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Makefile.in (LIBGCC_DEPS): Add libgcc2.h.
* Makefile.in (LIBGCC_DEPS): Add libgcc2.h. * libgcc2.c (__clz_tab[], __popcount_tab[]): Set the fixed dimension of these arrays. * libgcc2.h (__clz_tab[], __popcount_tab[]): Add exports of these arrays. * longlong.h: Only provide a prototype for the __clz_tab[] array if this header has not been included from libgcc2.h. * config/stormy16/stormy16-lib2.c: Include libgcc2.h rather than defining own types. Provide prototypes for exported functions. Use the __clz_tab[] and __popcount_tab[] arrays provided by libgcc2.c. From-SVN: r104081
This commit is contained in:
Nick Clifton
Nick Clifton
parent
a174b2f8ec
commit
dcfae47c5e
@ -1,3 +1,18 @@
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2005-09-09 Nick Clifton <nickc@redhat.com>
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* Makefile.in (LIBGCC_DEPS): Add libgcc2.h.
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* libgcc2.c (__clz_tab[], __popcount_tab[]): Set the fixed
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dimension of these arrays.
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* libgcc2.h (__clz_tab[], __popcount_tab[]): Add exports of
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these arrays.
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* longlong.h: Only provide a prototype for the __clz_tab[] array
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if this header has not been included from libgcc2.h.
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* config/stormy16/stormy16-lib2.c: Include libgcc2.h rather than
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defining own types.
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Provide prototypes for exported functions.
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Use the __clz_tab[] and __popcount_tab[] arrays provided by
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libgcc2.c.
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2005-09-08 Josh Conner <jconner@apple.com>
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PR c++/23180
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@ -1350,7 +1350,7 @@ libgcc.mk: config.status Makefile mklibgcc $(LIB2ADD) $(LIB2ADD_ST) specs \
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# All the things that might cause us to want to recompile bits of libgcc.
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LIBGCC_DEPS = $(GCC_PASSES) $(LANGUAGES) stmp-int-hdrs $(STMP_FIXPROTO) \
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libgcc.mk $(srcdir)/libgcc2.c $(srcdir)/libgcov.c $(TCONFIG_H) \
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$(MACHMODE_H) longlong.h gbl-ctors.h config.status \
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$(MACHMODE_H) longlong.h gbl-ctors.h config.status $(srcdir)/libgcc2.h \
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tsystem.h $(FPBIT) $(DPBIT) $(TPBIT) $(LIB2ADD) \
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$(LIB2ADD_ST) $(LIB2ADDEH) $(LIB2ADDEHDEP) $(EXTRA_PARTS) \
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$(srcdir)/config/$(LIB1ASMSRC) \
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@ -1,19 +1,79 @@
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typedef int HItype __attribute__ ((mode (HI)));
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typedef int SItype __attribute__ ((mode (SI)));
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typedef unsigned int USItype __attribute__ ((mode (SI)));
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/* This file contains 16-bit versions of some of the functions found in
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libgcc2.c. Really libgcc ought to be moved out of the gcc directory
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and into its own top level directory, and then split up into multiple
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files. On this glorious day maybe this code can be integrated into
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it too. */
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/* Copyright (C) 2005 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2, or (at your option) any later
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version.
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In addition to the permissions in the GNU General Public License, the
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Free Software Foundation gives you unlimited permission to link the
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compiled version of this file into combinations with other programs,
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and to distribute those combinations without any restriction coming
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from the use of this file. (The General Public License restrictions
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do apply in other respects; for example, they cover modification of
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the file, and distribution when not linked into a combine
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executable.)
