73 lines
1.5 KiB
C
73 lines
1.5 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __PARISC_SPECIAL_INSNS_H
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#define __PARISC_SPECIAL_INSNS_H
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#define lpa(va) ({ \
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unsigned long pa; \
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__asm__ __volatile__( \
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"copy %%r0,%0\n" \
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"8:\tlpa %%r0(%1),%0\n" \
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"9:\n" \
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ASM_EXCEPTIONTABLE_ENTRY(8b, 9b) \
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: "=&r" (pa) \
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: "r" (va) \
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: "memory" \
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); \
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pa; \
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})
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#define lpa_user(va) ({ \
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unsigned long pa; \
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__asm__ __volatile__( \
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"copy %%r0,%0\n" \
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"8:\tlpa %%r0(%%sr3,%1),%0\n" \
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"9:\n" \
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ASM_EXCEPTIONTABLE_ENTRY(8b, 9b) \
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: "=&r" (pa) \
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: "r" (va) \
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: "memory" \
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); \
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pa; \
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})
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#define mfctl(reg) ({ \
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unsigned long cr; \
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__asm__ __volatile__( \
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"mfctl " #reg ",%0" : \
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"=r" (cr) \
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); \
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cr; \
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})
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#define mtctl(gr, cr) \
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__asm__ __volatile__("mtctl %0,%1" \
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: /* no outputs */ \
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: "r" (gr), "i" (cr) : "memory")
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/* these are here to de-mystefy the calling code, and to provide hooks */
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/* which I needed for debugging EIEM problems -PB */
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#define get_eiem() mfctl(15)
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static inline void set_eiem(unsigned long val)
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{
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mtctl(val, 15);
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}
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#define mfsp(reg) ({ \
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unsigned long cr; \
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__asm__ __volatile__( \
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"mfsp " #reg ",%0" : \
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"=r" (cr) \
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); \
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cr; \
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})
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#define mtsp(val, cr) \
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{ if (__builtin_constant_p(val) && ((val) == 0)) \
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__asm__ __volatile__("mtsp %%r0,%0" : : "i" (cr) : "memory"); \
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else \
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__asm__ __volatile__("mtsp %0,%1" \
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: /* no outputs */ \
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: "r" (val), "i" (cr) : "memory"); }
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#endif /* __PARISC_SPECIAL_INSNS_H */
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