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target/mips: Support R5900 three-operand MADD1 and MADDU1 instructions
The three-operand MADD and MADDU are specific to R5900 cores. Backports commit a95c4c26f1dc233987350e7cb1cf62d46ade5ce5 from qemu
This commit is contained in:
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76bc93690f
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@ -5105,7 +5105,7 @@ static void gen_muldiv(DisasContext *ctx, uint32_t opc,
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*
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*
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* and
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* and
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*
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*
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* MADD[U] rd, rs, rt
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* MADD[U][1] rd, rs, rt
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*
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*
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* such that
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* such that
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*
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*
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@ -5168,6 +5168,9 @@ static void gen_mul_txx9(DisasContext *ctx, uint32_t opc,
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tcg_temp_free_i32(tcg_ctx, t3);
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tcg_temp_free_i32(tcg_ctx, t3);
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}
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}
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break;
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break;
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case MMI_OPC_MADD1:
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acc = 1;
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/* Fall through */
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case MMI_OPC_MADD:
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case MMI_OPC_MADD:
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{
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{
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TCGv_i64 t2 = tcg_temp_new_i64(tcg_ctx);
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TCGv_i64 t2 = tcg_temp_new_i64(tcg_ctx);
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@ -5179,14 +5182,17 @@ static void gen_mul_txx9(DisasContext *ctx, uint32_t opc,
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tcg_gen_concat_tl_i64(tcg_ctx, t3, tcg_ctx->cpu_LO[acc], tcg_ctx->cpu_HI[acc]);
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tcg_gen_concat_tl_i64(tcg_ctx, t3, tcg_ctx->cpu_LO[acc], tcg_ctx->cpu_HI[acc]);
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tcg_gen_add_i64(tcg_ctx, t2, t2, t3);
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tcg_gen_add_i64(tcg_ctx, t2, t2, t3);
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tcg_temp_free_i64(tcg_ctx, t3);
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tcg_temp_free_i64(tcg_ctx, t3);
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gen_move_low32(tcg_ctx, tcg_ctx->cpu_LO[acc], t2);
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gen_move_low32(ctx, tcg_ctx->cpu_LO[acc], t2);
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gen_move_high32(tcg_ctx, tcg_ctx->cpu_HI[acc], t2);
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gen_move_high32(ctx, tcg_ctx->cpu_HI[acc], t2);
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if (rd) {
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if (rd) {
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gen_move_low32(tcg_ctx, tcg_ctx->cpu_gpr[rd], t2);
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gen_move_low32(ctx, tcg_ctx->cpu_gpr[rd], t2);
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}
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}
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tcg_temp_free_i64(tcg_ctx, t2);
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tcg_temp_free_i64(tcg_ctx, t2);
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}
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}
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break;
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break;
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case MMI_OPC_MADDU1:
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acc = 1;
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/* Fall through */
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case MMI_OPC_MADDU:
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case MMI_OPC_MADDU:
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{
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{
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TCGv_i64 t2 = tcg_temp_new_i64(tcg_ctx);
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TCGv_i64 t2 = tcg_temp_new_i64(tcg_ctx);
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@ -5200,10 +5206,10 @@ static void gen_mul_txx9(DisasContext *ctx, uint32_t opc,
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tcg_gen_concat_tl_i64(tcg_ctx, t3, tcg_ctx->cpu_LO[acc], tcg_ctx->cpu_HI[acc]);
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tcg_gen_concat_tl_i64(tcg_ctx, t3, tcg_ctx->cpu_LO[acc], tcg_ctx->cpu_HI[acc]);
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tcg_gen_add_i64(tcg_ctx, t2, t2, t3);
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tcg_gen_add_i64(tcg_ctx, t2, t2, t3);
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tcg_temp_free_i64(tcg_ctx, t3);
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tcg_temp_free_i64(tcg_ctx, t3);
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gen_move_low32(tcg_ctx, tcg_ctx->cpu_LO[acc], t2);
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gen_move_low32(ctx, tcg_ctx->cpu_LO[acc], t2);
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gen_move_high32(tcg_ctx, tcg_ctx->cpu_HI[acc], t2);
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gen_move_high32(ctx, tcg_ctx->cpu_HI[acc], t2);
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if (rd) {
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if (rd) {
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gen_move_low32(tcg_ctx, tcg_ctx->cpu_gpr[rd], t2);
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gen_move_low32(ctx, tcg_ctx->cpu_gpr[rd], t2);
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}
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}
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tcg_temp_free_i64(tcg_ctx, t2);
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tcg_temp_free_i64(tcg_ctx, t2);
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}
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}
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@ -27537,6 +27543,8 @@ static void decode_mmi(CPUMIPSState *env, DisasContext *ctx)
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case MMI_OPC_MULTU1:
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case MMI_OPC_MULTU1:
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case MMI_OPC_MADD:
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case MMI_OPC_MADD:
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case MMI_OPC_MADDU:
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case MMI_OPC_MADDU:
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case MMI_OPC_MADD1:
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case MMI_OPC_MADDU1:
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gen_mul_txx9(ctx, opc, rd, rs, rt);
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gen_mul_txx9(ctx, opc, rd, rs, rt);
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break;
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break;
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case MMI_OPC_DIV1:
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case MMI_OPC_DIV1:
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@ -27552,8 +27560,6 @@ static void decode_mmi(CPUMIPSState *env, DisasContext *ctx)
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gen_HILO1_tx79(ctx, opc, rd);
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gen_HILO1_tx79(ctx, opc, rd);
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break;
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break;
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case MMI_OPC_PLZCW: /* TODO: MMI_OPC_PLZCW */
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case MMI_OPC_PLZCW: /* TODO: MMI_OPC_PLZCW */
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case MMI_OPC_MADD1: /* TODO: MMI_OPC_MADD1 */
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case MMI_OPC_MADDU1: /* TODO: MMI_OPC_MADDU1 */
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case MMI_OPC_PMFHL: /* TODO: MMI_OPC_PMFHL */
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case MMI_OPC_PMFHL: /* TODO: MMI_OPC_PMFHL */
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case MMI_OPC_PMTHL: /* TODO: MMI_OPC_PMTHL */
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case MMI_OPC_PMTHL: /* TODO: MMI_OPC_PMTHL */
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case MMI_OPC_PSLLH: /* TODO: MMI_OPC_PSLLH */
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case MMI_OPC_PSLLH: /* TODO: MMI_OPC_PSLLH */
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