47 lines
1.6 KiB
Modula-2
47 lines
1.6 KiB
Modula-2
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/* Definitions of target machine for GNU compiler for IA-32.
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Copyright (C) 2002 Free Software Foundation, Inc.
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License 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 GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* Add any extra modes needed to represent the condition code.
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For the i386, we need separate modes when floating-point
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equality comparisons are being done.
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Add CCNO to indicate comparisons against zero that requires
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Overflow flag to be unset. Sign bit test is used instead and
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thus can be used to form "a&b>0" type of tests.
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Add CCGC to indicate comparisons agains zero that allows
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unspecified garbage in the Carry flag. This mode is used
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by inc/dec instructions.
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Add CCGOC to indicate comparisons agains zero that allows
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unspecified garbage in the Carry and Overflow flag. This
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mode is used to simulate comparisons of (a-b) and (a+b)
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against zero using sub/cmp/add operations.
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Add CCZ to indicate that only the Zero flag is valid. */
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CC (CCGC)
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CC (CCGOC)
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CC (CCNO)
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CC (CCZ)
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CC (CCFP)
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CC (CCFPU)
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