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annotate lwasm/os9.c @ 536:33a59e232a5b

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Fix basic output target to keep lines below 249 characters The line length limiter in the basic output was not properly moving to the next before 249 characters, which is the limit Color Basic can read in an ASCII basic program. Changed the line limiter to 240 from 247 to account for a possible 5 digit number plus a comma and just a bit of extra breathing space.
author William Astle <lost@l-w.ca>
date Thu, 16 Jun 2022 13:55:34 -0600
parents 8764142b3192
children 928c033c0cd0
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
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1 /*
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2 os9.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 This file implements the various pseudo operations related to OS9 target
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22 */
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23 #include <errno.h>
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24 #include <stdio.h>
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25 #include <stdlib.h>
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26 #include <string.h>
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27
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28 #include <lw_expr.h>
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29
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30 #include "lwasm.h"
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31 #include "instab.h"
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32
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33
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34 // OS9 syscall
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35 PARSEFUNC(pseudo_parse_os9)
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36 {
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37 lw_expr_t e;
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38
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244f1227f2b5 Allow os9 directive in object target
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39 if (as -> output_format != OUTPUT_OS9 && as -> output_format != OUTPUT_OBJ)
0
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40 {
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41 lwasm_register_error2(as, l, E_DIRECTIVE_OS9_ONLY, "%s", "os9");
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42 return;
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43 }
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44
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45 // fetch immediate value
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46 e = lwasm_parse_expr(as, p);
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47 if (!e)
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48 {
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49 lwasm_register_error(as, l, E_OPERAND_BAD);
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50 return;
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51 }
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52 lwasm_save_expr(l, 0, e);
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53 l -> len = 3;
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54 }
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55
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56 EMITFUNC(pseudo_emit_os9)
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57 {
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58 lw_expr_t e;
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59
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60 e = lwasm_fetch_expr(l, 0);
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61
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62 lwasm_emitop(l, 0x103f);
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63 lwasm_emitexpr(l, e, 1);
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64 }
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65
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66 PARSEFUNC(pseudo_parse_mod)
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67 {
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68 lw_expr_t e;
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69 int i;
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70
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71 if (as -> output_format != OUTPUT_OS9)
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72 {
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73 lwasm_register_error2(as, l, E_DIRECTIVE_OS9_ONLY, "%s", "mod");
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74 skip_operand(p);
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75 return;
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76 }
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77
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78 if (as -> inmod)
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79 {
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80 lwasm_register_error(as, l, E_MODULE_IN);
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81 skip_operand(p);
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82 return;
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83 }
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84
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85 // parse 6 expressions...
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86 for (i = 0; i < 5; i++)
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87 {
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88 e = lwasm_parse_expr(as, p);
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89 if (!e)
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90 {
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91 lwasm_register_error(as, l, E_OPERAND_BAD);
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92 return;
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93 }
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94
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95 lwasm_save_expr(l, i, e);
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96
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97 if (**p != ',')
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98 {
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99 lwasm_register_error(as, l, E_OPERAND_BAD);
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100 return;
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101 }
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102 (*p)++;
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103 }
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104
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105 e = lwasm_parse_expr(as, p);
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106 if (!e)
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107 {
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108 lwasm_register_error(as, l, E_OPERAND_BAD);
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109 return;
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110 }
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111 lwasm_save_expr(l, 5, e);
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112
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113 l -> inmod = 1;
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114
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115 // we have an implicit ORG 0 with "mod"
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116 lw_expr_destroy(l -> addr);
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117 l -> addr = lw_expr_build(lw_expr_type_int, 0);
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118
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119 // likewise for data pointer
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120 lw_expr_destroy(l -> daddr);
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121 l -> daddr = lw_expr_build(lw_expr_type_int, 0);
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122
0
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123 // init crc
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124 as -> inmod = 1;
112
3fc568436721 Correct size handling for mod and emod
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125
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126 l -> len = 13;
0
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127 }
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128
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129 EMITFUNC(pseudo_emit_mod)
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130 {
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131 lw_expr_t e1, e2, e3, e4;
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132 int csum;
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133
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134 as -> crc[0] = 0xff;
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135 as -> crc[1] = 0xff;
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136 as -> crc[2] = 0xff;
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137
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138 // sync bytes
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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139 lwasm_emit(l, 0x87);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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140 lwasm_emit(l, 0xcd);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
141
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
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142 // mod length
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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143 lwasm_emitexpr(l, e1 = lwasm_fetch_expr(l, 0), 2);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
144
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
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145 // name offset
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
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146 lwasm_emitexpr(l, e2 = lwasm_fetch_expr(l, 1), 2);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
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147
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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148 // type
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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149 lwasm_emitexpr(l, e3 = lwasm_fetch_expr(l, 2), 1);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
150
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
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151 // flags/rev
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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152 lwasm_emitexpr(l, e4 = lwasm_fetch_expr(l, 3), 1);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
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153
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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154 // header check
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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155 csum = ~(0x87 ^ 0xCD ^(lw_expr_intval(e1) >> 8) ^ (lw_expr_intval(e1) & 0xff)
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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156 ^ (lw_expr_intval(e2) >> 8) ^ (lw_expr_intval(e2) & 0xff)
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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157 ^ lw_expr_intval(e3) ^ lw_expr_intval(e4));
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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158 lwasm_emit(l, csum);
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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159
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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160 // module type specific output
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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161 // note that these are handled the same for all so
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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162 // there need not be any special casing
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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163
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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164 // exec offset or fmgr name offset
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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165 lwasm_emitexpr(l, lwasm_fetch_expr(l, 4), 2);
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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diff changeset
166
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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167 // data size or drvr name offset
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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168 lwasm_emitexpr(l, lwasm_fetch_expr(l, 5), 2);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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169 }
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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170
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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171 PARSEFUNC(pseudo_parse_emod)
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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172 {
144
86d097dceebc Make os9 directives not throw spurious bad operand errors
lost@l-w.ca
parents: 142
diff changeset
173 skip_operand(p);
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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174 if (as -> output_format != OUTPUT_OS9)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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175 {
370
8764142b3192 Convert internal error/warning handling framework to a new unified system
William Astle <lost@l-w.ca>
parents: 150
diff changeset
176 lwasm_register_error2(as, l, E_DIRECTIVE_OS9_ONLY, "%s", "emod");
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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177 return;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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178 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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179
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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180 if (!(as -> inmod))
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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181 {
370
8764142b3192 Convert internal error/warning handling framework to a new unified system
William Astle <lost@l-w.ca>
parents: 150
diff changeset
182 lwasm_register_error(as, l, E_MODULE_NOTIN);
0
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
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183 return;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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184 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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185
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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186 as -> inmod = 0;
112
3fc568436721 Correct size handling for mod and emod
lost@l-w.ca
parents: 0
diff changeset
187 l -> len = 3;
0
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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188 }
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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189
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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190 EMITFUNC(pseudo_emit_emod)
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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191 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
192 unsigned char tcrc[3];
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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193
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
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194 // don't mess with CRC!
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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diff changeset
195 tcrc[0] = as -> crc[0] ^ 0xff;
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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diff changeset
196 tcrc[1] = as -> crc[1] ^ 0xff;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
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197 tcrc[2] = as -> crc[2] ^ 0xff;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
198 lwasm_emit(l, tcrc[0]);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
199 lwasm_emit(l, tcrc[1]);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
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200 lwasm_emit(l, tcrc[2]);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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201 }