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annotate lwlink/output.c @ 389:2d9b7ae6c329

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Throw error if address overflows in extended mode This may or may not cause extra problems due to sloppiness in dealing with calculations that overflow in 16 bits. However, presumably it is a good idea so unless something major pops up, it seems like a good idea. Thanks to Erik G <erik@6809.org> for the patch.
author William Astle <lost@l-w.ca>
date Mon, 13 Jul 2015 21:37:49 -0600
parents 55c1f9a321e9
children 9f0448022f1f
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
264
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33 //#define writebytes(s, l, c, f) do { int r; r = fwrite((s), (l), (c), (f)); (void)r; } while (0)
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34 #define writebytes(s, l, c, f) do { (void)(fwrite((s), (l), (c), (f)) && 1); } while (0)
0
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35
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36 void do_output_os9(FILE *of);
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37 void do_output_decb(FILE *of);
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38 void do_output_raw(FILE *of);
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39 void do_output_lwex0(FILE *of);
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40 void do_output_srec(FILE *of);
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41
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42 void do_output(void)
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43 {
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44 FILE *of;
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45
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46 of = fopen(outfile, "wb");
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47 if (!of)
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48 {
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49 fprintf(stderr, "Cannot open output file %s: ", outfile);
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50 perror("");
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51 exit(1);
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52 }
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53
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54 switch (outformat)
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55 {
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56 case OUTPUT_DECB:
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57 do_output_decb(of);
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58 break;
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59
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60 case OUTPUT_RAW:
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61 do_output_raw(of);
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62 break;
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63
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64 case OUTPUT_LWEX0:
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65 do_output_lwex0(of);
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66 break;
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67
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68 case OUTPUT_OS9:
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69 do_output_os9(of);
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70 break;
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71
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72 case OUTPUT_SREC:
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73 do_output_srec(of);
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74 break;
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75
0
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76 default:
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77 fprintf(stderr, "Unknown output format doing output!\n");
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78 exit(111);
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79 }
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80
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81 fclose(of);
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82 }
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83
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84 void do_output_decb(FILE *of)
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85 {
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86 int sn, sn2;
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87 int cloc, olen;
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88 unsigned char buf[5];
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89
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90 for (sn = 0; sn < nsects; sn++)
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91 {
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92 if (sectlist[sn].ptr -> flags & SECTION_BSS)
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93 {
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94 // no output for a BSS section
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95 continue;
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96 }
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97 if (sectlist[sn].ptr -> codesize == 0)
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98 {
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99 // don't generate output for a zero size section
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100 continue;
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101 }
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102
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103 // calculate the length of this output block
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104 cloc = sectlist[sn].ptr -> loadaddress;
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105 olen = 0;
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106 for (sn2 = sn; sn2 < nsects; sn2++)
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107 {
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108 // ignore BSS sections
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109 if (sectlist[sn2].ptr -> flags & SECTION_BSS)
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110 continue;
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111 // ignore zero length sections
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112 if (sectlist[sn2].ptr -> codesize == 0)
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113 continue;
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114 if (cloc != sectlist[sn2].ptr -> loadaddress)
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115 break;
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116 olen += sectlist[sn2].ptr -> codesize;
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117 cloc += sectlist[sn2].ptr -> codesize;
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118 }
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119
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120 // write a preamble
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121 buf[0] = 0x00;
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122 buf[1] = olen >> 8;
