From patchwork Mon Mar 12 20:27:25 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Vivier X-Patchwork-Id: 884857 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=vivier.eu Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 400V8J26FBz9sSj for ; Tue, 13 Mar 2018 07:34:24 +1100 (AEDT) Received: from localhost ([::1]:34516 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1evU9G-0001mf-1q for incoming@patchwork.ozlabs.org; Mon, 12 Mar 2018 16:34:22 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:44897) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1evU3Q-0005ZS-7O for qemu-devel@nongnu.org; Mon, 12 Mar 2018 16:28:21 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1evU3M-00068e-TX for qemu-devel@nongnu.org; Mon, 12 Mar 2018 16:28:20 -0400 Received: from mout.kundenserver.de ([212.227.126.187]:36819) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1evU3M-00063Q-Fj for qemu-devel@nongnu.org; Mon, 12 Mar 2018 16:28:16 -0400 Received: from localhost.localdomain ([78.238.229.36]) by mrelayeu.kundenserver.de (mreue005 [212.227.15.167]) with ESMTPSA (Nemesis) id 0MHttJ-1ews9k2vHR-003dfu; Mon, 12 Mar 2018 21:27:54 +0100 From: Laurent Vivier To: qemu-devel@nongnu.org Date: Mon, 12 Mar 2018 21:27:25 +0100 Message-Id: <20180312202728.23790-9-laurent@vivier.eu> X-Mailer: git-send-email 2.14.3 In-Reply-To: <20180312202728.23790-1-laurent@vivier.eu> References: <20180312202728.23790-1-laurent@vivier.eu> X-Provags-ID: V03:K0:ABVUdhmM/OG5PP+HL4czs8MQRyfhiqWzU0AptHJJ9mlLCyXZ9ba tjSIiFJhYYzWkoop42mHaml5QdxTU5xPwl3IIGV18Yutv6m9EWCYs9vTVriM8HPg8QvcMLq C9YYVKoFWu6aTxP146zVLne4NS6UqyOs6XCc7ulRhQnVNgex5JptKaZQykSBSlWeR4fq/iE HtO4e/pCsyWLqK0R/6oMg== X-UI-Out-Filterresults: notjunk:1; V01:K0:DrF1lYZT3QA=:FPaWS8vU7AMUnc2LgSSBEo jVxca1BQQKc5xdckMk0xi9REzBw0DswWCJFuBMS3IODYbMiEEZtSA4LujHEL+KWDPaqO6as/L 2Og/6lX1uyiAbT+I8ItYb/5EEH9iJmhNZWlX1mDpH7kgcqLJMPXNYUE0hLfH6zAJW2ERrJyh8 pUHI+fSmAHc6g2AuLqW7z0spmSPqUEQyNnjs97cueS/1nS7SMTpdFsLe/Jopw1ztHEGc3J6Mq VbZ5xNdOJzHdxxGYDZONx9yPhpTb/xHPZWENi0D87J0ZqZ7IXj+FG8oORHGhs1b/f6FQJVpXA KA2mNKMfucgzgWVa1v2/xlwUGfZBQ9+C10A0TnzuL2IPdoYITszI0ZhZ1ZEmTEr5q48OkaCGM uAIztf0fMTlDb5+kaccTKEtoVvjH+ZPINcD1FUkw65kj5G06Cnnnw/U2Cw83Onb/uuIXZjtqq SZu+3l6yIYH/sahsTGjVV5UGT11066EMfGeiRe7sQL8+Xu7/aOj+d7OX7JkupOdbg40/5qnYq i7b1IQetanfPJcNlULHDyR/UcxwrTwTw0t8Ei6tusfUZtHn0l5RBsdMOt2m4VzXcYS+1CGyBI 8FmHqIPb35FjwxU9KH/wfrJgNS3Pwf7bcnXxshIwTeGIQHsgEuZp7qbPZGyvGt3ZpqZw6Yz5X HF6C3oy8mNFbbvTfFqjgLXyExcDY8loZR3y1P/a1e1FDSNPm7psuWs7IXiKWSCpwQdPPi5hkA 40FhwXOJD1OuoceuOBSFA19H6bzuZnzNwu93aw== X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 212.227.126.187 Subject: [Qemu-devel] [PATCH 08/11] target/m68k: implement fatanh 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: Thomas Huth , Laurent Vivier , Richard Henderson Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Using a local m68k floatx80_atanh() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier --- target/m68k/fpu_helper.c | 5 ++++ target/m68k/helper.h | 1 + target/m68k/softfloat.c | 65 ++++++++++++++++++++++++++++++++++++++++++++++++ target/m68k/softfloat.h | 1 + target/m68k/translate.c | 3 +++ 5 files changed, 75 insertions(+) diff --git a/target/m68k/fpu_helper.c b/target/m68k/fpu_helper.c index 18ad6999cb..38b663e1d2 100644 --- a/target/m68k/fpu_helper.c +++ b/target/m68k/fpu_helper.c @@ -633,3 +633,8 @@ void HELPER(facos)(CPUM68KState *env, FPReg *res, FPReg *val) { res->d = floatx80_acos(val->d, &env->fp_status); } + +void HELPER(fatanh)(CPUM68KState *env, FPReg *res, FPReg *val) +{ + res->d = floatx80_atanh(val->d, &env->fp_status); +} diff --git a/target/m68k/helper.h b/target/m68k/helper.h index 83247a8143..092baec3d5 100644 --- a/target/m68k/helper.h +++ b/target/m68k/helper.h @@ -82,6 +82,7 @@ DEF_HELPER_4(fsincos, void, env, fp, fp, fp) DEF_HELPER_3(fatan, void, env, fp, fp) DEF_HELPER_3(fasin, void, env, fp, fp) DEF_HELPER_3(facos, void, env, fp, fp) +DEF_HELPER_3(fatanh, void, env, fp, fp) DEF_HELPER_3(mac_move, void, env, i32, i32) DEF_HELPER_3(macmulf, i64, env, i32, i32) diff --git a/target/m68k/softfloat.c b/target/m68k/softfloat.c index 3d66f6946f..5ce8413e96 100644 --- a/target/m68k/softfloat.c +++ b/target/m68k/softfloat.c @@ -2302,3 +2302,68 @@ floatx80 floatx80_acos(floatx80 a, float_status *status) return a; } + +/*---------------------------------------------------------------------------- + | Hyperbolic arc tangent + *----------------------------------------------------------------------------*/ + +floatx80 floatx80_atanh(floatx80 a, float_status *status) +{ + flag aSign; + int32_t aExp; + uint64_t aSig; + + int8_t user_rnd_mode, user_rnd_prec; + + int32_t compact; + floatx80 fp0, fp1, fp2, one; + + aSig = extractFloatx80Frac(a); + aExp = extractFloatx80Exp(a); + aSign = extractFloatx80Sign(a); + + if (aExp == 0x7FFF && (uint64_t) (aSig << 1)) { + return propagateFloatx80NaNOneArg(a, status); + } + + if (aExp == 0 && aSig == 0) { + return packFloatx80(aSign, 0, 0); + } + + compact = floatx80_make_compact(aExp, aSig); + + if (compact >= 0x3FFF8000) { /* |X| >= 1 */ + if (aExp == one_exp && aSig == one_sig) { /* |X| == 1 */ + float_raise(float_flag_divbyzero, status); + return packFloatx80(aSign, floatx80_infinity.high, + floatx80_infinity.low); + } else { /* |X| > 1 */ + float_raise(float_flag_invalid, status); + return floatx80_default_nan(status); + } + } /* |X| < 1 */ + + user_rnd_mode = status->float_rounding_mode; + user_rnd_prec = status->floatx80_rounding_precision; + status->float_rounding_mode = float_round_nearest_even; + status->floatx80_rounding_precision = 80; + + one = packFloatx80(0, one_exp, one_sig); + fp2 = packFloatx80(aSign, 0x3FFE, one_sig); /* SIGN(X) * (1/2) */ + fp0 = packFloatx80(0, aExp, aSig); /* Y = |X| */ + fp1 = packFloatx80(1, aExp, aSig); /* -Y */ + fp0 = floatx80_add(fp0, fp0, status); /* 2Y */ + fp1 = floatx80_add(fp1, one, status); /* 1-Y */ + fp0 = floatx80_div(fp0, fp1, status); /* Z = 2Y/(1-Y) */ + fp0 = floatx80_lognp1(fp0, status); /* LOG1P(Z) */ + + status->float_rounding_mode = user_rnd_mode; + status->floatx80_rounding_precision = user_rnd_prec; + + a = floatx80_mul(fp0, fp2, + status); /* ATANH(X) = SIGN(X) * (1/2) * LOG1P(Z) */ + + float_raise(float_flag_inexact, status); + + return a; +} diff --git a/target/m68k/softfloat.h b/target/m68k/softfloat.h index 1140491c81..e9943aed20 100644 --- a/target/m68k/softfloat.h +++ b/target/m68k/softfloat.h @@ -40,4 +40,5 @@ floatx80 floatx80_cos(floatx80 a, float_status *status); floatx80 floatx80_atan(floatx80 a, float_status *status); floatx80 floatx80_asin(floatx80 a, float_status *status); floatx80 floatx80_acos(floatx80 a, float_status *status); +floatx80 floatx80_atanh(floatx80 a, float_status *status); #endif diff --git a/target/m68k/translate.c b/target/m68k/translate.c index 5fad76c785..2f7caa0ca0 100644 --- a/target/m68k/translate.c +++ b/target/m68k/translate.c @@ -5063,6 +5063,9 @@ DISAS_INSN(fpu) case 0x0c: /* fasin */ gen_helper_fasin(cpu_env, cpu_dest, cpu_src); break; + case 0x0d: /* fatanh */ + gen_helper_fatanh(cpu_env, cpu_dest, cpu_src); + break; case 0x0e: /* fsin */ gen_helper_fsin(cpu_env, cpu_dest, cpu_src); break;