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([71.212.149.95]) by smtp.gmail.com with ESMTPSA id m10-20020a056a00080a00b00690ca4356f1sm579280pfk.198.2023.10.16.23.16.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 16 Oct 2023 23:16:30 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: mark.cave-ayland@ilande.co.uk Subject: [PATCH v2 55/90] target/sparc: Move simple fp load/store to decodetree Date: Mon, 16 Oct 2023 23:12:09 -0700 Message-Id: <20231017061244.681584-56-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231017061244.681584-1-richard.henderson@linaro.org> References: <20231017061244.681584-1-richard.henderson@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::c32; envelope-from=richard.henderson@linaro.org; helo=mail-oo1-xc32.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 | 19 ++++ target/sparc/translate.c | 194 ++++++++++++++++++-------------------- 2 files changed, 113 insertions(+), 100 deletions(-) diff --git a/target/sparc/insns.decode b/target/sparc/insns.decode index 86108679eb..ab311055da 100644 --- a/target/sparc/insns.decode +++ b/target/sparc/insns.decode @@ -231,8 +231,16 @@ NCP 10 ----- 110111 ----- --------- ----- # v8 CPop2 ## Major Opcode 11 -- load and store instructions ## +%dfp_rd 25:5 !function=extract_dfpreg +%qfp_rd 25:5 !function=extract_qfpreg + &r_r_ri_asi rd rs1 rs2_or_imm asi imm:bool @r_r_ri_na .. rd:5 ...... rs1:5 imm:1 rs2_or_imm:s13 &r_r_ri_asi asi=-1 +@d_r_ri_na .. ..... ...... rs1:5 imm:1 rs2_or_imm:s13 \ + &r_r_ri_asi rd=%dfp_rd asi=-1 +@q_r_ri_na .. ..... ...... rs1:5 imm:1 rs2_or_imm:s13 \ + &r_r_ri_asi rd=%qfp_rd asi=-1 + @r_r_r_asi .. rd:5 ...... rs1:5 0 asi:8 rs2_or_imm:5 &r_r_ri_asi imm=0 @r_r_i_asi .. rd:5 ...... rs1:5 1 rs2_or_imm:s13 \ &r_r_ri_asi imm=1 asi=-2 @@ -282,6 +290,17 @@ STD 11 ..... 010111 ..... . ............. @r_r_i_asi # STDA STX 11 ..... 011110 ..... . ............. @r_r_r_asi # STXA STX 11 ..... 011110 ..... . ............. @r_r_i_asi # STXA +LDF 11 ..... 100000 ..... . ............. @r_r_ri_na +LDQF 11 ..... 100010 ..... . ............. @q_r_ri_na +LDDF 11 ..... 100011 ..... . ............. @d_r_ri_na + +STF 11 ..... 100100 ..... . ............. @r_r_ri_na +{ + STQF 11 ..... 100110 ..... . ............. @q_r_ri_na + STDFQ 11 ----- 100110 ----- - ------------- +} +STDF 11 ..... 100111 ..... . ............. @d_r_ri_na + LDSTUB 11 ..... 001101 ..... . ............. @r_r_ri_na LDSTUB 11 ..... 011101 ..... . ............. @r_r_r_asi # LDSTUBA LDSTUB 11 ..... 011101 ..... . ............. @r_r_i_asi # LDSTUBA diff --git a/target/sparc/translate.c b/target/sparc/translate.c index 822e74fa3e..eeec1e751c 100644 --- a/target/sparc/translate.c +++ b/target/sparc/translate.c @@ -253,29 +253,7 @@ static void gen_op_store_QT0_fpr(unsigned int dst) offsetof(CPU_QuadU, ll.lower)); } -static void gen_store_fpr_Q(DisasContext *dc, unsigned int dst, - TCGv_i64 v1, TCGv_i64 v2) -{ - dst = QFPREG(dst); - - tcg_gen_mov_i64(cpu_fpr[dst / 2], v1); - tcg_gen_mov_i64(cpu_fpr[dst / 2 + 1], v2); - gen_update_fprs_dirty(dc, dst); -} - #ifdef TARGET_SPARC64 -static TCGv_i64 gen_load_fpr_Q0(DisasContext *dc, unsigned int src) -{ - src = QFPREG(src); - return cpu_fpr[src / 2]; -} - -static TCGv_i64 gen_load_fpr_Q1(DisasContext *dc, unsigned int src) -{ - src = QFPREG(src); - return cpu_fpr[src / 2 + 1]; -} - static void gen_move_Q(DisasContext *dc, unsigned int rd, unsigned int rs) { rd = QFPREG(rd); @@ -2841,6 +2819,16 @@ static void gen_faligndata(TCGv dst, TCGv gsr, TCGv s1, TCGv s2) } #endif +static int extract_dfpreg(DisasContext *dc, int x) +{ + return DFPREG(x); +} + +static int extract_qfpreg(DisasContext *dc, int x) +{ + return QFPREG(x); +} + /* Include the auto-generated decoder. */ #include "decode-insns.c.inc" @@ -2969,6 +2957,20 @@ static bool raise_priv(DisasContext *dc) return true; } +static bool raise_unimpfpop(DisasContext *dc) +{ + gen_op_fpexception_im(dc, FSR_FTT_UNIMPFPOP); + return true; +} + +static bool gen_trap_float128(DisasContext *dc) +{ + if (dc->def->features & CPU_FEATURE_FLOAT128) { + return false; + } + return raise_unimpfpop(dc); +} + static bool do_bpcc(DisasContext *dc, arg_bcc *a) { target_long target = dc->pc + a->i * 4; @@ -4721,6 +4723,68 @@ static bool do_casa(DisasContext *dc, arg_r_r_ri_asi *a, MemOp mop) TRANS(CASA, CASA, do_casa, a, MO_TEUL) TRANS(CASXA, 64, do_casa, a, MO_TEUQ) +static bool do_ld_fpr(DisasContext *dc, arg_r_r_ri_asi *a, MemOp mop) +{ + TCGv addr = gen_ldst_addr(dc, a->rs1, a->imm, a->rs2_or_imm); + DisasASI da; + + if (addr == NULL) { + return false; + } + if (gen_trap_ifnofpu(dc)) { + return true; + } + if ((mop & MO_SIZE) == MO_128 && gen_trap_float128(dc)) { + return true; + } + da = resolve_asi(dc, a->asi, mop); + gen_ldf_asi0(dc, &da, addr, a->rd); + gen_update_fprs_dirty(dc, a->rd); + return advance_pc(dc); +} + +TRANS(LDF, ALL, do_ld_fpr, a, MO_TEUL) +TRANS(LDDF, ALL, do_ld_fpr, a, MO_TEUQ) +TRANS(LDQF, ALL, do_ld_fpr, a, MO_TE | MO_128) + +static bool do_st_fpr(DisasContext *dc, arg_r_r_ri_asi *a, MemOp mop) +{ + TCGv addr = gen_ldst_addr(dc, a->rs1, a->imm, a->rs2_or_imm); + DisasASI da; + + if (addr == NULL) { + return false; + } + if (gen_trap_ifnofpu(dc)) { + return true; + } + if ((mop & MO_SIZE) == MO_128 && gen_trap_float128(dc)) { + return true; + } + da = resolve_asi(dc, a->asi, mop); + gen_stf_asi0(dc, &da, addr, a->rd); + return advance_pc(dc); +} + +TRANS(STF, ALL, do_st_fpr, a, MO_TEUL) +TRANS(STDF, ALL, do_st_fpr, a, MO_TEUQ) +TRANS(STQF, ALL, do_st_fpr, a, MO_TE | MO_128) + +static bool trans_STDFQ(DisasContext *dc, arg_STDFQ *a) +{ + if (!avail_32(dc)) { + return false; + } + if (!supervisor(dc)) { + return raise_priv(dc); + } + if (gen_trap_ifnofpu(dc)) { + return true; + } + gen_op_fpexception_im(dc, FSR_FTT_SEQ_ERROR); + return true; +} + #define CHECK_IU_FEATURE(dc, FEATURE) \ if (!((dc)->def->features & CPU_FEATURE_ ## FEATURE)) \ goto illegal_insn; @@ -4735,7 +4799,8 @@ static void disas_sparc_legacy(DisasContext *dc, unsigned int insn) TCGv cpu_src1 __attribute__((unused)); TCGv cpu_src2 __attribute__((unused)); TCGv_i32 cpu_src1_32, cpu_src2_32, cpu_dst_32; - TCGv_i64 cpu_src1_64, cpu_src2_64, cpu_dst_64; + TCGv_i64 cpu_src1_64, cpu_src2_64; + TCGv_i64 cpu_dst_64 __attribute__((unused)); target_long simm; opc = GET_FIELD(insn, 0, 1); @@ -5602,12 +5667,9 @@ static void disas_sparc_legacy(DisasContext *dc, unsigned int insn) } switch (xop) { case 0x20: /* ldf, load fpreg */ - gen_address_mask(dc, cpu_addr); - cpu_dst_32 = gen_dest_fpr_F(dc); - tcg_gen_qemu_ld_i32(cpu_dst_32, cpu_addr, - dc->mem_idx, MO_TEUL | MO_ALIGN); - gen_store_fpr_F(dc, rd, cpu_dst_32); - break; + case 0x22: /* ldqf, load quad fpreg */ + case 0x23: /* lddf, load double fpreg */ + g_assert_not_reached(); /* in decodetree */ case 0x21: /* ldfsr, V9 ldxfsr */ #ifdef TARGET_SPARC64 gen_address_mask(dc, cpu_addr); @@ -5624,25 +5686,6 @@ static void disas_sparc_legacy(DisasContext *dc, unsigned int insn) dc->mem_idx, MO_TEUL | MO_ALIGN); gen_helper_ldfsr(cpu_fsr, tcg_env, cpu_fsr, cpu_dst_32); break; - case 0x22: /* ldqf, load quad fpreg */ - CHECK_FPU_FEATURE(dc, FLOAT128); - gen_address_mask(dc, cpu_addr); - cpu_src1_64 = tcg_temp_new_i64(); - tcg_gen_qemu_ld_i64(cpu_src1_64, cpu_addr, dc->mem_idx, - MO_TEUQ | MO_ALIGN_4); - tcg_gen_addi_tl(cpu_addr, cpu_addr, 8); - cpu_src2_64 = tcg_temp_new_i64(); - tcg_gen_qemu_ld_i64(cpu_src2_64, cpu_addr, dc->mem_idx, - MO_TEUQ | MO_ALIGN_4); - gen_store_fpr_Q(dc, rd, cpu_src1_64, cpu_src2_64); - break; - case 0x23: /* lddf, load double fpreg */ - gen_address_mask(dc, cpu_addr); - cpu_dst_64 = gen_dest_fpr_D(dc, rd); - tcg_gen_qemu_ld_i64(cpu_dst_64, cpu_addr, dc->mem_idx, - MO_TEUQ | MO_ALIGN_4); - gen_store_fpr_D(dc, rd, cpu_dst_64); - break; default: goto illegal_insn; } @@ -5652,11 +5695,9 @@ static void disas_sparc_legacy(DisasContext *dc, unsigned int insn) } switch (xop) { case 0x24: /* stf, store fpreg */ - gen_address_mask(dc, cpu_addr); - cpu_src1_32 = gen_load_fpr_F(dc, rd); - tcg_gen_qemu_st_i32(cpu_src1_32, cpu_addr, - dc->mem_idx, MO_TEUL | MO_ALIGN); - break; + case 0x26: /* v9 stqf, v8 stdfq */ + case 0x27: /* stdf, store double fpreg */ + g_assert_not_reached(); case 0x25: /* stfsr, V9 stxfsr */ { #ifdef TARGET_SPARC64 @@ -5671,43 +5712,6 @@ static void disas_sparc_legacy(DisasContext *dc, unsigned int insn) dc->mem_idx, MO_TEUL | MO_ALIGN); } break; - case 0x26: -#ifdef TARGET_SPARC64 - /* V9 stqf, store quad fpreg */ - CHECK_FPU_FEATURE(dc, FLOAT128); - gen_address_mask(dc, cpu_addr); - /* ??? While stqf only requires 4-byte alignment, it is - legal for the cpu to signal the unaligned exception. - The OS trap handler is then required to fix it up. - For qemu, this avoids having to probe the second page - before performing the first write. */ - cpu_src1_64 = gen_load_fpr_Q0(dc, rd); - tcg_gen_qemu_st_i64(cpu_src1_64, cpu_addr, - dc->mem_idx, MO_TEUQ | MO_ALIGN_16); - tcg_gen_addi_tl(cpu_addr, cpu_addr, 8); - cpu_src2_64 = gen_load_fpr_Q1(dc, rd); - tcg_gen_qemu_st_i64(cpu_src1_64, cpu_addr, - dc->mem_idx, MO_TEUQ); - break; -#else /* !TARGET_SPARC64 */ - /* stdfq, store floating point queue */ -#if defined(CONFIG_USER_ONLY) - goto illegal_insn; -#else - if (!supervisor(dc)) - goto priv_insn; - if (gen_trap_ifnofpu(dc)) { - goto jmp_insn; - } - goto nfq_insn; -#endif -#endif - case 0x27: /* stdf, store double fpreg */ - gen_address_mask(dc, cpu_addr); - cpu_src1_64 = gen_load_fpr_D(dc, rd); - tcg_gen_qemu_st_i64(cpu_src1_64, cpu_addr, dc->mem_idx, - MO_TEUQ | MO_ALIGN_4); - break; default: goto illegal_insn; } @@ -5754,19 +5758,9 @@ static void disas_sparc_legacy(DisasContext *dc, unsigned int insn) illegal_insn: gen_exception(dc, TT_ILL_INSN); return; -#if !defined(CONFIG_USER_ONLY) && !defined(TARGET_SPARC64) - priv_insn: - gen_exception(dc, TT_PRIV_INSN); - return; -#endif nfpu_insn: gen_op_fpexception_im(dc, FSR_FTT_UNIMPFPOP); return; -#if !defined(CONFIG_USER_ONLY) && !defined(TARGET_SPARC64) - nfq_insn: - gen_op_fpexception_im(dc, FSR_FTT_SEQ_ERROR); - return; -#endif } static void sparc_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cs)