Rev |
Age |
Author |
Path |
Log message |
Diff |
1881 |
6553 d 16 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 |
6555 d 7 h |
jermar |
/trunk/ |
Small improvements here and there. |
|
1879 |
6556 d 16 h |
jermar |
/trunk/kernel/arch/sparc64/src/ |
Revert last change.
The register window save area is automatically allocated by the SAVE instruction. |
|
1878 |
6556 d 18 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 |
6556 d 19 h |
jermar |
/trunk/kernel/ |
Coding style fixes.
Remove unneeded sparc64 dummy functions. |
|
1876 |
6556 d 19 h |
jermar |
/trunk/kernel/arch/sparc64/src/trap/ |
Fixes for sparc64's preemptible_handler().
Resynchronize CWP with that of TL=0. |
|
1875 |
6558 d 9 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. |
|
1871 |
6559 d 19 h |
jermar |
/trunk/ |
Replace FB_BIG_ENDIAN with FB_INVERT_ENDIAN.
Omit tests for architecture endianness in deciding framebuffer endianness. |
|
1870 |
6560 d 8 h |
jermar |
/trunk/kernel/ |
Handle more sparc64 traps and improve handling of already handled traps. |
|
1868 |
6560 d 14 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 |
6561 d 10 h |
jermar |
/trunk/kernel/ |
sparc64 kernel fixes |
|
1864 |
6562 d 5 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 |
6564 d 8 h |
jermar |
/trunk/ |
Allow architectures to decide between inlined and not inlined version of syscall wrapper.
Implement inlined syscall wrapper for sparc64. |
|
1862 |
6564 d 12 h |
jermar |
/trunk/kernel/ |
sparc64 work.
Kernel syscall support.
Modify the preemptive_handler for the use by syscalls. |
|
1861 |
6564 d 15 h |
jermar |
/trunk/kernel/arch/sparc64/ |
Convert sparc64 traps using SIMPLE_HANDLER to using PREEMPTIBLE_HANDLER. |
|
1860 |
6565 d 10 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 |
6565 d 17 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 |
6565 d 18 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(). |
|
1857 |
6566 d 13 h |
jermar |
/trunk/kernel/arch/sparc64/ |
sparc64 work.
More bits needed to reach the userspace milestone were added.
The preemptible_handler(), still a prototype, now contains all functionality it needs.
Some sanitation was added to functions expecting page-aligned pointers to
userspace window buffer. |
|
1856 |
6566 d 17 h |
jermar |
/trunk/kernel/ |
sparc64 work.
- Modify before_thread_runs_arch() to store addresses of the kernel stack and
userspace window buffer, resp., to registers %g6 and %g7, resp, in the
alternate and interrupt global sets.
- Modify after_thread_ran_arch() to sample %g7 from the alternate globals.
- Implement trap handler for spilling register windows into userspace window buffer.
- Implement assembly language functions to access %g6 and %g7 registers in the alternate sets.
- Initialize the trap table so that there are now also spill_1_normal, spill_2_normal,
spill_0_other and fill_1_normal handlers. These handlers are used in different situations
and for different purposes. |
|