1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071 |
- 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
- Rules.mak defines SYMBOL_PREFIX as _, such that -D__UCLIBC_UNDERSCORES__
- is added to CFLAGS 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 <mproulx at okiok.com> for further informations.
- Check:
- _mmap.S: besoin???
|