Remove svn:mergeinfo carried over from stable/9.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

MFC r264040:

4248 dtrace(1M) should never create DOF with empty probes section
4249 Only probes from the first DTrace object file will be included

Illumos Revision: 4a20ab41aadcb81c53e72fc65886e964e9add59

Reference:
https://www.illumos.org/issues/4248
https://www.illumos.org/issues/4249

Obtained from: Illumos

MFC r261122: dtrace: remove unexplained 16MB limitation from dt_alloc/dt_zalloc

MFC r260051:
When clearing relocations to __dtrace* symbols, handle both SHT_REL and
SHT_RELA sections properly instead of assuming that the relocation section
is of type SHT_REL.

MFC r249426;

Merge change from illumos:

3519 DTrace fails to resolve const types from fbt
3520 dtrace internal error -- token type 316 is not a valid D
compilation token
3521 clean up dtrace unit tests

Illumos Revision: e98f46c

Reference:
https://www.illumos.org/issues/3519
https://www.illumos.org/issues/3520
https://www.illumos.org/issues/3521

Tested by: Fabian Keil
Obtained from: Illumos

MFC r250574, r250812, r253725;

DTrace: option for time-ordered output

Merge changes from illumos:

3021 option for time-ordered output from dtrace(1M)
3022 DTrace: keys should not affect the sort order when sorting by value
3023 it should be possible to dereference dynamic variables
3024 D integer narrowing needs some work
3025 register leak in D code generation

This brings yet another feature implemented in upstream DTrace.
A complete description is available here:
http://dtrace.org/blogs/ahl/2012/07/28/my-new-dtrace-favorite/

This change bumps the DT_VERS_* number to 1.9.1 in
accordance to what is done in illumos.

Special thanks to Mark Johnston for fixes and testing.

Illumos Revisions: 13758:23432da34147

Reference:
https://www.illumos.org/issues/3021
https://www.illumos.org/issues/3022
https://www.illumos.org/issues/3023
https://www.illumos.org/issues/3024
https://www.illumos.org/issues/3025
https://www.illumos.org/issues/1694

Obtained from: Illumos

MFC: 248848

Commit a patch that fixes a problem in the #pragma statement when searching
for and loading dependent modules. This addresses a bug seen with
io.d where it was being doubly included.

PR: 171678
Submitted by: Mark Johnston

MFC r249526:
DTrace: print() should try to resolve function pointers

Merge changes from illumos:

3675 DTrace print() should try to resolve function pointers
3676 dt_print_enum hardcodes a value of zero

Illumos Revision: b1fa6326238973aeaf12c34fcda75985b6c06be1

Reference:
https://www.illumos.org/issues/3675
https://www.illumos.org/issues/3676

Obtained from: Illumos

MFC r248690, r248706, 248708, r248752:
Dtrace: merge new functions from Illumos.

This covers illumos issues:

1455 DTrace tracemem() should take an optional size argument
1451 DTrace needs toupper()/tolower() subroutines
1457 lltostr() D subroutine should take an optional base
1694 Add type-aware print() action
3511 dtrace.c erroneously checks for memory alignment on amd64

This includes an enhanced print() described here:

http://dtrace.org/blogs/eschrock/2011/10/26/your-mdb-fell-into-my-dtrace/

This change bumps the DT_VERS_* number to 1.9.0 in
accordance to what is done in illumos.

Illumos Revisions: 13457:571b0355c2e3
13458:5e394d8db762
13459:c3454574dd1a
13501:c3a7090dbc16
13483:f413e6c5d297

Reference:
https://www.illumos.org/issues/1455
https://www.illumos.org/issues/1451
https://www.illumos.org/issues/1457
https://www.illumos.org/issues/1560
https://www.illumos.org/issues/1694
https://www.illumos.org/issues/3511

Tested by: Fabian Keil
Obtained from: Illumos

MFC: 238979

When we return with an error we cannot unlock the mutex, because
it's been freed. Protect against that, hopefully unlikely, case.

Reviewed by: rpaulo

MFC 238457:

1458 D compiler fails to generate error on sizeof() an undefined struct

Reference:
https://www.illumos.org/issues/1458

Obtained from: Illumos

MFC r238558:

Dtrace: improve handling of library paths.

Merge changes from illumos

906 dtrace depends_on pragma should search all library paths, not just the
current one

949 dtrace should only include the first instance of a library found on
its library path

Obtained from: Illumos

MFC r238509:

Use libc's strndup() instead of Dtrace's reimplementation.

Corresponds partially to OpenSolaris change:
PSARC 2010/299 GNU/Linux/BSD compatibility functions
6901783 strndup would be nice.

MFC r238071:

Fix clang warning, introduced in the recent dtrace import.

Approved by: re (kib)

MFC r237624, r237714, r237716, r237860:

Bring llquantize support into Dtrace.

