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[Bug 1001116] Instruct lwIP to use special section for buffers andheap.
- From: bugzilla-daemon at bugs dot ecos dot sourceware dot org
- To: ecos-bugs at ecos dot sourceware dot org
- Date: Sun, 30 Jan 2011 20:11:52 +0000
- Subject: [Bug 1001116] Instruct lwIP to use special section for buffers andheap.
- Auto-submitted: auto-generated
- References: <bug-1001116-13@http.bugs.ecos.sourceware.org/>
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--- Comment #27 from Ilija Kocho <ilijak@siva.com.mk> 2011-01-30 20:11:49 GMT ---
(In reply to comment #26)
> (In reply to comment #25)
> > (In reply to comment #24)
> > > (In reply to comment #22)
>
> [snip]
>
> > > > The box will be unchecked until booldata in your HAL (CYGDAT_.*_NAME)
> > > > is not proper section name. However, this was quickly tested only.
> > >
> > > I have noticed it, but I allowed to occur it since I have seen similar
> > > behavior in some other CDLs.
> >
> > Ilija, I have managed this with:
>
> [snip]
>
> > But the difficulty to read/understand came back :-) However, it checks
> > that NAME is string and at the least it looks like section name.
> >
> > > Actually I tried something similar
> > >
> > > cdl_option CYGOPT_LWIP_MEM_SECTION {
> > > ...
> > > default_value is_active(CYGDAT_LWIP_MEM_SECTION_NAME)
> > > active_if CYGDAT_LWIP_MEM_SECTION_NAME
> >
> > I will try it in CT.
>
> Ilija, I have tested it and it looks for me like "golden mean".
>
> > > But I'm not sure if it depends on the order the packages are processed/
> > > applied. FYI it worked for my test case (select default template then
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> It's important to me and I would stay on it.
>
> > > add lwip).
>
> [snip]
>
> > But I myself have argued for simplicity.
>
> This is strong argument :-)
>
> > Can you try it on your target?
> ^^^^^^^^^^^^^^
> Please, forget it.
>
> Well, let's stop on this point of survey. What do you think?
Seems we came to conclusion. As I understand CYGSEM_LWIP_MEM_SECTION_NAME is
not in 2 steps (with CYGHWR_HAL_MEM_SECTION_NAME) but simple as before, only
enclosed in CYGOPT_LWIP_MEM_PLF_SPEC.
Something like this?
--- lwip_net.tcl ---
cdl_component CYGOPT_LWIP_MEM_PLF_SPEC {
display "Platform specific memory setting"
flavor none
no_define
cdl_option CYGSEM_LWIP_MEM_SECTION {
display "Place lwIP buffers and heap in special memory section."
flavor bool
default_value 1
active_if CYGDAT_LWIP_MEM_SECTION_NAME
description "..."
}
}
--- hal...cdl example---
cdl_option CYGDAT_LWIP_MEM_SECTION_NAME {
flavor data
active_if CYGPKG_NET_LWIP
parent CYGOPT_LWIP_MEM_PLF_SPEC
default_value { "\".ahb_bss\"" }
legal_values { "\".ahb_bss\"" "\".ahb_0\"" }
display "Memory section for lwIP buffers."
description " ... Sections are provided by LPC17xx platform HAL."
}
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