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Rev Age Author Path Log message Diff
2292 6244 d 13 h hudecek /branches/rcu/ updated to latest trunk revision, minor tweaks in tasklet.c  
2131 6279 d 5 h decky /branches/ add development branches  
2128 6319 d 3 h jermar /trunk/ Add arm32 architecture. The 32 suffix is used to specify that 16-bit Thumb
instructions are not used. The arm32 code is mostly composed of placeholders
that need to be replaced by real implementation. So far, the arm32 tree
only compiles. If run under GXEmul simulator, an infinit loop at the
kernel entry point will be entered.
 
2126 6319 d 23 h decky /trunk/kernel/ small cleanup, more work coming  
2125 6320 d 2 h decky /trunk/ experimental support for Objective C
(disabled by default)
 
2124 6320 d 4 h decky /trunk/kernel/generic/ implement simple realloc()  
2123 6326 d 7 h decky /trunk/kernel/generic/src/mm/ add forgotten unsigned  
2122 6326 d 7 h decky /trunk/kernel/generic/ explicit typecast, fix signed/unsigned comparison  
2121 6326 d 7 h decky /trunk/kernel/generic/src/mm/ remove anonymous structure, add static qualifier  
2106 6328 d 9 h jermar /trunk/kernel/ Merge as_t structure into one and leave the differring parts in as_genarch_t.

Indentation and formatting changes in header files.
 
2094 6333 d 5 h decky /trunk/kernel/generic/ avoid conflict with potential keyword  
2089 6334 d 9 h decky /trunk/ huge type system cleanup
remove cyclical type dependencies across multiple header files
many minor coding style fixes
 
2087 6335 d 5 h jermar /trunk/kernel/ Indentaion and formatting changes even Martin will like :-)  
2083 6340 d 9 h decky /trunk/kernel/ typedef elimination  
2076 6343 d 10 h jermar /trunk/kernel/ Beat the implicit illegal virtual alias created by reusing userspace frames.
In the anonymous and ELF backends, if the architecture has virtually indexed D-cache,
selectively flush cachelines belonging to the frame being freed.
This fixes Ticket #20.
 
2071 6345 d 2 h jermar /trunk/ (c) versus (C)  
2069 6347 d 0 h jermar /trunk/ Improve formatting.  
2059 6368 d 11 h jermar /trunk/kernel/generic/ Improve indentation and formatting.  
2052 6374 d 5 h decky /trunk/kernel/generic/src/mm/ pretty-print slabs  
2048 6377 d 3 h jermar /trunk/ Formatting and indentation changes.  
2035 6380 d 7 h decky /trunk/kernel/generic/src/ more fancy kconsole output  
2015 6384 d 2 h jermar /trunk/ Rework support for virtually indexed cache.
Instead of repeatedly flushing the data cache, which was a huge overkill, refuse to create an illegal address alias
in the kernel (again) and allocate appropriate page color in userspace instead. Extend the detection also to
SYS_PHYSMEM_MAP syscall.

Add support for tracking physical memory areas mappable by SYS_PHYSMEM_MAP.

Lots of coding style changes.
 
2009 6389 d 1 h jermar /trunk/kernel/ Initial support for handling illegal virtual aliases on sparc64.  
2007 6392 d 0 h jermar /trunk/kernel/ Introduce page colors. So far, only sparc64 uses correct page color bits. Other architectures have a dummy define
specifying zero bits for a page color.

There is a new check of page color in as_area_share(). Because of lack of support for this in the userspace, the
check has been #ifef'ed out.
 
2000 6395 d 11 h decky /trunk/kernel/ move files to more proper locations  
1999 6395 d 11 h decky /trunk/ start RAM disk support  
1981 6405 d 10 h jermar /trunk/kernel/ Indentation, formatting and minor changes.  
1954 6428 d 1 h jermar /trunk/ Minor changes. Some coding style fixes and also a type (tee vs. tree).
One AS -> as change.
 
1950 6432 d 5 h jermar /trunk/kernel/ Indentation changes and coding style fixes in slab.c and slab.h.  
1915 6446 d 2 h jermar /trunk/kernel/ A quote from from SPARC V9 specification:

The Y register is deprecated; it is provided only for compatibility with previous versions
of the architecture. It should not be used in new SPARC-V9 software. It is
recommended that all instructions that reference the Y register (i.e., SMUL,
SMULcc, UMUL, UMULcc, MULScc, SDIV, SDIVcc, UDIV, UDIVcc, RDY, and
WRY) be avoided. See the appropriate pages in Appendix A, “Instruction Definitions,”
for suitable substitute instructions.

Still gcc is generating code which uses Y and some of the instructions above.
This change modifies the preemptible_handler() to preserve the Y register
across preemption.
 
1914 6446 d 8 h jermar /trunk/kernel/generic/ Add function for printing out info about address space.  
1904 6456 d 6 h jermar /trunk/kernel/ IPI/cross-call support for sparc64.
SMP on sparc64 is now fully supported.
 
1894 6465 d 0 h jermar /trunk/ Add balloc() (a.k.a boot allocator):
- balloc() only needs to know how to allocate memory.
- Memory allocated via balloc() is supposed to be passed to kernel and never freed by boot itself.
- make kernel aware of boot allocations

More work on OFW device tree:
- use balloc() to efficiently and safely allocate memory for the canonical copy of the device tree

sparc64 boot:
- pass OFW device tree root node pointer to kernel
 
1891 6466 d 0 h jermar /trunk/kernel/ sparc64 work:
- Experimental support for TSB (Translation Storage Buffer).
 
1890 6466 d 11 h jermar /trunk/ - Create a dedicated slab cache for as_t objects and switch from malloc/free to slab_alloc/slab_free for
them.

- Slightly fix and improve both the kernel and userspace atomic_add() on sparc64.

- More TSB work on the sparc64 front.
 
1889 6467 d 2 h jermar /trunk/kernel/ Fix bug in mm/as.c:
- as_area_destroy() should not work with AS but as

sparc64 work:
- start implementing TSB support
 
1854 6486 d 11 h jermar /trunk/kernel/ Define architecture-specific thread sub-constructors and sub-destructors on all architectures.
Define the THREAD_FLAG_USPACE which means that the thread runs in user space.
The forementioned changes allow for allocating of user window buffer on sparc64
threads that execute in userspace.

A lot of formatting and indentation fixes.
 
1851 6494 d 9 h jermar /trunk/kernel/ sparc64 work.
Define the istate structure.
Move the identity-mapping handler to assembly.
Make the preemptible handler more general so that TL=1 MMU exceptions can make use of it.

Little bit of formatting and indentation.
 
1833 6513 d 22 h decky /trunk/kernel/ more sophisticated initial stack handling  
1793 6532 d 11 h jermar /trunk/kernel/ Change hw_map() on sparc64 to use virtual addresses that are
beyond the end of physical memory. It is beneficial in two
ways: first, physical memory is no longer being wasted by
otherwise necessary calls to frame_alloc() and, second,
virtual addresses for devices are now correctly allocated
and do not overlap with the 4M TLB-locked mapping for
kernel text and data.