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47 lines
586 B
47 lines
586 B
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* unsigned long __xdiv64_32(unsigned long long n, unsigned long d); |
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*/ |
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#include <linux/linkage.h> |
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.text |
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ENTRY(__xdiv64_32) |
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#ifdef CONFIG_CPU_LITTLE_ENDIAN |
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mov r4, r0 |
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mov r5, r1 |
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#else |
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mov r4, r1 |
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mov r5, r0 |
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#endif |
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cmp/hs r6, r1 |
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bf.s 1f |
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mov #0, r2 |
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mov r1, r2 |
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mov #0, r3 |
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div0u |
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.rept 32 |
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rotcl r2 |
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div1 r6, r3 |
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.endr |
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rotcl r2 |
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mul.l r6, r2 |
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sts macl, r3 |
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sub r3, r1 |
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1: |
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div0u |
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.rept 32 |
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rotcl r0 |
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div1 r6, r1 |
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.endr |
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#ifdef CONFIG_CPU_LITTLE_ENDIAN |
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mov r2, r1 |
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rts |
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rotcl r0 |
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#else |
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rotcl r0 |
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mov r0, r1 |
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rts |
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mov r2, r0 |
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#endif
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