在x86汇编中,可以使用Intel 82599 10-Gigabit Ethernet Controller的相关指令来实现网卡的读取和写入。以下是一个简单的示例代码:
; 初始化网卡
init_network:
; 初始化网卡硬件
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
; 读取网卡MAC地址
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
mov dx, 0x10
in eax, dx
mov [mac_address], eax
; 初始化网卡接收和发送队列
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
; 设置网卡中断
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
; 启动网卡
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
ret
; 发送数据包
send_packet:
; 等待网卡可写
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
mov dx, 0x10
in eax, dx
test eax, eax
jz send_packet
; 写入数据包
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
mov dx, 0x10
mov eax, 0x12345678
out dx, eax
mov dx, 0x10
mov eax, 0x1234
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