memio.s

来自「uboot详细解读可用启动引导LINUX2.6内核」· S 代码 · 共 68 行

#include	"macros.h"


	.globl pci_read_cfg_byte

pci_read_cfg_byte:
	config_addr
	config_data	3
	eieio
	sync
	lbz	r3, 0(r9)
	blr


	.globl pci_write_cfg_byte

pci_write_cfg_byte:
	config_addr
	config_data	3
	stb	r6, 0(r9)
	eieio
	sync
	blr


	.globl pci_read_cfg_word

pci_read_cfg_word:
	config_addr
	config_data	2
	lhbrx	r3, 0, r9
	eieio
	sync
	blr


	.globl pci_write_cfg_word

pci_write_cfg_word:
	config_addr
	config_data	2
	sthbrx	r6, 0, r9
	eieio
	sync
	blr


	.globl pci_read_cfg_long

pci_read_cfg_long:
	config_addr
	config_data	0
	lwbrx	r3, 0, r9
	eieio
	sync
	blr


	.globl pci_write_cfg_long

pci_write_cfg_long:
	config_addr
	config_data	0
	stwbrx	r6, 0, r9
	eieio
	sync
	blr