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Re: Help! Cannot simulate
- From: Andrew Lunn <andrew at lunn dot ch>
- To: Michele Portolan <michele dot portolan at imag dot fr>
- Cc: ecos-discuss at ecos dot sourceware dot org
- Date: Thu, 28 Jun 2007 00:42:40 +0200
- Subject: Re: [ECOS] Help! Cannot simulate
- References: <4680B7FC.1080006@imag.fr>
On Tue, Jun 26, 2007 at 08:53:48AM +0200, Michele Portolan wrote:
> Hello everyone,
> I have eCos running nicely on my FPGA-implemented Leon2, but I cannot
> simulate in on modelsim.
> In fact <cyg_hal_invoke_constructors> does not seem to end correctly: each
> time it cause an acces at address 0x070, that if I am not mistaken is an
> exception.
>
> I saw that the code for <cyg_hal_invoke_constructors> is the following:
>
> void cyg_hal_invoke_constructors (void)
> {
> typedef void (*pfunc) (void);
> extern pfunc __CTOR_LIST__[];
> extern pfunc __CTOR_END__[];
> pfunc *p;
>
> for (p = &__CTOR_END__[-1]; p >= __CTOR_LIST__; p--)
> (*p) ();
> }
>
> Well, in the desassembly of my ecos executable there is no definition if
> symbols "__CTOR_END__" and "__CTOR_LIST__", that on the other hand are
> always defined when compiling without ecos.
These symbols should be added by the linker and are inserted by the
linker script. eg take a look at:
packages/hal/arm/arch/current/src/arm.ld, line 233.
Check the linker file being used for your target.
Andrew
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