Drazen Urch
7bd1550195
* Checkpoint * cpu cycle ffi * Rename * mixnode feature * Bundle libcpucycles
21 lines
382 B
C
21 lines
382 B
C
// version 20230106
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// public domain
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// djb
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// adapted from sparc64-rdtick.c
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#include "cpucycles_internal.h"
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long long ticks(void)
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{
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long long result;
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asm volatile("stckf 0(%0)" :: "a"(&result) : "memory","cc");
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return result;
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}
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long long ticks_setup(void)
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{
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if (!cpucycles_works(ticks)) return cpucycles_SKIP;
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return 4096000000; // manual says 2^12 per microsecond
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}
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