| Commit message (Collapse) | Author | Age | Files | Lines |
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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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