Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762347AbZDCPrs (ORCPT ); Fri, 3 Apr 2009 11:47:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S934327AbZDCPqK (ORCPT ); Fri, 3 Apr 2009 11:46:10 -0400 Received: from wavehammer.waldi.eu.org ([82.139.201.20]:48196 "EHLO wavehammer.waldi.eu.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932203AbZDCPqI (ORCPT ); Fri, 3 Apr 2009 11:46:08 -0400 Date: Fri, 3 Apr 2009 17:41:10 +0200 From: Bastian Blank To: linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org Subject: [PATCH 2/5] libgcc: Add config and support headers Message-ID: <20090403154110.GB7200@wavehammer.waldi.eu.org> Mail-Followup-To: Bastian Blank , linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org References: <20090403153941.GA7045@wavehammer.waldi.eu.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20090403153941.GA7045@wavehammer.waldi.eu.org> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 8182 Lines: 260 Disable all floating point functions and add support for generic longlong divisions. Signed-off-by: Bastian Blank --- include/asm-generic/libgcc/longlong.h | 183 +++++++++++++++++++++++++++++++++ lib/libgcc/coretypes.h | 1 + lib/libgcc/longlong.h | 1 + lib/libgcc/tconfig.h | 8 ++ lib/libgcc/tm.h | 3 + lib/libgcc/tsystem.h | 1 + 6 files changed, 197 insertions(+), 0 deletions(-) create mode 100644 include/asm-generic/libgcc/longlong.h create mode 100644 lib/libgcc/coretypes.h create mode 100644 lib/libgcc/longlong.h create mode 100644 lib/libgcc/tconfig.h create mode 100644 lib/libgcc/tm.h create mode 100644 lib/libgcc/tsystem.h diff --git a/include/asm-generic/libgcc/longlong.h b/include/asm-generic/libgcc/longlong.h new file mode 100644 index 0000000..b5b9158 --- /dev/null +++ b/include/asm-generic/libgcc/longlong.h @@ -0,0 +1,183 @@ +/* + * Definitions for mixed size 32/64 bit arithmetic, generic parts. + * + * Copyright (C) 1991-2009 Free Software Foundation, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#define __BITS4 (W_TYPE_SIZE / 4) +#define __ll_B ((UWtype) 1 << (W_TYPE_SIZE / 2)) +#define __ll_lowpart(t) ((UWtype) (t) & (__ll_B - 1)) +#define __ll_highpart(t) ((UWtype) (t) >> (W_TYPE_SIZE / 2)) + +extern const UQItype __clz_tab[256]; + +#include + +#if !defined (add_ssaaaa) +#define add_ssaaaa(sh, sl, ah, al, bh, bl) \ + do { \ + UWtype __x; \ + __x = (al) + (bl); \ + (sh) = (ah) + (bh) + (__x < (al)); \ + (sl) = __x; \ + } while (0) +#endif + +#if !defined (sub_ddmmss) +#define sub_ddmmss(sh, sl, ah, al, bh, bl) \ + do { \ + UWtype __x; \ + __x = (al) - (bl); \ + (sh) = (ah) - (bh) - (__x > (al)); \ + (sl) = __x; \ + } while (0) +#endif + +/* If we lack umul_ppmm but have smul_ppmm, define umul_ppmm in terms of + smul_ppmm. */ +#if !defined (umul_ppmm) && defined (smul_ppmm) +#define umul_ppmm(w1, w0, u, v) \ + do { \ + UWtype __w1; \ + UWtype __xm0 = (u), __xm1 = (v); \ + smul_ppmm (__w1, w0, __xm0, __xm1); \ + (w1) = __w1 + (-(__xm0 >> (W_TYPE_SIZE - 1)) & __xm1) \ + + (-(__xm1 >> (W_TYPE_SIZE - 1)) & __xm0); \ + } while (0) +#endif + +/* If we still don't have umul_ppmm, define it using plain C. */ +#if !defined (umul_ppmm) +#define umul_ppmm(w1, w0, u, v) \ + do { \ + UWtype __x0, __x1, __x2, __x3; \ + UHWtype __ul, __vl, __uh, __vh; \ + \ + __ul = __ll_lowpart (u); \ + __uh = __ll_highpart (u); \ + __vl = __ll_lowpart (v); \ + __vh = __ll_highpart (v); \ + \ + __x0 = (UWtype) __ul * __vl; \ + __x1 = (UWtype) __ul * __vh; \ + __x2 = (UWtype) __uh * __vl; \ + __x3 = (UWtype) __uh * __vh; \ + \ + __x1 += __ll_highpart (__x0);/* this can't give carry */ \ + __x1 += __x2; /* but this indeed can */ \ + if (__x1 < __x2) /* did