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2454 6210 d 1 h jermar /trunk/kernel/ A bit of infrastructure for building with different compilers.
CFLAGS split into GCC_CFLAGS and SUNCC_CFLAGS.
As of now, there are no separate ICC_CFLAGS, but can be easily added.
 
2453 6210 d 7 h jermar /trunk/kernel/ More suncc fixes.
- remove more empty declarations
- add options to turn errors on empty structs into warnings and options to
silence these warnings
 
2452 6210 d 9 h jermar /trunk/kernel/ More suncc fixes.
- Removed extra semicolons after function declaration.
- Sun Studio recognizes only C99 __func__ and no gcc-specific __FUNCTION__.
In this case, a simple -D option can fix the problem.
 
2451 6211 d 3 h jermar /trunk/kernel/generic/ JoinMe -> Lingering  
2447 6214 d 7 h jermar /trunk/kernel/generic/src/main/ Split accidently joined lines.  
2446 6214 d 7 h jermar /trunk/kernel/generic/ More efficient and simpler task termination.

Based on the assumption, that after its creation, only the task itself can create more threads for itself,
the last thread with userspace context to execute thread_exit() will perform futex and IPC cleanup. When
the task has no threads, it is destroyed. Both the cleanup and destruction is controlled by reference
counting.

As for userspace threads, even though there could be a global garbage collector for joining threads, it is
much simpler if the uinit thread detaches itself before switching to userspace.

task_kill() is now an idempotent operation. It just instructs the threads within a task to exit.

Change in the name of a thread state: Undead -> JoinMe.
 
2445 6214 d 9 h decky /trunk/ initial merge of branches/fs
(not finished, huge cleanup is needed)
 
2444 6214 d 23 h jermar /trunk/kernel/ First fixes for suncc support.
It is going to be a long way...
 
2443 6215 d 0 h jermar /trunk/ sscc -> suncc  
2442 6215 d 1 h jermar /trunk/ Add dummy option for Sun Studio C Compiler.
For each architecture, offer only compilers that support the target.
 
2441 6215 d 1 h decky /trunk/kernel/ fix ICC compilation  
2440 6215 d 1 h jermar /trunk/kernel/generic/ Fix the problem with sys_thread_create() by splitting the create and attach functionality of
thread_create(). Now it is possible to specify a flag that will cause thread_create() to only allocate and
initialize the thread structure. A call to thread_attach() will make the thread visible to the system.
This arrangement makes it easier to undo creation of a thread in case of a failure in sys_thread_create().
 
2439 6215 d 2 h decky /trunk/kernel/arch/ia32/src/ fix ICC compilation  
2438 6215 d 2 h decky /trunk/ update for new compiler configuration scheme  
2437 6215 d 2 h decky /trunk/ experimental support for ICC
(the sources has to be modified to avoid ICC compiler warnings)
 
2436 6216 d 3 h jermar /trunk/ Fix two memory leaks.

In kernel, kernel_uarg structure needs to be deallocated when a thread
with userspace context is destroyed.

In userspace, the return value of the SYS_THREAD_CREATE must be checked
for error conditions and in case of error, uarg and stack must be freed
up.
 
2359 6228 d 12 h jermar /trunk/ Improve comments for the IPC subsystem.
Fix formatting and indentation.
 
2321 6236 d 8 h decky /trunk/ keep mouse state in i8042_grab, unify keyboard and mouse IRQ handler
(this fixes ticket #12)
 
2319 6236 d 12 h decky /trunk/kernel/generic/src/console/ run mcall only on active CPUs  
2317 6237 d 0 h decky /trunk/kernel/arch/ia32/include/ remove outstanding move  
2316 6237 d 0 h decky /trunk/kernel/arch/ia32/include/ remove forgotten movs  
2314 6237 d 0 h decky /trunk/kernel/arch/ia32/include/ allow to compile with -O0  
2310 6239 d 4 h jermar /trunk/kernel/generic/ Cleanup the waitq_wakeup() interface.
Replace numeric constants (i.e. 0)
and boolean constants (i.e. false) with
more readable WAKEUP_FIRST. Also change the
type of the second argument of waitq_wakeup()
to a newly introduced type wakeup_mode_t.

Fix behaviour of waitq_wakeup() in case
that WAKEUP_ALL semantics is required
but no threads are sleeping in the wait
queue. This is a similar fix to that of
Jan Hudecek committed in the RCU branch,
but, IMHO, is more straightforward and
also doesn't eat up previous missed
wakeups.
 
2302 6242 d 5 h decky /trunk/ force VGA palette to 3:2:3 palette on 8 bpp modes
(this fixes ticket #33)
 
2285 6251 d 12 h jermar /trunk/kernel/generic/src/proc/ Formatting and indentation fixes.  
2275 6256 d 4 h decky /trunk/kernel/generic/ add fancy uptime kconsole command  
2272 6257 d 4 h jermar /trunk/kernel/ Indentation and formatting fixes.  
2268 6258 d 4 h jermar /trunk/kernel/generic/ Document and assert proper usage of THREAD_FLAG_WIRED.
Original patch by Jan Hudecek.
 
2267 6259 d 4 h jermar /trunk/kernel/arch/sparc64/src/mm/ Fix indentation.  
2266 6259 d 4 h jermar /trunk/kernel/arch/sparc64/src/mm/ Add few assertions to tsb.c and clean it up a little bit.  
2252 6261 d 2 h jermar /trunk/kernel/arch/sparc64/src/mm/ Move one MEMBAR instruction from a delay slot,
which is, due to SF Erratum #51, a potentionally
dangerous place for a MEMBAR to be.
 
2233 6267 d 2 h decky /trunk/kernel/arch/ use the hlt instruction more properly  
2232 6267 d 3 h decky /trunk/kernel/arch/mips32/src/ add support for halt/reboot in MSIM  
2231 6267 d 6 h jermar /trunk/kernel/arch/sparc64/ Fix a nasty bug in the TLB miss handlers on sparc64.
After we no longer lock the kernel stack in the DTLB,
there is a real danger of nested DTLB misses. The nested
miss can very easily clobber the DTLB Tag Access register.
Therefore, the original miss may not read this register, but
it has to receive its value as an argument. The argument
value is saved in the trap table when it is guaranteed that
the nested TLB miss will not occur.
 
2229 6267 d 9 h jermar /trunk/ Revert some of the changes introduced in revision 2209.
I think it is not correct to remove serialization of pseudo threads in printf_core.c.
With thread-level futex serialization, several pseudo threads running in one thread could easily deadlock
the task.

Add a dedicated futex serialization to thread1.c test only.
 
2228 6267 d 9 h jermar /trunk/kernel/arch/sparc64/src/ Fix ticket #28.
In switch_to_userspace(), the uarg argument is in %i2, not in %i3.
 
2227 6267 d 17 h decky /trunk/kernel/ start shutdown infrastructure  
2225 6267 d 17 h decky /trunk/kernel/arch/mips32/ the bss and common sections have to be in .data output section to be properly generated in the binary image
(this might break IRIX, but it is already unmaintaned)
 
2224 6267 d 23 h decky /trunk/kernel/generic/src/console/ detach joined thread  
2223 6267 d 23 h decky /trunk/kernel/generic/src/ add mcall0 command (calling a function on each CPU)