38 lines
1.1 KiB
ArmAsm
38 lines
1.1 KiB
ArmAsm
/* div64u() - 64 bit divided by unsigned giving unsigned long */
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/* Author: Kees J. Bot */
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/* 7 Dec 1995 */
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#include <minix/compiler.h>
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#include <machine/asm.h>
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ENTRY(div64u)
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/* unsigned long div64u(u64_t i, unsigned j); */
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xorl %edx, %edx
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movl 8(%esp), %eax /* i = (ih<<32) + il */
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divl 12(%esp) /* ih = q * j + r */
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movl 4(%esp), %eax
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divl 12(%esp) /* i / j = (q<<32) + ((r<<32) + il) / j */
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ret
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ENTRY(div64u64)
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/* u64_t div64u64(u64_t i, unsigned j); */
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xorl %edx, %edx
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movl 12(%esp), %eax /* i = (ih<<32) + il */
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divl 16(%esp) /* ih = q * j + r */
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movl 4(%esp), %ecx /* get pointer to result */
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movl %eax, 4(%ecx) /* store high-order result */
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movl 8(%esp), %eax
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divl 16(%esp) /* i / j = (q<<32) + ((r<<32) + il) / j */
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movl %eax, 0(%ecx) /* store low result */
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movl %ecx, %eax /* return pointer to result struct */
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ret BYTES_TO_POP_ON_STRUCT_RETURN
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ENTRY(rem64u)
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/* unsigned rem64u(u64_t i, unsigned j); */
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pop %ecx
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call _C_LABEL(div64u)
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movl %edx, %eax
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jmp *%ecx
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/* */
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/* $PchId: div64u.ack.s,v 1.2 1996/04/11 18:59:57 philip Exp $ */
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