86 lines
2.4 KiB
C
86 lines
2.4 KiB
C
#pragma once
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#include <stddef.h>
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#include <stdint.h>
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#include <exec/hal.h>
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static inline void X86_EnableInterrupts(void) {
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__asm__ volatile ("sti");
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}
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static inline void X86_DisableInterrupts(void) {
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__asm__ volatile ("cli");
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}
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static inline int X86_CheckInterrupts(void) {
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int eflags;
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__asm__ volatile (
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"pushf\n"
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"pop %0\n"
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: "=r"(eflags)
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);
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return !!(eflags & (1 << 9));
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}
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static inline void X86_WriteIO8(enum HalAddressSpace space, uintptr_t port, uint8_t value) {
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if (space == AS_IO) {
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__asm__ volatile ("outb %0, %1" : : "a"(value), "Nd"((uint16_t)port));
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} else {
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volatile uint8_t *ptr = (volatile uint8_t *)port;
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*ptr = value;
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}
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}
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static inline void X86_WriteIO16(enum HalAddressSpace space, uintptr_t port, uint16_t value) {
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if (space == AS_IO) {
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__asm__ volatile ("outw %0, %1" : : "a"(value), "Nd"((uint16_t)port));
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} else {
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volatile uint16_t *ptr = (volatile uint16_t *)port;
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*ptr = value;
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}
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}
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static inline void X86_WriteIO32(enum HalAddressSpace space, uintptr_t port, uint32_t value) {
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if (space == AS_IO) {
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__asm__ volatile ("outl %0, %1" : : "a"(value), "Nd"((uint16_t)port));
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} else {
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volatile uint32_t *ptr = (volatile uint32_t *)port;
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*ptr = value;
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}
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}
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static inline uint8_t X86_ReadIO8(enum HalAddressSpace space, uintptr_t port) {
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uint8_t value;
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if (space == AS_IO) {
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__asm__ volatile ("inb %1, %0" : "=a"(value) : "Nd"((uint16_t)port));
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} else {
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volatile uint8_t *ptr = (volatile uint8_t *)port;
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value = *ptr;
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}
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return value;
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}
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static inline uint16_t X86_ReadIO16(enum HalAddressSpace space, uintptr_t port) {
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uint16_t value;
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if (space == AS_IO) {
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__asm__ volatile ("inw %1, %0" : "=a"(value) : "Nd"((uint16_t)port));
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} else {
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volatile uint16_t *ptr = (volatile uint16_t *)port;
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value = *ptr;
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}
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return value;
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}
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static inline uint32_t X86_ReadIO32(enum HalAddressSpace space, uintptr_t port) {
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uint32_t value;
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if (space == AS_IO) {
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__asm__ volatile ("inl %1, %0" : "=a"(value) : "Nd"((uint16_t)port));
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} else {
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volatile uint32_t *ptr = (volatile uint32_t *)port;
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value = *ptr;
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}
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return value;
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}
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void X86_SetupTask(struct Task *task, uintptr_t initial_pc, uintptr_t final_pc);
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void IDT32_Initialize(void);
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void IDT32_SetEntry(int vector, uintptr_t handler); |