GCN libgcc.
This patch contains the GCN port of libgcc. 2019-01-17 Andrew Stubbs <ams@codesourcery.com> Kwok Cheung Yeung <kcy@codesourcery.com> Julian Brown <julian@codesourcery.com> Tom de Vries <tom@codesourcery.com> libgcc/ * config.host: Recognize amdgcn*-*-amdhsa. * config/gcn/crt0.c: New file. * config/gcn/lib2-divmod-hi.c: New file. * config/gcn/lib2-divmod.c: New file. * config/gcn/lib2-gcn.h: New file. * config/gcn/sfp-machine.h: New file. * config/gcn/t-amdgcn: New file. Co-Authored-By: Julian Brown <julian@codesourcery.com> Co-Authored-By: Kwok Cheung Yeung <kcy@codesourcery.com> Co-Authored-By: Tom de Vries <tom@codesourcery.com> From-SVN: r268021
This commit is contained in:
Andrew Stubbs
Andrew Stubbs
parent
5ab99fa41c
commit
91d7b7fe84
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@ -1,3 +1,16 @@
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2019-01-17 Andrew Stubbs <ams@codesourcery.com>
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Kwok Cheung Yeung <kcy@codesourcery.com>
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Julian Brown <julian@codesourcery.com>
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Tom de Vries <tom@codesourcery.com>
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* config.host: Recognize amdgcn*-*-amdhsa.
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* config/gcn/crt0.c: New file.
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* config/gcn/lib2-divmod-hi.c: New file.
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* config/gcn/lib2-divmod.c: New file.
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* config/gcn/lib2-gcn.h: New file.
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* config/gcn/sfp-machine.h: New file.
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* config/gcn/t-amdgcn: New file.
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2019-01-09 Sandra Loosemore <sandra@codesourcery.com>
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PR other/16615
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@ -91,6 +91,10 @@ alpha*-*-*)
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am33_2.0-*-linux*)
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cpu_type=mn10300
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;;
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amdgcn*-*-*)
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cpu_type=gcn
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tmake_file="${tmake_file} t-softfp-sfdf t-softfp"
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;;
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arc*-*-*)
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cpu_type=arc
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;;
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@ -387,6 +391,10 @@ alpha*-dec-*vms*)
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extra_parts="$extra_parts vms-dwarf2.o vms-dwarf2eh.o"
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md_unwind_header=alpha/vms-unwind.h
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;;
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amdgcn*-*-amdhsa)
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tmake_file="$tmake_file gcn/t-amdgcn"
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extra_parts="crt0.o"
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;;
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arc*-*-elf*)
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tmake_file="arc/t-arc"
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extra_parts="crti.o crtn.o crtend.o crtbegin.o crtendS.o crtbeginS.o"
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@ -0,0 +1,23 @@
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/* Copyright (C) 2017-2019 Free Software Foundation, Inc.
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This file is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 3, or (at your option) any
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later version.
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This file is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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/* Provide an entry point symbol to silence a linker warning. */
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void _start() {}
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@ -0,0 +1,117 @@
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/* Copyright (C) 2012-2019 Free Software Foundation, Inc.
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Contributed by Altera and Mentor Graphics, Inc.
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This file is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 3, or (at your option) any
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later version.
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This file is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#include "lib2-gcn.h"
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/* 16-bit HI divide and modulo as used in gcn. */
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static UHItype
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udivmodhi4 (UHItype num, UHItype den, word_type modwanted)
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{
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UHItype bit = 1;
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UHItype res = 0;
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while (den < num && bit && !(den & (1L<<15)))
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{
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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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if (num >= den)
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{
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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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}
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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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HItype
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__divhi3 (HItype a, HItype b)
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{
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word_type neg = 0;
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HItype res;
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if (a < 0)
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{
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a = -a;
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neg = !neg;
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}
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if (b < 0)
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{
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b = -b;
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neg = !neg;
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}
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res = udivmodhi4 (a, b, 0);
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if (neg)
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res = -res;
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return res;
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}
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HItype
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__modhi3 (HItype a, HItype b)
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{
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word_type neg = 0;
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HItype res;
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if (a < 0)
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{
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a = -a;
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neg = 1;
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}
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if (b < 0)
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b = -b;
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res = udivmodhi4 (a, b, 1);
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if (neg)
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res = -res;
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return res;
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}
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UHItype
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__udivhi3 (UHItype a, UHItype b)
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{
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return udivmodhi4 (a, b, 0);
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}
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UHItype
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__umodhi3 (UHItype a, UHItype b)
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{
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return udivmodhi4 (a, b, 1);
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}
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@ -0,0 +1,117 @@
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/* Copyright (C) 2012-2019 Free Software Foundation, Inc.
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Contributed by Altera and Mentor Graphics, Inc.
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This file is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 3, or (at your option) any
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later version.
