Description xavier pouyollon 2014-11-19 11:58:53 EST

Created attachment 248762 [details]
ICC built DKM.

Hi Eugene,

Using this VxWorks DKM built with ICC 64 bits, I can not have return to source code for address ....874.

 <0><108e>: Abbrev Number: 1 (DW_TAG_compile_unit)
    <108f>   DW_AT_comp_dir    : (indirect string, offset: 0xe41): /home/xavier/Datas/installs/vx20141114024242_fr51-ostools_fr51-ostools/workbench-4/workspace/cpp_demo/VxSim64vsb_SIMLINUXicc_LP64_LARGE_SMP
    <1093>   DW_AT_language    : 4      (C++)
    <1094>   DW_AT_name        : (indirect string, offset: 0xecd): /home/xavier/Datas/installs/vx20141114024242_fr51-ostools_fr51-ostools/workbench-4/workspace/cpp_demo/main.cpp
    <1098>   DW_AT_producer    : (indirect string, offset: 0xf3c): Intel(R) C Compiler for Intel(R) 64 applications running on VxWorks* 7, Version 14.0 Build 20140219

    <109c>   DW_AT_low_pc      : 0x0
    <10a4>   DW_AT_ranges      : 0x60   <=== Get relocated

00000000000010a4 R_X86_64_32       .debug_ranges+0x0000000000000060

Proposed patch : https://git.eclipse.org/r/#/c/36707/

Note that it does NOT solve the return to source. There is something else to understand; The file doesn't look that good (see how many sections it has !). However, by looking at .debug_ranges, for ....874, I find AT_ranges to be 0x60, then it should find the right compilation unit aka 108e but instead, it finds 0xA6F. Still looking into this.)