27 lines
754 B
C
27 lines
754 B
C
// SPDX-License-Identifier: MPL-2.0
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#ifndef SH_LIB_ASM_H
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#define SH_LIB_ASM_H
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#include "std/type.h"
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#include "std/status.h"
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// inb instruction wrapper
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static inline sh_uint8 sh_asm_inb(sh_uint16 port) {
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sh_uint8 val;
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__asm__ volatile ("inb %1, %0":"=a"(val):"Nd"(port));
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return val;
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}
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// outb instruction wrapper
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static inline void sh_asm_outb(sh_uint16 port,sh_uint8 val) {
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__asm__ volatile ("outb %0, %1"::"a"(val),"Nd"(port));
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}
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// rdtsc instruction wrapper
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static inline sh_uint64 sh_asm_rdtsc() {
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sh_uint32 lo,hi;
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__asm__ volatile ("rdtsc":"=a"(lo),"=d"(hi));
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return ((sh_uint64)hi<<32)|lo;
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}
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// invlpg instruction wrapper
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static inline void sh_asm_invlpg(void *addr) {
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__asm__ volatile ("invlpg (%0)"::"r"(addr):"memory");
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}
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#endif
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