Compiler and memory bug fixes

src/kernel/cli_apps/cli_apps.h

@@ -28,6 +28,8 @@ void cli_cmd_rm(char *args);
 void cli_cmd_echo(char *args);
 void cli_cmd_cat(char *args);
 void cli_cmd_touch(char *args);
+void cli_cmd_cp(char *args);
+void cli_cmd_mv(char *args);
 
 // Memory management commands
 void cli_cmd_meminfo(char *args);

src/kernel/cli_apps/fs_commands.c

@@ -275,3 +275,116 @@ void cli_cmd_touch(char *args) {
     cli_write(filename);
     cli_write("\n");
 }
+
+void cli_cmd_cp(char *args) {
+    char *src = args;
+    while (*src == ' ') src++;
+    
+    char *dest = src;
+    while (*dest && *dest != ' ') dest++;
+    
+    if (*dest) {
+        *dest = 0;
+        dest++;
+        while (*dest == ' ') dest++;
+    }
+    
+    if (!*src || !*dest) {
+        cli_write("Usage: cp <source> <dest>\n");
+        return;
+    }
+    
+    // Check if dest is a directory
+    char final_dest[256];
+    cli_strcpy(final_dest, dest);
+    
+    if (fat32_is_directory(dest)) {
+        // Append filename from src to dest
+        int len = cli_strlen(final_dest);
+        if (len > 0 && final_dest[len-1] != '/') {
+            final_dest[len++] = '/';
+            final_dest[len] = 0;
+        }
+        
+        // Extract filename from src
+        const char *fname = src;
+        const char *p = src;
+        while (*p) {
+            if (*p == '/') fname = p + 1;
+            p++;
+        }
+        
+        // Append
+        int j = 0;
+        while (fname[j]) {
+            final_dest[len++] = fname[j++];
+        }
+        final_dest[len] = 0;
+    }
+    
+    FAT32_FileHandle *fh_in = fat32_open(src, "r");
+    if (!fh_in) {
+        cli_write("Error: Cannot open source file: ");
+        cli_write(src);
+        cli_write("\n");
+        return;
+    }
+    
+    FAT32_FileHandle *fh_out = fat32_open(final_dest, "w");
+    if (!fh_out) {
+        cli_write("Error: Cannot create destination file: ");
+        cli_write(final_dest);
+        cli_write("\n");
+        fat32_close(fh_in);
+        return;
+    }
+    
+    char buffer[4096];
+    int bytes;
+    while ((bytes = fat32_read(fh_in, buffer, sizeof(buffer))) > 0) {
+        fat32_write(fh_out, buffer, bytes);
+    }
+    
+    fat32_close(fh_in);
+    fat32_close(fh_out);
+    
+    cli_write("Copied ");
+    cli_write(src);
+    cli_write(" to ");
+    cli_write(final_dest);
+    cli_write("\n");
+}
+
+void cli_cmd_mv(char *args) {
+    // Parse args similar to cp
+    char *src = args;
+    while (*src == ' ') src++;
+    
+    char *dest = src;
+    while (*dest && *dest != ' ') dest++;
+    
+    if (*dest) {
+        *dest = 0;
+        dest++;
+        while (*dest == ' ') dest++;
+    }
+    
+    if (!*src || !*dest) {
+        cli_write("Usage: mv <source> <dest>\n");
+        return;
+    }
+    
+
+    char cp_args[512];
+    int i = 0;
+    const char *s = src;
+    while (*s) cp_args[i++] = *s++;
+    cp_args[i++] = ' ';
+    const char *d = dest;
+    while (*d) cp_args[i++] = *d++;
+    cp_args[i] = 0;
+    
+    cli_cmd_cp(cp_args);
+
+    fat32_delete(src);
+}

src/kernel/cmd.c

@@ -451,6 +451,10 @@ static const CommandEntry commands[] = {
     {"cat", cli_cmd_cat},
     {"TOUCH", cli_cmd_touch},
     {"touch", cli_cmd_touch},
+    {"CP", cli_cmd_cp},
+    {"cp", cli_cmd_cp},
+    {"MV", cli_cmd_mv},
+    {"mv", cli_cmd_mv},
     // Memory Management Commands
     {"MEMINFO", cli_cmd_meminfo},
     {"meminfo", cli_cmd_meminfo},
@@ -479,6 +483,8 @@ static const CommandEntry commands[] = {
     {"pcilist", cli_cmd_pcilist},
     {"COMPC", cli_cmd_cc},
     {"compc", cli_cmd_cc},
+    {"CC", cli_cmd_cc},
+    {"cc", cli_cmd_cc},
     {NULL, NULL}
 };
 
