From e15d41a5619c41f3440369e625d6d96921718221 Mon Sep 17 00:00:00 2001
From: Christian Cunningham <cc@localhost>
Date: Thu, 30 Dec 2021 20:50:44 -0800
Subject: Added Data Structures

Added basic scheduling

TODO: Preserve registers for context switch
---
 src/lib/mem.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

(limited to 'src/lib/mem.c')

diff --git a/src/lib/mem.c b/src/lib/mem.c
index 3683ae7..0069623 100644
--- a/src/lib/mem.c
+++ b/src/lib/mem.c
@@ -41,3 +41,22 @@ unsigned char memcmp32(unsigned long* a, unsigned long* b, unsigned int n)
 	}
 	return 1;
 }
+
+#define MAX_MM 0x100000
+static unsigned char rpi_heap[MAX_MM] = {0,};
+
+void* malloc(unsigned char size)
+{
+	unsigned char* mem = (unsigned char*)rpi_heap;
+	unsigned long i = 0;
+	while (mem[i] != 0) {
+		i += mem[i]+1;
+	}
+	mem[i] = size;
+	return (void*)&mem[i+1];
+}
+
+void free(__attribute__((unused)) void* memloc)
+{
+	// TODO: Implement free
+}
-- 
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