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#include <hilbert/kernel/framebuffer.hpp>
#include <hilbert/kernel/serial.hpp>
#include <hilbert/kernel/input.hpp>
#include <hilbert/kernel/panic.hpp>
using namespace hilbert::kernel;
struct [[gnu::packed]] exception_info_t {
uint64_t rax;
uint64_t rbx;
uint64_t rcx;
uint64_t rdx;
uint64_t rdi;
uint64_t rsi;
uint64_t rbp;
uint64_t rsp;
uint64_t r8;
uint64_t r9;
uint64_t r10;
uint64_t r11;
uint64_t r12;
uint64_t r13;
uint64_t r14;
uint64_t r15;
uint64_t cr2;
uint64_t cr3;
uint64_t rip;
uint64_t rflags;
uint64_t error;
uint8_t has_error;//0 or 1
uint8_t exception_number;
};
extern exception_info_t exception_info;
static inline void print_reg(const char *regname, uint64_t value) {
serial_putstr(" ");
serial_putstr(regname);
serial_putstr(" = 0x");
serial_puthex<16>(value);
serial_putchar('\n');
}
extern "C" [[noreturn]] void print_exception() {
//so exception_info's type is known by gdb
exception_info_t the_exception_info = exception_info;
(void)the_exception_info;
serial_putstr("exception 0x");
serial_puthex<2>(exception_info.exception_number);
serial_putchar('\n');
if (exception_info.has_error)
print_reg("error code", exception_info.error);
print_reg("rflags", exception_info.rflags);
print_reg("rip", exception_info.rip);
print_reg("cr2", exception_info.cr2);
print_reg("cr3", exception_info.cr3);
print_reg("rax", exception_info.rax);
print_reg("rbx", exception_info.rbx);
print_reg("rcx", exception_info.rcx);
print_reg("rdx", exception_info.rdx);
print_reg("rdi", exception_info.rdi);
print_reg("rsi", exception_info.rsi);
print_reg("rbp", exception_info.rbp);
print_reg("rsp", exception_info.rsp);
print_reg("r8 ", exception_info.r8 );
print_reg("r9 ", exception_info.r9 );
print_reg("r10", exception_info.r10);
print_reg("r11", exception_info.r11);
print_reg("r12", exception_info.r12);
print_reg("r13", exception_info.r13);
print_reg("r14", exception_info.r14);
print_reg("r15", exception_info.r15);
panic(0xba40bb);
}
static uint32_t current_flags = 0;
#define SETBIT(field, bit, cond) \
field = (cond) ? (field | (bit)) : (field & ~(bit));
static void got_key(uint32_t key) {
input::input_queue->insert({
.keyboard = current_flags | key, .is_mouse = false});
input::notify_waiting();
if (key == (input::BREAK | 0x77))
current_flags ^= input::NUM_LOCK;
else if (key == (input::BREAK | 0x58))
current_flags ^= input::CAPS_LOCK;
else if ((key & 0xff) == 0xa7)
SETBIT(current_flags, input::RIGHT_WIN, !(key & input::BREAK))
else if ((key & 0xff) == 0x9f)
SETBIT(current_flags, input::LEFT_WIN, !(key & input::BREAK))
else if ((key & 0xff) == 0x91)
SETBIT(current_flags, input::RIGHT_ALT, !(key & input::BREAK))
else if ((key & 0xff) == 0x11)
SETBIT(current_flags, input::LEFT_ALT, !(key & input::BREAK))
else if ((key & 0xff) == 0x94)
SETBIT(current_flags, input::RIGHT_CTRL, !(key & input::BREAK))
else if ((key & 0xff) == 0x14)
SETBIT(current_flags, input::LEFT_CTRL, !(key & input::BREAK))
else if ((key & 0xff) == 0x59)
SETBIT(current_flags, input::RIGHT_SHIFT, !(key & input::BREAK))
else if ((key & 0xff) == 0x12)
SETBIT(current_flags, input::LEFT_SHIFT, !(key & input::BREAK))
}
static uint8_t key_so_far[8];
static uint8_t key_so_far_len = 0;
extern "C" void on_keyboard_interrupt(uint8_t byte) {
key_so_far[key_so_far_len++] = byte;
if (key_so_far_len == 1) {
if (byte != 0xe0 && byte != 0xe1 && byte != 0xf0) {
got_key(byte);
key_so_far_len = 0;
}
}
else if (key_so_far_len == 2) {
if (key_so_far[0] == 0xe0 && byte != 0xf0 && byte != 0x12) {
got_key(byte | 0x80);
key_so_far_len = 0;
}
else if (key_so_far[0] == 0xf0) {
got_key(input::BREAK | byte);
key_so_far_len = 0;
}
}
else if (key_so_far_len == 3) {
if (key_so_far[0] == 0xe0 && key_so_far[1] == 0xf0 && byte != 0x7c) {
got_key(input::BREAK | byte | 0x80);
key_so_far_len = 0;
}
}
else if (key_so_far_len == 4) {
if (key_so_far[0] == 0xe0 && key_so_far[1] == 0x12 &&
key_so_far[2] == 0xe0 && byte == 0x7c) {
got_key(0xe0);
key_so_far_len = 0;
}
}
else if (key_so_far_len == 6) {
if (key_so_far[0] == 0xe0 && key_so_far[1] == 0xf0 &&
key_so_far[2] == 0x7c && key_so_far[3] == 0xe0 &&
key_so_far[4] == 0xf0 && byte == 0x12) {
got_key(input::BREAK | 0xe0);
key_so_far_len = 0;
}
}
else if (key_so_far_len == 8) {
if (key_so_far[0] == 0xe1 && key_so_far[1] == 0x14 &&
key_so_far[2] == 0x77 && key_so_far[3] == 0xe1 &&
key_so_far[2] == 0xf0 && key_so_far[3] == 0x14 &&
key_so_far[4] == 0xf0 && byte == 0x77) {
got_key(0xe1);
got_key(input::BREAK | 0xe1);
}
key_so_far_len = 0;
}
}
static uint8_t mouse_packet_so_far[3];
static uint8_t mouse_packet_so_far_len = 0;
extern "C" void on_mouse_interrupt(uint8_t byte) {
if (mouse_packet_so_far_len == 0 && byte == 0xfa)
//dirty hack
return;
mouse_packet_so_far[mouse_packet_so_far_len++] = byte;
if (mouse_packet_so_far_len < 3)
return;
mouse_packet_so_far_len = 0;
int16_t x_change = mouse_packet_so_far[1];
int16_t y_change = -(int16_t)mouse_packet_so_far[2];
if (mouse_packet_so_far[0] & 0x10)
x_change -= 0x100;
if (mouse_packet_so_far[0] & 0x20)
y_change += 0x100;
input::input_packet packet = {
.mouse = {
.x_change = x_change, .y_change = y_change,
.buttons = (input::buttons_t)(mouse_packet_so_far[0] & 7) },
.is_mouse = true };
if (input::input_queue->count > 0 &&
input::input_queue->last_inserted().is_mouse &&
input::input_queue->last_inserted().mouse.buttons ==
packet.mouse.buttons) {
input::input_queue->last_inserted().mouse.x_change +=
packet.mouse.x_change;
input::input_queue->last_inserted().mouse.y_change +=
packet.mouse.y_change;
}
else
input::input_queue->insert(packet);
input::notify_waiting();
}
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