CVS log for src/external/cddl/osnet/lib/libdtrace/Makefile

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libdtrace: Handle some x86-specific symbols in the .expsym file.

PR lib/58838: shared libraries in base should all have expsym lists

adapt to ${CC_WNO_MAYBE_UNINITIALIZED}

Use ${CC_WNO_MAYBE_UNINITIALIZED} instead of
the older style more complex expressions.

Remove workarounds if they were for a specific
version of gcc < 10.

bsd.own.mk: rename GCC_NO_* to CC_WNO_*

Rename compiler-warning-disable variables from
	GCC_NO_warning
to
	CC_WNO_warning
where warning is the full warning name as used by the compiler.

GCC_NO_IMPLICIT_FALLTHRU is CC_WNO_IMPLICIT_FALLTHROUGH

Using the convention CC_compilerflag, where compilerflag
is based on the full compiler flag name.

XXX: ignore warning about overlapping buffers for sprintf().

Compile MIPS specific code.

Mostly merge changes from HEAD upto 20200411

Merge changes from current as of 20200406

external/cddl/osnet: Do not suppress the warning output for libdtrace.

Changed -Wno-maybe-uninitialized to -Wno-error=maybe-uninitialized to allow
warnings to be printed out during build.

Suggested by: christos@

external/cddl/osnet: Supress -Werror=maybe-uninitialized error in libdtrace.

It looks like this is a false positive, since the section of code triggering the error

external/cddl/osnet/dist/lib/libdtrace/common/dt_proc.c:400:42:

is only accessed after "err" is initialized.

Error was reported when build.sh was run with MKLIBCSANITIZER=yes flag.

Reviewed by: kamil@

Pull up following revision(s) (requested by jmcneill in ticket #525):

	external/cddl/osnet/dev/dtrace/aarch64/dtrace_isa.c: revision 1.1
	distrib/sets/lists/modules/md.i386: revision 1.83
	share/mk/bsd.own.mk: revision 1.1168
	usr.bin/mkubootimage/mkubootimage.c: revision 1.25
	sys/modules/dtrace/Makefile: revision 1.7
	usr.bin/mkubootimage/mkubootimage.c: revision 1.26
	sys/modules/dtrace/Makefile: revision 1.8
	external/cddl/osnet/dist/lib/libdtrace/aarch64/dt_isadep.c: revision 1.2
	distrib/sets/lists/modules/mi: revision 1.128
	sys/arch/aarch64/include/frame.h: revision 1.3
	sys/arch/evbarm/conf/mk.generic64: revision 1.4
	external/cddl/osnet/dist/lib/libdtrace/common/dt_link.c: revision 1.12
	sys/modules/cyclic/Makefile: revision 1.4
	sys/arch/aarch64/conf/Makefile.aarch64: revision 1.16
	external/cddl/osnet/dev/dtrace/aarch64/dtrace_subr.c: revision 1.1
	sys/arch/aarch64/aarch64/start.S: revision 1.3
	sys/arch/aarch64/aarch64/trap.c: revision 1.22
	external/cddl/osnet/dev/fbt/aarch64/fbt_isa.c: revision 1.1
	external/cddl/osnet/dev/dtrace/aarch64/dtrace_asm.S: revision 1.1
	external/cddl/osnet/dev/fbt/aarch64/fbt_isa.h: revision 1.1
	external/cddl/osnet/dev/dtrace/aarch64/regset.h: revision 1.1
	external/cddl/osnet/lib/libdtrace/Makefile: revision 1.26
	distrib/sets/lists/modules/md.amd64: revision 1.82
	usr.bin/mkubootimage/mkubootimage.1: revision 1.13
	distrib/sets/lists/modules/ad.arm: revision 1.14

Add KDTRACE_HOOKS support.

Define lwp_trapframe() macro

dtrace: add support for aarch64

Add syscall_linux back for other arm architectures (accidently removed
in previous)

Add -u flag for updating headers in place.

Fix alignment of .text section by changing load address to
0xffffffc000000000 and adding 64 bytes of padding before the entry point.

Update arm64 image header in place

Move dtrace_syscall_linux out of mi set list

Enable DTrace on aarch64

Fix signed/unsigned comparison

dtrace: add support for aarch64

This previously had -Wno-format-truncation so I am presuming it should
have been converted to GCC_NO_FORMAT_TRUNCATION rather than
GCC_NO_STRINGOP_TRUNCATION which is what happened.   This might unbreak
the build (olr at least get it further).

introduce some common variables for use in GCC warning disables:

GCC_NO_FORMAT_TRUNCATION    -Wno-format-truncation (GCC 7/8)
GCC_NO_STRINGOP_TRUNCATION  -Wno-stringop-truncation (GCC 8)
GCC_NO_STRINGOP_OVERFLOW    -Wno-stringop-overflow (GCC 8)
GCC_NO_CAST_FUNCTION_TYPE   -Wno-cast-function-type (GCC 8)

use these to turn off warnings for most GCC-8 complaints.  many
of these are false positives, most of the real bugs are already
commited, or are yet to come.


we plan to introduce versions of (some?) of these that use the
"-Wno-error=" form, which still displays the warnings but does
not make it an error, and all of the above will be re-considered
as either being "fix me" (warning still displayed) or "warning
is wrong."

Only exclude gcc-8 warnings when the gcc we're using is gcc>=8

no error for string truncation

Sync with HEAD

-Wno-format-truncation is only needed when using GCC

uses the idiom len = snprintf(&tmp, 1, ...) to compute length.
needs -Wno-format-truncation

Sync with HEAD

Replace HAVE_GCC with ACTIVE_CC == gcc checks

Kernel modules build with GCC and Clang/LLVM.

Requested by <joerg>

Make cddl/osnet/lib/libdtrace buildable with MKLLVM=yes

Clang/LLVM does not recognize:
 - -Wno-maybe-uninitialized
 - -Wno-unused-but-set-variable

MKGCC=yes still builds the distribution.

This is a step forward functional MKLLVM=yes HAVE_LLVM=yes build.

Sponsored by <The NetBSD Foundation>

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().

Sync with HEAD.  (Note that most of these changes are simply $NetBSD$
tag issues.)

arrange for .in files to be rebuilt.

Sync with HEAD

include bsd.init.mnk for consistency and set NOLINT since this overrides
MKLINT which can be re-set from /etc/mk.conf.

Arrange to install the dtrace files (some are broken, sets will need to be
fixed)

do the stack protector stuff like the other files.

- make the generated file rules depend on the source files
- hack for clang on Darwin

Add build stuff.

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

Rebase to HEAD as of a few days ago.

sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs.  ("Protocol error: too many arguments")

Use MACHINE_CPU instead of MACHINE_ARCH with pattern matching

Include bsd.own.mk to use MACHINE_CPU.

Advised by matt@

Look up arm directory on MACHINE_ARCH=*arm*

resync from head

Make dtrace/zfs compile on arm based on the diff from:
    http://people.freebsd.org/~gonzo/arm/dtrace-arm.diff
Completely untested, kernel support not added.

sync with head

Use the correct MACHINE_ARCH for amd64.
Remove temporary hack while here.
From Henning Petersen in PR 46001.

- use CPPFLAGS instead of CFLAGS
- use relative .PATH

Disable stack protection warnings for more sources which use dynamically
sized stack buffers.

Disable stack protection warnings for sources which use dynamically
sized stack buffers.

Apply NetBSD changes to DTrace.

Ok with core@.

Add the FreeBSD 8-RC1 changes for DTrace.

Ok with core@.