1985 lines
41 KiB
C
1985 lines
41 KiB
C
/* More subroutines needed by GCC output code on some machines. */
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/* Compile this one with gcc. */
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/* Copyright (C) 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
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2000, 2001, 2002 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, 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA. */
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/* It is incorrect to include config.h here, because this file is being
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compiled for the target, and hence definitions concerning only the host
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do not apply. */
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#include "tconfig.h"
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#include "tsystem.h"
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/* Don't use `fancy_abort' here even if config.h says to use it. */
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#ifdef abort
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#undef abort
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#endif
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#include "libgcc2.h"
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#ifdef DECLARE_LIBRARY_RENAMES
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DECLARE_LIBRARY_RENAMES
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#endif
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#if defined (L_negdi2)
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DWtype
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__negdi2 (DWtype u)
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{
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DWunion w;
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DWunion uu;
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uu.ll = u;
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w.s.low = -uu.s.low;
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w.s.high = -uu.s.high - ((UWtype) w.s.low > 0);
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return w.ll;
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}
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#endif
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#ifdef L_addvsi3
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Wtype
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__addvsi3 (Wtype a, Wtype b)
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{
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Wtype w;
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w = a + b;
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if (b >= 0 ? w < a : w > a)
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abort ();
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return w;
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}
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#endif
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#ifdef L_addvdi3
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DWtype
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__addvdi3 (DWtype a, DWtype b)
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{
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DWtype w;
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w = a + b;
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if (b >= 0 ? w < a : w > a)
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abort ();
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return w;
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}
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#endif
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#ifdef L_subvsi3
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Wtype
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__subvsi3 (Wtype a, Wtype b)
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{
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#ifdef L_addvsi3
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return __addvsi3 (a, (-b));
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#else
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DWtype w;
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w = a - b;
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if (b >= 0 ? w > a : w < a)
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abort ();
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return w;
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#endif
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}
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#endif
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#ifdef L_subvdi3
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DWtype
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__subvdi3 (DWtype a, DWtype b)
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{
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#ifdef L_addvdi3
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return (a, (-b));
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#else
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DWtype w;
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w = a - b;
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if (b >= 0 ? w > a : w < a)
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abort ();
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return w;
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#endif
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}
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#endif
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#ifdef L_mulvsi3
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Wtype
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__mulvsi3 (Wtype a, Wtype b)
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{
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DWtype w;
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w = a * b;
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if (((a >= 0) == (b >= 0)) ? w < 0 : w > 0)
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abort ();
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return w;
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}
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#endif
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#ifdef L_negvsi2
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Wtype
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__negvsi2 (Wtype a)
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{
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Wtype w;
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w = -a;
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if (a >= 0 ? w > 0 : w < 0)
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abort ();
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return w;
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}
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#endif
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#ifdef L_negvdi2
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DWtype
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__negvdi2 (DWtype a)
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{
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DWtype w;
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w = -a;
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if (a >= 0 ? w > 0 : w < 0)
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abort ();
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return w;
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}
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#endif
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#ifdef L_absvsi2
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Wtype
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__absvsi2 (Wtype a)
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{
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Wtype w = a;
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if (a < 0)
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#ifdef L_negvsi2
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w = __negvsi2 (a);
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#else
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w = -a;
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if (w < 0)
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abort ();
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#endif
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return w;
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}
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#endif
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#ifdef L_absvdi2
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DWtype
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__absvdi2 (DWtype a)
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{
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DWtype w = a;
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if (a < 0)
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#ifdef L_negvsi2
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w = __negvsi2 (a);
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#else
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w = -a;
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if (w < 0)
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abort ();
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#endif
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return w;
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}
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#endif
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#ifdef L_mulvdi3
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DWtype
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__mulvdi3 (DWtype u, DWtype v)
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{
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DWtype w;
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w = u * v;
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if (((u >= 0) == (v >= 0)) ? w < 0 : w > 0)
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abort ();
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return w;
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}
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#endif
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/* Unless shift functions are defined whith full ANSI prototypes,
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parameter b will be promoted to int if word_type is smaller than an int. */
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#ifdef L_lshrdi3
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DWtype
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__lshrdi3 (DWtype u, word_type b)
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{
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DWunion w;
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word_type bm;
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DWunion uu;
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if (b == 0)
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return u;
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uu.ll = u;
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bm = (sizeof (Wtype) * BITS_PER_UNIT) - b;
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if (bm <= 0)
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{
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w.s.high = 0;
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w.s.low = (UWtype) uu.s.high >> -bm;
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}
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else
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{
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UWtype carries = (UWtype) uu.s.high << bm;
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w.s.high = (UWtype) uu.s.high >> b;
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w.s.low = ((UWtype) uu.s.low >> b) | carries;
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}
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return w.ll;
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}
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#endif
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#ifdef L_ashldi3
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DWtype
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__ashldi3 (DWtype u, word_type b)
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{
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DWunion w;
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word_type bm;
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DWunion uu;
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if (b == 0)
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return u;
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uu.ll = u;
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bm = (sizeof (Wtype) * BITS_PER_UNIT) - b;
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if (bm <= 0)
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{
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w.s.low = 0;
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w.s.high = (UWtype) uu.s.low << -bm;
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}
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else
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{
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UWtype carries = (UWtype) uu.s.low >> bm;
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w.s.low = (UWtype) uu.s.low << b;
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w.s.high = ((UWtype) uu.s.high << b) | carries;
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}
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return w.ll;
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}
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#endif
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#ifdef L_ashrdi3
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DWtype
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__ashrdi3 (DWtype u, word_type b)
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{
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DWunion w;
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word_type bm;
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DWunion uu;
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if (b == 0)
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return u;
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uu.ll = u;
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bm = (sizeof (Wtype) * BITS_PER_UNIT) - b;
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if (bm <= 0)
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{
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/* w.s.high = 1..1 or 0..0 */
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w.s.high = uu.s.high >> (sizeof (Wtype) * BITS_PER_UNIT - 1);
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w.s.low = uu.s.high >> -bm;
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}
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else
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{
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UWtype carries = (UWtype) uu.s.high << bm;
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w.s.high = uu.s.high >> b;
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w.s.low = ((UWtype) uu.s.low >> b) | carries;
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}
