js-91.8.0-loongarch_port-1.patch

diff --color -Naur firefox-91.8.0.orig/build/moz.configure/init.configure firefox-91.8.0.patched/build/moz.configure/init.configure
--- firefox-91.8.0.orig/build/moz.configure/init.configure	2022-03-31 03:25:29.000000000 +0800
+++ firefox-91.8.0.patched/build/moz.configure/init.configure	2022-04-21 19:24:15.397434052 +0800
@@ -753,6 +753,9 @@
     elif cpu.startswith("arm"):
         canonical_cpu = "arm"
         endianness = "big" if cpu.startswith(("armeb", "armbe")) else "little"
+    elif cpu in ("loongarch64"):
+        canonical_cpu = "loongarch64"
+        endianness = "little"
     elif cpu in ("m68k"):
         canonical_cpu = "m68k"
         endianness = "big"
diff --color -Naur firefox-91.8.0.orig/js/src/jit/AtomicOperations.h firefox-91.8.0.patched/js/src/jit/AtomicOperations.h
--- firefox-91.8.0.orig/js/src/jit/AtomicOperations.h	2022-03-31 03:25:41.000000000 +0800
+++ firefox-91.8.0.patched/js/src/jit/AtomicOperations.h	2022-04-21 19:33:16.004766430 +0800
@@ -382,7 +382,8 @@
     defined(__ppc64__) || defined(__PPC64__) || defined(__ppc64le__) || \
     defined(__PPC64LE__) || defined(__alpha__) || defined(__hppa__) ||  \
     defined(__sh__) || defined(__s390__) || defined(__s390x__) ||       \
-    defined(__m68k__) || defined(__riscv) || defined(__wasi__)
+    defined(__m68k__) || defined(__riscv) || defined(__wasi__) ||       \
+    defined(__loongarch__)
 #  include "jit/shared/AtomicOperations-feeling-lucky.h"
 #else
 #  error "No AtomicOperations support provided for this platform"
diff --color -Naur firefox-91.8.0.orig/mfbt/double-conversion/double-conversion/utils.h firefox-91.8.0.patched/mfbt/double-conversion/double-conversion/utils.h
--- firefox-91.8.0.orig/mfbt/double-conversion/double-conversion/utils.h	2022-03-31 03:26:09.000000000 +0800
+++ firefox-91.8.0.patched/mfbt/double-conversion/double-conversion/utils.h	2022-04-21 19:35:21.790953483 +0800
@@ -118,7 +118,7 @@
     defined(__riscv) || defined(__e2k__) || \
     defined(__or1k__) || defined(__arc__) || \
     defined(__microblaze__) || defined(__XTENSA__) || \
-    defined(__EMSCRIPTEN__) || defined(__wasm32__)
+    defined(__EMSCRIPTEN__) || defined(__wasm32__) || defined (__loongarch__)
 #define DOUBLE_CONVERSION_CORRECT_DOUBLE_OPERATIONS 1
 #elif defined(__mc68000__) || \
     defined(__pnacl__) || defined(__native_client__)
diff --color -Naur firefox-91.8.0.orig/mfbt/tests/TestPoisonArea.cpp firefox-91.8.0.patched/mfbt/tests/TestPoisonArea.cpp
--- firefox-91.8.0.orig/mfbt/tests/TestPoisonArea.cpp	2022-03-31 03:25:49.000000000 +0800
+++ firefox-91.8.0.patched/mfbt/tests/TestPoisonArea.cpp	2022-04-21 19:50:20.629202549 +0800
@@ -175,6 +175,9 @@
 #  define RETURN_INSTR _return_instr
 #  define RETURN_INSTR_TYPE ia64_instr
 
+#elif defined __loongarch__
+#  define RETURN_INSTR 0x4c000020 /* jirl $r0, $r1, 0 */
+
 #else
 #  error "Need return instruction for this architecture"
 #endif
diff --color -Naur firefox-91.8.0.orig/python/mozbuild/mozbuild/configure/constants.py firefox-91.8.0.patched/python/mozbuild/mozbuild/configure/constants.py
--- firefox-91.8.0.orig/python/mozbuild/mozbuild/configure/constants.py	2022-03-31 03:25:55.000000000 +0800
+++ firefox-91.8.0.patched/python/mozbuild/mozbuild/configure/constants.py	2022-04-21 19:29:55.703485672 +0800
@@ -47,6 +47,7 @@
     "arm": 32,
     "hppa": 32,
     "ia64": 64,
+    "loongarch64": 64,
     "m68k": 32,
     "mips32": 32,
     "mips64": 64,
@@ -91,6 +92,7 @@
         ("hppa", "__hppa__"),
         ("sparc64", "__sparc__ && __arch64__"),
         ("sparc", "__sparc__"),
+        ("loongarch64", "__loongarch__ && __loongarch_grlen == 64"),
         ("m68k", "__m68k__"),
         ("mips64", "__mips64"),
         ("mips32", "__mips__"),