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This commit is contained in:
Chiharu Shirasaka
2021-04-09 18:13:55 +09:00
parent d6b01a0ac5
commit 1b4d5fb6a4
30 changed files with 569 additions and 55 deletions
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30
io.c Normal file → Executable file
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@@ -8,3 +8,33 @@ UINT8 mapped_io_read(UINT16 addr) {
void mapped_io_write(UINT16 addr, UINT8 data) {
asm volatile("outb %0,%1" ::"a"(data), "d"(addr));
}
UINT16 mapped_io_read_word(UINT16 addr) {
UINT16 data;
asm volatile("inw %1,%0" : "=a"(data) : "d"(addr));
return data;
}
void mapped_io_write_word(UINT16 addr, UINT16 data) {
asm volatile("outw %0,%1" ::"a"(data), "d"(addr));
}
UINT32 mapped_io_read_dword(UINT16 addr) {
UINT32 data;
asm volatile("inl %1,%0" : "=a"(data) : "d"(addr));
return data;
}
void mapped_io_write_dword(UINT16 addr, UINT32 data) {
asm volatile("outl %0,%1" ::"a"(data), "d"(addr));
}
UINT64 mapped_io_read_qword(UINT16 addr) {
UINT64 data;
asm volatile("inq %1,%0" : "=a"(data) : "d"(addr));
return data;
}
void mapped_io_write_qword(UINT16 addr, UINT64 data) {
asm volatile("outq %0,%1" ::"a"(data), "d"(addr));
}