Assembly Routines

include/asm.h

uint8_t inb(uint16_t port);

uint16_t inw(uint16_t port);

uint32_t inl(uint16_t port);

void insb(uint16_t port, void *addr, uint32_t count);

void insw(uint16_t port, void *addr, uint32_t count);

void insl(uint16_t port, void *addr, uint32_t count);

void outb(uint16_t port, uint8_t value);

void outw(uint16_t port, uint16_t value);

void outl(uint16_t port, uint32_t value);

void outsw(uint16_t port, void *addr, uint32_t count);

void outsb(uint16_t port, void *addr, uint32_t count);

void outsl(uint16_t port, void *addr, uint32_t count);

void mmio_write_64(void *address, uint64_t value);

void mmio_write_32(void *address, uint32_t value);

void mmio_write_16(void *address, uint16_t value);

void mmio_write_8(void *address, uint8_t value);

uint64_t mmio_read_64(void *address);

uint32_t mmio_read_32(void *address);

uint16_t mmio_read_16(void *address);

uint8_t mmio_read_8(void *address);

void write_cr8(uint64_t cr8);

uint64_t rdtsc(void);

void cpuid_count(uint32_t leaf, uint32_t subleaf, uint32_t *eax, uint32_t *ebx, uint32_t *ecx, uint32_t *edx);

uint64_t read_cr4();

void write_cr4(uint64_t cr4);

uint32_t get_core_id(void);

bool are_interrupts_enabled();

void wrmsr(uint32_t msr, uint64_t value);

uint64_t rdmsr(uint32_t msr);

void io_wait(void);

void clear_interrupts(void);

void restore_interrupts(void);

void enable_interrupts(void);

void disable_interrupts(void);

void invlpg(uint64_t virt);

uint64_t read_cr3();

void write_cr3(uint64_t cr3);

void tlb_flush();

void cpu_relax(void);

void wait_for_interrupt(void);

void hcf(void);

int clz(uint8_t a);

void memory_barrier();

#define MSR_GS_BASE 0xC0000101