35 lines
891 B
C
35 lines
891 B
C
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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int main(int argc, char *argv[])
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{
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/* Print */
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if (argc > 1) {
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// Wait for all memory operations to finish
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__asm__ volatile ("fence");
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if (strcmp(argv[1], "mem-in-order") == 0) {
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__asm__ volatile ("fence");
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__asm__ volatile ("csrwi 0x801, 2");
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} else if (strcmp(argv[1], "all-in-order") == 0) {
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__asm__ volatile ("fence");
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__asm__ volatile ("csrwi 0x801, 7");
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} else if (strcmp(argv[1], "all-out-of-order") == 0) {
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__asm__ volatile ("fence");
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__asm__ volatile ("csrwi 0x801, 0");
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} else {
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fprintf(stderr, "unknown '%s', use: mem-in-order, all-in-order or all-out-of-order\n", argv[1]);
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exit(1);
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}
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}
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// Wait for all memory operations to finish
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__asm__ volatile ("fence");
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unsigned result;
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asm("csrr %0, 0x801" : "=r"(result) : );
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printf("CSR 0x801 = %xu\n", result);
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return 0;
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}
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