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING. If not, write to the Free
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Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301, USA. */
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#include "tconfig.h"
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#include "tsystem.h"
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#include "coretypes.h"
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#include "tm.h"
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#ifdef HAVE_GAS_HIDDEN
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#define ATTRIBUTE_HIDDEN __attribute__ ((__visibility__ ("hidden")))
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#else
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#define ATTRIBUTE_HIDDEN
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#endif
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#include "libgcc2.h"
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#undef int
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/* These prototypes would normally live in libgcc2.h, but this can
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only happen once the code below is integrated into libgcc2.c. */
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extern USItype udivmodsi4 (USItype, USItype, word_type);
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extern SItype __divsi3 (SItype, SItype);
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extern SItype __modsi3 (SItype, SItype);
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extern SItype __udivsi3 (SItype, SItype);
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extern SItype __umodsi3 (SItype, SItype);
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extern SItype __ashlsi3 (SItype, SItype);
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extern SItype __ashrsi3 (SItype, SItype);
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extern USItype __lshrsi3 (USItype, USItype);
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extern int __popcounthi2 (UHWtype);
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extern int __parityhi2 (UHWtype);
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extern int __clzhi2 (UHWtype);
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extern int __ctzhi2 (UHWtype);
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typedef int word_type __attribute__ ((mode (__word__)));
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USItype
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udivmodsi4(USItype num, USItype den, word_type modwanted)
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udivmodsi4 (USItype num, USItype den, word_type modwanted)
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{
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USItype bit = 1;
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USItype res = 0;
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while (den < num && bit && !(den & (1L<<31)))
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while (den < num && bit && !(den & (1L << 31)))
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{
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den <<=1;
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bit <<=1;
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den <<= 1;
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bit <<= 1;
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}
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while (bit)
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{
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@ -22,15 +82,15 @@ udivmodsi4(USItype num, USItype den, word_type modwanted)
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num -= den;
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res |= bit;
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}
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bit >>=1;
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den >>=1;
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bit >>= 1;
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den >>= 1;
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}
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if (modwanted) return num;
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if (modwanted)
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return num;
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return res;
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}
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SItype
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__divsi3 (SItype a, SItype b)
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{
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@ -57,8 +117,6 @@ __divsi3 (SItype a, SItype b)
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return res;
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}
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SItype
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__modsi3 (SItype a, SItype b)
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{
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@ -82,17 +140,12 @@ __modsi3 (SItype a, SItype b)
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return res;
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}
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SItype
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__udivsi3 (SItype a, SItype b)
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{
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return udivmodsi4 (a, b, 0);
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}
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SItype
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__umodsi3 (SItype a, SItype b)
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{
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@ -141,22 +194,13 @@ __lshrsi3 (USItype a, USItype b)
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return a;
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}
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static const unsigned char __popcount_tab[] =
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{
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0,1,1,2,1,2,2,3,1,2,2,3,2,3,3,4,1,2,2,3,2,3,3,4,2,3,3,4,3,4,4,5,
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1,2,2,3,2,3,3,4,2,3,3,4,3,4,4,5,2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,
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1,2,2,3,2,3,3,4,2,3,3,4,3,4,4,5,2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,
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2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,3,4,4,5,4,5,5,6,4,5,5,6,5,6,6,7,
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1,2,2,3,2,3,3,4,2,3,3,4,3,4,4,5,2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,
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2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,3,4,4,5,4,5,5,6,4,5,5,6,5,6,6,7,
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2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,3,4,4,5,4,5,5,6,4,5,5,6,5,6,6,7,
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3,4,4,5,4,5,5,6,4,5,5,6,5,6,6,7,4,5,5,6,5,6,6,7,5,6,6,7,6,7,7,8,
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};
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/* Returns the number of set bits in X.
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FIXME: The return type really should be unsigned,
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but this is not how the builtin is prototyped. */
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int
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__popcounthi2 (unsigned int x)
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__popcounthi2 (UHWtype x)
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{
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unsigned int ret;
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int ret;
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ret = __popcount_tab [x & 0xff];
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ret += __popcount_tab [(x >> 8) & 0xff];
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@ -164,8 +208,12 @@ __popcounthi2 (unsigned int x)
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return ret;
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}
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/* Returns the number of set bits in X, modulo 2.
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FIXME: The return type really should be unsigned,
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but this is not how the builtin is prototyped. */
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int
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__parityhi2 (unsigned int x)
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__parityhi2 (UHWtype x)
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{
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x ^= x >> 8;
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x ^= x >> 4;
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@ -173,19 +221,31 @@ __parityhi2 (unsigned int x)
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return (0x6996 >> x) & 1;
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}
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int
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__ctzhi2 (unsigned int x)
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{
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extern int __ctzsi2 (unsigned long);
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unsigned long y = x;
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return __ctzsi2 (y << 16) - 16;
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}
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/* Returns the number of leading zero bits in X.
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FIXME: The return type really should be unsigned,
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but this is not how the builtin is prototyped. */
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int
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__clzhi2 (unsigned int x)
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__clzhi2 (UHWtype x)
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{
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extern int __clzsi2 (unsigned long);
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return __clzsi2 (x) - 16;
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if (x > 0xff)
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return 8 - __clz_tab[x >> 8];
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return 16 - __clz_tab[x];
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}
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/* Returns the number of trailing zero bits in X.
