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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/ia64/lib/flush.S | |
download | linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.bz2 linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'arch/ia64/lib/flush.S')
-rw-r--r-- | arch/ia64/lib/flush.S | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/arch/ia64/lib/flush.S b/arch/ia64/lib/flush.S new file mode 100644 index 000000000000..29c802b19669 --- /dev/null +++ b/arch/ia64/lib/flush.S @@ -0,0 +1,39 @@ +/* + * Cache flushing routines. + * + * Copyright (C) 1999-2001 Hewlett-Packard Co + * Copyright (C) 1999-2001 David Mosberger-Tang <davidm@hpl.hp.com> + */ +#include <asm/asmmacro.h> +#include <asm/page.h> + + /* + * flush_icache_range(start,end) + * Must flush range from start to end-1 but nothing else (need to + * be careful not to touch addresses that may be unmapped). + */ +GLOBAL_ENTRY(flush_icache_range) + .prologue + alloc r2=ar.pfs,2,0,0,0 + sub r8=in1,in0,1 + ;; + shr.u r8=r8,5 // we flush 32 bytes per iteration + .save ar.lc, r3 + mov r3=ar.lc // save ar.lc + ;; + + .body + + mov ar.lc=r8 + ;; +.Loop: fc in0 // issuable on M0 only + add in0=32,in0 + br.cloop.sptk.few .Loop + ;; + sync.i + ;; + srlz.i + ;; + mov ar.lc=r3 // restore ar.lc + br.ret.sptk.many rp +END(flush_icache_range) |