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🆕 uart驱动

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fslongjin
2022-04-15 15:23:17 +08:00
parent be8ac71aa9
commit 22359344e4
8 changed files with 188 additions and 26 deletions
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kernel/common/glib.h
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@ -17,6 +17,7 @@
: "memory") //关闭外部中断
#define nop() __asm__ __volatile__("nop\n\t")
#define hlt() __asm__ __volatile__("hlt\n\t")
#define pause() asm volatile ("pause\n\t"); // 处理器等待一段时间
//内存屏障
#define io_mfence() __asm__ __volatile__("mfence\n\t" :: \