diff --git a/include/dolphin/dsp.h b/include/dolphin/dsp.h
index a0b295351..36ca71e83 100644
--- a/include/dolphin/dsp.h
+++ b/include/dolphin/dsp.h
@@ -3,9 +3,10 @@
 
 #include "dolphin/os/OS.h"
 #include "dolphin/types.h"
+#include "dolphin/os/OSUtil.h"
 
-volatile u16 __DSPRegs[32] : 0xCC005000;
-volatile u32 __AIRegs[8] : 0xCC006C00;
+volatile u16 __DSPRegs[32] AT_ADDRESS(0xCC005000);
+volatile u32 __AIRegs[8] AT_ADDRESS(0xCC006C00);
 
 #ifdef __cplusplus
 extern "C" {
diff --git a/include/dolphin/dvd/dvdlow.h b/include/dolphin/dvd/dvdlow.h
index a7645d901..31b863974 100644
--- a/include/dolphin/dvd/dvdlow.h
+++ b/include/dolphin/dvd/dvdlow.h
@@ -2,8 +2,9 @@
 #define DVDLOW_H
 
 #include "dolphin/types.h"
+#include "dolphin/os/OSUtil.h"
 
 typedef void (*DVDLowCallback)(u32 intType);
-vu32 __DIRegs[16] : 0xCC006000;
+vu32 __DIRegs[16] AT_ADDRESS(0xCC006000);
 
 #endif /* DVDLOW_H */
diff --git a/include/dolphin/exi/EXIBios.h b/include/dolphin/exi/EXIBios.h
index 00099f62b..40bee83b0 100644
--- a/include/dolphin/exi/EXIBios.h
+++ b/include/dolphin/exi/EXIBios.h
@@ -2,6 +2,7 @@
 #define EXIBIOS_H
 
 #include "dolphin/types.h"
+#include "dolphin/os/OSUtil.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -9,7 +10,7 @@ extern "C" {
 
 typedef struct OSContext OSContext;
 
-vu32 __EXIRegs[16] : 0xCC006800;
+vu32 __EXIRegs[16] AT_ADDRESS(0xCC006800);
 
 #define EXI_MEMORY_CARD_59 0x00000004
 #define EXI_MEMORY_CARD_123 0x00000008
diff --git a/include/dolphin/gx/GX.h b/include/dolphin/gx/GX.h
index 39c2ec5e4..32c35737f 100644
--- a/include/dolphin/gx/GX.h
+++ b/include/dolphin/gx/GX.h
@@ -14,6 +14,7 @@
 #include "dolphin/gx/GXTev.h"
 #include "dolphin/gx/GXTexture.h"
 #include "dolphin/gx/GXTransform.h"
+#include "dolphin/os/OSUtil.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -41,7 +42,7 @@ typedef union {
 	f64 f64;
 } PPCWGPipe;
 
-volatile PPCWGPipe GXFIFO : 0xCC008000;
+volatile PPCWGPipe GXFIFO AT_ADDRESS(0xCC008000);
 
 // Direct
 inline void GXPosition2f32(f32 x, f32 z) {
diff --git a/include/dolphin/os/OS.h b/include/dolphin/os/OS.h
index fe1ad7e9f..d37a4f3f3 100644
--- a/include/dolphin/os/OS.h
+++ b/include/dolphin/os/OS.h
@@ -24,6 +24,7 @@
 #include "dolphin/os/OSSync.h"
 #include "dolphin/os/OSThread.h"
 #include "dolphin/os/OSTime.h"
+#include "dolphin/os/OSUtil.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -59,19 +60,19 @@ extern "C" {
 #define OS_CONSOLE_PC_EMULATOR 0x10000001
 #define OS_CONSOLE_EMULATOR 0x10000000
 
-volatile u16 __OSDeviceCode : 0x800030E6;
+volatile u16 __OSDeviceCode AT_ADDRESS(0x800030E6);
 
