mungeas issue

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Andrew

• February 26, 2011 08:16

Using CW ARM 1.7 (for v2 also applicable)

mungeas  correctly replace .text, .data, .rodata sections, but not .bss.

This is because compiler put zero-initialized variables to .comm section (not in .bss).

Example (test12.c)

unsigned bss_var;

produces

  .file "test12.c"
  .comm bss_var,4,4
  .ident  "GCC: (GNU) 4.1.1"

If I explicitly define section:

unsigned bss_var __attribute__((section(".bss")));

it produces

  .file "test12.c"
  .global bss_var
  .section  .bss,"aw",%nobits
  .align  2
  .type bss_var, %object
  .size bss_var, 4
bss_var:
  .space  4
  .ident  "GCC: (GNU) 4.1.1"

and mungeas works correctly.

Is there any chance for mungeas to handle such situation without explicitly placing variables to .bss (i.e. editing sources)?

PS. In gcc manual I found options for ARC
    -mtext=text-section
    -mdata=data-section
    -mrodata=readonly-data-section
    but they are not for ARM :(

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• 

  Michael Johnson

  • February 26, 2011 09:17

  Add

  -fno-common

  to compiler additional options - this will be the default for the 2.1 release.

   

  Regards

  Michael

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  Andrew

  • February 26, 2011 10:18

  Thanks. Problem solved.

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