Avoid calling malloc/free in the library code.

FossilOrigin-Name: 3e7c2c1b4beda2a729c880caf1a41c441e0a8387d40b666ac7163eb1346653b5

1 files changed, 43 insertions, 0 deletions

diff --git a/src/memory.c b/src/memory.c
new file mode 100644
index 0000000..c2216b2
--- /dev/null
+++ b/src/memory.c
@@ -0,0 +1,43 @@
+#include <aplwc_internal.h>
+
+Memory
+memory_init(uint8_t *data , size_t size)
+{
+	Memory mem = {
+		.data = data,
+		.size = size,
+		.offset = 0,
+	};
+	return mem;
+}
+
+static void *
+alloc(Memory *m, size_t size, size_t align)
+{
+	uintptr_t ptr = (uintptr_t)m->data;
+	size_t alloc_size = size;
+	if((ptr % align) != 0)
+		alloc_size += align - (ptr % align);
+
+	void *p = NULL;
+	if((m->size - m->offset) >= alloc_size){
+		p = m->data+m->offset+alloc_size-size;
+		m->offset += alloc_size;
+		memset(p, 0, size);
+	}
+	return p;
+}
+
+Aplwc *
+memory_alloc_aplwc(Memory *m)
+{
+	Aplwc *p = alloc(m, sizeof(Aplwc), alignof(Aplwc));
+	return p;
+}
+
+void
+memory_free_aplwc(Memory *m, Aplwc *p)
+{
+	UNUSED_PARAMETER(m);
+	UNUSED_PARAMETER(p);
+}