35 lines
707 B
ArmAsm
35 lines
707 B
ArmAsm
/* cmp64*() - 64 bit compare Author: Kees J. Bot */
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/* 7 Dec 1995 */
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#include <machine/asm.h>
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ENTRY(cmp64)
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/* int cmp64(u64_t i, u64_t j); */
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movl %esp, %ecx
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0:
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xorl %eax, %eax
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movl 4(%ecx), %edx
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subl 12(%ecx), %edx
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movl 8(%ecx), %edx
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sbbl 16(%ecx), %edx
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sbbl %eax, %eax /* eax = - (i < j) */
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movl 12(%ecx), %edx
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subl 4(%ecx), %edx
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movl 16(%ecx), %edx
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sbbl 8(%ecx), %edx
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adcl $0, %eax /* eax = (i > j) - (i < j) */
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ret
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ENTRY(cmp64u)
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/* int cmp64u(u64_t i, unsigned j); */
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ENTRY(cmp64ul)
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/* int cmp64ul(u64_t i, unsigned long j); */
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movl %esp, %ecx
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push 16(%ecx)
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movl $0, 16(%ecx)
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call 0b
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pop 16(%ecx)
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ret
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/* */
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/* $PchId: cmp64.ack.s,v 1.2 1996/04/11 18:59:57 philip Exp $ */
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