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-rw-r--r--kernel/interrupts.cpp230
1 files changed, 0 insertions, 230 deletions
diff --git a/kernel/interrupts.cpp b/kernel/interrupts.cpp
deleted file mode 100644
index cd57c4f..0000000
--- a/kernel/interrupts.cpp
+++ /dev/null
@@ -1,230 +0,0 @@
-#include <hilbert/kernel/terminal.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 const char *exception_types[] = {
- "division error",
- "",
- "non-maskable interrupt",
- "",
- "",
- "",
- "invalid opcode",
- "",
- "double fault (uh oh)",
- "",
- "",
- "",
- "stack fault",
- "general protection fault",
- "page fault",
- ""
-};
-
-static const char *flag_names[] = {
- " cf",
- "",
- " pf",
- "",
- " af",
- "",
- " zf",
- " sf",
- " tf",
- " if",
- " df",
- " of",
- "",
- "",
- " nt",
- " md"
-};
-
-static void print_line(const char *r1, const char *r2, uint64_t r1v, uint64_t r2v) {
- terminal::put_string_sz("\n ");
- terminal::put_string_sz(r1);
- terminal::put_string_sz(": 0x");
- terminal::put_int_hex(r1v, 16);
- terminal::put_string_sz(" ");
- terminal::put_string_sz(r2);
- terminal::put_string_sz(": 0x");
- terminal::put_int_hex(r2v, 16);
-}
-
-extern "C" [[noreturn]] void print_exception() {
-
- terminal::put_string_sz("exception handler:\n type: ");
- terminal::put_string_sz(exception_types[exception_info.exception_number]);
- terminal::put_string_sz(" (0x");
- terminal::put_int_hex(exception_info.exception_number, 2);
- terminal::put_char(')');
-
- if (exception_info.has_error == 1) {
- terminal::put_string_sz("\n error code: 0x");
- terminal::put_int_hex(exception_info.error, 16);
- }
-
- terminal::put_string_sz("\n flags:");
- if (exception_info.rflags == 0)
- terminal::put_string_sz(" [none]");
- else
- for (int i = 0; i < 16; ++i)
- if (((exception_info.rflags >> i) & 1) == 1)
- terminal::put_string_sz(flag_names[i]);
-
- if (exception_info.exception_number == 0x0e) {
- terminal::put_string_sz("\n cr2: 0x");
- terminal::put_int_hex(exception_info.cr2, 16);
- }
-
- print_line("cr3", "rip", exception_info.cr3, exception_info.rip);
- print_line("rax", "rbx", exception_info.rax, exception_info.rbx);
- print_line("rcx", "rdx", exception_info.rcx, exception_info.rdx);
- print_line("rdi", "rsi", exception_info.rdi, exception_info.rsi);
- print_line("rbp", "rsp", exception_info.rbp, exception_info.rsp);
- print_line("r8 ", "r9 ", exception_info.r8 , exception_info.r9 );
- print_line("r10", "r11", exception_info.r10, exception_info.r11);
- print_line("r12", "r13", exception_info.r12, exception_info.r13);
- print_line("r14", "r15", exception_info.r14, exception_info.r15);
-
- while (1)
- asm ("hlt");
-
-}
-
-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::key_queue->insert(current_flags | key);
-
- 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];
-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;
- }
-
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-24 15:48:35 +0000