[patch]: User choice for multiply-defined symbols

[Markus Deuling]

Vladimir Prus schrieb:

>>
>> If GDB debugs a threaded application with a symbol "foo" in every thread, there would be a user
>> choice like:
>>
>> [0] cancel
>> [1] all
>> [2] foo at ../../../../src/gdb/testsuite/gdb.base/multiple_symbols_mod.c:5
>> [3] foo at ../../../../src/gdb/testsuite/gdb.base/multiple_symbols_mod.c:5
>> [4] foo at ../../../../src/gdb/testsuite/gdb.base/multiple_symbols_mod.c:5
> 
> I'm not sure -- are we searching for a symbol in each thread? That seems a little
> bit strange -- did I miss some recent development?
> 
No, this was just to illustrate my example :-) Sorry if this was a confusing statement.
The symbol lookup takes places in the symbol table.

The following is an example from the combined debugger on Cell B./E. with some "SPU threads". I guess this was what 
I had in mind:

(gdb) info sharedlibrary 
>From        To          Syms Read   Shared Object Library
0x0ffc1980  0x0ffdb3d0  Yes         /lib/ld.so.1
0x0fd5dd30  0x0fdbb4b0  Yes         /lib/libm.so.6
0x0fd14560  0x0fd225c0  Yes         /usr/lib/libspe2.so.2
0x0fe4d940  0x0ff6e3b0  Yes         /lib/libc.so.6
0xf7f943e0  0xf7fa3350  Yes         /lib/libpthread.so.0
0x0fa51820  0x0fa56d30  Yes         /lib/librt.so.1
0x0f542170  0x0f551e70  Yes         /lib/libgcc_s.so.1
0x00000030  0x00000960  Yes         break_spu_bin@0x10001f80 <5>
0x00000030  0x00000960  Yes         break_spu_bin@0x10001f80 <6>
0x00000030  0x00000960  Yes         break_spu_bin@0x10001f80 <7>
0x00000030  0x00000960  Yes         break_spu_bin@0x10001f80 <8>
0x00000030  0x00000960  Yes         break_spu_bin@0x10001f80 <9>
0x00000030  0x00000960  Yes         break_spu_bin@0x10001f80 <10>
0x00000030  0x00000960  Yes         break_spu_bin@0x10001f80 <11>
0x00000030  0x00000960  Yes         break_spu_bin@0x10001f80 <12>
(gdb) br foo
Breakpoint 9 at 0x10001800: file break.c, line 38.
(gdb) br foo2
[0] cancel
[1] all
[2] foo2 at break.c:76
[3] foo2 at break_spu_bin.c:46


Please see the testcase attached with an exmaple with a "foo" in each module.

Regards,
Markus

-- 
  Markus Deuling
  GNU Toolchain for Linux on Cell BE
  deuling@de.ibm.com