Lines Matching +full:left +full:- +full:aligned

15  * Fast assembler language version of the following C-program for memset
16  * which represents the `standard' for the C-library.
25  *		} while (--n != 0);
35  *	Then store as many 4-byte chunks, followed by trailing bytes.
39  *      	store 8-bytes chunks to align the address on 64 byte boundary
42  *			64-byte cache line to zero which will also clear the
49  *              	In the main loop, continue pre-setting the first long
56  *       	store remaining data in 64-byte chunks until less than
59  *       Store as many 8-byte chunks, followed by trailing bytes.
109 	.size		M7clear_page,.-M7clear_page
110 	.size		M7clear_user_page,.-M7clear_user_page
122 	.size		M7bzero,.-M7bzero
144 	andcc   %o5, 7, %o3             ! is sp1 aligned on a 8 byte bound?
145 	bz,pt   %xcc, .blkalign         ! already long word aligned
146 	 sub     %o3, 8, %o3             ! -(bytes till long word aligned)
149 	! Set -(%o3) bytes till sp1 long word aligned
155 	! Now sp1 is long word aligned (sp1 is found in %o5)
161 	andcc   %o5, 63, %o3            ! is sp1 block aligned?
162 	bz,pt   %xcc, .blkwr            ! now block aligned
163 	 sub     %o3, 64, %o3            ! o3 is -(bytes till block aligned)
166 	! Store -(%o3) bytes till dst is block (64 byte) aligned.
168 	! Recall that dst is already long word aligned
175 	! Now sp1 is block aligned
179 	 and     %o2, 63, %o3            ! %o3 = bytes left after blk stores.
184 	                                ! must be > pre-cleared lines
187 	! initial cache-clearing stores
201 	stxa    %o1, [%o5+8-128]%asi
203 	 stxa    %o1, [%o5+8-64]%asi
217 	stxa    %o1, [%o5-8]%asi
241 	stxa    %o1, [%o5-8]%asi
299 	stx     %o1, [%o5-16]
301 	 stx     %o1, [%o5-8]
308 	 and     %o2, 7, %o2             ! calc bytes left after long words
322 	andcc   %o5, 3, %o3             ! is sp1 aligned on a word boundary
333 	st      %o1, [%o5]              ! 4-byte writing loop
352 	.size		M7memset,.-M7memset