diff -auNr firefox-102.9.0/build/autoconf/config.guess firefox-102.9.0.sw/build/autoconf/config.guess
--- firefox-102.9.0/build/autoconf/config.guess	2023-03-10 07:55:11.000000000 +0800
+++ firefox-102.9.0.sw/build/autoconf/config.guess	2024-12-06 16:49:07.723043262 +0800
@@ -1143,6 +1143,9 @@
     sparc:Linux:*:* | sparc64:Linux:*:*)
 	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
 	;;
+    sw_64*:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	exit ;;
     tile*:Linux:*:*)
 	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
 	;;
diff -auNr firefox-102.9.0/build/autoconf/config.sub firefox-102.9.0.sw/build/autoconf/config.sub
--- firefox-102.9.0/build/autoconf/config.sub	2023-03-10 07:55:11.000000000 +0800
+++ firefox-102.9.0.sw/build/autoconf/config.sub	2024-12-06 16:49:36.643213205 +0800
@@ -1267,6 +1267,7 @@
 			| sparclite \
 			| sparcv8 | sparcv9 | sparcv9b | sparcv9v | sv1 | sx* \
 			| spu \
+                        | sw_64 \
 			| tahoe \
 			| thumbv7* \
 			| tic30 | tic4x | tic54x | tic55x | tic6x | tic80 \
diff -auNr firefox-102.9.0/build/moz.configure/init.configure firefox-102.9.0.sw/build/moz.configure/init.configure
--- firefox-102.9.0/build/moz.configure/init.configure	2023-03-10 07:59:36.000000000 +0800
+++ firefox-102.9.0.sw/build/moz.configure/init.configure	2024-12-06 17:09:29.990869176 +0800
@@ -530,6 +530,9 @@
     elif cpu.startswith("loongarch64"):
         canonical_cpu = "loongarch64"
         endianness = "little"
+    elif cpu in ("sw_64"):
+        canonical_cpu = "sw_64"
+        endianness = "little"
     elif cpu == "sh4":
         canonical_cpu = "sh4"
         endianness = "little"
diff -auNr firefox-102.9.0/intl/icu/source/config.guess firefox-102.9.0.sw/intl/icu/source/config.guess
--- firefox-102.9.0/intl/icu/source/config.guess	2023-03-10 07:55:13.000000000 +0800
+++ firefox-102.9.0.sw/intl/icu/source/config.guess	2024-12-06 16:52:54.634376784 +0800
@@ -1029,6 +1029,9 @@
     sparc:Linux:*:* | sparc64:Linux:*:*)
 	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
 	exit ;;
+    sw_64*:Linux:*:*)
+        echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+        exit ;;
     tile*:Linux:*:*)
 	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
 	exit ;;
diff -auNr firefox-102.9.0/intl/icu/source/config.sub firefox-102.9.0.sw/intl/icu/source/config.sub
--- firefox-102.9.0/intl/icu/source/config.sub	2023-03-10 07:55:13.000000000 +0800
+++ firefox-102.9.0.sw/intl/icu/source/config.sub	2024-12-06 16:53:08.084455832 +0800
@@ -308,6 +308,7 @@
 	| sparc | sparc64 | sparc64b | sparc64v | sparc86x | sparclet | sparclite \
 	| sparcv8 | sparcv9 | sparcv9b | sparcv9v \
 	| spu \
+        | sw_64 \
 	| tahoe | tic4x | tic54x | tic55x | tic6x | tic80 | tron \
 	| ubicom32 \
 	| v850 | v850e | v850e1 | v850e2 | v850es | v850e2v3 \
diff -auNr firefox-102.9.0/intl/icu/source/i18n/double-conversion-utils.h firefox-102.9.0.sw/intl/icu/source/i18n/double-conversion-utils.h
--- firefox-102.9.0/intl/icu/source/i18n/double-conversion-utils.h	2023-03-10 07:59:37.000000000 +0800
+++ firefox-102.9.0.sw/intl/icu/source/i18n/double-conversion-utils.h	2024-12-06 17:12:13.061850411 +0800
@@ -142,6 +142,7 @@
     defined(__ARMEL__) || defined(__avr32__) || defined(_M_ARM) || defined(_M_ARM64) || \
     defined(__hppa__) || defined(__ia64__) || \
     defined(__mips__) || \
+    defined(__sw_64__) || \
     defined(__loongarch__) || \
     defined(__nios2__) || defined(__ghs) || \
     defined(__powerpc__) || defined(__ppc__) || defined(__ppc64__) || \
diff -auNr firefox-102.9.0/js/moz.configure firefox-102.9.0.sw/js/moz.configure
--- firefox-102.9.0/js/moz.configure	2024-12-06 17:23:06.325903209 +0800
+++ firefox-102.9.0.sw/js/moz.configure	2024-12-06 17:14:02.142450768 +0800
@@ -251,6 +251,7 @@
 set_config("JS_CODEGEN_RISCV64", jit_codegen.riscv64)
 set_config("JS_CODEGEN_X86", jit_codegen.x86)
 set_config("JS_CODEGEN_X64", jit_codegen.x64)
+set_config('JS_CODEGEN_SW64', jit_codegen.sw_64)
 set_define("JS_CODEGEN_NONE", jit_codegen.none)
 set_define("JS_CODEGEN_ARM", jit_codegen.arm)
 set_define("JS_CODEGEN_ARM64", jit_codegen.arm64)
@@ -260,6 +261,7 @@
 set_define("JS_CODEGEN_RISCV64", jit_codegen.riscv64)
 set_define("JS_CODEGEN_X86", jit_codegen.x86)
 set_define("JS_CODEGEN_X64", jit_codegen.x64)
+set_define('JS_CODEGEN_SW64', jit_codegen.sw_64)
 
 # Profiling
 # =======================================================
diff -auNr firefox-102.9.0/js/src/jit/LIR.h firefox-102.9.0.sw/js/src/jit/LIR.h
--- firefox-102.9.0/js/src/jit/LIR.h	2024-12-06 17:23:06.185902165 +0800
+++ firefox-102.9.0.sw/js/src/jit/LIR.h	2024-12-06 17:15:13.212841942 +0800
@@ -1956,6 +1956,8 @@
 #  include "jit/loong64/LIR-loong64.h"
 #elif defined(JS_CODEGEN_RISCV64)
 #  include "jit/riscv64/LIR-riscv64.h"
+#elif defined(JS_CODEGEN_SW64)
+#  include "jit/none/LIR-none.h"
 #elif defined(JS_CODEGEN_MIPS32) || defined(JS_CODEGEN_MIPS64)
 #  if defined(JS_CODEGEN_MIPS32)
 #    include "jit/mips32/LIR-mips32.h"
diff -auNr firefox-102.9.0/memory/build/mozjemalloc.cpp firefox-102.9.0.sw/memory/build/mozjemalloc.cpp
--- firefox-102.9.0/memory/build/mozjemalloc.cpp	2023-03-10 07:59:37.000000000 +0800
+++ firefox-102.9.0.sw/memory/build/mozjemalloc.cpp	2024-12-06 17:16:27.533251012 +0800
@@ -204,7 +204,7 @@
 #ifndef MOZ_DEBUG
 #  if !defined(__ia64__) && !defined(__sparc__) && !defined(__mips__) &&       \
       !defined(__aarch64__) && !defined(__powerpc__) && !defined(XP_MACOSX) && \
-      !defined(__loongarch__)
+      !defined(__loongarch__)  && !defined(__sw_64__)
 #    define MALLOC_STATIC_PAGESIZE 1
 #  endif
 #endif
@@ -474,6 +474,8 @@
 static const size_t gPageSize = 64_KiB;
 #  elif defined(__loongarch64)
 static const size_t gPageSize = 16_KiB;
+#elif defined(__sw_64__)
+static const size_t gPageSize = 8_KiB;
 #  else
 static const size_t gPageSize = 4_KiB;
 #  endif
diff -auNr firefox-102.9.0/mfbt/double-conversion/double-conversion/utils.h firefox-102.9.0.sw/mfbt/double-conversion/double-conversion/utils.h
--- firefox-102.9.0/mfbt/double-conversion/double-conversion/utils.h	2023-03-10 07:59:37.000000000 +0800
+++ firefox-102.9.0.sw/mfbt/double-conversion/double-conversion/utils.h	2024-12-06 17:05:09.579103919 +0800
@@ -116,7 +116,7 @@
     defined(__powerpc__) || defined(__ppc__) || defined(__ppc64__) || \
     defined(_POWER) || defined(_ARCH_PPC) || defined(_ARCH_PPC64) || \
     defined(__sparc__) || defined(__sparc) || defined(__s390__) || \
-    defined(__SH4__) || defined(__alpha__) || \
+    defined(__SH4__) || defined(__alpha__) || defined(__sw_64__) || defined(__sw_64) || \
     defined(_MIPS_ARCH_MIPS32R2) || defined(__ARMEB__) ||\
     defined(__AARCH64EL__) || defined(__aarch64__) || defined(__AARCH64EB__) || \
     defined(__riscv) || defined(__e2k__) || \
diff -auNr firefox-102.9.0/mfbt/tests/TestPoisonArea.cpp firefox-102.9.0.sw/mfbt/tests/TestPoisonArea.cpp
--- firefox-102.9.0/mfbt/tests/TestPoisonArea.cpp	2023-03-10 07:59:37.000000000 +0800
+++ firefox-102.9.0.sw/mfbt/tests/TestPoisonArea.cpp	2024-12-06 17:04:53.498994916 +0800
@@ -168,6 +168,9 @@
 #elif defined __loongarch64
 #  define RETURN_INSTR 0x4c000020 /* jirl zero, ra, 0 */
 
+#elif defined __sw_64 || __sw_64__