@@ -541,6 +547,38 @@ static void cmd_exec_single(char *cmd) {
         }
     }
 
+    // Check for executable in /Apps/
+    char app_path[256];
+    char *p = app_path;
+    const char *prefix = "/Apps/";
+    while (*prefix) *p++ = *prefix++;
+    char *c = cmd;
+    while (*c) *p++ = *c++;
+    *p = 0;
+
+    FAT32_FileHandle *app_fh = fat32_open(app_path, "r");
+    if (app_fh) {
+        uint8_t *app_buffer = (uint8_t*)kmalloc(VM_MEMORY_SIZE);
+        if (app_buffer) {
+            int size = fat32_read(app_fh, app_buffer, VM_MEMORY_SIZE);
+            fat32_close(app_fh);
+            
+            if (size > 0) {
+                int res = vm_exec(app_buffer, size);
+                if (res != 0) {
+                     cmd_write("Execution failed (invalid format or runtime error).\n");
+                }
+            } else {
+                cmd_write("Error: Empty file.\n");
+            }
+            kfree(app_buffer);
+        } else {
+            fat32_close(app_fh);
+            cmd_write("Error: Out of memory.\n");
+        }
+        return;
+    }
+
     cmd_write("Unknown command: ");
     cmd_write(cmd);
     cmd_write("\n");

src/kernel/fat32.c

@@ -108,28 +108,63 @@ static void extract_parent_path(const char *path, char *parent) {
 
 // Normalize path (remove .., ., etc)
 void fat32_normalize_path(const char *path, char *normalized) {
+    char temp[FAT32_MAX_PATH];
+    int temp_len = 0;
+
+    // Initialize with current directory or root
     if (path[0] == '/') {
-        // Absolute path
-        fs_strcpy(normalized, path);
+        temp[0] = '/';
+        temp[1] = 0;
+        temp_len = 1;
     } else {
-        // Relative path - prepend current directory
-        if (fs_strcmp(current_dir, "/") == 0) {
-            normalized[0] = '/';
-            fs_strcpy(normalized + 1, path);
-        } else {
-            fs_strcpy(normalized, current_dir);
-            if (normalized[fs_strlen(normalized) - 1] != '/') {
-                fs_strcat(normalized, "/");
+        fs_strcpy(temp, current_dir);
+        temp_len = fs_strlen(temp);
+    }
+
+    int i = 0;
+    while (path[i]) {
+        // Skip separators
+        while (path[i] == '/') i++;
+        if (!path[i]) break;
+
+        // Extract component
+        char component[256];
+        int j = 0;
+        while (path[i] && path[i] != '/' && j < 255) {
+            component[j++] = path[i++];
+        }
+        component[j] = 0;
+
+        if (fs_strcmp(component, ".") == 0) {
+            continue;
+        } else if (fs_strcmp(component, "..") == 0) {
+            // Go up one level
+            if (temp_len > 1) { // Not root
+                while (temp_len > 0 && temp[temp_len - 1] != '/') {
+                    temp_len--;
+                }
+                if (temp_len > 1) { // Remove trailing slash if not root
+                    temp_len--;
+                }
+                temp[temp_len] = 0;
             }
-            fs_strcat(normalized, path);
+        } else {
+            // Append component
+            if (temp[temp_len - 1] != '/') {
+                temp[temp_len++] = '/';
+                temp[temp_len] = 0;
+            }
+            fs_strcat(temp, component);
+            temp_len = fs_strlen(temp);
         }
     }
     
     // Remove trailing slashes (except for root)
-    int len = fs_strlen(normalized);
-    while (len > 1 && normalized[len - 1] == '/') {
-        normalized[--len] = 0;
+    if (temp_len > 1 && temp[temp_len - 1] == '/') {
+        temp[--temp_len] = 0;
     }
+    
+    fs_strcpy(normalized, temp);
 }
 
 // Find file entry by path

src/kernel/memory_manager.c

@@ -3,8 +3,10 @@
 #include <stdint.h>
 
 // --- Internal State ---
-static uint8_t *memory_pool = NULL;  // Dynamically allocated
-static size_t memory_pool_size = DEFAULT_POOL_SIZE;  // Track actual pool size
+#define KERNEL_HEAP_SIZE (32 * 1024 * 1024) // 32MB Static Heap
+static uint8_t memory_pool_buffer[KERNEL_HEAP_SIZE];
+static uint8_t *memory_pool = memory_pool_buffer;
+static size_t memory_pool_size = KERNEL_HEAP_SIZE;
 static MemBlock block_list[MAX_ALLOCATIONS];
 static int block_count = 0;
 static size_t total_allocated = 0;
@@ -119,14 +121,6 @@ static size_t calculate_fragmentation(void) {
 void memory_manager_init_with_size(size_t pool_size) {
     if (initialized) return;
     
-    memory_pool_size = pool_size;
-    
-    // Initialize memory pool - in a real kernel, this would be passed a physical address
-    // For now, we use a simple tracking mechanism where allocations are tracked virtually
-    // The caller is responsible for ensuring the pool_size is valid
-    if (memory_pool == NULL) {
-        memory_pool = (uint8_t *)0x100000000;  // Start from 4GB boundary as virtual tracking
-    }
     
     // Clear metadata
     mem_memset(block_list, 0, sizeof(block_list));