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return w.ll;
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}
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#endif
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#ifdef L_ffsdi2
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DWtype
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__ffsdi2 (DWtype u)
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{
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DWunion uu;
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UWtype word, count, add;
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uu.ll = u;
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if (uu.s.low != 0)
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word = uu.s.low, add = 0;
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else if (uu.s.high != 0)
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word = uu.s.high, add = BITS_PER_UNIT * sizeof (Wtype);
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else
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return 0;
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count_trailing_zeros (count, word);
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return count + add + 1;
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}
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#endif
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#ifdef L_muldi3
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DWtype
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__muldi3 (DWtype u, DWtype v)
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{
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DWunion w;
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DWunion uu, vv;
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uu.ll = u,
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vv.ll = v;
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w.ll = __umulsidi3 (uu.s.low, vv.s.low);
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w.s.high += ((UWtype) uu.s.low * (UWtype) vv.s.high
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+ (UWtype) uu.s.high * (UWtype) vv.s.low);
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return w.ll;
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}
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#endif
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#ifdef L_udiv_w_sdiv
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#if defined (sdiv_qrnnd)
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UWtype
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__udiv_w_sdiv (UWtype *rp, UWtype a1, UWtype a0, UWtype d)
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{
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UWtype q, r;
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UWtype c0, c1, b1;
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if ((Wtype) d >= 0)
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{
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if (a1 < d - a1 - (a0 >> (W_TYPE_SIZE - 1)))
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{
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/* dividend, divisor, and quotient are nonnegative */
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sdiv_qrnnd (q, r, a1, a0, d);
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}
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else
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{
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/* Compute c1*2^32 + c0 = a1*2^32 + a0 - 2^31*d */
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sub_ddmmss (c1, c0, a1, a0, d >> 1, d << (W_TYPE_SIZE - 1));
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/* Divide (c1*2^32 + c0) by d */
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sdiv_qrnnd (q, r, c1, c0, d);
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/* Add 2^31 to quotient */
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q += (UWtype) 1 << (W_TYPE_SIZE - 1);
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}
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}
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else
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{
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b1 = d >> 1; /* d/2, between 2^30 and 2^31 - 1 */
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c1 = a1 >> 1; /* A/2 */
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c0 = (a1 << (W_TYPE_SIZE - 1)) + (a0 >> 1);
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if (a1 < b1) /* A < 2^32*b1, so A/2 < 2^31*b1 */
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{
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sdiv_qrnnd (q, r, c1, c0, b1); /* (A/2) / (d/2) */
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r = 2*r + (a0 & 1); /* Remainder from A/(2*b1) */
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if ((d & 1) != 0)
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{
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if (r >= q)
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r = r - q;
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else if (q - r <= d)
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{
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r = r - q + d;
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q--;
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}
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else
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{
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r = r - q + 2*d;
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q -= 2;
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}
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}
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}
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else if (c1 < b1) /* So 2^31 <= (A/2)/b1 < 2^32 */
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{
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c1 = (b1 - 1) - c1;
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c0 = ~c0; /* logical NOT */
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sdiv_qrnnd (q, r, c1, c0, b1); /* (A/2) / (d/2) */
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q = ~q; /* (A/2)/b1 */
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r = (b1 - 1) - r;
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r = 2*r + (a0 & 1); /* A/(2*b1) */
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if ((d & 1) != 0)
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{
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if (r >= q)
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r = r - q;
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else if (q - r <= d)
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{
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r = r - q + d;
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q--;
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}
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else
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{
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r = r - q + 2*d;
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q -= 2;
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}
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}
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}
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else /* Implies c1 = b1 */
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{ /* Hence a1 = d - 1 = 2*b1 - 1 */
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if (a0 >= -d)
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{
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q = -1;
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r = a0 + d;
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}
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else
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{
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q = -2;
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r = a0 + 2*d;
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}
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}
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}
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*rp = r;
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return q;
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}
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#else
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/* If sdiv_qrnnd doesn't exist, define dummy __udiv_w_sdiv. */
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UWtype
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__udiv_w_sdiv (UWtype *rp __attribute__ ((__unused__)),
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UWtype a1 __attribute__ ((__unused__)),
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UWtype a0 __attribute__ ((__unused__)),
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UWtype d __attribute__ ((__unused__)))
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{
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return 0;
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}
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#endif
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#endif
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#if (defined (L_udivdi3) || defined (L_divdi3) || \
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defined (L_umoddi3) || defined (L_moddi3))
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#define L_udivmoddi4
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#endif
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#ifdef L_clz
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const UQItype __clz_tab[] =
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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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7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
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7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
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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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#ifdef L_udivmoddi4
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#if (defined (L_udivdi3) || defined (L_divdi3) || \
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defined (L_umoddi3) || defined (L_moddi3))
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static inline
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#endif
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UDWtype
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__udivmoddi4 (UDWtype n, UDWtype d, UDWtype *rp)
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{
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DWunion ww;
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DWunion nn, dd;
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DWunion rr;
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UWtype d0, d1, n0, n1, n2;
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UWtype q0, q1;
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UWtype b, bm;
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nn.ll = n;
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dd.ll = d;
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d0 = dd.s.low;
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d1 = dd.s.high;
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n0 = nn.s.low;
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n1 = nn.s.high;
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#if !UDIV_NEEDS_NORMALIZATION
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if (d1 == 0)
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{
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if (d0 > n1)
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{
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/* 0q = nn / 0D */
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udiv_qrnnd (q0, n0, n1, n0, d0);
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q1 = 0;
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/* Remainder in n0. */
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}
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else
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{
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/* qq = NN / 0d */
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if (d0 == 0)
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d0 = 1 / d0; /* Divide intentionally by zero. */
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udiv_qrnnd (q1, n1, 0, n1, d0);
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udiv_qrnnd (q0, n0, n1, n0, d0);
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/* Remainder in n0. */
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}
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if (rp != 0)
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{
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rr.s.low = n0;
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rr.s.high = 0;
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*rp = rr.ll;
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}
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}
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#else /* UDIV_NEEDS_NORMALIZATION */
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if (d1 == 0)
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{
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if (d0 > n1)
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{
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/* 0q = nn / 0D */
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count_leading_zeros (bm, d0);
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|
||
if (bm != 0)
|
||
{
|
||
/* Normalize, i.e. make the most significant bit of the
|
||
denominator set. */
|
||
|
||
d0 = d0 << bm;
|
||
n1 = (n1 << bm) | (n0 >> (W_TYPE_SIZE - bm));
|
||
n0 = n0 << bm;
|
||
}
|
||
|
||
udiv_qrnnd (q0, n0, n1, n0, d0);
|
||
q1 = 0;
|
||
|
||
/* Remainder in n0 >> bm. */
|
||
}
|
||
else
|
||
{
|
||
/* qq = NN / 0d */
|
||
|
||
if (d0 == 0)
|
||
d0 = 1 / d0; /* Divide intentionally by zero. */
|
||
|
||
count_leading_zeros (bm, d0);
|
||
|
||
if (bm == 0)
|
||
{
|
||
/* From (n1 >= d0) /\ (the most significant bit of d0 is set),
|
||
conclude (the most significant bit of n1 is set) /\ (the
|
||
leading quotient digit q1 = 1).
|
||
|
||
This special case is necessary, not an optimization.
|
||
(Shifts counts of W_TYPE_SIZE are undefined.) */
|
||
|
||
n1 -= d0;
|
||
q1 = 1;
|
||
}
|
||
else
|
||
{
|
||
/* Normalize. */
|
||
|
||
b = W_TYPE_SIZE - bm;
|
||
|
||
d0 = d0 << bm;
|
||
n2 = n1 >> b;
|
||
n1 = (n1 << bm) | (n0 >> b);
|
||
n0 = n0 << bm;
|
||
|
||
udiv_qrnnd (q1, n1, n2, n1, d0);
|
||
}
|
||
|
||
/* n1 != d0... */
|
||
|
||
udiv_qrnnd (q0, n0, n1, n0, d0);
|
||
|
||
/* Remainder in n0 >> bm. */
|
||
}
|
||
|
||
if (rp != 0)
|
||
{
|
||
rr.s.low = n0 >> bm;
|
||
rr.s.high = 0;
|
||
*rp = rr.ll;
|
||
}
|
||
}
|
||
#endif /* UDIV_NEEDS_NORMALIZATION */
|
||
|
||
else
|
||
{
|
||
if (d1 > n1)
|
||
{
|
||
/* 00 = nn / DD */
|
||
|
||
q0 = 0;
|
||
q1 = 0;
|
||
|
||
/* Remainder in n1n0. */
|
||
if (rp != 0)
|
||
{
|
||
rr.s.low = n0;
|
||
rr.s.high = n1;
|
||
*rp = rr.ll;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* 0q = NN / dd */
|
||
|
||
count_leading_zeros (bm, d1);
|
||
if (bm == 0)
|
||
{
|
||
/* From (n1 >= d1) /\ (the most significant bit of d1 is set),
|
||
conclude (the most significant bit of n1 is set) /\ (the
|
||
quotient digit q0 = 0 or 1).
