xinyangli
8e4feb4010
NJU-ProjectN/abstract-machine 3348db971fd860be5cb28e21c18f9d0e65d0c96a Merge pull request #8 from Jasonyanyusong/master
34 lines
980 B
C
34 lines
980 B
C
#ifndef RISCV_H__
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#define RISCV_H__
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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 0x01
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#define PTE_R 0x02
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#define PTE_W 0x04
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#define PTE_X 0x08
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#define PTE_U 0x10
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#define PTE_A 0x40
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#define PTE_D 0x80
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enum { MODE_U, MODE_S, MODE_M = 3 };
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#define MSTATUS_MXR (1 << 19)
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#define MSTATUS_SUM (1 << 18)
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#if __riscv_xlen == 64
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#define MSTATUS_SXL (2ull << 34)
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#define MSTATUS_UXL (2ull << 32)
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#else
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#define MSTATUS_SXL 0
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#define MSTATUS_UXL 0
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#endif
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#endif
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