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[2001:8b0:1d0::2]) by smtp.gmail.com with ESMTPSA id m9-20020a056000008900b0030ae499da59sm9923022wrx.111.2023.06.11.09.00.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 11 Jun 2023 09:00:41 -0700 (PDT) From: Peter Maydell To: qemu-arm@nongnu.org, qemu-devel@nongnu.org Subject: [PATCH v2 15/23] target/arm: Convert ld/st reg+imm9 insns to decodetree Date: Sun, 11 Jun 2023 17:00:24 +0100 Message-Id: <20230611160032.274823-16-peter.maydell@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230611160032.274823-1-peter.maydell@linaro.org> References: <20230611160032.274823-1-peter.maydell@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::42d; envelope-from=peter.maydell@linaro.org; helo=mail-wr1-x42d.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, T_SCC_BODY_TEXT_LINE=-0.01 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 Convert the load and store instructions which use a 9-bit immediate offset to decodetree. Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson Message-id: 20230602155223.2040685-13-peter.maydell@linaro.org --- target/arm/tcg/a64.decode | 69 +++++++++++ target/arm/tcg/translate-a64.c | 206 ++++++++++++++------------------- 2 files changed, 153 insertions(+), 122 deletions(-) diff --git a/target/arm/tcg/a64.decode b/target/arm/tcg/a64.decode index f5787919931..d55c09684a7 100644 --- a/target/arm/tcg/a64.decode +++ b/target/arm/tcg/a64.decode @@ -326,3 +326,72 @@ LDP_v 10 101 1 011 1 ....... ..... ..... ..... @ldstpair sz=4 sign=0 p STGP 01 101 0 001 0 ....... ..... ..... ..... @ldstpair sz=3 sign=0 p=1 w=1 STGP 01 101 0 010 0 ....... ..... ..... ..... @ldstpair sz=3 sign=0 p=0 w=0 STGP 01 101 0 011 0 ....... ..... ..... ..... @ldstpair sz=3 sign=0 p=0 w=1 + +# Load/store register (unscaled immediate) +&ldst_imm rt rn imm sz sign w p unpriv ext +@ldst_imm .. ... . .. .. . imm:s9 .. rn:5 rt:5 &ldst_imm unpriv=0 p=0 w=0 +@ldst_imm_pre .. ... . .. .. . imm:s9 .. rn:5 rt:5 &ldst_imm unpriv=0 p=0 w=1 +@ldst_imm_post .. ... . .. .. . imm:s9 .. rn:5 rt:5 &ldst_imm unpriv=0 p=1 w=1 +@ldst_imm_user .. ... . .. .. . imm:s9 .. rn:5 rt:5 &ldst_imm unpriv=1 p=0 w=0 + +STR_i sz:2 111 0 00 00 0 ......... 00 ..... ..... @ldst_imm sign=0 ext=0 +LDR_i 00 111 0 00 01 0 ......... 00 ..... ..... @ldst_imm sign=0 ext=1 sz=0 +LDR_i 01 111 0 00 01 0 ......... 00 ..... ..... @ldst_imm sign=0 ext=1 sz=1 +LDR_i 10 111 0 00 01 0 ......... 00 ..... ..... @ldst_imm sign=0 ext=1 sz=2 +LDR_i 11 111 0 00 01 0 ......... 00 ..... ..... @ldst_imm sign=0 ext=0 sz=3 +LDR_i 00 111 0 00 10 0 ......... 00 ..... ..... @ldst_imm sign=1 ext=0 sz=0 +LDR_i 01 111 0 00 10 0 ......... 00 ..... ..... @ldst_imm sign=1 ext=0 sz=1 +LDR_i 10 111 0 00 10 0 ......... 00 ..... ..... @ldst_imm sign=1 ext=0 sz=2 +LDR_i 00 111 0 00 11 0 ......... 00 ..... ..... @ldst_imm sign=1 ext=1 sz=0 +LDR_i 01 111 0 00 11 0 ......... 00 ..... ..... @ldst_imm sign=1 ext=1 sz=1 + +STR_i sz:2 111 0 00 00 0 ......... 01 ..... ..... @ldst_imm_post sign=0 ext=0 +LDR_i 00 111 0 00 01 0 ......... 01 ..... ..... @ldst_imm_post sign=0 ext=1 sz=0 +LDR_i 01 111 0 00 01 0 ......... 01 ..... ..... @ldst_imm_post sign=0 ext=1 sz=1 +LDR_i 10 111 0 00 01 0 ......... 