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- /* SPDX-License-Identifier: GPL-2.0 */
- .global __udivsi3
- .section .text..SHmedia32,"ax"
- .align 2
- /*
- inputs: r4,r5
- clobbered: r18,r19,r20,r21,r22,r25,tr0
- result in r0.
- */
- __udivsi3:
- addz.l r5,r63,r22
- nsb r22,r0
- shlld r22,r0,r25
- shlri r25,48,r25
- movi 0xffffffffffffbb0c,r20 /* shift count eqiv 76 */
- sub r20,r25,r21
- mmulfx.w r21,r21,r19
- mshflo.w r21,r63,r21
- ptabs r18,tr0
- mmulfx.w r25,r19,r19
- sub r20,r0,r0
- /* bubble */
- msub.w r21,r19,r19
- /*
- * It would be nice for scheduling to do this add to r21 before
- * the msub.w, but we need a different value for r19 to keep
- * errors under control.
- */
- addi r19,-2,r21
- mulu.l r4,r21,r18
- mmulfx.w r19,r19,r19
- shlli r21,15,r21
- shlrd r18,r0,r18
- mulu.l r18,r22,r20
- mmacnfx.wl r25,r19,r21
- /* bubble */
- sub r4,r20,r25
- mulu.l r25,r21,r19
- addi r0,14,r0
- /* bubble */
- shlrd r19,r0,r19
- mulu.l r19,r22,r20
- add r18,r19,r18
- /* bubble */
- sub.l r25,r20,r25
- mulu.l r25,r21,r19
- addz.l r25,r63,r25
- sub r25,r22,r25
- shlrd r19,r0,r19
- mulu.l r19,r22,r20
- addi r25,1,r25
- add r18,r19,r18
- cmpgt r25,r20,r25
- add.l r18,r25,r0
- blink tr0,r63
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