wait_for_thread_etc: expose as syscall/make public.

* This will be needed for the following commit that implements
`pthread_tryjoin_np` and `pthread_timedjoin_np`.

Change-Id: Idccb1aa588d6d10825294d14925d9bd046b65f19
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5098
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>

libroot: call thread exit hooks before destroying tls

Change-Id: Ide2799ccf8620e42650a8f45177fb5fac4f09696
Reviewed-on: https://review.haiku-os.org/c/haiku/+/3762
Reviewed-by: Fredrik Holmqvist <fredrik.holmqvist@gmail.com>

libroot: Fix GCC2 build.

libroot: Introduce thread specific heap init/exit hooks.

This allows heap implementations to initialize and clean up any thread
specific structures. The current default hoard heap does not use these.

Note that the thread exit hook will not be called for the main thread as
the heap may be needed during process termination (__cxa_finalize for
example).

Change-Id: I703fbd34dec0d9029d619a2125c5b19d8c1933aa
Reviewed-on: https://review.haiku-os.org/799
Reviewed-by: waddlesplash <waddlesplash@gmail.com>

runtime_loader: add support for ELF based TLS

This patch introduces support of ELF based TLS handling with lazy allocation
and initalization of TLS block for each DSO and thread. The implementation
generally follows the official ABI except that generation counter in dtv
is in fact a pointer to Generation object that contains both generation
counter and size of the dtv. That simplified the implementation a bit, but
could be changed later. The ABI requirements regariding in memory position
of TLS block is not honoured what results in static TLS model being
unsupported. However, that should not be a problem as long as
"executables" in Haiku are in fact shared objects and optimizations which
require specific TLS block in memory layout are not possible anyway.

libroot: spawn_thread() now creates a detached pthread.

* __pthread_destroy_thread() will in turn free the pthread_thread object.
* this fixes a leak of 2072 bytes on each thread construction/destruction
and #9945. MediaExtractor spawns a thread on construction, which leaked
its pthread_thread object on destuction.

libroot: explicitly check ABI version

As Axel suggested use simple, explicit checks for legacy ABI version
instead of obscure "compatibility mode".

libroot: make all areas executable for old binaries

* If at least one image is either B_HAIKU_ABI_GCC_2_ANCIENT or
B_HAIKU_ABI_GCC_2_BEOS almost all areas are marked as executable.
* B_EXECUTE_AREA and B_STACK_AREA are made public. The former is enforced since
the introduction of DEP and apps need it to correctly set area protection.
The latter is currently needed only to recognize stack areas and fix their
protection in compatibility mode, but may also be useful if an app wants
to use sigaltstack from POSIX API.

Merged signals-merge branch into trunk with the following changes:
* Reorganized the kernel locking related to threads and teams.
* We now discriminate correctly between process and thread signals. Signal
handlers have been moved to teams. Fixes #5679.
* Implemented real-time signal support, including signal queuing, SA_SIGINFO
support, sigqueue(), sigwaitinfo(), sigtimedwait(), waitid(), and the addition
of the real-time signal range. Closes #1935 and #2695.
* Gave SIGBUS a separate signal number. Fixes #6704.
* Implemented <time.h> clock and timer support, and fixed/completed alarm() and
[set]itimer(). Closes #5682.
* Implemented support for thread cancellation. Closes #5686.
* Moved send_signal() from <signal.h> to <OS.h>. Fixes #7554.
* Lots over smaller more or less related changes.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42116 a95241bf-73f2-0310-859d-f6bbb57e9c96

Fix build on gcc2.
(Note, I honestly have no idea what was initially wrong with the code; everything seamt right to me..)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40676 a95241bf-73f2-0310-859d-f6bbb57e9c96

Don't dereference thread after free(). Thanks to Stephan for noticing.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40674 a95241bf-73f2-0310-859d-f6bbb57e9c96

now correctly init the thread id in the pthread struct for main thread and threads spawned with spawn_thread(). This definitely helps for #7235.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40665 a95241bf-73f2-0310-859d-f6bbb57e9c96

Fix warning.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@39328 a95241bf-73f2-0310-859d-f6bbb57e9c96

I thought afterwards the stub can still be useful to run R5 C only binaries on a GCC4 Haiku. It might be better placed in the arch folder though.
Also fixed a typo.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35146 a95241bf-73f2-0310-859d-f6bbb57e9c96

DeadYak over IRC:
-Fix gcc4 build


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35145 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Rename _thread_do_exit_notification() to _thread_do_exit_work() as suggested by Ingo.
Also added an empty stub for _thread_do_exit_notification() when compiling for GCC2.
* Removed the check testing if the thread is already dead.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35142 a95241bf-73f2-0310-859d-f6bbb57e9c96