|
||
|
||
This special case is necessary, not an optimization. */
|
||
|
||
/* The condition on the next line takes advantage of that
|
||
n1 >= d1 (true due to program flow). */
|
||
if (n1 > d1 || n0 >= d0)
|
||
{
|
||
q0 = 1;
|
||
sub_ddmmss (n1, n0, n1, n0, d1, d0);
|
||
}
|
||
else
|
||
q0 = 0;
|
||
|
||
q1 = 0;
|
||
|
||
if (rp != 0)
|
||
{
|
||
rr.s.low = n0;
|
||
rr.s.high = n1;
|
||
*rp = rr.ll;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
UWtype m1, m0;
|
||
/* Normalize. */
|
||
|
||
b = W_TYPE_SIZE - bm;
|
||
|
||
d1 = (d1 << bm) | (d0 >> b);
|
||
d0 = d0 << bm;
|
||
n2 = n1 >> b;
|
||
n1 = (n1 << bm) | (n0 >> b);
|
||
n0 = n0 << bm;
|
||
|
||
udiv_qrnnd (q0, n1, n2, n1, d1);
|
||
umul_ppmm (m1, m0, q0, d0);
|
||
|
||
if (m1 > n1 || (m1 == n1 && m0 > n0))
|
||
{
|
||
q0--;
|
||
sub_ddmmss (m1, m0, m1, m0, d1, d0);
|
||
}
|
||
|
||
q1 = 0;
|
||
|
||
/* Remainder in (n1n0 - m1m0) >> bm. */
|
||
if (rp != 0)
|
||
{
|
||
sub_ddmmss (n1, n0, n1, n0, m1, m0);
|
||
rr.s.low = (n1 << b) | (n0 >> bm);
|
||
rr.s.high = n1 >> bm;
|
||
*rp = rr.ll;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
ww.s.low = q0;
|
||
ww.s.high = q1;
|
||
return ww.ll;
|
||
}
|
||
#endif
|
||
|
||
#ifdef L_divdi3
|
||
DWtype
|
||
__divdi3 (DWtype u, DWtype v)
|
||
{
|
||
word_type c = 0;
|
||
DWunion uu, vv;
|
||
DWtype w;
|
||
|
||
uu.ll = u;
|
||
vv.ll = v;
|
||
|
||
if (uu.s.high < 0)
|
||
c = ~c,
|
||
uu.ll = -uu.ll;
|
||
if (vv.s.high < 0)
|
||
c = ~c,
|
||
vv.ll = -vv.ll;
|
||
|
||
w = __udivmoddi4 (uu.ll, vv.ll, (UDWtype *) 0);
|
||
if (c)
|
||
w = -w;
|
||
|
||
return w;
|
||
}
|
||
#endif
|
||
|
||
#ifdef L_moddi3
|
||
DWtype
|
||
__moddi3 (DWtype u, DWtype v)
|
||
{
|
||
word_type c = 0;
|
||
DWunion uu, vv;
|
||
DWtype w;
|
||
|
||
uu.ll = u;
|
||
vv.ll = v;
|
||
|
||
if (uu.s.high < 0)
|
||
c = ~c,
|
||
uu.ll = -uu.ll;
|
||
if (vv.s.high < 0)
|
||
vv.ll = -vv.ll;
|
||
|
||
(void) __udivmoddi4 (uu.ll, vv.ll, &w);
|
||
if (c)
|
||
w = -w;
|
||
|
||
return w;
|
||
}
|
||
#endif
|
||
|
||
#ifdef L_umoddi3
|
||
UDWtype
|
||
__umoddi3 (UDWtype u, UDWtype v)
|
||
{
|
||
UDWtype w;
|
||
|
||
(void) __udivmoddi4 (u, v, &w);
|
||
|
||
return w;
|
||
}
|
||
#endif
|
||
|
||
#ifdef L_udivdi3
|
||
UDWtype
|
||
__udivdi3 (UDWtype n, UDWtype d)
|
||
{
|
||
return __udivmoddi4 (n, d, (UDWtype *) 0);
|
||
}
|
||
#endif
|
||
|
||
#ifdef L_cmpdi2
|
||
word_type
|
||
__cmpdi2 (DWtype a, DWtype b)
|
||
{
|
||
DWunion au, bu;
|
||
|
||
au.ll = a, bu.ll = b;
|
||
|
||
if (au.s.high < bu.s.high)
|
||
return 0;
|
||
else if (au.s.high > bu.s.high)
|
||
return 2;
|
||
if ((UWtype) au.s.low < (UWtype) bu.s.low)
|
||
return 0;
|
||
else if ((UWtype) au.s.low > (UWtype) bu.s.low)
|
||
return 2;
|
||
return 1;
|
||
}
|
||
#endif
|
||
|
||
#ifdef L_ucmpdi2
|
||
word_type
|
||
__ucmpdi2 (DWtype a, DWtype b)
|
||
{
|
||
DWunion au, bu;
|
||
|
||
au.ll = a, bu.ll = b;
|
||
|
||
if ((UWtype) au.s.high < (UWtype) bu.s.high)
|
||
return 0;
|
||
else if ((UWtype) au.s.high > (UWtype) bu.s.high)
|
||
return 2;
|
||
if ((UWtype) au.s.low < (UWtype) bu.s.low)
|
||
return 0;
|
||
else if ((UWtype) au.s.low > (UWtype) bu.s.low)
|
||
return 2;
|
||
return 1;
|
||
}
|
||
#endif
|
||
|
||
#if defined(L_fixunstfdi) && (LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 128)
|
||
#define WORD_SIZE (sizeof (Wtype) * BITS_PER_UNIT)
|
||
#define HIGH_WORD_COEFF (((UDWtype) 1) << WORD_SIZE)
|
||
|
||
DWtype
|
||
__fixunstfDI (TFtype a)
|
||
{
|
||
TFtype b;
|
||
UDWtype v;
|
||
|
||
if (a < 0)
|
||
return 0;
|
||
|
||
/* Compute high word of result, as a flonum. */
|
||
b = (a / HIGH_WORD_COEFF);
|
||
/* Convert that to fixed (but not to DWtype!),
|
||
and shift it into the high word. */
|
||
v = (UWtype) b;
|
||
v <<= WORD_SIZE;
|
||
/* Remove high part from the TFtype, leaving the low part as flonum. */
|
||
a -= (TFtype)v;
|
||
/* Convert that to fixed (but not to DWtype!) and add it in.
|
||
Sometimes A comes out negative. This is significant, since
|
||
A has more bits than a long int does. */
|
||
if (a < 0)
|
||
v -= (UWtype) (- a);
|
||
else
|
||
v += (UWtype) a;
|
||
return v;
|
||
}
|
||
#endif
|
||
|
||
#if defined(L_fixtfdi) && (LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 128)
|
||
DWtype
|
||
__fixtfdi (TFtype a)
|
||
{
|
||
if (a < 0)
|
||
return - __fixunstfDI (-a);
|
||
return __fixunstfDI (a);
|
||
}
|
||
#endif
|
||
|
||
#if defined(L_fixunsxfdi) && (LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 96)
|
||
#define WORD_SIZE (sizeof (Wtype) * BITS_PER_UNIT)
|
||
#define HIGH_WORD_COEFF (((UDWtype) 1) << WORD_SIZE)
|
||
|
||
DWtype
|
||
__fixunsxfDI (XFtype a)
|
||
{
|
||
XFtype b;
|
||
UDWtype v;
|
||
|
||
if (a < 0)
|
||
return 0;
|
||
|
||
/* Compute high word of result, as a flonum. */
|
||
b = (a / HIGH_WORD_COEFF);
|
||
/* Convert that to fixed (but not to DWtype!),
|
||
and shift it into the high word. */
|
||
v = (UWtype) b;
|
||
v <<= WORD_SIZE;
|
||
/* Remove high part from the XFtype, leaving the low part as flonum. */
|
||
a -= (XFtype)v;
|
||
/* Convert that to fixed (but not to DWtype!) and add it in.
|
||
Sometimes A comes out negative. This is significant, since
|
||
A has more bits than a long int does. */
|
||
if (a < 0)
|
||
v -= (UWtype) (- a);
|
||
else
|
||
v += (UWtype) a;
|
||
return v;
|
||
}
|
||
#endif
|
||
|
||
#if defined(L_fixxfdi) && (LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 96)
|
||
DWtype
|
||
__fixxfdi (XFtype a)
|
||
{
|
||
if (a < 0)
|
||
return - __fixunsxfDI (-a);
|
||
return __fixunsxfDI (a);
|
||
}
|
||
#endif
|
||
|
||
#ifdef L_fixunsdfdi
|
||
#define WORD_SIZE (sizeof (Wtype) * BITS_PER_UNIT)
|
||
#define HIGH_WORD_COEFF (((UDWtype) 1) << WORD_SIZE)
|
||
|
||
DWtype
|
||
__fixunsdfDI (DFtype a)
|
||
{
|
||
DFtype b;
|
||
UDWtype v;
|
||
|
||
if (a < 0)
|
||
return 0;
|
||
|
||
/* Compute high word of result, as a flonum. */
|
||
b = (a / HIGH_WORD_COEFF);
|
||
/* Convert that to fixed (but not to DWtype!),
|
||
and shift it into the high word. */
|
||
v = (UWtype) b;
|
||
v <<= WORD_SIZE;
|
||
/* Remove high part from the DFtype, leaving the low part as flonum. */
|
||
a -= (DFtype)v;
|
||
/* Convert that to fixed (but not to DWtype!) and add it in.
