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36 lines
879 B
36 lines
879 B
7 years ago
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#ifndef _RISCV_BITS_H
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#define _RISCV_BITS_H
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#define likely(x) __builtin_expect((x), 1)
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#define unlikely(x) __builtin_expect((x), 0)
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#define ROUNDUP(a, b) ((((a)-1)/(b)+1)*(b))
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#define ROUNDDOWN(a, b) ((a)/(b)*(b))
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#define MAX(a, b) ((a) > (b) ? (a) : (b))
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#define MIN(a, b) ((a) < (b) ? (a) : (b))
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#define CLAMP(a, lo, hi) MIN(MAX(a, lo), hi)
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#define EXTRACT_FIELD(val, which) (((val) & (which)) / ((which) & ~((which)-1)))
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#define INSERT_FIELD(val, which, fieldval) (((val) & ~(which)) | ((fieldval) * ((which) & ~((which)-1))))
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#define STR(x) XSTR(x)
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#define XSTR(x) #x
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#if __riscv_xlen == 64
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# define SLL32 sllw
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# define STORE sd
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# define LOAD ld
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# define LWU lwu
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# define LOG_REGBYTES 3
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#else
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# define SLL32 sll
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# define STORE sw
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# define LOAD lw
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# define LWU lw
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# define LOG_REGBYTES 2
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#endif
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#define REGBYTES (1 << LOG_REGBYTES)
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#endif
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