Repo init

fibb/Makefile

@@ -0,0 +1,13 @@
+all: fibb_arm fibb_ccnt sec_ccnt
+
+fibb_arm: fibb_c.c fibb.s
+	gcc fibb.s fibb_c.c -o fibb_arm
+
+fibb_ccnt: fibb_ccnt.c fibb.s timestamp.s
+	gcc fibb.s timestamp.s fibb_ccnt.c -o fibb_ccnt
+
+sec_ccnt: sec_ccnt.c timestamp.s
+	gcc sec_ccnt.c timestamp.s -o sec_ccnt
+
+clean:
+	rm fibb_arm fibb_ccnt sec_ccnt

fibb/fibb.s

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+.global fibb
+.type fibb, %function
+
+.text
+fibb:
+push {r4, lr}
+
+cmp r0, #0
+moveq r0, #0
+popeq {r4, pc}
+
+cmp r0, #1
+moveq r0, #1
+popeq {r4, pc}
+
+sub r0, r0, #1
+push {r0}
+bl fibb
+mov r4, r0
+pop {r0}
+
+sub r0, r0, #1
+bl fibb
+add r0, r0, r4
+
+pop {r4, pc}

fibb/fibb_c.c

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+#include <stdio.h>
+
+// Jan Potocki 2020
+
+unsigned long fibb(unsigned long n);
+
+int main()
+{
+	unsigned long term, result;
+
+	scanf("%lu", &term);
+	result = fibb(term);
+	printf("%lu\n", result);
+
+	return 0;
+}

fibb/fibb_ccnt.c

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+#include <stdio.h>
+
+// Jan Potocki 2020
+
+unsigned long fibb(unsigned long n);
+unsigned long timestamp();
+
+int main()
+{
+	unsigned long term, result;
+	unsigned long tstamp1, tstamp2;
+
+	scanf("%lu", &term);
+	tstamp1 = timestamp();
+	result = fibb(term);
+	tstamp2 = timestamp();
+
+	printf("%lu\n", result);
+
+	if(tstamp2 > tstamp1)
+	{
+		printf("Cycles: %lu\n", tstamp2-tstamp1);
+	}
+	else
+	{
+		printf("Cycles: invalid measure\n");
+	}
+
+	return 0;
+}

fibb/sec_ccnt.c

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+#include <stdio.h>
+#include <time.h>
+
+// Jan Potocki 2020
+
+unsigned long timestamp();
+
+int main()
+{
+	unsigned long tstamp1, tstamp2;
+
+	tstamp1 = timestamp();
+	
+	// Tego z jakiegos powodu nie mozna zrobic za pomoca sleep(1)...
+	// ...cykle nie sa zliczane prawidlowo - wiec goraca petla
+	clock_t t;
+	do
+	{
+		t = clock();
+	}
+	while(t < CLOCKS_PER_SEC);
+
+	tstamp2 = timestamp();
+
+	if(tstamp2 > tstamp1)
+	{
+		printf("Cycles: %lu\n", tstamp2-tstamp1);
+	}
+	else
+	{
+		printf("Cycles: invalid measure\n");
+	}
+
+	return 0;
+}

fibb/timestamp.s

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+.global timestamp
+.type timestamp, %function
+
+.text
+timestamp:
+isb
+mrc p15, 0, r0, c9, c13, 0
+mov pc, lr