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#include "../cpu/irq.h"
#include "../drivers/uart.h"
#include "../graphics/drawer.h"
#include "../sys/core.h"
#include "../sys/timer.h"
#include "../util/mutex.h"
#include "../util/time.h"
extern unsigned long cmdidx;
extern char cmd[2048];
void c_irq_handler(void)
{
disableirq();
unsigned long source = load32(CORE0_IRQ_SOURCE);
if (source & (1 << 8)) {
if(load32(IRQ_PENDING2) & (1 << 25)) {
if(load32(UART0_MIS) & (1<<4)) {
unsigned long data = load32(UART0_DR);
// Ctrl+Tab to toggle timer
if(data == 0x14) {
unsigned long timer_status;
asm volatile("mrc p15, 0, %0, c14, c3, 1" : "=r"(timer_status));
unsigned int x = g_Drawer.x;
unsigned int y = g_Drawer.y;
g_Drawer.x = 0;
g_Drawer.y = 5;
write_string(&g_Drawer, "TIMER: ");
if(timer_status == 0) {
cntfrq = read_cntfrq();
write_cntv_tval(cntfrq);
enablecntv();
write_cstring(&g_Drawer, "Enabled ", 0x00FF00);
} else {
disablecntv();
write_cstring(&g_Drawer, "Disabled", 0xFF0000);
}
g_Drawer.x = x;
g_Drawer.y = y;
} else {
unsigned long off = cmdidx;
if (off < 2048) {
// Newline Case
if (data == 0x0D) {
for(int i = off; i>=0;i--)
cmd[i] = 0x0;
off = 0;
// Backspace Case
} else if (data == 0x08 || data == 0x7F) {
if (off > 0) {
off -= 1;
}
cmd[off] = 0x0;
// Lock Case
} else if (data == 0x6C) {
cmd[off] = (char) data;
off += 1;
lock_mutex(&exe_cnt_m, SYS_PID);
// Release Case
} else if (data == 0x72) {
cmd[off] = (char) data;
off += 1;
release_mutex(&exe_cnt_m, SYS_PID);
// Else output
} else {
cmd[off] = (char) data;
off += 1;
}
} else if (off == 2048) {
if (data == 0x0D) {
for(int i = off; i>=0;i--)
cmd[i] = 0x0;
off = 0;
} else if (data == 0x08 || data == 0x7F) {
if (off > 0) {
off -= 1;
}
cmd[off] = 0x0;
}
}
cmdidx = off;
}
g_Drawer.x = 0;
g_Drawer.y = 7;
for(int i = 0; i < 128; i++)
write_char(&g_Drawer, ' ');
g_Drawer.x = 0;
g_Drawer.y = 7;
write_string(&g_Drawer, "> ");
write_string(&g_Drawer, cmd);
enableirq();
return;
}
}
} else if (source & (1 << 3)) {
c_timer();
enableirq();
return;
}
return;
}
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