* The pthread_thread structure is now allocated for all threads.
* Therefore, all pthread functions should now work fine on all threads.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33967 a95241bf-73f2-0310-859d-f6bbb57e9c96

* revert r27322 and apply the patch provided by Salvatore
Thanks you! :)



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27323 a95241bf-73f2-0310-859d-f6bbb57e9c96

* calling receive_data with NULL as first argument(thread_id)
failed on Haiku, this makes e.g. painting in ArtPaint work

Don't know if this is the best place to fix it though.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27322 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Introduced new header directory headers/private/system which is supposed
to contain headers shared by kernel and userland (mainly libroot).
* Moved quite a few private kernel headers to the new location. Split
several kernel headers into a shared part and one that is still kernel
private. Adjusted all affected Jamfiles and source in the standard x86
build accordingly. The build for other architectures and for test code
may be broken.
* Quite a bit of userland code still includes private kernel headers.
Mostly those are <util/*> headers. The ones that aren't strictly
kernel-only should be moved to some other place (maybe
headers/private/shared/util).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25486 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Changed _kern_spawn_thread() and create_thread(): Instead of individual
arguments they get a single thread_creation_attributes structure now.
* Added stack_address and stack_size to thread_creation_attributes,
which allow to specify the stack size or the stack to be used for the
new user thread.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25389 a95241bf-73f2-0310-859d-f6bbb57e9c96

axeld + bonefish:
BeOS R5's glue code incorrectly calls _thread_do_exit_notification()
when main() returns, while Haiku does that in exit(). Therefore when
terminating this way the exit hooks were called twice for executables
built under BeOS R5. This caused e.g. NetPositive or the R5 svn to
crash on exit (our network code actually uses those hooks).
Fixes bug #1742.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23975 a95241bf-73f2-0310-859d-f6bbb57e9c96

This removes the inline assembly code for find_thread
from OS.h, sorry for triggering a complete rebuild.
To avoid doing a syscall for find_thread(0), the assembly
version is now in libroot. For BeOS R5 compatibility,
_kfind_thread_ is retained. This will fix some compile
problems, and provides a cleaner OS.h for future Haiku
versions.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14014 a95241bf-73f2-0310-859d-f6bbb57e9c96

Unlike R5, receive_data() could return an error code under Haiku - this
can now only happen if the thread is killed.
_user_receive_data() will now longer pass B_CAN_INTERRUPT to receive_data(),
but B_KILL_CAN_INTERRUPT - this should fix the problem Stefano experienced
with this function, even if I couldn't reproduce it.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@13075 a95241bf-73f2-0310-859d-f6bbb57e9c96

Renamed src/kernel to src/system.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12359 a95241bf-73f2-0310-859d-f6bbb57e9c96

runtime_loader: add support for ELF based TLS

This patch introduces support of ELF based TLS handling with lazy allocation
and initalization of TLS block for each DSO and thread. The implementation
generally follows the official ABI except that generation counter in dtv
is in fact a pointer to Generation object that contains both generation
counter and size of the dtv. That simplified the implementation a bit, but
could be changed later. The ABI requirements regariding in memory position
of TLS block is not honoured what results in static TLS model being
unsupported. However, that should not be a problem as long as
"executables" in Haiku are in fact shared objects and optimizations which
require specific TLS block in memory layout are not possible anyway.

libroot: spawn_thread() now creates a detached pthread.

* __pthread_destroy_thread() will in turn free the pthread_thread object.
* this fixes a leak of 2072 bytes on each thread construction/destruction
and #9945. MediaExtractor spawns a thread on construction, which leaked
its pthread_thread object on destuction.

libroot: explicitly check ABI version

As Axel suggested use simple, explicit checks for legacy ABI version
instead of obscure "compatibility mode".

libroot: make all areas executable for old binaries

* If at least one image is either B_HAIKU_ABI_GCC_2_ANCIENT or
B_HAIKU_ABI_GCC_2_BEOS almost all areas are marked as executable.
* B_EXECUTE_AREA and B_STACK_AREA are made public. The former is enforced since
the introduction of DEP and apps need it to correctly set area protection.
The latter is currently needed only to recognize stack areas and fix their
protection in compatibility mode, but may also be useful if an app wants
to use sigaltstack from POSIX API.

