[M3devel] the SOLgnu alignment problem finally understood

[Jay K]

 < confused 
> configured 
oops



----------------------------------------
> From: jay.krell at cornell.edu
> To: wagner at elegosoft.com
> Date: Mon, 3 Aug 2009 22:31:04 +0000
> CC: m3devel at elegosoft.com
> Subject: Re: [M3devel] the SOLgnu alignment problem finally understood
>
>
> ps: building RC2 with my /usr/local/bin/gcc is also viable
> That is how things were working.
> It is confused to use /usr/ccs/bin/as, and the -g doesn't get passed down to it I think it was.
> I might not get anything else in for ~two days..
>
>
> - Jay
>
>
> ----------------------------------------
>> From: jay.krell at cornell.edu
>> To: wagner at elegosoft.com
>> CC: m3devel at elegosoft.com
>> Subject: RE: the SOLgnu alignment problem finally understood
>> Date: Mon, 3 Aug 2009 22:29:48 +0000
>>
>>
>> cm3cg's lack of support for -g or -gdwarf etc. shouldn't mean gcc/gas doesn't support -g.
>> Yes, -g is rare in the config files. This was perhaps an oversight.
>> This seems like a gcc or gas bug, but oh well.
>> My gcc is old 3.x.
>> Note that on some systems -gstabs isn't supported, like PA64_HPUX I think.
>> But using cm3cg -g tends to "internal compiler error" and such.
>> A problem for the potential future, things are adequate for now.
>>
>> - Jay
>>
>>
>> ----------------------------------------
>>> Date: Mon, 3 Aug 2009 13:26:28 +0200
>>> From: wagner at elegosoft.com
>>> To: jay.krell at cornell.edu
>>> CC: m3devel at elegosoft.com
>>> Subject: Re: the SOLgnu alignment problem finally understood
>>>
>>> We had similar problems before with -g. CM3 never supported dwarf
>>> debugging format, just stabs. I think we changed all -g occurences
>>> in the config files to -gstabs some years ago.
>>>
>>> It sounds like a small fix in the config files after all, correct?
>>> At least for this RC?
>>>
>>> Olaf
>>>
>>> Quoting Jay K :
>>>
>>>>
>>>> Here finally is a small example of the SOLgnu problem I've been
>>>> looking at it.
>>>>
>>>>
>>>> It is specific to using /usr/sfw/bin/gcc -g to asssemble.
>>>> No problem without -g, no problem with /usr/bin/cc, no problem with
>>>> whatever I built in /usr/local/bin/gcc, no problem if you assemble
>>>> with anything else and then link with /usr/sfw/bin/gcc -g.
>>>>
>>>>
>>>> -bash-3.00$ cat 4.c asm.s
>>>>
>>>> 4.c
>>>> void Asm(void);
>>>> #include
>>>>
>>>> int main()
>>>> {
>>>> Asm();
>>>> printf("\n");
>>>> return 0;
>>>> }
>>>>
>>>> asm.s
>>>>
>>>> .section ".text",#alloc,#execinstr
>>>> .align 4
>>>> .global Asm
>>>> .type Asm,#function
>>>> Asm:
>>>> retl
>>>> nop
>>>> .size Asm, (.-Asm)
>>>>
>>>>
>>>> Not all possibilities shown here:
>>>>
>>>>
>>>> -bash-3.00$ /usr/local/bin/gcc -g asm.s 4.c
>>>> ok
>>>>
>>>>
>>>> -bash-3.00$ /usr/sfw/bin/gcc -g asm.s 4.c
>>>> ld: fatal: relocation error: R_SPARC_32: file /var/tmp//ccICgvny.o:
>>>> symbol : offset 0xfeed139e is non-aligned
>>>> ld: fatal: relocation error: R_SPARC_32: file /var/tmp//ccICgvny.o:
>>>> symbol : offset 0xfeed14c2 is non-aligned
>>>> ld: fatal: relocation error: R_SPARC_32: file /var/tmp//ccICgvny.o:
>>>> symbol : offset 0xfeed15f6 is non-aligned
>>>> collect2: ld returned 1 exit status
>>>>
>>>>
>>>> -bash-3.00$ /usr/bin/cc -g asm.s 4.c
>>>> asm.s:
>>>> 4.c:
>>>> ok
>>>>
>>>> -bash-3.00$ /usr/bin/cc asm.s 4.c
>>>> asm.s:
>>>> 4.c:
>>>> ok
>>>>
>>>>
>>>> -bash-3.00$ /usr/sfw/bin/gcc asm.s 4.c
>>>> ok
>>>>
>>>>
>>>> -bash-3.00$ /usr/local/bin/gcc asm.s 4.c
>>>> ok
>>>>
>>>>
>>>> -bash-3.00$ /usr/sfw/bin/gcc -g -c asm.s
>>>> ok but haven't linked yet, input to later steps
>>>>
>>>>
>>>> -bash-3.00$ /usr/bin/cc asm.o 4.c
>>>> ld: fatal: relocation error: R_SPARC_32: file asm.o: symbol : offset 0x
>>>> ff10148e is non-aligned
>>>> ld: fatal: relocation error: R_SPARC_32: file asm.o: symbol : offset 0x
>>>> ff1014ca is non-aligned
>>>> ld: fatal: relocation error: R_SPARC_32: file asm.o: symbol : offset 0x
>>>> ff1015be is non-aligned
>>>>
>>>>
>>>> -bash-3.00$ /usr/local/bin/gcc asm.o 4.c
>>>> ld: fatal: relocation error: R_SPARC_32: file asm.o: symbol : offset 0x
>>>> feee1213 is non-aligned
>>>> ld: fatal: relocation error: R_SPARC_32: file asm.o: symbol : offset 0x
>>>> feee122a is non-aligned
>>>> ld: fatal: relocation error: R_SPARC_32: file asm.o: symbol : offset 0x
>>>> feee122e is non-aligned
>>>> ld: fatal: relocation error: R_SPARC_32: file asm.o: symbol : offset 0x
>>>> feee1232 is non-aligned
>>>> ld: fatal: relocation error: R_SPARC_32: file asm.o: symbol : offset 0x
>>>> feee126e is non-aligned
>>>> collect2: ld returned 1 exit status
>>>>
>>>>
>>>>
>>>> -bash-3.00$ /usr/local/bin/gcc -g -c asm.s
>>>> ok, try linking with others
>>>>
>>>>
>>>> -bash-3.00$ /usr/bin/cc asm.o 4.c
>>>> ok
>>>>
>>>>
>>>>
>>>> -bash-3.00$ /usr/sfw/bin/gcc asm.o 4.c
>>>> ok
>>>>
>>>>
>>>> Actually even -gstabs or -gstabs+ instead of -g make it work.
>>>> -g resolves to -gdwarf2.
>>>>
>>>>
>>>> - Jay
>>>
>>>
>>>
>>> --
>>> Olaf Wagner -- elego Software Solutions GmbH
>>> Gustav-Meyer-Allee 25 / Gebäude 12, 13355 Berlin, Germany
>>> phone: +49 30 23 45 86 96 mobile: +49 177 2345 869 fax: +49 30 23 45 86 95
>>> http://www.elegosoft.com | Geschäftsführer: Olaf Wagner | Sitz: Berlin
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>>>