fixed some bugs and made the paging code compile

kernel/arch/x86_64/include/paging.h

@@ -1,12 +1,11 @@
 #pragma once
 #include <stdint.h>
 #include <pmm.hpp>
-#include <regs.h>
 #include <paging.hpp>
 typedef phys_t virt_t;
 struct pagemap_tbl {
     bool active:1;
-    bool writable:1;
+    bool writeable:1;
     bool unprivileged:1;
     bool no_write_cache:1;
     bool no_read_cache:1;
@@ -22,7 +21,7 @@ static_assert(sizeof(pagemap_tbl)==8);
 
 struct pagemap {
     bool active:1;
-    bool writable:1;
+    bool writeable:1;
     bool unprivileged:1;
     bool no_write_cache:1;
     bool no_read_cache:1;
@@ -69,7 +68,6 @@ struct pagetbl {
     phys_t page:40;
     uint16_t ignored2:11;
     bool executable:1;
-}
 }__attribute__((packed));
 
 

kernel/arch/x86_64/paging.cpp

@@ -6,11 +6,12 @@ extern int kernel_end;
 
 
 paging_context_x86::paging_context_x86(): paging_context() {
+    phys_t pagedir_addr;
     *pmm >> pagedir_addr;
     if(context_enabled) {
         current_context->mmap(pagedir_addr, (void*)0x800000, protection::RW, false);
         pagemap *src=(pagemap *)0x400000;
-        pagemap *dest=(pagedir*)0x600000;
+        pagemap *dest=(pagemap*)0x600000;
         for(int i=0;i<256;i++)
             dest[i]=src[i];
         for(int i=256;i<512;i++)
@@ -18,7 +19,7 @@ paging_context_x86::paging_context_x86(): paging_context() {
         dest[0].active=false;
         phys_t first_pagedir;
         *pmm >> first_pagedir;
-        dest[0].pagetable = first_pagedir >> 12;
+        dest[0].pagedir = first_pagedir >> 12;
         dest[0].writeable=true;
         dest[0].unprivileged=false;
         dest[0].no_write_cache=true;

kernel/src/include/base.hpp

@@ -12,7 +12,7 @@ void setMainTTY(TTY *obj);
 /**
  * Halts the kernel due to a unresolvable error
  */
-extern "C" void panic(const char* s);
+extern "C" __attribute__((noreturn)) void panic(const char* s);
 
 #if !defined(__LITTLE_ENDIAN__) || !defined(__BIG_ENDIAN__)
 #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__

kernel/src/include/pmm.hpp

@@ -7,8 +7,7 @@ typedef uintptr_t phys_t; ///< Type used for physical addresses
 /**
  * A single entry in the PMM list
  */
-
-#if BITS == 32
+#ifndef __x86_64__
 /**
  * Physical memory manager. It stores the free memory in a linked list
  */
@@ -32,7 +31,6 @@ class PMM {
 };
 
 #else
-
 struct pmm_entry {
     phys_t next;
     phys_t last;

kernel/src/pmm.cpp

@@ -1,6 +1,6 @@
 #include <base.hpp>
 
-#ifdef BITS == 64
+#ifdef __x86_64__
 #include "pmm64.hpp"
 #else
 #include "pmm32.hpp"

kernel/src/pmm64.hpp

@@ -93,6 +93,7 @@ auto PMM::operator,(size_t no_pages) -> phys_t {
 outlbl:
         continue;
     }
+    panic("Ran out of memory");
 }
 
 auto PMM::operator()(phys_t pages, size_t no_pages) -> void {