* [ECOS] implications of placing vectors section after the text section.
@ 2005-09-15 5:18 keshava
2005-09-15 6:26 ` Gary Thomas
0 siblings, 1 reply; 3+ messages in thread
From: keshava @ 2005-09-15 5:18 UTC (permalink / raw)
To: ecos-discuss
Hello,
I currently have this RAM_STARTUP type memory map on a
leon cyclone platfrom ....
SECTION_vectors (ram,0x01000000, LMA_EQ_VMA)
SECTION_text (ram, ALIGN (0x4), LMA_EQ_VMA)
SECTION_fini (ram, ALIGN (0x4), LMA_EQ_VMA)
SECTION_rodata (ram, ALIGN (0x4), LMA_EQ_VMA)
SECTION_rodata1 (ram, ALIGN (0x4), LMA_EQ_VMA)
SECTION_fixup (ram, ALIGN (0x4), LMA_EQ_VMA)
SECTION_gcc_except_table (ram, ALIGN (0x4),
LMA_EQ_VMA)
SECTION_data (ram, ALIGN (0x04), LMA_EQ_VMA)
SECTION_bss (ram, ALIGN (0x8), LMA_EQ_VMA)
I want to know what are the potential implications if
i move the vectors section after the text
section.. if anybody has experiemented with this
configuration.. please let me know if there
are any potential side effects.
This is the configuration i want use...
SECTION_text (ram,0x01000000, LMA_EQ_VMA)
SECTION_vectors (ram, ALIGN (0x4), LMA_EQ_VMA)
SECTION_fini (ram, ALIGN (0x4), LMA_EQ_VMA)
SECTION_rodata (ram, ALIGN (0x4), LMA_EQ_VMA)
SECTION_rodata1 (ram, ALIGN (0x4), LMA_EQ_VMA)
SECTION_fixup (ram, ALIGN (0x4), LMA_EQ_VMA)
SECTION_gcc_except_table (ram, ALIGN (0x4),
LMA_EQ_VMA)
SECTION_data (ram, ALIGN (0x04), LMA_EQ_VMA)
SECTION_bss (ram, ALIGN (0x8), LMA_EQ_VMA)
regards,
keshav
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [ECOS] implications of placing vectors section after the text section.
2005-09-15 5:18 [ECOS] implications of placing vectors section after the text section keshava
@ 2005-09-15 6:26 ` Gary Thomas
2005-09-15 7:41 ` keshava
0 siblings, 1 reply; 3+ messages in thread
From: Gary Thomas @ 2005-09-15 6:26 UTC (permalink / raw)
To: keshava; +Cc: eCos Discussion
On Wed, 2005-09-14 at 08:44 -0700, keshava wrote:
> Hello,
>
> I currently have this RAM_STARTUP type memory map on a
> leon cyclone platfrom ....
>
> SECTION_vectors (ram,0x01000000, LMA_EQ_VMA)
> SECTION_text (ram, ALIGN (0x4), LMA_EQ_VMA)
> SECTION_fini (ram, ALIGN (0x4), LMA_EQ_VMA)
> SECTION_rodata (ram, ALIGN (0x4), LMA_EQ_VMA)
> SECTION_rodata1 (ram, ALIGN (0x4), LMA_EQ_VMA)
> SECTION_fixup (ram, ALIGN (0x4), LMA_EQ_VMA)
> SECTION_gcc_except_table (ram, ALIGN (0x4),
> LMA_EQ_VMA)
> SECTION_data (ram, ALIGN (0x04), LMA_EQ_VMA)
> SECTION_bss (ram, ALIGN (0x8), LMA_EQ_VMA)
>
> I want to know what are the potential implications if
> i move the vectors section after the text
> section.. if anybody has experiemented with this
> configuration.. please let me know if there
> are any potential side effects.
> This is the configuration i want use...