01 ..... ..... @ldst_imm_post sign=0 ext=1 sz=2 +LDR_i 11 111 0 00 01 0 ......... 01 ..... ..... @ldst_imm_post sign=0 ext=0 sz=3 +LDR_i 00 111 0 00 10 0 ......... 01 ..... ..... @ldst_imm_post sign=1 ext=0 sz=0 +LDR_i 01 111 0 00 10 0 ......... 01 ..... ..... @ldst_imm_post sign=1 ext=0 sz=1 +LDR_i 10 111 0 00 10 0 ......... 01 ..... ..... @ldst_imm_post sign=1 ext=0 sz=2 +LDR_i 00 111 0 00 11 0 ......... 01 ..... ..... @ldst_imm_post sign=1 ext=1 sz=0 +LDR_i 01 111 0 00 11 0 ......... 01 ..... ..... @ldst_imm_post sign=1 ext=1 sz=1 + +STR_i sz:2 111 0 00 00 0 ......... 10 ..... ..... @ldst_imm_user sign=0 ext=0 +LDR_i 00 111 0 00 01 0 ......... 10 ..... ..... @ldst_imm_user sign=0 ext=1 sz=0 +LDR_i 01 111 0 00 01 0 ......... 10 ..... ..... @ldst_imm_user sign=0 ext=1 sz=1 +LDR_i 10 111 0 00 01 0 ......... 10 ..... ..... @ldst_imm_user sign=0 ext=1 sz=2 +LDR_i 11 111 0 00 01 0 ......... 10 ..... ..... @ldst_imm_user sign=0 ext=0 sz=3 +LDR_i 00 111 0 00 10 0 ......... 10 ..... ..... @ldst_imm_user sign=1 ext=0 sz=0 +LDR_i 01 111 0 00 10 0 ......... 10 ..... ..... @ldst_imm_user sign=1 ext=0 sz=1 +LDR_i 10 111 0 00 10 0 ......... 10 ..... ..... @ldst_imm_user sign=1 ext=0 sz=2 +LDR_i 00 111 0 00 11 0 ......... 10 ..... ..... @ldst_imm_user sign=1 ext=1 sz=0 +LDR_i 01 111 0 00 11 0 ......... 10 ..... ..... @ldst_imm_user sign=1 ext=1 sz=1 + +STR_i sz:2 111 0 00 00 0 ......... 11 ..... ..... @ldst_imm_pre sign=0 ext=0 +LDR_i 00 111 0 00 01 0 ......... 11 ..... ..... @ldst_imm_pre sign=0 ext=1 sz=0 +LDR_i 01 111 0 00 01 0 ......... 11 ..... ..... @ldst_imm_pre sign=0 ext=1 sz=1 +LDR_i 10 111 0 00 01 0 ......... 11 ..... ..... @ldst_imm_pre sign=0 ext=1 sz=2 +LDR_i 11 111 0 00 01 0 ......... 11 ..... ..... @ldst_imm_pre sign=0 ext=0 sz=3 +LDR_i 00 111 0 00 10 0 ......... 11 ..... ..... @ldst_imm_pre sign=1 ext=0 sz=0 +LDR_i 01 111 0 00 10 0 ......... 11 ..... ..... @ldst_imm_pre sign=1 ext=0 sz=1 +LDR_i 10 111 0 00 10 0 ......... 11 ..... ..... @ldst_imm_pre sign=1 ext=0 sz=2 +LDR_i 00 111 0 00 11 0 ......... 11 ..... ..... @ldst_imm_pre sign=1 ext=1 sz=0 +LDR_i 01 111 0 00 11 0 ......... 11 ..... ..... @ldst_imm_pre sign=1 ext=1 sz=1 + +# PRFM : prefetch memory: a no-op for QEMU +NOP 11 111 0 00 10 0 --------- 00 ----- ----- + +STR_v_i sz:2 111 1 00 00 0 ......... 00 ..... ..... @ldst_imm sign=0 ext=0 +STR_v_i 00 111 1 00 10 0 ......... 00 ..... ..... @ldst_imm sign=0 ext=0 sz=4 +LDR_v_i sz:2 111 1 00 01 0 ......... 00 ..... ..... @ldst_imm sign=0 ext=0 +LDR_v_i 00 111 1 00 11 0 ......... 00 ..... ..... @ldst_imm sign=0 ext=0 sz=4 + +STR_v_i sz:2 111 1 00 00 0 ......... 01 ..... ..... @ldst_imm_post sign=0 ext=0 +STR_v_i 00 111 1 00 10 0 ......... 01 ..... ..... @ldst_imm_post sign=0 ext=0 sz=4 +LDR_v_i sz:2 111 1 00 01 0 ......... 01 ..... ..... @ldst_imm_post sign=0 ext=0 +LDR_v_i 00 111 1 00 11 0 ......... 01 ..... ..... @ldst_imm_post sign=0 ext=0 sz=4 + +STR_v_i sz:2 111 1 00 00 0 ......... 11 ..... ..... @ldst_imm_pre sign=0 ext=0 +STR_v_i 00 111 1 00 10 0 ......... 11 ..... ..... @ldst_imm_pre sign=0 ext=0 sz=4 +LDR_v_i sz:2 111 1 00 01 0 ......... 11 ..... ..... @ldst_imm_pre sign=0 ext=0 +LDR_v_i 00 111 1 00 11 0 ......... 