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([71.212.149.95]) by smtp.gmail.com with ESMTPSA id b185-20020a6334c2000000b0058988954686sm70753pga.90.2023.10.13.14.29.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Oct 2023 14:29:02 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: mark.cave-ayland@ilande.co.uk, atar4qemu@gmail.com Subject: [PATCH 16/85] target/sparc: Move RDASR, STBAR, MEMBAR to decodetree Date: Fri, 13 Oct 2023 14:27:37 -0700 Message-Id: <20231013212846.165724-17-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231013212846.165724-1-richard.henderson@linaro.org> References: <20231013212846.165724-1-richard.henderson@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::329; envelope-from=richard.henderson@linaro.org; helo=mail-ot1-x329.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: qemu-devel-bounces+patch=linaro.org@nongnu.org Signed-off-by: Richard Henderson --- target/sparc/insns.decode | 22 +++ target/sparc/translate.c | 360 ++++++++++++++++++++++++-------------- 2 files changed, 253 insertions(+), 129 deletions(-) diff --git a/target/sparc/insns.decode b/target/sparc/insns.decode index 2945575268..8dc45f5abc 100644 --- a/target/sparc/insns.decode +++ b/target/sparc/insns.decode @@ -24,3 +24,25 @@ CALL 01 i:s30 Tcc_r 10 0 cond:4 111010 rs1:5 0 cc:1 0000000 rs2:5 Tcc_i 10 0 cond:4 111010 rs1:5 1 cc:1 0000 i:8 + +{ + [ + STBAR 10 00000 101000 01111 0 0000000000000 + MEMBAR 10 00000 101000 01111 1 000000 cmask:3 mmask:4 + + RDCCR 10 rd:5 101000 00010 0 0000000000000 + RDASI 10 rd:5 101000 00011 0 0000000000000 + RDTICK 10 rd:5 101000 00100 0 0000000000000 + RDPC 10 rd:5 101000 00101 0 0000000000000 + RDFPRS 10 rd:5 101000 00110 0 0000000000000 + RDASR17 10 rd:5 101000 10001 0 0000000000000 + RDGSR 10 rd:5 101000 10011 0 0000000000000 + RDSOFTINT 10 rd:5 101000 10110 0 0000000000000 + RDTICK_CMPR 10 rd:5 101000 10111 0 0000000000000 + RDSTICK 10 rd:5 101000 11000 0 0000000000000 + RDSTICK_CMPR 10 rd:5 101000 11001 0 0000000000000 + RDSTRAND_STATUS 10 rd:5 101000 11010 0 0000000000000 + ] + # Before v8, all rs1 accepted; otherwise rs1==0. + RDY 10 rd:5 101000 rs1:5 0 0000000000000 +} diff --git a/target/sparc/translate.c b/target/sparc/translate.c index a1c2796782..55ddd7b051 100644 --- a/target/sparc/translate.c +++ b/target/sparc/translate.c @@ -36,6 +36,10 @@ #include "exec/helper-info.c.inc" #undef HELPER_H +#ifndef TARGET_SPARC64 +#define gen_helper_rdccr(D, E) qemu_build_not_reached() +#endif + /* Dynamic PC, must exit to main loop. */ #define DYNAMIC_PC 1 /* Dynamic PC, one of two values according to jump_pc[T2]. */ @@ -2803,6 +2807,8 @@ static void gen_faligndata(TCGv dst, TCGv gsr, TCGv s1, TCGv s2) # define avail_32(C) true # define avail_64(C) false #endif +#define avail_ASR17(C) ((C)->def->features & CPU_FEATURE_ASR17) +#define avail_HYPV(C) ((C)->def->features & CPU_FEATURE_HYPV) /* Default case for non jump instructions. */ static bool advance_pc(DisasContext *dc) @@ -2903,6 +2909,12 @@ static bool advance_jump_cond(DisasContext *dc, DisasCompare *cmp, return true; } +static bool raise_priv(DisasContext *dc) +{ + gen_exception(dc, TT_PRIV_INSN); + return true; +} + static bool do_bpcc(DisasContext *dc, arg_bcc *a) { target_long target = dc->pc + a->i * 4; @@ -3082,6 +3094,215 @@ static