From 663631eb50ba05c214ebae33ee02dbbe7fcfaceb Mon Sep 17 00:00:00 2001
From: Catty Steve <41934931+Catty2014@users.noreply.github.com>
Date: Sat, 19 Sep 2026 14:41:38 +0800
Subject: [PATCH] Add LoongArch64 support (#428)

* Add LoongArch64 support

* Use refined preprocessor to determine loongarch64
---
 include/bx/platform.h |  7 +++++++
 scripts/toolchain.lua | 23 +++++++++++++++++++++++
 2 files changed, 30 insertions(+)

diff --git a/include/bx/platform.h b/include/bx/platform.h
index 1365f50..1a5291e 100644
--- a/include/bx/platform.h
+++ b/include/bx/platform.h
@@ -25,6 +25,7 @@
 #define BX_CPU_JIT   0
 #define BX_CPU_MIPS  0
 #define BX_CPU_PPC   0
+#define BX_CPU_LOONGARCH64 0
 #define BX_CPU_RISCV 0
 #define BX_CPU_X86   0
 
@@ -108,6 +109,10 @@
 #	undef  BX_CPU_RISCV
 #	define BX_CPU_RISCV 1
 #	define BX_CACHE_LINE_SIZE 64
+#elif defined(__loongarch__) && (__loongarch_grlen == 64)
+#	undef  BX_CPU_LOONGARCH64
+#	define BX_CPU_LOONGARCH64 1
+#	define BX_CACHE_LINE_SIZE 64
 #elif defined(_M_IX86)    \
  ||   defined(_M_X64)     \
  ||   defined(__i386__)   \
@@ -400,6 +405,8 @@
 #	define BX_CPU_NAME "MIPS"
 #elif BX_CPU_PPC
 #	define BX_CPU_NAME "PowerPC"
+#elif BX_CPU_LOONGARCH64
+#	define BX_CPU_NAME "LoongArch64"
 #elif BX_CPU_RISCV
 #	define BX_CPU_NAME "RISC-V"
 #elif BX_CPU_X86
diff --git a/scripts/toolchain.lua b/scripts/toolchain.lua
index 1f4db40..cf93be2 100644
--- a/scripts/toolchain.lua
+++ b/scripts/toolchain.lua
@@ -78,6 +78,7 @@ function toolchain(_buildDir, _libDir)
 			{ "linux-ppc64le-gcc",  "Linux (PPC64LE, GCC compiler)"  },
 			{ "linux-ppc64le-clang",  "Linux (PPC64LE, Clang compiler)"  },
 			{ "linux-riscv64-gcc",  "Linux (RISC-V 64, GCC compiler)"  },
+			{ "linux-loongarch64-gcc",  "Linux (LoongArch64, GCC compiler)"  },
 			{ "ios-arm64",       "iOS - ARM64"                },
 			{ "ios-simulator",   "iOS - Simulator"            },
 			{ "tvos-arm64",      "tvOS - ARM64"               },
@@ -341,6 +342,9 @@ function toolchain(_buildDir, _libDir)
 		elseif "linux-riscv64-gcc" == _OPTIONS["gcc"] then
 			location (path.join(_buildDir, "projects", _ACTION .. "-linux-riscv64-gcc"))
 
+		elseif "linux-loongarch64-gcc" == _OPTIONS["gcc"] then
+			location (path.join(_buildDir, "projects", _ACTION .. "-linux-loongarch64-gcc"))
+
 		elseif "mingw-gcc" == _OPTIONS["gcc"] then
 			if not os.getenv("MINGW") then
 				print("Set MINGW environment variable.")
@@ -929,6 +933,20 @@ function toolchain(_buildDir, _libDir)
 			"-Wl,--gc-sections",
 		}
 
+	configuration { "linux-loongarch64*" }
+		buildoptions {
+			"-Wunused-value",
+			"-Wundef",
+			"-march=loongarch64"
+		}
+		links {
+			"rt",
+			"dl",
+		}
+		linkoptions {
+			"-Wl,--gc-sections",
+		}
+
 	configuration { "linux-ppc64le-gcc" }
 		targetdir (path.join(_buildDir, "linux_ppc64le_gcc/bin"))
 		objdir (path.join(_buildDir, "linux_ppc64le_gcc/obj"))
@@ -944,6 +962,11 @@ function toolchain(_buildDir, _libDir)
 		objdir (path.join(_buildDir, "linux_riscv64_gcc/obj"))
 		libdirs { path.join(_libDir, "lib/linux_riscv64_gcc") }
 
+	configuration { "linux-loongarch64-gcc" }
+		targetdir (path.join(_buildDir, "linux_loongarch64_gcc/bin"))
+		objdir (path.join(_buildDir, "linux_loongarch64_gcc/obj"))
+		libdirs { path.join(_libDir, "lib/linux_loongarch64_gcc") }
+
 	configuration { "wasm2js" }
 		targetdir (path.join(_buildDir, "wasm2js/bin"))
 		objdir (path.join(_buildDir, "wasm2js/obj"))