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Add SystemTap static probes to the runtime linker. [BZ #14298]

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This commit is contained in:
Gary Benson
2012-07-26 11:03:35 +01:00
parent 9f98c16cfe
commit 815e6fa3e0
7 changed files with 173 additions and 5 deletions
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15
elf/dl-open.c
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@@ -32,6 +32,7 @@
#include <caller.h>
#include <sysdep-cancel.h>
#include <tls.h>
#include <stap-probe.h>
#include <dl-dst.h>
@@ -291,6 +292,7 @@ dl_open_worker (void *a)
struct r_debug *r = _dl_debug_initialize (0, args->nsid);
r->r_state = RT_CONSISTENT;
_dl_debug_state ();
LIBC_PROBE (map_complete, 3, args->nsid, r, new);
/* Print scope information. */
if (__builtin_expect (GLRO(dl_debug_mask) & DL_DEBUG_SCOPES, 0))
@@ -376,10 +378,19 @@ dl_open_worker (void *a)
}
}
int relocation_in_progress = 0;
for (size_t i = nmaps; i-- > 0; )
{
l = maps[i];
if (! relocation_in_progress)
{
/* Notify the debugger that relocations are about to happen. */
LIBC_PROBE (reloc_start, 2, args->nsid, r);
relocation_in_progress = 1;
}
#ifdef SHARED
if (__builtin_expect (GLRO(dl_profile) != NULL, 0))
{
@@ -544,6 +555,10 @@ cannot load any more object with static TLS"));
}
}
/* Notify the debugger all new objects have been relocated. */
if (relocation_in_progress)
LIBC_PROBE (reloc_complete, 3, args->nsid, r, new);
/* Run the initializer functions of new objects. */
_dl_init (new, args->argc, args->argv, args->env);