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annotate lwasm/insn_bitbit.c @ 417:d7b7004b0883

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Update gcc6809 patch to fix an ICE. Add new gcc6809 patch with a fix to an internal compiler error reported by Tormod Volden. It seems whoever created the offending instruction patterns didn't fully understand the instruction contraints system and likely got away with it due to characteristics of the instruction generator in previous versions of gcc. Alas, it causes problems now so unless someone has a brilliant idea how to make it work, addhi_mem_1 and addhi_mem_minus1 have to go. Fortunately, the compiler is smart enough to use an alternate strategy all on its own.
author William Astle <lost@l-w.ca>
date Sun, 27 Mar 2016 21:46:18 -0600
parents b20f14edda5a
children
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1 /*
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2 insn_bitbit.c
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3 Copyright © 2009 William Astle
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4
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5 This file is part of LWASM.
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6
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7 LWASM is free software: you can redistribute it and/or modify it under the
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8 terms of the GNU General Public License as published by the Free Software
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9 Foundation, either version 3 of the License, or (at your option) any later
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10 version.
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11
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12 This program is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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15 more details.
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16
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17 You should have received a copy of the GNU General Public License along with
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18 this program. If not, see <http://www.gnu.org/licenses/>.
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19 */
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20
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21 #include <stdlib.h>
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22 #include <ctype.h>
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23
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24 #include <lw_expr.h>
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25
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26 #include "lwasm.h"
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27 #include "instab.h"
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28
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29 // these instructions cannot tolerate external references
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30 PARSEFUNC(insn_parse_bitbit)
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31 {
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32 int r;
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33 lw_expr_t e;
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34 // int v1;
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35 // int tv;
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36
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37 r = toupper(*(*p)++);
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38 if (r == 'A')
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39 r = 1;
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40 else if (r == 'B')
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41 r = 2;
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42 else if (r == 'C' && toupper(**p) == 'C')
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43 {
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44 r = 0;
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45 (*p)++;
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46 }
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47 else
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48 {
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49 lwasm_register_error(as, l, E_REGISTER_BAD);
0
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50 return;
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51 }
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52 lwasm_skip_to_next_token(l, p);
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53 if (*(*p)++ != ',')
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54 {
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55 lwasm_register_error(as, l, E_OPERAND_BAD);
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56 return;
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57 }
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58 e = lwasm_parse_expr(as, p);
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59 if (!e)
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60 {
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61 lwasm_register_error(as, l, E_OPERAND_BAD);
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62 return;
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63 }
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64 lwasm_save_expr(l, 0, e);
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65 if (*(*p)++ != ',')
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66 {
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67 lwasm_register_error(as, l, E_OPERAND_BAD);
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68 return;
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69 }
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70
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71 e = lwasm_parse_expr(as, p);
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72 if (!e)
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73 {
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74 lwasm_register_error(as, l, E_OPERAND_BAD);
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75 return;
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76 }
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77 lwasm_save_expr(l, 1, e);
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78
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79 if (*(*p)++ != ',')
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80 {
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81 lwasm_register_error(as, l, E_OPERAND_BAD);
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82 return;
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83 }
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84 lwasm_skip_to_next_token(l, p);
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85 // ignore base page address modifier
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86 if (**p == '<')
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87 (*p)++;
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88
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89 e = lwasm_parse_expr(as, p);
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90 if (!e)
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91 {
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92 lwasm_register_error(as, l, E_OPERAND_BAD);
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93 return;
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94 }
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95 lwasm_save_expr(l, 2, e);
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96
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97 l -> lint = r;
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98 l -> len = OPLEN(instab[l -> insn].ops[0]) + 2;
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99 }
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100
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101 EMITFUNC(insn_emit_bitbit)
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102 {
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103 int v1, v2;
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104 lw_expr_t e;
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105
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106 e = lwasm_fetch_expr(l, 0);
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107 if (!lw_expr_istype(e, lw_expr_type_int))
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108 {
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109 lwasm_register_error(as, l, E_BITNUMBER_UNRESOLVED);
0
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110 return;
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111 }
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112 v1 = lw_expr_intval(e);
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113 if (v1 < 0 || v1 > 7)
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114 {
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115 lwasm_register_error(as, l, E_BITNUMBER_INVALID);
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116 v1 = 0;
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117 }
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118
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119 e = lwasm_fetch_expr(l, 1);
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120 if (!lw_expr_istype(e, lw_expr_type_int))
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121 {
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122 lwasm_register_error(as, l, E_BITNUMBER_UNRESOLVED);
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123 return;
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124 }
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125 v2 = lw_expr_intval(e);
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126 if (v2 < 0 || v2 > 7)
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127 {
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128 lwasm_register_error(as, l, E_BITNUMBER_INVALID);
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129 v2 = 0;
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130 }
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131 l -> pb = (l -> lint << 6) | (v1 << 3) | v2;
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132
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133 e = lwasm_fetch_expr(l, 2);
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134 if (lw_expr_istype(e, lw_expr_type_int))
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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135 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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136 v1 = lw_expr_intval(e) & 0xFFFF;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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137 v2 = v1 - ((l -> dpval) << 8);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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138 if (v2 > 0xFF || v2 < 0)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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139 {
370
8764142b3192 Convert internal error/warning handling framework to a new unified system
William Astle <lost@l-w.ca>
parents: 2
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140 lwasm_register_error(as, l, E_BYTE_OVERFLOW);
0
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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141 return;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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142 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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143 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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144 lwasm_emitop(l, instab[l -> insn].ops[0]);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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145 lwasm_emit(l, l -> pb);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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146 lwasm_emitexpr(l, e, 1);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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147 }