Bryan Cantrill implemented the equivalent of semi-log graph
paper for Dtrace so llquantize will use one logarithmic and
one linear scale.

MFC r234691

Implement the D "cpu" variable, which returns curcpu. I have chosen not
to follow the example of OpenSolaris and its descendants, which implemented
cpu as an inline that took a value out of curthread. At certain points in
the FreeBSD scheduler curthread->td_oncpu will no longer be valid (in
particular, just before the thread gets descheduled) so instead I have
implemented this as its own built-in variable.

Sponsored by: Sandvine Inc.

MFC: 234234

Change SIGUSR1 to SIGTHR to properly wake up a process that is being
traced. The use of SIGUSR1 caused traced processes (those attached to
with dtrace -p) to exit when dtrace exited.

MFC r228580:

In cddl/contrib/opensolaris/lib/libdtrace/common/dt_handle.c, some
uint64_t values are snprintf'd using %llx. On amd64, uint64_t is
typedef'd as unsigned long, so cast the values to u_longlong_t, as is
done similarly in the rest of the file.

MFC r228579:

In cddl/contrib/opensolaris/lib/libdtrace/common/dt_consume.c, some
uint64_t values are snprintf'd using %llx. On amd64, uint64_t is
typedef'd as unsigned long, so cast the values to u_longlong_t, as is
done similarly in the rest of the file.

MFC r228550:

In cddl/contrib/opensolaris/lib/libdtrace/common/dt_subr.c, the
dt_popc() function assumes that either _ILP32 or _LP64 is defined,
otherwise it has no suitable implementation.

However, the _ILP32 and _LP64 macros come from isa_defs.h, which is not
included in this file. Add the include now, to get the macros defined.

MFC r228549:

In cddl/contrib/opensolaris/lib/libdtrace/common/dt_link.c, use the
correct printf format for a key_t (aka long).

MFC r228548:

In cddl/contrib/opensolaris/lib/libdtrace/i386/dt_isadep.c, use the
correct printf format for an unsigned long.

MFC r228547:

Cast away a clang alignment warning in drti.c's fixsymbol() function.
This code only runs on i386 and amd64, so there should be no problems if
buf + sec->dofs_offset is not aligned (which is unlikely anyway).

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

Do not use #warning to warn about missing implementation of dt_popc(),
but just have a comment that this is broken.

This is just a bandaid until somebody can fix this correctly. The code
is just a broken as it was before r223262 - now buildworld just doesn't
fail.

Tested by: i386 + amd64 buildworld
With hat: benl co-mentor

Fix clang warnings.

Approved by: philip (mentor)

Give a chance to the target binary to run the ctors by waiting until it
has reached main(). This allows plockstat to work.

Sponsored by: The FreeBSD Foundation

Disable debug by default.

Sponsored by: The FreeBSD Foundation

Don't try to map the USDT probes. This is necessary because there is no
__SUNW_dof symbol present in FreeBSD binaries.

Sponsored by: The FreeBSD Foundation

Don't clobber an existing target object file when doing the DTrace
linking process. This is needed because we change the source object
files and the second this dtrace -G is run, no probes will be found.
This hack allows us to build postgres with DTrace probes enabled. I'll
try to find a way to fix this without needing this hack.

Sponsored by: The FreeBSD Foundation

Include <sys/sdt.h> on a generated header.

Sponsored by: The FreeBSD Foundation

Add libdtrace support for tracing userland programs.

Summary of changes:
* Implement a compatibility shim between Solaris libproc and our
libproc and remove several ifdefs because of this.
* Port the drti to FreeBSD.
* Implement the missing DOODAD sections
* Link with libproc and librtld_db
* Support for ustack, jstack and uregs (by sson@)
* Misc bugfixing

When writing the SUWN_dof section, we had to resort to building the ELF
file layout by "hand". This is the job of libelf, but our libelf doesn't
support this yet. When libelf is fixed, we can remove the code under
#ifdef BROKEN_LIBELF.

Sponsored by: The FreeBSD Foundation

Fix another mismerge: bring back the definition of DT_MUTEX_HELD().

Fix the result of a mismerge. MUTEX_HELD should be DT_MUTEX_HELD() and
Plmid() is not supposed to be called.

MFV OpenSolaris DTrace userland bits.

proc_wait() was replaced by proc_wstatus(). Right now this call is
useless because userland support is not working on HEAD, but this makes
libdtrace compile again.

Sponsored by: The FreeBSD Foundation

Update to the new proc_detach() function.

Sponsored by: The FreeBSD Foundation

dtrace: correctly map sections to addresses in elf object modules (amd64)

Unlike for modules with dso type, in elf object modules all the sections
have virtual address of zero. So, it is insufficient to add module base
address to section virtual address (as recorded in section header) to
get section address in kernel memory.
Instead, we should apply the same calculations that are performed by
kernel loaders (in boot code and in kernel) when they lay out sections
in memory.
Also, unlike OpenSolaris, the sections are not collapsed into just .text,
.data and .bss by module loaders, so we need to take additional care
about other sections.

