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timer-irq.c
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timer-irq.c
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#include "timers.h"
#include <gba_input.h>
#include <gba_interrupt.h>
#include <gba_timers.h>
#include <gba_systemcalls.h>
#include <stdio.h>
#include <string.h>
#include "suite.h"
#define VERSIONS 10
struct TimerIRQTest {
const char* testName;
u16 timer;
u16 results[VERSIONS];
};
static const struct TimerIRQTest timerIRQTests[] = {
{ "FFFF", 0xFFFF, { 0, 1, 2, 3, 0x51, 0x51, 0x51, 0x51, 0x51, 0x51 } },
{ "FFFE", 0xFFFE, { 0, 1, 2, 3, 4, 0x52, 0x52, 0x52, 0x52, 0x52 } },
{ "FFFD", 0xFFFD, { -1, 0, 1, 2, 3, 4, 0x52, 0x52, 0x52, 0x52 } },
{ "FFFC", 0xFFFC, { -2, -1, 0, 1, 2, 3, 4, 0x52, 0x52, 0x52 } },
{ "FFFB", 0xFFFB, { -3, -2, -1, 0, 1, 2, 3, 4, 0x52, 0x52 } },
{ "FFFA", 0xFFFA, { -4, -3, -2, -1, 0, 1, 2, 3, 4, 0x52 } },
{ "FFF9", 0xFFF9, { -5, -4, -3, -2, -1, 0, 1, 2, 3, 4 } },
{ "FFF8", 0xFFF8, { -6, -5, -4, -3, -2, -1, 0, 1, 2, 3 } },
{ "FFF7", 0xFFF7, { -7, -6, -5, -4, -3, -2, -1, 0, 1, 2 } },
};
static const u32 nTimerIRQTests = sizeof(timerIRQTests) / sizeof(*timerIRQTests);
static unsigned passes;
static unsigned totalResults;
IWRAM_CODE
static void testIrq(void) {
REG_TM0CNT_H = 0x0;
}
IWRAM_CODE
__attribute__((noinline))
static void runTest(struct TimerIRQTest* test) {
REG_IME = 0;
irqInit();
irqSet(IRQ_TIMER0, testIrq);
int ie = REG_IE;
REG_IE = IRQ_TIMER0;
REG_IME = 1;
__asm__ volatile("ldr r0, =0f \n"
"bx r0 \n"
".arm; 0:\n"
"ldr r1, =0x4000100 \n"
"mov r2, #0xC00000 \n"
"orr r3, r2, %[timer] \n"
"ldr r4, =activeTestInfo+4 \n"
"mov r5, #0 \n"
"strh r5, [r4] \n"
"str r3, [r1] \n"
"strh r2, [r1] \n"
"ldrh r0, [r1] \n"
"strh r0, [%[result], #0] \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"add r5, #1 \n"
"strh r5, [r4] \n"
"str r3, [r1] \n"
"strh r2, [r1] \n"
"nop \n"
"ldrh r0, [r1] \n"
"strh r0, [%[result], #2] \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"add r5, #1 \n"
"strh r5, [r4] \n"
"str r3, [r1] \n"
"strh r2, [r1] \n"
"nop \n"
"nop \n"
"ldrh r0, [r1] \n"
"strh r0, [%[result], #4] \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"add r5, #1 \n"
"strh r5, [r4] \n"
"str r3, [r1] \n"
"strh r2, [r1] \n"
"nop \n"
"nop \n"
"nop \n"
"ldrh r0, [r1] \n"
"strh r0, [%[result], #6] \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"add r5, #1 \n"
"strh r5, [r4] \n"
"str r3, [r1] \n"
"strh r2, [r1] \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"ldrh r0, [r1] \n"
"strh r0, [%[result], #8] \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"add r5, #1 \n"
"strh r5, [r4] \n"
"str r3, [r1] \n"
"strh r2, [r1] \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"ldrh r0, [r1] \n"
"strh r0, [%[result], #10] \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"add r5, #1 \n"
"strh r5, [r4] \n"
"str r3, [r1] \n"
"strh r2, [r1] \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"ldrh r0, [r1] \n"
"strh r0, [%[result], #12] \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"add r5, #1 \n"
"strh r5, [r4] \n"
"str r3, [r1] \n"
"strh r2, [r1] \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"ldrh r0, [r1] \n"
"strh r0, [%[result], #14] \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"add r5, #1 \n"
"strh r5, [r4] \n"
"str r3, [r1] \n"
"strh r2, [r1] \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"ldrh r0, [r1] \n"
"strh r0, [%[result], #16] \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"add r5, #1 \n"
"strh r5, [r4] \n"
"str r3, [r1] \n"
"strh r2, [r1] \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"ldrh r0, [r1] \n"
"strh r0, [%[result], #18] \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"nop \n"
"ldr r5, =0xFFFF \n"
"strh r5, [r4] \n"
"ldr r0, =1f \n"
"add r0, #1 \n"
"bx r0 \n"
".ltorg \n"
".thumb; 1:"
:
: [result]"r"(test->results), [timer]"r"(test->timer)
: "r0", "r1", "r2", "r3", "r4", "r5", "memory");
REG_IME = 0;
REG_IE = ie;
REG_IME = 1;
}
static void printResult(int offset, int line, const char* preface, uint16_t value, uint16_t expected) {
