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#ifndef I386_ASM_H
#define I386_ASM_H
#include <kernel/gdt.h>
#include <stdint.h>
extern uintptr_t _kernel_start;
extern uintptr_t _kernel_end;
#define KSTART ((uintptr_t)&_kernel_start)
#define KEND ((uintptr_t)&_kernel_end - 0xC0000000)
#define PAGE_SIZE 4096
#define PCI_CONFIG_ADDR 0xCF8
#define PCI_CONFIG_DATA 0xCFC
#define COM_PORT 0x3F8
struct regs {
uint32_t eax;
uint32_t ebx;
uint32_t ecx;
uint32_t edx;
uint32_t esi;
uint32_t edi;
uint32_t ebp;
uint32_t esp;
uint32_t cr0;
uint32_t cr2;
uint32_t cr3;
uint32_t cr4;
};
struct isr_frame {
uint32_t cr4;
uint32_t cr3;
uint32_t cr2;
uint32_t cr0;
uint32_t edi;
uint32_t esi;
uint32_t edx;
uint32_t ecx;
uint32_t ebx;
uint32_t eax;
uint32_t isr_vector;
uint32_t isr_err;
uint32_t eip;
uint32_t cs;
uint32_t eflags;
} __attribute__((packed));
void isr_stub_0(void);
void isr_stub_1(void);
void isr_stub_2(void);
void isr_stub_3(void);
void isr_stub_4(void);
void isr_stub_5(void);
void isr_stub_6(void);
void isr_stub_7(void);
void isr_stub_8(void);
void isr_stub_9(void);
void isr_stub_10(void);
void isr_stub_11(void);
void isr_stub_12(void);
void isr_stub_13(void);
void isr_stub_14(void);
void isr_stub_15(void);
void isr_stub_16(void);
void isr_stub_17(void);
void isr_stub_18(void);
void isr_stub_19(void);
void isr_stub_20(void);
void isr_stub_21(void);
void isr_stub_22(void);
void isr_stub_23(void);
void isr_stub_24(void);
void isr_stub_25(void);
void isr_stub_26(void);
void isr_stub_27(void);
void isr_stub_28(void);
void isr_stub_29(void);
void isr_stub_30(void);
void isr_stub_31(void);
void irq_stub_0(void);
void irq_stub_1(void);
void irq_stub_2(void);
void irq_stub_3(void);
void irq_stub_4(void);
void irq_stub_5(void);
void irq_stub_6(void);
void irq_stub_7(void);
void irq_stub_8(void);
void irq_stub_9(void);
void irq_stub_10(void);
void irq_stub_11(void);
void irq_stub_12(void);
void irq_stub_13(void);
void irq_stub_14(void);
void irq_stub_15(void);
void syscall_stub(void);
void aquire_lock(int *lock);
void release_lock(int *lock);
void enable_paging(uint32_t new_cr3);
static inline void outb(uint16_t port, uint8_t value) {
__asm__ volatile("outb %0, %1" : : "a"(value), "Nd"(port));
}
static inline void outw(uint16_t port, uint16_t value) {
__asm__ volatile("outw %0, %1" : : "a"(value), "Nd"(port));
}
static inline void outl(uint16_t port, uint32_t value) {
__asm__ volatile("outl %0, %1" : : "a"(value), "Nd"(port));
}
static inline uint8_t inb(uint16_t port) {
uint8_t ret;
__asm__ volatile("inb %1, %0" : "=a"(ret) : "Nd"(port));
return ret;
}
static inline uint16_t inw(uint16_t port) {
uint16_t ret;
__asm__ volatile("inw %1, %0" : "=a"(ret) : "Nd"(port));
return ret;
}
static inline uint32_t inl(uint16_t port) {
uint32_t ret;
__asm__ volatile("inl %1, %0" : "=a"(ret) : "Nd"(port));
return ret;
}
static inline void enable_ints(void) {
__asm__ volatile("sti");
}
static inline void disable_ints(void) {
__asm__ volatile("cli");
}
static inline void flush_tss(void) {
__asm__ volatile("movw $0x28, %ax; ltr %ax");
}
static inline void invlpg(void *addr) {
__asm__ volatile("invlpg (%0)" : : "b"(addr) : "memory");
}
#endif
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