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1 ;; Constraint definitions for m68k
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2 ;; Copyright (C) 2007 Free Software Foundation, Inc.
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3
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4 ;; This file is part of GCC.
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5
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6 ;; GCC is free software; you can redistribute it and/or modify it
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7 ;; under the terms of the GNU General Public License as published
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8 ;; by the Free Software Foundation; either version 3, or (at your
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9 ;; option) any later version.
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10
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11 ;; GCC is distributed in the hope that it will be useful, but WITHOUT
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12 ;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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13 ;; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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14 ;; License for more details.
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15
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16 ;; You should have received a copy of the GNU General Public License
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17 ;; along with GCC; see the file COPYING3. If not see
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18 ;; <http://www.gnu.org/licenses/>.
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19
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20 (define_register_constraint "a" "ADDR_REGS"
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21 "Address register.")
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22
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23 (define_register_constraint "d" "DATA_REGS"
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24 "Data register.")
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25
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26 (define_register_constraint "f" "TARGET_HARD_FLOAT ? FP_REGS : NO_REGS"
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27 "Floating point register.")
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28
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29 (define_constraint "I"
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30 "Integer constant in the range 1 @dots 8, for immediate shift counts and addq."
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31 (and (match_code "const_int")
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32 (match_test "ival > 0 && ival <= 8")))
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33
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34 (define_constraint "J"
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35 "Signed 16-bit integer constant."
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36 (and (match_code "const_int")
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37 (match_test "ival >= -0x8000 && ival <= 0x7fff")))
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38
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39 (define_constraint "K"
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40 "Integer constant that moveq can't handle."
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41 (and (match_code "const_int")
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42 (match_test "ival < -0x80 || ival >= 0x80")))
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43
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44 (define_constraint "L"
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45 "Integer constant in the range -8 @dots -1, for subq."
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46 (and (match_code "const_int")
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47 (match_test "ival < 0 && ival >= -8")))
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48
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49 (define_constraint "M"
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50 "Integer constant that moveq+notb can't handle."
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51 (and (match_code "const_int")
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52 (match_test "ival < -0x100 || ival >= 0x100")))
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53
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54 (define_constraint "N"
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55 "Integer constant in the range 24 @dots 31, for rotatert:SI 8 to 1 expressed as rotate."
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56 (and (match_code "const_int")
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57 (match_test "ival >= 24 && ival <= 31")))
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58
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59 (define_constraint "O"
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60 "Integer constant 16, for rotate using swap."
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61 (and (match_code "const_int")
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62 (match_test "ival == 16")))
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63
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64 (define_constraint "P"
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65 "Integer constant in the range 8 @dots 15, for rotatert:HI 8 to 1 expressed as rotate."
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66 (and (match_code "const_int")
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67 (match_test "ival >= 8 && ival <= 15")))
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68
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69 (define_constraint "R"
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70 "Integer constant that mov3q can handle."
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71 (and (match_code "const_int")
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72 (match_test "valid_mov3q_const (ival)")))
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73
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74 (define_constraint "G"
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75 "Defines all of the floating constants that are *NOT* 68881
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76 constants. This is so 68881 constants get reloaded and the fpmovecr
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77 is used."
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78 (and (match_code "const_double")
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79 (match_test "!(TARGET_68881 && standard_68881_constant_p (op))")))
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80
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81 (define_constraint "S"
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82 "Used for operands that satisfy 'm' when -mpcrel is in effect."
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83 (and (match_code "mem")
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84 (match_test "TARGET_PCREL
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85 && (GET_CODE (XEXP (op, 0)) == SYMBOL_REF
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86 || GET_CODE (XEXP (op, 0)) == LABEL_REF
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87 || GET_CODE (XEXP (op, 0)) == CONST)")))
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88
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89 (define_constraint "T"
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90 "Used for operands that satisfy 's' when -mpcrel is not in effect."
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91 (and (match_code "symbol_ref,label_ref,const")
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92 (match_test "!flag_pic")))
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93
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94 (define_memory_constraint "Q"
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95 "Means address register indirect addressing mode."
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96 (and (match_code "mem")
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97 (match_test "m68k_matches_q_p (op)")))
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98
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99 (define_constraint "U"
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100 "Used for register offset addressing."
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101 (and (match_code "mem")
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102 (match_test "m68k_matches_u_p (op)")))
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103
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104 (define_constraint "W"
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105 "Used for const_call_operands."
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106 (match_operand 0 "const_call_operand"))
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107
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108 (define_constraint "Cs"
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109 "symbol_ref or const."
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110 (match_code "symbol_ref,const"))
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111
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112 (define_constraint "Ci"
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113 "const_int."
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114 (and (match_code "const_int")
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115 (match_test "true")))
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116
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117 (define_constraint "C0"
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118 "const_int 0."
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119 (and (match_code "const_int")
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120 (match_test "ival == 0")))
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121
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122 (define_constraint "Cj"
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123 "Range of signed numbers that don't fit in 16 bits."
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124 (and (match_code "const_int")
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125 (match_test "ival < -0x8000 || ival > 0x7FFF")))
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126
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127 (define_constraint "CQ"
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128 "Integers valid for mvq."
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129 (and (match_code "const_int")
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130 (match_test "m68k_const_method (ival) == MOVQ")))
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131
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132 (define_constraint "CW"
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133 "Integers valid for a moveq followed by a swap."
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134 (and (match_code "const_int")
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135 (match_test "m68k_const_method (ival) == SWAP")))
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136
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137 (define_constraint "CZ"
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138 "Integers valid for mvz."
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139 (and (match_code "const_int")
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140 (match_test "m68k_const_method (ival) == MVZ")))
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141
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142 (define_constraint "CS"
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143 "Integers valid for mvs."
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144 (and (match_code "const_int")
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145 (match_test "m68k_const_method (ival) == MVS")))
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146
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147 (define_constraint "Ap"
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148 "push_operand."
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149 (match_operand 0 "push_operand"))
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150
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151 (define_constraint "Ac"
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152 "Non-register operands allowed in clr."
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153 (and (match_operand 0 "movsi_const0_operand")
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154 (match_test "!REG_P (op)")))
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