From 863f264d10f917a8c3b2f8f6c3f78d0189fa48e7 Mon Sep 17 00:00:00 2001 From: Yongbok Kim Date: Sat, 1 Nov 2014 05:28:40 +0000 Subject: target-mips: add msa_reset(), global msa register add msa_reset() and global msa register (d type only) Reviewed-by: James Hogan Signed-off-by: Yongbok Kim Signed-off-by: Leon Alrae --- target-mips/translate.c | 56 ++++++++++++++++++++++++++++++++++++++++++++ target-mips/translate_init.c | 34 +++++++++++++++++++++++++++ 2 files changed, 90 insertions(+) (limited to 'target-mips') diff --git a/target-mips/translate.c b/target-mips/translate.c index 555f89b843..baa1826bf6 100644 --- a/target-mips/translate.c +++ b/target-mips/translate.c @@ -1356,6 +1356,7 @@ static TCGv cpu_dspctrl, btarget, bcond; static TCGv_i32 hflags; static TCGv_i32 fpu_fcr0, fpu_fcr31; static TCGv_i64 fpu_f64[32]; +static TCGv_i64 msa_wr_d[64]; static uint32_t gen_opc_hflags[OPC_BUF_SIZE]; static target_ulong gen_opc_btarget[OPC_BUF_SIZE]; @@ -1454,6 +1455,25 @@ static const char * const fregnames[] = { "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31", }; +static const char * const msaregnames[] = { + "w0.d0", "w0.d1", "w1.d0", "w1.d1", + "w2.d0", "w2.d1", "w3.d0", "w3.d1", + "w4.d0", "w4.d1", "w5.d0", "w5.d1", + "w6.d0", "w6.d1", "w7.d0", "w7.d1", + "w8.d0", "w8.d1", "w9.d0", "w9.d1", + "w10.d0", "w10.d1", "w11.d0", "w11.d1", + "w12.d0", "w12.d1", "w13.d0", "w13.d1", + "w14.d0", "w14.d1", "w15.d0", "w15.d1", + "w16.d0", "w16.d1", "w17.d0", "w17.d1", + "w18.d0", "w18.d1", "w19.d0", "w19.d1", + "w20.d0", "w20.d1", "w21.d0", "w21.d1", + "w22.d0", "w22.d1", "w23.d0", "w23.d1", + "w24.d0", "w24.d1", "w25.d0", "w25.d1", + "w26.d0", "w26.d1", "w27.d0", "w27.d1", + "w28.d0", "w28.d1", "w29.d0", "w29.d1", + "w30.d0", "w30.d1", "w31.d0", "w31.d1", +}; + #define MIPS_DEBUG(fmt, ...) \ do { \ if (MIPS_DEBUG_DISAS) { \ @@ -17206,6 +17226,27 @@ static void decode_opc_special3(CPUMIPSState *env, DisasContext *ctx) } } +/* MIPS SIMD Architecture (MSA) */ +static inline int check_msa_access(DisasContext *ctx) +{ + if (unlikely((ctx->hflags & MIPS_HFLAG_FPU) && + !(ctx->hflags & MIPS_HFLAG_F64))) { + generate_exception(ctx, EXCP_RI); + return 0; + } + + if (unlikely(!(ctx->hflags & MIPS_HFLAG_MSA))) { + if (ctx->insn_flags & ASE_MSA) { + generate_exception(ctx, EXCP_MSADIS); + return 0; + } else { + generate_exception(ctx, EXCP_RI); + return 0; + } + } + return 1; +} + static void decode_opc (CPUMIPSState *env, DisasContext *ctx) { int32_t offset; @@ -18136,6 +18177,15 @@ void mips_tcg_init(void) fpu_f64[i] = tcg_global_mem_new_i64(TCG_AREG0, off, fregnames[i]); } + for (i = 0; i < 32; i++) { + int off = offsetof(CPUMIPSState, active_fpu.fpr[i].wr.d[0]); + msa_wr_d[i * 2] = + tcg_global_mem_new_i64(TCG_AREG0, off, msaregnames[i * 2]); + off = offsetof(CPUMIPSState, active_fpu.fpr[i].wr.d[1]); + msa_wr_d[i * 2 + 1] = + tcg_global_mem_new_i64(TCG_AREG0, off, msaregnames[i * 2 + 1]); + } + cpu_PC = tcg_global_mem_new(TCG_AREG0, offsetof(CPUMIPSState, active_tc.PC), "PC"); for (i = 0; i < MIPS_DSP_ACC; i++) { @@ -18243,6 +18293,7 @@ void cpu_state_reset(CPUMIPSState *env) env->CP0_PageGrain_rw_bitmask = env->cpu_model->CP0_PageGrain_rw_bitmask; env->CP0_PageGrain = env->cpu_model->CP0_PageGrain; env->active_fpu.fcr0 = env->cpu_model->CP1_fcr0; + env->msair = env->cpu_model->MSAIR; env->insn_flags = env->cpu_model->insn_flags; #if defined(CONFIG_USER_ONLY) @@ -18340,6 +18391,11 @@ void cpu_state_reset(CPUMIPSState *env) env->CP0_Status |= (1 << CP0St_FR); } + /* MSA */ + if (env->CP0_Config3 & (1 << CP0C3_MSAP)) { + msa_reset(env); + } + compute_hflags(env); cs->exception_index = EXCP_NONE; } diff --git a/target-mips/translate_init.c b/target-mips/translate_init.c index 0b70d05449..a69a724d2e 100644 --- a/target-mips/translate_init.c +++ b/target-mips/translate_init.c @@ -84,6 +84,7 @@ struct mips_def_t { int32_t CP0_TCStatus_rw_bitmask; int32_t CP0_SRSCtl; int32_t CP1_fcr0; + int32_t MSAIR; int32_t SEGBITS; int32_t PABITS; int32_t CP0_SRSConf0_rw_bitmask; @@ -729,3 +730,36 @@ static void mvp_init (CPUMIPSState *env, const mips_def_t *def) (0x0 << CP0MVPC1_PCX) | (0x0 << CP0MVPC1_PCP2) | (0x1 << CP0MVPC1_PCP1); } + +static void msa_reset(CPUMIPSState *env) +{ +#ifdef CONFIG_USER_ONLY + /* MSA access enabled */ + env->CP0_Config5 |= 1 << CP0C5_MSAEn; + env->CP0_Status |= (1 << CP0St_CU1) | (1 << CP0St_FR); +#endif + + /* MSA CSR: + - non-signaling floating point exception mode off (NX bit is 0) + - Cause, Enables, and Flags are all 0 + - round to nearest / ties to even (RM bits are 0) */ + env->active_tc.msacsr = 0; + + /* tininess detected after rounding.*/ + set_float_detect_tininess(float_tininess_after_rounding, + &env->active_tc.msa_fp_status); + + /* clear float_status exception flags */ + set_float_exception_flags(0, &env->active_tc.msa_fp_status); + + /* set float_status rounding mode */ + set_float_rounding_mode(float_round_nearest_even, + &env->active_tc.msa_fp_status); + + /* set float_status flush modes */ + set_flush_to_zero(0, &env->active_tc.msa_fp_status); + set_flush_inputs_to_zero(0, &env->active_tc.msa_fp_status); + + /* clear float_status nan mode */ + set_default_nan_mode(0, &env->active_tc.msa_fp_status); +} -- cgit v1.2.1