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A speciality of the RTEMS build system was the make preinstall step. It
copied header files from arbitrary locations into the build tree. The
header files were included via the -Bsome/build/tree/path GCC command
line option.
This has at least seven problems:
* The make preinstall step itself needs time and disk space.
* Errors in header files show up in the build tree copy. This makes it
hard for editors to open the right file to fix the error.
* There is no clear relationship between source and build tree header
files. This makes an audit of the build process difficult.
* The visibility of all header files in the build tree makes it
difficult to enforce API barriers. For example it is discouraged to
use BSP-specifics in the cpukit.
* An introduction of a new build system is difficult.
* Include paths specified by the -B option are system headers. This
may suppress warnings.
* The parallel build had sporadic failures on some hosts.
This patch removes the make preinstall step. All installed header
files are moved to dedicated include directories in the source tree.
Let @RTEMS_CPU@ be the target architecture, e.g. arm, powerpc, sparc,
etc. Let @RTEMS_BSP_FAMILIY@ be a BSP family base directory, e.g.
erc32, imx, qoriq, etc.
The new cpukit include directories are:
* cpukit/include
* cpukit/score/cpu/@RTEMS_CPU@/include
* cpukit/libnetworking
The new BSP include directories are:
* bsps/include
* bsps/@RTEMS_CPU@/include
* bsps/@RTEMS_CPU@/@RTEMS_BSP_FAMILIY@/include
There are build tree include directories for generated files.
The include directory order favours the most general header file, e.g.
it is not possible to override general header files via the include path
order.
The "bootstrap -p" option was removed. The new "bootstrap -H" option
should be used to regenerate the "headers.am" files.
Update #3254.
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Update #3254.
Update #3260.
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The low level routines can be used in different occasions, it will be
required when accessing PCI.
Note the difference between byteorder.h (inlined functions) and access.S
where the functions will be declared in the library archive librtemscpu.a.
Function names starting with _ are in library and can be referenced by
function pointers.
Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
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* include/erc32.h: Remove (Unused).
* include/Makefile.am: Remove.
* include/.cvsignore: Remove (Obsolete).
* Makefile.am: Reflect changes above.
* configure.ac: Reflect changes above.
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* configure.ac:
AC_INIT(package,_RTEMS_VERSION,_RTEMS_BUGS).
AM_INIT_AUTOMAKE([no-define foreign 1.6]).
* cache/Makefile.am: Remove AUTOMAKE_OPTIONS.
* Makefile.am: Remove AUTOMAKE_OPTIONS.
* include/Makefile.am: Remove AUTOMAKE_OPTIONS.
* reg_win/Makefile.am: Remove AUTOMAKE_OPTIONS.
* syscall/Makefile.am: Remove AUTOMAKE_OPTIONS.
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* include/Makefile.am: Use 'TMPINSTALL_FILES ='.
* cache/Makefile.am: Use 'PREINSTALL_FILES ='.
* cache/Makefile.am: Use 'CLEANFILES ='.
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* include/Makefile.am, syscall/Makefile.am, cache/Makefile.am:
Apply include_*HEADERS instead of H_FILES.
* cache/.cvsignore: Add cache.h.
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+ interrupt masking correction
+ FPU rev.B workaround
+ minor erc32 related fixes
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> > I think I have found a bug in src/exec/scor/sparc/cpu/erc32.h in:
> >
> > #define ERC32_Disable_interrupt( _source, _previous ) \
> > do { \
> > unsigned32 _level; \
> > unsigned32 _mask = 1 << (_source); \
> > \
> > sparc_disable_interrupts( _level ); \
> > (_previous) = ERC32_MEC.Interrupt_Mask; \
> > ERC32_MEC.Interrupt_Mask = _previous | _mask; \
> > sparc_enable_interrupts( _level ); \
> > (_previous) &= ~_mask; \ <- IS THIS CORRECT...?
> > } while (0)
> >
> > The previous interrupt mask is returned after first clearing the
> > bit to be disabled, regardless whether the bit was set before or
> > not. If the bit was set (interrupt masked), subsequent call to
> > ERC32_Restore_interrupt() will enable the interrupt even though
> > it was supposed to be masked. This is indeed what happens in
> > DEBUG_puts when polled console I/O is used. In my opinion, the
> > last statement in the macro should be removed - what is your opinion?
>
> I think the "~" shouldn't be there. I recall that the intent of that line
> is to only return the state of the interrupts you were concerned with.
> Removing the line returns entire state. Given that the value returned
> shuold only be used in conjunction with the map, I suppose either removing
> the ~ or the entire line is correct? I can go either way. Just let me
> know which you think is more correct and the source will change. :)
Hmmm, just removing the '~' should be OK. DEBUG_puts() seems to be the
only user of ERC32_Restore_interrupt() anyway ...
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of switching to the modified GNU GPL.
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This is current as of sis 2.6.
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on the real erc32 hardware.
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