From nobody Mon Feb 9 17:21:59 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zoho.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1495747195685688.046924593635; Thu, 25 May 2017 14:19:55 -0700 (PDT) Received: from localhost ([::1]:33745 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dE0Ak-0004GS-Az for importer@patchew.org; Thu, 25 May 2017 17:19:54 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:55236) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dDzwc-0005ef-MZ for qemu-devel@nongnu.org; Thu, 25 May 2017 17:05:20 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dDzwa-0001Lq-Er for qemu-devel@nongnu.org; Thu, 25 May 2017 17:05:18 -0400 Received: from hall.aurel32.net ([2001:bc8:30d7:100::1]:37428) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dDzwa-0001Kg-6D for qemu-devel@nongnu.org; Thu, 25 May 2017 17:05:16 -0400 Received: from [2001:bc8:30d7:121:cc44:2c6c:4d9c:42c0] (helo=ohm.rr44.fr) by hall.aurel32.net with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1dDzwY-0008RT-Hc; Thu, 25 May 2017 23:05:14 +0200 Received: from aurel32 by ohm.rr44.fr with local (Exim 4.89) (envelope-from ) id 1dDzwW-0001KS-M8; Thu, 25 May 2017 23:05:12 +0200 From: Aurelien Jarno To: qemu-devel@nongnu.org Date: Thu, 25 May 2017 23:04:59 +0200 Message-Id: <20170525210508.4910-18-aurelien@aurel32.net> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170525210508.4910-1-aurelien@aurel32.net> References: <20170525210508.4910-1-aurelien@aurel32.net> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2001:bc8:30d7:100::1 Subject: [Qemu-devel] [PATCH 17/26] target/s390x: improve MOVE LONG and MOVE LONG EXTENDED X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Alexander Graf , Aurelien Jarno , Richard Henderson Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" As MVCL and MVCLE only differ by their operands, use a common do_mvcl helper. Optimize it calling fast_memmove and fast_memset. Correctly write back addresses. Signed-off-by: Aurelien Jarno Reviewed-by: Richard Henderson --- target/s390x/mem_helper.c | 90 +++++++++++++++++++++----------------------= ---- 1 file changed, 40 insertions(+), 50 deletions(-) diff --git a/target/s390x/mem_helper.c b/target/s390x/mem_helper.c index aa665fe0f7..6add413531 100644 --- a/target/s390x/mem_helper.c +++ b/target/s390x/mem_helper.c @@ -621,49 +621,60 @@ void HELPER(stam)(CPUS390XState *env, uint32_t r1, ui= nt64_t a2, uint32_t r3) } } =20 -/* move long */ -uint32_t HELPER(mvcl)(CPUS390XState *env, uint32_t r1, uint32_t r2) +/* move long helper */ +static inline uint32_t do_mvcl(CPUS390XState *env, + uint64_t *dest, uint64_t *destlen, + uint64_t *src, uint64_t *srclen, + uint8_t pad, uintptr_t ra) { - uintptr_t ra =3D GETPC(); - uint64_t destlen =3D env->regs[r1 + 1] & 0xffffff; - uint64_t dest =3D get_address(env, r1); - uint64_t srclen =3D env->regs[r2 + 1] & 0xffffff; - uint64_t src =3D get_address(env, r2); - uint8_t pad =3D env->regs[r2 + 1] >> 24; - uint8_t v; + uint64_t len =3D MIN(*srclen, *destlen); uint32_t cc; =20 - if (destlen =3D=3D srclen) { + if (*destlen =3D=3D *srclen) { cc =3D 0; - } else if (destlen < srclen) { + } else if (*destlen < *srclen) { cc =3D 1; } else { cc =3D 2; } =20 - if (srclen > destlen) { - srclen =3D destlen; - } + /* Copy the src array */ + fast_memmove(env, *dest, *src, len, ra); + *src +=3D len; + *srclen -=3D len; + *dest +=3D len; + *destlen -=3D len; =20 - for (; destlen && srclen; src++, dest++, destlen--, srclen--) { - v =3D cpu_ldub_data_ra(env, src, ra); - cpu_stb_data_ra(env, dest, v, ra); - } + /* Pad the remaining area */ + fast_memset(env, *dest, pad, *destlen, ra); + *dest +=3D *destlen; + *destlen =3D 0; =20 - for (; destlen; dest++, destlen--) { - cpu_stb_data_ra(env, dest, pad, ra); - } + return cc; +} =20 - env->regs[r1 + 1] =3D destlen; - /* can't use srclen here, we trunc'ed it */ - env->regs[r2 + 1] -=3D src - env->regs[r2]; +/* move long */ +uint32_t HELPER(mvcl)(CPUS390XState *env, uint32_t r1, uint32_t r2) +{ + uintptr_t ra =3D GETPC(); + uint64_t destlen =3D env->regs[r1 + 1] & 0xffffff; + uint64_t dest =3D get_address(env, r1); + uint64_t srclen =3D env->regs[r2 + 1] & 0xffffff; + uint64_t src =3D get_address(env, r2); + uint8_t pad =3D env->regs[r2 + 1] >> 24; + uint32_t cc; + + cc =3D do_mvcl(env, &dest, &destlen, &src, &srclen, pad, ra); + + env->regs[r1 + 1] =3D deposit64(env->regs[r1 + 1], 0, 24, destlen); + env->regs[r2 + 1] =3D deposit64(env->regs[r2 + 1], 0, 24, srclen); set_address(env, r1, dest); set_address(env, r2, src); =20 return cc; } =20 -/* move long extended another memcopy insn with more bells and whistles */ +/* move long extended */ uint32_t HELPER(mvcle)(CPUS390XState *env, uint32_t r1, uint64_t a2, uint32_t r3) { @@ -672,34 +683,13 @@ uint32_t HELPER(mvcle)(CPUS390XState *env, uint32_t r= 1, uint64_t a2, uint64_t dest =3D get_address(env, r1); uint64_t srclen =3D get_length(env, r3 + 1); uint64_t src =3D get_address(env, r3); - uint8_t pad =3D a2 & 0xff; - uint8_t v; + uint8_t pad =3D a2; uint32_t cc; =20 - if (destlen =3D=3D srclen) { - cc =3D 0; - } else if (destlen < srclen) { - cc =3D 1; - } else { - cc =3D 2; - } - - if (srclen > destlen) { - srclen =3D destlen; - } - - for (; destlen && srclen; src++, dest++, destlen--, srclen--) { - v =3D cpu_ldub_data_ra(env, src, ra); - cpu_stb_data_ra(env, dest, v, ra); - } - - for (; destlen; dest++, destlen--) { - cpu_stb_data_ra(env, dest, pad, ra); - } + cc =3D do_mvcl(env, &dest, &destlen, &src, &srclen, pad, ra); =20 - set_length(env, r1 + 1 , destlen); - /* can't use srclen here, we trunc'ed it */ - set_length(env, r3 + 1, env->regs[r3 + 1] - src - env->regs[r3]); + set_length(env, r1 + 1, destlen); + set_length(env, r3 + 1, srclen); set_address(env, r1, dest); set_address(env, r3, src); =20 --=20 2.11.0