we get it? */ \ + __x3 += __ll_B; /* yes, add it in the proper pos. */ \ + \ + (w1) = __x3 + __ll_highpart (__x1); \ + (w0) = __ll_lowpart (__x1) * __ll_B + __ll_lowpart (__x0); \ + } while (0) +#endif + +#if !defined (__umulsidi3) +#define __umulsidi3(u, v) \ + ({DWunion __w; \ + umul_ppmm (__w.s.high, __w.s.low, u, v); \ + __w.ll; }) +#endif + +/* If the processor has no udiv_qrnnd but sdiv_qrnnd, go through + __udiv_w_sdiv (defined in libgcc or elsewhere). */ +#if !defined (udiv_qrnnd) && defined (sdiv_qrnnd) +#define udiv_qrnnd(q, r, nh, nl, d) \ + do { \ + USItype __r; \ + (q) = __udiv_w_sdiv (&__r, nh, nl, d); \ + (r) = __r; \ + } while (0) +#endif + +#if !defined (udiv_qrnnd) +#define udiv_qrnnd(q, r, n1, n0, d) \ + do { \ + UWtype __d1, __d0, __q1, __q0; \ + UWtype __r1, __r0, __m; \ + __d1 = __ll_highpart (d); \ + __d0 = __ll_lowpart (d); \ + \ + __r1 = (n1) % __d1; \ + __q1 = (n1) / __d1; \ + __m = (UWtype) __q1 * __d0; \ + __r1 = __r1 * __ll_B | __ll_highpart (n0); \ + if (__r1 < __m) \ + { \ + __q1--, __r1 += (d); \ + if (__r1 >= (d)) /* i.e. we didn't get carry when adding to __r1 */\ + if (__r1 < __m) \ + __q1--, __r1 += (d); \ + } \ + __r1 -= __m; \ + \ + __r0 = __r1 % __d1; \ + __q0 = __r1 / __d1; \ + __m = (UWtype) __q0 * __d0; \ + __r0 = __r0 * __ll_B | __ll_lowpart (n0); \ + if (__r0 < __m) \ + { \ + __q0--, __r0 += (d); \ + if (__r0 >= (d)) \ + if (__r0 < __m) \ + __q0--, __r0 += (d); \ + } \ + __r0 -= __m; \ + \ + (q) = (UWtype) __q1 * __ll_B | __q0; \ + (r) = __r0; \ + } while (0) +#define UDIV_NEEDS_NORMALIZATION 1 +#endif + +#if !defined (count_leading_zeros) +#define count_leading_zeros(count, x) \ + do { \ + UWtype __xr = (x); \ + UWtype __a; \ + \ + if (W_TYPE_SIZE <= 32) \ + { \ + __a = __xr < ((UWtype)1<<2*__BITS4) \ + ? (__xr < ((UWtype)1<<__BITS4) ? 0 : __BITS4) \ + : (__xr < ((UWtype)1<<3*__BITS4) ? 2*__BITS4 : 3*__BITS4); \ + } \ + else \ + { \ + for (__a = W_TYPE_SIZE - 8; __a > 0; __a -= 8) \ + if (((__xr >> __a) & 0xff) != 0) \ + break; \ + } \ + \ + (count) = W_TYPE_SIZE - (__clz_tab[__xr >> __a] + __a); \ + } while (0) +#define COUNT_LEADING_ZEROS_0 W_TYPE_SIZE +#endif + +#if !defined (count_trailing_zeros) +#define count_trailing_zeros(count, x) \ + do { \ + UWtype __ctz_x = (x); \ + UWtype __ctz_c; \ + count_leading_zeros (__ctz_c, __ctz_x & -__ctz_x); \ + (count) = W_TYPE_SIZE - 1 - __ctz_c; \ + } while (0) +#endif + +#ifndef UDIV_NEEDS_NORMALIZATION +#define UDIV_NEEDS_NORMALIZATION 0 +#endif diff --git a/lib/libgcc/coretypes.h b/lib/libgcc/coretypes.h new file mode 100644 index 0000000..40a8c17 --- /dev/null +++ b/lib/libgcc/coretypes.h @@ -0,0 +1 @@ +/* empty */ diff --git a/lib/libgcc/longlong.h b/lib/libgcc/longlong.h new file mode 100644 index 0000000..5127ca8 --- /dev/null +++ b/lib/libgcc/longlong.h @@ -0,0 +1 @@ +#include diff --git a/lib/libgcc/tconfig.h b/lib/libgcc/tconfig.h new file mode 100644 index 0000000..16df0dc --- /dev/null +++ b/lib/libgcc/tconfig.h @@ -0,0 +1,8 @@ +#include + +#define LIBGCC2_DOUBLE_TYPE_SIZE 0 +#define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 0 +#define LIBGCC2_HAS_SF_MODE 0 +#define LIBGCC2_HAS_DF_MODE 0 +#define LIBGCC2_HAS_XF_MODE 0 +#define LIBGCC2_HAS_FF_MODE 0 diff --git a/lib/libgcc/tm.h b/lib/libgcc/tm.h new file mode 100644 index 0000000..59f75d6 --- /dev/null +++ b/lib/libgcc/tm.h @@ -0,0 +1,3 @@ +#include + +#define abort() do { BUG(); return 0; } while (0) diff --git a/lib/libgcc/tsystem.h b/lib/libgcc/tsystem.h new file mode 100644 index 0000000..40a8c17 --- /dev/null +++ b/lib/libgcc/tsystem.h @@ -0,0 +1 @@ +/* empty */ -- 1.6.2.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/