-volatile u32 OS_PI_INTR_CAUSE : 0xCC003000;
-volatile u32 OS_PI_INTR_MASK : 0xCC003004;
+volatile u32 OS_PI_INTR_CAUSE AT_ADDRESS(0xCC003000);
+volatile u32 OS_PI_INTR_MASK AT_ADDRESS(0xCC003004);
 
-volatile u16 OS_MI_INTR_MASK : 0xCC00401C;
+volatile u16 OS_MI_INTR_MASK AT_ADDRESS(0xCC00401C);
 
-volatile u16 OS_DSP_DMA_ADDR_HI : 0xCC005030;
-volatile u16 OS_DSP_DMA_ADDR_LO : 0xCC005032;
-volatile u16 OS_DSP_INTR_MASK : 0xCC00500A;
+volatile u16 OS_DSP_DMA_ADDR_HI AT_ADDRESS(0xCC005030);
+volatile u16 OS_DSP_DMA_ADDR_LO AT_ADDRESS(0xCC005032);
+volatile u16 OS_DSP_INTR_MASK AT_ADDRESS(0xCC00500A);
 
-volatile u16 OS_ARAM_DMA_ADDR_HI : 0xCC005020;
-volatile u16 OS_ARAM_DMA_ADDR_LO : 0xCC005022;
+volatile u16 OS_ARAM_DMA_ADDR_HI AT_ADDRESS(0xCC005020);
+volatile u16 OS_ARAM_DMA_ADDR_LO AT_ADDRESS(0xCC005022);
 
 BOOL OSIsThreadSuspended(OSThread* thread);
 
@@ -89,8 +90,8 @@ extern u8 __OSReport_enable;
 
 extern BOOL __OSIsGcam;
 
-extern u32 BOOT_REGION_START : 0x812FDFF0;
-extern u32 BOOT_REGION_END : 0x812FDFEC;
+extern u32 BOOT_REGION_START AT_ADDRESS(0x812FDFF0);
+extern u32 BOOT_REGION_END AT_ADDRESS(0x812FDFEC);
 
 void OSReportInit__Fv(void);  // needed for inline asm
 
diff --git a/include/dolphin/os/OSContext.h b/include/dolphin/os/OSContext.h
index 78562a353..35af16433 100644
--- a/include/dolphin/os/OSContext.h
+++ b/include/dolphin/os/OSContext.h
@@ -2,6 +2,7 @@
 #define OSCONTEXT_H
 
 #include "dolphin/types.h"
+#include "dolphin/os/OSUtil.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -151,8 +152,8 @@ typedef struct OSContext {
     /* 0x1C4 */ f64 ps[32];
 } OSContext;
 
-OSContext* OS_CURRENT_CONTEXT : 0x800000D4;
-OSContext* OS_CURRENT_FPU_CONTEXT : 0x800000D8;
+OSContext* OS_CURRENT_CONTEXT AT_ADDRESS(0x800000D4);
+OSContext* OS_CURRENT_FPU_CONTEXT AT_ADDRESS(0x800000D8);
 
 void __OSLoadFPUContext(void);
 void __OSSaveFPUContext(s32 unused0, s32 unused1, OSContext* context);
diff --git a/include/dolphin/os/OSLink.h b/include/dolphin/os/OSLink.h
index 55e63d5e2..f344c9bc1 100644
--- a/include/dolphin/os/OSLink.h
+++ b/include/dolphin/os/OSLink.h
@@ -1,6 +1,7 @@
 #ifndef OSLINK_H
 #define OSLINK_H
 
+#include "dolphin/os/OSUtil.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -18,8 +19,8 @@ typedef struct OSSectionInfo OSSectionInfo;
 typedef struct OSImportInfo OSImportInfo;
 typedef struct OSRel OSRel;
 
