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| author | Alan Modra <amodra@gmail.com> | 2013-08-17 18:45:31 +0930 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2013-10-04 10:40:11 +0930 |
| commit | 43b84013714c46e6dcae4a5564c5527777ad5e08 (patch) | |
| tree | 7d7c8aa8ec9c84991e0fc2f1e24a2c711c5de3ed /sysdeps/powerpc/powerpc32/strcpy.S | |
| parent | 8a7413f9b036da83ffde491a37d9d2340bc321a7 (diff) | |
| download | glibc-43b84013714c46e6dcae4a5564c5527777ad5e08.zip glibc-43b84013714c46e6dcae4a5564c5527777ad5e08.tar.gz glibc-43b84013714c46e6dcae4a5564c5527777ad5e08.tar.bz2 | |
PowerPC LE strcpy
http://sourceware.org/ml/libc-alpha/2013-08/msg00100.html
The strcpy changes for little-endian are quite straight-forward, just
a matter of rotating the last word differently.
I'll note that the powerpc64 version of stpcpy is just begging to be
converted to use 64-bit loads and stores..
* sysdeps/powerpc/powerpc64/strcpy.S: Add little-endian support:
* sysdeps/powerpc/powerpc32/strcpy.S: Likewise.
* sysdeps/powerpc/powerpc64/stpcpy.S: Likewise.
* sysdeps/powerpc/powerpc32/stpcpy.S: Likewise.
Diffstat (limited to 'sysdeps/powerpc/powerpc32/strcpy.S')
| -rw-r--r-- | sysdeps/powerpc/powerpc32/strcpy.S | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/sysdeps/powerpc/powerpc32/strcpy.S b/sysdeps/powerpc/powerpc32/strcpy.S index 4ae577d..e938cc4 100644 --- a/sysdeps/powerpc/powerpc32/strcpy.S +++ b/sysdeps/powerpc/powerpc32/strcpy.S @@ -62,7 +62,22 @@ L(g2): add rTMP, rFEFE, rWORD mr rALT, rWORD /* We've hit the end of the string. Do the rest byte-by-byte. */ -L(g1): rlwinm. rTMP, rALT, 8, 24, 31 +L(g1): +#ifdef __LITTLE_ENDIAN__ + rlwinm. rTMP, rALT, 0, 24, 31 + stb rALT, 4(rDEST) + beqlr- + rlwinm. rTMP, rALT, 24, 24, 31 + stb rTMP, 5(rDEST) + beqlr- + rlwinm. rTMP, rALT, 16, 24, 31 + stb rTMP, 6(rDEST) + beqlr- + rlwinm rTMP, rALT, 8, 24, 31 + stb rTMP, 7(rDEST) + blr +#else + rlwinm. rTMP, rALT, 8, 24, 31 stb rTMP, 4(rDEST) beqlr- rlwinm. rTMP, rALT, 16, 24, 31 @@ -73,6 +88,7 @@ L(g1): rlwinm. rTMP, rALT, 8, 24, 31 beqlr- stb rALT, 7(rDEST) blr +#endif /* Oh well. In this case, we just do a byte-by-byte copy. */ .align 4 |