65 lines
2.0 KiB
Markdown
65 lines
2.0 KiB
Markdown
;; GCC machine description for picochip
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;; Copyright (C) 2008, 2009 Free Software Foundation, Inc.
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;; Contributed by picoChip Designs Ltd (http://www.picochip.com)
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;; Maintained by Daniel Towner (dant@picochip.com) and Hariharan
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;; Sandanagobalane (hariharan@picochip.com)
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;;
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;; This file is part of GCC.
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;;
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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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;;
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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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;;
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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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(define_constraint "I"
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"4-bits signed value"
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(and (match_code "const_int")
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(match_test " ival >= -8 && ival< 8")))
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(define_constraint "J"
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"4-bits unsigned value"
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(and (match_code "const_int")
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(match_test "ival>=0 && ival < 16")))
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(define_constraint "K"
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"8-bits signed value"
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(and (match_code "const_int")
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(match_test " ival >= -128 && ival < 128")))
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(define_constraint "M"
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"4-bits magnitude"
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(and (match_code "const_int")
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(match_test " abs(ival) < 16")))
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(define_constraint "N"
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"10-bits signed value"
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(and (match_code "const_int")
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(match_test "ival >= -512 && ival < 512")))
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(define_constraint "O"
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"16-bits signed value"
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(and (match_code "const_int")
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(match_test " ival >= -32768 && ival < 32768 ")))
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(define_constraint "a"
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"See if this is an absolute address in memory"
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(and (match_code "mem")
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(match_test "picochip_absolute_memory_operand(op,mode) == 1")))
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(define_register_constraint "k" "FRAME_REGS"
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"Frame regs")
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(define_register_constraint "f" "PTR_REGS"
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"Pointer regs")
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(define_register_constraint "t" "TWIN_REGS"
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"Twin regs")
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