|
||
Sometimes A comes out negative. This is significant, since
|
||
A has more bits than a long int does. */
|
||
if (a < 0)
|
||
v -= (UWtype) (- a);
|
||
else
|
||
v += (UWtype) a;
|
||
return v;
|
||
}
|
||
#endif
|
||
|
||
#ifdef L_fixdfdi
|
||
DWtype
|
||
__fixdfdi (DFtype a)
|
||
{
|
||
if (a < 0)
|
||
return - __fixunsdfDI (-a);
|
||
return __fixunsdfDI (a);
|
||
}
|
||
#endif
|
||
|
||
#ifdef L_fixunssfdi
|
||
#define WORD_SIZE (sizeof (Wtype) * BITS_PER_UNIT)
|
||
#define HIGH_WORD_COEFF (((UDWtype) 1) << WORD_SIZE)
|
||
|
||
DWtype
|
||
__fixunssfDI (SFtype original_a)
|
||
{
|
||
/* Convert the SFtype to a DFtype, because that is surely not going
|
||
to lose any bits. Some day someone else can write a faster version
|
||
that avoids converting to DFtype, and verify it really works right. */
|
||
DFtype a = original_a;
|
||
DFtype b;
|
||
UDWtype v;
|
||
|
||
if (a < 0)
|
||
return 0;
|
||
|
||
/* Compute high word of result, as a flonum. */
|
||
b = (a / HIGH_WORD_COEFF);
|
||
/* Convert that to fixed (but not to DWtype!),
|
||
and shift it into the high word. */
|
||
v = (UWtype) b;
|
||
v <<= WORD_SIZE;
|
||
/* Remove high part from the DFtype, leaving the low part as flonum. */
|
||
a -= (DFtype) v;
|
||
/* Convert that to fixed (but not to DWtype!) and add it in.
|
||
Sometimes A comes out negative. This is significant, since
|
||
A has more bits than a long int does. */
|
||
if (a < 0)
|
||
v -= (UWtype) (- a);
|
||
else
|
||
v += (UWtype) a;
|
||
return v;
|
||
}
|
||
#endif
|
||
|
||
#ifdef L_fixsfdi
|
||
DWtype
|
||
__fixsfdi (SFtype a)
|
||
{
|
||
if (a < 0)
|
||
return - __fixunssfDI (-a);
|
||
return __fixunssfDI (a);
|
||
}
|
||
#endif
|
||
|
||
#if defined(L_floatdixf) && (LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 96)
|
||
#define WORD_SIZE (sizeof (Wtype) * BITS_PER_UNIT)
|
||
#define HIGH_HALFWORD_COEFF (((UDWtype) 1) << (WORD_SIZE / 2))
|
||
#define HIGH_WORD_COEFF (((UDWtype) 1) << WORD_SIZE)
|
||
|
||
XFtype
|
||
__floatdixf (DWtype u)
|
||
{
|
||
XFtype d;
|
||
|
||
d = (Wtype) (u >> WORD_SIZE);
|
||
d *= HIGH_HALFWORD_COEFF;
|
||
d *= HIGH_HALFWORD_COEFF;
|
||
d += (UWtype) (u & (HIGH_WORD_COEFF - 1));
|
||
|
||
return d;
|
||
}
|
||
#endif
|
||
|
||
#if defined(L_floatditf) && (LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 128)
|
||
#define WORD_SIZE (sizeof (Wtype) * BITS_PER_UNIT)
|
||
#define HIGH_HALFWORD_COEFF (((UDWtype) 1) << (WORD_SIZE / 2))
|
||
#define HIGH_WORD_COEFF (((UDWtype) 1) << WORD_SIZE)
|
||
|
||
TFtype
|
||
__floatditf (DWtype u)
|
||
{
|
||
TFtype d;
|
||
|
||
d = (Wtype) (u >> WORD_SIZE);
|
||
d *= HIGH_HALFWORD_COEFF;
|
||
d *= HIGH_HALFWORD_COEFF;
|
||
d += (UWtype) (u & (HIGH_WORD_COEFF - 1));
|
||
|
||
return d;
|
||
}
|
||
#endif
|
||
|
||
#ifdef L_floatdidf
|
||
#define WORD_SIZE (sizeof (Wtype) * BITS_PER_UNIT)
|
||
#define HIGH_HALFWORD_COEFF (((UDWtype) 1) << (WORD_SIZE / 2))
|
||
#define HIGH_WORD_COEFF (((UDWtype) 1) << WORD_SIZE)
|
||
|
||
DFtype
|
||
__floatdidf (DWtype u)
|
||
{
|
||
DFtype d;
|
||
|
||
d = (Wtype) (u >> WORD_SIZE);
|
||
d *= HIGH_HALFWORD_COEFF;
|
||
d *= HIGH_HALFWORD_COEFF;
|
||
d += (UWtype) (u & (HIGH_WORD_COEFF - 1));
|
||
|
||
return d;
|
||
}
|
||
#endif
|
||
|
||
#ifdef L_floatdisf
|
||
#define WORD_SIZE (sizeof (Wtype) * BITS_PER_UNIT)
|
||
#define HIGH_HALFWORD_COEFF (((UDWtype) 1) << (WORD_SIZE / 2))
|
||
#define HIGH_WORD_COEFF (((UDWtype) 1) << WORD_SIZE)
|
||
|
||
#define DI_SIZE (sizeof (DWtype) * BITS_PER_UNIT)
|
||
#define DF_SIZE DBL_MANT_DIG
|
||
#define SF_SIZE FLT_MANT_DIG
|
||
|
||
SFtype
|
||
__floatdisf (DWtype u)
|
||
{
|
||
/* Do the calculation in DFmode
|
||
so that we don't lose any of the precision of the high word
|
||
while multiplying it. */
|
||
DFtype f;
|
||
|
||
/* Protect against double-rounding error.
