--- /dev/null
+#include "tests.h"
+#include "sim_avr.h"
+#include "sim_elf.h"
+#include "sim_core.h"
+#include "avr_uart.h"
+#include <stdio.h>
+#include <setjmp.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+#include <unistd.h>
+
+avr_cycle_count_t tests_cycle_count = 0;
+int tests_disable_stdout = 1;
+
+static char *test_name = "(uninitialized test)";
+static FILE *orig_stderr = NULL;
+static int finished = 0;
+
+static void atexit_handler(void) {
+ if (!finished)
+ _fail(NULL, 0, "Test exit without indicating success.");
+}
+
+void tests_success(void) {
+ if (orig_stderr)
+ stderr = orig_stderr;
+ fprintf(stderr, "OK: %s\n", test_name);
+ finished = 1;
+}
+
+void tests_init(int argc, char **argv) {
+ test_name = strdup(argv[0]);
+ atexit(atexit_handler);
+}
+
+static avr_cycle_count_t
+cycle_timer_longjmp_cb(struct avr_t *avr, avr_cycle_count_t when, void *param) {
+ jmp_buf *jmp = param;
+ longjmp(*jmp, LJR_CYCLE_TIMER);
+}
+
+static jmp_buf *special_deinit_jmpbuf = NULL;
+
+static void special_deinit_longjmp_cb(struct avr_t *avr) {
+ if (special_deinit_jmpbuf)
+ longjmp(*special_deinit_jmpbuf, LJR_SPECIAL_DEINIT);
+}
+
+static int my_avr_run(avr_t * avr)
+{
+ if (avr->state == cpu_Stopped)
+ return avr->state;
+
+ uint16_t new_pc = avr->pc;
+
+ if (avr->state == cpu_Running)
+ new_pc = avr_run_one(avr);
+
+ // if we just re-enabled the interrupts...
+ // double buffer the I flag, to detect that edge
+ if (avr->sreg[S_I] && !avr->i_shadow)
+ avr->pending_wait++;
+ avr->i_shadow = avr->sreg[S_I];
+
+ // run the cycle timers, get the suggested sleep time
+ // until the next timer is due
+ avr_cycle_count_t sleep = avr_cycle_timer_process(avr);
+
+ avr->pc = new_pc;
+
+ if (avr->state == cpu_Sleeping) {
+ if (!avr->sreg[S_I]) {
+ printf("simavr: sleeping with interrupts off, quitting gracefully\n");
+ avr_terminate(avr);
+ fail("Test case error: special_deinit() returned?");
+ exit(0);
+ }
+ /*
+ * try to sleep for as long as we can (?)
+ */
+ // uint32_t usec = avr_cycles_to_usec(avr, sleep);
+ // printf("sleep usec %d cycles %d\n", usec, sleep);
+ // usleep(usec);
+ avr->cycle += 1 + sleep;
+ }
+ // Interrupt servicing might change the PC too, during 'sleep'
+ if (avr->state == cpu_Running || avr->state == cpu_Sleeping)
+ avr_service_interrupts(avr);
+
+ // if we were stepping, use this state to inform remote gdb
+
+ return avr->state;
+}
+
+avr_t *tests_init_avr(const char *elfname) {
+ tests_cycle_count = 0;
+ if (tests_disable_stdout) {
+ orig_stderr = stderr;
+ fclose(stdout);
+ stderr = stdout;
+ }
+ elf_firmware_t fw;
+ if (elf_read_firmware(elfname, &fw))
+ fail("Failed to read ELF firmware \"%s\"", elfname);
+ avr_t *avr = avr_make_mcu_by_name(fw.mmcu);
+ if (!avr)
+ fail("Creating AVR failed.");
+ avr_init(avr);
+ avr_load_firmware(avr, &fw);
+ return avr;
+}
+
+int tests_run_test(avr_t *avr, unsigned long run_usec) {
+ if (!avr)
+ fail("Internal test error: avr == NULL in run_test()");
+ // register a cycle timer to fire after 100 seconds (simulation time);
+ // assert that the simulation has not finished before that.
