minix/lib/libc/arch/i386/int64/sub64u.S
Arun Thomas 9a21d1a2fd Macros for symbols used in both ASM and C
-The macros take care of prepending the leading underscore when
 necessary.
2010-08-17 16:44:07 +00:00

20 lines
508 B
ArmAsm

/* sub64() - unsigned from 64 bit subtraction Author: Kees J. Bot */
/* 7 Dec 1995 */
#include <minix/compiler.h>
#include <machine/asm.h>
ENTRY(sub64u)
/* u64_t sub64u(u64_t i, unsigned j); */
ENTRY(sub64ul)
/* u64_t sub64ul(u64_t i, unsigned long j); */
movl 4(%esp), %eax
movl 8(%esp), %edx
subl 16(%esp), %edx
movl %edx, (%eax)
movl 12(%esp), %edx
sbbl $0, %edx
movl %edx, 4(%eax)
ret BYTES_TO_POP_ON_STRUCT_RETURN
/* */
/* $PchId: sub64u.ack.s,v 1.2 1996/04/11 18:59:57 philip Exp $ */