diff options
author | Ingo Molnar <mingo@elte.hu> | 2009-09-20 20:24:58 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2009-09-20 20:25:03 +0200 |
commit | bfefb7a0c6e08736f2d5917c468467f134bf28bb (patch) | |
tree | 7aa7084114dc083fe5b4d7b532901bdeb67188e7 /arch/sh/lib64 | |
parent | 8d0cc631f6dd0a9283ceb7d61d8b85ecbcd355ea (diff) | |
parent | 78f28b7c555359c67c2a0d23f7436e915329421e (diff) |
Merge branch 'linus' into x86/urgent
Merge reason: Bring in changes that the next patch will depend on.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/sh/lib64')
-rw-r--r-- | arch/sh/lib64/Makefile | 2 | ||||
-rw-r--r-- | arch/sh/lib64/clear_page.S | 54 |
2 files changed, 1 insertions, 55 deletions
diff --git a/arch/sh/lib64/Makefile b/arch/sh/lib64/Makefile index 334bb2da36e..1fee75aa1f9 100644 --- a/arch/sh/lib64/Makefile +++ b/arch/sh/lib64/Makefile @@ -11,7 +11,7 @@ # Panic should really be compiled as PIC lib-y := udelay.o dbg.o panic.o memcpy.o memset.o \ - copy_user_memcpy.o copy_page.o clear_page.o strcpy.o strlen.o + copy_user_memcpy.o copy_page.o strcpy.o strlen.o # Extracted from libgcc lib-y += udivsi3.o udivdi3.o sdivsi3.o diff --git a/arch/sh/lib64/clear_page.S b/arch/sh/lib64/clear_page.S deleted file mode 100644 index 007ab48ecc1..00000000000 --- a/arch/sh/lib64/clear_page.S +++ /dev/null @@ -1,54 +0,0 @@ -/* - Copyright 2003 Richard Curnow, SuperH (UK) Ltd. - - This file is subject to the terms and conditions of the GNU General Public - License. See the file "COPYING" in the main directory of this archive - for more details. - - Tight version of memset for the case of just clearing a page. It turns out - that having the alloco's spaced out slightly due to the increment/branch - pair causes them to contend less for access to the cache. Similarly, - keeping the stores apart from the allocos causes less contention. => Do two - separate loops. Do multiple stores per loop to amortise the - increment/branch cost a little. - - Parameters: - r2 : source effective address (start of page) - - Always clears 4096 bytes. - - Note : alloco guarded by synco to avoid TAKum03020 erratum - -*/ - - .section .text..SHmedia32,"ax" - .little - - .balign 8 - .global clear_page -clear_page: - pta/l 1f, tr1 - pta/l 2f, tr2 - ptabs/l r18, tr0 - - movi 4096, r7 - add r2, r7, r7 - add r2, r63, r6 -1: - alloco r6, 0 - synco ! TAKum03020 - addi r6, 32, r6 - bgt/l r7, r6, tr1 - - add r2, r63, r6 -2: - st.q r6, 0, r63 - st.q r6, 8, r63 - st.q r6, 16, r63 - st.q r6, 24, r63 - addi r6, 32, r6 - bgt/l r7, r6, tr2 - - blink tr0, r63 - - |