1 dnl PowerPC-32 mpn_lshift -- Shift a number left.
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5 dnl This file is part of the GNU MP Library.
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8 dnl it under the terms of the GNU Lesser General Public License as published by
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29 include(`../config.m4')
33 cmpi cr0,r5,12 C more than 12 limbs?
35 add r4,r4,r0 C make r4 point at end of s1
36 add r7,r3,r0 C make r7 point at end of res
37 bgt .LBIG C branch if more than 12 limbs
39 mtctr r5 C copy size into CTR
41 lwzu r11,-4(r4) C load first s1 limb
42 srw r3,r11,r8 C compute function return value
45 .Loop: lwzu r10,-4(r4)
66 stmw r24,-32(r1) C save registers we are supposed to preserve
69 srw r3,r9,r8 C compute function return value
73 andi. r10,r5,3 C count for spill loop
79 .Loop0: slw r12,r28,r6
85 bdnz .Loop0 C taken at most once!
93 .Le: srwi r5,r5,2 C count for unrolled loop
101 .LoopU: slw r9,r28,r6
143 lmw r24,-32(r1) C restore registers