[glibc/release/2.33/master] s390: Use long branches across object boundaries (jgh instead of jh)

Florian Weimer fw@sourceware.org
Wed Nov 10 14:22:57 GMT 2021


https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=9edf29fd72ad12b2b74c8d838222616de5be6dc8

commit 9edf29fd72ad12b2b74c8d838222616de5be6dc8
Author: Florian Weimer <fweimer@redhat.com>
Date:   Wed Nov 10 15:21:37 2021 +0100

    s390: Use long branches across object boundaries (jgh instead of jh)
    
    Depending on the layout chosen by the linker, the 16-bit displacement
    of the jh instruction is insufficient to reach the target label.
    
    Analysis of the linker failure was carried out by Nick Clifton.
    
    Reviewed-by: Carlos O'Donell <carlos@redhat.com>
    Reviewed-by: Stefan Liebler <stli@linux.ibm.com>
    (cherry picked from commit 98966749f2b418825ff2ea496a0ee89fe63d2cc8)

Diff:
---
 sysdeps/s390/memmem-arch13.S | 2 +-
 sysdeps/s390/strstr-arch13.S | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/sysdeps/s390/memmem-arch13.S b/sysdeps/s390/memmem-arch13.S
index c5c8d8c97e..58df8cdb14 100644
--- a/sysdeps/s390/memmem-arch13.S
+++ b/sysdeps/s390/memmem-arch13.S
@@ -41,7 +41,7 @@ ENTRY(MEMMEM_ARCH13)
 #  error The arch13 variant of memmem needs the z13 variant of memmem!
 # endif
 	clgfi	%r5,9
-	jh	MEMMEM_Z13
+	jgh	MEMMEM_Z13
 
 	aghik	%r0,%r5,-1		/* vll needs highest index.  */
 	bc	4,0(%r14)		/* cc==1: return if needle-len == 0.  */
diff --git a/sysdeps/s390/strstr-arch13.S b/sysdeps/s390/strstr-arch13.S
index c7183e627c..222a6de91a 100644
--- a/sysdeps/s390/strstr-arch13.S
+++ b/sysdeps/s390/strstr-arch13.S
@@ -49,7 +49,7 @@ ENTRY(STRSTR_ARCH13)
 #  error The arch13 variant of strstr needs the z13 variant of strstr!
 # endif
 	clgfi	%r4,9
-	jh	STRSTR_Z13
+	jgh	STRSTR_Z13
 
 	/* In case of a partial match, the vstrs instruction returns the index
 	   of the partial match in a vector-register.  Then we have to


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