static const int base = 96;
if (offset > line || base + 32 * (line - offset) > 576) {
return;
}
snprintf(&textGrid[base + 32 * (line - offset)], 31, "%-4s: %04X", preface, value);
if (value == expected) {
strncpy(&textGrid[base + 32 * (line - offset) + 19], "PASS", 10);
} else {
snprintf(&textGrid[base + 32 * (line - offset) + 19], 16, "!= %04X", expected);
}
}
static void doResult(const char* preface, const char* testName, uint16_t value, uint16_t expected) {
if (value != expected) {
debugprintf("FAIL: %s %s", testName, preface);
savprintf("Got %04X != %04X: FAIL", value, expected);
} else {
debugprintf("PASS: %s %s", testName, preface);
++passes;
}
totalResults++;
}
static void printResults(const char* preface, const struct TimerIRQTest* values, const struct TimerIRQTest* expected, int base) {
snprintf(&textGrid[32], 31, "Timer IRQ test: %s", preface);
printResult(base, 0, "0 nops", values->results[0], expected->results[0]);
printResult(base, 1, "1 nop ", values->results[1], expected->results[1]);
printResult(base, 2, "2 nops", values->results[2], expected->results[2]);
printResult(base, 3, "3 nops", values->results[3], expected->results[3]);
printResult(base, 4, "4 nops", values->results[4], expected->results[4]);
printResult(base, 5, "5 nops", values->results[5], expected->results[5]);
printResult(base, 6, "6 nops", values->results[6], expected->results[6]);
printResult(base, 7, "7 nops", values->results[7], expected->results[7]);
printResult(base, 8, "8 nops", values->results[8], expected->results[8]);
printResult(base, 9, "9 nops", values->results[9], expected->results[9]);
}
static void runTimerIRQSuite(void) {
passes = 0;
totalResults = 0;
const struct TimerIRQTest* activeTest = 0;
int i;
for (i = 0; i < nTimerIRQTests; ++i) {
struct TimerIRQTest currentTest = {0};
activeTestInfo.testId = i;
activeTest = &timerIRQTests[i];
memcpy(¤tTest, activeTest, sizeof(currentTest));
runTest(¤tTest);
savprintf("Timer IRQ test: %s", activeTest->testName);
doResult("0 nops", activeTest->testName, currentTest.results[0], activeTest->results[0]);
doResult("1 nop ", activeTest->testName, currentTest.results[1], activeTest->results[1]);
doResult("2 nops", activeTest->testName, currentTest.results[2], activeTest->results[2]);
doResult("3 nops", activeTest->testName, currentTest.results[3], activeTest->results[3]);
doResult("4 nops", activeTest->testName, currentTest.results[4], activeTest->results[4]);
doResult("5 nops", activeTest->testName, currentTest.results[5], activeTest->results[5]);
doResult("6 nops", activeTest->testName, currentTest.results[6], activeTest->results[6]);
doResult("7 nops", activeTest->testName, currentTest.results[7], activeTest->results[7]);
doResult("8 nops", activeTest->testName, currentTest.results[8], activeTest->results[8]);
doResult("9 nops", activeTest->testName, currentTest.results[9], activeTest->results[9]);
}
activeTestInfo.testId = -1;
}
static size_t listTimerIRQSuite(const char** names, size_t size, size_t offset) {
size_t i;
for (i = 0; i < size; ++i) {
if (i + offset >= nTimerIRQTests) {
break;
}
names[i] = timerIRQTests[i + offset].testName;
}
return i;
}
static void showTimerIRQSuite(size_t index) {
const struct TimerIRQTest* activeTest = &timerIRQTests[index];
struct TimerIRQTest currentTest = {0};
size_t resultIndex = 0;
memset(&textGrid[GRID_STRIDE], 0, sizeof(textGrid) - GRID_STRIDE);
memcpy(¤tTest, activeTest, sizeof(currentTest));
activeTestInfo.testId = index;
runTest(¤tTest);
updateTextGrid();
while (1) {
scanKeys();
u16 keys = keysDownRepeat();
if (keys & KEY_UP) {
if (resultIndex > 0) {
--resultIndex;
}
}
if (keys & KEY_DOWN) {
if (resultIndex < 0) {
++resultIndex;
}
}
if (keys & KEY_B) {
return;
}
printResults(activeTest->testName, ¤tTest, activeTest, resultIndex);
updateTextGrid();
}
activeTestInfo.testId = -1;
}
const struct TestSuite timerIRQTestSuite = {
.name = "Timer IRQ tests",
.run = runTimerIRQSuite,
.list = listTimerIRQSuite,
.show = showTimerIRQSuite,
.nTests = sizeof(timerIRQTests) / sizeof(*timerIRQTests),
.passes = &passes,
.totalResults = &totalResults
};