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annotate lwlink/output.c @ 425:9f0448022f1f

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Fix address overflows in SREC and IHEX file formats Thanks to hider <stego@satx.rr.com> for pointing out an overflow that caused 16 bit addresses to be output as 5 hex digits in cases where an address counter wrapped. Simply mask the addresses down to 16 bits.
author William Astle <lost@l-w.ca>
date Thu, 03 Nov 2016 21:36:17 -0600
parents 55c1f9a321e9
children 1744f2d1a821
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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
346966cffeef Clean up various warnings when building under -Wall
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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
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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
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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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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
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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
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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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diff changeset
149 int 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
150
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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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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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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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
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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
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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
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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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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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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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162 writebytes("", 1, 1, 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
163 nskips--;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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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
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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
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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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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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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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182 unsigned char* sectcode;
55c1f9a321e9 Add S-record output support to lwlink
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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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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
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diff changeset
193 remainingcodebytes = sectlist[sn].ptr -> codesize;
55c1f9a321e9 Add S-record output support to lwlink
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parents: 320
diff changeset
194 sectcode = sectlist[sn].ptr -> code;
55c1f9a321e9 Add S-record output support to lwlink
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diff changeset
195
55c1f9a321e9 Add S-record output support to lwlink
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parents: 320
diff changeset
196 while (remainingcodebytes)
55c1f9a321e9 Add S-record output support to lwlink
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parents: 320
diff changeset
197 {
55c1f9a321e9 Add S-record output support to lwlink
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diff changeset
198 recdlen = (SRECLEN>remainingcodebytes)?remainingcodebytes:SRECLEN;
55c1f9a321e9 Add S-record output support to lwlink
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diff changeset
199 recsum = recdlen + 3;
55c1f9a321e9 Add S-record output support to lwlink
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parents: 320
diff changeset
200 codeaddr = recaddr - sectlist[sn].ptr -> loadaddress;
425
9f0448022f1f Fix address overflows in SREC and IHEX file formats
William Astle <lost@l-w.ca>
parents: 344
diff changeset
201 fprintf(of, "S1%02X%04X", recdlen + 3, recaddr & 0xffff);
344
55c1f9a321e9 Add S-record output support to lwlink
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diff changeset
202 for (i = 0; i < recdlen; i++)
55c1f9a321e9 Add S-record output support to lwlink
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parents: 320
diff changeset
203 {
55c1f9a321e9 Add S-record output support to lwlink
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parents: 320
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204 fprintf(of, "%02X", sectcode[codeaddr+i]);
55c1f9a321e9 Add S-record output support to lwlink
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parents: 320
diff changeset
205 recsum += sectcode[codeaddr+i];
55c1f9a321e9 Add S-record output support to lwlink
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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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diff changeset
208 recsum += recaddr & 0xFF;
55c1f9a321e9 Add S-record output support to lwlink
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diff changeset
209 fprintf(of, "%02X\r\n", (unsigned char)(~recsum));
55c1f9a321e9 Add S-record output support to lwlink
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diff changeset
210 reccnt += 1;
55c1f9a321e9 Add S-record output support to lwlink
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parents: 320
diff changeset
211 remainingcodebytes -= recdlen;
55c1f9a321e9 Add S-record output support to lwlink
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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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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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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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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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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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226 int codedatasize = 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
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
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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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diff changeset
231 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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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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diff changeset
233 {
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
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
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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
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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
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diff changeset
238 codedatasize += nskips;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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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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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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diff changeset
241 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
242
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
243 // output the file header
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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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
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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
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diff changeset
247 buf[3] = 'X';
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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parents: 0
diff changeset
291 b ^= b << 1;
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
292 b ^= b << 2;
08fb11004df9 Initial pass at OS9 module support for lwlink
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parents: 0
diff changeset
293 b ^= b << 4;
08fb11004df9 Initial pass at OS9 module support for lwlink
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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
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parents: 0
diff changeset
296 crc[0] ^= 0x80;
08fb11004df9 Initial pass at OS9 module support for lwlink
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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
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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
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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
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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
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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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diff changeset
329
151
3b58d76ea032 Fix up some minor thinkos in handling the module layout and header
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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
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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
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parents: 0
diff changeset
354 crc[2] = 0xff;
08fb11004df9 Initial pass at OS9 module support for lwlink
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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
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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 }