From fd487f83ea92d790559813c5a0a719c30ca9ecde Mon Sep 17 00:00:00 2001 From: Mateja Marjanovic Date: Mon, 4 Mar 2019 16:13:15 +0100 Subject: target/mips: Add emulation of MMI instruction PCPYUD Add emulation of MMI instruction PCPYUD. The emulation is implemented using TCG front end operations directly to achieve better performance. Signed-off-by: Mateja Marjanovic Signed-off-by: Aleksandar Markovic Reviewed-by: Aleksandar Rikalo Message-Id: <1551712405-2530-4-git-send-email-mateja.marjanovic@rt-rk.com> --- target/mips/translate.c | 43 ++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 42 insertions(+), 1 deletion(-) diff --git a/target/mips/translate.c b/target/mips/translate.c index b4fcbb1780..e37722dfff 100644 --- a/target/mips/translate.c +++ b/target/mips/translate.c @@ -24458,6 +24458,45 @@ static void gen_mmi_pcpyld(DisasContext *ctx) } } +/* + * PCPYUD rd, rs, rt + * + * Parallel Copy Upper Doubleword + * + * 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 + * +-----------+---------+---------+---------+---------+-----------+ + * | MMI | rs | rt | rd | PCPYUD | MMI3 | + * +-----------+---------+---------+---------+---------+-----------+ + */ +static void gen_mmi_pcpyud(DisasContext *ctx) +{ + uint32_t rs, rt, rd; + uint32_t opcode; + + opcode = ctx->opcode; + + rs = extract32(opcode, 21, 5); + rt = extract32(opcode, 16, 5); + rd = extract32(opcode, 11, 5); + + if (rd == 0) { + /* nop */ + } else { + if (rs == 0) { + tcg_gen_movi_i64(cpu_gpr[rd], 0); + } else { + tcg_gen_mov_i64(cpu_gpr[rd], cpu_mmr[rs]); + } + if (rt == 0) { + tcg_gen_movi_i64(cpu_mmr[rd], 0); + } else { + if (rd != rt) { + tcg_gen_mov_i64(cpu_mmr[rd], cpu_mmr[rt]); + } + } + } +} + #endif @@ -27508,7 +27547,6 @@ static void decode_mmi3(CPUMIPSState *env, DisasContext *ctx) case MMI_OPC_3_PINTEH: /* TODO: MMI_OPC_3_PINTEH */ case MMI_OPC_3_PMULTUW: /* TODO: MMI_OPC_3_PMULTUW */ case MMI_OPC_3_PDIVUW: /* TODO: MMI_OPC_3_PDIVUW */ - case MMI_OPC_3_PCPYUD: /* TODO: MMI_OPC_3_PCPYUD */ case MMI_OPC_3_POR: /* TODO: MMI_OPC_3_POR */ case MMI_OPC_3_PNOR: /* TODO: MMI_OPC_3_PNOR */ case MMI_OPC_3_PEXCH: /* TODO: MMI_OPC_3_PEXCH */ @@ -27518,6 +27556,9 @@ static void decode_mmi3(CPUMIPSState *env, DisasContext *ctx) case MMI_OPC_3_PCPYH: gen_mmi_pcpyh(ctx); break; + case MMI_OPC_3_PCPYUD: + gen_mmi_pcpyud(ctx); + break; default: MIPS_INVAL("TX79 MMI class MMI3"); generate_exception_end(ctx, EXCP_RI); -- cgit v1.2.3