Karina
caf2d2b4a8
- fix(gs): was a nightmare. now its solved. Both MSR_GS_BASE and MSR_KERNEL_GS_BASE are now initialized to , preventing null GS_BASE when interrupt occurs during the first kernel task run - chore(syscall.asm): stability improvements. User RSP is now saved via kernel stack instead of global g_cpu, preventing stack theft when task switch occurs during a syscall - feat(interrupts): all irq and isr handlers now conditionally perform swapgs based on the CS selector (checkin if comfing from ring 3) - upgrade(scheduler): big update: 1) added TASK_BLOCKED state from process sync; 2) syncronized PID and Task ID to fix wakeup logic; 3) implemented sched_block and sched_exit() for proper wait/exit syscalls
115 lines
3.3 KiB
C
115 lines
3.3 KiB
C
// SPDX-License-Identifier: GPL-3.0-or-later
|
|
// Copyright (c) 2025 0xKarinyash
|
|
|
|
#include <drivers/keyboard.h>
|
|
#include <drivers/console.h>
|
|
|
|
#include <io.h>
|
|
#include <types.h>
|
|
|
|
unsigned char keyboard_map[128] = {
|
|
0, 27, '1', '2', '3', '4', '5', '6', '7', '8', /* 0x00 - 0x09 */
|
|
'9', '0', '-', '=', '\b', /* Backspace */
|
|
'\t', /* Tab */
|
|
'q', 'w', 'e', 'r', /* 0x10 - 0x13 */
|
|
't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\n', /* Enter key */
|
|
0, /* 0x1D - Control */
|
|
'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', /* 0x1E - 0x27 */
|
|
'\'', '`', 0, /* Left shift */
|
|
'\\', 'z', 'x', 'c', 'v', 'b', 'n', /* 0x2C - 0x32 */
|
|
'm', ',', '.', '/', 0, /* Right shift */
|
|
'*',
|
|
0, /* Alt */
|
|
' ', /* Space bar */
|
|
0, /* Caps lock */
|
|
0, /* 0x3B - F1 key ... > */
|
|
0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, /* < ... F10 */
|
|
0, /* 0x45 - Num lock*/
|
|
0, /* Scroll Lock */
|
|
0, /* Home key */
|
|
0, /* Up Arrow */
|
|
0, /* Page Up */
|
|
'-',
|
|
0, /* Left Arrow */
|
|
0,
|
|
0, /* Right Arrow */
|
|
'+',
|
|
0, /* 0x4F - End key*/
|
|
0, /* Down Arrow */
|
|
0, /* Page Down */
|
|
0, /* Insert Key */
|
|
0, /* Delete Key */
|
|
0, 0, 0,
|
|
0, /* F11 Key */
|
|
0, /* F12 Key */
|
|
0, /* All other keys are undefined */
|
|
};
|
|
|
|
unsigned char keyboard_map_shifted[128] = {
|
|
0, 27, '!', '@', '#', '$', '%', '^', '&', '*', /* 0x00 - 0x09 */
|
|
'(', ')', '_', '+', '\b', /* Backspace */
|
|
'\t', /* Tab */
|
|
'Q', 'W', 'E', 'R', /* 0x10 - 0x13 */
|
|
'T', 'Y', 'U', 'I', 'O', 'P', '{', '}', '\n', /* Enter key */
|
|
0, /* 0x1D - Control */
|
|
'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', /* 0x1E - 0x27 */
|
|
'"', '~', 0, /* Left shift (0x2A) */
|
|
'|', 'Z', 'X', 'C', 'V', 'B', 'N', /* 0x2C - 0x32 */
|
|
'M', '<', '>', '?', 0, /* Right shift (0x36) */
|
|
'*',
|
|
0, /* Alt */
|
|
' ', /* Space bar */
|
|
0, /* Caps lock */
|
|
0, /* 0x3B - F1 key ... > */
|
|
0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, /* < ... F10 */
|
|
0, /* 0x45 - Num lock*/
|
|
0, /* Scroll Lock */
|
|
0, /* Home key */
|
|
0, /* Up Arrow */
|
|
0, /* Page Up */
|
|
'-',
|
|
0, /* Left Arrow */
|
|
0,
|
|
0, /* Right Arrow */
|
|
'+',
|
|
0, /* 0x4F - End key*/
|
|
0, /* Down Arrow */
|
|
0, /* Page Down */
|
|
0, /* Insert Key */
|
|
0, /* Delete Key */
|
|
0, 0, 0,
|
|
0, /* F11 Key */
|
|
0, /* F12 Key */
|
|
0, /* All other keys */
|
|
};
|
|
|
|
bool shift_pressed = false;
|
|
kb_buffer kb_buf = {0};
|
|
|
|
void kb_handler() {
|
|
u16 next_head = (kb_buf.head + 1) % KB_BUFF_SIZE;
|
|
|
|
u8 scancode = inb(0x60);
|
|
// make code 0x00 - 0x7F; break code = make code + 0x80
|
|
if (scancode < 0x80) {
|
|
unsigned char* arr = shift_pressed ? keyboard_map_shifted : keyboard_map;
|
|
char ascii = arr[scancode];
|
|
if (ascii && next_head != kb_buf.tail) {
|
|
kb_buf.buffer[kb_buf.head] = ascii;
|
|
kb_buf.head = next_head;
|
|
} else {
|
|
switch (scancode) {
|
|
case 0x2A: shift_pressed = true; break;
|
|
default: break;
|
|
}
|
|
}
|
|
} else {
|
|
switch (scancode) {
|
|
case 0xAA: shift_pressed = false; break;
|
|
default: break;
|
|
}
|
|
}
|
|
}
|