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target/mips: Support R5900 three-operand MADD1 and MADDU1 instructions

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The three-operand MADD and MADDU are specific to R5900 cores.

Backports commit a95c4c26f1dc233987350e7cb1cf62d46ade5ce5 from qemu
This commit is contained in:
Fredrik Noring 2019-01-05 08:05:34 -05:00 committed by Lioncash
parent 76bc93690f
commit ee4b59e981
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GPG key ID: 4E3C3CC1031BA9C7
1 changed files with 15 additions and 9 deletions
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24
qemu/target/mips/translate.c
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@ -5105,7 +5105,7 @@ static void gen_muldiv(DisasContext *ctx, uint32_t opc,
*
* and
*
* MADD[U] rd, rs, rt
* MADD[U][1] rd, rs, rt
*
* such that
*
@ -5168,6 +5168,9 @@ static void gen_mul_txx9(DisasContext *ctx, uint32_t opc,
tcg_temp_free_i32(tcg_ctx, t3);
}
break;
case MMI_OPC_MADD1:
acc = 1;
/* Fall through */
case MMI_OPC_MADD:
{
TCGv_i64 t2 = tcg_temp_new_i64(tcg_ctx);
@ -5179,14 +5182,17 @@ static void gen_mul_txx9(DisasContext *ctx, uint32_t opc,
tcg_gen_concat_tl_i64(tcg_ctx, t3, tcg_ctx->cpu_LO[acc], tcg_ctx->cpu_HI[acc]);
tcg_gen_add_i64(tcg_ctx, t2, t2, t3);
tcg_temp_free_i64(tcg_ctx, t3);
gen_move_low32(tcg_ctx, tcg_ctx->cpu_LO[acc], t2);
gen_move_high32(tcg_ctx, tcg_ctx->cpu_HI[acc], t2);
gen_move_low32(ctx, tcg_ctx->cpu_LO[acc], t2);
gen_move_high32(ctx, tcg_ctx->cpu_HI[acc], t2);
if (rd) {
gen_move_low32(tcg_ctx, tcg_ctx->cpu_gpr[rd], t2);
gen_move_low32(ctx, tcg_ctx->cpu_gpr[rd], t2);
}
tcg_temp_free_i64(tcg_ctx, t2);
}
break;
case MMI_OPC_MADDU1:
acc = 1;
/* Fall through */
case MMI_OPC_MADDU:
{
TCGv_i64 t2 = tcg_temp_new_i64(tcg_ctx);
@ -5200,10 +5206,10 @@ static void gen_mul_txx9(DisasContext *ctx, uint32_t opc,
tcg_gen_concat_tl_i64(tcg_ctx, t3, tcg_ctx->cpu_LO[acc], tcg_ctx->cpu_HI[acc]);
tcg_gen_add_i64(tcg_ctx, t2, t2, t3);
tcg_temp_free_i64(tcg_ctx, t3);
gen_move_low32(tcg_ctx, tcg_ctx->cpu_LO[acc], t2);
gen_move_high32(tcg_ctx, tcg_ctx->cpu_HI[acc], t2);
gen_move_low32(ctx, tcg_ctx->cpu_LO[acc], t2);
gen_move_high32(ctx, tcg_ctx->cpu_HI[acc], t2);
if (rd) {
gen_move_low32(tcg_ctx, tcg_ctx->cpu_gpr[rd], t2);
gen_move_low32(ctx, tcg_ctx->cpu_gpr[rd], t2);
}
tcg_temp_free_i64(tcg_ctx, t2);
}
@ -27537,6 +27543,8 @@ static void decode_mmi(CPUMIPSState *env, DisasContext *ctx)
case MMI_OPC_MULTU1:
case MMI_OPC_MADD:
case MMI_OPC_MADDU:
case MMI_OPC_MADD1:
case MMI_OPC_MADDU1:
gen_mul_txx9(ctx, opc, rd, rs, rt);
break;
case MMI_OPC_DIV1:
@ -27552,8 +27560,6 @@ static void decode_mmi(CPUMIPSState *env, DisasContext *ctx)
gen_HILO1_tx79(ctx, opc, rd);
break;
case MMI_OPC_PLZCW: /* TODO: MMI_OPC_PLZCW */
case MMI_OPC_MADD1: /* TODO: MMI_OPC_MADD1 */
case MMI_OPC_MADDU1: /* TODO: MMI_OPC_MADDU1 */
case MMI_OPC_PMFHL: /* TODO: MMI_OPC_PMFHL */
case MMI_OPC_PMTHL: /* TODO: MMI_OPC_PMTHL */
case MMI_OPC_PSLLH: /* TODO: MMI_OPC_PSLLH */