we use gcc on sparc as well.
This mdb module compiles and works fine with gcc & sparc.
When I add -shared on the x86 platform, I get...
/bin/gcc -L/vob/signalware/Master/library -m64 -fno-builtin
-DOMNI_UNIX -D_KERNEL -DMP_SSRV4 -DAMD64_ARCH -DSOL10 -I/vob/common/src
-I/vob/signalware/../common/src -I. -I..
-I/vob/signalware//Master/Ft/inc -I/vob/signalware//Master/Ft/inc
-I/vob/signalware//Master/cust_inc -I/vob/signalware//Master/cust_inc
-I/vob/signalware//Master/priv_inc -I/vob/signalware//Master/priv_inc
-I../../../../libulcm/inc -I../../include -I/usr/X/include -Wall
-std=gnu99 -O -DAMD64_ARCH -o mr_mdb.so mr_mdb.c -G -shared
-mno-red-zone -mcmodel=kernel
Text relocation remains referenced
against symbol offset in file
<unknown> 0x20 /var/tmp//cckausVW.o
<unknown> 0x50 /var/tmp//cckausVW.o
<unknown> 0x80 /var/tmp//cckausVW.o
<unknown> 0xa8 /var/tmp//cckausVW.o
<unknown> 0x860 /var/tmp//cckausVW.o
<unknown> 0x870 /var/tmp//cckausVW.o
<unknown> 0x878 /var/tmp//cckausVW.o
<unknown> 0x888 /var/tmp//cckausVW.o
<unknown> 0x898 /var/tmp//cckausVW.o
<unknown> 0x8a0 /var/tmp//cckausVW.o
.
.
.
mdb_printf 0x3a6 /var/tmp//cckausVW.o
mdb_printf 0x3e4 /var/tmp//cckausVW.o
mdb_printf 0x3ff /var/tmp//cckausVW.o
mdb_printf 0x417 /var/tmp//cckausVW.o
mdb_printf 0x432 /var/tmp//cckausVW.o
mdb_printf 0x44d /var/tmp//cckausVW.o
mdb_printf 0x468 /var/tmp//cckausVW.o
mdb_printf 0x483 /var/tmp//cckausVW.o
mdb_printf 0x50e /var/tmp//cckausVW.o
mdb_printf 0x529 /var/tmp//cckausVW.o
mdb_printf 0x545 /var/tmp//cckausVW.o
mdb_printf 0x560 /var/tmp//cckausVW.o
mdb_printf 0x57c /var/tmp//cckausVW.o
mdb_printf 0x597 /var/tmp//cckausVW.o
mdb_printf 0x5b3 /var/tmp//cckausVW.o
mdb_printf 0x5cf /var/tmp//cckausVW.o
mdb_printf 0x5e0 /var/tmp//cckausVW.o
ld: fatal: relocations remain against allocatable but non-writable
sections
collect2: ld returned 1 exit status
-----Original Message-----
From: Dmitry.Samersoff at Sun.COM [mailto:dmitry.samers...@sun.com]
Sent: Thursday, February 19, 2009 1:30 PM
To: William Reich
Cc: Jonathan Adams; mdb-discuss at opensolaris.org; Richmond Tuttle
Subject: Re: mdb dmod - compile with gcc on x86 ?
William,
Do you use gcc on sparc to build the module?
What kind of unresolved symbols -shared cause?
I think mdb has been build using Sun Studio compiler so it's better to
use Sun CC to build the module.
-Dmitry.
William Reich wrote:
>
> on my compiler, -fPIC and -mcmodel=kernel are not allowed together.
> The -shared option resulted on lots of unresolved symbols.
>
> The -Xlinker "-G" resulted in the same relocation error...
>
> I also tried the suggestion of Jonathan. Same relocation error...
> ( I would have thought a mdb module was a kernel module... )
>
>
> wr
>
> +++++++++++++++++++++++++++++++++++
>
>>> /bin/gcc -L/vob/signalware/Master/library -m64 -fno-builtin
>>> -DOMNI_UNIX \
>>> -D_KERNEL -DMP_SSRV4 -mno-red-zone \
> ^^^^^^^^^^^^^
>>> -mcmodel=kernel -DAMD64_ARCH -DSOL10 \
> ^^^^^^^^^^^^^^^
>
> Those are your problem; this isn't a kernel module, so why are you
> using the kernel model?
>
> Cheers,
> - jonathan
>
>
> -----Original Message-----
> From: Dmitry.Samersoff at Sun.COM [mailto:Dmitry.Samersoff at Sun.COM]
> Sent: Thursday, February 19, 2009 1:05 PM
> To: William Reich
> Cc: Bhaskar.Sarkar at Sun.COM; mdb-discuss at opensolaris.org; Richmond
> Tuttle
> Subject: Re: [mdb-discuss] mdb dmod - compile with gcc on x86 ?
>
> William,
>
> Try to change GCC command line:
> add -fPIC -shared
> and replace -G to
> -Xlinker "-G"
>
>
> William Reich wrote:
>>
>> my source does not contain a function named main().
>>
>> ...only has the external function _mdb_init().
>> All other functions in the file are static.
>>
>> wr
>>
>> -----Original Message-----
>> From: Bhaskar.Sarkar at Sun.COM [mailto:Bhaskar.Sarkar at Sun.COM]
>> Sent: Thursday, February 19, 2009 12:09 PM
>> To: William Reich
>> Cc: mdb-discuss at opensolaris.org; Richmond Tuttle
>> Subject: Re: [mdb-discuss] mdb dmod - compile with gcc on x86 ?
>>
>> William Reich wrote:
>>>
>>> I am trying to compile a dmod for mdb using gcc on a 64bit x86
>>> machine.
>>>
>>> The compile goes ok, but the resulting file does not load into mdb.
>>>
>>> Anybody know the solution to this puzzle ?
>>>
>>> thanks
>>>
>>> wr
>> You should not have a main() function in your module.
>> Your only interface to mdb is via _mdb_init()
>>
>> HIH,
>> Bhaskar
>>
>>> ++++++++++++
>>>
>>>
>>> /bin/gcc -L/vob/signalware/Master/library -m64 -fno-builtin
>>> -DOMNI_UNIX \
>>> -D_KERNEL -DMP_SSRV4 -mno-red-zone \ -mcmodel=kernel -DAMD64_ARCH
>>> -DSOL10 \
>>> -I/vob/common/src \
>>> -Wall -std=gnu99 -O -G -o mr_mdb.so mr_mdb.c
>>>
>>>
>>>
>>> # mdb -k
>>> Loading modules: [ unix krtld genunix specfs dtrace cpu.generic
>>> cpu_ms.AuthenticAMD.15 uppc pcplusmp ufs mpt ip hook neti sctp a rp
>>> usba fcp fctl nca lofs md cpc random crypto zfs fcip logindmux ptm
>>> sppp nfs ipc ]
>>>
>>>> ::load ./mr_mdb.so
>>> mdb: ld.so.1: mdb: fatal: relocation error: R_AMD64_PC32: file
>>> ./mr_mdb.so: symbol main: value 0x28001df8e34 does not fit
>>> _______________________________________________
>>> mdb-discuss mailing list
>>> mdb-discuss at opensolaris.org
>> _______________________________________________
>> mdb-discuss mailing list
>> mdb-discuss at opensolaris.org
>
>
> --
> Dmitry Samersoff
> J2SE Sustaining team, SPB04
> * There will come soft rains ...
--
Dmitry Samersoff
J2SE Sustaining team, SPB04
* There will come soft rains ...
