h3, fxglide.h, gthread.c: copy over gcc compatibility changes from h5.

glide3x/h3/glide3/src/fxglide.h

@@ -1891,13 +1891,21 @@ _grSstVRetraceOn(void);
 #define WNT_TEB_TLS_OFFSET              0xE10
 #define WNT_TLS_INDEX_TO_OFFSET(i)      ((i)*sizeof(DWORD)+WNT_TEB_TLS_OFFSET)
 
-#define __GR_GET_TLSC_VALUE() \
-__asm { \
-   __asm mov eax, DWORD PTR fs:[WNT_TEB_PTR] \
-   __asm add eax, DWORD PTR _GlideRoot.tlsOffset \
-   __asm mov eax, DWORD PTR [eax] \
+#ifdef __GNUC__
+
+extern __inline FxU32 getThreadValueFast (void)
+{
+ FxU32 t;
+ __asm __volatile (" \
+       mov %%fs:(%0), %%eax; \
+       add %1, %%eax; \
+       mov (%%eax), %%eax; \
+ ":"=a"(t):"i"(WNT_TEB_PTR), "g"(_GlideRoot.tlsOffset));
+ return t;
 }
 
+#else  /* __GNUC__ */
+
 #pragma warning (4:4035)        /* No return value */
 __inline FxU32
 getThreadValueFast() {
@@ -1907,7 +1915,7 @@ getThreadValueFast() {
     __asm mov eax, DWORD PTR [eax] 
   }
 }
-#pragma warning (3:4035)
+#endif /* __GNUC__ */
 #endif
 
 #if (GLIDE_PLATFORM & GLIDE_OS_MACOS)

glide3x/h3/glide3/src/gthread.c

@@ -63,19 +63,11 @@ void setThreadValue( unsigned long value ) {
     TlsSetValue( _GlideRoot.tlsIndex, (void*)value );
 }
 
-#pragma warning (4:4035)        /* No return value */
-unsigned long getThreadValueSLOW( void ) {
+unsigned long getThreadValueSLOW( void )
+{
     GR_CHECK_F( "getThreadValue", !threadInit, "Thread storage not initialized\n" );
 
-#if 0
-    return (FxU32)TlsGetValue( _GlideRoot.tlsIndex );
-#elif 1
-    __GR_GET_TLSC_VALUE();
-#else
-    __asm {
-      __asm mov esi, DWORD PTR fs:[WNT_TEB_PTR] 
-      __asm add esi, DWORD PTR _GlideRoot.tlsOffset \
-     __asm mov eax, DWORD PTR [esi] \
+    return getThreadValueFast();
 }
 
 #endif