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This file is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#include "lib2-gcn.h"
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/* 32-bit SI divide and modulo as used in gcn. */
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static USItype
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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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{
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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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if (num >= den)
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{
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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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}
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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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word_type neg = 0;
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SItype res;
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if (a < 0)
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{
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a = -a;
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neg = !neg;
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}
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if (b < 0)
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{
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b = -b;
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neg = !neg;
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}
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res = udivmodsi4 (a, b, 0);
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if (neg)
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res = -res;
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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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word_type neg = 0;
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SItype res;
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if (a < 0)
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{
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a = -a;
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neg = 1;
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}
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if (b < 0)
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b = -b;
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res = udivmodsi4 (a, b, 1);
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if (neg)
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res = -res;
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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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return udivmodsi4 (a, b, 1);
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}
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@ -0,0 +1,49 @@
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/* Integer arithmetic support for gcn.
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Copyright (C) 2012-2019 Free Software Foundation, Inc.
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Contributed by Altera and Mentor Graphics, Inc.
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This file is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 3, or (at your option) any
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later version.
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This file is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef LIB2_GCN_H
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#define LIB2_GCN_H
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/* Types. */
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typedef char QItype __attribute__ ((mode (QI)));
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typedef unsigned char UQItype __attribute__ ((mode (QI)));
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typedef short HItype __attribute__ ((mode (HI)));
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typedef unsigned short UHItype __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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typedef int word_type __attribute__ ((mode (__word__)));
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/* Exported functions. */
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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 HItype __divhi3 (HItype, HItype);
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extern HItype __modhi3 (HItype, HItype);
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extern UHItype __udivhi3 (UHItype, UHItype);
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extern UHItype __umodhi3 (UHItype, UHItype);
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extern SItype __mulsi3 (SItype, SItype);
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#endif /* LIB2_GCN_H */
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@ -0,0 +1,51 @@
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/* Use 32-bit types here to prevent longlong.h trying to use TImode.
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Once TImode works we might be better to use 64-bit here. */
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#define _FP_W_TYPE_SIZE 32
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#define _FP_W_TYPE unsigned int
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#define _FP_WS_TYPE signed int
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#define _FP_I_TYPE int
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#define _FP_MUL_MEAT_S(R,X,Y) \
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_FP_MUL_MEAT_1_wide(_FP_WFRACBITS_S,R,X,Y,umul_ppmm)
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#define _FP_MUL_MEAT_D(R,X,Y) \
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_FP_MUL_MEAT_2_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm)
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#define _FP_DIV_MEAT_S(R,X,Y) _FP_DIV_MEAT_1_loop(S,R,X,Y)
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#define _FP_DIV_MEAT_D(R,X,Y) _FP_DIV_MEAT_2_udiv(D,R,X,Y)
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#define _FP_NANFRAC_S ((_FP_QNANBIT_S << 1) - 1)
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#define _FP_NANFRAC_D ((_FP_QNANBIT_D << 1) - 1), -1
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#define _FP_NANSIGN_S 0
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#define _FP_NANSIGN_D 0
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#define _FP_KEEPNANFRACP 1
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#define _FP_QNANNEGATEDP 0
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/* Someone please check this. */
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#define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \
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do { \
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if ((_FP_FRAC_HIGH_RAW_##fs(X) & _FP_QNANBIT_##fs) \
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&& !(_FP_FRAC_HIGH_RAW_##fs(Y) & _FP_QNANBIT_##fs)) \
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{ \
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R##_s = Y##_s; \
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_FP_FRAC_COPY_##wc(R,Y); \
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} \
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else \
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{ \
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R##_s = X##_s; \
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_FP_FRAC_COPY_##wc(R,X); \
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} \
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R##_c = FP_CLS_NAN; \
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} while (0)
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#define _FP_TININESS_AFTER_ROUNDING 0
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#define __LITTLE_ENDIAN 1234
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#define __BIG_ENDIAN 4321
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#define __BYTE_ORDER __LITTLE_ENDIAN
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/* Define ALIASNAME as a strong alias for NAME. */
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# define strong_alias(name, aliasname) _strong_alias(name, aliasname)
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# define _strong_alias(name, aliasname) \
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extern __typeof (name) aliasname __attribute__ ((alias (#name)));
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@ -0,0 +1,16 @@
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LIB2ADD += $(srcdir)/config/gcn/lib2-divmod.c \
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$(srcdir)/config/gcn/lib2-divmod-hi.c
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LIB2ADDEH=
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LIB2FUNCS_EXCLUDE=__main
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override LIB2FUNCS_ST := $(filter-out __gcc_bcmp,$(LIB2FUNCS_ST))
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# Debug information is not useful, and probably uses broken relocations
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LIBGCC2_DEBUG_CFLAGS = -g0
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crt0.o: $(srcdir)/config/gcn/crt0.c
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$(crt_compile) -c $<
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# Prevent building "advanced" stuff (for example, gcov support).
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INHIBIT_LIBC_CFLAGS = -Dinhibit_libc
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Reference in New Issue