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| author | Stefan Liebler <stli@linux.ibm.com> | 2021-03-23 17:29:26 +0100 |
|---|---|---|
| committer | Stefan Liebler <stli@linux.ibm.com> | 2021-03-26 10:51:31 +0100 |
| commit | 7759be2593b689cb1eafc0f52ee7f59c639e5d2f (patch) | |
| tree | 9fe921acd60d3020da8dc14c6ed335ef6e92ae3d /sysdeps/s390/configure | |
| parent | 1966f47a1e54f962a355a5f6a6b730c9848ab956 (diff) | |
| download | glibc-7759be2593b689cb1eafc0f52ee7f59c639e5d2f.zip glibc-7759be2593b689cb1eafc0f52ee7f59c639e5d2f.tar.gz glibc-7759be2593b689cb1eafc0f52ee7f59c639e5d2f.tar.bz2 | |
S390: Also check vector support in memmove ifunc-selector [BZ #27511]
The arch13 memmove variant is currently selected by the ifunc selector
if the Miscellaneous-Instruction-Extensions Facility 3 facility bit
is present, but the function is also using vector instructions.
If the vector support is not present, one is receiving an operation
exception.
Therefore this patch also checks for vector support in the ifunc
selector and in ifunc-impl-list.c.
Just to be sure, the configure check is now also testing an arch13
vector instruction and an arch13 Miscellaneous-Instruction-Extensions
Facility 3 instruction.
Diffstat (limited to 'sysdeps/s390/configure')
| -rw-r--r-- | sysdeps/s390/configure | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/sysdeps/s390/configure b/sysdeps/s390/configure index 5f98640..7eaefba 100644 --- a/sysdeps/s390/configure +++ b/sysdeps/s390/configure @@ -123,7 +123,9 @@ void testinsn (char *buf) __asm__ (".machine \"arch13\" \n\t" ".machinemode \"zarch_nohighgprs\" \n\t" "lghi %%r0,16 \n\t" - "mvcrl 0(%0),32(%0)" : : "a" (buf) : "memory", "r0"); + "mvcrl 0(%0),32(%0) \n\t" + "vstrs %%v20,%%v20,%%v20,%%v20,0,2" + : : "a" (buf) : "memory", "r0"); } EOF if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS --shared conftest.c @@ -271,7 +273,9 @@ else void testinsn (char *buf) { __asm__ ("lghi %%r0,16 \n\t" - "mvcrl 0(%0),32(%0)" : : "a" (buf) : "memory", "r0"); + "mvcrl 0(%0),32(%0) \n\t" + "vstrs %%v20,%%v20,%%v20,%%v20,0,2" + : : "a" (buf) : "memory", "r0"); } EOF if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS --shared conftest.c |