From patchwork Thu Jul 26 04:59:21 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zong Li X-Patchwork-Id: 949471 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=sourceware.org (client-ip=209.132.180.131; helo=sourceware.org; envelope-from=libc-alpha-return-94760-incoming=patchwork.ozlabs.org@sourceware.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=andestech.com Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; secure) header.d=sourceware.org header.i=@sourceware.org header.b="DXd28R1S"; dkim-atps=neutral Received: from sourceware.org (server1.sourceware.org [209.132.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41bfzH10BJz9ryl for ; Thu, 26 Jul 2018 14:59:54 +1000 (AEST) DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:from:to:cc:subject:date:message-id :mime-version:content-type; q=dns; s=default; b=WEjOjPkFzSvBzhGL dmqXBHnqtO/q94k7HV5AgCvumWW7yAy1EKN1RDbCnWEYYQThsNm3yKZuHa8I+qug NAfB+iW6YsuZrUsTN81/abWgVKwEZxFct75N77jiEeiWoaFnEzGzEnv5VOFANs15 6k1YFuIrVAN1UUZv+buTup4kA1w= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:from:to:cc:subject:date:message-id :mime-version:content-type; s=default; bh=b8ZLwy1pVZVIPUP6ebXhaz K8/LQ=; b=DXd28R1STQXRmy5HifPf94ODRo1bKdQcA9I48Uf0KRwDCzl3jwRQZv 23429nJT7C+m9iFLStPGeBJ84xYnXtADA5hJQOE7N2db//donu+WKSeAjSMDNl1U cBkk3x6XHuYe5Wpdy+UuWO+bQbjD/IUluBFtiP5AuvM7h8KY9S9dk= Received: (qmail 28307 invoked by alias); 26 Jul 2018 04:59:46 -0000 Mailing-List: contact libc-alpha-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: libc-alpha-owner@sourceware.org Delivered-To: mailing list libc-alpha@sourceware.org Received: (qmail 28284 invoked by uid 89); 26 Jul 2018 04:59:44 -0000 Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-26.7 required=5.0 tests=AWL, BAYES_00, GIT_PATCH_0, GIT_PATCH_1, GIT_PATCH_2, GIT_PATCH_3, RCVD_IN_DNSWL_NONE, SPF_PASS autolearn=ham version=3.3.2 spammy=H*r:0800, HTo:U*andrew, H*RU:sk:mail.an, Hx-spam-relays-external:14.3.123.3 X-HELO: ATCSQR.andestech.com From: Zong Li To: , , , , CC: , , , Zong Li Subject: [PATCH v2] soft-fp: Add the lack of implementation for 128 bit self-contained. Date: Thu, 26 Jul 2018 12:59:21 +0800 Message-ID: <1532581161-6380-1-git-send-email-zong@andestech.com> MIME-Version: 1.0 X-DNSRBL: X-MAIL: ATCSQR.andestech.com w6Q4xfJr059020 Here only add the lack of implementation when building the RISC-V 32-bit port. These marcos are used when the following situations occur at the same time: soft-fp fma, ldbl-128 and 32-bit _FP_W_TYPE_SIZE. The RISC-V 32-bit port is the first port which use all three together. This is the building flow about the situation: When building soft-fp/s_fmal.c, there uses the FP_FMA_Q in __fmal. The _FP_W_TYPE_SIZE is defined to 32-bit in sysdeps/riscv/sfp-machine.h, so the FP_FMA_Q was defined to _FP_FMA (Q, 4, 8, R, X, Y, Z) in soft-fp/quad.h. Something in the soft-fp/quad.h: #if _FP_W_TYPE_SIZE < 64 # define FP_FMA_Q(R, X, Y, Z) _FP_FMA (Q, 4, 8, R, X, Y, Z) #else # define FP_FMA_Q(R, X, Y, Z) _FP_FMA (Q, 2, 4, R, X, Y, Z) #endif Finally, in _FP_FMA (fs, wc, dwc, R, X, Y, Z), it will use the _FP_FRAC_HIGHBIT_DW_##dwc macro, and it will be expanded to _FP_FRAC_HIGHBIT_DW_8, but the _FP_FRAC_HIGHBIT_DW_8 is not be implemented in soft-fp/op-8.h. there