diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/ia64/lib/copy_page.S')
-rw-r--r-- | ANDROID_3.4.5/arch/ia64/lib/copy_page.S | 98 |
1 files changed, 0 insertions, 98 deletions
diff --git a/ANDROID_3.4.5/arch/ia64/lib/copy_page.S b/ANDROID_3.4.5/arch/ia64/lib/copy_page.S deleted file mode 100644 index 127d1d05..00000000 --- a/ANDROID_3.4.5/arch/ia64/lib/copy_page.S +++ /dev/null @@ -1,98 +0,0 @@ -/* - * - * Optimized version of the standard copy_page() function - * - * Inputs: - * in0: address of target page - * in1: address of source page - * Output: - * no return value - * - * Copyright (C) 1999, 2001 Hewlett-Packard Co - * Stephane Eranian <eranian@hpl.hp.com> - * David Mosberger <davidm@hpl.hp.com> - * - * 4/06/01 davidm Tuned to make it perform well both for cached and uncached copies. - */ -#include <asm/asmmacro.h> -#include <asm/page.h> - -#define PIPE_DEPTH 3 -#define EPI p[PIPE_DEPTH-1] - -#define lcount r16 -#define saved_pr r17 -#define saved_lc r18 -#define saved_pfs r19 -#define src1 r20 -#define src2 r21 -#define tgt1 r22 -#define tgt2 r23 -#define srcf r24 -#define tgtf r25 -#define tgt_last r26 - -#define Nrot ((8*PIPE_DEPTH+7)&~7) - -GLOBAL_ENTRY(copy_page) - .prologue - .save ar.pfs, saved_pfs - alloc saved_pfs=ar.pfs,3,Nrot-3,0,Nrot - - .rotr t1[PIPE_DEPTH], t2[PIPE_DEPTH], t3[PIPE_DEPTH], t4[PIPE_DEPTH], \ - t5[PIPE_DEPTH], t6[PIPE_DEPTH], t7[PIPE_DEPTH], t8[PIPE_DEPTH] - .rotp p[PIPE_DEPTH] - - .save ar.lc, saved_lc - mov saved_lc=ar.lc - mov ar.ec=PIPE_DEPTH - - mov lcount=PAGE_SIZE/64-1 - .save pr, saved_pr - mov saved_pr=pr - mov pr.rot=1<<16 - - .body - - mov src1=in1 - adds src2=8,in1 - mov tgt_last = PAGE_SIZE - ;; - adds tgt2=8,in0 - add srcf=512,in1 - mov ar.lc=lcount - mov tgt1=in0 - add tgtf=512,in0 - add tgt_last = tgt_last, in0 - ;; -1: -(p[0]) ld8 t1[0]=[src1],16 -(EPI) st8 [tgt1]=t1[PIPE_DEPTH-1],16 -(p[0]) ld8 t2[0]=[src2],16 -(EPI) st8 [tgt2]=t2[PIPE_DEPTH-1],16 - cmp.ltu p6,p0 = tgtf, tgt_last - ;; -(p[0]) ld8 t3[0]=[src1],16 -(EPI) st8 [tgt1]=t3[PIPE_DEPTH-1],16 -(p[0]) ld8 t4[0]=[src2],16 -(EPI) st8 [tgt2]=t4[PIPE_DEPTH-1],16 - ;; -(p[0]) ld8 t5[0]=[src1],16 -(EPI) st8 [tgt1]=t5[PIPE_DEPTH-1],16 -(p[0]) ld8 t6[0]=[src2],16 -(EPI) st8 [tgt2]=t6[PIPE_DEPTH-1],16 - ;; -(p[0]) ld8 t7[0]=[src1],16 -(EPI) st8 [tgt1]=t7[PIPE_DEPTH-1],16 -(p[0]) ld8 t8[0]=[src2],16 -(EPI) st8 [tgt2]=t8[PIPE_DEPTH-1],16 - -(p6) lfetch [srcf], 64 -(p6) lfetch [tgtf], 64 - br.ctop.sptk.few 1b - ;; - mov pr=saved_pr,0xffffffffffff0000 // restore predicates - mov ar.pfs=saved_pfs - mov ar.lc=saved_lc - br.ret.sptk.many rp -END(copy_page) |