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authorH.J. Lu <hjl.tools@gmail.com>2017-11-13 08:02:39 -0800
committerH.J. Lu <hjl.tools@gmail.com>2017-11-13 08:02:52 -0800
commit4a306ef1c8ff1cac292c2fd56a3b91d7bfdecefc (patch)
tree48c4360f23ee98ce4355b932ba66b4c1226de0a7 /elf/dl-support.c
parente69897bf202e18034cbef26f363bae64de70a196 (diff)
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ld.so: Add architecture specific fields
To support Intel Control-flow Enforcement Technology (CET) run-time
control:

1. An architecture specific field in the writable ld.so namespace is
needed to indicate if CET features are enabled at run-time.
2. An architecture specific field in struct link_map is needed if
CET features are enabled in an ELF module.

This patch adds dl-procruntime.c to the writable ld.so namespace and
link_map.h to struct link_map.

Tested with build-many-glibcs.py.

	* elf/dl-support.c: Include <dl-procruntime.c>.
	* include/link.h: Include <link_map.h>.
	* sysdeps/generic/dl-procruntime.c: New file.
	* sysdeps/generic/link_map.h: Likewise.
	* sysdeps/generic/ldsodefs.h: Include <dl-procruntime.c> in
	the writable ld.so namespace.
Diffstat (limited to 'elf/dl-support.c')
-rw-r--r--elf/dl-support.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/elf/dl-support.c b/elf/dl-support.c
index 5e3de90598..235d3a7f46 100644
--- a/elf/dl-support.c
+++ b/elf/dl-support.c
@@ -126,6 +126,7 @@ int _dl_starting_up = 1;
 void *_dl_random;
 
 /* Get architecture specific initializer.  */
+#include <dl-procruntime.c>
 #include <dl-procinfo.c>
 
 /* Initial value of the CPU clock.  */