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123 buf[2] = olen & 0xff;
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124 buf[3] = sectlist[sn].ptr -> loadaddress >> 8;
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125 buf[4] = sectlist[sn].ptr -> loadaddress & 0xff;
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126 writebytes(buf, 1, 5, of);
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127 for (; sn < sn2; sn++)
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128 {
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129 if (sectlist[sn].ptr -> flags & SECTION_BSS)
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130 continue;
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131 if (sectlist[sn].ptr -> codesize == 0)
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132 continue;
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133 writebytes(sectlist[sn].ptr -> code, 1, sectlist[sn].ptr -> codesize, of);
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134 }
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135 sn--;
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136 }
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diff changeset
137 // write a postamble
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
138 buf[0] = 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
139 buf[1] = 0x00;
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 buf[2] = 0x00;
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 buf[3] = linkscript.execaddr >> 8;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff changeset
142 buf[4] = 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
143 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
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
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 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
147 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
148 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
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parents:
diff changeset
149 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
150
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
151 for (sn = 0; sn < nsects; sn++)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff changeset
152 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff changeset
153 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
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 // 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
156 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
157 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
158 }
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
159 while (nskips > 0)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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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
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diff changeset
161 // 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
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diff changeset
162 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
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diff changeset
163 nskips--;
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
164 }
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 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
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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
parents:
diff changeset
167 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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168
344
55c1f9a321e9 Add S-record output support to lwlink
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diff changeset
169 void do_output_srec(FILE *of)
55c1f9a321e9 Add S-record output support to lwlink
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diff changeset
170 {
55c1f9a321e9 Add S-record output support to lwlink
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diff changeset
171 const int SRECLEN = 16;
55c1f9a321e9 Add S-record output support to lwlink
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diff changeset
172
55c1f9a321e9 Add S-record output support to lwlink
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diff changeset
173 int sn;
55c1f9a321e9 Add S-record output support to lwlink
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parents: 320
diff changeset
174 int remainingcodebytes;
55c1f9a321e9 Add S-record output support to lwlink
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parents: 320
diff changeset
175
55c1f9a321e9 Add S-record output support to lwlink
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parents: 320
diff changeset
176 int codeaddr;
55c1f9a321e9 Add S-record output support to lwlink
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diff changeset
177 int i;
55c1f9a321e9 Add S-record output support to lwlink
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178 int recaddr = 0;
55c1f9a321e9 Add S-record output support to lwlink
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179 int recdlen = 0;
55c1f9a321e9 Add S-record output support to lwlink
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180 int recsum;
55c1f9a321e9 Add S-record output support to lwlink
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181 int reccnt = -1;
55c1f9a321e9 Add S-record output support to lwlink
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diff changeset
182 unsigned char* sectcode;
55c1f9a321e9 Add S-record output support to lwlink
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parents: 320
diff changeset
183 // no header yet; unnecessary
55c1f9a321e9 Add S-record output support to lwlink
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diff changeset
184
55c1f9a321e9 Add S-record output support to lwlink
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parents: 320
diff changeset
185 for (sn = 0; sn < nsects; sn++) // check all sections
55c1f9a321e9 Add S-record output support to lwlink
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diff changeset
186 {
55c1f9a321e9 Add S-record output support to lwlink
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parents: 320
diff changeset
187 if (sectlist[sn].ptr -> flags & SECTION_BSS) // ignore BSS sections
55c1f9a321e9 Add S-record output support to lwlink
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diff changeset
188 continue;
55c1f9a321e9 Add S-record output support to lwlink
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diff changeset
189 if (sectlist[sn].ptr -> codesize == 0) // ignore empty sections
55c1f9a321e9 Add S-record output support to lwlink
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diff changeset
190 continue;
55c1f9a321e9 Add S-record output support to lwlink
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parents: 320
diff changeset
191
55c1f9a321e9 Add S-record output support to lwlink
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diff changeset
192 recaddr = sectlist[sn].ptr -> loadaddress;
55c1f9a321e9 Add S-record output support to lwlink
William Astle <lost@l-w.ca>
parents: 320
diff changeset
193 remainingcodebytes = sectlist[sn].ptr -> codesize;
55c1f9a321e9 Add S-record output support to lwlink
William Astle <lost@l-w.ca>
parents: 320
