diff options
| author | Emu <89668582+EmulatedSeasons@users.noreply.github.com> | 2024-05-31 23:38:46 -0400 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-05-31 23:38:46 -0400 |
| commit | 27a44e0d79d1c6e01cd832feb8ad958d5999b5e3 (patch) | |
| tree | 3759eb02fcad7a609a064080d81b7c6f9dbec4c8 /kernel/arch/x86_64/serial.cpp | |
| parent | 639240bbf498195912d8ceb6cb396b89391a5b1b (diff) | |
| parent | fd5a1699592ce0afafc42ebf22401596abcdfc28 (diff) | |
Merge pull request #1 from EmulatedSeasons/limineswitch
Limineswitch
Diffstat (limited to 'kernel/arch/x86_64/serial.cpp')
| -rw-r--r-- | kernel/arch/x86_64/serial.cpp | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/kernel/arch/x86_64/serial.cpp b/kernel/arch/x86_64/serial.cpp new file mode 100644 index 0000000..e90bcde --- /dev/null +++ b/kernel/arch/x86_64/serial.cpp @@ -0,0 +1,23 @@ +#include <io.h>
+#include <string.h>
+
+#define PORT 0x3f8
+
+int is_transmit_empty() {
+ return inb(PORT + 5) & 0x20;
+}
+
+extern "C" void serial_putchar(char c) {
+ while (is_transmit_empty() == 0);
+ outb(PORT, c);
+}
+
+void serial_write(const char* data, size_t size) {
+ for (size_t i = 0; i < size; i++) {
+ serial_putchar(data[i]);
+ }
+}
+
+void serial_writestring(const char* data) {
+ serial_write(data, strlen(data));
+}
\ No newline at end of file |