sparc/sparc64: use crtendS.o for default-pie executables [PR96190]

In --enable-default-pie mode compiler should switch from
using crtend.o to crtendS.o. On sparc it is especially important
because crtend.o contains PIC-unfriendly code.

We use GNU_USER_TARGET_ENDFILE_SPEC as a baseline spec to get
crtendS.o instead of crtend.o in !no-pie mode.

gcc:

2020-07-14  Sergei Trofimovich  <siarheit@google.com>

	PR target/96190
	* config/sparc/linux.h (ENDFILE_SPEC): Use GNU_USER_TARGET_ENDFILE_SPEC
	to get crtendS.o for !no-pie mode.
	* config/sparc/linux64.h (ENDFILE_SPEC): Ditto.

(cherry picked from commit 87891d5eafe8d1de90b9d9b056eca81c508d1c77)

diff --git a/gcc/config/sparc/linux.h b/gcc/config/sparc/linux.h
index 81201e67a2f3dac84c22b33fd90ea258e501ad9a..63853e60c039977669fd1845074b612f6d050c66 100644 (file)
--- a/gcc/config/sparc/linux.h
+++ b/gcc/config/sparc/linux.h
@@ -27,16 +27,10 @@ along with GCC; see the file COPYING3.  If not see
     }                                          \
   while (0)
 
-/* Provide a ENDFILE_SPEC appropriate for GNU/Linux.  Here we tack on
-   the GNU/Linux magical crtend.o file (see crtstuff.c) which
-   provides part of the support for getting C++ file-scope static
-   object constructed before entering `main', followed by a normal
-   GNU/Linux "finalizer" file, `crtn.o'.  */
-
 #undef  ENDFILE_SPEC
 #define ENDFILE_SPEC \
-  "%{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s\
-   %{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s}"
+  GNU_USER_TARGET_ENDFILE_SPEC \
+  "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s}"
 
 /* -mcpu=native handling only makes sense with compiler running on
    a SPARC chip.  */

diff --git a/gcc/config/sparc/linux64.h b/gcc/config/sparc/linux64.h
index a1a0efd8f285b37811f2ab50cef7ee9e956a4c46..19ce84d7adb046991cd27aca323274dd2582564e 100644 (file)
--- a/gcc/config/sparc/linux64.h
+++ b/gcc/config/sparc/linux64.h
@@ -44,16 +44,10 @@ along with GCC; see the file COPYING3.  If not see
 #undef ASM_CPU64_DEFAULT_SPEC
 #define ASM_CPU64_DEFAULT_SPEC "-Av9a"
 
-/* Provide a ENDFILE_SPEC appropriate for GNU/Linux.  Here we tack on
-   the GNU/Linux magical crtend.o file (see crtstuff.c) which
-   provides part of the support for getting C++ file-scope static
-   object constructed before entering `main', followed by a normal
-   GNU/Linux "finalizer" file, `crtn.o'.  */
-
 #undef ENDFILE_SPEC
 #define ENDFILE_SPEC \
-  "%{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s\
-   %{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s}"
+  GNU_USER_TARGET_ENDFILE_SPEC \
+  "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s}"
 
 /* The default code model.  */
 #undef SPARC_DEFAULT_CMODEL