annotate src/cs/layer1/tools/gen_intram.pl @ 516:1ed9de6c90bd

src/g23m-gsm/sms/sms_for.c: bogus malloc removed The new error handling code that was not present in TCS211 blob version contains a malloc call that is bogus for 3 reasons: 1) The memory allocation in question is not needed in the first place; 2) libc malloc is used instead of one of the firmware's proper ways; 3) The memory allocation is made inside a function and then never freed, i.e., a memory leak. This bug was caught in gcc-built FreeCalypso fw projects (Citrine and Selenite) because our gcc environment does not allow any use of libc malloc (any reference to malloc produces a link failure), but this code from TCS3.2 is wrong even for Magnetite: if this code path is executed repeatedly over a long time, the many small allocations made by this malloc call without a subsequent free will eventually exhaust the malloc heap provided by the TMS470 environment, malloc will start returning NULL, and the bogus code will treat it as an error. Because the memory allocation in question is not needed at all, the fix entails simply removing it.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 22 Jul 2018 06:04:49 +0000
parents 945cf7f506b2
children
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945cf7f506b2 src/cs: chipsetsw import from tcs211-fcmodem
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1 #!/usr/bin/perl
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2
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3
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4 if ($#ARGV == -1)
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5 {
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6 die "\nSyntax is gen_intram <C file (with extension)>\n\n";
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7 }
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8
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9 $#ARGV == 0 or die "Incorrect number of parameters";
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10
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11 $c_input_file = @ARGV[0];
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12
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13 # -------------------------------------------------------------------------------
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14 # Remove .c extension and create the new filename for the processed file
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15
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16 @file_name = split /\.c/, $c_input_file;
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17 $c_output_file = join ('', @file_name, "_intram.c");
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18
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19 print "Output file: $c_output_file\n";
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20
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21 # -------------------------------------------------------------------------------
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22 # Generates the C file for internal RAM
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23
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24 open input_stream, $c_input_file
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25 or die "\n\n Input C file $C_input_file cannot be opened: $!\n";
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26
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27 open(output_stream,'>'.$c_output_file)
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28 or die "\n\nCan't open output file $C_output_file: $!";
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29
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30 printf output_stream "/* ----- WARNING - File automatically generated - Do not modify it ----- */\n\n\n\n\n";
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31
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32 $d_internal_found = 0;
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33
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34 # Search for data
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35 while(<input_stream>)
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36 {
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37 chomp $_;
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38
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39 # Search for start comment
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40 if ( /#pragma DUPLICATE_FOR_INTERNAL_RAM_START/ )
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41 {
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42 # DEBUG
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43 #print "Found begin of string\n";
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44 $d_internal_found = 1;
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45
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46 # Found begin internal RAM code, then output up to the end string
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47 while(<input_stream>)
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48 {
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49 chomp $_;
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50 if ( /#pragma DUPLICATE_FOR_INTERNAL_RAM_END/ )
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51 {
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52 # Found end of the internal RAM code, then search for another one
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53 # DEBUG
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54 #print "Found end of string\n";
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55 last;
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56 }
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57 else
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58 {
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59 printf output_stream "%s\n", $_;
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60 # DEBUG
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61 #print "Copied lines - $_\n";
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62 }
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63 }
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65 }
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66 }
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67
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68 close input_stream;
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69 close output_stream;