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68 lines
1.4 KiB
68 lines
1.4 KiB
/* 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\t" \ |
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"lpa %%r0(%1),%0" \ |
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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\t" \ |
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"lpa %%r0(%%sr3,%1),%0" \ |
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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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