Some changes here and there

1 files changed, 13 insertions, 0 deletions

diff --git a/kernel/features/mm.c b/kernel/features/mm.c
index 0972ab3..9a7a64e 100644
--- a/kernel/features/mm.c
+++ b/kernel/features/mm.c
@@ -82,14 +82,19 @@ void page_fault_handler(struct regs *r)
 	u32 paddr = virtual_to_physical(dir, vaddr);
 
 	// Print!
+
 	printf("%s process tried to %s a %s page at [vaddr=%x; paddr=%x]\n", super, operation, type,
 	       vaddr, paddr);
+
 	if (proc && vaddr > proc->regs.ebp - PROC_STACK_SIZE - PAGE_SIZE &&
 	    vaddr < proc->regs.ebp + PAGE_SIZE)
 		print("Probably a stack overflow\n");
+
 	printf("Sections: [vaddr_section=%s; paddr_section=%s; eip_section=%s]\n",
 	       page_fault_section(vaddr), page_fault_section(paddr), page_fault_section(r->eip));
 
+	/* printf("%b\n", virtual_entry(dir, vaddr)->uint); */
+
 	isr_panic(r);
 }
 
@@ -421,6 +426,14 @@ err:
 	return NULL;
 }
 
+void *memory_alloc_with_boundary(struct page_dir *dir, u32 size, u32 flags)
+{
+	u32 mem = PAGE_SIZE + (u32)memory_alloc(dir, size + 2 * PAGE_SIZE, flags);
+	virtual_remap_readonly(dir, memory_range(mem - PAGE_SIZE, PAGE_SIZE));
+	virtual_remap_readonly(dir, memory_range(mem + size, PAGE_SIZE));
+	return (void *)mem;
+}
+
 void *memory_alloc_identity(struct page_dir *dir, u32 flags)
 {
 	for (u32 i = 1; i < PAGE_KERNEL_COUNT * PAGE_COUNT; i++) {