From fde8a1ab65d5e33d90123a3aaa9b5c15e249689f Mon Sep 17 00:00:00 2001
From: Loic Guegan <manzerbredes@mailbox.org>
Date: Thu, 29 Apr 2021 08:49:41 +0200
Subject: Debug, add memory print driver

---
 src/drivers/memtext.cc | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 src/drivers/memtext.cc

(limited to 'src/drivers/memtext.cc')

diff --git a/src/drivers/memtext.cc b/src/drivers/memtext.cc
new file mode 100644
index 0000000..b5371b1
--- /dev/null
+++ b/src/drivers/memtext.cc
@@ -0,0 +1,41 @@
+#include "memtext.hpp"
+#include "core/paging.hpp"
+#include "core/types.hpp"
+#include "libs/string.hpp"
+
+
+
+char memtext_buffer[MEMTEXT_BUFFER_SIZE];
+u64 memtext_x=0;
+
+void memtext_init(){
+    PAGING_MAP2_RANGE(MEMTEXT_ADDR_LOCATION,0x0,8);
+    u64* p_addr=(u64*)MEMTEXT_ADDR_LOCATION;
+    *p_addr=(u64)memtext_buffer;
+
+    // Cleaning buffer
+    for(memtext_x=0;memtext_x<MEMTEXT_BUFFER_SIZE;memtext_x++)
+        memtext_buffer[memtext_x]=0;
+    memtext_x=0;
+}
+
+void memtext_putchar(char c){
+    
+    if(memtext_x>=MEMTEXT_BUFFER_SIZE){
+        memtext_scrollup(1);
+        memtext_buffer[memtext_x-1]=c;
+        return;
+    }
+    memtext_buffer[memtext_x]=c;
+    memtext_x++;
+}
+
+void memtext_scrollup(u32 n){
+    u64 start=(u64)memtext_buffer;    
+   for(u64 i=0;i<MEMTEXT_BUFFER_SIZE;i++){
+        if(i+n<MEMTEXT_BUFFER_SIZE)
+            memtext_buffer[i]=memtext_buffer[i+n];
+        else
+            memtext_buffer[i]=0;
+   }
+}
\ No newline at end of file
-- 
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