45 lines
1.8 KiB
Modula-2
45 lines
1.8 KiB
Modula-2
/* Machine description for Visium.
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Copyright (C) 2014-2022 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
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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 3, or (at your option)
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any later version.
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GCC 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 GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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/* Add any extra modes needed to represent the condition code.
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We have a CCNZ mode which is used for implicit comparisons with zero when
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arithmetic instructions set the condition code. Only the N and Z flags
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are valid in this mode, which means that only the =,!= and <,>= operators
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can be used in conjunction with it.
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We also have a CCCmode which is used by the arithmetic instructions when
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they explicitly set the C flag (unsigned overflow) and by the bit-test
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instruction. Only the =,!= and unsigned <,>= operators can be used in
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conjunction with it.
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We also have a CCVmode which is used by the arithmetic instructions when
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they explicitly set the V flag (signed overflow). Only the =,!= operators
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can be used in conjunction with it.
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We also have two modes to indicate that the condition code is set by the
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the floating-point unit. One for comparisons which generate an exception
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if the result is unordered (CCFPEmode) and one for comparisons which never
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generate such an exception (CCFPmode). */
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CC_MODE (CCNZ);
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CC_MODE (CCC);
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CC_MODE (CCV);
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CC_MODE (CCFP);
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CC_MODE (CCFPE);
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