diff options
| author | Joern Rennecke <joern.rennecke@embecosm.com> | 2002-05-08 21:56:50 +0400 |
|---|---|---|
| committer | Joern Rennecke <joern.rennecke@embecosm.com> | 2002-05-08 21:56:50 +0400 |
| commit | 96bff22c5dd2df267b04aad3719950420eac0b43 (patch) | |
| tree | cf2f1921f16a8bb8d003e1f91c439f2d492e30c0 /newlib/libc | |
| parent | 0dc9d4d7edc08880ca691b7486ee1563305bb15b (diff) | |
* libc/machine/sh/memset.S (memset, __SHMEDIA__ code):
Also handle as single quad word when destination ends at last
byte of first quad word. Fix byte selection in single quad code.
Diffstat (limited to 'newlib/libc')
| -rw-r--r-- | newlib/libc/machine/sh/memset.S | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/newlib/libc/machine/sh/memset.S b/newlib/libc/machine/sh/memset.S index 6f1f396d7..3d6f8ef64 100644 --- a/newlib/libc/machine/sh/memset.S +++ b/newlib/libc/machine/sh/memset.S @@ -12,33 +12,35 @@ ENTRY(memset) #if __SHMEDIA__ pta/l multiquad, tr0 + andi r2, 7, r22 ptabs r18, tr2 mshflo.b r3,r3,r3 - mperm.w r3, r63, r3 - - andi r2, 7, r22 add r4, r22, r23 - shlri r23, 3, r24 - bnei/u r24, 0, tr0 + mperm.w r3, r63, r3 // Fill pattern now in every byte of r3 + + movi 8, r9 + bgtu/u r23, r9, tr0 ldlo.q r2, 0, r7 - shlli r4, 3, r4 + shlli r4, 2, r4 movi -1, r8 SHHI r8, r4, r8 - mcmv r7, r8, r22 - stlo.q r2, 0, r22 + SHHI r8, r4, r8 + mcmv r7, r8, r3 + stlo.q r2, 0, r3 blink tr2, r63 multiquad: pta/l lastquad, tr0 stlo.q r2, 0, r3 + shlri r23, 3, r24 add r2, r4, r5 beqi/u r24, 1, tr0 // lastquad pta/l loop, tr1 sub r2, r22, r25 andi r5, -8, r20 // calculate end address and addi r20, -7*8, r8 // loop end address; This might overflow, so we need - movi 8, r9 // to use a different test before we start the loop + // to use a different test before we start the loop bge/u r24, r9, tr1 // loop st.q r25, 8, r3 st.q r20, -8, r3 |