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Wed, 12 May 2021 15:56:08 -0300 Received: from eldorado.org.br (unknown [10.10.70.45]) by power9a (Postfix) with ESMTP id 652A880139F; Wed, 12 May 2021 15:56:08 -0300 (-03) From: matheus.ferst@eldorado.org.br To: qemu-devel@nongnu.org, qemu-ppc@nongnu.org Subject: [PATCH v4 29/31] target/ppc: Implement cfuged instruction Date: Wed, 12 May 2021 15:54:39 -0300 Message-Id: <20210512185441.3619828-30-matheus.ferst@eldorado.org.br> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210512185441.3619828-1-matheus.ferst@eldorado.org.br> References: <20210512185441.3619828-1-matheus.ferst@eldorado.org.br> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-OriginalArrivalTime: 12 May 2021 18:56:08.0735 (UTC) FILETIME=[780E3AF0:01D74760] X-Host-Lookup-Failed: Reverse DNS lookup failed for 201.28.113.2 (failed) Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=201.28.113.2; envelope-from=matheus.ferst@eldorado.org.br; helo=outlook.eldorado.org.br X-Spam_score_int: -10 X-Spam_score: -1.1 X-Spam_bar: - X-Spam_report: (-1.1 / 5.0 requ) BAYES_00=-1.9, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: richard.henderson@linaro.org, f4bug@amsat.org, luis.pires@eldorado.org.br, lagarcia@br.ibm.com, bruno.larsen@eldorado.org.br, matheus.ferst@eldorado.org.br, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" From: Matheus Ferst Signed-off-by: Matheus Ferst --- target/ppc/helper.h | 1 + target/ppc/insn32.decode | 4 +++ target/ppc/int_helper.c | 39 ++++++++++++++++++++++ target/ppc/translate/fixedpoint-impl.c.inc | 16 +++++++-- 4 files changed, 58 insertions(+), 2 deletions(-) diff --git a/target/ppc/helper.h b/target/ppc/helper.h index ea9f2a236c..c517b9f025 100644 --- a/target/ppc/helper.h +++ b/target/ppc/helper.h @@ -46,6 +46,7 @@ DEF_HELPER_4(divwe, tl, env, tl, tl, i32) DEF_HELPER_FLAGS_1(popcntb, TCG_CALL_NO_RWG_SE, tl, tl) DEF_HELPER_FLAGS_2(cmpb, TCG_CALL_NO_RWG_SE, tl, tl, tl) DEF_HELPER_3(sraw, tl, env, tl, tl) +DEF_HELPER_FLAGS_2(cfuged, TCG_CALL_NO_RWG_SE, i64, i64, i64) #if defined(TARGET_PPC64) DEF_HELPER_FLAGS_2(cmpeqb, TCG_CALL_NO_RWG_SE, i32, tl, tl) DEF_HELPER_FLAGS_1(popcntw, TCG_CALL_NO_RWG_SE, tl, tl) diff --git a/target/ppc/insn32.decode b/target/ppc/insn32.decode index d69c0bc14c..64788e2a4b 100644 --- a/target/ppc/insn32.decode +++ b/target/ppc/insn32.decode @@ -87,6 +87,10 @@ STDUX 011111 ..... ..... ..... 0010110101 - = @X ADDI 001110 ..... ..... ................ @D ADDIS 001111 ..... ..... ................ @D =20 +## Fixed-Point Logical Instructions + +CFUGED 011111 ..... ..... ..... 0011011100 - @X + ### Move To/From System Register Instructions =20 SETBC 011111 ..... ..... ----- 0110000000 - @X_bi diff --git a/target/ppc/int_helper.c b/target/ppc/int_helper.c index a44c2d90ea..d1cfb915ae 100644 --- a/target/ppc/int_helper.c +++ b/target/ppc/int_helper.c @@ -320,6 +320,45 @@ target_ulong helper_popcntb(target_ulong val) } #endif =20 +uint64_t helper_cfuged(uint64_t src, uint64_t mask) +{ + target_ulong m, left =3D 0, right =3D 0; + unsigned int n, i =3D 64; + bool bit =3D 0; + + if (mask =3D=3D 0 || mask =3D=3D -1) { + return src; + } + + while (i) { + n =3D ctz64(mask); + if (n > i) { + n =3D i; + } + + m =3D (1ll << n) - 1; + if (bit) { + right =3D ror64(right | (src & m), n); + } else { + left =3D ror64(left | (src & m), n); + } + + src >>=3D n; + mask >>=3D n; + i -=3D n; + bit =3D !bit; + mask =3D ~mask; + } + + if (bit) { + n =3D ctpop64(mask); + } else { + n =3D 64 - ctpop64(mask); + } + + return left | (right >> n); +} + /*************************************************************************= ****/ /* PowerPC 601 specific instructions (POWER bridge) */ target_ulong helper_div(CPUPPCState *env, target_ulong arg1, target_ulong = arg2) diff --git a/target/ppc/translate/fixedpoint-impl.c.inc b/target/ppc/transl= ate/fixedpoint-impl.c.inc index 37dd25148c..4617f7356b 100644 --- a/target/ppc/translate/fixedpoint-impl.c.inc +++ b/target/ppc/translate/fixedpoint-impl.c.inc @@ -210,8 +210,8 @@ static bool do_set_bool_cond(DisasContext *ctx, arg_X_b= i *a, bool neg, bool rev) =20 tcg_gen_extu_i32_tl(temp, cpu_crf[a->bi >> 2]); tcg_gen_andi_tl(temp, temp, mask); - tcg_gen_movcond_tl(a->r?TCG_COND_EQ:TCG_COND_NE, cpu_gpr[a->rt], temp, - tcg_constant_tl(0), tcg_constant_tl(a->n?-1:1), + tcg_gen_movcond_tl(rev?TCG_COND_EQ:TCG_COND_NE, cpu_gpr[a->rt], temp, + tcg_constant_tl(0), tcg_constant_tl(neg?-1:1), tcg_constant_tl(0)); tcg_temp_free(temp); =20 @@ -222,3 +222,15 @@ TRANS(SETBC, do_set_bool_cond, false, false) TRANS(SETBCR, do_set_bool_cond, false, true) TRANS(SETNBC, do_set_bool_cond, true, false) TRANS(SETNBCR, do_set_bool_cond, true, true) + +static bool trans_CFUGED(DisasContext *ctx, arg_X *a) +{ + REQUIRE_64BIT(ctx); + REQUIRE_INSNS_FLAGS2(ctx, ISA310); +#if defined(TARGET_PPC64) + gen_helper_cfuged(cpu_gpr[a->ra], cpu_gpr[a->rt], cpu_gpr[a->rb]); +#else + gen_invalid(ctx); +#endif + return true; +} --=20 2.25.1