{physical_mm,virtual_mm,kmalloc}: C->C++

1 files changed, 74 insertions, 0 deletions

diff --git a/kernel/libk/kmalloc.cc b/kernel/libk/kmalloc.cc
new file mode 100644
index 0000000..4afaa61
--- /dev/null
+++ b/kernel/libk/kmalloc.cc
@@ -0,0 +1,74 @@
+/*
+
+ * bubbl
+ * Copyright (C) 2025  Raghuram Subramani <raghus2247@gmail.com>
+ *
+ * This program 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.
+ *
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <libk/kmalloc.h>
+#include <libk/stdio.h>
+#include <mm/virtual_mm.h>
+#include <stddef.h>
+#include <stdint.h>
+
+memory_chunk_t *starting_mc = NULL;
+
+static memory_chunk_t *
+add_block(void *address, uint32_t size)
+{
+  memory_chunk_t *mc = (memory_chunk_t *) address;
+  mc->next = NULL;
+  mc->prev = NULL;
+
+  uint32_t chunk_size = size - sizeof(memory_chunk_t);
+  printk("kmalloc", "size(0x%x) chunk_size(0x%x)");
+
+  mc->size = chunk_size;
+  printk("kmalloc",
+         "mc(0x%x) mc->size(0x%x) chunk_size(0x%x)",
+         mc,
+         mc->size,
+         chunk_size);
+  return mc;
+}
+
+static void
+kmalloc_init(void)
+{
+  int *initial_region = (int *) VirtualMM::alloc_pages(MIN_PAGES);
+  printk("debug", "%x", initial_region);
+  /* *initial_region = 10; */
+
+  /* memory_chunk_t *mc = (memory_chunk_t *) initial_region; */
+  /* mc->size = 10; */
+  /* printk("kmalloc", "mc->size(0x%x)", mc->size); */
+
+  /* starting_mc = add_block(initial_region, 4 * PAGE_SIZE); */
+}
+
+void *
+kmalloc(uint32_t size)
+{
+  if (!starting_mc)
+    kmalloc_init();
+
+  /* printk("kmalloc", */
+  /*        "Initialized region with starting_mc(0x%x) and size(0x%x)", */
+  /*        starting_mc, */
+  /*        starting_mc->size); */
+
+  (void) size;
+  return NULL;
+}