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annotate lwlink/output.c @ 256:bc25269d96bc

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Fix crash on expression range calculation When attempting to calculate the range of a NULL expression, just indicate failure and bail out rather than dereferencing the expression and crashing out with no feedback.
author William Astle <lost@l-w.ca>
date Wed, 30 Jan 2013 21:47:15 -0700
parents 11b710d231bd
children ebda5c96665e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
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1 /*
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2 output.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 LWLINK.
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6
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7 LWLINK 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 Actually output the binary
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22 */
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23
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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 "lwlink.h"
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29
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30 // this prevents warnings about not using the return value of fwrite()
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31 // and, theoretically, can be replaced with a function that handles things
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32 // better in the future
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33 #define writebytes(s, l, c, f) do { int r; r = fwrite((s), (l), (c), (f)); } while (0)
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34
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35 void do_output_os9(FILE *of);
0
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36 void do_output_decb(FILE *of);
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37 void do_output_raw(FILE *of);
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38 void do_output_lwex0(FILE *of);
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39
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40 void do_output(void)
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41 {
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42 FILE *of;
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43
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44 of = fopen(outfile, "wb");
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45 if (!of)
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46 {
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47 fprintf(stderr, "Cannot open output file %s: ", outfile);
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48 perror("");
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49 exit(1);
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50 }
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51
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52 switch (outformat)
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53 {
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54 case OUTPUT_DECB:
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55 do_output_decb(of);
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56 break;
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57
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58 case OUTPUT_RAW:
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59 do_output_raw(of);
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60 break;
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61
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62 case OUTPUT_LWEX0:
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63 do_output_lwex0(of);
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64 break;
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65
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66 case OUTPUT_OS9:
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67 do_output_os9(of);
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68 break;
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69
0
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70 default:
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71 fprintf(stderr, "Unknown output format doing output!\n");
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72 exit(111);
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73 }
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74
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75 fclose(of);
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76 }
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77
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78 void do_output_decb(FILE *of)
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79 {
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80 int sn, sn2;
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81 int cloc, olen;
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82 unsigned char buf[5];
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83
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84 for (sn = 0; sn < nsects; sn++)
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85 {
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86 if (sectlist[sn].ptr -> flags & SECTION_BSS)
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87 {
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88 // no output for a BSS section
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89 continue;
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90 }
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91 if (sectlist[sn].ptr -> codesize == 0)
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92 {
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93 // don't generate output for a zero size section
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94 continue;
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95 }
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96
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97 // calculate the length of this output block
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98 cloc = sectlist[sn].ptr -> loadaddress;
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99 olen = 0;
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100 for (sn2 = sn; sn2 < nsects; sn2++)
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101 {
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102 // ignore BSS sections
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103 if (sectlist[sn2].ptr -> flags & SECTION_BSS)
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104 continue;
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105 // ignore zero length sections
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106 if (sectlist[sn2].ptr -> codesize == 0)
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107 continue;
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108 if (cloc != sectlist[sn2].ptr -> loadaddress)
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109 break;
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110 olen += sectlist[sn2].ptr -> codesize;
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111 cloc += sectlist[sn2].ptr -> codesize;
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112 }
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113
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114 // write a preamble
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115 buf[0] = 0x00;
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116 buf[1] = olen >> 8;
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117 buf[2] = olen & 0xff;
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118 buf[3] = sectlist[sn].ptr -> loadaddress >> 8;
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119 buf[4] = sectlist[sn].ptr -> loadaddress & 0xff;
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120 writebytes(buf, 1, 5, of);
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121 for (; sn < sn2; sn++)
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122 {
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123 if (sectlist[sn].ptr -> flags & SECTION_BSS)
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124 continue;
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125 if (sectlist[sn].ptr -> codesize == 0)
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126 continue;
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127 writebytes(sectlist[sn].ptr -> code, 1, sectlist[sn].ptr -> codesize, of);
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128 }
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129 sn--;
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130 }
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131 // write a postamble
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132 buf[0] = 0xff;
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133 buf[1] = 0x00;
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134 buf[2] = 0x00;
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135 buf[3] = linkscript.execaddr >> 8;
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136 buf[4] = linkscript.execaddr & 0xff;
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137 writebytes(buf, 1, 5, of);
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
138 }
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
139
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
140 void do_output_raw(FILE *of)
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:
diff changeset
142 int nskips = 0; // used to output blanks for BSS inline
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
143 int sn;
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:
diff changeset
145 for (sn = 0; sn < nsects; sn++)
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
146 {
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
147 if (sectlist[sn].ptr -> flags & SECTION_BSS)
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
148 {
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
149 // no output for a BSS section
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 nskips += sectlist[sn].ptr -> codesize;
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
151 continue;
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
152 }
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
153 while (nskips > 0)
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
154 {
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
155 // the "" is not an error - it turns into a single NUL byte!
