[M3devel] the SOLgnu alignment problem finally understood

[Jay K]

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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>>