Add: cpuid, meminfo, system info; + minor fixes

src/kernel/kmain.c

@@ -14,9 +14,12 @@ char* ascii_title =
 "   o888ooo888 o888o 88ooo88 8o o888o o888o o888o o888o   88ooo88   o88oooo888\n\n"
 "   --------------------------------- v0.3.45 --------------------------------\n\n";
 
-int kmain(int retvalue)
+unsigned int g_multiboot_info_address;
+
+void kmain(unsigned int multiboot_info_address)
 {
-  
+  g_multiboot_info_address = multiboot_info_address;
+
   init_serial();
   log("serial connection established", 3);
   gdt_install();
@@ -29,18 +32,14 @@ int kmain(int retvalue)
   __asm__ __volatile__("sti");
   log("initialized IRQs", 2),
  
-  log("kernel started", 2);
-
   clear();
-
   colorputs(ascii_title, 10);
   colorputs("   by @xamidev - star the repo for a cookie!\n\n", 14);
-
-  // TODO: Grub modules to load programs
-  
+ 
   timer_install();
+  log("initialized timer handler", 2);
   keyboard_install();
+  log("initialized keyboard driver", 2);
   shell_install();
-
-  return retvalue;
+  log("started system shell", 2);
 }

src/kernel/loader.s

@@ -19,7 +19,8 @@ extern kmain
 loader:
   cli
   ; mov eax, 0xCAFEBABE
-  push dword 42
+  ; push dword 42
+  push ebx
   call kmain
 
 .loop:

src/kernel/shell.c

@@ -64,6 +64,7 @@ void shell_install()
   register_command("bf", program_bf);
   register_command("uptime", program_uptime);
   register_command("echo", program_echo);
+  register_command("sysinfo", program_sysinfo);
   
   for (;;)
   {

src/kernel/sysinfo.c

@@ -0,0 +1,11 @@
+#include "../libc/stdio.h"
+#include "../libc/string.h"
+
+void cpuid(int code, unsigned int* a, unsigned int* d)
+{
+	asm volatile("cpuid"
+			: "=a"(*a), "=d"(*d)
+			: "a"(code)
+			: "ecx", "ebx");
+}
+

src/kernel/sysinfo.h

@@ -0,0 +1,6 @@
+#ifndef SYSINFO_H
+#define SYSINFO_H
+
+void cpuid(int code, unsigned int* a, unsigned int* d);
+
+#endif

src/kernel/system.h

@@ -26,5 +26,7 @@ int uptime();
 
 extern volatile unsigned long global_ticks;
 
+extern unsigned int g_multiboot_info_address;
+
 #endif