Add dump command in kernel shell

core/panic/ui.cpp

@@ -156,7 +156,7 @@ nsa void ExDumpData(void *Address, unsigned long Length)
 			Display->UpdateBuffer();
 		}
 		ExPrint(" \e4287f5%02x\eAABBCC", AddressChar[Iterate]);
-		if ((AddressChar[Iterate] < 0x20) || (AddressChar[Iterate] > 0x7e))
+		if ((AddressChar[Iterate] < 0x20) || (AddressChar[Iterate] > 0x7E))
 			Buffer[Iterate % 16] = '.';
 		else
 			Buffer[Iterate % 16] = AddressChar[Iterate];

kshell/cmds.hpp

@@ -43,6 +43,7 @@ void cmd_lsacpi(const char *args);
 void cmd_lsmod(const char *args);
 void cmd_modinfo(const char *args);
 void cmd_panic(const char *args);
+void cmd_dump(const char *args);
 
 #define IF_ARG(x) strcmp(args, x) == 0
 

kshell/commands/dump.cpp

@@ -0,0 +1,77 @@
+/*
+	This file is part of Fennix Kernel.
+
+	Fennix Kernel is free software: you can redistribute it and/or
+	modify it under the terms of the GNU General Public License as
+	published by the Free Software Foundation, either version 3 of
+	the License, or (at your option) any later version.
+
+	Fennix Kernel is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#include "../cmds.hpp"
+
+#include <filesystem.hpp>
+#include <acpi.hpp>
+
+#include "../../kernel.h"
+
+using namespace vfs;
+
+void cmd_dump(const char *args)
+{
+	if (args[0] == '\0')
+		return;
+
+	// args == "0xdeadbeef 512" aka "address size"
+
+	char *strAddr = (char *)args;
+	char *strLen = (char *)args;
+	while (*strLen != ' ')
+		strLen++;
+	*strLen = '\0';
+	strLen++;
+
+	void *Address = (void *)strtoul(strAddr, nullptr, 16);
+	unsigned long Length = strtoul(strLen, nullptr, 10);
+
+	{
+		unsigned char *AddressChar = (unsigned char *)Address;
+		unsigned char Buffer[17];
+		uint32_t Iterate;
+
+		printf("Dumping %lu bytes from %#lx\n", Length, (uintptr_t)AddressChar);
+
+		for (Iterate = 0; Iterate < (uint32_t)Length; Iterate++)
+		{
+			if ((Iterate % 16) == 0)
+			{
+				if (Iterate != 0)
+					printf("  %s\n", Buffer);
+				printf("  %04x ", Iterate);
+			}
+
+			printf(" %02x", AddressChar[Iterate]);
+
+			if ((AddressChar[Iterate] < 0x20) || (AddressChar[Iterate] > 0x7E))
+				Buffer[Iterate % 16] = '.';
+			else
+				Buffer[Iterate % 16] = AddressChar[Iterate];
+
+			Buffer[(Iterate % 16) + 1] = '\0';
+		}
+
+		while ((Iterate % 16) != 0)
+		{
+			printf("   ");
+			Iterate++;
+		}
+		putchar('\n');
+	}
+}

kshell/shell.cpp

@@ -78,6 +78,7 @@ static Command commands[] = {
 	{"modprobe", nullptr},
 	{"depmod", nullptr},
 	{"panic", cmd_panic},
+	{"dump", cmd_dump},
 };
 
 void StartKernelShell()