umka/umka_os.c

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C
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#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/mman.h>
#include <sys/select.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/types.h>
#include "umka.h"
#include "shell.h"
#define MONITOR_THREAD_STACK_SIZE 0x100000
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void monitor() {
__asm__ __inline__ __volatile__ (
"pushfd;"
"btr dword ptr[esp], 21;"
"popfd"
: : : "memory");
fprintf(stderr, "Start monitor thread\n");
// mkfifo("/tmp/umka.fifo.2u", 0644);
// mkfifo("/tmp/umka.fifo.4u", 0644);
FILE *fin = fopen("/tmp/umka.fifo.2u", "r");
FILE *fout = fopen("/tmp/umka.fifo.4u", "w");
if (!fin || !fout) {
fprintf(stderr, "Can't open monitor files!\n");
return;
}
run_test(fin, fout, 0);
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}
void restart_timer(void);
void umka_thread_ping(void);
void umka_thread_net_drv(void);
struct itimerval timeout = {.it_value = {.tv_sec = 0, .tv_usec = 10000},
.it_interval = {.tv_sec = 0, .tv_usec = 10000}};
int main() {
__asm__ __inline__ __volatile__ (
"pushfd;"
"btr dword ptr[esp], 21;"
"popfd"
: : : "memory");
umka_tool = UMKA_OS;
struct sigaction sa;
sa.sa_sigaction = irq0;
sigemptyset(&sa.sa_mask);
sa.sa_flags = SA_SIGINFO;
if (sigaction(SIGPROF, &sa, NULL) == -1) {
printf("Can't install signal handler!\n");
return 1;
}
/*
void *app_base = mmap((void*)0x000000, 16*0x100000, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if (app_base == MAP_FAILED) {
perror("mmap failed");
exit(1);
}
*/
printf("pid=%d, kos_lfb_base=%p\n", getpid(), (void*)kos_lfb_base);
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kos_init();
kos_stack_init();
uint8_t *monitor_stack = malloc(MONITOR_THREAD_STACK_SIZE);
umka_new_sys_threads(0, monitor, monitor_stack + MONITOR_THREAD_STACK_SIZE);
uint8_t *net_drv_stack = malloc(MONITOR_THREAD_STACK_SIZE);
umka_new_sys_threads(0, umka_thread_net_drv, net_drv_stack + MONITOR_THREAD_STACK_SIZE);
uint8_t *ping_stack = malloc(MONITOR_THREAD_STACK_SIZE);
umka_new_sys_threads(0, umka_thread_ping, ping_stack + MONITOR_THREAD_STACK_SIZE);
setitimer(ITIMER_PROF, &timeout, NULL);
osloop(); // doesn't return
return 0;
}