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66 lines
1.3 KiB
66 lines
1.3 KiB
2 years ago
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static inline unsigned char get_fs_byte(const char * addr)
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{
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unsigned register char _v;
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__asm__ ("movb %%fs:%1,%0":"=r" (_v):"m" (*addr));
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return _v;
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}
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static inline unsigned short get_fs_word(const unsigned short *addr)
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{
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unsigned short _v;
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__asm__ ("movw %%fs:%1,%0":"=r" (_v):"m" (*addr));
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return _v;
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}
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static inline unsigned long get_fs_long(const unsigned long *addr)
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{
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unsigned long _v;
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__asm__ ("movl %%fs:%1,%0":"=r" (_v):"m" (*addr)); \
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return _v;
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}
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static inline void put_fs_byte(char val,char *addr)
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{
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__asm__ ("movb %0,%%fs:%1"::"r" (val),"m" (*addr));
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}
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static inline void put_fs_word(short val,short * addr)
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{
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__asm__ ("movw %0,%%fs:%1"::"r" (val),"m" (*addr));
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}
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static inline void put_fs_long(unsigned long val,unsigned long * addr)
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{
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__asm__ ("movl %0,%%fs:%1"::"r" (val),"m" (*addr));
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}
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/*
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* Someone who knows GNU asm better than I should double check the followig.
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* It seems to work, but I don't know if I'm doing something subtly wrong.
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* --- TYT, 11/24/91
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* [ nothing wrong here, Linus ]
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*/
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static inline unsigned long get_fs()
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{
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unsigned short _v;
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__asm__("mov %%fs,%%ax":"=a" (_v):);
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return _v;
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}
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static inline unsigned long get_ds()
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{
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unsigned short _v;
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__asm__("mov %%ds,%%ax":"=a" (_v):);
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return _v;
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}
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static inline void set_fs(unsigned long val)
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{
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__asm__("mov %0,%%fs"::"a" ((unsigned short) val));
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}
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