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Hi, The attached tar contains source and a Makefile for two test programs. One program includes an assembly file with two functions in the default .text section, and the other contains a file with one function in .text and another in a section 'foo'. With the first program gdb is able to find the source for the assembly functions, for the other it is not: (gdb) info line bar Line 3 of "test_nosections.S" starts at address 0x400490 <bar> and ends at 0x400491 <bling>. --- (gdb) info line bar No line number information available for address 0x400490 <bar> The problem appears to be that in the case of the multi section asm file gcc doesn't emit DW_AT_low_pc and DW_AT_high_pc for the assembly file compile unit (try 'make dwarf.diff') because they don't make much sense in that case. This means that gdb doesn't load the dwarf symbols for that file and hence can't find source line information (as shown by running 'info sources' before and after 'info line bar' -- try 'make all'). Is this a known issue? Can it be fixed easily? I tested with fairly recent gdb and gcc, but not latest HEAD versions. Thanks, Robert
Attachment:
asm_gdb.tar.gz
Description: asm_gdb.tar.gz
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