Source code of Windows XP (NT5)
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59 lines
1.1 KiB

#include "ksia64.h"
LEAF_ENTRY (ChkSum)
.prologue
alloc t21 = ar.pfs, 3, 0, 0, 0
.save ar.lc, t22
mov t22 = ar.lc
zxt4 t3 = a2
;;
cmp4.eq pt0, pt1 = zero, a2
add t7 = 64, a1
add t3 = -1, t3
;;
(pt1) ld2.nta t0 = [a1], 2
mov ar.lc = t3
cmp4.ne pt2 = 1, a2
mov t10 = 0xffff
zxt4 a0 = a0
(pt0) br.cond.spnt cs20
;;
cs10:
(pt2) ld2.nta t4 = [a1], 2
add a2 = -1, a2
add a0 = t0, a0
;;
(pt1) lfetch.nta [t7], 64
extr.u t1 = a0, 16, 16
and t2 = a0, t10
;;
cmp4.ne pt2 = 1, a2
nop.f 0
tbit.nz pt1 = a1, 6
mov t0 = t4
add a0 = t1, t2
br.cloop.dptk cs10
;;
cs20:
nop.m 0
extr.u t1 = a0, 16, 16
;;
add a0 = t1, a0
;;
mov ar.lc = t22
and v0 = a0, t10
br.ret.sptk brp
LEAF_EXIT (ChkSum)