Note that in-kernel symbol-to-address mapping worked just fine, e.g. fbt
provider could correctly find the functions, etc. It's only in userland
that the mapping in both direction worked incorrectly, e.g. in stack()
output addresses of functions in kernel modules were not translated to
their names.

Reviewed by: rpaulo
MFC after: 3 weeks

Merge from vendor: libdtrace MD parts needed by fasttrap.

Sponsored by: The FreeBSD Foundation

Unbreak platforms with char unsigned by default. Oddly enough, GCC isn't
satisfied with a simple cast to int in the check against EOF, so the fix
is a bit involved by actually having to go through a temporary variable.

Do not allow EOF token to be put back into input buffer.

This reimplements previous change from r20930 in more generic way.

MFC after: 1 week

In dtrace lexer, do not unput token if it is EOF.

This is harmless with OpenSolaris fex and yacc, but with FreeBSD
causes '\xff' symbol to be physically put into input buffer, causing
subsequent syntax error.

MFC after: 1 week

Correct the sense of the "use32" terenary operator so that it uses
'lib32' for 32-bit binaries on amd64 and 'lib' for 64-bit binaries.
Remove an #ifdef __i386__ that defined use32 to the wrong value on
i386 to workaround the bug in the terenary operator.

MFC after: 1 month

Merge latest DTrace changes from Perforce.

Approved by: jb

Mips doesn't have a long double that's different in size from double.

* Handle the different ioctl design.
* Add a couple of FreeBSD action extensions.

Make this file compile cleanly.

Leave out some header files.

* Handle building on FreeBSD for i386 and amd64.
* Add stubs for the other FreeBSD arches.
* Make the file compile cleanly.

* Make this file compile cleanly.
* Add FreeBSD constructor/destructor definitions.

* Add FreeBSD action extensions.
* Get the kernel module file name rather than hard-coding it like on Solaris.
* Use FreeBSD's process library API.
* Handle FreeBSD's different lock types.
* Get the list of loaded providers via a syscall.

* Handle the different ioctl design.
* Make this file compile cleanly.

There is a lot of commented out code here which applies to future work
for userland tracing.

For now we need the basic functions to be in place so that DTrace can
be used for kernel tracing.

Leave out a header file.

Merge FreeBSD include file changes with some code that should have come
in on the vendor branch.

* Use FreeBSD's process library instead of the Solaris one.
* There are a few placeholders in here for which there isn't libproc
support code yet. This is relevent to userland tracing. This set of
commits is designed to get kernel tracing up and running, with the
userland stuff to follow later.

Leave out the hook that Solaris has into it's rtld.

* Add a couple of action definitions for FreeBSD extensions.
* Handle the different ioctl design.
* Add support for the get and set error location.
* Add support for freopen().

* Handle the different ioctl design.
* Make the file compile cleanly.

There are many places in libdtrace where errno can be set. When an
error is returned all the way back to the dtrace app, it's hard to
figure out where that error came from.

Add a couple of functions to get and set the error location which can
be optionally compiled into the library.

Add some error definitions for FreeBSD action extensions.

* Make this file compile cleanly.
* Use FreeBSD's kld syscalls to get kernel module information instead
of using an object file system like Solaris uses.

* Handle the different ioctl design.
* Use FreeBSD's process library API.
* Make the file compile cleanly.

Just leave out a few includes to compile this on FreeBSD.

* Get the maximum number of CPUs via a sysctl.
* Handle the different ioctl design.
* Support the freopen() changes.
* Use functions in FreeBSD's process library rather than the CDDL
library that Solaris has which sits on top of their process file
system and is therefore unsuitable for use on FreeBSD. The libproc
API for FreeBSD is deliberately different to that on Solaris because
Sun wouldn't release the libproc.h header under a BSD license.

* Define YY_INPUT for flex since input() can't be re-defined.
* On FreeBSD define both LITTLE_ENDIAN and BIG_ENDIAN and then set the
BYTE_ORDER to the one we are using. On Solaris they define one or
the other but not both. For us to keep using FreeBSD header files,
we need to use endian definitions the same way we do in pure BSD
code.

Handle the different level of indirection between ioctl on SYSV vs BSD.

freopen() on FreeBSD behaves differently to the Solaris one.

* Use a portable POSIX timed wait.
* Handle the different ioctl format.

* Fix a function prototype.
* Allow for the different level of indirection between SYSV's ioctl and BSD's.
* Map a couple of sysconf definitions to one that FreeBSD has.

'echo' behaviour differs between SYSV and BSD.

This commit was generated by cvs2svn to compensate for changes in r178528,
which included commits to RCS files with non-trunk default branches.

This commit was generated by cvs2svn to compensate for changes in r178479,
which included commits to RCS files with non-trunk default branches.