-OSModuleQueue __OSModuleList : 0x800030C8;
-void* __OSStringTable : 0x800030D0;
+OSModuleQueue __OSModuleList AT_ADDRESS(0x800030C8);
+void* __OSStringTable AT_ADDRESS(0x800030D0);
 
 struct OSModuleQueue {
     OSModuleInfo* head;
diff --git a/include/dolphin/os/OSReset.h b/include/dolphin/os/OSReset.h
index 54678e53d..81f0904ff 100644
--- a/include/dolphin/os/OSReset.h
+++ b/include/dolphin/os/OSReset.h
@@ -2,12 +2,13 @@
 #define OSRESET_H
 
 #include "dolphin/types.h"
+#include "dolphin/os/OSUtil.h"
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-vu32 __PIRegs[12] : 0xCC003000;
+vu32 __PIRegs[12] AT_ADDRESS(0xCC003000);
 
 #define OS_RESETCODE_RESTART 0x80000000
 #define OS_RESETCODE_SYSTEM 0x40000000
diff --git a/include/dolphin/os/OSThread.h b/include/dolphin/os/OSThread.h
index f13bc3479..af9ac6b23 100644
--- a/include/dolphin/os/OSThread.h
+++ b/include/dolphin/os/OSThread.h
@@ -2,6 +2,7 @@
 #define OSTHREAD_H
 
 #include "dolphin/os/OSContext.h"
+#include "dolphin/os/OSUtil.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -75,8 +76,8 @@ struct OSThread {
 
 typedef void (*OSSwitchThreadCallback)(OSThread* from, OSThread* to);
 
-OSThreadQueue OS_THREAD_QUEUE : 0x800000DC;
-OSThread* OS_CURRENT_THREAD : 0x800000E4;
+OSThreadQueue OS_THREAD_QUEUE AT_ADDRESS(0x800000DC);
+OSThread* OS_CURRENT_THREAD AT_ADDRESS(0x800000E4);
 
 static void DefaultSwitchThreadCallback(OSThread* from, OSThread* to);
 OSSwitchThreadCallback OSSetSwitchThreadCallback(OSSwitchThreadCallback func);
diff --git a/include/dolphin/os/OSTime.h b/include/dolphin/os/OSTime.h
index c0df3585f..36f106a5e 100644
--- a/include/dolphin/os/OSTime.h
+++ b/include/dolphin/os/OSTime.h
@@ -2,6 +2,7 @@
 #define OSTIME_H
 
 #include "dolphin/types.h"
+#include "dolphin/os/OSUtil.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -10,7 +11,7 @@ extern "C" {
 typedef s64 OSTime;
 typedef u32 OSTick;
 
-OSTime OS_SYSTEM_TIME : 0x800030D8;
+OSTime OS_SYSTEM_TIME AT_ADDRESS(0x800030D8);
 
 typedef struct OSCalendarTime {
     /* 0x00 */ s32 seconds;
@@ -32,7 +33,7 @@ OSTime __OSTimeToSystemTime(OSTime time);
 void GetDates(s32 days, OSCalendarTime* ct);
 void OSTicksToCalendarTime(OSTime ticks, OSCalendarTime* ct);
 
-extern u32 __OSBusClock : 0x800000F8;
+extern u32 __OSBusClock AT_ADDRESS(0x800000F8);
 
 #define OS_BUS_CLOCK (__OSBusClock)
 #define OS_CORE_CLOCK (*(u32*)0x800000FC)
diff --git a/include/dolphin/os/OSUtil.h b/include/dolphin/os/OSUtil.h
new file mode 100644
index 000000000..e565be714
--- /dev/null
+++ b/include/dolphin/os/OSUtil.h
@@ -0,0 +1,21 @@
+#ifndef _DOLPHIN_OS_OSUTIL_H
+#define _DOLPHIN_OS_OSUTIL_H
+
+#include "dolphin/types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif // ifdef __cplusplus
+
+// Macro to make it more clear when something is an address, and to prevent intellisense errors.
+#ifdef __MWERKS__
+#define AT_ADDRESS(addr) : (addr)
+#else
+#define AT_ADDRESS(addr)
+#endif
+
+#ifdef __cplusplus
+};
+#endif // ifdef __cplusplus
+
+#endif
diff --git a/include/dolphin/os/__start.h b/include/dolphin/os/__start.h
index 3ce610ce1..bf4c01124 100644
--- a/include/dolphin/os/__start.h
+++ b/include/dolphin/os/__start.h
@@ -2,6 +2,7 @@
 #define __START_H
 
