74 lines
1.6 KiB
C
74 lines
1.6 KiB
C
#include <gint/timer.h>
|
|
#include <gint/clock.h>
|
|
#include <gint/mpu/tmu.h>
|
|
#include <gint/std/stdlib.h>
|
|
#include <gint/hardware.h>
|
|
|
|
#include <libprof.h>
|
|
|
|
/* Recursion depth of each function currently being executed */
|
|
uint8_t *prof_rec = NULL;
|
|
/* Time that has elapsed within each function; the value for a given function
|
|
is only relevant when it is not executing, due to optimizations */
|
|
uint32_t *prof_elapsed = NULL;
|
|
/* Timer counter */
|
|
uint32_t volatile *prof_tcnt = NULL;
|
|
/* Timer ID */
|
|
static int prof_timer;
|
|
|
|
/* prof_init(): Initialize the profiler's data and timer */
|
|
int prof_init(int n, int timer)
|
|
{
|
|
if((unsigned)timer >= 3) return 1;
|
|
|
|
prof_rec = malloc(n * sizeof *prof_rec);
|
|
prof_elapsed = malloc(n * sizeof *prof_elapsed);
|
|
|
|
int status = timer_setup(timer, 0xffffffff, timer_Po_4, NULL, NULL);
|
|
|
|
if(!prof_rec || !prof_elapsed || status < 0)
|
|
{
|
|
prof_quit();
|
|
return 1;
|
|
}
|
|
|
|
/* Fix the configuration done by gint by disabling the interrupt */
|
|
if(isSH3())
|
|
{
|
|
SH7705_TMU.TMU[timer].TCR.UNIE = 0;
|
|
prof_tcnt = &SH7705_TMU.TMU[timer].TCNT;
|
|
}
|
|
else
|
|
{
|
|
SH7305_TMU.TMU[timer].TCR.UNIE = 0;
|
|
prof_tcnt = &SH7305_TMU.TMU[timer].TCNT;
|
|
}
|
|
|
|
timer_start(timer);
|
|
prof_timer = timer;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* prof_quit(): Free the profiler's data and timer */
|
|
void prof_quit(void)
|
|
{
|
|
timer_stop(prof_timer);
|
|
|
|
free(prof_rec);
|
|
free(prof_time);
|
|
}
|
|
|
|
//---
|
|
// Post-measurement analysis
|
|
//---
|
|
|
|
/* prof_time(): Time spent in a given context, in microseconds */
|
|
uint32_t prof_time(int ctx)
|
|
{
|
|
int Pphi = clock_freq()->Pphi_f;
|
|
uint64_t time = prof_elapsed[ctx];
|
|
|
|
return (time * 4 * 1000000) / Pphi;
|
|
}
|