linux内核的/include/asm-arm/type.h
#ifndef __ASSEMBLY__
typedef signed char s8; /*为有符号字符型取名为s8*/
typedef usigned char u8; /*为无符号字符型取名为u8*/
typedef signed short s16; /*为有符号短整型取名为s16*/
typedef usigned short u16; /*为无符号短整型取名为u16*/
typedef signed int s32; /*为有符号整型取名为s32*/
typedef usigned int u32; /*为无符号整型取名为u32*/
typedef signed long long s64; /*为有符号长长型取名为s64*/
typedef usigned long long u64; /*为无符号长长型取名为u64*/
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