+ jmp_buf jmp;
+ special_deinit_jmpbuf = &jmp;
+ avr->special_deinit = special_deinit_longjmp_cb;
+ avr_cycle_timer_register_usec(avr, run_usec,
+ cycle_timer_longjmp_cb, &jmp);
+ int reason = setjmp(jmp);
+ tests_cycle_count = avr->cycle;
+ if (reason == 0) {
+ // setjmp() returned directly, run avr
+ while (1)
+ my_avr_run(avr);
+ } else if (reason == 1) {
+ // returned from longjmp(); cycle timer fired
+ return reason;
+ } else if (reason == 2) {
+ // returned from special deinit, avr stopped
+ return reason;
+ }
+ fail("Error in test case: Should never reach this.");
+ return 0;
+}
+
+int tests_init_and_run_test(const char *elfname, unsigned long run_usec) {
+ avr_t *avr = tests_init_avr(elfname);
+ return tests_run_test(avr, run_usec);
+}
+
+struct output_buffer {
+ char *str;
+ int currlen;
+ int alloclen;
+ int maxlen;
+};
+
+/* static void buf_output_cb(avr_t *avr, avr_io_addr_t addr, uint8_t v, */
+/* void *param) { */
+static void buf_output_cb(struct avr_irq_t *irq, uint32_t value, void *param) {
+ struct output_buffer *buf = param;
+ if (!buf)
+ fail("Internal error: buf == NULL in buf_output_cb()");
+ if (buf->currlen > buf->alloclen-1)
+ fail("Internal error");
+ if (buf->alloclen == 0)
+ fail("Internal error");
+ if (buf->currlen == buf->alloclen-1) {
+ buf->alloclen *= 2;
+ buf->str = realloc(buf->str, buf->alloclen);
+ }
+ buf->str[buf->currlen++] = value;
+ buf->str[buf->currlen] = 0;
+}
+
+static void init_output_buffer(struct output_buffer *buf) {
+ buf->str = malloc(128);
+ buf->str[0] = 0;
+ buf->currlen = 0;
+ buf->alloclen = 128;
+ buf->maxlen = 4096;
+}
+
+void tests_assert_uart_receive(const char *elfname,
+ unsigned long run_usec,
+ const char *expected,
+ char uart) {
+ avr_t *avr = tests_init_avr(elfname);
+ struct output_buffer buf;
+ init_output_buffer(&buf);
+
+ avr_irq_register_notify(avr_io_getirq(avr, AVR_IOCTL_UART_GETIRQ(uart), UART_IRQ_OUTPUT),
+ buf_output_cb, &buf);
+ enum tests_finish_reason reason = tests_run_test(avr, run_usec);
+ if (reason == LJR_CYCLE_TIMER) {
+ if (strcmp(buf.str, expected) == 0) {
+ _fail(NULL, 0, "Simulation did not finish within %lu simulated usec. "
+ "UART output is correct and complete.", run_usec);
+ }
+ _fail(NULL, 0, "Simulation did not finish within %lu simulated usec. "
+ "UART output so far: \"%s\"", run_usec, buf.str);
+ }
+ if (strcmp(buf.str, expected) != 0)
+ _fail(NULL, 0, "UART outputs differ: expected \"%s\", got \"%s\"", expected, buf.str);
+}
+
+void tests_assert_cycles_at_least(unsigned long n) {
+ if (tests_cycle_count < n)
+ _fail(NULL, 0, "Program ran for too few cycles (%"
+ PRI_avr_cycle_count " < %lu)", tests_cycle_count, n);
+}
+
+void tests_assert_cycles_at_most(unsigned long n) {
+ if (tests_cycle_count > n)
+ _fail(NULL, 0, "Program ran for too many cycles (%"
+ PRI_avr_cycle_count " > %lu)", tests_cycle_count, n);
+}
+
+void tests_assert_cycles_between(unsigned long min, unsigned long max) {
+ tests_assert_cycles_at_least(min);
+ tests_assert_cycles_at_most(max);
+}
+
+void _fail(const char *filename, int linenum, const char *fmt, ...) {
+ if (orig_stderr)
+ stderr = orig_stderr;
+
+ if (filename)
+ fprintf(stderr, "%s:%d: ", filename, linenum);
+
+ fprintf(stderr, "Test ");
+ if (test_name)
+ fprintf(stderr, "%s ", test_name);
+ fprintf(stderr, "FAILED.\n");
+
+ if (filename)
+ fprintf(stderr, "%s:%d: ", filename, linenum);
+
+ va_list va;
+ va_start(va, fmt);
+ vfprintf(stderr, fmt, va);
+ putc('\n', stderr);
+
+ finished = 1;
+ _exit(1);
+}
projects / simavr / blobdiff