minix/lib/libc/arch/i386/int64/sub64.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

18 lines
434 B
ArmAsm

/* sub64() - 64 bit subtraction Author: Kees J. Bot */
/* 7 Dec 1995 */
#include <minix/compiler.h>
#include <machine/asm.h>
ENTRY(sub64)
/* u64_t sub64(u64_t i, u64_t j); */
movl 4(%esp), %eax
movl 8(%esp), %edx
subl 16(%esp), %edx
movl %edx, (%eax)
movl 12(%esp), %edx
sbbl 20(%esp), %edx
movl %edx, 4(%eax)
ret BYTES_TO_POP_ON_STRUCT_RETURN
/* */
/* $PchId: sub64.ack.s,v 1.2 1996/04/11 18:59:57 philip Exp $ */