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
156 writebytes("", 1, 1, of);
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
157 nskips--;
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
158 }
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
159 writebytes(sectlist[sn].ptr -> code, 1, sectlist[sn].ptr -> codesize, of);
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
160 }
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
161 }
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
162
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
163 void do_output_lwex0(FILE *of)
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
164 {
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
165 int nskips = 0; // used to output blanks for BSS inline
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
166 int sn;
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
167 int codedatasize = 0;
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
168 unsigned char buf[32];
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
169
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
170 // calculate items for the file header
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
171 for (sn = 0; sn < nsects; sn++)
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
172 {
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
173 if (sectlist[sn].ptr -> flags & SECTION_BSS)
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
174 {
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
175 // no output for a BSS section
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
176 nskips += sectlist[sn].ptr -> codesize;
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
177 continue;
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
178 }
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
179 codedatasize += nskips;
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
180 nskips = 0;
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
181 codedatasize += sectlist[sn].ptr -> codesize;
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
182 }
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
183
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
184 // output the file header
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
185 buf[0] = 'L';
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
186 buf[1] = 'W';
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
187 buf[2] = 'E';
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
188 buf[3] = 'X';
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
189 buf[4] = 0; // version 0
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
190 buf[5] = 0; // low stack
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
191 buf[6] = linkscript.stacksize / 256;
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
192 buf[7] = linkscript.stacksize & 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
193 buf[8] = nskips / 256;
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
194 buf[9] = nskips & 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
195 buf[10] = codedatasize / 256;
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
196 buf[11] = codedatasize & 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
197 buf[12] = linkscript.execaddr / 256;
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 buf[13] = linkscript.execaddr & 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
199 memset(buf + 14, 0, 18);
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
200
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
201 writebytes(buf, 1, 32, of);
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
202 // output the data
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
203 // NOTE: disjoint load addresses will not work correctly!!!!!
180
11b710d231bd Fixed bug handling bss in lwex
lost@l-w.ca
parents: 151
diff changeset
204 nskips = 0;
0
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
205 for (sn = 0; sn < nsects; sn++)
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
206 {
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
207 if (sectlist[sn].ptr -> flags & SECTION_BSS)
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
208 {
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
209 // no output for a BSS section
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
210 nskips += sectlist[sn].ptr -> codesize;
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
211 continue;
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
212 }
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
213 while (nskips > 0)
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
214 {
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
215 // the "" is not an error - it turns into a single NUL byte!
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
216 writebytes("", 1, 1, of);
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
217 nskips--;
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
218 }
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
219 writebytes(sectlist[sn].ptr -> code, 1, sectlist[sn].ptr -> codesize, of);
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
220 }
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
221 }
148
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
222
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
223 void os9crc(unsigned char crc[3], unsigned char b)
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
224 {
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
225 b ^= crc[0];
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
226 crc[0] = crc[1];
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
227 crc[1] = crc[2];
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
228 crc[1] ^= b >> 7;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
229 crc[2] = b << 1;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
230 crc[1] ^= b >> 2;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
231 crc[2] ^= b << 6;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
232 b ^= b << 1;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
233 b ^= b << 2;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
234 b ^= b << 4;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
235 if (b & 0x80)
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
236 {
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
237 crc[0] ^= 0x80;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
238 crc[2] ^= 0x21;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
239 }
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
240 }
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
241
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
242
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
243 void do_output_os9(FILE *of)
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
244 {
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
245 int sn;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
246 int codedatasize = 0;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
247 int bsssize = 0;
151
3b58d76ea032 Fix up some minor thinkos in handling the module layout and header
lost@l-w.ca
parents: 148
diff changeset
248 int nameoff;
148
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
249 int i;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
250
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
251 unsigned char buf[16];
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
252 unsigned char crc[3];
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
253
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
254 // calculate items for the file header
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
255 for (sn = 0; sn < nsects; sn++)
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
