users Digest, Vol 112, Issue 8
Gedare Bloom
gedare at rtems.org
Sun Jan 17 15:30:01 UTC 2016
E-mail it directly to me, and CC joel at rtems.org and chrisj at rtems.org
On Sun, Jan 17, 2016 at 10:27 AM, Sambeet Panigrahi
<sambeet161616 at gmail.com> wrote:
> Hi,
> I was following the instructions from
>
> https://devel.rtems.org/wiki/GSoC/GettingStarted
>
> page.I have created the patch and the snapshot of modified Hello World
> program.Can someone suggest to me where do I submit the proof.
>
> On Sat, Jan 16, 2016 at 5:30 PM, <users-request at rtems.org> wrote:
>>
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>> Today's Topics:
>>
>> 1. About "Add per-section compilation and linking support" and
>> libdl (?????? ???????)
>> 2. Re: About "Add per-section compilation and linking support"
>> and libdl (Chris Johns)
>>
>>
>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Fri, 15 Jan 2016 18:15:33 +0300
>> From: ?????? ??????? <sergkruglov at bk.ru>
>> To: <users at rtems.org>
>> Subject: About "Add per-section compilation and linking support" and
>> libdl
>> Message-ID: <FBE2DD8DEA214E2FBEF239A3F9F6B20A at NOK>
>> Content-Type: text/plain; charset="utf-8"
>>
>> I succesfully use libdl with mips processors (R300 with small correct
>> resole mips16 relocs).
>> RTEMS 4.11 and 4.12
>> 1. After patch rtems ?Add per-section compilation and linking support"
>> image size reduce 811400 ?> 653864.
>> It?s OK, but now rap file generate incorrectly and not load.
>> Test program only get and print lists tasks, semaphores, messages,
>> periiods.
>> Without per-section compilation symbol map:
>> size align offset
>> .text: 2000 16 0x00000054 (84)
>> .const: 368 0 0x00000824 (2084)
>> .ctor: 0 0 0x00000994 (2452)
>> .dtor: 0 0 0x00000994 (2452)
>> .data: 0 16 0x00000994 (2452)
>> .bss: 0 16 -
>> strtab: 82 - 0x00000994 (2452)
>> symtab: 48 - 0x000009e6 (2534)
>> relocs: 1332 - 0x00000a16 (2582)
>> Details: 0x00000020 (32)
>> No details
>> Strings: 0x00000994 (2452) size: 82
>> 0 (0x000000):
>> 1 (0x000001): rtems
>> 2 (0x000007): _Heap_Get_information
>> 3 (0x00001d): _Heap_Iterate
>> 4 (0x00002b): _Protected_heap_Get_information
>> 5 (0x00004b): rtems
>> 6 (0x000051):
>> Symbols: 0x000009e6 (2534) size: 48
>> data section value name
>> 0: 0x0012 .text 0x00000000 rtems
>> 1: 0x0012 .text 0x00000000 _Heap_Get_information
>> 2: 0x0012 .text 0x00000000 _Heap_Iterate
>> 3: 0x0012 .text 0x00000000
>> _Protected_heap_Get_information
>>
>> With per-section compilation symbol map:
>> size align offset
>> .text: 2404 16 0x00000054 (84)
>> .const: 368 0 0x000009b8 (2488)
>> .ctor: 0 0 0x00000b28 (2856)
>> .dtor: 0 0 0x00000b28 (2856)
>> .data: 4 16 0x00000b28 (2856)
>> .bss: 0 16 -
>> strtab: 156 - 0x00000b2c (2860)
>> symtab: 96 - 0x00000bc8 (3016)
>> relocs: 1488 - 0x00000c28 (3112)
>> Details: 0x00000020 (32)
>> No details
>> Strings: 0x00000b2c (2860) size: 156
>> 0 (0x000000):
>> 1 (0x000001): rtems
>> 2 (0x000007): rtems_object_get_name
>> 3 (0x00001d): _Heap_Get_information
>> 4 (0x000033): _Heap_Iterate
>> 5 (0x000041): _Objects_Get_name_as_string
>> 6 (0x00005d): _Protected_heap_Get_information
>> 7 (0x00007d): putchar
>> 8 (0x000085): BSP_output_char
>> 9 (0x000095): rtems
>> 10 (0x00009b):
>> Symbols: 0x00000bc8 (3016) size: 96
>> data section value name
>> 0: 0x0012 .text 0x00000000 rtems
>> 1: 0x0012 .text 0x00000000 rtems_object_get_name
>> 2: 0x0012 .text 0x00000000 _Heap_Get_information
>> 3: 0x0012 .text 0x00000000 _Heap_Iterate
>> 4: 0x0012 .text 0x00000000 _Objects_Get_name_as_string
>> 5: 0x0012 .text 0x00000000
>> _Protected_heap_Get_information
>> 6: 0x0012 .text 0x00000000 putchar
>> 7: 0x0011 .data 0x00000000 BSP_output_char
>>
>> Dynamic loader say: Duplicate symbol BSP_output_char
>> and stop loading.
>>
>> 2. Also after allocate .bss section it not zeroed and static uninitialized
>> symbols have undefined value.
>> In standart linker bss section zeroed in startup procedure.
>> May be need memset after allocate bss section?
