S390: Refactor ifunc implementations and enable ifunc-test-framework.

On s390 all ifunc resolvers were implemented in multiarch/ifunc-resolve.c.
The resulting single object files has undefined references to all ifunc-functions.
This patch introduces one multiarch/<func>.c file for each of memcpy, memcmp
and memset with the function specific ifunc resolver. The different function
implementations are now implemented in multiarch/<func>-s390x.S
(moved from multiarch/<func>.S).

The new multiarch/ifunc-resolve.h file contains the ifunc-resolver macro
and other helper-macros. They are merged and are now used in common for
32/64bit. Therefore the __<func>_g5/__<func>_z900 functions were renamed to
__<func>_default.

This patch also enables testing the ifunc implementations by implementing
the function __libc_ifunc_impl_list. It uses the helper-macros of ifunc-resolve.h.

ChangeLog:

	* sysdeps/s390/s390-32/multiarch/Makefile (sysdep_routines):
	Remove ifunc-resolve, add memset-s390, memcpy-s390, memcmp-s390.
	* sysdeps/s390/s390-32/multiarch/ifunc-resolve.c: Delete File.
	* sysdeps/s390/s390-32/multiarch/memcmp.S: Move to ...
	* sysdeps/s390/s390-32/multiarch/memcmp-s390.S: ... here.
	(memcmp, bcmp): Use __memcmp_default as alias source.
	* sysdeps/s390/s390-32/multiarch/memcmp.c: New File.
	* sysdeps/s390/s390-32/memcmp.S (__memcmp_g5):
	Rename to __memcmp_default.
	* sysdeps/s390/s390-32/multiarch/memcpy.S: Move to ...
	* sysdeps/s390/s390-32/multiarch/memcpy-s390.S: ... here.
	(memcpy): Use __memcpy_default as alias source.
	* sysdeps/s390/s390-32/multiarch/memcpy.c: New File.
	* sysdeps/s390/s390-32/memcpy.S (__memcpy_g5):
	Rename to __memcpy_default.
	* sysdeps/s390/s390-32/multiarch/memset.S: Move to ...
	* sysdeps/s390/s390-32/multiarch/memset-s390.S: ... here.
	(memset): Use __memset_default as alias source.
	* sysdeps/s390/s390-32/multiarch/memset.c: New File.
	* sysdeps/s390/s390-32/memset.S (__memset_g5):
	Rename to __memset_default.
	* sysdeps/s390/s390-64/multiarch/Makefile (sysdep_routines):
	Remove ifunc-resolve, add memset-s390x, memcpy-s390x, memcmp-s390x.
	* sysdeps/s390/s390-64/multiarch/ifunc-resolve.c: Delete File.
	* sysdeps/s390/s390-64/multiarch/memcmp.S: Move to ...
	* sysdeps/s390/s390-64/multiarch/memcmp-s390x.S: ... here.
	(memcmp, bcmp): Use __memcmp_default as alias source.
	* sysdeps/s390/s390-64/multiarch/memcmp.c: New File.
	* sysdeps/s390/s390-64/memcmp.S (__memcmp_z900):
	Rename to __memcmp_default.
	* sysdeps/s390/s390-64/multiarch/memcpy.S: Move to ...
	* sysdeps/s390/s390-64/multiarch/memcpy-s390x.S: ... here.
	(memcpy): Use __memcpy_default as alias source.
	* sysdeps/s390/s390-64/multiarch/memcpy.c: New File.
	* sysdeps/s390/s390-64/memcpy.S (__memcpy_z900):
	Rename to __memcpy_default.
	* sysdeps/s390/s390-64/multiarch/memset.S: Move to ...
	* sysdeps/s390/s390-64/multiarch/memset-s390x.S: ... here.
	(memset): Use __memset_default as alias source.
	* sysdeps/s390/s390-64/multiarch/memset.c: New File.
	* sysdeps/s390/s390-64/memset.S (__memset_z900):
	Rename to __memset_default.
	* sysdeps/s390/multiarch/ifunc-resolve.h: New File.
	* sysdeps/s390/multiarch/ifunc-impl-list.c: New File.

1 files changed, 20 insertions, 20 deletions

diff --git a/sysdeps/s390/s390-64/memset.S b/sysdeps/s390/s390-64/memset.S
index 1e307d7ec8..e16e44a16c 100644
--- a/sysdeps/s390/s390-64/memset.S
+++ b/sysdeps/s390/s390-64/memset.S
@@ -29,35 +29,35 @@
        .text
 
 #ifdef USE_MULTIARCH
-ENTRY(__memset_z900)
+ENTRY(__memset_default)
 #else
 ENTRY(memset)
 #endif
 	.machine "z900"
-        ltgr    %r4,%r4
-        je      .L_Z900_4
-        stc     %r3,0(%r2)
-        cghi    %r4,1
-        lgr     %r1,%r2
-        je      .L_Z900_4
-        aghi    %r4,-2
-        srlg    %r3,%r4,8
-        ltgr    %r3,%r3
-        jne     .L_Z900_14
+	ltgr    %r4,%r4
+	je      .L_Z900_4
+	stc     %r3,0(%r2)
+	cghi    %r4,1
+	lgr     %r1,%r2
+	je      .L_Z900_4
+	aghi    %r4,-2
+	srlg    %r3,%r4,8
+	ltgr    %r3,%r3
+	jne     .L_Z900_14
 .L_Z900_3:
-        larl    %r3,.L_Z900_18
-        ex      %r4,0(%r3)
+	larl    %r3,.L_Z900_18
+	ex      %r4,0(%r3)
 .L_Z900_4:
-        br      %r14
+	br      %r14
 .L_Z900_14:
-        mvc     1(256,%r1),0(%r1)
-        la      %r1,256(%r1)
-        brctg   %r3,.L_Z900_14
-        j       .L_Z900_3
+	mvc     1(256,%r1),0(%r1)
+	la      %r1,256(%r1)
+	brctg   %r3,.L_Z900_14
+	j       .L_Z900_3
 .L_Z900_18:
-        mvc     1(1,%r1),0(%r1)
+	mvc     1(1,%r1),0(%r1)
 #ifdef USE_MULTIARCH
-END(__memset_z900)
+END(__memset_default)
 #else
 END(memset)
 libc_hidden_builtin_def (memset)