reorganize headers and add CpuFill macros

include/gba/io_reg.h

@@ -1,5 +1,5 @@
-#ifndef GUARD_IO_REGS_H
-#define GUARD_IO_REGS_H
+#ifndef GUARD_GBA_IO_REG_H
+#define GUARD_GBA_IO_REG_H
 
 #define REG_BASE 0x4000000 // I/O register base address
 
@@ -385,4 +385,4 @@
 #define INTR_FLAG_KEYPAD  (1 << 12)
 #define INTR_FLAG_GAMEPAK (1 << 13)
 
-#endif // GUARD_IO_REGS_H
+#endif // GUARD_GBA_IO_REG_H

include/gba/macro.h

@@ -0,0 +1,15 @@
+#ifndef GUARD_GBA_MACRO_H
+#define GUARD_GBA_MACRO_H
+
+#define CPU_FILL(dest, value, size, bit)                                          \
+do {                                                                              \
+    vu##bit tmp = (vu##bit)(value);                                               \
+    CpuSet((void *)&tmp,                                                          \
+           dest,                                                                  \
+           CPU_SET_##bit##BIT | CPU_SET_SRC_FIXED | ((size)/(bit/8) & 0x1FFFFF)); \
+} while (0)
+
+#define CpuFill16(dest, value, size) CPU_FILL(dest, value, size, 16)
+#define CpuFill32(dest, value, size) CPU_FILL(dest, value, size, 32)
+
+#endif // GUARD_GBA_MACRO_H

include/gba/syscall.h

@@ -0,0 +1,10 @@
+#ifndef GUARD_GBA_SYSCALL_H
+#define GUARD_GBA_SYSCALL_H
+
+#define CPU_SET_SRC_FIXED 0x01000000
+#define CPU_SET_16BIT     0x00000000
+#define CPU_SET_32BIT     0x04000000
+
+extern void CpuSet(void *src, void *dest, u32 controlData);
+
+#endif // GUARD_GBA_SYSCALL_H

include/global.h

@@ -27,11 +27,8 @@ typedef u32 bool32;
 #define TRUE  1
 #define FALSE 0
 
-#include "io_regs.h"
-
-#define CPU_SET_SRC_FIX (1 << 24)
-#define CPU_SET_32BIT   (1 << 26)
-
-extern void CpuSet(void *src, void *dest, u32 controlData);
+#include "gba/io_reg.h"
+#include "gba/syscall.h"
+#include "gba/macro.h"
 
 #endif // GUARD_GLOBAL_H