|
||
Represent any low-order bits, that might be truncated in DFmode,
|
||
by a bit that won't be lost. The bit can go in anywhere below the
|
||
rounding position of the SFmode. A fixed mask and bit position
|
||
handles all usual configurations. It doesn't handle the case
|
||
of 128-bit DImode, however. */
|
||
if (DF_SIZE < DI_SIZE
|
||
&& DF_SIZE > (DI_SIZE - DF_SIZE + SF_SIZE))
|
||
{
|
||
#define REP_BIT ((UDWtype) 1 << (DI_SIZE - DF_SIZE))
|
||
if (! (- ((DWtype) 1 << DF_SIZE) < u
|
||
&& u < ((DWtype) 1 << DF_SIZE)))
|
||
{
|
||
if ((UDWtype) u & (REP_BIT - 1))
|
||
{
|
||
u &= ~ (REP_BIT - 1);
|
||
u |= REP_BIT;
|
||
}
|
||
}
|
||
}
|
||
f = (Wtype) (u >> WORD_SIZE);
|
||
f *= HIGH_HALFWORD_COEFF;
|
||
f *= HIGH_HALFWORD_COEFF;
|
||
f += (UWtype) (u & (HIGH_WORD_COEFF - 1));
|
||
|
||
return (SFtype) f;
|
||
}
|
||
#endif
|
||
|
||
#if defined(L_fixunsxfsi) && LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 96
|
||
/* Reenable the normal types, in case limits.h needs them. */
|
||
#undef char
|
||
#undef short
|
||
#undef int
|
||
#undef long
|
||
#undef unsigned
|
||
#undef float
|
||
#undef double
|
||
#undef MIN
|
||
#undef MAX
|
||
#include <limits.h>
|
||
|
||
UWtype
|
||
__fixunsxfSI (XFtype a)
|
||
{
|
||
if (a >= - (DFtype) Wtype_MIN)
|
||
return (Wtype) (a + Wtype_MIN) - Wtype_MIN;
|
||
return (Wtype) a;
|
||
}
|
||
#endif
|
||
|
||
#ifdef L_fixunsdfsi
|
||
/* Reenable the normal types, in case limits.h needs them. */
|
||
#undef char
|
||
#undef short
|
||
#undef int
|
||
#undef long
|
||
#undef unsigned
|
||
#undef float
|
||
#undef double
|
||
#undef MIN
|
||
#undef MAX
|
||
#include <limits.h>
|
||
|
||
UWtype
|
||
__fixunsdfSI (DFtype a)
|
||
{
|
||
if (a >= - (DFtype) Wtype_MIN)
|
||
return (Wtype) (a + Wtype_MIN) - Wtype_MIN;
|
||
return (Wtype) a;
|
||
}
|
||
#endif
|
||
|
||
#ifdef L_fixunssfsi
|
||
/* Reenable the normal types, in case limits.h needs them. */
|
||
#undef char
|
||
#undef short
|
||
#undef int
|
||
#undef long
|
||
#undef unsigned
|
||
#undef float
|
||
#undef double
|
||
#undef MIN
|
||
#undef MAX
|
||
#include <limits.h>
|
||
|
||
UWtype
|
||
__fixunssfSI (SFtype a)
|
||
{
|
||
if (a >= - (SFtype) Wtype_MIN)
|
||
return (Wtype) (a + Wtype_MIN) - Wtype_MIN;
|
||
return (Wtype) a;
|
||
}
|
||
#endif
|
||
|
||
/* From here on down, the routines use normal data types. */
|
||
|
||
#define SItype bogus_type
|
||
#define USItype bogus_type
|
||
#define DItype bogus_type
|
||
#define UDItype bogus_type
|
||
#define SFtype bogus_type
|
||
#define DFtype bogus_type
|
||
#undef Wtype
|
||
#undef UWtype
|
||
#undef HWtype
|
||
#undef UHWtype
|
||
#undef DWtype
|
||
#undef UDWtype
|
||
|
||
#undef char
|
||
#undef short
|
||
#undef int
|
||
#undef long
|
||
#undef unsigned
|
||
#undef float
|
||
#undef double
|
||
|
||
#ifdef L__gcc_bcmp
|
||
|
||
/* Like bcmp except the sign is meaningful.
|
||
Result is negative if S1 is less than S2,
|
||
positive if S1 is greater, 0 if S1 and S2 are equal. */
|
||
|
||
int
|
||
__gcc_bcmp (const unsigned char *s1, const unsigned char *s2, size_t size)
|
||
{
|
||
while (size > 0)
|
||
{
|
||
unsigned char c1 = *s1++, c2 = *s2++;
|
||
if (c1 != c2)
|
||
return c1 - c2;
|
||
size--;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
#endif
|
||
|
||
/* __eprintf used to be used by GCC's private version of <assert.h>.
|
||
We no longer provide that header, but this routine remains in libgcc.a
|
||
for binary backward compatibility. Note that it is not included in
|
||
the shared version of libgcc. */
|
||
#ifdef L_eprintf
|
||
#ifndef inhibit_libc
|
||
|
||
#undef NULL /* Avoid errors if stdio.h and our stddef.h mismatch. */
|
||
#include <stdio.h>
|
||
|
||
void
|
||
__eprintf (const char *string, const char *expression,
|
||
unsigned int line, const char *filename)
|
||
{
|
||
fprintf (stderr, string, expression, line, filename);
|
||
fflush (stderr);
|
||
abort ();
|
||
}
|
||
|
||
#endif
|
||
#endif
|
||
|
||
#ifdef L_bb
|
||
|
||
struct bb_function_info {
|
||
long checksum;
|
||
int arc_count;
|
||
const char *name;
|
||
};
|
||
|
||
/* Structure emitted by --profile-arcs */
|
||
struct bb
|
||
{
|
||
long zero_word;
|
||
const char *filename;
|
||
gcov_type *counts;
|
||
long ncounts;
|
||
struct bb *next;
|
||
|
||
/* Older GCC's did not emit these fields. */
|
||
long sizeof_bb;
|
||
struct bb_function_info *function_infos;
|
||
};
|
||
|
||
#ifndef inhibit_libc
|
||
|
||
/* Arc profile dumper. Requires atexit and stdio. */
|
||
|
||
#undef NULL /* Avoid errors if stdio.h and our stddef.h mismatch. */
|
||
#include <stdio.h>
|
||
|
||
#include "gcov-io.h"
|
||
#include <string.h>
|
||
#ifdef TARGET_HAS_F_SETLKW
|
||
#include <fcntl.h>
|
||
#include <errno.h>
|
||
#endif
|
||
|
||
/* Chain of per-object file bb structures. */
|
||
static struct bb *bb_head;
|
||
|
||
/* Dump the coverage counts. We merge with existing counts when
|
||
possible, to avoid growing the .da files ad infinitum. */
|
||
|
||
void
|
||
__bb_exit_func (void)
|
||
{
|
||
struct bb *ptr;
|
||
int i;
|
||
gcov_type program_sum = 0;
|
||
gcov_type program_max = 0;
|
||
long program_arcs = 0;
|
||
gcov_type merged_sum = 0;
|
||
gcov_type merged_max = 0;
|
||
long merged_arcs = 0;
|
||
|
||
#if defined (TARGET_HAS_F_SETLKW)
|
||
struct flock s_flock;
|
||
|
||
s_flock.l_type = F_WRLCK;
|
||
s_flock.l_whence = SEEK_SET;
|
||
s_flock.l_start = 0;
|
||
s_flock.l_len = 0; /* Until EOF. */
|
||
s_flock.l_pid = getpid ();
|
||
#endif
|
||
|
||
/* Non-merged stats for this program. */
|
||
for (ptr = bb_head; ptr; ptr = ptr->next)
|
||
{
|
||
for (i = 0; i < ptr->ncounts; i++)
|
||
{
|
||
program_sum += ptr->counts[i];
|
||
|
||
if (ptr->counts[i] > program_max)
|
||
program_max = ptr->counts[i];
|
||
}
|
||
program_arcs += ptr->ncounts;
|
||
}
|
||
|
||
for (ptr = bb_head; ptr; ptr = ptr->next)
|
||
{
|
||
FILE *da_file;
|
||
gcov_type object_max = 0;
|
||
gcov_type object_sum = 0;
|
||
long object_functions = 0;
|
||
int merging = 0;
|
||
int error = 0;
|
||
struct bb_function_info *fn_info;
|
||
gcov_type *count_ptr;
|
||
|
||
/* Open for modification */
|
||
da_file = fopen (ptr->filename, "r+b");
|
||
|
||
if (da_file)
|
||
merging = 1;
|
||
else
|
||
{
|
||
/* Try for appending */
|
||
da_file = fopen (ptr->filename, "ab");
|
||
/* Some old systems might not allow the 'b' mode modifier.
