Format gbi.h, move ucode defines to makefile (#1650)

* Format gbi.h, move ucode defines to makefile, correct usage of gDPSetDither

* UCODE_DEFS -> GBI_DEFINES, add GBI_DOWHILE toggle

* Define GBI_DOWHILE for bss calculations

* Makefile thing

src/code/sys_math3d.c

@@ -1,6 +1,6 @@
-#include "prevent_bss_reordering.h"
+#include "prevent_bss_reordering2.h" // bumps the bss index by 65
 // clang-format off
-// Partial structs taken from "prevent_bss_reordering.h"
+// Partial structs taken from "prevent_bss_reordering.h", bumps the bss index by 56
 struct Dummy200 { int x; };
 struct Dummy201 { int x; };
 struct Dummy202 { int x; };
@@ -14,12 +14,29 @@ struct Dummy209 { int x; };
 struct Dummy210 { int x; };
 struct Dummy211 { int x; };
 struct Dummy212 { int x; };
+struct Dummy213 { int x; };
+struct Dummy214 { int x; };
+struct Dummy215 { int x; };
+struct Dummy216 { int x; };
+struct Dummy217 { int x; };
+struct Dummy218 { int x; };
+struct Dummy219 { int x; };
+struct Dummy220 { int x; };
+struct Dummy221 { int x; };
+struct Dummy222 { int x; };
+struct Dummy223 { int x; };
+struct Dummy224 { int x; };
+struct Dummy225 { int x; };
+struct Dummy226 { int x; };
+struct Dummy227 { int x; };
 // clang-format on
 
+// Headers are currently valued at 63 mod 256 (./tools/calc_bss.sh <headers>)
 #include "z64math.h"
 
 #include "libc/stdbool.h"
 #include "PR/gu.h"
+// The bss index at this point should be 184
 
 Vec3f gZeroVec3f = { 0.0f, 0.0f, 0.0f };
 Vec3s gZeroVec3s = { 0, 0, 0 };

src/code/z_bgcheck.c

@@ -1,3 +1,4 @@
+#include "prevent_bss_reordering.h"
 #include "z64bgcheck.h"
 
 #include "libc64/fixed_point.h"

src/code/z_lights.c

@@ -428,7 +428,7 @@ void Lights_DrawGlow(PlayState* play) {
 
         gfx = Gfx_SetupDL65_NoCD(POLY_XLU_DISP);
 
-        gDPSetDither(gfx++, G_CD_NOISE);
+        gDPSetDither(gfx++, G_AD_PATTERN | G_CD_NOISE);
 
         gDPSetCombineLERP(gfx++, 0, 0, 0, PRIMITIVE, TEXEL0, 0, PRIMITIVE, 0, 0, 0, 0, PRIMITIVE, TEXEL0, 0, PRIMITIVE,
                           0);

src/code/z_map_disp.c

@@ -1,3 +1,4 @@
+#include "prevent_bss_reordering.h"
 #include "global.h"
 #include "gfx.h"
 #include "sys_cmpdma.h"

src/code/z_message.c

@@ -1,3 +1,4 @@
+#include "prevent_bss_reordering.h"
 #include "z64message.h"
 #include "global.h"