pokel.c

来自「一个类linux的dos下开发的操作系统.」· C语言 代码 · 共 13 行

/*****************************************************************************
*****************************************************************************/
__inline__ void pokel(unsigned short sel, unsigned long off, unsigned long val)
{
	__asm__("mov %0,%%es\n"
		"es\n"
		"movl %1,(%2)"
		:
/* xxx - 2nd "r" means any reg, but you want one of the regs than can be
used in an address without a prefix: EBP, EBX, ESI, EDI */
		: "m"(sel), "r"(val), "r"(off));
}