1 | #!/bin/sh -f |
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2 | # Generate a source code listing for C or C++ code with assembler code. The |
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3 | # listing is always written to stdout. |
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4 | # Author: Igor Metz <metz@iam.unibe.ch> |
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5 | |
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6 | # Revision 1.4 94/08/26 13:58:27 coxs <coxs@dg-rtp.dg.com> |
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7 | # lister now guesses how to should be configured. Added elf and coff support. |
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8 | # |
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9 | # Revision 1.3 89/12/18 13:58:27 metz |
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10 | # lister must now be configured before it can be used. This is done in the |
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11 | # /bin/sh part of the code. |
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12 | # |
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13 | # |
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14 | # Revision 1.2 89/08/16 17:35:02 metz |
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15 | # Support for SPARC added. |
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16 | # |
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17 | # Revision 1.1 89/08/16 16:49:22 metz |
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18 | # Initial revision |
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19 | # |
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20 | |
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21 | # Requires: gawk (may be it works also with nawk) |
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22 | |
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23 | # usage: lister filename [compiler-options] |
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24 | |
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25 | # Method: |
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26 | # compile the source with -g option to assembler code, then merge the |
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27 | # generated assembler code with the source code. Compiler options |
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28 | # can be supplied on the command line (for example -O) |
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29 | |
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30 | # To install lister, assign one of the supported values to the variable MYSYS: |
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31 | # mc68020 for Motorola 68020 (Sun-3, ..) |
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32 | # mc68030 for Motorola 68030 (Sun-3, ..) |
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33 | # sparc for SPARC (SUN-4, ..) |
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34 | # i386 for i386 (Sun i386, ...) |
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35 | # i386-gnu-linux for i386 (GNU/Linux, ...) |
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36 | |
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37 | # Guess what kind of objects we are creating and thus what type of assembler |
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38 | # symbols to look for |
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39 | |
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40 | ex /tmp/$$.c <<END >/dev/null |
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41 | a |
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42 | main (){} |
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43 | . |
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44 | w |
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45 | q |
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46 | END |
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47 | WD=`pwd` |
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48 | cd /tmp |
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49 | gcc -c $$.c |
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50 | case "`file $$.o`" in |
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51 | *ELF*) MYSYS=elf ;; |
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52 | *COFF*|*BCS*) MYSYS=coff ;; |
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53 | *mc68k*|*M68000*) MYSYS=mc68030 ;; |
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54 | *SPARC*) MYSYS=sparc ;; |
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55 | *386*) MYSYS=i386 ;; |
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56 | esac |
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57 | rm $$.c $$.o |
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58 | cd $WD |
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59 | |
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60 | # uncomment the line you need if the above guesses incorrectly: |
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61 | # MYSYS=mc68020 |
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62 | # MYSYS=mc68030 |
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63 | # MYSYS=sparc |
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64 | # MYSYS=i386 |
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65 | # MYSYS=i386-gnu-linux |
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66 | # MYSYS=`mach` # this will work on Suns with SunOS > 4.0.0 |
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67 | # MYSYS=elf |
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68 | # MYSYS=coff |
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69 | |
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70 | WHOAMI=$0 |
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71 | if [ $# -gt 0 ] ; then |
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72 | FILENAME=$1 |
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73 | shift |
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74 | fi |
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75 | |
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76 | exec gawk -v whoami=$WHOAMI -vsys=$MYSYS -voptions="$*" ' |
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77 | # commandline arguments: |
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78 | # ARGV[0] = "gawk" |
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79 | # ARGV[1] = processid |
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80 | # ARGV[2] = filename |
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81 | BEGIN { |
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82 | if (ARGC != 3) { |
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83 | usage() |
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84 | exit 1 |
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85 | } |
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86 | |
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87 | # Declaration of global variables |
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88 | c_filename = "" |
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89 | asm_filename = "" |
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90 | cmdline = "" |
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91 | asm_code = "" |
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92 | c_code = "" |
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93 | c_lineno = 0 |
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94 | oldlineno = 0 |
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95 | newlineno = 0 |
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96 | ignore_stabd = 0 |
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97 | num_of_fields = 0 |
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98 | |
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99 | # check processor architecture and set sourcecode line_hint accordingly |
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100 | if (sys == "sparc" || sys == "i386") { |
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101 | line_hint = "^[ \t]*\.stabn.*" |
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102 | line_field = 3; |
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103 | line_delimiter = ","; |
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104 | line_offset = 0; |
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105 | } |
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106 | else if (sys == "mc68020" || sys == "mc68030" || sys == "i386-gnu-linux") { |
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107 | line_hint = "^[ \t]*\.stabd.*" |
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108 | line_field = 3; |
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109 | line_delimiter = ","; |
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110 | line_offset = 0; |
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111 | } |
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112 | else if (sys == "elf") { |
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113 | line_hint = "section.*\.line" |
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114 | line_field = 3; |
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115 | line_delimiter = "\t"; |
