From 7549347b0cab2e7e96ad144e0a1d7e99111cd3f2 Mon Sep 17 00:00:00 2001
From: Shi Pujin <shipujin.t@gmail.com>
Date: Sun, 9 Jul 2023 09:26:03 +0800
Subject: [PATCH] add LoongArch support


diff --git a/CMakeLists.txt b/CMakeLists.txt
index 31a2ea1..02873ce 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -63,6 +63,8 @@ elseif (LOWERCASE_CMAKE_SYSTEM_PROCESSOR MATCHES "^aarch64")
     set(WTF_CPU_ARM64 1)
 elseif (LOWERCASE_CMAKE_SYSTEM_PROCESSOR MATCHES "alpha*")
     set(WTF_CPU_ALPHA 1)
+elseif (LOWERCASE_CMAKE_SYSTEM_PROCESSOR MATCHES "loongarch64")
+	set(WTF_CPU_LOONGARCH64 1)
 elseif (LOWERCASE_CMAKE_SYSTEM_PROCESSOR MATCHES "^mips")
     set(WTF_CPU_MIPS 1)
 elseif (LOWERCASE_CMAKE_SYSTEM_PROCESSOR MATCHES "sh4")
@@ -83,6 +85,8 @@ elseif (LOWERCASE_CMAKE_SYSTEM_PROCESSOR MATCHES "s390")
     set(WTF_CPU_S390 1)
 elseif (LOWERCASE_CMAKE_SYSTEM_PROCESSOR MATCHES "s390x")
     set(WTF_CPU_S390X 1)
+elseif (LOWERCASE_CMAKE_SYSTEM_PROCESSOR MATCHES "loongarch64")
+    set(WTF_CPU_LOONGARCH64 1)
 else ()
     message(FATAL_ERROR "Unknown CPU '${LOWERCASE_CMAKE_SYSTEM_PROCESSOR}'")
 endif ()
diff --git a/Source/JavaScriptCore/CMakeLists.txt b/Source/JavaScriptCore/CMakeLists.txt
index afd76ca..aa12681 100644
--- a/Source/JavaScriptCore/CMakeLists.txt
+++ b/Source/JavaScriptCore/CMakeLists.txt
@@ -1285,6 +1285,7 @@ elseif (WTF_CPU_PPC64)
 elseif (WTF_CPU_PPC64LE)
 elseif (WTF_CPU_S390)
 elseif (WTF_CPU_S390X)
+elseif (WTF_CPU_LOONGARCH64)
 elseif (WTF_CPU_MIPS)
 elseif (WTF_CPU_SH4)
 elseif (WTF_CPU_X86)
diff --git a/Source/WTF/wtf/Platform.h b/Source/WTF/wtf/Platform.h
index 5717f3e..67ac0df 100644
--- a/Source/WTF/wtf/Platform.h
+++ b/Source/WTF/wtf/Platform.h
@@ -167,6 +167,11 @@
 #define WTF_CPU_X86_SSE2 1
 #endif
 
+/* CPU(LOONGARCH64) - LOONGARCH64 */
+#if defined(__loongarch64)
+#define WTF_CPU_LOONGARCH64 1
+#endif
+
 #endif
 
 /* CPU(X86_64) - AMD64 / Intel64 / x86_64 64-bit */
@@ -705,6 +710,7 @@
     || CPU(ALPHA) \
     || CPU(ARM64) \
     || CPU(S390X) \
+    || CPU(LOONGARCH64) \
     || CPU(MIPS64) \
     || CPU(PPC64) \
     || CPU(PPC64LE)
diff --git a/Source/WTF/wtf/dtoa/utils.h b/Source/WTF/wtf/dtoa/utils.h
index 889642c..4c854a3 100644
--- a/Source/WTF/wtf/dtoa/utils.h
+++ b/Source/WTF/wtf/dtoa/utils.h
@@ -47,9 +47,10 @@
 // On Linux,x86 89255e-22 != Div_double(89255.0/1e22)
 #if defined(_M_X64) || defined(__x86_64__) || \
 defined(__ARMEL__) || \
+defined(__loongarch64) || \
 defined(_MIPS_ARCH_MIPS32R2)
 #define DOUBLE_CONVERSION_CORRECT_DOUBLE_OPERATIONS 1
-#elif CPU(MIPS) || CPU(MIPS64) || CPU(PPC) || CPU(PPC64) || CPU(PPC64LE) || CPU(SH4) || CPU(S390) || CPU(S390X) || CPU(IA64) || CPU(ALPHA) || CPU(ARM64) || CPU(HPPA)
+#elif CPU(LOONGARCH64) || CPU(MIPS) || CPU(MIPS64) || CPU(PPC) || CPU(PPC64) || CPU(PPC64LE) || CPU(SH4) || CPU(S390) || CPU(S390X) || CPU(IA64) || CPU(ALPHA) || CPU(ARM64) || CPU(HPPA)
 #define DOUBLE_CONVERSION_CORRECT_DOUBLE_OPERATIONS 1
 #elif defined(_M_IX86) || defined(__i386__)
 #if defined(_WIN32)
-- 
2.39.1