The functions in the “basic_syscall.h” file have been moved to their respective categories, and a simple system call system has been created for OpenKernel. (Preliminary work for SDK development)

Author: OpenSoftware-World

Kernel/KernelServices/LogService/log.c

@@ -0,0 +1,28 @@
+#include "log.h"
+
+void log_message(const char *mode, const char *message) {
+    /*
+    S: Success
+    E: Error
+    W: Warning
+    I: Info
+    U: Unknown
+    */
+    if (mode[0] == 'S') {
+        vga_set_text_color(VGA_COLOR_GREEN);
+        vga_print_scr("[SUCCESS]: ");
+    } else if (mode[0] == 'E') {
+        vga_set_text_color(VGA_COLOR_RED);
+        vga_print_scr("[ERROR]: ");
+    } else if (mode[0] == 'W') {
+        vga_set_text_color(VGA_COLOR_LIGHT_BROWN);
+        vga_print_scr("[WARNING]: ");
+    } else if (mode[0] == 'I') {
+        vga_set_text_color(VGA_COLOR_LIGHT_BLUE);
+        vga_print_scr("[INFO]: ");
+    } else if (mode[0] == 'U') {
+        vga_set_text_color(VGA_COLOR_LIGHT_GREY);
+        vga_print_scr("[UNKNOWN]: ");
+    }
+    vga_print_scr_nw(message);
+}

Kernel/KernelServices/LogService/log.h

@@ -0,0 +1,8 @@
+#ifndef LOG_H
+#define LOG_H
+
+#include "../../../Drivers/Vga/vga.h"
+
+void log_message(const char *mode, const char *message);
+
+#endif

Kernel/KernelServices/SystemManagement/sysmng.c

@@ -16,4 +16,20 @@ void sys_next_status(const char *mode, uint32_t seconds) {
         while (inb(0x64) & 0x02);
         outb(0x64, 0xFE);
     }
+}
+
+void exit_program(const char *mode, const char *message) {
+    /*
+    D: Default
+    C: Custom
+    */
+    if (mode[0] == 'D') {
+        vga_print_scr_nw("Exiting program...");
+    } else if (mode[0] == 'C') {
+        vga_print_scr_nw(message);
+    }
+
+    while (true) {
+        __asm__ __volatile__ ("hlt");
+    }
 }

Kernel/KernelServices/SystemManagement/sysmng.h

@@ -4,7 +4,9 @@
 #include "../../../SystemLib/Std/types.h"
 #include "../../../SystemLib/SystemIO/io.h"
 #include "../../../SystemLib/TimeMng/time.h"
+#include "../../../Drivers/Vga/vga.h"
 
 void sys_next_status(const char *mode, uint32_t seconds);
+void exit_program(const char *mode, const char *message);
 
 #endif

SystemLib/SysCalls/basic_syscall.c

@@ -1,45 +1,24 @@
 #include "basic_syscall.h"
-#include "../../Drivers/Vga/vga.h"
 
-void exit_program(const char *mode, const char *message) {
-    /*
-    D: Default
-    C: Custom
-    */
-    if (mode[0] == 'D') {
-        vga_print_scr_nw("Exiting program...");
-    } else if (mode[0] == 'C') {
-        vga_print_scr_nw(message);
-    }
-
-    while (true) {
-        __asm__ __volatile__ ("hlt");
-    }
+int syscall(int id, void* arg) {
+    return syscall_handler(id, arg);
 }
 
-void log_message(const char *mode, const char *message) {
-    /*
-    S: Success
-    E: Error
-    W: Warning
-    I: Info
-    U: Unknown
-    */
-    if (mode[0] == 'S') {
-        vga_set_text_color(VGA_COLOR_GREEN);
-        vga_print_scr("[SUCCESS]: ");
-    } else if (mode[0] == 'E') {
-        vga_set_text_color(VGA_COLOR_RED);
-        vga_print_scr("[ERROR]: ");
-    } else if (mode[0] == 'W') {
-        vga_set_text_color(VGA_COLOR_LIGHT_BROWN);
-        vga_print_scr("[WARNING]: ");
-    } else if (mode[0] == 'I') {
-        vga_set_text_color(VGA_COLOR_LIGHT_BLUE);
-        vga_print_scr("[INFO]: ");
-    } else if (mode[0] == 'U') {
-        vga_set_text_color(VGA_COLOR_LIGHT_GREY);
-        vga_print_scr("[UNKNOWN]: ");
+int syscall_handler(int id, void* arg) {
+    switch(id)
+    {
+        case SYSCALL_PRINT:
+            vga_print_scr((char*)arg);
+            return 0;
+        case SYSCALL_CLEAR_SCREEN:
+            vga_clear_screen("C");
+            return 0;
+        case SYSCALL_SHUTDOWN:
+            sys_next_status("S", 0);
+            return 0;
+        case SYSCALL_REBOOT:
+            sys_next_status("R", 0);
+            return 0;
     }
-    vga_print_scr_nw(message);
+    return -1;
 }

SystemLib/SysCalls/basic_syscall.h

@@ -1,9 +1,15 @@
 #ifndef BASIC_SYSCALL_H
 #define BASIC_SYSCALL_H
 
-#include "../../SystemLib/Std/types.h"
+#include "../../Drivers/Vga/vga.h"
+#include "../../Kernel/KernelServices/SystemManagement/sysmng.h"
 
-void exit_program(const char *mode, const char *message);
-void log_message(const char *mode, const char *message);
+#define SYSCALL_PRINT 0
+#define SYSCALL_CLEAR_SCREEN 1
+#define SYSCALL_SHUTDOWN 2
+#define SYSCALL_REBOOT 3
+
+int syscall(int id, void* arg);
+int syscall_handler(int id, void* arg);
 
 #endif