bool do_tcc(DisasContext *dc, int cc, int cond, TRANS(Tcc_r, ALL, do_tcc, a->cc, a->cond, false, a->rs1, a->rs2) TRANS(Tcc_i, ALL, do_tcc, a->cc, a->cond, true, a->rs1, a->i) +static bool trans_STBAR(DisasContext *dc, arg_STBAR *a) +{ + tcg_gen_mb(TCG_MO_ST_ST | TCG_BAR_SC); + return advance_pc(dc); +} + +static bool trans_MEMBAR(DisasContext *dc, arg_MEMBAR *a) +{ + if (avail_32(dc)) { + return false; + } + if (a->mmask) { + /* Note TCG_MO_* was modeled on sparc64, so mmask matches. */ + tcg_gen_mb(a->mmask | TCG_BAR_SC); + } + if (a->cmask) { + /* For #Sync, etc, end the TB to recognize interrupts. */ + dc->base.is_jmp = DISAS_EXIT; + } + return advance_pc(dc); +} + +static bool do_rd_special(DisasContext *dc, bool priv, int rd, + TCGv (*func)(DisasContext *, TCGv)) +{ + if (!priv) { + return raise_priv(dc); + } + gen_store_gpr(dc, rd, func(dc, gen_dest_gpr(dc, rd))); + return advance_pc(dc); +} + +static TCGv do_rdy(DisasContext *dc, TCGv dst) +{ + return cpu_y; +} + +static bool trans_RDY(DisasContext *dc, arg_RDY *a) +{ + /* + * TODO: Need a feature bit for sparcv8. In the meantime, treat all + * 32-bit cpus like sparcv7, which ignores the rs1 field. + * This matches after all other ASR, so Leon3 Asr17 is handled first. + */ + if (avail_64(dc) && a->rs1 != 0) { + return false; + } + return do_rd_special(dc, true, a->rd, do_rdy); +} + +static TCGv do_rd_leon3_config(DisasContext *dc, TCGv dst) +{ + uint32_t val; + + /* + * TODO: There are many more fields to be filled, + * some of which are writable. + */ + val = dc->def->nwindows - 1; /* [4:0] NWIN */ + val |= 1 << 8; /* [8] V8 */ + + return tcg_constant_tl(val); +} + +TRANS(RDASR17, ASR17, do_rd_special, true, a->rd, do_rd_leon3_config) + +static TCGv do_rdccr(DisasContext *dc, TCGv dst) +{ + update_psr(dc); + gen_helper_rdccr(dst, tcg_env); + return dst; +} + +TRANS(RDCCR, 64, do_rd_special, true, a->rd, do_rdccr) + +static TCGv do_rdasi(DisasContext *dc, TCGv dst) +{ +#ifdef TARGET_SPARC64 + return tcg_constant_tl(dc->asi); +#else + qemu_build_not_reached(); +#endif +} + +TRANS(RDASI, 64, do_rd_special, true, a->rd, do_rdasi) + +static TCGv do_rdtick(DisasContext *dc, TCGv dst) +{ +#ifdef TARGET_SPARC64 + TCGv_ptr r_tickptr = tcg_temp_new_ptr(); + TCGv_i32 r_const = tcg_constant_i32(dc->mem_idx); + + tcg_gen_ld_ptr(r_tickptr, tcg_env, offsetof(CPUSPARCState, tick)); + if (translator_io_start(&dc->base)) { + dc->base.is_jmp = DISAS_EXIT; + } + gen_helper_tick_get_count(dst, tcg_env, r_tickptr, r_const); + return dst; +#else + qemu_build_not_reached(); +#endif +} + +/* TODO: non-priv access only allowed when enabled. */ +TRANS(RDTICK, 64, do_rd_special, true, a->rd, do_rdtick) + +static TCGv do_rdpc(DisasContext *dc, TCGv dst) +{ + target_ulong val = dc->pc; + if (AM_CHECK(dc)) { + val &= 0xffffffffULL; + } + return tcg_constant_tl(val); +} + +TRANS(RDPC, 64, do_rd_special, true, a->rd, do_rdpc) + +static TCGv do_rdfprs(DisasContext *dc, TCGv dst) +{ +#ifdef TARGET_SPARC64 + tcg_gen_ext_i32_tl(dst, cpu_fprs); + return dst; +#else + qemu_build_not_reached(); +#endif +} + +TRANS(RDFPRS, 64, do_rd_special, true, a->rd, do_rdfprs) + +static TCGv do_rdgsr(DisasContext *dc, TCGv dst) +{ +#ifdef TARGET_SPARC64 + gen_trap_ifnofpu(dc); + return cpu_gsr; +#else + qemu_build_not_reached(); +#endif +} + +TRANS(RDGSR, 64, do_rd_special, true, a->rd, do_rdgsr) + +static TCGv do_rdsoftint(DisasContext *dc, TCGv dst) +{ +#ifdef TARGET_SPARC64 + tcg_gen_ld32s_tl(dst, tcg_env, offsetof(CPUSPARCState, softint)); + return dst; +#else + qemu_build_not_reached(); +#endif +} + +TRANS(RDSOFTINT, 64, do_rd_special, supervisor(dc), a->rd, do_rdsoftint) + +static TCGv do_rdtick_cmpr(DisasContext *dc, TCGv dst) +{ +#ifdef TARGET_SPARC64 + return cpu_tick_cmpr; +#else + qemu_build_not_reached(); +#endif +} + +/* TODO: non-priv access only allowed when enabled. */ +TRANS(RDTICK_CMPR, 64, do_rd_special, true, a->rd, do_rdtick_cmpr) + +static TCGv do_rdstick(DisasContext *dc, TCGv dst) +{ +#ifdef TARGET_SPARC64 + TCGv_ptr r_tickptr = tcg_temp_new_ptr(); + TCGv_i32 r_const = tcg_constant_i32(dc->mem_idx); + + tcg_gen_ld_ptr(r_tickptr, tcg_env, offsetof(CPUSPARCState, stick)); + if (translator_io_start(&dc->base)) { + dc->base.is_jmp = DISAS_EXIT; + } + gen_helper_tick_get_count(dst, tcg_env, r_tickptr, r_const); + return dst; +#else + qemu_build_not_reached(); +#endif +} + +/* TODO: non-priv access only allowed when enabled. */ +TRANS(RDSTICK, 64, do_rd_special, true, a->rd, do_rdstick) + +static TCGv do_rdstick_cmpr(DisasContext *dc, TCGv dst) +{ +#ifdef TARGET_SPARC64 + return cpu_stick_cmpr; +#else + qemu_build_not_reached(); +#endif +} + +/* TODO: supervisor access only allowed when enabled by hypervisor. */ +TRANS(RDSTICK_CMPR, 64, do_rd_special, supervisor(dc), a->rd, do_rdstick_cmpr) + +/* + * UltraSPARC-T1 Strand status. + * HYPV check maybe not enough, UA2005 & UA2007 describe + * this ASR as impl. dep + */ +static TCGv do_rdstrand_status(DisasContext *dc, TCGv dst) +{ + return tcg_constant_tl(1); +} + +TRANS(RDSTRAND_STATUS, HYPV, do_rd_special, true, a->rd, do_rdstrand_status) + #define CHECK_IU_FEATURE(dc, FEATURE) \ if (!((dc)->def->features & CPU_FEATURE_ ## FEATURE)) \ goto illegal_insn; @@ -3108,134 +3329,12 @@ static void disas_sparc_legacy(DisasContext *dc, unsigned int insn) g_assert_not_reached(); /* in decodetree */ case 2: /* FPU & Logical Operations */ { - unsigned int xop = GET_FIELD(insn, 7, 12); - TCGv cpu_dst = tcg_temp_new(); - TCGv cpu_tmp0; + unsigned int xop __attribute__((unused)) = GET_FIELD(insn, 7, 12); + TCGv cpu_dst __attribute__((unused)) = tcg_temp_new(); + TCGv cpu_tmp0 __attribute__((unused)); - if (xop == 0x28) { - rs1 = GET_FIELD(insn, 13, 17); - switch(rs1) { - case 0: /* rdy */ -#ifndef TARGET_SPARC64 - case 0x01 ... 0x0e: /* undefined in the SPARCv8 - manual, rdy on the microSPARC - II */ - case 0x0f: /* stbar in the SPARCv8 manual, - rdy on the microSPARC II */ - case 0x10 ... 0x1f: /* implementation-dependent in the - SPARCv8 manual, rdy on the - microSPARC II */ - /* Read Asr17 */ - if (rs1 == 0x11 && dc->def->features & CPU_FEATURE_ASR17) { - TCGv t = gen_dest_gpr(dc, rd); - /* Read Asr17 for a Leon3 monoprocessor */ - tcg_gen_movi_tl(t, (1 << 8) | (dc->def->nwindows - 1)); - gen_store_gpr(dc, rd, t); - break; - } -#endif - gen_store_gpr(dc, rd, cpu_y); - break; -#ifdef TARGET_SPARC64 - case 0x2: /* V9 rdccr */ - update_psr(dc); - gen_helper_rdccr(cpu_dst, tcg_env); - gen_store_gpr(dc, rd, cpu_dst); - break; - case 0x3: /* V9 rdasi */ - tcg_gen_movi_tl(cpu_dst, dc->asi); - gen_store_gpr(dc, rd, cpu_dst); - break; - case 