headers: Fix B_CURRENT_IMAGE_SYMBOL for GCC2.

Apparently GCC2 does not like &__func__, so just drop the &.
Fixes #17253.

headers/kernel: Add argument names to initialization functions.

headers/kernel: Include declarations of initialization functions in image.h.

No "real" functional change, but this causes GCC7 to throw errors when
these functions are declared without the image_id argument, which
in some files they were (as this commit repairs.)

This change is largely inconsequential on x86, but on callee-cleanup-args
targets, leaving out the argument would probably cause stack corruption.

headers/kernel: Define B_CURRENT_IMAGE_SYMBOL via __func__.

Previously, __haiku_init_before was a symbol that was included in
each (shared) object, and so it could be used to determine what
one we were in. Now, there are no such universal symbols that
are declared private to only the object, so we have to use
a different approach.

__func__ is defined as a const char* at the very beginning of
every function it's used in, set to a string of the function name
only, i.e., the arguments and return type are left off. So while
including that is perhaps not quite optimal, in practice this
definition is used extremely rarely (it was introduced by Haiku,
and it is used in only 2 applications at all that I could find --
WebKit and Canna.)

There really isn't any other way to get a pointer that we know
for certain is within the current object besides this one
without inserting one, but that really isn't merited just for this.
(__builtin_return_address() has problematic semantics wrt. inlining,
including linker-inlining.) So this will have to do.

headers/kernel: Move B_WAIT_TILL_LOADED to a syscall header.

It is only used as an argument to _kern_load_image directly, not to
any of the load_image functions in image.h, so it belongs in a syscall-
specific header like other such constants.

No functional change intended.

headers/kernel: Clean up image.h.

* Add missing whitespace.
* Remove definition of the now-gone __haiku_init_before.

No functional change intended.

Make some headers C89 safe again

- Allows to use FindDirectory.h in C89 sourcecode (no C++ style comments
allowed)

image.h: Add B_{APP,CURRENT}_IMAGE_SYMBOL macros

* Those can be used in cases where a pointer to an image symbol is
required.
* Adjust BResources::SetToImage() accordingly.

* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33586 a95241bf-73f2-0310-859d-f6bbb57e9c96

Extended image_info by fields for the Haiku version and ABI. The runtime loader
and the kernel read those values from the shared object (if available). In the
runtime loader this should eventually replace the gcc version guessing method
currently used (at least for shared objects built for Haiku). The optional
packages need to be rebuilt first, though.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30729 a95241bf-73f2-0310-859d-f6bbb57e9c96

Rewrote image.h.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22582 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Rewrote BeBuild.h which had "a few" consequences (got rid of all those class
definitions).
* Minor cleanup here and there.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22577 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added (currently only) flag B_WAIT_TILL_LOADED for _kern_load_image()
(maybe this should better go into a private header?). If given the function
waits till the loader is done with loading and relocating the executable.
Otherwise it returns before the loader starts.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@11690 a95241bf-73f2-0310-859d-f6bbb57e9c96

minor changes.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@2417 a95241bf-73f2-0310-859d-f6bbb57e9c96

Completed, rearranged, and cleaned up OS.h. Moved some typedefs from ktypes.h
to this place. Also removed create_sem_etc() from there, that shouldn't be a public call.
Cleaned up image.h.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1377 a95241bf-73f2-0310-859d-f6bbb57e9c96

Source compatibility objective: time to add some BeOS specific public headers.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1091 a95241bf-73f2-0310-859d-f6bbb57e9c96

image.h: Add B_{APP,CURRENT}_IMAGE_SYMBOL macros

* Those can be used in cases where a pointer to an image symbol is
required.
* Adjust BResources::SetToImage() accordingly.

* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33586 a95241bf-73f2-0310-859d-f6bbb57e9c96

Extended image_info by fields for the Haiku version and ABI. The runtime loader
and the kernel read those values from the shared object (if available). In the
runtime loader this should eventually replace the gcc version guessing method
currently used (at least for shared objects built for Haiku). The optional
packages need to be rebuilt first, though.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30729 a95241bf-73f2-0310-859d-f6bbb57e9c96

Rewrote image.h.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22582 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Rewrote BeBuild.h which had "a few" consequences (got rid of all those class
definitions).
* Minor cleanup here and there.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22577 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added (currently only) flag B_WAIT_TILL_LOADED for _kern_load_image()
(maybe this should better go into a private header?). If given the function
waits till the loader is done with loading and relocating the executable.
Otherwise it returns before the loader starts.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@11690 a95241bf-73f2-0310-859d-f6bbb57e9c96

minor changes.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@2417 a95241bf-73f2-0310-859d-f6bbb57e9c96

Completed, rearranged, and cleaned up OS.h. Moved some typedefs from ktypes.h
to this place. Also removed create_sem_etc() from there, that shouldn't be a public call.
Cleaned up image.h.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1377 a95241bf-73f2-0310-859d-f6bbb57e9c96

Source compatibility objective: time to add some BeOS specific public headers.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1091 a95241bf-73f2-0310-859d-f6bbb57e9c96