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

1 files changed, 1 insertions, 8 deletions

diff --git a/cddl/contrib/opensolaris/lib/libdtrace/common/dt_aggregate.c b/cddl/contrib/opensolaris/lib/libdtrace/common/dt_aggregate.c
index ac32f76..f6c9622 100644
--- a/cddl/contrib/opensolaris/lib/libdtrace/common/dt_aggregate.c
+++ b/cddl/contrib/opensolaris/lib/libdtrace/common/dt_aggregate.c
@@ -36,6 +36,7 @@
 #include <alloca.h>
 #else
 #include <sys/sysctl.h>
+#include <libproc_compat.h>
 #endif
 #include <limits.h>
 
@@ -264,11 +265,7 @@ dt_aggregate_usym(dtrace_hdl_t *dtp, uint64_t *data)
 
 	dt_proc_lock(dtp, P);
 
-#if defined(sun)
 	if (Plookup_by_addr(P, *pc, NULL, 0, &sym) == 0)
-#else
-	if (proc_addr2sym(P, *pc, NULL, 0, &sym) == 0)
-#endif
 		*pc = sym.st_value;
 
 	dt_proc_unlock(dtp, P);
@@ -291,11 +288,7 @@ dt_aggregate_umod(dtrace_hdl_t *dtp, uint64_t *data)
 
 	dt_proc_lock(dtp, P);
 
-#if defined(sun)
 	if ((map = Paddr_to_map(P, *pc)) != NULL)
-#else
-	if ((map = proc_addr2map(P, *pc)) != NULL)
-#endif
 		*pc = map->pr_vaddr;
 
 	dt_proc_unlock(dtp, P);