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116 | line_offset = 0; |
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117 | } |
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118 | else if (sys == "coff") { |
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119 | line_hint = "^[ \t]*ln" |
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120 | line_field = 3; |
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121 | line_delimiter = "\t"; |
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122 | } |
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123 | else { |
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124 | error("Processor type " sys " is not supported yet, sorry") |
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125 | } |
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126 | |
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127 | parse_cmdline() |
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128 | |
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129 | printf("compiling %s to asm code\n", c_filename ) > "/dev/stderr" |
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130 | |
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131 | if (system(cmdline) != 0 ) { |
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132 | error("Compilation of " c_filename " failed") |
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133 | } |
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134 | |
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135 | printf("generating listing\n") > "/dev/stderr" |
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136 | |
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137 | |
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138 | while ( getline asm_code < asm_filename > 0 ) { |
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139 | if ( (ignore_stabd==0) && (asm_code ~ line_hint)) { |
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140 | while ( sys == "elf" && (asm_code !~ "word" && asm_code !~ "byte") && |
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141 | getline asm_code < asm_filename > 0); |
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142 | # source line hint found. Split the line into fields separated by commas. |
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143 | # num_of_fields is 4 for sparc, 3 for m68k |
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144 | num_of_fields = split(asm_code, fields, line_delimiter) |
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145 | newlineno = fields[line_field] + line_offset; |
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146 | |
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147 | if (newlineno > oldlineno) { |
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148 | while ( newlineno > c_lineno && getline c_code < c_filename > 0) { |
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149 | c_lineno++ |
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150 | printf("%4d %s\n", c_lineno, c_code) |
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151 | } |
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152 | oldlineno = newlineno |
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153 | } |
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154 | } |
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155 | else if ( asm_code ~ ".*Ltext[ \t]*$" ) { |
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156 | # filename hint found |
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157 | if ( match(asm_code, c_filename)) { |
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158 | ignore_stabd = 0 |
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159 | } |
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160 | else { |
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161 | ignore_stabd = 1 |
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162 | } |
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163 | } |
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164 | else if ( sys == "elf" && asm_code ~ "section.*\.debug" ) { |
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165 | while ( asm_code !~ "^[ \t]*[.]*previous" && |
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166 | asm_code !~ "\.popsection" && |
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167 | getline asm_code < asm_filename > 0 ); |
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168 | if ( ! (getline asm_code < asm_filename > 0)) break; |
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169 | } |
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170 | else if ( sys == "coff" && asm_code ~ "^[ \t]*sdef" ) { |
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171 | if ( asm_code ~ "\.bf" ) { |
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172 | while ( asm_code !~ "^[ \t]*line" && |
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173 | getline asm_code < asm_filename > 0 ) { |
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174 | num_of_fields = split(asm_code, fields, "\t") |
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175 | line_offset = fields[line_field] - 1; |
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176 | } |
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177 | } |
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178 | while ( asm_code !~ "^[ \t]*endef" && |
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179 | getline asm_code < asm_filename > 0 ) { |
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180 | } |
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181 | if ( ! (getline asm_code < asm_filename > 0)) break; |
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182 | } |
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183 | printf("\t\t\t%s\n", asm_code) |
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184 | } |
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185 | |
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186 | # general cleanup |
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187 | system("/bin/rm " asm_filename) |
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188 | } |
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189 | |
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190 | function usage() { |
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191 | printf("usage: %s filename compiler-options\n", whoami) > "/dev/stderr" |
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192 | } |
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193 | |
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194 | function error(s) { |
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195 | printf("error: %s\n", s) > "/dev/stderr" |
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196 | exit 1 |
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197 | } |
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198 | |
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199 | function parse_cmdline( i) { |
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200 | # construct filenames to use |
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201 | asm_filename = "/tmp/lister" ARGV[1] ".s" |
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202 | ARGV[1] = "" |
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203 | c_filename = ARGV[2] |
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204 | ARGV[2] = "" |
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205 | |
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206 | # construct commandline to use |
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207 | if ( match(c_filename, ".C") || match(c_filename, ".cc") ) { |
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208 | cmdline = "g++" |
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209 | } |
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210 | else if (match(c_filename, ".c") || match(c_filename, ".i")) { |
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211 | cmdline = "gcc" |
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212 | } |
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213 | else { |
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214 | error("unknown extension for file " c_filename) |
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215 | } |
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216 | |
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217 | cmdline = cmdline " -g -S -o " asm_filename |
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218 | |
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219 | # now we append the compiler options specified by the user |
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220 | cmdline = cmdline " " options |
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221 | |
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222 | # last but not least: the name of the file to compile |
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223 | cmdline = cmdline " " c_filename |
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224 | } |
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225 | |
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226 | ' $$ $FILENAME |
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227 | |
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