|
||
Therefore, try to open without it. This can lead to a
|
||
race condition so that when you delete and re-create the
|
||
file, the file might be opened in text mode, but then,
|
||
you shouldn't delete the file in the first place. */
|
||
if (!da_file)
|
||
da_file = fopen (ptr->filename, "a");
|
||
}
|
||
|
||
if (!da_file)
|
||
{
|
||
fprintf (stderr, "arc profiling: Can't open output file %s.\n",
|
||
ptr->filename);
|
||
ptr->filename = 0;
|
||
continue;
|
||
}
|
||
|
||
#if defined (TARGET_HAS_F_SETLKW)
|
||
/* After a fork, another process might try to read and/or write
|
||
the same file simultanously. So if we can, lock the file to
|
||
avoid race conditions. */
|
||
while (fcntl (fileno (da_file), F_SETLKW, &s_flock)
|
||
&& errno == EINTR)
|
||
continue;
|
||
#endif
|
||
for (fn_info = ptr->function_infos; fn_info->arc_count != -1; fn_info++)
|
||
object_functions++;
|
||
|
||
if (merging)
|
||
{
|
||
/* Merge data from file. */
|
||
long tmp_long;
|
||
gcov_type tmp_gcov;
|
||
|
||
if (/* magic */
|
||
(__read_long (&tmp_long, da_file, 4) || tmp_long != -123l)
|
||
/* functions in object file. */
|
||
|| (__read_long (&tmp_long, da_file, 4)
|
||
|| tmp_long != object_functions)
|
||
/* extension block, skipped */
|
||
|| (__read_long (&tmp_long, da_file, 4)
|
||
|| fseek (da_file, tmp_long, SEEK_CUR)))
|
||
{
|
||
read_error:;
|
||
fprintf (stderr, "arc profiling: Error merging output file %s.\n",
|
||
ptr->filename);
|
||
clearerr (da_file);
|
||
}
|
||
else
|
||
{
|
||
/* Merge execution counts for each function. */
|
||
count_ptr = ptr->counts;
|
||
|
||
for (fn_info = ptr->function_infos; fn_info->arc_count != -1;
|
||
fn_info++)
|
||
{
|
||
if (/* function name delim */
|
||
(__read_long (&tmp_long, da_file, 4)
|
||
|| tmp_long != -1)
|
||
/* function name length */
|
||
|| (__read_long (&tmp_long, da_file, 4)
|
||
|| tmp_long != (long) strlen (fn_info->name))
|
||
/* skip string */
|
||
|| fseek (da_file, ((tmp_long + 1) + 3) & ~3, SEEK_CUR)
|
||
/* function name delim */
|
||
|| (__read_long (&tmp_long, da_file, 4)
|
||
|| tmp_long != -1))
|
||
goto read_error;
|
||
|
||
if (/* function checksum */
|
||
(__read_long (&tmp_long, da_file, 4)
|
||
|| tmp_long != fn_info->checksum)
|
||
/* arc count */
|
||
|| (__read_long (&tmp_long, da_file, 4)
|
||
|| tmp_long != fn_info->arc_count))
|
||
goto read_error;
|
||
|
||
for (i = fn_info->arc_count; i > 0; i--, count_ptr++)
|
||
if (__read_gcov_type (&tmp_gcov, da_file, 8))
|
||
goto read_error;
|
||
else
|
||
*count_ptr += tmp_gcov;
|
||
}
|
||
}
|
||
fseek (da_file, 0, SEEK_SET);
|
||
}
|
||
|
||
/* Calculate the per-object statistics. */
|
||
for (i = 0; i < ptr->ncounts; i++)
|
||
{
|
||
object_sum += ptr->counts[i];
|
||
|
||
if (ptr->counts[i] > object_max)
|
||
object_max = ptr->counts[i];
|
||
}
|
||
merged_sum += object_sum;
|
||
if (merged_max < object_max)
|
||
merged_max = object_max;
|
||
merged_arcs += ptr->ncounts;
|
||
|
||
/* Write out the data. */
|
||
if (/* magic */
|
||
__write_long (-123, da_file, 4)
|
||
/* number of functions in object file. */
|
||
|| __write_long (object_functions, da_file, 4)
|
||
/* length of extra data in bytes. */
|
||
|| __write_long ((4 + 8 + 8) + (4 + 8 + 8), da_file, 4)
|
||
|
||
/* whole program statistics. If merging write per-object
|
||
now, rewrite later */
|
||
/* number of instrumented arcs. */
|
||
|| __write_long (merging ? ptr->ncounts : program_arcs, da_file, 4)
|
||
/* sum of counters. */
|
||
|| __write_gcov_type (merging ? object_sum : program_sum, da_file, 8)
|
||
/* maximal counter. */
|
||
|| __write_gcov_type (merging ? object_max : program_max, da_file, 8)
|
||
|
||
/* per-object statistics. */
|
||
/* number of counters. */
|
||
|| __write_long (ptr->ncounts, da_file, 4)
|
||
/* sum of counters. */
|
||
|| __write_gcov_type (object_sum, da_file, 8)
|
||
/* maximal counter. */
|
||
|| __write_gcov_type (object_max, da_file, 8))
|
||
{
|
||
write_error:;
|
||
fprintf (stderr, "arc profiling: Error writing output file %s.\n",
|
||
ptr->filename);
|
||
error = 1;
|
||
}
|
||
else
|
||
{
|
||
/* Write execution counts for each function. */
|
||
count_ptr = ptr->counts;
|
||
|
||
for (fn_info = ptr->function_infos; fn_info->arc_count != -1;
|
||
fn_info++)
|
||
{
|
||
if (__write_gcov_string (fn_info->name,
|
||
strlen (fn_info->name), da_file, -1)
|
||
|| __write_long (fn_info->checksum, da_file, 4)
|
||
|| __write_long (fn_info->arc_count, da_file, 4))
|
||
goto write_error;
|
||
|
||
for (i = fn_info->arc_count; i > 0; i--, count_ptr++)
|
||
if (__write_gcov_type (*count_ptr, da_file, 8))
|
||
goto write_error; /* RIP Edsger Dijkstra */
|
||
}
|
||
}
|
||
|
||
if (fclose (da_file))
|
||
{
|
||
fprintf (stderr, "arc profiling: Error closing output file %s.\n",
|
||
ptr->filename);
|
||
error = 1;
|
||
}
|
||
if (error || !merging)
|
||
ptr->filename = 0;
|
||
}
|
||
|
||
/* Upate whole program statistics. */
|
||
for (ptr = bb_head; ptr; ptr = ptr->next)
|
||
if (ptr->filename)
|
||
{
|
||
FILE *da_file;
|
||
|
||
da_file = fopen (ptr->filename, "r+b");
|
||
if (!da_file)
|
||
{
|
||
fprintf (stderr, "arc profiling: Cannot reopen %s.\n",
|
||
ptr->filename);
|
||
continue;
|
||
}
|
||
|
||
#if defined (TARGET_HAS_F_SETLKW)
|
||
while (fcntl (fileno (da_file), F_SETLKW, &s_flock)
|
||
&& errno == EINTR)
|
||
continue;
|
||
#endif
|
||
|
||
if (fseek (da_file, 4 * 3, SEEK_SET)
|
||
/* number of instrumented arcs. */
|
||
|| __write_long (merged_arcs, da_file, 4)
|
||
/* sum of counters. */
|
||
|| __write_gcov_type (merged_sum, da_file, 8)
|
||
/* maximal counter. */
|
||
|| __write_gcov_type (merged_max, da_file, 8))
|
||
fprintf (stderr, "arc profiling: Error updating program header %s.\n",
|
||
ptr->filename);
|
||
if (fclose (da_file))
|
||
fprintf (stderr, "arc profiling: Error reclosing %s\n",
|
||
ptr->filename);
|
||
}
|
||
}
|
||
|
||
/* Add a new object file onto the bb chain. Invoked automatically
|
||
when running an object file's global ctors. */
|
||
|
||
void
|
||
__bb_init_func (struct bb *blocks)
|
||
{
|
||
if (blocks->zero_word)
|
||
return;
|
||
|
||
/* Initialize destructor and per-thread data. */
|
||
if (!bb_head)
|
||
atexit (__bb_exit_func);
|
||
|
||
/* Set up linked list. */
|
||
blocks->zero_word = 1;
|
||
blocks->next = bb_head;
|
||
bb_head = blocks;
|
||
}
|
||
|
||
/* Called before fork or exec - write out profile information gathered so
|
||
far and reset it to zero. This avoids duplication or loss of the
|
||
profile information gathered so far. */
|
||
|
||
void
|
||
__bb_fork_func (void)
|
||
{
|
||
struct bb *ptr;
|
||
|
||
__bb_exit_func ();
|
||
for (ptr = bb_head; ptr != (struct bb *) 0; ptr = ptr->next)
|
||
{
|
||
long i;
|
||
for (i = ptr->ncounts - 1; i >= 0; i--)
|
||
ptr->counts[i] = 0;
|
||
}
|
||
}
|
||
|
||
#endif /* not inhibit_libc */
|
||
#endif /* L_bb */
|
||
|
||
#ifdef L_clear_cache
|
||
/* Clear part of an instruction cache. */
|
||
|
||
#define INSN_CACHE_PLANE_SIZE (INSN_CACHE_SIZE / INSN_CACHE_DEPTH)
|
||
|
||
void
|
||
__clear_cache (char *beg __attribute__((__unused__)),
|
||
char *end __attribute__((__unused__)))
|
||
{
|
||
#ifdef CLEAR_INSN_CACHE
|
||
CLEAR_INSN_CACHE (beg, end);
|
||
#else
|
||
#ifdef INSN_CACHE_SIZE
|
||
static char array[INSN_CACHE_SIZE + INSN_CACHE_PLANE_SIZE + INSN_CACHE_LINE_WIDTH];
|
||
static int initialized;
|
||
int offset;
|
||
void *start_addr
|
||
void *end_addr;
|
||
typedef (*function_ptr) (void);
|
||
|
||
#if (INSN_CACHE_SIZE / INSN_CACHE_LINE_WIDTH) < 16
|
||
/* It's cheaper to clear the whole cache.
