34 lines
624 B
C
34 lines
624 B
C
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#include "util.h"
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/* Measure the time it takes to access a block with virtual address addr. */
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CYCLES measure_one_block_access_time(ADDR_PTR addr)
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{
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CYCLES cycles;
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asm volatile("mov %1, %%r8\n\t"
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"lfence\n\t"
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"rdtsc\n\t"
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"mov %%eax, %%edi\n\t"
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"mov (%%r8), %%r8\n\t"
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"lfence\n\t"
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"rdtsc\n\t"
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"sub %%edi, %%eax\n\t"
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: "=a"(cycles) /*output*/
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: "r"(addr)
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: "r8", "edi");
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return cycles;
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}
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/*
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* CLFlushes the given address.
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*
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* Note: clflush is provided to help you debug and should not be used in your
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* final submission
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*/
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void clflush(ADDR_PTR addr)
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{
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asm volatile ("clflush (%0)"::"r"(addr));
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}
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