Port for SunOS 5.10 for amd64

Below is a hack for SunOS 5.10 when running in 64 bit mode on an
AMD64 processor (using gcc 3.x with -m64). I simply copied my earlier
hack for OpenBSD/AMD64, so this might not be the right way to do
it.  Can someone please check this? Thanks!


--- md.h	Sat Jan 29 21:22:00 2005
+++ /tmp/sm-9/md.h	Sun Apr 24 18:27:44 2005
@@ -554,6 +554,13 @@
   (_thread)->context[4] = (long) (_sp);      \
   (_thread)->context[5] = (long) _main;      \
   ST_END_MACRO
+#elif defined(__amd64__)
+#define MD_INIT_CONTEXT(_thread, _sp, _main)   \
+  ST_BEGIN_MACRO                               \
+  if (MD_SETJMP((_thread)->context))           \
+    _main();                                   \
+  (_thread)->context[6] = (long) (_sp); \
+  ST_END_MACRO
 #else
 #error Unknown CPU architecture
 #endif


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