Add support for MIPS (64-bit, Little Endian) (#2520)

Add support for MIPS (64-bit, Little Endian), or mips64el, commonly found
on pre-LoongArch Loongson hardware.

Signed-off-by: Mingcong Bai <[email protected]>

Author: MingcongBai

src/_premake_init.lua

@@ -34,7 +34,8 @@
 			p.PPC64,
 			p.WASM32,
 			p.WASM64,
-			p.E2K
+			p.E2K,
+			p.MIPS64EL
 		},
 		aliases = {
 			i386  = p.X86,

src/base/_foundation.lua

@@ -71,6 +71,7 @@
 	premake.WASM32 = "wasm32"
 	premake.WASM64 = "wasm64"
 	premake.E2K = "e2k"
+	premake.MIPS64EL = "mips64el"
 
 
 ---

src/host/premake.h

@@ -79,6 +79,10 @@
 #define PLATFORM_ARCHITECTURE "ppc64"
 #elif defined(__ppc__) || defined(__powerpc__)
 #define PLATFORM_ARCHITECTURE "ppc"
+#elif (defined(__mips) && defined (_ABI64) && \
+       defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && \
+       (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__))
+#define PLATFORM_ARCHITECTURE "mips64el"
 #elif !defined(RC_INVOKED)
 #error Unknown architecture detected
 #endif

website/docs/architecture.md

@@ -20,6 +20,7 @@ architecture ("value")
 * `wasm32`,
 * `wasm64`,
 * `e2k`,
+* `mips64el`,
 * `armv5`: Only supported in VSAndroid projects
 * `armv7`: Only supported in VSAndroid projects
 * `aarch64`: Only supported in VSAndroid projects