11 ..... ..... @ldst_imm_pre sign=0 ext=0 sz=4 diff --git a/target/arm/tcg/translate-a64.c b/target/arm/tcg/translate-a64.c index 8b8c9939013..4cabdadde41 100644 --- a/target/arm/tcg/translate-a64.c +++ b/target/arm/tcg/translate-a64.c @@ -3040,134 +3040,101 @@ static bool trans_STGP(DisasContext *s, arg_ldstpair *a) return true; } -/* - * Load/store (immediate post-indexed) - * Load/store (immediate pre-indexed) - * Load/store (unscaled immediate) - * - * 31 30 29 27 26 25 24 23 22 21 20 12 11 10 9 5 4 0 - * +----+-------+---+-----+-----+---+--------+-----+------+------+ - * |size| 1 1 1 | V | 0 0 | opc | 0 | imm9 | idx | Rn | Rt | - * +----+-------+---+-----+-----+---+--------+-----+------+------+ - * - * idx = 01 -> post-indexed, 11 pre-indexed, 00 unscaled imm. (no writeback) - 10 -> unprivileged - * V = 0 -> non-vector - * size: 00 -> 8 bit, 01 -> 16 bit, 10 -> 32 bit, 11 -> 64bit - * opc: 00 -> store, 01 -> loadu, 10 -> loads 64, 11 -> loads 32 - */ -static void disas_ldst_reg_imm9(DisasContext *s, uint32_t insn, - int opc, - int size, - int rt, - bool is_vector) +static void op_addr_ldst_imm_pre(DisasContext *s, arg_ldst_imm *a, + TCGv_i64 *clean_addr, TCGv_i64 *dirty_addr, + uint64_t offset, bool is_store, MemOp mop) { - int rn = extract32(insn, 5, 5); - int imm9 = sextract32(insn, 12, 9); - int idx = extract32(insn, 10, 2); - bool is_signed = false; - bool is_store = false; - bool is_extended = false; - bool is_unpriv = (idx == 2); - bool iss_valid; - bool post_index; - bool writeback; int memidx; - MemOp memop; - TCGv_i64 clean_addr, dirty_addr; - if (is_vector) { - size |= (opc & 2) << 1; - if (size > 4 || is_unpriv) { - unallocated_encoding(s); - return; - } - is_store = ((opc & 1) == 0); - if (!fp_access_check(s)) { - return; - } - memop = finalize_memop_asimd(s, size); - } else { - if (size == 3 && opc == 2) { - /* PRFM - prefetch */ - if (idx != 0) { - unallocated_encoding(s); - return; - } - return; - } - if (opc == 3 && size > 1) { - unallocated_encoding(s); - return; - } - is_store = (opc == 0); - is_signed = !is_store && extract32(opc, 1, 1); - is_extended = (size < 3) && extract32(opc, 0, 1); - memop = finalize_memop(s, size + is_signed * MO_SIGN); - } - - switch (idx) { - case 0: - case 2: - post_index = false; - writeback = false; - break; - case 1: - post_index = true; - writeback = true; - break; - case 3: - post_index = false; - writeback = true; - break; - default: - g_assert_not_reached(); - } - - iss_valid = !is_vector && !writeback; - - if (rn == 31) { + if (a->rn == 31) { gen_check_sp_alignment(s); } - dirty_addr = read_cpu_reg_sp(s, rn, 1); - if (!post_index) { - tcg_gen_addi_i64(dirty_addr, dirty_addr, imm9); + *dirty_addr = read_cpu_reg_sp(s, a->rn, 1); + if (!a->p) { + tcg_gen_addi_i64(*dirty_addr, *dirty_addr, offset); } + memidx = a->unpriv ? get_a64_user_mem_index(s) : get_mem_index(s); + *clean_addr = gen_mte_check1_mmuidx(s, *dirty_addr, is_store, + a->w || a->rn != 31, + mop, a->unpriv, memidx); +} - memidx = is_unpriv ? get_a64_user_mem_index(s) : get_mem_index(s); - - clean_addr = gen_mte_check1_mmuidx(s, dirty_addr, is_store, - writeback || rn != 31, - memop, is_unpriv, memidx); - - if (is_vector) { - if (is_store) { - do_fp_st(s, rt, clean_addr, memop); - } else { - do_fp_ld(s, rt, clean_addr, memop); - } - } else { - TCGv_i64 tcg_rt = cpu_reg(s, rt); - bool iss_sf = disas_ldst_compute_iss_sf(size, is_signed, opc); - - if (is_store) { - do_gpr_st_memidx(s, tcg_rt, clean_addr, memop, memidx, - iss_valid, rt, iss_sf, false); - } else { - do_gpr_ld_memidx(s, tcg_rt, clean_addr, memop, - is_extended, memidx, - iss_valid, rt, iss_sf, false); +static void op_addr_ldst_imm_post(DisasContext *s, arg_ldst_imm *a, + TCGv_i64 dirty_addr, uint64_t offset) +{ + if (a->w) { + if (a->p) { + tcg_gen_addi_i64(dirty_addr, dirty_addr, offset); } + tcg_gen_mov_i64(cpu_reg_sp(s, a->rn), dirty_addr); } +} - if (writeback) { - TCGv_i64 tcg_rn = cpu_reg_sp(s, rn); - if (post_index) { - tcg_gen_addi_i64(dirty_addr, dirty_addr, imm9); - } - tcg_gen_mov_i64(tcg_rn, dirty_addr); +static bool trans_STR_i(DisasContext *s, arg_ldst_imm *a) +{ + bool iss_sf, iss_valid = !a->w; + TCGv_i64 clean_addr, dirty_addr, tcg_rt; + int memidx = a->unpriv ? get_a64_user_mem_index(s) : get_mem_index(s); + MemOp mop = finalize_memop(s, a->sz + a->sign * MO_SIGN); + + op_addr_ldst_imm_pre(s, a, &clean_addr, &dirty_addr, a->imm, true, mop); + + tcg_rt = cpu_reg(s, a->rt); + iss_sf = ldst_iss_sf(a->sz, a->sign, a->ext); + + do_gpr_st_memidx(s, tcg_rt, clean_addr, mop, memidx, + iss_valid, a->rt, iss_sf, false); + op_addr_ldst_imm_post(s, a, dirty_addr, a->imm); + return true; +} + +static bool trans_LDR_i(DisasContext *s, arg_ldst_imm *a) +{ + bool iss_sf, iss_valid = !a->w; + TCGv_i64 clean_addr, dirty_addr, tcg_rt; + int memidx = a->unpriv ? get_a64_user_mem_index(s) : get_mem_index(s); + MemOp mop = finalize_memop(s, a->sz + a->sign * MO_SIGN); + + op_addr_ldst_imm_pre(s, a, &clean_addr, &dirty_addr, a->imm, false, mop); + + tcg_rt = cpu_reg(s, a->rt); + iss_sf = ldst_iss_sf(a->sz, a->sign, a->ext); + + do_gpr_ld_memidx(s, tcg_rt, clean_addr, mop, + a->ext, memidx, iss_valid, a->rt, iss_sf, false); + op_addr_ldst_imm_post(s, a, dirty_addr, a->imm); + return true; +} + +static bool trans_STR_v_i(DisasContext *s, arg_ldst_imm *a) +{ + TCGv_i64 clean_addr, dirty_addr; + MemOp mop; + + if (!fp_access_check(s)) { + return true; } + mop = finalize_memop_asimd(s, a->sz); + op_addr_ldst_imm_pre(s, a, &clean_addr, &dirty_addr, a->imm, true, mop); + do_fp_st(s, a->rt, clean_addr, mop); + op_addr_ldst_imm_post(s, a, dirty_addr, a->imm); + return true; +} + +static bool trans_LDR_v_i(DisasContext *s, arg_ldst_imm *a) +{ + TCGv_i64 clean_addr, dirty_addr; + MemOp mop; + + if (!fp_access_check(s)) { + return true; + } + mop = finalize_memop_asimd(s, a->sz); + op_addr_ldst_imm_pre(s, a, &clean_addr, &dirty_addr, a->imm, false, mop); + do_fp_ld(s, a->rt, clean_addr, mop); + op_addr_ldst_imm_post(s, a, dirty_addr, a->imm); + return true; } /* @@ -3640,12 +3607,7 @@ static void disas_ldst_reg(DisasContext *s, uint32_t insn) switch (extract32(insn, 24, 2)) { case 0: if (extract32(insn, 21, 1) == 0) { - /* Load/store register (unscaled immediate) - * Load/store immediate pre/post-indexed - * Load/store register unprivileged - */ - disas_ldst_reg_imm9(s, insn, opc, size, rt, is_vector); - return; + break; } switch (extract32(insn, 10, 2)) { case 0: