gfxalloc OK (#160)

* gfxalloc ok

* format/names

1 files changed, 29 insertions, 0 deletions

diff --git a/src/code/gfxalloc.c b/src/code/gfxalloc.c
new file mode 100644
index 0000000..62b63c5
--- /dev/null
+++ b/src/code/gfxalloc.c
@@ -0,0 +1,29 @@
+#include "gfxalloc.h"
+#include "alignment.h"
+
+Gfx* gfxopen(Gfx* gfxHead) {
+    return gfxHead + 1;
+}
+
+Gfx* gfxclose(Gfx* gfxHead, Gfx* gfx) {
+    if (gfxHead + 1 != gfx) {
+        gSPBranchList(gfxHead, gfx);
+        return gfx;
+    } else {
+        gSPNoOp(gfxHead);
+        return gfxHead;
+    }
+}
+
+void* gfxalloc(Gfx** gfxP, size_t size) {
+    u8* ptr;
+    Gfx* dst;
+
+    size = ALIGN8(size);
+    ptr = (u8*)(*gfxP + 1);
+    dst = (Gfx*)(ptr + size);
+    gSPBranchList(*gfxP, dst);
+
+    *gfxP = dst;
+    return ptr;
+}