|
||
Put in a series of jump instructions so that calling the beginning
|
||
of the cache will clear the whole thing. */
|
||
|
||
if (! initialized)
|
||
{
|
||
int ptr = (((int) array + INSN_CACHE_LINE_WIDTH - 1)
|
||
& -INSN_CACHE_LINE_WIDTH);
|
||
int end_ptr = ptr + INSN_CACHE_SIZE;
|
||
|
||
while (ptr < end_ptr)
|
||
{
|
||
*(INSTRUCTION_TYPE *)ptr
|
||
= JUMP_AHEAD_INSTRUCTION + INSN_CACHE_LINE_WIDTH;
|
||
ptr += INSN_CACHE_LINE_WIDTH;
|
||
}
|
||
*(INSTRUCTION_TYPE *) (ptr - INSN_CACHE_LINE_WIDTH) = RETURN_INSTRUCTION;
|
||
|
||
initialized = 1;
|
||
}
|
||
|
||
/* Call the beginning of the sequence. */
|
||
(((function_ptr) (((int) array + INSN_CACHE_LINE_WIDTH - 1)
|
||
& -INSN_CACHE_LINE_WIDTH))
|
||
());
|
||
|
||
#else /* Cache is large. */
|
||
|
||
if (! initialized)
|
||
{
|
||
int ptr = (((int) array + INSN_CACHE_LINE_WIDTH - 1)
|
||
& -INSN_CACHE_LINE_WIDTH);
|
||
|
||
while (ptr < (int) array + sizeof array)
|
||
{
|
||
*(INSTRUCTION_TYPE *)ptr = RETURN_INSTRUCTION;
|
||
ptr += INSN_CACHE_LINE_WIDTH;
|
||
}
|
||
|
||
initialized = 1;
|
||
}
|
||
|
||
/* Find the location in array that occupies the same cache line as BEG. */
|
||
|
||
offset = ((int) beg & -INSN_CACHE_LINE_WIDTH) & (INSN_CACHE_PLANE_SIZE - 1);
|
||
start_addr = (((int) (array + INSN_CACHE_PLANE_SIZE - 1)
|
||
& -INSN_CACHE_PLANE_SIZE)
|
||
+ offset);
|
||
|
||
/* Compute the cache alignment of the place to stop clearing. */
|
||
#if 0 /* This is not needed for gcc's purposes. */
|
||
/* If the block to clear is bigger than a cache plane,
|
||
we clear the entire cache, and OFFSET is already correct. */
|
||
if (end < beg + INSN_CACHE_PLANE_SIZE)
|
||
#endif
|
||
offset = (((int) (end + INSN_CACHE_LINE_WIDTH - 1)
|
||
& -INSN_CACHE_LINE_WIDTH)
|
||
& (INSN_CACHE_PLANE_SIZE - 1));
|
||
|
||
#if INSN_CACHE_DEPTH > 1
|
||
end_addr = (start_addr & -INSN_CACHE_PLANE_SIZE) + offset;
|
||
if (end_addr <= start_addr)
|
||
end_addr += INSN_CACHE_PLANE_SIZE;
|
||
|
||
for (plane = 0; plane < INSN_CACHE_DEPTH; plane++)
|
||
{
|
||
int addr = start_addr + plane * INSN_CACHE_PLANE_SIZE;
|
||
int stop = end_addr + plane * INSN_CACHE_PLANE_SIZE;
|
||
|
||
while (addr != stop)
|
||
{
|
||
/* Call the return instruction at ADDR. */
|
||
((function_ptr) addr) ();
|
||
|
||
addr += INSN_CACHE_LINE_WIDTH;
|
||
}
|
||
}
|
||
#else /* just one plane */
|
||
do
|
||
{
|
||
/* Call the return instruction at START_ADDR. */
|
||
((function_ptr) start_addr) ();
|
||
|
||
start_addr += INSN_CACHE_LINE_WIDTH;
|
||
}
|
||
while ((start_addr % INSN_CACHE_SIZE) != offset);
|
||
#endif /* just one plane */
|
||
#endif /* Cache is large */
|
||
#endif /* Cache exists */
|
||
#endif /* CLEAR_INSN_CACHE */
|
||
}
|
||
|
||
#endif /* L_clear_cache */
|
||
|
||
#ifdef L_trampoline
|
||
|
||
/* Jump to a trampoline, loading the static chain address. */
|
||
|
||
#if defined(WINNT) && ! defined(__CYGWIN__) && ! defined (_UWIN)
|
||
|
||
long
|
||
getpagesize (void)
|
||
{
|
||
#ifdef _ALPHA_
|
||
return 8192;
|
||
#else
|
||
return 4096;
|
||
#endif
|
||
}
|
||
|
||
#ifdef __i386__
|
||
extern int VirtualProtect (char *, int, int, int *) __attribute__((stdcall));
|
||
#endif
|
||
|
||
int
|
||
mprotect (char *addr, int len, int prot)
|
||
{
|
||
int np, op;
|
||
|
||
if (prot == 7)
|
||
np = 0x40;
|
||
else if (prot == 5)
|
||
np = 0x20;
|
||
else if (prot == 4)
|
||
np = 0x10;
|
||
else if (prot == 3)
|
||
np = 0x04;
|
||
else if (prot == 1)
|
||
np = 0x02;
|
||
else if (prot == 0)
|
||
np = 0x01;
|
||
|
||
if (VirtualProtect (addr, len, np, &op))
|
||
return 0;
|
||
else
|
||
return -1;
|
||
}
|
||
|
||
#endif /* WINNT && ! __CYGWIN__ && ! _UWIN */
|
||
|
||
#ifdef TRANSFER_FROM_TRAMPOLINE
|
||
TRANSFER_FROM_TRAMPOLINE
|
||
#endif
|
||
|
||
#ifdef __sysV68__
|
||
|
||
#include <sys/signal.h>
|
||
#include <errno.h>
|
||
|
||
/* Motorola forgot to put memctl.o in the libp version of libc881.a,
|
||
so define it here, because we need it in __clear_insn_cache below */
|
||
/* On older versions of this OS, no memctl or MCT_TEXT are defined;
|
||
hence we enable this stuff only if MCT_TEXT is #define'd. */
|
||
|
||
#ifdef MCT_TEXT
|
||
asm("\n\
|
||
global memctl\n\
|
||
memctl:\n\
|
||
movq &75,%d0\n\
|
||
trap &0\n\
|
||
bcc.b noerror\n\
|
||
jmp cerror%\n\
|
||
noerror:\n\
|
||
movq &0,%d0\n\
|
||
rts");
|
||
#endif
|
||
|
||
/* Clear instruction cache so we can call trampolines on stack.
|
||
This is called from FINALIZE_TRAMPOLINE in mot3300.h. */
|
||
|
||
void
|
||
__clear_insn_cache (void)
|
||
{
|
||
#ifdef MCT_TEXT
|
||
int save_errno;
|
||
|
||
/* Preserve errno, because users would be surprised to have
|
||
errno changing without explicitly calling any system-call. */
|
||
save_errno = errno;
|
||
|
||
/* Keep it simple : memctl (MCT_TEXT) always fully clears the insn cache.