 #include "global.h"
+#include "dolphin/os/OSUtil.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -21,7 +22,7 @@ extern "C" {
 
 extern void InitMetroTRK();
 
-u16 Pad3Button : PAD3_BUTTON_ADDR;
+u16 Pad3Button AT_ADDRESS(PAD3_BUTTON_ADDR);
 
 extern int main(int argc, char* argv[]);
 extern void exit(int);
diff --git a/include/dolphin/si/SIBios.h b/include/dolphin/si/SIBios.h
index b5f10067d..2e8d19de4 100644
--- a/include/dolphin/si/SIBios.h
+++ b/include/dolphin/si/SIBios.h
@@ -3,6 +3,7 @@
 
 #include "dolphin/os/OSInterrupt.h"
 #include "dolphin/os/OSTime.h"
+#include "dolphin/os/OSUtil.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -121,7 +122,7 @@ u32 SIGetType(s32 chan);
 u32 SIGetTypeAsync(s32 chan, SITypeAndStatusCallback callback);
 u32 SIProbe(s32 chan);
 
-vu32 __SIRegs[64] : 0xCC006400;
+vu32 __SIRegs[64] AT_ADDRESS(0xCC006400);
 
 #ifdef __cplusplus
 }
diff --git a/include/dolphin/vi/vi.h b/include/dolphin/vi/vi.h
index f233b3024..901879e5e 100644
--- a/include/dolphin/vi/vi.h
+++ b/include/dolphin/vi/vi.h
@@ -2,6 +2,7 @@
 #define VI_H
 
 #include "dolphin/types.h"
+#include "dolphin/os/OSUtil.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -54,7 +55,7 @@ void VISetBlack(BOOL);
 u32 VIGetRetraceCount();
 u32 VIGetDTVStatus();
 
-vu16 __VIRegs[59] : 0xCC002000;
+vu16 __VIRegs[59] AT_ADDRESS(0xCC002000);
 
 #ifdef __cplusplus
 };
diff --git a/src/dolphin/os/OS.c b/src/dolphin/os/OS.c
index 8e6a1a744..3aaa7cdaa 100644
--- a/src/dolphin/os/OS.c
+++ b/src/dolphin/os/OS.c
@@ -628,7 +628,7 @@ asm void __OSPSInit(void){
     // clang-format on
 }
 
-vu32 __DIRegs[16] : 0xCC006000;
+vu32 __DIRegs[16] AT_ADDRESS(0xCC006000);
 #define DI_CONFIG_IDX 0x9
 #define DI_CONFIG_CONFIG_MASK 0xFF
 
diff --git a/src/dolphin/os/OSContext.c b/src/dolphin/os/OSContext.c
index f41d4aff2..6fa8f0e82 100644
--- a/src/dolphin/os/OSContext.c
+++ b/src/dolphin/os/OSContext.c
@@ -1,9 +1,10 @@
 #include "dolphin/os/OSContext.h"
 #include "dolphin/db/db.h"
 #include "dolphin/os/OS.h"
+#include "dolphin/os/OSUtil.h"
 
-volatile OSContext* __OSCurrentContext : (OS_BASE_CACHED | 0x00D4);
-volatile OSContext* __OSFPUContext : (OS_BASE_CACHED | 0x00D8);
+volatile OSContext* __OSCurrentContext AT_ADDRESS(OS_BASE_CACHED | 0x00D4);
+volatile OSContext* __OSFPUContext AT_ADDRESS(OS_BASE_CACHED | 0x00D8);
 
 asm void __OSLoadFPUContext(void) {
     // clang-format off
diff --git a/src/dolphin/os/OSError.c b/src/dolphin/os/OSError.c
index 53bb300c6..4e184693f 100644
--- a/src/dolphin/os/OSError.c
+++ b/src/dolphin/os/OSError.c
@@ -4,9 +4,9 @@
 #include "dolphin/dvd/dvdlow.h"
 #include "dolphin/os/OS.h"
 
-OSThread* __OSCurrentThread : (OS_BASE_CACHED | 0x00E4);
-OSThreadQueue __OSActiveThreadQueue : (OS_BASE_CACHED | 0x00DC);
-volatile OSContext* __OSFPUContext : (OS_BASE_CACHED | 0x00D8);
+OSThread* __OSCurrentThread AT_ADDRESS(OS_BASE_CACHED | 0x00E4);
+OSThreadQueue __OSActiveThreadQueue AT_ADDRESS(OS_BASE_CACHED | 0x00DC);
+volatile OSContext* __OSFPUContext AT_ADDRESS(OS_BASE_CACHED | 0x00D8);
 
 extern volatile u32 __OSLastInterruptSrr0;
 extern volatile s16 __OSLastInterrupt;
diff --git a/src/dolphin/os/OSInterrupt.c b/src/dolphin/os/OSInterrupt.c
index 711bfcce5..edc2522aa 100644
--- a/src/dolphin/os/OSInterrupt.c
+++ b/src/dolphin/os/OSInterrupt.c
@@ -3,8 +3,8 @@
 #include "dolphin/exi/EXIBios.h"
 #include "dolphin/os/OS.h"
 
-vu32 __PIRegs[12] : 0xCC003000;
-vu16 __MEMRegs[64] : 0xCC004000;
+vu32 __PIRegs[12] AT_ADDRESS(0xCC003000);
+vu16 __MEMRegs[64] AT_ADDRESS(0xCC004000);
 
 asm BOOL OSDisableInterrupts(void) {
     // clang-format off
diff --git a/src/dolphin/os/OSLink.c b/src/dolphin/os/OSLink.c
index e0e987d86..6acb67921 100644
--- a/src/dolphin/os/OSLink.c
+++ b/src/dolphin/os/OSLink.c
@@ -107,7 +107,7 @@
             __prev->link.next = __next;                                                            \
     } while (0)
 
-OSModuleQueue __OSModuleInfoList : (OS_BASE_CACHED | 0x30C8);
+OSModuleQueue __OSModuleInfoList AT_ADDRESS(OS_BASE_CACHED | 0x30C8);
 
 #pragma dont_inline on
 
diff --git a/src/dolphin/os/OSMemory.c b/src/dolphin/os/OSMemory.c
index a91576ed4..34c28c150 100644
--- a/src/dolphin/os/OSMemory.c
+++ b/src/dolphin/os/OSMemory.c
@@ -4,7 +4,7 @@
 #define TRUNC(n, a) (((u32)(n)) & ~((a)-1))
 #define ROUND(n, a) (((u32)(n) + (a)-1) & ~((a)-1))
 
-vu16 __MEMRegs[64] : 0xCC004000;
+vu16 __MEMRegs[64] AT_ADDRESS(0xCC004000);
 
 extern OSErrorHandlerEx __OSErrorTable[16];
 
diff --git a/src/dolphin/os/OSReboot.c b/src/dolphin/os/OSReboot.c
index 91f763f12..92879288b 100644
--- a/src/dolphin/os/OSReboot.c
+++ b/src/dolphin/os/OSReboot.c
@@ -1,14 +1,14 @@
-#include "dolphin/os/Os.h"
+#include "dolphin/os/OS.h"
 #include "dolphin/os/OSReboot.h"
 
 static void* SaveStart = NULL;
 static void* SaveEnd = NULL;
 static volatile BOOL Prepared;
 
