42:15 +03:00 committed by Philippe Mathieu-Daudé
parent f1fb103822
commit 52fe25d445
1 changed files with 78 additions and 0 deletions
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78
target/mips/tcg/mxu_translate.c
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@ -398,6 +398,9 @@ enum {
OPC_MXU_D32SLR = 0x31,
OPC_MXU_D32SARL = 0x32,
OPC_MXU_D32SAR = 0x33,
OPC_MXU_Q16SLL = 0x34,
OPC_MXU_Q16SLR = 0x35,
OPC_MXU_Q16SAR = 0x37,
OPC_MXU__POOL19 = 0x38,
};
@ -1789,6 +1792,72 @@ static void gen_mxu_d32sarl(DisasContext *ctx, bool sarw)
}
}
/*
* Q16SLL XRa, XRd, XRb, XRc, SFT4
* Quad 16-bit shift left from XRb and XRc to SFT4
* bits (0..15). Store to XRa and XRd respectively.
* Q16SLR XRa, XRd, XRb, XRc, SFT4
* Quad 16-bit shift logic right from XRb and XRc
* to SFT4 bits (0..15). Store to XRa and XRd respectively.
* Q16SAR XRa, XRd, XRb, XRc, SFT4
* Quad 16-bit shift arithmetic right from XRb and XRc
* to SFT4 bits (0..15). Store to XRa and XRd respectively.
*/
static void gen_mxu_q16sxx(DisasContext *ctx, bool right, bool arithmetic)
{
uint32_t XRa, XRb, XRc, XRd, sft4;
XRa = extract32(ctx->opcode, 6, 4);
XRb = extract32(ctx->opcode, 10, 4);
XRc = extract32(ctx->opcode, 14, 4);
XRd = extract32(ctx->opcode, 18, 4);
sft4 = extract32(ctx->opcode, 22, 4);
TCGv t0 = tcg_temp_new();
TCGv t1 = tcg_temp_new();
TCGv t2 = tcg_temp_new();
TCGv t3 = tcg_temp_new();
gen_load_mxu_gpr(t0, XRb);
gen_load_mxu_gpr(t2, XRc);
if (arithmetic) {
tcg_gen_sextract_tl(t1, t0, 16, 16);
tcg_gen_sextract_tl(t0, t0, 0, 16);
tcg_gen_sextract_tl(t3, t2, 16, 16);
tcg_gen_sextract_tl(t2, t2, 0, 16);
} else {
tcg_gen_extract_tl(t1, t0, 16, 16);
tcg_gen_extract_tl(t0, t0, 0, 16);
tcg_gen_extract_tl(t3, t2, 16, 16);
tcg_gen_extract_tl(t2, t2, 0, 16);
}
if (right) {
if (arithmetic) {
tcg_gen_sari_tl(t0, t0, sft4);
tcg_gen_sari_tl(t1, t1, sft4);
tcg_gen_sari_tl(t2, t2, sft4);
tcg_gen_sari_tl(t3, t3, sft4);
} else {
tcg_gen_shri_tl(t0, t0, sft4);
tcg_gen_shri_tl(t1, t1, sft4);
tcg_gen_shri_tl(t2, t2, sft4);
tcg_gen_shri_tl(t3, t3, sft4);
}
} else {
tcg_gen_shli_tl(t0, t0, sft4);
tcg_gen_shli_tl(t1, t1, sft4);
tcg_gen_shli_tl(t2, t2, sft4);
tcg_gen_shli_tl(t3, t3, sft4);
}
tcg_gen_deposit_tl(t0, t0, t1, 16, 16);
tcg_gen_deposit_tl(t2, t2, t3, 16, 16);
gen_store_mxu_gpr(t0, XRa);
gen_store_mxu_gpr(t2, XRd);
}
/*
* MXU instruction category max/min/avg
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@ -4328,6 +4397,15 @@ bool decode_ase_mxu(DisasContext *ctx, uint32_t insn)
case OPC_MXU_D32SAR:
gen_mxu_d32sxx(ctx, true, true);
break;
case OPC_MXU_Q16SLL:
gen_mxu_q16sxx(ctx, false, false);
break;
case OPC_MXU_Q16SLR:
gen_mxu_q16sxx(ctx, true, false);
break;
case OPC_MXU_Q16SAR:
gen_mxu_q16sxx(ctx, true, true);
break;
case OPC_MXU__POOL19:
decode_opc_mxu__pool19(ctx);
break;