256 {
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
257 if (sectlist[sn].ptr -> flags & SECTION_BSS)
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
258 {
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
259 // no output for a BSS section
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
260 bsssize += sectlist[sn].ptr -> codesize;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
261 continue;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
262 }
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
263 codedatasize += sectlist[sn].ptr -> codesize;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
264 }
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
265
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
266 // now bss size is the data size for the module
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
267 // and codesize is the length of the module minus the module header
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
268 // and CRC
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
269
151
3b58d76ea032 Fix up some minor thinkos in handling the module layout and header
lost@l-w.ca
parents: 148
diff changeset
270 codedatasize += 13; // add in headers
3b58d76ea032 Fix up some minor thinkos in handling the module layout and header
lost@l-w.ca
parents: 148
diff changeset
271 nameoff = codedatasize; // we'll put the name at the end
3b58d76ea032 Fix up some minor thinkos in handling the module layout and header
lost@l-w.ca
parents: 148
diff changeset
272 codedatasize += 3; // add in CRC
148
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
273 codedatasize += strlen(linkscript.name); // add in name length
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
274
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
275 // output the file header
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
276 buf[0] = 0x87;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
277 buf[1] = 0xCD;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
278 buf[2] = (codedatasize >> 8) & 0xff;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
279 buf[3] = codedatasize & 0xff;
151
3b58d76ea032 Fix up some minor thinkos in handling the module layout and header
lost@l-w.ca
parents: 148
diff changeset
280 buf[4] = (nameoff >> 8) & 0xff;
3b58d76ea032 Fix up some minor thinkos in handling the module layout and header
lost@l-w.ca
parents: 148
diff changeset
281 buf[5] = nameoff & 0xff;
148
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
282 buf[6] = (linkscript.modtype << 4) | (linkscript.modlang);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
283 buf[7] = (linkscript.modattr << 4) | (linkscript.modrev);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
284 buf[8] = (~(buf[0] ^ buf[1] ^ buf[2] ^ buf[3] ^ buf[4] ^ buf[5] ^ buf[6] ^ buf[7])) & 0xff;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
285 buf[9] = (linkscript.execaddr >> 8) & 0xff;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
286 buf[10] = linkscript.execaddr & 0xff;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
287 buf[11] = (bsssize >> 8) & 0xff;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
288 buf[12] = bsssize & 0xff;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
289
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
290 crc[0] = 0xff;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
291 crc[1] = 0xff;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
292 crc[2] = 0xff;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
293
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
294 os9crc(crc, buf[0]);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
295 os9crc(crc, buf[1]);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
296 os9crc(crc, buf[2]);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
297 os9crc(crc, buf[3]);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
298 os9crc(crc, buf[4]);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
299 os9crc(crc, buf[5]);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
300 os9crc(crc, buf[6]);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
301 os9crc(crc, buf[7]);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
302 os9crc(crc, buf[8]);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
303 os9crc(crc, buf[9]);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
304 os9crc(crc, buf[10]);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
305 os9crc(crc, buf[11]);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
306 os9crc(crc, buf[12]);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
307
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
308
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
309 writebytes(buf, 1, 13, of);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
310
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
311 // output the data
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
312 // NOTE: disjoint load addresses will not work correctly!!!!!
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
313 for (sn = 0; sn < nsects; sn++)
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
314 {
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
315 if (sectlist[sn].ptr -> flags & SECTION_BSS)
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
316 {
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
317 // no output for a BSS section
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
318 continue;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
319 }
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
320 writebytes(sectlist[sn].ptr -> code, 1, sectlist[sn].ptr -> codesize, of);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
321 for (i = 0; i < sectlist[sn].ptr -> codesize; i++)
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
322 os9crc(crc, sectlist[sn].ptr -> code[i]);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
323 }
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
324
151
3b58d76ea032 Fix up some minor thinkos in handling the module layout and header
lost@l-w.ca
parents: 148
diff changeset
325 // output the name
3b58d76ea032 Fix up some minor thinkos in handling the module layout and header
lost@l-w.ca
parents: 148
diff changeset
326 for (i = 0; linkscript.name[i + 1]; i++)
3b58d76ea032 Fix up some minor thinkos in handling the module layout and header
lost@l-w.ca
parents: 148
diff changeset
327 {
3b58d76ea032 Fix up some minor thinkos in handling the module layout and header
lost@l-w.ca
parents: 148
diff changeset
328 writebytes(linkscript.name + i, 1, 1, of);
3b58d76ea032 Fix up some minor thinkos in handling the module layout and header
lost@l-w.ca
parents: 148
diff changeset
329 os9crc(crc, linkscript.name[i]);
3b58d76ea032 Fix up some minor thinkos in handling the module layout and header
lost@l-w.ca
parents: 148
diff changeset
330 }
3b58d76ea032 Fix up some minor thinkos in handling the module layout and header
lost@l-w.ca
parents: 148
diff changeset
331 buf[0] = linkscript.name[i] | 0x80;
3b58d76ea032 Fix up some minor thinkos in handling the module layout and header
lost@l-w.ca
parents: 148
diff changeset
332 writebytes(buf, 1, 1, of);
3b58d76ea032 Fix up some minor thinkos in handling the module layout and header
lost@l-w.ca
parents: 148
diff changeset
333 os9crc(crc, buf[0]);
3b58d76ea032 Fix up some minor thinkos in handling the module layout and header
lost@l-w.ca
parents: 148
diff changeset
334
148
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
335 crc[0] ^= 0xff;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
336 crc[1] ^= 0xff;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
337 crc[2] ^= 0xff;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
338 writebytes(crc, 1, 3, of);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
339 }