aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorUlrich Drepper <drepper@redhat.com>2000-07-21 06:43:05 +0000
committerUlrich Drepper <drepper@redhat.com>2000-07-21 06:43:05 +0000
commitf53c03c20d6039d78cf1ccb43fbbbe79e0ec7e9e (patch)
treefa9ef879669c57ff5becd3911f5ee26211229ecd
parentd052b31b79a3681db7de04177a55b04354320a61 (diff)
downloadglibc-f53c03c20d6039d78cf1ccb43fbbbe79e0ec7e9e.zip
glibc-f53c03c20d6039d78cf1ccb43fbbbe79e0ec7e9e.tar.gz
glibc-f53c03c20d6039d78cf1ccb43fbbbe79e0ec7e9e.tar.bz2
Update.
* elf/rtld.c: Define _dl_bind_not variable. (process_envvars): Recognize LD_BIND_NOT and set _dl_bind_not. * elf/dl-support.c: Likewise. * sysdeps/generic/ldsodefs.h: Declare _dl_bind_not. * elf/dl-runtime.c (fixup): Don't remember looked up value if _dl_bind_not. (profile_fixup): Likewise.
-rw-r--r--ChangeLog8
-rw-r--r--elf/dl-runtime.c6
-rw-r--r--elf/dl-support.c5
-rw-r--r--elf/rtld.c8
-rw-r--r--sysdeps/generic/ldsodefs.h3
5 files changed, 28 insertions, 2 deletions
diff --git a/ChangeLog b/ChangeLog
index 47ee8b7..5d9be22 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,13 @@
2000-07-20 Ulrich Drepper <drepper@redhat.com>
+ * elf/rtld.c: Define _dl_bind_not variable.
+ (process_envvars): Recognize LD_BIND_NOT and set _dl_bind_not.
+ * elf/dl-support.c: Likewise.
+ * sysdeps/generic/ldsodefs.h: Declare _dl_bind_not.
+ * elf/dl-runtime.c (fixup): Don't remember looked up value if
+ _dl_bind_not.
+ (profile_fixup): Likewise.
+
* libio/Makefile (routines): Add fwide.
* libio/iofwide.c (_IO_fwide): Remove locking. This is done in
fwide now. Internal calls to _IO_fwide must do locking themselves
diff --git a/elf/dl-runtime.c b/elf/dl-runtime.c
index bff27e7..5774609 100644
--- a/elf/dl-runtime.c
+++ b/elf/dl-runtime.c
@@ -117,6 +117,9 @@ fixup (
value = elf_machine_plt_value (l, reloc, value);
/* Finally, fix up the plt itself. */
+ if (__builtin_expect (_dl_bind_not, 0))
+ return value;
+
return elf_machine_fixup_plt (l, result, reloc, rel_addr, value);
}
#endif
@@ -205,7 +208,8 @@ profile_fixup (
value = elf_machine_plt_value (l, reloc, value);
/* Store the result for later runs. */
- *resultp = value;
+ if (__builtin_expect (! _dl_bind_not, 1))
+ *resultp = value;
}
(*mcount_fct) (retaddr, value);
diff --git a/elf/dl-support.c b/elf/dl-support.c
index 8b11039..ec0bbb2 100644
--- a/elf/dl-support.c
+++ b/elf/dl-support.c
@@ -67,6 +67,9 @@ void *__libc_stack_end;
/* Path where the binary is found. */
const char *_dl_origin_path;
+/* Nonzero if runtime lookup should not update the .got/.plt. */
+int _dl_bind_not;
+
/* Initially empty list of loaded objects. */
struct link_map *_dl_loaded;
@@ -109,6 +112,8 @@ non_dynamic_init (void)
_dl_lazy = *(getenv ("LD_BIND_NOW") ?: "") == '\0';
+ _dl_bind_not = *(getenv ("LD_BIND_NOT") ?: "") != '\0';
+
_dl_dynamic_weak = *(getenv ("LD_DYNAMIC_WEAK") ?: "") == '\0';
#ifdef DL_PLATFORM_INIT
diff --git a/elf/rtld.c b/elf/rtld.c
index 8276b79..1d144c5 100644
--- a/elf/rtld.c
+++ b/elf/rtld.c
@@ -96,6 +96,7 @@ int _dl_debug_statistics;
const char *_dl_inhibit_rpath; /* RPATH values which should be
ignored. */
const char *_dl_origin_path;
+int _dl_bind_not;
/* This is a pointer to the map for the main object and through it to
all loaded objects. */
@@ -1363,7 +1364,12 @@ process_envvars (enum mode *modep, int *lazyp)
case 8:
/* Do we bind early? */
if (memcmp (&envline[3], "BIND_NOW", 8) == 0)
- bind_now = envline[12] != '\0';
+ {
+ bind_now = envline[12] != '\0';
+ break;
+ }
+ if (memcmp (&envline[3], "BIND_NOT", 8) == 0)
+ _dl_bind_not = envline[12] != '\0';
break;
case 9:
diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h
index 2f81770..b4b01e8 100644
--- a/sysdeps/generic/ldsodefs.h
+++ b/sysdeps/generic/ldsodefs.h
@@ -195,6 +195,9 @@ extern int _dl_dynamic_weak;
/* The array with message we print as a last resort. */
extern const char _dl_out_of_memory[];
+/* Nonzero if runtime lookups should not update the .got/.plt. */
+extern int _dl_bind_not;
+
/* OS-dependent function to open the zero-fill device. */
extern int _dl_sysdep_open_zero_fill (void); /* dl-sysdep.c */