Initial gcc Support (#568)

* Added GCC

src/os/__osDequeueThread.c

@@ -1,10 +1,15 @@
 #include "libultra_internal.h"
 
-OSThreadTail __osThreadTail = {NULL, -1};
+#ifndef AVOID_UB
+OSThread *__osThreadTail = NULL;
+u32 __osTest = -1;
 OSThread *__osRunQueue = (OSThread *) &__osThreadTail;
 OSThread *__osActiveQueue = (OSThread *) &__osThreadTail;
 OSThread *__osRunningThread = NULL;
 OSThread *__osFaultedThread = NULL;
+#else
+OSThread_ListHead __osThreadTail_fix = {NULL, -1, (OSThread *) &__osThreadTail_fix, (OSThread *) &__osThreadTail_fix, NULL, 0};
+#endif
 
 void __osDequeueThread(OSThread **queue, OSThread *thread) {
     register OSThread **a2;

src/os/__osLeoInterrupt.c

@@ -1,8 +1,8 @@
 #include "ultra64.h"
 #include "osint.h"
 #include "piint.h"
+#include "libultra_internal.h"
 
-extern OSThread *__osRunQueue;
 static void __osLeoResume(void);
 static void __osLeoAbnormalResume(void);
 extern u8 leoDiskStack[OS_PIM_STACKSIZE]; //technically should have a OS_LEO_STACKSIZE or something..

src/os/libultra_internal.h

@@ -1,6 +1,7 @@
 #ifndef _LIBULTRA_INTERNAL_H_
 #define _LIBULTRA_INTERNAL_H_
 #include <ultra64.h>
+#include <PR/os_thread.h>
 #include "macros.h"
 
 typedef struct __OSEventState
@@ -15,15 +16,41 @@ typedef struct __osThreadTail
     OSPri priority;
 } OSThreadTail;
 
+/*
+ * This define is needed because the original definitions in __osDequeueThread.c are declared
+ * seperately instead of part of a single struct, however some code alises over this memory
+ * assuming a unified structure. To fix this, we declare the full type here and then alias the
+ * symbol names to the correct members in AVOID_UB.
+ */
+typedef struct
+{
+    /*0x00*/ struct OSThread_s *next;
+    /*0x04*/ OSPri priority;
+    /*0x08*/ struct OSThread_s *queue;
+    /*0x0C*/ struct OSThread_s *tlnext;
+    /*0x10*/ struct OSThread_s *unk10;
+    /*0x14*/ u32 unk14;
+} OSThread_ListHead;
+#ifdef AVOID_UB
+
+// Now fix the symbols to the new one.
+extern OSThread_ListHead __osThreadTail_fix;
+
+#define __osThreadTail __osThreadTail_fix.next
+#define D_80334894 __osThreadTail_fix.priority
+#define __osRunQueue __osThreadTail_fix.queue
+#define __osActiveQueue __osThreadTail_fix.tlnext
+#define __osRunningThread __osThreadTail_fix.unk10
+#else
 // Original OSThread_ListHead definitions
-extern OSThreadTail __osThreadTail;
+extern OSThread *__osThreadTail;
 extern OSThread *__osActiveQueue;
 extern OSThread *__osRunQueue;
 extern OSThread *__osRunningThread;
-
+#endif
 
 // Original EEPROM definitions
-extern ALIGNED8 u32 D_80365E00[15];
+extern u32 D_80365E00[15];
 extern u32 D_80365E3C;
 
 typedef struct {

src/os/math/llmuldiv.c

@@ -7,7 +7,7 @@ unsigned long long __ull_rem(unsigned long long a0, unsigned long long a1)
     return a0 % a1;
 }
 unsigned long long __ull_div(unsigned long long a0, unsigned long long a1)
-{ 
+{
     return a0 / a1;
 }
 
@@ -34,19 +34,19 @@ unsigned long long __ll_mul(unsigned long long a0, unsigned long long a1)
 void __ull_divremi(unsigned long long *div, unsigned long long *rem, unsigned long long a2, unsigned short a3)
 {
     *div = a2 / a3;
-    *rem = a2 % a3; 
-} 
+    *rem = a2 % a3;
+}
 long long __ll_mod(long long a0, long long a1)
 {
     long long tmp = a0 % a1;
     if ((tmp < 0 && a1 > 0) || (tmp > 0 && a1 < 0))
     {
 
-        tmp += a1; 
+        tmp += a1;
     }
     return tmp;
 }
- 
+
 long long __ll_rshift(long long a0, long long a1)
 {
     return a0 >> a1;

src/os/osCreateThread.c

@@ -1,7 +1,6 @@
 #include "libultra_internal.h"
 
 void __osCleanupThread(void);
-extern OSThread *__osActiveQueue;
 
 
 // Don't warn about pointer->u64 cast

src/os/osEepromLongWrite.c

@@ -1,8 +1,7 @@
 #include "libultra_internal.h"
+#include "controller.h"
 
-extern u64 osClockRate;
 extern u8 D_80365D20;
-extern u8 _osContNumControllers;
 extern OSTimer D_80196548;
 extern OSMesgQueue _osContMesgQueue;
 extern OSMesg _osContMesgBuff[4];

src/os/osEepromRead.c

@@ -1,30 +1,11 @@
 #include "libultra_internal.h"
-#include "controller.h"
 #include "macros.h"
+#include "controller.h"
 
-extern u8 __osContLastCmd;
+extern u8 _osLastSentSiCmd;
 
 extern OSPifRam __osEepPifRam;
 
-typedef struct {
-    u8 unk00;
-    u8 unk01;
-    u8 unk02;
-    u8 unk03;
-    u8 unk04;
-    u8 unk05;
-    u8 unk06;
-    u8 unk07;
-} unkStruct3;
-
-typedef struct {
-    u8 unk00;
-    u8 unk01;
-    u8 unk02;
-    u8 unk03;
-    unkStruct3 unk04;
-} unkStruct2;
-
 s32 __osEepStatus(OSMesgQueue *, OSContStatus *);
 void __osPackEepReadData(u8);
 

src/os/osEepromWrite.c

@@ -7,25 +7,6 @@ OSPifRam __osEepPifRam;
 
 extern u8 __osContLastCmd;
 
-typedef struct {
-    u8 unk00;
-    u8 unk01;
-    u8 unk02;
-    u8 unk03;
-    u8 unk04;
-    u8 unk05;
-    u8 unk06;
-    u8 unk07;
-} unkStruct3;
-
-typedef struct {
-    u8 unk00;
-    u8 unk01;
-    u8 unk02;
-    u8 unk03;
-    unkStruct3 unk04;
-} unkStruct2;
-
 s32 __osEepStatus(OSMesgQueue *, OSContStatus *);
 void __osPackEepWriteData(u8, u8 *);
 

src/os/osint.h

@@ -1,6 +1,7 @@
 #ifndef _OSINT_H
 #define _OSINT_H
 #include "libultra_internal.h"
+#include <macros.h>
 
 //maybe should be in exceptasm.h?
 extern void __osEnqueueAndYield(OSThread **);
@@ -15,10 +16,14 @@ extern void __osTimerInterrupt(void);
 extern u32 __osProbeTLB(void *);
 extern int     __osSpDeviceBusy(void);
 
+#ifdef AVOID_UB
+extern OSThread_ListHead __osThreadTail_fix;
+#else
 extern OSThread *__osRunningThread;
 extern OSThread *__osActiveQueue;
 extern OSThread *__osFaultedThread;
 extern OSThread *__osRunQueue;
+#endif
 
 extern OSTimer *__osTimerList;
 extern OSTimer __osBaseTimer;