diff options
Diffstat (limited to 'sysdeps/s390/s390-64/memset.S')
| -rw-r--r-- | sysdeps/s390/s390-64/memset.S | 51 |
1 files changed, 36 insertions, 15 deletions
diff --git a/sysdeps/s390/s390-64/memset.S b/sysdeps/s390/s390-64/memset.S index 03a77ee..6b3007b 100644 --- a/sysdeps/s390/s390-64/memset.S +++ b/sysdeps/s390/s390-64/memset.S @@ -17,27 +17,48 @@ License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ + +#include "sysdep.h" +#include "asm-syntax.h" + /* INPUT PARAMETERS %r2 = address of memory area %r3 = byte to fill memory with %r4 = number of bytes to fill. */ -#include "sysdep.h" -#include "asm-syntax.h" + .text - .text +#ifdef USE_MULTIARCH +ENTRY(memset_z900) +#else ENTRY(memset) - ltgr %r4,%r4 - jz .L1 - lgr %r0,%r2 # save source address - lgr %r1,%r3 # move pad byte to R1 - lgr %r3,%r4 - sgr %r4,%r4 # no source for MVCLE, only a pad byte - sgr %r5,%r5 -.L0: mvcle %r2,%r4,0(%r1) # thats it, MVCLE is your friend - jo .L0 - lgr %r2,%r0 # return value is source address -.L1: - br %r14 +#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 +.L_Z900_3: + larl %r3,.L_Z900_18 + ex %r4,0(%r3) +.L_Z900_4: + br %r14 +.L_Z900_14: + 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) +#ifdef USE_MULTIARCH +END(memset_z900) +#else END(memset) libc_hidden_builtin_def (memset) +#endif |