32 lines
1.0 KiB
C
32 lines
1.0 KiB
C
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#ifndef __MIPS_H__
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#define __MIPS_H__
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#ifndef __ASSEMBLER__
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#include <stdint.h>
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static inline uint8_t inb(uintptr_t addr) { return *(volatile uint8_t *)addr; }
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static inline uint16_t inw(uintptr_t addr) { return *(volatile uint16_t *)addr; }
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static inline uint32_t inl(uintptr_t addr) { return *(volatile uint32_t *)addr; }
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static inline void outb(uintptr_t addr, uint8_t data) { *(volatile uint8_t *)addr = data; }
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static inline void outw(uintptr_t addr, uint16_t data) { *(volatile uint16_t *)addr = data; }
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static inline void outl(uintptr_t addr, uint32_t data) { *(volatile uint32_t *)addr = data; }
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#define PTE_V 0x2
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#define PTE_D 0x4
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// Page directory and page table constants
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#define PTXSHFT 12 // Offset of PTX in a linear address
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#define PDXSHFT 22 // Offset of PDX in a linear address
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#define PDX(va) (((uint32_t)(va) >> PDXSHFT) & 0x3ff)
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#define PTX(va) (((uint32_t)(va) >> PTXSHFT) & 0x3ff)
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// Address in page table or page directory entry
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#define PTE_ADDR(pte) ((uint32_t)(pte) & ~0xfff)
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#endif
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#endif
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