fix: remove kernel mouse cursor demo, +add two future-implemented syscalls for shutdown & reset

programs/include/Api/Syscall.hpp

@@ -37,6 +37,8 @@ namespace Zenith {
     static constexpr uint64_t SYS_WAITPID         = 23;
     static constexpr uint64_t SYS_TERMSIZE        = 24;
     static constexpr uint64_t SYS_GETARGS         = 25;
+    static constexpr uint64_t SYS_RESET           = 26;
+    static constexpr uint64_t SYS_SHUTDOWN        = 27;
 
     struct FbInfo {
         uint64_t width;

programs/include/zenith/syscall.h

@@ -176,4 +176,15 @@ namespace zenith {
         if (rows) *rows = (int)(r >> 32);
     }
 
+    // Power management
+    [[noreturn]] inline void reset() {
+        syscall0(Zenith::SYS_RESET);
+        __builtin_unreachable();
+    }
+
+    [[noreturn]] inline void shutdown() {
+        syscall0(Zenith::SYS_SHUTDOWN);
+        __builtin_unreachable();
+    }
+
 }

programs/src/shell/main.cpp

@@ -96,6 +96,8 @@ static void cmd_help() {
     zenith::print("  ping <ip>     Send ICMP echo requests\n");
     zenith::print("  uptime        Show uptime in milliseconds\n");
     zenith::print("  clear         Clear the screen\n");
+    zenith::print("  reset         Reboot the system\n");
+    zenith::print("  shutdown      Shut down the system\n");
     zenith::print("  exit          Exit the shell\n");
 }
 
@@ -430,6 +432,12 @@ static void process_command(const char* line) {
         cmd_uptime();
     } else if (streq(line, "clear")) {
         cmd_clear();
+    } else if (streq(line, "reset")) {
+        zenith::print("Rebooting...\n");
+        zenith::reset();
+    } else if (streq(line, "shutdown")) {
+        zenith::print("Shutting down...\n");
+        zenith::shutdown();
     } else if (streq(line, "exit")) {
         zenith::print("Goodbye.\n");
         zenith::exit(0);