Redboot and Evaluator 7T : newlib is Angel based
J. Johnston
jjohnstn@redhat.com
Fri Feb 21 17:15:00 GMT 2003
Pierre Habraken wrote:
> Pierre Habraken wrote:
>
>>[...]
>>But now I am faced to a new problem : newlib (which is linked to my
>>program), and especially the C run time sartup code, uses SWI calls to
>>Angel (swi 0x00123456), which one has been replaced by Redboot !
>>
>>Does anyone know how to tell newlib not to use Angel services ?
>
>
> This is probably a stupid question : I understand that I'll have to
> write my own crt0.S, will I ?
I just added a new configuration option to newlib: --disable-newlib-supplied-syscalls
to allow you to build newlib without including syscalls.
The newlib/libc/sys/arm directory has been modified to recognize
this new option and not build syscalls.o. There is also a __NO_SYSCALLS__ C flag
set on that you can use within files that you don't want to exclude entirely.
This is relatively new so if you find a file that needs alteration, please let
the newlib list know.
There is a redboot-crt0.S file provided in the libgloss/arm directory. There
is also an elf-redboot.specs file which handles the crt0 and library specification
for you. You can specify the file via the -specs= option of gcc.
-- Jeff J.
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