diff changeset
194 sectcode = sectlist[sn].ptr -> code;
55c1f9a321e9 Add S-record output support to lwlink
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parents: 320
diff changeset
195
55c1f9a321e9 Add S-record output support to lwlink
William Astle <lost@l-w.ca>
parents: 320
diff changeset
196 while (remainingcodebytes)
55c1f9a321e9 Add S-record output support to lwlink
William Astle <lost@l-w.ca>
parents: 320
diff changeset
197 {
55c1f9a321e9 Add S-record output support to lwlink
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parents: 320
diff changeset
198 recdlen = (SRECLEN>remainingcodebytes)?remainingcodebytes:SRECLEN;
55c1f9a321e9 Add S-record output support to lwlink
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parents: 320
diff changeset
199 recsum = recdlen + 3;
55c1f9a321e9 Add S-record output support to lwlink
William Astle <lost@l-w.ca>
parents: 320
diff changeset
200 codeaddr = recaddr - sectlist[sn].ptr -> loadaddress;
55c1f9a321e9 Add S-record output support to lwlink
William Astle <lost@l-w.ca>
parents: 320
diff changeset
201 fprintf(of, "S1%02X%04X", recdlen + 3, recaddr);
55c1f9a321e9 Add S-record output support to lwlink
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parents: 320
diff changeset
202 for (i = 0; i < recdlen; i++)
55c1f9a321e9 Add S-record output support to lwlink
William Astle <lost@l-w.ca>
parents: 320
diff changeset
203 {
55c1f9a321e9 Add S-record output support to lwlink
William Astle <lost@l-w.ca>
parents: 320
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204 fprintf(of, "%02X", sectcode[codeaddr+i]);
55c1f9a321e9 Add S-record output support to lwlink
William Astle <lost@l-w.ca>
parents: 320
diff changeset
205 recsum += sectcode[codeaddr+i];
55c1f9a321e9 Add S-record output support to lwlink
William Astle <lost@l-w.ca>
parents: 320
diff changeset
206 }
55c1f9a321e9 Add S-record output support to lwlink
William Astle <lost@l-w.ca>
parents: 320
diff changeset
207 recsum += (recaddr >> 8) & 0xFF;
55c1f9a321e9 Add S-record output support to lwlink
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parents: 320
diff changeset
208 recsum += recaddr & 0xFF;
55c1f9a321e9 Add S-record output support to lwlink
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parents: 320
diff changeset
209 fprintf(of, "%02X\r\n", (unsigned char)(~recsum));
55c1f9a321e9 Add S-record output support to lwlink
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parents: 320
diff changeset
210 reccnt += 1;
55c1f9a321e9 Add S-record output support to lwlink
William Astle <lost@l-w.ca>
parents: 320
diff changeset
211 remainingcodebytes -= recdlen;
55c1f9a321e9 Add S-record output support to lwlink
William Astle <lost@l-w.ca>
parents: 320
diff changeset
212 recaddr += recdlen;
55c1f9a321e9 Add S-record output support to lwlink
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parents: 320
diff changeset
213 }
55c1f9a321e9 Add S-record output support to lwlink
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parents: 320
diff changeset
214 }
55c1f9a321e9 Add S-record output support to lwlink
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parents: 320
diff changeset
215 // S9 record as a footer to inform about start addr
55c1f9a321e9 Add S-record output support to lwlink
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parents: 320
diff changeset
216 recsum = 3;
55c1f9a321e9 Add S-record output support to lwlink
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diff changeset
217 recsum += (linkscript.execaddr >> 8) & 0xFF;
55c1f9a321e9 Add S-record output support to lwlink
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parents: 320
diff changeset
218 recsum += linkscript.execaddr & 0xFF;
55c1f9a321e9 Add S-record output support to lwlink
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diff changeset
219 fprintf(of,"S903%04X%02X\r\n",linkscript.execaddr,(unsigned char)(~recsum));
55c1f9a321e9 Add S-record output support to lwlink
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parents: 320
diff changeset
220 }
55c1f9a321e9 Add S-record output support to lwlink
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parents: 320
diff changeset
221
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
222 void do_output_lwex0(FILE *of)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
223 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
224 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
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diff changeset
225 int sn;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
226 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
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diff changeset
227 unsigned char buf[32];
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
228
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
229 // 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
230 for (sn = 0; sn < nsects; sn++)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff changeset
231 {
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
232 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
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parents:
diff changeset
233 {
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
234 // 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
235 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
236 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
237 }
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
238 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
239 nskips = 0;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff changeset
240 codedatasize += sectlist[sn].ptr -> codesize;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff changeset
241 }
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
242
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
243 // 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
244 buf[0] = 'L';
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
245 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
246 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
247 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
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diff changeset
248 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
249 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
250 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
251 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
252 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
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diff changeset
253 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
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diff changeset
254 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
255 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
256 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
257 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
258 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
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diff changeset
259
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
260 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
261 // 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
262 // NOTE: disjoint load addresses will not work correctly!!!!!
