elftoolchain: Be consistent about which ELF header files we use.

1. For tools that use elftoolchain: always use elftoolchain's
elfdefinitions.h. Don't even think about looking at the host's
sys/exec_elf.h, which makes no sense and should never happen.

(ELF tools that don't use elftoolchain, like m68k-elf2coff,
continue to use nbincludes/sys/exec_elf.h. But no more nbincludes
hacks in elftoolchain.)

2. For kernel components (solaris, zfs, dtrace): always use
sys/exec_elf.h, even in Solaris components via sys/elf.h.
elfdefinitions.h is not wired up in the kernel build at all.

3. For most userland components that involve libelf: use
elfdefinitions.h via libelf header files (libelf.h, gelf.h).

libdtrace in particular requires _all_ R_* reloc type definitions,
but sys/exec_elf.h brings in only the _current machine's_ R_*
reloc type definitions. (While here: Use uintptr_t instead of
Elf_Addr for pointer-to-integer cast, since Elf_Addr is MD and
provided only by sys/exec_elf.h, not by elfdefinitions.h.)

And most userland components using libelf don't rely on any
properties of the current machine from sys/exec_elf.h, so they can
use libelf's elfdefinition.h.

Exceptions:

- dtrace drti.c relies on link.h -> link_elf.h -> sys/exec_elf.h,
but it also relies on sys/dtrace.h -> sys/elf.h ->
elfdefinitions.h like other userland components using sys/elf.h.

- kdump-ioctl.c uses sys/exec_elf.h directly and sys/dtrace.h ->
sys/elf.h -> elfdefinitions like other userland components using
sys/elf.h.

- t_ptrace_wait.c (via t_ptrace_core_wait.h) uses libelf to parse
core files, but relies on sys/exec_elf.h for struct
netbsd_elfcore_procinfo.

None of these exceptions needs all R_* reloc type definitions, so
as a workaround, we can just suppress libelf's elfdefinitions.h by
defining _SYS_ELFDEFINITIONS_H_ and use sys/exec_elf.h in these
exceptions.

And undo the whole BUILTIN_ELF_HEADERS mistake. This was:

- half bogus workarounds for missing build_install dependencies in
tools/Makefile, which are no longer missing now, and
- half futile attempt to use src/sys/sys/exec_elf.h via nbincludes in
tools involving libelf instead of libelf's elfdefinitions.h, which
collides.

Longer-term, we may wish to unify sys/exec_elf.h and libelf's
elfdefinitions.h, so we don't have to play these games.

But at least now the games are limited to three .c files (one of
which is generated by Makefile.ioctl-c), rather than haphazardly
applied tree-wide by monstrous kludges in widely used .h files with
broken hackarounds to get the tools build lurching to completion.

Use /dev/ksyms, not /netbsd, for the running kernel's symbols.

branches: 1.17.2; 1.17.4;
Use a constant to prevent dynamic array allocation which messes up SSP.

merge a new version of the CDDL dtrace and ZFS code.
this changes the upstream vendor from OpenSolaris to FreeBSD,
and this version is based on FreeBSD svn r315983.

in addition to the 10 years of improvements from upstream,
this version also has these NetBSD-specific enhancements:
- dtrace FBT probes can now be placed in kernel modules.
- ZFS now supports mmap().

branches: 1.15.12;
machdep.booted_kernel is not an absolute path, make it so. Now u_int is
found but its parent is not :-)

branches: 1.14.2;
Add missing dp_proc_unlock() in error path.

From PR kern/51285 (Henning Petersen)

XXX Pullup to 7 and 7-0

Introduce dt_bootfile() and use it to avoid hard-coded kernel values. Fixes
dtrace hang for kernels not named netbsd.

Make this build for me.

load the kernel for NetBSD (for now)

put back module filename finding code.

sync with FreeBSD

check and fix printf formats, negative array indices, uninitialized variables,
shadowed variables.

Use the correct path in dt_module.c.
From clang via Henning Petersen in PR 46009.

branches: 1.6.2;
remove a debug printf

DTrace: fix a few problems introduced by the recent ZFS update (expected
problems from the OpenSolaris merge).

Merge NetBSD local changes to new zfs version 22 sources.

Apply NetBSD changes to DTrace.

Ok with core@.

Add the FreeBSD 8-RC1 changes for DTrace.

Ok with core@.

branches: 1.1.1;
Initial revision

Use /dev/ksyms, not /netbsd, for the running kernel's symbols.

