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#include <stdint.h>
#include <stddef.h>
#include <stdarg.h>
#include <uchar.h>
#define PAGE_SIZE 4096
#define nelem(arr) (sizeof(arr)/sizeof(*(arr)))
struct framebuffer
{
void *addr;
uint64_t width;
uint64_t height;
uint64_t pitch;
};
struct memmap
{
uintptr_t start;
uint64_t size;
};
struct ioapic_info
{
uint32_t base;
uint32_t interrupt_base;
};
struct boot_info
{
struct framebuffer framebuffer;
struct ioapic_info ioapic;
uint64_t memmap_count;
struct memmap *memmaps;
uint64_t physbase;
uint64_t rsdp;
};
struct cpu_regs
{
/* Keep this in sync with dump_regs in nasty.S */
uint64_t rax;
uint64_t rbx;
uint64_t rcx;
uint64_t rdx;
uint64_t rsi;
uint64_t rdi;
uint64_t rsp;
uint64_t rbp;
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 rip;
uint64_t rflags;
uint64_t cr0;
uint64_t cr2;
uint64_t cr3;
uint64_t cr4;
uint64_t cr8;
uint16_t cs;
uint16_t ds;
uint16_t ss;
uint16_t es;
uint16_t fs;
uint16_t gs;
};
struct ioapic_redirection
{
uint8_t vector;
uint8_t delivery_mode;
uint8_t destination_mode;
uint8_t delivery_status;
uint8_t pin_polarity;
uint8_t remote_irr;
uint8_t trigger_mode;
uint8_t mask;
uint8_t destination;
uint64_t reserved;
};
/* acpi.c */
void setup_acpi(uint64_t, struct ioapic_info *);
/* apic.c */
void setup_apic(struct ioapic_info *);
void apic_end_of_interrupt(void);
struct ioapic_redirection read_redirection(uint8_t);
void write_redirection(uint8_t, struct ioapic_redirection);
/* boot.c */
uint64_t cpu_count(void);
uint8_t boot_apic_id(void);
/* descriptors */
void setup_descriptors(void);
/* error.c */
void assert(bool);
/* font.c */
void font_init(void);
void font_draw(char8_t *, uint32_t, uint32_t, uint32_t, uint32_t);
/* keyboard.c */
void setup_keyboard(void);
bool keyboard_interrupt_handler(uint32_t);
/* main.c */
void main(struct boot_info *);
/* nasty.S */
struct table_reg;
[[noreturn]] void halt(void);
void disable_interrupts(void);
void enable_interrupts(void);
void set_gdt(struct table_reg *, uint64_t, uint64_t, uint64_t);
void set_idt(struct table_reg *);
uint64_t get_cr2(void);
uint64_t get_cr3(void);
extern void (*isr_stubs[33])(void);
void dump_regs(struct cpu_regs *);
uint64_t get_msr(uint32_t);
uint8_t in_uint8(uint8_t);
/* paging.c */
void setup_paging(struct boot_info *);
bool page_fault_handler(uint32_t);
uint64_t map_page(uint64_t, uint64_t, bool);
/* panic.c */
[[noreturn]] void panic(void);
/* screen.c */
void screen_init(struct framebuffer *);
void screen_draw_pixel(uint32_t, uint32_t, uint32_t);
void print(char8_t *, ...);
/* utf8.c */
int utf8_char_length(const char8_t *);
int utf8_cmp_n(const char8_t *, const char8_t *, uint64_t);
uint32_t utf8_value(const char8_t *);
/* util.c */
uint16_t read_uint16_le(const uint8_t *);
uint16_t read_uint16_be(const uint8_t *);
uint32_t read_uint32_le(const uint8_t *);
void write_uint16_le(uint8_t *, uint16_t);
void write_uint32_le(uint8_t *, uint32_t);
void write_uint64_le(uint8_t *, uint64_t);
int memcmp(const void *, const void *, size_t);
void memset(void *, uint8_t, size_t);
void memcpy(void *, void *, size_t);
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