|
||
No need to use an address derived from _start or %sp, as 0 works also. */
|
||
memctl(0, 4096, MCT_TEXT);
|
||
errno = save_errno;
|
||
#endif
|
||
}
|
||
|
||
#endif /* __sysV68__ */
|
||
#endif /* L_trampoline */
|
||
|
||
#ifndef __CYGWIN__
|
||
#ifdef L__main
|
||
|
||
#include "gbl-ctors.h"
|
||
/* Some systems use __main in a way incompatible with its use in gcc, in these
|
||
cases use the macros NAME__MAIN to give a quoted symbol and SYMBOL__MAIN to
|
||
give the same symbol without quotes for an alternative entry point. You
|
||
must define both, or neither. */
|
||
#ifndef NAME__MAIN
|
||
#define NAME__MAIN "__main"
|
||
#define SYMBOL__MAIN __main
|
||
#endif
|
||
|
||
#ifdef INIT_SECTION_ASM_OP
|
||
#undef HAS_INIT_SECTION
|
||
#define HAS_INIT_SECTION
|
||
#endif
|
||
|
||
#if !defined (HAS_INIT_SECTION) || !defined (OBJECT_FORMAT_ELF)
|
||
|
||
/* Some ELF crosses use crtstuff.c to provide __CTOR_LIST__, but use this
|
||
code to run constructors. In that case, we need to handle EH here, too. */
|
||
|
||
#ifdef EH_FRAME_SECTION_NAME
|
||
#include "unwind-dw2-fde.h"
|
||
extern unsigned char __EH_FRAME_BEGIN__[];
|
||
#endif
|
||
|
||
/* Run all the global destructors on exit from the program. */
|
||
|
||
void
|
||
__do_global_dtors (void)
|
||
{
|
||
#ifdef DO_GLOBAL_DTORS_BODY
|
||
DO_GLOBAL_DTORS_BODY;
|
||
#else
|
||
static func_ptr *p = __DTOR_LIST__ + 1;
|
||
while (*p)
|
||
{
|
||
p++;
|
||
(*(p-1)) ();
|
||
}
|
||
#endif
|
||
#if defined (EH_FRAME_SECTION_NAME) && !defined (HAS_INIT_SECTION)
|
||
{
|
||
static int completed = 0;
|
||
if (! completed)
|
||
{
|
||
completed = 1;
|
||
__deregister_frame_info (__EH_FRAME_BEGIN__);
|
||
}
|
||
}
|
||
#endif
|
||
}
|
||
#endif
|
||
|
||
#ifndef HAS_INIT_SECTION
|
||
/* Run all the global constructors on entry to the program. */
|
||
|
||
void
|
||
__do_global_ctors (void)
|
||
{
|
||
#ifdef EH_FRAME_SECTION_NAME
|
||
{
|
||
static struct object object;
|
||
__register_frame_info (__EH_FRAME_BEGIN__, &object);
|
||
}
|
||
#endif
|
||
DO_GLOBAL_CTORS_BODY;
|
||
atexit (__do_global_dtors);
|
||
}
|
||
#endif /* no HAS_INIT_SECTION */
|
||
|
||
#if !defined (HAS_INIT_SECTION) || defined (INVOKE__main)
|
||
/* Subroutine called automatically by `main'.
|
||
Compiling a global function named `main'
|
||
produces an automatic call to this function at the beginning.
|
||
|
||
For many systems, this routine calls __do_global_ctors.
|
||
For systems which support a .init section we use the .init section
|
||
to run __do_global_ctors, so we need not do anything here. */
|
||
|
||
void
|
||
SYMBOL__MAIN ()
|
||
{
|
||
/* Support recursive calls to `main': run initializers just once. */
|
||
static int initialized;
|
||
if (! initialized)
|
||
{
|
||
initialized = 1;
|
||
__do_global_ctors ();
|
||
}
|
||
}
|
||
#endif /* no HAS_INIT_SECTION or INVOKE__main */
|
||
|
||
#endif /* L__main */
|
||
#endif /* __CYGWIN__ */
|
||
|
||
#ifdef L_ctors
|
||
|
||
#include "gbl-ctors.h"
|
||
|
||
/* Provide default definitions for the lists of constructors and
|
||
destructors, so that we don't get linker errors. These symbols are
|
||
intentionally bss symbols, so that gld and/or collect will provide
|
||
the right values. */
|
||
|
||
/* We declare the lists here with two elements each,
|
||
so that they are valid empty lists if no other definition is loaded.
|
||
|
||
If we are using the old "set" extensions to have the gnu linker
|
||
collect ctors and dtors, then we __CTOR_LIST__ and __DTOR_LIST__
|
||
must be in the bss/common section.
|
||
|
||
Long term no port should use those extensions. But many still do. */
|
||
#if !defined(INIT_SECTION_ASM_OP) && !defined(CTOR_LISTS_DEFINED_EXTERNALLY)
|
||
#if defined (TARGET_ASM_CONSTRUCTOR) || defined (USE_COLLECT2)
|
||
func_ptr __CTOR_LIST__[2] = {0, 0};
|
||
func_ptr __DTOR_LIST__[2] = {0, 0};
|
||
#else
|
||
func_ptr __CTOR_LIST__[2];
|
||
func_ptr __DTOR_LIST__[2];
|
||
#endif
|
||
#endif /* no INIT_SECTION_ASM_OP and not CTOR_LISTS_DEFINED_EXTERNALLY */
|
||
#endif /* L_ctors */
|
||
|
||
#ifdef L_exit
|
||
|
||
#include "gbl-ctors.h"
|
||
|
||
#ifdef NEED_ATEXIT
|
||
|
||
#ifndef ON_EXIT
|
||
|
||
# include <errno.h>
|
||
|
||
static func_ptr *atexit_chain = 0;
|
||
static long atexit_chain_length = 0;
|
||
static volatile long last_atexit_chain_slot = -1;
|
||
|
||
int
|
||
atexit (func_ptr func)
|
||
{
|
||
if (++last_atexit_chain_slot == atexit_chain_length)
|
||
{
|
||
atexit_chain_length += 32;
|
||
if (atexit_chain)
|
||
atexit_chain = (func_ptr *) realloc (atexit_chain, atexit_chain_length
|
||
* sizeof (func_ptr));
|
||
else
|
||
atexit_chain = (func_ptr *) malloc (atexit_chain_length
|
||
* sizeof (func_ptr));
|
||
if (! atexit_chain)
|
||
{
|
||
atexit_chain_length = 0;
|
||
last_atexit_chain_slot = -1;
|
||
errno = ENOMEM;
|
||
return (-1);
|
||
}
|
||
}
|
||
atexit_chain[last_atexit_chain_slot] = func;
|
||
return (0);
|
||
}
|
||
|
||
extern void _cleanup (void);
|
||
extern void _exit (int) __attribute__ ((__noreturn__));
|
||
|
||
void
|
||
exit (int status)
|
||
{
|
||
if (atexit_chain)
|
||
{
|
||
for ( ; last_atexit_chain_slot-- >= 0; )
|
||
{
|
||
(*atexit_chain[last_atexit_chain_slot + 1]) ();
|
||
atexit_chain[last_atexit_chain_slot + 1] = 0;
|
||
}
|
||
free (atexit_chain);
|
||
atexit_chain = 0;
|
||
}
|
||
#ifdef EXIT_BODY
|
||
EXIT_BODY;
|
||
#else
|
||
_cleanup ();
|
||
#endif
|
||
_exit (status);
|
||
}
|
||
|
||
#else /* ON_EXIT */
|
||
|
||
/* Simple; we just need a wrapper for ON_EXIT. */
|
||
int
|
||
atexit (func_ptr func)
|
||
{
|
||
return ON_EXIT (func);
|
||
}
|
||
|
||
#endif /* ON_EXIT */
|
||
#endif /* NEED_ATEXIT */
|
||
|
||
#endif /* L_exit */
|