initial commit

oscar64/autotest/volatiletest.c

@@ -0,0 +1,143 @@
+#include <assert.h>
+#include <autotest.h>
+
+inline char udiff(char a, char b)
+{
+	return b - a;
+}
+
+void test_readorder(void)
+{
+	char	u0 = testio.cnt0;
+	char	u1 = testio.cnt0;
+	char	t = testio.cnt0;
+	char	u2 = testio.cnt0;
+
+	t = testio.cnt0;
+	t = testio.cnt0;
+	t = testio.cnt0;
+	char	u3 = testio.cnt0;
+	for(char i=0; i<16; i++)
+		t = testio.cnt0;
+	char	u4 = testio.cnt0;
+
+	assert(udiff(u0, u1) == 1);
+	assert(udiff(u1, u2) == 2);
+	assert(udiff(u2, u3) == 4);
+	assert(udiff(u3, u4) == 17);
+}
+
+void test_writeorder(void)
+{
+	char	u0 = testio.cnt0;
+	char	u1 = testio.cnt0;
+	testio.cnt0 = 0;
+	char	u2 = testio.cnt0;
+
+	testio.cnt0 = 0;
+	testio.cnt0 = 0;
+	testio.cnt0 = 0;
+	char	u3 = testio.cnt0;
+	for(char i=0; i<16; i++)
+		testio.cnt0 = 0;
+	char	u4 = testio.cnt0;
+
+	assert(udiff(u0, u1) == 1);
+	assert(udiff(u1, u2) == 2);
+	assert(udiff(u2, u3) == 4);
+	assert(udiff(u3, u4) == 17);	
+}
+
+volatile char buffer[16];
+
+void test_dma(void)
+{
+	testio.dmaddr = unsigned(buffer);
+	testio.dmdata = 0;
+	testio.dmdata = 1;
+	testio.dmdata = 2;
+	testio.dmdata = 3;
+	testio.dmdata = 0;
+	testio.dmdata = 0;
+	testio.dmdata = 0;
+	testio.dmdata = 0;
+	testio.dmdata = 4;
+	testio.dmdata = 5;
+	testio.dmdata = 6;
+	testio.dmdata = 7;
+	testio.dmdata = 0;
+	testio.dmdata = 1;
+	testio.dmdata = 2;
+	testio.dmdata = 3;
+	assert(buffer[ 0] == 0);
+	assert(buffer[ 1] == 1);
+	assert(buffer[ 2] == 2);
+	assert(buffer[ 3] == 3);
+	assert(buffer[ 4] == 0);
+	assert(buffer[ 5] == 0);
+	assert(buffer[ 6] == 0);
+	assert(buffer[ 7] == 0);
+	assert(buffer[ 8] == 4);
+	assert(buffer[ 9] == 5);
+	assert(buffer[10] == 6);
+	assert(buffer[11] == 7);
+	assert(buffer[12] == 0);
+	assert(buffer[13] == 1);
+	assert(buffer[14] == 2);
+	assert(buffer[15] == 3);
+	testio.dmaddr = unsigned(buffer);
+	char tbuffer[16];
+	for(char i=0; i<16; i++)
+		tbuffer[i] = testio.dmdata;
+	assert(tbuffer[ 0] == 0);
+	assert(tbuffer[ 1] == 1);
+	assert(tbuffer[ 2] == 2);
+	assert(tbuffer[ 3] == 3);
+	assert(tbuffer[ 4] == 0);
+	assert(tbuffer[ 5] == 0);
+	assert(tbuffer[ 6] == 0);
+	assert(tbuffer[ 7] == 0);
+	assert(tbuffer[ 8] == 4);
+	assert(tbuffer[ 9] == 5);
+	assert(tbuffer[10] == 6);
+	assert(tbuffer[11] == 7);
+	assert(tbuffer[12] == 0);
+	assert(tbuffer[13] == 1);
+	assert(tbuffer[14] == 2);
+	assert(tbuffer[15] == 3);
+}
+
+char read_cnt0(void)
+{
+	return testio.cnt0;
+}
+
+void test_unusedread(void)
+{
+	char base0 = testio.cnt0;
+	read_cnt0();
+	char end0 = testio.cnt0;
+
+	assert(udiff(base0, end0) == 2);
+}
+
+void test_readsmallfunc(void)
+{
+	char base0 = testio.cnt0;
+	char u0 = read_cnt0();
+	char u1 = read_cnt0();
+	char end0 = testio.cnt0;
+
+	assert(udiff(base0, u0) == 1);
+	assert(udiff(u0, u1) == 1);
+	assert(udiff(u1, end0) == 1);
+}
+
+int main(void)
+{
+	test_readorder();
+	test_writeorder();
+	test_dma();
+	test_unusedread();
+	test_readsmallfunc();
+}