+#define RETURN_INSTR 0x0bfa0000 /* ret zero,(ra),0 */
+
 #elif defined __ia64
 struct ia64_instr {
   uint32_t mI[4];
diff -auNr firefox-102.9.0/modules/freetype2/builds/unix/config.guess firefox-102.9.0.sw/modules/freetype2/builds/unix/config.guess
--- firefox-102.9.0/modules/freetype2/builds/unix/config.guess	2023-03-10 07:59:37.000000000 +0800
+++ firefox-102.9.0.sw/modules/freetype2/builds/unix/config.guess	2024-12-06 16:50:35.843561107 +0800
@@ -1143,6 +1143,9 @@
     sparc:Linux:*:* | sparc64:Linux:*:*)
 	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
 	;;
+    sw_64*:Linux:*:*)
+        GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+        exit ;;
     tile*:Linux:*:*)
 	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
 	;;
diff -auNr firefox-102.9.0/modules/freetype2/builds/unix/config.sub firefox-102.9.0.sw/modules/freetype2/builds/unix/config.sub
--- firefox-102.9.0/modules/freetype2/builds/unix/config.sub	2023-03-10 07:59:37.000000000 +0800
+++ firefox-102.9.0.sw/modules/freetype2/builds/unix/config.sub	2024-12-06 16:50:49.893643679 +0800
@@ -1267,6 +1267,7 @@
 			| sparclite \
 			| sparcv8 | sparcv9 | sparcv9b | sparcv9v | sv1 | sx* \
 			| spu \
+                        | sw_64 \
 			| tahoe \
 			| thumbv7* \
 			| tic30 | tic4x | tic54x | tic55x | tic6x | tic80 \
diff -auNr firefox-102.9.0/nsprpub/build/autoconf/config.guess firefox-102.9.0.sw/nsprpub/build/autoconf/config.guess
--- firefox-102.9.0/nsprpub/build/autoconf/config.guess	2023-03-10 07:55:17.000000000 +0800
+++ firefox-102.9.0.sw/nsprpub/build/autoconf/config.guess	2024-12-06 16:51:25.693854088 +0800
@@ -1088,6 +1088,9 @@
     sparc:Linux:*:* | sparc64:Linux:*:*)
 	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
 	exit ;;
+    sw_64*:Linux:*:*)
+        GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+        exit ;;
     tile*:Linux:*:*)
 	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
 	exit ;;
diff -auNr firefox-102.9.0/nsprpub/build/autoconf/config.sub firefox-102.9.0.sw/nsprpub/build/autoconf/config.sub
--- firefox-102.9.0/nsprpub/build/autoconf/config.sub	2023-03-10 07:55:17.000000000 +0800
+++ firefox-102.9.0.sw/nsprpub/build/autoconf/config.sub	2024-12-06 16:51:37.293922250 +0800
@@ -1240,6 +1240,7 @@
 			| sparclite \
 			| sparcv8 | sparcv9 | sparcv9b | sparcv9v | sv1 | sx* \
 			| spu \
+                        | sw_64 \
 			| tahoe \
 			| tic30 | tic4x | tic54x | tic55x | tic6x | tic80 \
 			| tron \
diff -auNr firefox-102.9.0/python/mozbuild/mozbuild/configure/constants.py firefox-102.9.0.sw/python/mozbuild/mozbuild/configure/constants.py
--- firefox-102.9.0/python/mozbuild/mozbuild/configure/constants.py	2023-03-10 07:59:37.000000000 +0800
+++ firefox-102.9.0.sw/python/mozbuild/mozbuild/configure/constants.py	2024-12-06 17:06:24.349610772 +0800
@@ -62,6 +62,7 @@
     "x86": 32,
     "x86_64": 64,
     "wasm32": 32,
+    "sw_64": 64,
 }
 
 CPU = EnumString.subclass(*CPU_bitness.keys())
@@ -97,6 +98,7 @@
         ("mips32", "__mips__"),
         ("riscv64", "__riscv && __riscv_xlen == 64"),
         ("loongarch64", "__loongarch64"),
+        ("sw_64", "__sw_64"),
         ("sh4", "__sh__"),
         ("wasm32", "__wasm32__"),
     )
diff -auNr firefox-102.9.0/toolkit/moz.configure firefox-102.9.0.sw/toolkit/moz.configure
--- firefox-102.9.0/toolkit/moz.configure	2023-03-10 07:59:39.000000000 +0800
+++ firefox-102.9.0.sw/toolkit/moz.configure	2024-12-06 17:19:38.254351045 +0800
@@ -1292,6 +1292,7 @@
             "ia64",
             "mips32",
             "mips64",
+            "sw_64",
         )
         or target.cpu.startswith("ppc")
     ):