> SECTION_text (ram,0x01000000, LMA_EQ_VMA)
> SECTION_vectors (ram, ALIGN (0x4), LMA_EQ_VMA)
> SECTION_fini (ram, ALIGN (0x4), LMA_EQ_VMA)
> SECTION_rodata (ram, ALIGN (0x4), LMA_EQ_VMA)
> SECTION_rodata1 (ram, ALIGN (0x4), LMA_EQ_VMA)
> SECTION_fixup (ram, ALIGN (0x4), LMA_EQ_VMA)
> SECTION_gcc_except_table (ram, ALIGN (0x4),
> LMA_EQ_VMA)
> SECTION_data (ram, ALIGN (0x04), LMA_EQ_VMA)
> SECTION_bss (ram, ALIGN (0x8), LMA_EQ_VMA)
What architecture/platform is this for? Why do you want
to do this?
n.b. the potential side effects are [most probably] your
eCos application will not work :-(
--
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MLB Associates | Embedded world
------------------------------------------------------------
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [ECOS] implications of placing vectors section after the text section.
2005-09-15 6:26 ` Gary Thomas
@ 2005-09-15 7:41 ` keshava
0 siblings, 0 replies; 3+ messages in thread
From: keshava @ 2005-09-15 7:41 UTC (permalink / raw)
To: eCos Discussion
--- Gary Thomas <gary@mlbassoc.com> wrote:
> On Wed, 2005-09-14 at 08:44 -0700, keshava wrote:
> > Hello,
> >
> > I currently have this RAM_STARTUP type memory map
> on a
> > leon cyclone platfrom ....
> >
> > SECTION_vectors (ram,0x01000000, LMA_EQ_VMA)
> > SECTION_text (ram, ALIGN (0x4), LMA_EQ_VMA)
> > SECTION_fini (ram, ALIGN (0x4), LMA_EQ_VMA)
> > SECTION_rodata (ram, ALIGN (0x4), LMA_EQ_VMA)
> > SECTION_rodata1 (ram, ALIGN (0x4), LMA_EQ_VMA)
> > SECTION_fixup (ram, ALIGN (0x4), LMA_EQ_VMA)
> > SECTION_gcc_except_table (ram, ALIGN (0x4),
> > LMA_EQ_VMA)
> > SECTION_data (ram, ALIGN (0x04), LMA_EQ_VMA)
> > SECTION_bss (ram, ALIGN (0x8), LMA_EQ_VMA)
> >
> > I want to know what are the potential implications
> if
> > i move the vectors section after the text
> > section.. if anybody has experiemented with this
> > configuration.. please let me know if there
> > are any potential side effects.
> > This is the configuration i want use...
> > SECTION_text (ram,0x01000000, LMA_EQ_VMA)
> > SECTION_vectors (ram, ALIGN (0x4), LMA_EQ_VMA)
>
> > SECTION_fini (ram, ALIGN (0x4), LMA_EQ_VMA)
> > SECTION_rodata (ram, ALIGN (0x4), LMA_EQ_VMA)
> > SECTION_rodata1 (ram, ALIGN (0x4), LMA_EQ_VMA)
> > SECTION_fixup (ram, ALIGN (0x4), LMA_EQ_VMA)
> > SECTION_gcc_except_table (ram, ALIGN (0x4),
> > LMA_EQ_VMA)
> > SECTION_data (ram, ALIGN (0x04), LMA_EQ_VMA)
> > SECTION_bss (ram, ALIGN (0x8), LMA_EQ_VMA)
>
> What architecture/platform is this for? Why do you
> want
> to do this?
>
> n.b. the potential side effects are [most probably]
> your
> eCos application will not work :-(
>
Hi Gary,
This is for a sprac V8 based platform.. i've already
tried it out and it works fine :-).. i want to run the
image from RAM using DSUMon (similar to rom monitor)..
reason for doing this is, i want the entry_ponint to
be aligned with start of RAM..
-keshav
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2005-09-15 5:18 [ECOS] implications of placing vectors section after the text section keshava
2005-09-15 6:26 ` Gary Thomas
2005-09-15 7:41 ` keshava
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