First commit, Vystem v0.1

shelter/lib/include/cpu/asm.h

@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: MPL-2.0
+#ifndef SH_LIB_ASM_H
+#define SH_LIB_ASM_H
+#include "std/type.h"
+#include "std/status.h"
+// inb instruction wrapper
+static inline sh_uint8 sh_asm_inb(sh_uint16 port) {
+  sh_uint8 val;
+  __asm__ volatile ("inb %1, %0":"=a"(val):"Nd"(port));
+  return val;
+}
+// outb instruction wrapper
+static inline void sh_asm_outb(sh_uint16 port,sh_uint8 val) {
+  __asm__ volatile ("outb %0, %1"::"a"(val),"Nd"(port));
+}
+// rdtsc instruction wrapper
+static inline sh_uint64 sh_asm_rdtsc() {
+  sh_uint32 lo,hi;
+  __asm__ volatile ("rdtsc":"=a"(lo),"=d"(hi));
+  return ((sh_uint64)hi<<32)|lo;
+}
+// invlpg instruction wrapper
+static inline void sh_asm_invlpg(void *addr) {
+  __asm__ volatile ("invlpg (%0)"::"r"(addr):"memory");
+}
+#endif

shelter/lib/include/cpu/serial.h

@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: MPL-2.0
+#ifndef SH_LIB_SERIAL_H
+#define SH_LIB_SERIAL_H
+#include "std/type.h"
+#include "std/status.h"
+#define SH_SERIAL_PORT_COM1 0x3F8
+// Load serial port setting
+void sh_serial_load_serial_port_setting(sh_bool is_disabled);
+// Send safely (wait for (SH_SERIAL_PORT_COM1+5) & 0x20 to be at 1) a byte
+void sh_serial_send_byte(sh_uint8 b);
+#endif

shelter/lib/include/cpu/tsc.h

@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: MPL-2.0
+#ifndef SH_LIB_TSC_H
+#define SH_LIB_TSC_H
+#include "std/type.h"
+#include "std/status.h"
+#include "cpu/asm.h"
+typedef sh_uint64 sh_tsc_TSC_VALUE;
+// Reas TSC register.
+static inline sh_tsc_TSC_VALUE sh_tsc_read_tsc() {
+  return sh_asm_rdtsc();
+}
+// Init kernel start tsc. Intended for single use only.
+SH_STATUS sh_tsc_init_tsc();
+// Return kernel start tsc.
+sh_tsc_TSC_VALUE sh_tsc_get_kernel_init_tsc();
+// Return kernel current tsc.
+sh_tsc_TSC_VALUE sh_tsc_get_kernel_current_tsc();
+#endif