diff options
author | James Hogan <james.hogan@imgtec.com> | 2012-10-05 17:02:09 +0100 |
---|---|---|
committer | James Hogan <james.hogan@imgtec.com> | 2013-03-02 20:09:52 +0000 |
commit | 086e9dc0e2ca925b1b58caefd04ed2757d14790b (patch) | |
tree | cfe182f1d07d40d09d2cae09e337423462250cac /arch/metag/lib/clear_page.S | |
parent | f507758ccbed5c354cc1ce3b8f53ea072d7bc222 (diff) |
metag: Optimised library functions
Add optimised library functions for metag.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Diffstat (limited to 'arch/metag/lib/clear_page.S')
-rw-r--r-- | arch/metag/lib/clear_page.S | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/metag/lib/clear_page.S b/arch/metag/lib/clear_page.S new file mode 100644 index 000000000000..43144eebec55 --- /dev/null +++ b/arch/metag/lib/clear_page.S @@ -0,0 +1,17 @@ + ! Copyright 2007,2008,2009 Imagination Technologies Ltd. + +#include <asm/page.h> + + .text + .global _clear_page + .type _clear_page,function + !! D1Ar1 - page +_clear_page: + MOV TXRPT,#((PAGE_SIZE / 8) - 1) + MOV D0Re0,#0 + MOV D1Re0,#0 +$Lclear_page_loop: + SETL [D1Ar1++],D0Re0,D1Re0 + BR $Lclear_page_loop + MOV PC,D1RtP + .size _clear_page,.-_clear_page |