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| author | David S. Miller <davem@davemloft.net> | 2012-03-28 22:35:26 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-03-28 22:35:26 -0700 |
| commit | 88d85d4f001fac0fd7ef4e3d05ca8a7d50b0c98f (patch) | |
| tree | dac097e3214f049492bbf41a575b6d846af3dd9e /sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S | |
| parent | e5aa83e16d02bc8f1b1a352f83e12f3f14c4d4ac (diff) | |
| download | glibc-88d85d4f001fac0fd7ef4e3d05ca8a7d50b0c98f.tar.gz | |
Optimize mempcpy on sparc.
* sysdeps/sparc/sparc32/memcpy.S: Implement mempcpy using a stub
that branches into memcpy.
* sysdeps/sparc/sparc64/memcpy.S: Likewise.
* sysdeps/sparc/sparc64/multiarch/memcpy-niagara1.S: Likewise.
* sysdeps/sparc/sparc64/multiarch/memcpy-niagara2.S: Likewise.
* sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: Likewise.
* sysdeps/sparc/sparc64/multiarch/memcpy.S: Add mempcpy multiarch
bits.
* sysdeps/sparc/sparc64/rtld-memcpy.c: Include generic mempcpy
implementation too.
* sysdeps/sparc/mempcpy.S: New file.
Diffstat (limited to 'sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S')
| -rw-r--r-- | sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S b/sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S index 7e21665d5f..0784ba9b5d 100644 --- a/sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S +++ b/sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S @@ -38,6 +38,11 @@ .text +ENTRY(__mempcpy_ultra3) + ba,pt %XCC, 101f + add %o0, %o2, %g5 +END(__mempcpy_ultra3) + /* Special/non-trivial issues of this code: * * 1) %o5 is preserved from VISEntryHalf to VISExitHalf @@ -57,6 +62,7 @@ ENTRY(__memcpy_ultra3) 100: /* %o0=dst, %o1=src, %o2=len */ mov %o0, %g5 +101: cmp %o2, 0 be,pn %XCC, out 218: or %o0, %o1, %o3 |