180
11b710d231bd Fixed bug handling bss in lwex
lost@l-w.ca
parents: 151
diff changeset
263 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
264 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
265 {
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
266 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
267 {
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
268 // 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
269 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
270 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
271 }
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
272 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
273 {
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
274 // 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
275 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
276 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
277 }
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
278 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
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parents:
diff changeset
279 }
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
280 }
148
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
281
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
282 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
283 {
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
284 b ^= crc[0];
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
285 crc[0] = crc[1];
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
286 crc[1] = crc[2];
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
287 crc[1] ^= b >> 7;
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
288 crc[2] = b << 1;
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
289 crc[1] ^= b >> 2;
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
290 crc[2] ^= b << 6;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
291 b ^= b << 1;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
292 b ^= b << 2;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
293 b ^= b << 4;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
294 if (b & 0x80)
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
295 {
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
296 crc[0] ^= 0x80;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
297 crc[2] ^= 0x21;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
298 }
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
299 }
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
300
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
301
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
302 void do_output_os9(FILE *of)
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
303 {
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
304 int sn;
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
305 int codedatasize = 0;
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
306 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
307 int nameoff;
148
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
308 int i;
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
309
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
310 unsigned char buf[16];
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
311 unsigned char crc[3];
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
312
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
313 // calculate items for the file header
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
314 for (sn = 0; sn < nsects; sn++)
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
315 {
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
316 if (sectlist[sn].ptr -> flags & SECTION_BSS)
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
317 {
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
318 // no output for a BSS section
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
319 bsssize += sectlist[sn].ptr -> codesize;
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
320 continue;
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
321 }
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
322 codedatasize += sectlist[sn].ptr -> codesize;
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
323 }
258
ebda5c96665e Improved stack handling for os9 target in lwlink
William Astle <lost@l-w.ca>
parents: 180
diff changeset
324 bsssize += linkscript.stacksize;
148
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
325
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
326 // now bss size is the data size for the module
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
327 // and codesize is the length of the module minus the module header
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
328 // and CRC
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
329
151
3b58d76ea032 Fix up some minor thinkos in handling the module layout and header
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parents: 148
diff changeset
330 codedatasize += 13; // add in headers
3b58d76ea032 Fix up some minor thinkos in handling the module layout and header
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parents: 148
diff changeset
331 nameoff = codedatasize; // we'll put the name at the end
3b58d76ea032 Fix up some minor thinkos in handling the module layout and header
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parents: 148
diff changeset
332 codedatasize += 3; // add in CRC
148
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
333 codedatasize += strlen(linkscript.name); // add in name length
262
7de7b14ebaee Add support for os9 module edition byte
William Astle <lost@l-w.ca>
parents: 258
diff changeset
334 if (linkscript.edition >= 0)
7de7b14ebaee Add support for os9 module edition byte
William Astle <lost@l-w.ca>
parents: 258
diff changeset
335 codedatasize += 1;
148
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
336
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
337 // output the file header