>>
>> Sorry for my english
>> With best reagrds, Serg Kruglov
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>>
>> ------------------------------
>>
>> Message: 2
>> Date: Sat, 16 Jan 2016 16:07:35 +1100
>> From: Chris Johns <chrisj at rtems.org>
>> To: ?????? ??????? <sergkruglov at bk.ru>, users at rtems.org
>> Subject: Re: About "Add per-section compilation and linking support"
>> and libdl
>> Message-ID: <5699D017.8090109 at rtems.org>
>> Content-Type: text/plain; charset=UTF-8
>>
>> On 16/01/2016 2:15 AM, ?????? ??????? wrote:
>> > I succesfully use libdl with mips processors (R300 with small correct
>> > resole mips16 relocs).
>>
>> Do you have a patch for this?
>>
>> > RTEMS 4.11 and 4.12
>> > 1. After patch rtems ?Add per-section compilation and linking support"
>> > image size reduce 811400 ?> 653864.
>> > It?s OK, but now rap file generate incorrectly and not load.
>> > Test program only get and print lists tasks, semaphores, messages,
>> > periiods.
>> > Without per-section compilation symbol map:
>> > size align offset
>> > .text: 2000 16 0x00000054 (84)
>> > .const: 368 0 0x00000824 (2084)
>> > .ctor: 0 0 0x00000994 (2452)
>> > .dtor: 0 0 0x00000994 (2452)
>> > .data: 0 16 0x00000994 (2452)
>> > .bss: 0 16 -
>> > strtab: 82 - 0x00000994 (2452)
>> > symtab: 48 - 0x000009e6 (2534)
>> > relocs: 1332 - 0x00000a16 (2582)
>> > Details: 0x00000020 (32)
>> > No details
>> > Strings: 0x00000994 (2452) size: 82
>> > 0 (0x000000):
>> > 1 (0x000001): rtems
>> > 2 (0x000007): _Heap_Get_information
>> > 3 (0x00001d): _Heap_Iterate
>> > 4 (0x00002b): _Protected_heap_Get_information
>> > 5 (0x00004b): rtems
>> > 6 (0x000051):
>> > Symbols: 0x000009e6 (2534) size: 48
>> > data section value name
>> > 0: 0x0012 .text 0x00000000 rtems
>> > 1: 0x0012 .text 0x00000000 _Heap_Get_information
>> > 2: 0x0012 .text 0x00000000 _Heap_Iterate
>> > 3: 0x0012 .text 0x00000000
>> > _Protected_heap_Get_information
>> >
>> > With per-section compilation symbol map:
>> > size align offset
>> > .text: 2404 16 0x00000054 (84)
>> > .const: 368 0 0x000009b8 (2488)
>> > .ctor: 0 0 0x00000b28 (2856)
>> > .dtor: 0 0 0x00000b28 (2856)
>> > .data: 4 16 0x00000b28 (2856)
>> > .bss: 0 16 -
>> > strtab: 156 - 0x00000b2c (2860)
>> > symtab: 96 - 0x00000bc8 (3016)
>> > relocs: 1488 - 0x00000c28 (3112)
>> > Details: 0x00000020 (32)
>> > No details
>> > Strings: 0x00000b2c (2860) size: 156
>> > 0 (0x000000):
>> > 1 (0x000001): rtems
>> > 2 (0x000007): rtems_object_get_name
>> > 3 (0x00001d): _Heap_Get_information
>> > 4 (0x000033): _Heap_Iterate
>> > 5 (0x000041): _Objects_Get_name_as_string
>> > 6 (0x00005d): _Protected_heap_Get_information
>> > 7 (0x00007d): putchar
>> > 8 (0x000085): BSP_output_char
>> > 9 (0x000095): rtems
>> > 10 (0x00009b):
>> > Symbols: 0x00000bc8 (3016) size: 96
>> > data section value name
>> > 0: 0x0012 .text 0x00000000 rtems
>> > 1: 0x0012 .text 0x00000000 rtems_object_get_name
>> > 2: 0x0012 .text 0x00000000 _Heap_Get_information
>> > 3: 0x0012 .text 0x00000000 _Heap_Iterate
>> > 4: 0x0012 .text 0x00000000 _Objects_Get_name_as_string
>> > 5: 0x0012 .text 0x00000000
>> > _Protected_heap_Get_information
>> > 6: 0x0012 .text 0x00000000 putchar
>> > 7: 0x0011 .data 0x00000000 BSP_output_char
>> >
>> > Dynamic loader say: Duplicate symbol BSP_output_char
>> > and stop loading.
>>
>> This is strange. I suspect a bug has been triggered.
>>
>> >
>> > 2. Also after allocate .bss section it not zeroed and static
>> > uninitialized symbols have undefined value.
>> > In standart linker bss section zeroed in startup procedure.
>> > May be need memset after allocate bss section?
>> >
>>
>> I suspect the bug is causing the same problem.
>>
>> Can you please raise a ticket in Trac and document the configure command
>> line for RTEMS plus attach an example main for RTEMS, the app code and a
>> script to build them. I can then take a closer look.
>>
>> Thanks
>> Chris
>>
>>
>> ------------------------------
>>
>> Subject: Digest Footer
>>
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>> ------------------------------
>>
>> End of users Digest, Vol 112, Issue 8
>> *************************************
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