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30 lines
757 B
C
30 lines
757 B
C
#ifndef COMMON_AARCH64_H
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#define COMMON_AARCH64_H
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#include <inttypes.h>
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#define SYSREG_READ(type, name) \
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type sysreg_ ## name ## _read(void) { \
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type name; \
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__asm__ __volatile__("mrs %0, " #name : "=r" (name) : : ); \
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return name; \
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}
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#define SYSREG_WRITE(type, name) \
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void sysreg_ ## name ## _write(type name) { \
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__asm__ __volatile__("msr " #name ", %0" : : "r" (name) : ); \
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}
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#define SYSREG_READ_WRITE(name, type) \
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SYSREG_READ(name, type) \
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SYSREG_WRITE(name, type)
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SYSREG_READ_WRITE(uint32_t, daif)
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SYSREG_READ_WRITE(uint32_t, spsel)
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SYSREG_READ_WRITE(uint64_t, sp_el1)
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SYSREG_READ_WRITE(uint64_t, vbar_el1)
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#define SVC(immediate) __asm__ __volatile__("svc " #immediate : : : )
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#endif
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