Eric Andersen cd411309b5 __data_start needs to be added to all crt0.S files that don't currently 20 years ago
..
bits e2d3f03559 Support O_STREAMING 22 years ago
sys b34e006872 Patch from Martin Proulx <mproulx@okiok.com> to support 22 years ago
AUTHORS b34e006872 Patch from Martin Proulx <mproulx@okiok.com> to support 22 years ago
Makefile 498d8099a6 Remove SAFECFLAGS. It was a workaround for failures in old awk script 21 years ago
README 2da24876a6 kill mention of the wrapper 21 years ago
clone.S 0287134396 Properly prefix some symbols 22 years ago
crt0.S cd411309b5 __data_start needs to be added to all crt0.S files that don't currently 20 years ago
mmap.S 6334e558ab Split up syscalls.c, since it had grown to be quite large and ugly. 21 years ago
setjmp.S b34e006872 Patch from Martin Proulx <mproulx@okiok.com> to support 22 years ago
specs.uclinux.gcc-2.95.i960-intel-coff b34e006872 Patch from Martin Proulx <mproulx@okiok.com> to support 22 years ago
vfork.S b34e006872 Patch from Martin Proulx <mproulx@okiok.com> to support 22 years ago

README

Overview
---------------------------------------------------------------------------

This is the README file for the i960 support in uClibc.

This has been tested with gcc 2.95.3 and i960-intel-coff target.

There is no support at all to compile with the intel CTOOLS, as this would
have required too many changes to uClibc. So you won't see any support
in the asm files for position independent data or code.

Quirks needed
---------------------------------------------------------------------------

prepended underscore
--------------------

As the i960 compiler prepends an underscore to symbols, it is critical that
the Config file define __C_SYMBOL_PREFIX__ as
__C_SYMBOL_PREFIX__ = _
to make sure that underscores are applied to symbol names when needed.


__va_copy in va-i960.h
----------------------

When compiled with gcc-2.95, the __va_copy macro in va-i960.h seems to be broken
and it has to be modified in order for uClibc to compile correctly.

Change:

#define __va_copy(dest, src) (dest) = (src)

To:

#define __va_copy(dest, src) dest[0] = src[0]; dest[1] = src[1]


gcc integration
---------------------------------------------------------------------------

I've preferred modifying the specs file so that the i960-intel-coff compiler
directly compiles with uClibc.

First, compile and install the standard i960-intel-coff compiler, which is meant
to be used with newlib.

Then, compile uClibc, installing over the newlib include files and libraries.

Update the specs file with the included specs.uclinux.gcc-2.95.i960-intel-coff

This specs file always build relocatable objects, which has the disadvantage
of not letting you know if the link is missing any symbols.

coff2flt
---------------------------------------------------------------------------

In order to run the executables under uClinux, fully relocatable binaries
need to be built using coff2flt.

We have built a working coff2flt that works with the i960 and the current version
of binfmt_flat with uClinux.

Contact Martin Proulx for further informations.





Check:
_mmap.S: besoin???