Merged signals-merge branch into trunk with the following changes:
* Reorganized the kernel locking related to threads and teams.
* We now discriminate correctly between process and thread signals. Signal
handlers have been moved to teams. Fixes #5679.
* Implemented real-time signal support, including signal queuing, SA_SIGINFO
support, sigqueue(), sigwaitinfo(), sigtimedwait(), waitid(), and the addition
of the real-time signal range. Closes #1935 and #2695.
* Gave SIGBUS a separate signal number. Fixes #6704.
* Implemented <time.h> clock and timer support, and fixed/completed alarm() and
[set]itimer(). Closes #5682.
* Implemented support for thread cancellation. Closes #5686.
* Moved send_signal() from <signal.h> to <OS.h>. Fixes #7554.
* Lots over smaller more or less related changes.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42116 a95241bf-73f2-0310-859d-f6bbb57e9c96

Fix build on gcc2.
(Note, I honestly have no idea what was initially wrong with the code; everything seamt right to me..)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40676 a95241bf-73f2-0310-859d-f6bbb57e9c96

Don't dereference thread after free(). Thanks to Stephan for noticing.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40674 a95241bf-73f2-0310-859d-f6bbb57e9c96

now correctly init the thread id in the pthread struct for main thread and threads spawned with spawn_thread(). This definitely helps for #7235.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40665 a95241bf-73f2-0310-859d-f6bbb57e9c96

Fix warning.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@39328 a95241bf-73f2-0310-859d-f6bbb57e9c96

I thought afterwards the stub can still be useful to run R5 C only binaries on a GCC4 Haiku. It might be better placed in the arch folder though.
Also fixed a typo.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35146 a95241bf-73f2-0310-859d-f6bbb57e9c96

DeadYak over IRC:
-Fix gcc4 build


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35145 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Rename _thread_do_exit_notification() to _thread_do_exit_work() as suggested by Ingo.
Also added an empty stub for _thread_do_exit_notification() when compiling for GCC2.
* Removed the check testing if the thread is already dead.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35142 a95241bf-73f2-0310-859d-f6bbb57e9c96

* The pthread_thread structure is now allocated for all threads.
* Therefore, all pthread functions should now work fine on all threads.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33967 a95241bf-73f2-0310-859d-f6bbb57e9c96

* revert r27322 and apply the patch provided by Salvatore
Thanks you! :)



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27323 a95241bf-73f2-0310-859d-f6bbb57e9c96

* calling receive_data with NULL as first argument(thread_id)
failed on Haiku, this makes e.g. painting in ArtPaint work

Don't know if this is the best place to fix it though.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27322 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Introduced new header directory headers/private/system which is supposed
to contain headers shared by kernel and userland (mainly libroot).
* Moved quite a few private kernel headers to the new location. Split
several kernel headers into a shared part and one that is still kernel
private. Adjusted all affected Jamfiles and source in the standard x86
build accordingly. The build for other architectures and for test code
may be broken.
* Quite a bit of userland code still includes private kernel headers.
Mostly those are <util/*> headers. The ones that aren't strictly
kernel-only should be moved to some other place (maybe
headers/private/shared/util).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25486 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Changed _kern_spawn_thread() and create_thread(): Instead of individual
arguments they get a single thread_creation_attributes structure now.
* Added stack_address and stack_size to thread_creation_attributes,
which allow to specify the stack size or the stack to be used for the
new user thread.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25389 a95241bf-73f2-0310-859d-f6bbb57e9c96

axeld + bonefish:
BeOS R5's glue code incorrectly calls _thread_do_exit_notification()
when main() returns, while Haiku does that in exit(). Therefore when
terminating this way the exit hooks were called twice for executables
built under BeOS R5. This caused e.g. NetPositive or the R5 svn to
crash on exit (our network code actually uses those hooks).
Fixes bug #1742.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23975 a95241bf-73f2-0310-859d-f6bbb57e9c96

This removes the inline assembly code for find_thread
from OS.h, sorry for triggering a complete rebuild.
To avoid doing a syscall for find_thread(0), the assembly
version is now in libroot. For BeOS R5 compatibility,
_kfind_thread_ is retained. This will fix some compile
problems, and provides a cleaner OS.h for future Haiku
versions.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14014 a95241bf-73f2-0310-859d-f6bbb57e9c96

Unlike R5, receive_data() could return an error code under Haiku - this
can now only happen if the thread is killed.
_user_receive_data() will now longer pass B_CAN_INTERRUPT to receive_data(),
but B_KILL_CAN_INTERRUPT - this should fix the problem Stefano experienced
with this function, even if I couldn't reproduce it.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@13075 a95241bf-73f2-0310-859d-f6bbb57e9c96

Renamed src/kernel to src/system.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12359 a95241bf-73f2-0310-859d-f6bbb57e9c96