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Rev	Age	Author	Path	Log message
1884	6639 d 9 h	jermar	/trunk/kernel/arch/sparc64/src/	Unfortunatelly, the sparc64's FPRS register is writable by non-privileged software so we cannot save only half of the FPU context depending on FPRS dirty bits. Instead, we must save the entire FPU register file.
1883	6639 d 9 h	jermar	/trunk/kernel/arch/sparc64/	More sparc64 FPU trap handlers.
1882	6639 d 10 h	jermar	/trunk/kernel/	Support for sparc64 FPU context.
1881	6640 d 10 h	jermar	/trunk/	sparc64 work: - find a CPU node and read its clock_frequency attribute - implement asm_delay_loop() - set TICK_COMPARE register according to processor frequency - small improvements at random places OpenFirmware work: - two new functions for walking the device tree Generic boot loader work: - added basic string functions Usual pile of indentation and formatting fixes.
1880	6642 d 2 h	jermar	/trunk/	Small improvements here and there.
1879	6643 d 10 h	jermar	/trunk/kernel/arch/sparc64/src/	Revert last change. The register window save area is automatically allocated by the SAVE instruction.
1878	6643 d 12 h	jermar	/trunk/kernel/arch/sparc64/src/	Even the first kernel register window after the switch from userspace stack needs proper register window save area [sparc64].
1877	6643 d 13 h	jermar	/trunk/kernel/	Coding style fixes. Remove unneeded sparc64 dummy functions.
1876	6643 d 14 h	jermar	/trunk/kernel/arch/sparc64/src/trap/	Fixes for sparc64's preemptible_handler(). Resynchronize CWP with that of TL=0.
1875	6645 d 3 h	jermar	/trunk/	sparc64 work. - Changes to enable userspace keyboard drivers. - Fix z8530 initialization (i.e. clear any pending Tx interrupts). - Experimental support for framebuffers with inverted colors.
1870	6647 d 2 h	jermar	/trunk/kernel/	Handle more sparc64 traps and improve handling of already handled traps.
1868	6647 d 8 h	jermar	/trunk/	sparc64 work. - the syscall wrapper needs to use the "memory" clobber specifier to prevent over-optimization. - on sparc64, the user address space spans the whole 64-bit space and therefore the macro USER_ADDRESS_SPACE_SIZE_ARCH, as it was defined, overflows to 0 - stop using USER_ADDRESS_SPACE_SIZE_ARCH and define MAX_HEAP_SIZE instead - in our situation when kernel and user address spaces are separate, the G (global) bit cannot be used (there is no point in it anymore) - add the DEBUG() macro to stdio.h; DEBUG() uses SYS_IO and is a good debugging tool for getting early userspace to work
1865	6648 d 4 h	jermar	/trunk/kernel/	sparc64 kernel fixes
1864	6648 d 23 h	jermar	/trunk/	sparc64 update. - Prototype userspace layer implementation that at least relates to sparc64 and compiles cleanly. - Fixes for kernel's preemptible_handler and code related to running userspace. - Enable userspace. Several dozen instructions are now run in userspace! We are pretty near the userspace milestone for sparc64.
1863	6651 d 2 h	jermar	/trunk/	Allow architectures to decide between inlined and not inlined version of syscall wrapper. Implement inlined syscall wrapper for sparc64.
1862	6651 d 6 h	jermar	/trunk/kernel/	sparc64 work. Kernel syscall support. Modify the preemptive_handler for the use by syscalls.
1861	6651 d 9 h	jermar	/trunk/kernel/arch/sparc64/	Convert sparc64 traps using SIMPLE_HANDLER to using PREEMPTIBLE_HANDLER.
1860	6652 d 4 h	jermar	/trunk/kernel/	A lot of untested sparc64 stuff: - Write ASID to hardware when a thread is about to run in userspace. - Add userspace() and switch_to_userspace() functions. - Handle special cases when the userspace spill/fill handler causes MMU trap. - Resolve some TODOs in the existing sparc64 code. - sparc64 has now C99 compliant header guards. - Formatting and indentation fixes.
1859	6652 d 11 h	jermar	/trunk/kernel/arch/sparc64/	sparc64 work. - Convert interrupt_vector trap handler and some mm related trap handlers to use preemptibe_handler(), which is essential for traps coming from userspace. - Add fast_data_access_protection() handler.
1858	6652 d 12 h	jermar	/trunk/kernel/arch/sparc64/src/trap/	sparc64 work. Handle situation when there are more valid windows than NWINDOW - 2 during the return to userspace in preemtpible_handler().

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