0x4: /* V9 rdtick */ - { - TCGv_ptr r_tickptr; - TCGv_i32 r_const; - - r_tickptr = tcg_temp_new_ptr(); - r_const = tcg_constant_i32(dc->mem_idx); - tcg_gen_ld_ptr(r_tickptr, tcg_env, - offsetof(CPUSPARCState, tick)); - if (translator_io_start(&dc->base)) { - dc->base.is_jmp = DISAS_EXIT; - } - gen_helper_tick_get_count(cpu_dst, tcg_env, r_tickptr, - r_const); - gen_store_gpr(dc, rd, cpu_dst); - } - break; - case 0x5: /* V9 rdpc */ - { - TCGv t = gen_dest_gpr(dc, rd); - if (unlikely(AM_CHECK(dc))) { - tcg_gen_movi_tl(t, dc->pc & 0xffffffffULL); - } else { - tcg_gen_movi_tl(t, dc->pc); - } - gen_store_gpr(dc, rd, t); - } - break; - case 0x6: /* V9 rdfprs */ - tcg_gen_ext_i32_tl(cpu_dst, cpu_fprs); - gen_store_gpr(dc, rd, cpu_dst); - break; - case 0xf: /* V9 membar */ - break; /* no effect */ - case 0x13: /* Graphics Status */ - if (gen_trap_ifnofpu(dc)) { - goto jmp_insn; - } - gen_store_gpr(dc, rd, cpu_gsr); - break; - case 0x16: /* Softint */ - tcg_gen_ld32s_tl(cpu_dst, tcg_env, - offsetof(CPUSPARCState, softint)); - gen_store_gpr(dc, rd, cpu_dst); - break; - case 0x17: /* Tick compare */ - gen_store_gpr(dc, rd, cpu_tick_cmpr); - break; - case 0x18: /* System tick */ - { - TCGv_ptr r_tickptr; - TCGv_i32 r_const; - - r_tickptr = tcg_temp_new_ptr(); - r_const = tcg_constant_i32(dc->mem_idx); - tcg_gen_ld_ptr(r_tickptr, tcg_env, - offsetof(CPUSPARCState, stick)); - if (translator_io_start(&dc->base)) { - dc->base.is_jmp = DISAS_EXIT; - } - gen_helper_tick_get_count(cpu_dst, tcg_env, r_tickptr, - r_const); - gen_store_gpr(dc, rd, cpu_dst); - } - break; - case 0x19: /* System tick compare */ - gen_store_gpr(dc, rd, cpu_stick_cmpr); - break; - case 0x1a: /* UltraSPARC-T1 Strand status */ - /* XXX HYPV check maybe not enough, UA2005 & UA2007 describe - * this ASR as impl. dep - */ - CHECK_IU_FEATURE(dc, HYPV); - { - TCGv t = gen_dest_gpr(dc, rd); - tcg_gen_movi_tl(t, 1UL); - gen_store_gpr(dc, rd, t); - } - break; - case 0x10: /* Performance Control */ - case 0x11: /* Performance Instrumentation Counter */ - case 0x12: /* Dispatch Control */ - case 0x14: /* Softint set, WO */ - case 0x15: /* Softint clear, WO */ -#endif - default: - goto illegal_insn; - } #if !defined(CONFIG_USER_ONLY) - } else if (xop == 0x29) { /* rdpsr / UA2005 rdhpr */ + if (xop == 0x29) { /* rdpsr / UA2005 rdhpr */ #ifndef TARGET_SPARC64 if (!supervisor(dc)) { goto priv_insn; @@ -3273,7 +3372,8 @@ static void disas_sparc_legacy(DisasContext *dc, unsigned int insn) #endif gen_store_gpr(dc, rd, cpu_dst); break; - } else if (xop == 0x2a) { /* rdwim / V9 rdpr */ + } + if (xop == 0x2a) { /* rdwim / V9 rdpr */ if (!supervisor(dc)) { goto priv_insn; } @@ -3397,9 +3497,10 @@ static void disas_sparc_legacy(DisasContext *dc, unsigned int insn) #endif gen_store_gpr(dc, rd, cpu_tmp0); break; + } #endif #if defined(TARGET_SPARC64) || !defined(CONFIG_USER_ONLY) - } else if (xop == 0x2b) { /* rdtbr / V9 flushw */ + if (xop == 0x2b) { /* rdtbr / V9 flushw */ #ifdef TARGET_SPARC64 gen_helper_flushw(tcg_env); #else @@ -3408,8 +3509,9 @@ static void disas_sparc_legacy(DisasContext *dc, unsigned int insn) gen_store_gpr(dc, rd, cpu_tbr); #endif break; + } #endif - } else if (xop == 0x34) { /* FPU Operations */ + if (xop == 0x34) { /* FPU Operations */ if (gen_trap_ifnofpu(dc)) { goto jmp_insn; }