Andrew Lunn wrote:
On Sun, May 03, 2009 at 12:44:13AM +0300, Tarmo Kuuse wrote:
Andrew Lunn wrote:
Can synthetic target even be built with native x86_64 tools?
I don't think so. Synth calls kernel system calls directly, using
assembly language. I expect this part needs re-writing into 64 bit
code.
That is a bit surprising - I assumed the synthetic target was just
another application from the compiler's side.
From the compiler, yes, its just an application. However because eCos
has a libc, you cannot use the native libc as the interface to the
native kernel. You have to call the kernel directly. Hence the system
call issues.
I don't know anything about the x86 or (shudder) x86-64 bowels and would
prefer to live a long and sane life by keeping it that way :)
Then take a look at x86 emulators which you can run on 32 bit more on
top of a 64 bit system. eg http://bochs.sourceforge.net/
I now have a 32-bit Debian system running inside VirtualBox on my 64-bit
Debian system. Synthetic target works as expected, host tools for
Ethernet can be built, etc.
I suspected it would end up like this when starting...
--
Kind regards,
Tarmo Kuuse
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