From 5b30cacacf0f0ca6fb06bb34389f04b05ceb2b15 Mon Sep 17 00:00:00 2001
From: Amlal El Mahrouss <amlal@nekernel.org>
Date: Sun, 25 May 2025 09:56:46 +0200
Subject: kernel!: lots of changes, see commit details.

refactor(hal): unify file naming and drop redundant architecture suffixes

feat(build): rename kernel and bootloader to 'ne_kernel' and 'ne_bootz'

refactor(memory): replace mm_get_phys_address with mm_get_page_addr

feat(bitmap): track bitmap allocator usage and add out-of-memory error

fix(heap): correct heap magic naming and alignment logic

chore(fs): downgrade HeFS disk size check to warning

chore(tools): clean up formatting in 'ping' and 'manual'

docs(design): update OS_DESIGN.drawio to reflect Hypr86 and new layout

Signed-off-by: Amlal El Mahrouss <amlal@nekernel.org>
---
 dev/kernel/src/BitMapMgr.cc | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

(limited to 'dev/kernel/src/BitMapMgr.cc')

diff --git a/dev/kernel/src/BitMapMgr.cc b/dev/kernel/src/BitMapMgr.cc
index 4301ce5b..df678d41 100644
--- a/dev/kernel/src/BitMapMgr.cc
+++ b/dev/kernel/src/BitMapMgr.cc
@@ -22,6 +22,8 @@
 namespace Kernel {
 namespace HAL {
   namespace Detail {
+    STATIC SizeT kBitMapCursor = 0UL;
+
     /***********************************************************************************/
     /// \brief Proxy Interface to manage a bitmap allocator.
     /***********************************************************************************/
@@ -47,6 +49,8 @@ namespace HAL {
 
         UIntPtr* ptr_bit_set = reinterpret_cast<UIntPtr*>(page_ptr);
 
+        kBitMapCursor += ptr_bit_set[kBitMapSizeIdx];
+
         ptr_bit_set[kBitMapMagIdx]  = kBitMapMagic;
         ptr_bit_set[kBitMapUsedIdx] = No;
 
@@ -59,7 +63,6 @@ namespace HAL {
         UInt32 flags = kMMFlagsPresent;
 
         if (wr) flags |= kMMFlagsWr;
-
         if (user) flags |= kMMFlagsUser;
 
         return flags;
@@ -77,11 +80,18 @@ namespace HAL {
       auto FindBitMap(VoidPtr base_ptr, SizeT size, Bool wr, Bool user, SizeT pad) -> VoidPtr {
         if (!size) return nullptr;
 
+        if (kBitMapCursor > kKernelBitMpSize) {
+          err_global_get() = kErrorOutOfBitMapMemory;
+
+          (Void)(kout << "Bitmap limit reached, can't allocate more bitmaps." << kendl);
+          return nullptr;
+        }
+
         VoidPtr base = reinterpret_cast<VoidPtr>((UIntPtr) base_ptr);
 
         MUST_PASS(base);
 
-        static SizeT biggest = 0UL;
+        STATIC SizeT biggest = 0UL;
 
         while (YES) {
           UIntPtr* ptr_bit_set = reinterpret_cast<UIntPtr*>(base);
@@ -99,6 +109,8 @@ namespace HAL {
 
               if (biggest < (size + pad)) biggest = size + pad;
 
+              kBitMapCursor += size + pad;
+
               return (VoidPtr) ptr_bit_set;
             }
           } else if (ptr_bit_set[kBitMapMagIdx] != kBitMapMagic) {
@@ -113,6 +125,8 @@ namespace HAL {
 
             if (biggest < (size + pad)) biggest = (size + pad);
 
+            kBitMapCursor += size + pad;
+
             return (VoidPtr) ptr_bit_set;
           }
 
-- 
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