From: Doug Rupp <rupp@adacore.com>
Date: Thu, 11 Oct 2018 18:36:34 +0000 (+0000)
Subject: leverage linker relaxation on ppc vxworks RTPs
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=13c4e4031a391afb6368d7072217acde07607ff7;p=gcc.git

leverage linker relaxation on ppc vxworks RTPs

2018-10-11  Doug Rupp  <rupp@adacore.com>
            Olivier Hainque  <hainque@adacore.com>

        * config/rs6000/vxworks.h (VXWORKS_RELAX_LINK_SPEC): New macro.
        Pass --relax to the linker for RTPs.
        (LINK_SPEC): Append VXWORKS_RELAX_LINK_SPEC.

Co-Authored-By: Olivier Hainque <hainque@adacore.com>

From-SVN: r265054
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 421a4c3ed27..8172fcd9276 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2018-10-11  Doug Rupp  <rupp@adacore.com>
+            Olivier Hainque  <hainque@adacore.com>
+
+	* config/rs6000/vxworks.h (VXWORKS_RELAX_LINK_SPEC): New macro.
+	Pass --relax to the linker for RTPs.
+	(LINK_SPEC): Append VXWORKS_RELAX_LINK_SPEC.
+
 2018-10-11  Andrew Stubbs  <ams@codesourcery.com>
 	    Jan Hubicka  <jh@suse.cz>
 	    Martin Jambor  <mjambor@suse.cz>
diff --git a/gcc/config/rs6000/vxworks.h b/gcc/config/rs6000/vxworks.h
index b10955f071d..d2033f60c22 100644
--- a/gcc/config/rs6000/vxworks.h
+++ b/gcc/config/rs6000/vxworks.h
@@ -88,8 +88,15 @@ VXWORKS_ADDITIONAL_CPP_SPEC
 
 #undef  LIB_SPEC
 #define LIB_SPEC VXWORKS_LIB_SPEC
+
+/* For RTPs, leverage linker relaxation.  This helps programs referring
+   to, typically, kernel services too far away for short calls.  This is more
+   precise than -mlongcall and can be overriden with -Wl,--no-relax.  */
+#define VXWORKS_RELAX_LINK_SPEC "%{mrtp:--relax}"
+
 #undef  LINK_SPEC
-#define LINK_SPEC VXWORKS_LINK_SPEC
+#define LINK_SPEC VXWORKS_LINK_SPEC " " VXWORKS_RELAX_LINK_SPEC
+
 #undef  STARTFILE_SPEC
 #define STARTFILE_SPEC VXWORKS_STARTFILE_SPEC
 #undef  ENDFILE_SPEC