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
338 buf[0] = 0x87;
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
339 buf[1] = 0xCD;
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
340 buf[2] = (codedatasize >> 8) & 0xff;
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
341 buf[3] = codedatasize & 0xff;
151
3b58d76ea032 Fix up some minor thinkos in handling the module layout and header
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parents: 148
diff changeset
342 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
343 buf[5] = nameoff & 0xff;
148
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
344 buf[6] = (linkscript.modtype << 4) | (linkscript.modlang);
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
345 buf[7] = (linkscript.modattr << 4) | (linkscript.modrev);
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
346 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
347 buf[9] = (linkscript.execaddr >> 8) & 0xff;
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
348 buf[10] = linkscript.execaddr & 0xff;
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
349 buf[11] = (bsssize >> 8) & 0xff;
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
350 buf[12] = bsssize & 0xff;
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
351
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
352 crc[0] = 0xff;
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
353 crc[1] = 0xff;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
354 crc[2] = 0xff;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
355
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
356 os9crc(crc, buf[0]);
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
357 os9crc(crc, buf[1]);
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
358 os9crc(crc, buf[2]);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
359 os9crc(crc, buf[3]);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
360 os9crc(crc, buf[4]);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
361 os9crc(crc, buf[5]);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
362 os9crc(crc, buf[6]);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
363 os9crc(crc, buf[7]);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
364 os9crc(crc, buf[8]);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
365 os9crc(crc, buf[9]);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
366 os9crc(crc, buf[10]);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
367 os9crc(crc, buf[11]);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
368 os9crc(crc, buf[12]);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
369
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
370
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
371 writebytes(buf, 1, 13, of);
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
372
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
373 // output the data
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
374 // 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
375 for (sn = 0; sn < nsects; sn++)
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
376 {
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
377 if (sectlist[sn].ptr -> flags & SECTION_BSS)
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
378 {
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
379 // no output for a BSS section
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
380 continue;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
381 }
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
382 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
383 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
384 os9crc(crc, sectlist[sn].ptr -> code[i]);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
385 }
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
386
151
3b58d76ea032 Fix up some minor thinkos in handling the module layout and header
lost@l-w.ca
parents: 148
diff changeset
387 // output the name
3b58d76ea032 Fix up some minor thinkos in handling the module layout and header
lost@l-w.ca
parents: 148
diff changeset
388 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
389 {
3b58d76ea032 Fix up some minor thinkos in handling the module layout and header
lost@l-w.ca
parents: 148
diff changeset
390 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
391 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
392 }
3b58d76ea032 Fix up some minor thinkos in handling the module layout and header
lost@l-w.ca
parents: 148
diff changeset
393 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
394 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
395 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
396
262
7de7b14ebaee Add support for os9 module edition byte
William Astle <lost@l-w.ca>
parents: 258
diff changeset
397 if (linkscript.edition >= 0)
7de7b14ebaee Add support for os9 module edition byte
William Astle <lost@l-w.ca>
parents: 258
diff changeset
398 {
320
a640ff4ed95f Fix dumbosity in outputting the edition byte in os9 target
William Astle <lost@l-w.ca>
parents: 264
diff changeset
399 buf[0] = linkscript.edition & 0xff;
262
7de7b14ebaee Add support for os9 module edition byte
William Astle <lost@l-w.ca>
parents: 258
diff changeset
400 writebytes(buf, 1, 1, of);
7de7b14ebaee Add support for os9 module edition byte
William Astle <lost@l-w.ca>
parents: 258
diff changeset
401 os9crc(crc, buf[0]);
7de7b14ebaee Add support for os9 module edition byte
William Astle <lost@l-w.ca>
parents: 258
diff changeset
402 }
7de7b14ebaee Add support for os9 module edition byte
William Astle <lost@l-w.ca>
parents: 258
diff changeset
403
148
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
404 crc[0] ^= 0xff;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
405 crc[1] ^= 0xff;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
406 crc[2] ^= 0xff;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
407 writebytes(crc, 1, 3, of);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 0
diff changeset
408 }