38 lines
1.1 KiB
C
38 lines
1.1 KiB
C
#ifndef _HAZARD3_CSR_H
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#define _HAZARD3_CSR_H
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#ifndef __ASSEMBLER__
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#include "stdint.h"
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#endif
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#define hazard3_csr_dmdata0 0xbff // Debug-mode shadow CSR for DM data transfer
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#define hazard3_csr_meie0 0xbe0 // External interrupt enable IRQ0 -> 31
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#define hazard3_csr_meip0 0xfe0 // External interrupt pending IRQ0 -> 31
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#define hazard3_csr_mlei 0xfe4 // Lowest external interrupt (pending & enabled)
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#define _read_csr(csrname) ({ \
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uint32_t __csr_tmp_u32; \
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asm volatile ("csrr %0, " #csrname : "=r" (__csr_tmp_u32)); \
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__csr_tmp_u32; \
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})
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#define _write_csr(csrname, data) ({ \
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asm volatile ("csrw " #csrname ", %0" : : "r" (data)); \
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})
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#define _set_csr(csrname, data) ({ \
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asm volatile ("csrs " #csrname ", %0" : : "r" (data)); \
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})
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#define _clear_csr(csrname, data) ({ \
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asm volatile ("csrc " #csrname ", %0" : : "r" (data)); \
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})
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// Argument macro expansion layer
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#define read_csr(csrname) _read_csr(csrname)
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#define write_csr(csrname, data) _write_csr(csrname, data)
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#define set_csr(csrname, data) _set_csr(csrname, data)
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#define clear_csr(csrname, data) _clear_csr(csrname, data)
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#endif
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