Use a constant to prevent dynamic array allocation which messes up SSP.

merge a new version of the CDDL dtrace and ZFS code.
this changes the upstream vendor from OpenSolaris to FreeBSD,
and this version is based on FreeBSD svn r315983.

in addition to the 10 years of improvements from upstream,
this version also has these NetBSD-specific enhancements:
- dtrace FBT probes can now be placed in kernel modules.
- ZFS now supports mmap().

branches: 1.15.12;
machdep.booted_kernel is not an absolute path, make it so. Now u_int is
found but its parent is not :-)

branches: 1.14.2;
Add missing dp_proc_unlock() in error path.

From PR kern/51285 (Henning Petersen)

XXX Pullup to 7 and 7-0

Introduce dt_bootfile() and use it to avoid hard-coded kernel values. Fixes
dtrace hang for kernels not named netbsd.

Make this build for me.

load the kernel for NetBSD (for now)

put back module filename finding code.

sync with FreeBSD

check and fix printf formats, negative array indices, uninitialized variables,
shadowed variables.

Use the correct path in dt_module.c.
From clang via Henning Petersen in PR 46009.

branches: 1.6.2;
remove a debug printf

DTrace: fix a few problems introduced by the recent ZFS update (expected
problems from the OpenSolaris merge).

Merge NetBSD local changes to new zfs version 22 sources.

Apply NetBSD changes to DTrace.

Ok with core@.

Add the FreeBSD 8-RC1 changes for DTrace.

Ok with core@.

branches: 1.1.1;
Initial revision

Use a constant to prevent dynamic array allocation which messes up SSP.

merge a new version of the CDDL dtrace and ZFS code.
this changes the upstream vendor from OpenSolaris to FreeBSD,
and this version is based on FreeBSD svn r315983.

in addition to the 10 years of improvements from upstream,
this version also has these NetBSD-specific enhancements:
- dtrace FBT probes can now be placed in kernel modules.
- ZFS now supports mmap().

branches: 1.15.12;
machdep.booted_kernel is not an absolute path, make it so. Now u_int is
found but its parent is not :-)

branches: 1.14.2;
Add missing dp_proc_unlock() in error path.

From PR kern/51285 (Henning Petersen)

XXX Pullup to 7 and 7-0

Introduce dt_bootfile() and use it to avoid hard-coded kernel values. Fixes
dtrace hang for kernels not named netbsd.

Make this build for me.

load the kernel for NetBSD (for now)

put back module filename finding code.

sync with FreeBSD

check and fix printf formats, negative array indices, uninitialized variables,
shadowed variables.

Use the correct path in dt_module.c.
From clang via Henning Petersen in PR 46009.

branches: 1.6.2;
remove a debug printf

DTrace: fix a few problems introduced by the recent ZFS update (expected
problems from the OpenSolaris merge).

Merge NetBSD local changes to new zfs version 22 sources.

Apply NetBSD changes to DTrace.

Ok with core@.

Add the FreeBSD 8-RC1 changes for DTrace.

Ok with core@.

branches: 1.1.1;
Initial revision

machdep.booted_kernel is not an absolute path, make it so. Now u_int is
found but its parent is not :-)

branches: 1.14.2;
Add missing dp_proc_unlock() in error path.

From PR kern/51285 (Henning Petersen)

XXX Pullup to 7 and 7-0

Introduce dt_bootfile() and use it to avoid hard-coded kernel values. Fixes
dtrace hang for kernels not named netbsd.

Make this build for me.

load the kernel for NetBSD (for now)

put back module filename finding code.

sync with FreeBSD

check and fix printf formats, negative array indices, uninitialized variables,
shadowed variables.

Use the correct path in dt_module.c.
From clang via Henning Petersen in PR 46009.

branches: 1.6.2;
remove a debug printf

DTrace: fix a few problems introduced by the recent ZFS update (expected
problems from the OpenSolaris merge).

Merge NetBSD local changes to new zfs version 22 sources.

Apply NetBSD changes to DTrace.

Ok with core@.

Add the FreeBSD 8-RC1 changes for DTrace.

Ok with core@.

branches: 1.1.1;
Initial revision

Make this build for me.

load the kernel for NetBSD (for now)

put back module filename finding code.

sync with FreeBSD

check and fix printf formats, negative array indices, uninitialized variables,
shadowed variables.

Use the correct path in dt_module.c.
From clang via Henning Petersen in PR 46009.

branches: 1.6.2;
remove a debug printf

DTrace: fix a few problems introduced by the recent ZFS update (expected
problems from the OpenSolaris merge).

Merge NetBSD local changes to new zfs version 22 sources.

Apply NetBSD changes to DTrace.

Ok with core@.

Add the FreeBSD 8-RC1 changes for DTrace.

Ok with core@.

branches: 1.1.1;
Initial revision