is only _FP_FRAC_HIGHBIT_DW_1, _FP_FRAC_HIGHBIT_DW_2 and _FP_FRAC_HIGHBIT_DW_4 in the soft-fp/op-*.h. * soft-fp/op-8.h: Add macros. --- ChangeLog | 4 +++ soft-fp/op-8.h | 107 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 111 insertions(+) diff --git a/ChangeLog b/ChangeLog index 8b509d4..a8daea6 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,7 @@ +2018-07-25 Zong Li + + * soft-fp/op-8.h: Add macros. + 2018-07-25 Carlos O'Donell [BZ #23393] diff --git a/soft-fp/op-8.h b/soft-fp/op-8.h index ffed258..4528024 100644 --- a/soft-fp/op-8.h +++ b/soft-fp/op-8.h @@ -35,6 +35,7 @@ /* We need just a few things from here for op-4, if we ever need some other macros, they can be added. */ #define _FP_FRAC_DECL_8(X) _FP_W_TYPE X##_f[8] +#define _FP_FRAC_SET_8(X, I) __FP_FRAC_SET_8 (X, I) #define _FP_FRAC_HIGH_8(X) (X##_f[7]) #define _FP_FRAC_LOW_8(X) (X##_f[0]) #define _FP_FRAC_WORD_8(X, w) (X##_f[w]) @@ -147,4 +148,110 @@ } \ while (0) +#define _FP_FRAC_ADD_8(R, X, Y) \ + do \ + { \ + _FP_W_TYPE fa8_c = 0; \ + for (int fa8_i = 0; fa8_i < 8; ++fa8_i) \ + { \ + R##_f[fa8_i] = X##_f[fa8_i] + Y##_f[fa8_i] + fa8_c; \ + fa8_c = (fa8_c ? \ + R##_f[fa8_i] <= X##_f[fa8_i] : \ + R##_f[fa8_i] < X##_f[fa8_i]); \ + } \ + } \ + while (0) + +#define _FP_FRAC_SUB_8(R, X, Y) \ + do \ + { \ + _FP_W_TYPE fs8_c = 0; \ + for (int fs8_i = 0; fs8_i < 8; ++fs8_i) \ + { \ + R##_f[fs8_i] = X##_f[fs8_i] - Y##_f[fs8_i] - fs8_c; \ + fs8_c = (fs8_c ? \ + R##_f[fs8_i] >= X##_f[fs8_i] : \ + R##_f[fs8_i] > X##_f[fs8_i]); \ + } \ + } \ + while (0) + +#define _FP_FRAC_CLZ_8(R, X) \ + do \ + { \ + if (X##_f[7]) \ + __FP_CLZ ((R), X##_f[7]); \ + else if (X##_f[6]) \ + { \ + __FP_CLZ ((R), X##_f[6]); \ + (R) += _FP_W_TYPE_SIZE; \ + } \ + else if (X##_f[5]) \ + { \ + __FP_CLZ ((R), X##_f[5]); \ + (R) += _FP_W_TYPE_SIZE*2; \ + } \ + else if (X##_f[4]) \ + { \ + __FP_CLZ ((R), X##_f[4]); \ + (R) += _FP_W_TYPE_SIZE*3; \ + } \ + else if (X##_f[3]) \ + { \ + __FP_CLZ ((R), X##_f[3]); \ + (R) += _FP_W_TYPE_SIZE*4; \ + } \ + else if (X##_f[2]) \ + { \ + __FP_CLZ ((R), X##_f[2]); \ + (R) += _FP_W_TYPE_SIZE*5; \ + } \ + else if (X##_f[1]) \ + { \ + __FP_CLZ ((R), X##_f[1]); \ + (R) += _FP_W_TYPE_SIZE*6; \ + } \ + else \ + { \ + __FP_CLZ ((R), X##_f[0]); \ + (R) += _FP_W_TYPE_SIZE*7; \ + } \ + } \ + while (0) + +#define _FP_MINFRAC_8 0, 0, 0, 0, 0, 0, 0, 1 + +#define _FP_FRAC_NEGP_8(X) ((_FP_WS_TYPE) X##_f[7] < 0) +#define _FP_FRAC_ZEROP_8(X) \ + ((X##_f[0] | X##_f[1] | X##_f[2] | X##_f[3] | \ + X##_f[4] | X##_f[5] | X##_f[6] | X##_f[7]) == 0) +#define _FP_FRAC_HIGHBIT_DW_8(fs, X) \ + (_FP_FRAC_HIGH_DW_##fs (X) & _FP_HIGHBIT_DW_##fs) + + +#define _FP_FRAC_COPY_4_8(D, S) \ + do \ + { \ + D##_f[0] = S##_f[0]; \ + D##_f[1] = S##_f[1]; \ + D##_f[2] = S##_f[2]; \ + D##_f[3] = S##_f[3]; \ + } \ + while (0) + +#define _FP_FRAC_COPY_8_4(D, S) \ + do \ + { \ + D##_f[0] = S##_f[0]; \ + D##_f[1] = S##_f[1]; \ + D##_f[2] = S##_f[2]; \ + D##_f[3] = S##_f[3]; \ + D##_f[4] = D##_f[5] = D##_f[6] = D##_f[7]= 0; \ + } \ + while (0) + +#define __FP_FRAC_SET_8(X, I7, I6, I5, I4, I3, I2, I1, I0) \ + (X##_f[7] = I7, X##_f[6] = I6, X##_f[5] = I5, X##_f[4] = I4, \ + X##_f[3] = I3, X##_f[2] = I2, X##_f[1] = I1, X##_f[0] = I0) + #endif /* !SOFT_FP_OP_8_H */