Patch from http://trac.wildfiregames.com/ticket/3344
Backport from upstream https://github.com/castano/nvidia-texture-tools/commit/58617584d4d2541ff9fcfe23a9a492af86b11efb

Index: src/src/nvcore/Debug.cpp
===================================================================
--- src/src/nvcore/Debug.cpp	(revision 16870)
+++ src/src/nvcore/Debug.cpp	(working copy)
@@ -232,6 +232,9 @@
 #		elif NV_CPU_PPC
 			ucontext_t * ucp = (ucontext_t *)secret;
 			return (void *) ucp->uc_mcontext.regs->nip;
+#		elif NV_CPU_AARCH64
+			ucontext_t * ucp = (ucontext_t *)secret;
+			return (void *) ucp->uc_mcontext.pc;
 #		endif
 #	endif
 		
Index: src/src/nvcore/nvcore.h
===================================================================
--- src/src/nvcore/nvcore.h	(revision 16870)
+++ src/src/nvcore/nvcore.h	(working copy)
@@ -68,6 +68,7 @@
 // NV_CPU_X86_64
 // NV_CPU_PPC
 // NV_CPU_ARM
+// NV_CPU_AARCH64
 
 #define NV_CPU_STRING 	POSH_CPU_STRING
 
@@ -79,6 +80,8 @@
 #	define NV_CPU_PPC 1
 #elif defined POSH_CPU_STRONGARM
 #	define NV_CPU_ARM 1
+#elif defined POSH_CPU_AARCH64
+#	define NV_CPU_AARCH64 1
 #else
 #	error "Unsupported CPU"
 #endif
Index: src/src/nvcore/poshlib/posh.h
===================================================================
--- src/src/nvcore/poshlib/posh.h	(revision 16870)
+++ src/src/nvcore/poshlib/posh.h	(working copy)
@@ -485,6 +485,11 @@
 #  define POSH_CPU_STRING "ARM"
 #endif
 
+#if defined __aarch64__
+#  define POSH_CPU_AARCH64 1
+#  define POSH_CPU_STRING "ARM64"
+#endif
+
 #if defined mips || defined __mips__ || defined __MIPS__ || defined _MIPS
 #  define POSH_CPU_MIPS 1 
 #  if defined _R5900
@@ -658,7 +663,7 @@
 ** the MIPS series, so we have to be careful about those.
 ** ----------------------------------------------------------------------------
 */
-#if defined POSH_CPU_X86 || defined POSH_CPU_AXP || defined POSH_CPU_STRONGARM || defined POSH_OS_WIN32 || defined POSH_OS_WINCE || defined __MIPSEL__
+#if defined POSH_CPU_X86 || defined POSH_CPU_AXP || defined POSH_CPU_STRONGARM || defined POSH_CPU_AARCH64 || defined POSH_OS_WIN32 || defined POSH_OS_WINCE || defined __MIPSEL__
 #  define POSH_ENDIAN_STRING "little"
 #  define POSH_LITTLE_ENDIAN 1
 #else
Index: libraries/source/spidermonkey/mozjs-31.2.0.rc0.tar.bz2
===================================================================
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