Decompile GX_asm and GX_g3

3 files changed, 76 insertions, 0 deletions

diff --git a/arm9/lib/include/gx.h b/arm9/lib/include/gx.h
new file mode 100644
index 00000000..ad3f1a6e
--- /dev/null
+++ b/arm9/lib/include/gx.h
@@ -0,0 +1,24 @@
+#ifndef GUARD_GX_H
+#define GUARD_GX_H
+
+struct DL
+{
+    u8 *var00; //end pointer
+    u32 *var04; //aligned end pointer
+    u8 *var08; //start pointer
+    u32 var0C;
+    u32 var10; //pad end with zero bool
+};
+
+//GX_g3
+void G3_BeginMakeDL(struct DL *displaylist, void *r1, u32 r2);
+s32 G3_EndMakeDL(struct DL *displaylist);
+
+
+//GX_asm
+void GX_SendFifo48B(void *src, void *dst);
+
+
+//GXi_NopClearFifo128_ probably asm
+
+#endif //GUARD_GX_H
diff --git a/arm9/lib/src/GX_asm.c b/arm9/lib/src/GX_asm.c
new file mode 100644
index 00000000..1eb0a011
--- /dev/null
+++ b/arm9/lib/src/GX_asm.c
@@ -0,0 +1,16 @@
+#include "global.h"
+#include "main.h"
+#include "gx.h"
+
+//looks like asm and says asm on the tin...
+ARM_FUNC asm void GX_SendFifo48B(void *src, void *dst){
+    ldmia r0!, {r2-r3,r12}
+    stmia r1, {r2-r3,r12}
+    ldmia r0!, {r2-r3,r12}
+    stmia r1, {r2-r3,r12}
+    ldmia r0!, {r2-r3,r12}
+    stmia r1, {r2-r3,r12}
+    ldmia r0!, {r2-r3,r12}
+    stmia r1, {r2-r3,r12}
+    bx lr
+}
diff --git a/arm9/lib/src/GX_g3.c b/arm9/lib/src/GX_g3.c
new file mode 100644
index 00000000..66e34dc7
--- /dev/null
+++ b/arm9/lib/src/GX_g3.c
@@ -0,0 +1,36 @@
+#include "global.h"
+#include "main.h"
+#include "gx.h"
+
+
+void G3_BeginMakeDL(struct DL *displaylist, void *r1, u32 r2){
+    displaylist->var0C = r2;
+    displaylist->var08 = r1;
+    displaylist->var00 = r1;
+    displaylist->var04 = (u32 *)r1 + 1;
+    displaylist->var10 = 0x0;
+}
+
+s32 G3_EndMakeDL(struct DL *displaylist){
+    if (displaylist->var08 == displaylist->var00)
+        return 0;
+    //pads the buffer with 0 to 4byte alignment if needed
+    switch((u32)displaylist->var00 & 0x3)
+    {
+    case 0:
+        return displaylist->var00 - displaylist->var08;
+    case 1:
+        *displaylist->var00++ = 0x0;
+    case 2:
+        *displaylist->var00++ = 0x0;
+    case 3:
+        *displaylist->var00++ = 0x0;
+    }
+    if (displaylist->var10)
+    {
+        *displaylist->var04++ = 0x0;
+        displaylist->var10 = 0x0;
+    }
+    displaylist->var00 = (u8 *)displaylist->var04;
+    return displaylist->var00 - displaylist->var08;
+}