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FIXME: The return type really should be unsigned,
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but this is not how the builtin is prototyped. */
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int
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__ctzhi2 (UHWtype x)
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{
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/* This is cunning. It converts X into a number with only the one bit
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set, the bit was the least significant bit in X. From this we can
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use the __clz_tab[] array to compute the number of trailing bits. */
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x &= - x;
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if (x > 0xff)
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return __clz_tab[x >> 8] + 7;
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return __clz_tab[x] - 1;
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}
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@ -648,7 +648,7 @@ __udiv_w_sdiv (UWtype *rp __attribute__ ((__unused__)),
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#endif
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#ifdef L_clz
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const UQItype __clz_tab[] =
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const UQItype __clz_tab[256] =
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{
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0,1,2,2,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
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6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
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@ -657,7 +657,7 @@ const UQItype __clz_tab[] =
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8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
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8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
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8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
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8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
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8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8
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};
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#endif
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@ -731,7 +731,7 @@ extern const UQItype __popcount_tab[] ATTRIBUTE_HIDDEN;
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#endif
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#ifdef L_popcount_tab
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const UQItype __popcount_tab[] =
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const UQItype __popcount_tab[256] =
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{
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0,1,1,2,1,2,2,3,1,2,2,3,2,3,3,4,1,2,2,3,2,3,3,4,2,3,3,4,3,4,4,5,
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1,2,2,3,2,3,3,4,2,3,3,4,3,4,4,5,2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,
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@ -740,7 +740,7 @@ const UQItype __popcount_tab[] =
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1,2,2,3,2,3,3,4,2,3,3,4,3,4,4,5,2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,
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2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,3,4,4,5,4,5,5,6,4,5,5,6,5,6,6,7,
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2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,3,4,4,5,4,5,5,6,4,5,5,6,5,6,6,7,
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3,4,4,5,4,5,5,6,4,5,5,6,5,6,6,7,4,5,5,6,5,6,6,7,5,6,6,7,6,7,7,8,
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3,4,4,5,4,5,5,6,4,5,5,6,5,6,6,7,4,5,5,6,5,6,6,7,5,6,6,7,6,7,7,8
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};
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#endif
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@ -373,6 +373,16 @@ typedef union
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DWtype ll;
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} DWunion;
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/* Defined for L_popcount_tab. Exported here because some targets may
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want to use it for their own versions of the __popcount builtins. */
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extern const UQItype __popcount_tab[256];
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/* Defined for L_clz. Exported here because some targets may want to use
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it for their own versions of the __clz builtins. It contains the bit
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position of the first set bit for the numbers 0 - 255. This avoids the
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need for a seperate table for the __ctz builtins. */
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extern const UQItype __clz_tab[256];
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#include "longlong.h"
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#undef int
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@ -1,6 +1,6 @@
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/* longlong.h -- definitions for mixed size 32/64 bit arithmetic.
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Copyright (C) 1991, 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2004
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Free Software Foundation, Inc.
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Copyright (C) 1991, 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2004,
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2005 Free Software Foundation, Inc.
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This definition file is free software; you can redistribute it
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and/or modify it under the terms of the GNU General Public
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@ -29,8 +29,7 @@
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DItype, UDItype -- Signed and unsigned 64 bit types.
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On a 32 bit machine UWtype should typically be USItype;
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on a 64 bit machine, UWtype should typically be UDItype.
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*/
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on a 64 bit machine, UWtype should typically be UDItype. */
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#define __BITS4 (W_TYPE_SIZE / 4)
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#define __ll_B ((UWtype) 1 << (W_TYPE_SIZE / 2))
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@ -42,6 +41,7 @@
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#define UWtype USItype
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#define UHWtype USItype
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#define UDWtype UDItype
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extern const UQItype __clz_tab[256] ATTRIBUTE_HIDDEN;
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#endif
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/* Define auxiliary asm macros.
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@ -129,7 +129,6 @@ extern UDItype __udiv_qrnnd (UDItype *, UDItype, UDItype, UDItype);
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#define count_trailing_zeros(COUNT,X) ((COUNT) = __builtin_ctzl (X))
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#define COUNT_LEADING_ZEROS_0 64
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#else
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extern const UQItype __clz_tab[] ATTRIBUTE_HIDDEN;
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#define count_leading_zeros(COUNT,X) \
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do { \
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UDItype __xr = (X), __t, __a; \
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@ -1312,7 +1311,6 @@ UDItype __umulsidi3 (USItype, USItype);
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#endif
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#if !defined (count_leading_zeros)
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extern const UQItype __clz_tab[] ATTRIBUTE_HIDDEN;
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#define count_leading_zeros(count, x) \
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do { \
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UWtype __xr = (x); \
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