Initial NESemu

Former-commit-id: 454723c7de88d8848a29ac914d3ca43916eeadeb

configure.py

@@ -233,9 +233,17 @@ cflags_musyx_debug = [
 
 # REL flags
 cflags_rel = [
-    *cflags_base,
+    "-proc gecko",
+    "-fp hard",
+    "-nodefaults",
+    "-nosyspath",
+    "-i include",
+    "-i libc",
+    "-O0",
     "-sdata 0",
     "-sdata2 0",
+    "-str noreuse",
+    "-Cpp_exceptions off"
 ]
 
 config.linker_version = "GC/1.3.2"
@@ -283,7 +291,7 @@ def MusyX(objects, mw_version="GC/1.3.2", debug=False, major=2, minor=0, patch=0
 def Rel(lib_name, objects):
     return {
         "lib": lib_name,
-        "mw_version": "Wii/1.3",
+        "mw_version": "GC/1.3.2",
         "cflags": cflags_rel,
         "host": True,
         "objects": objects,
@@ -1294,6 +1302,15 @@ config.libs = [
             Object(Matching, "Dolphin/GBA/GBAKey.c"),
         ],
     ),
+    Rel(
+        "NESemuP",
+        [
+            Object(
+                Matching,
+                "NESemu/modwrapper.c",
+                ),
+        ],
+    ),
 ]
 
 if args.mode == "configure":

extern/musyx

@@ -1 +1 @@
-Subproject commit 28424c828c8c462e26953ded3b08e6f3a0c8e489
+Subproject commit ddfad60c3e4fede55479c744a1c70081e0d6cd12

include/NESemu/modwrapper.h

@@ -0,0 +1,27 @@
+#ifndef _MODWRAPPER_H_
+#define _MODWRAPPER_H_
+
+#include "types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void _prolog();
+void _epilog();
+void _unresolved();
+
+// User functions
+void ksNesInitModule(void);
+
+#ifdef __MWERKS__
+#define REL_EXPORT __declspec(export)
+#else
+#define REL_EXPORT
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // _MODWRAPPER_H_

include/dolphin/os/OSContext.h

@@ -162,6 +162,7 @@ u32 OSSaveContext(OSContext* context);
 void OSClearContext(OSContext* context);
 OSContext* OSGetCurrentContext();
 void OSSetCurrentContext(OSContext* context);
+u32 OSGetStackPointer();
 
 #ifdef __cplusplus
 }

src/NESemu/modwrapper.c

@@ -0,0 +1,48 @@
+#include "NESemu/modwrapper.h"
+#include "dolphin/os.h"
+
+typedef void (*voidfunctionptr)(void); // pointer to function returning void
+__declspec(section ".init") extern voidfunctionptr _ctors[];
+__declspec(section ".init") extern voidfunctionptr _dtors[];
+
+REL_EXPORT asm void _prolog(void) {
+  fralloc
+  lis r3, _ctors@ha
+  addi r0, r3, _ctors@l
+  mr r31, r0
+  b @2
+@1:
+  mtctr r12
+  bctrl
+	addi r31, r31, 0x4
+@2:
+	lwz r12, 0x0(r31)
+	cmplwi r12, 0x0
+	bne+ @1
+
+  bl ksNesInitModule
+
+  frfree
+	blr  
+}
+
+REL_EXPORT asm void _epilog(void) {
+  fralloc
+  lis r3, _dtors@ha
+  addi r0, r3, _dtors@l
+  mr r31, r0
+  b @2
+@1:
+  mtctr r12
+  bctrl
+	addi r31, r31, sizeof(voidfunctionptr)
+@2:
+	lwz r12, 0x0(r31)
+	cmplwi r12, 0x0
+	bne+ @1
+
+  frfree
+	blr  
+}
+
+REL_EXPORT void _unresolved(void) { OSPanic("modwrapper.c\0\0\0", 0x3d, "ksNesEmulator unresolved"); }