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Diffstat (limited to 'util/extensions/legacybios/kernel/malloc.c')
-rw-r--r--util/extensions/legacybios/kernel/malloc.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/util/extensions/legacybios/kernel/malloc.c b/util/extensions/legacybios/kernel/malloc.c
new file mode 100644
index 0000000000..782b516222
--- /dev/null
+++ b/util/extensions/legacybios/kernel/malloc.c
@@ -0,0 +1,35 @@
+
+// 32k heap
+
+
+void printk(const char *fmt, ...);
+#define error printk
+
+static unsigned long free_mem_ptr = 0x20000; /* Start of heap */
+static unsigned long free_mem_end_ptr = 0x28000; /* End of heap */
+
+
+void *malloc(unsigned int size)
+{
+ void *p;
+
+ if (size < 0)
+ error("Error! malloc: Size < 0");
+ if (free_mem_ptr <= 0)
+ error("Error! malloc: Free_mem_ptr <= 0");
+
+ free_mem_ptr = (free_mem_ptr + 3) & ~3; /* Align */
+
+ p = (void *) free_mem_ptr;
+ free_mem_ptr += size;
+
+ if (free_mem_ptr >= free_mem_end_ptr)
+ error("Error! malloc: Free_mem_ptr >= free_mem_end_ptr");
+
+ return p;
+}
+
+void free(void *where)
+{
+ /* Don't care */
+}