-extern u32 OS_RESET_CODE : 0x800030F0;
-extern u8 OS_REBOOT_BOOL : 0x800030E2; // unknown function, set to true by __OSReboot
-extern u32 UNK_817FFFF8 : 0x817FFFF8;
-extern u32 UNK_817FFFFC : 0x817FFFFC;
+extern u32 OS_RESET_CODE AT_ADDRESS(0x800030F0);
+extern u8 OS_REBOOT_BOOL AT_ADDRESS(0x800030E2); // unknown function, set to true by __OSReboot
+extern u32 UNK_817FFFF8 AT_ADDRESS(0x817FFFF8);
+extern u32 UNK_817FFFFC AT_ADDRESS(0x817FFFFC);
 
 #define OS_BOOTROM_ADDR 0x81300000
 
diff --git a/src/dolphin/os/OSReset.c b/src/dolphin/os/OSReset.c
index be39a12f3..4f131b1a5 100644
--- a/src/dolphin/os/OSReset.c
+++ b/src/dolphin/os/OSReset.c
@@ -1,8 +1,8 @@
 #include "dolphin/os/OSReset.h"
 #include "dolphin/os/OS.h"
 
-vu16 __VIRegs[59] : 0xCC002000;
-OSThreadQueue __OSActiveThreadQueue : (OS_BASE_CACHED | 0x00DC);
+vu16 __VIRegs[59] AT_ADDRESS(0xCC002000);
+OSThreadQueue __OSActiveThreadQueue AT_ADDRESS(OS_BASE_CACHED | 0x00DC);
 
 static OSResetQueue ResetFunctionQueue;
 
diff --git a/src/dolphin/os/OSResetSW.c b/src/dolphin/os/OSResetSW.c
index 386bc20db..34b47726f 100644
--- a/src/dolphin/os/OSResetSW.c
+++ b/src/dolphin/os/OSResetSW.c
@@ -2,7 +2,7 @@
 #include "dolphin/os/OS.h"
 #include "dolphin/os/OSReset.h"
 
-u8 GameChoice : (OS_BASE_CACHED | 0x30E3);
+u8 GameChoice AT_ADDRESS(OS_BASE_CACHED | 0x30E3);
 
 void __OSResetSWInterruptHandler(__OSInterrupt interrupt, OSContext* context);
 
diff --git a/src/dolphin/os/OSThread.c b/src/dolphin/os/OSThread.c
index a420c7496..a5c0e3238 100644
--- a/src/dolphin/os/OSThread.c
+++ b/src/dolphin/os/OSThread.c
@@ -7,10 +7,10 @@
 #include "dolphin/os/OSThread.h"
 #include "dolphin/os/OS.h"
 
-OSThread* __OSCurrentThread : OS_BASE_CACHED + 0x00E4;
-OSThreadQueue __OSActiveThreadQueue : OS_BASE_CACHED + 0x00DC;
-volatile OSContext __OSCurrentContext : OS_BASE_CACHED + 0x00D4;
-volatile OSContext* __OSFPUContext : OS_BASE_CACHED + 0x00D8;
+OSThread* __OSCurrentThread AT_ADDRESS(OS_BASE_CACHED + 0x00E4);
+OSThreadQueue __OSActiveThreadQueue AT_ADDRESS(OS_BASE_CACHED + 0x00DC);
+volatile OSContext __OSCurrentContext AT_ADDRESS(OS_BASE_CACHED + 0x00D4);
+volatile OSContext* __OSFPUContext AT_ADDRESS(OS_BASE_CACHED + 0x00D8);
 
 #define AddTail(queue, thread, link)                                                               \
     do {                                                                                           \