freebsd-dev/cddl
Mark Johnston 03a5f9f0fd Remove drti.o's dependency on libelf. This makes it possible to add DTrace
probes to userland programs and libraries without also needing to link
libelf.

dtrace -G places the __SUNW_dof symbol at the beginning of the DOF (DTrace
probe and provider metdata) section in the generated object file; drti.o
now just uses this symbol to locate the section. A complication occurs
when multiple dtrace-generated object files are linked together, since the
__SUNW_dof symbol defined in each file is global. This is handled by
using objcopy(1) to convert __SUNW_dof to a local symbol once drti.o has
been linked with the generated object file. Upstream, this is done using a
linker feature not present in GNU ld.

Differential Revision:	https://reviews.freebsd.org/D1757
Reviewed by:	rpaulo
MFC after:	1 month
Relnotes:	yes
2015-02-18 03:54:54 +00:00
..
compat/opensolaris Use calloc() instead of malloc() + bzero(). This also gets rid of a warning 2014-12-08 06:10:47 +00:00
contrib Remove drti.o's dependency on libelf. This makes it possible to add DTrace 2015-02-18 03:54:54 +00:00
lib Initial version of DTrace on ARM32. 2015-02-10 19:41:30 +00:00
sbin MFV r267565: 2014-07-01 06:43:15 +00:00
tests Add placeholder Kyuafiles for various top-level hierarchies. 2014-04-21 21:39:25 +00:00
usr.bin mdoc: improvements to SEE ALSO. 2014-12-27 08:31:52 +00:00
usr.sbin Initial version of DTrace on ARM32. 2015-02-10 19:41:30 +00:00
Makefile Use src.opts.mk in preference to bsd.own.mk except where we need stuff 2014-05-06 04:22:01 +00:00
Makefile.inc Make DTrace stuff compile with C99 standard. 2014-08-22 20:04:51 +00:00