Initial implementation of s390 cross-compile

lib/systems/doubles.nix

@@ -28,7 +28,7 @@ let
     "aarch64-linux" "armv5tel-linux" "armv6l-linux" "armv7a-linux"
     "armv7l-linux" "i686-linux" "mipsel-linux" "powerpc64-linux"
     "powerpc64le-linux" "riscv32-linux" "riscv64-linux" "x86_64-linux"
-    "m68k-linux"
+    "m68k-linux" "s390-linux"
 
     # MMIXware
     "mmix-mmixware"
@@ -41,7 +41,7 @@ let
     # none
     "aarch64-none" "arm-none" "armv6l-none" "avr-none" "i686-none" "msp430-none"
     "or1k-none" "powerpc-none" "riscv32-none" "riscv64-none" "vc4-none" "m68k-none"
-    "x86_64-none"
+    "s390-none" "x86_64-none"
 
     # OpenBSD
     "i686-openbsd" "x86_64-openbsd"
@@ -76,6 +76,7 @@ in {
   vc4           = filterDoubles predicates.isVc4;
   or1k          = filterDoubles predicates.isOr1k;
   m68k          = filterDoubles predicates.isM68k;
+  s390          = filterDoubles predicates.isS390;
   js            = filterDoubles predicates.isJavaScript;
 
   bigEndian     = filterDoubles predicates.isBigEndian;

lib/systems/examples.nix

@@ -148,6 +148,10 @@ rec {
     config = "m68k-unknown-linux-gnu";
   };
 
+  s390 = {
+    config = "s390-unknown-linux-gnu";
+  };
+
   arm-embedded = {
     config = "arm-none-eabi";
     libc = "newlib";

lib/systems/inspect.nix

@@ -27,6 +27,7 @@ rec {
     isAlpha        = { cpu = { family = "alpha"; }; };
     isOr1k         = { cpu = { family = "or1k"; }; };
     isM68k         = { cpu = { family = "m68k"; }; };
+    isS390         = { cpu = { family = "s390"; }; };
     isJavaScript   = { cpu = cpuTypes.js; };
 
     is32bit        = { cpu = { bits = 32; }; };

lib/systems/parse.nix

@@ -105,6 +105,8 @@ rec {
     riscv32  = { bits = 32; significantByte = littleEndian; family = "riscv"; };
     riscv64  = { bits = 64; significantByte = littleEndian; family = "riscv"; };
 
+    s390     = { bits = 32; significantByte = bigEndian; family = "s390"; };
+
     sparc    = { bits = 32; significantByte = bigEndian;    family = "sparc"; };
     sparc64  = { bits = 64; significantByte = bigEndian;    family = "sparc"; };
 

lib/tests/systems.nix

@@ -28,7 +28,7 @@ with lib.systems.doubles; lib.runTests {
   testredox = mseteq redox [ "x86_64-redox" ];
   testgnu = mseteq gnu (linux /* ++ kfreebsd ++ ... */);
   testillumos = mseteq illumos [ "x86_64-solaris" ];
-  testlinux = mseteq linux [ "aarch64-linux" "armv5tel-linux" "armv6l-linux" "armv7a-linux" "armv7l-linux" "i686-linux" "mipsel-linux" "riscv32-linux" "riscv64-linux" "x86_64-linux" "powerpc64-linux" "powerpc64le-linux" "m68k-linux" ];
+  testlinux = mseteq linux [ "aarch64-linux" "armv5tel-linux" "armv6l-linux" "armv7a-linux" "armv7l-linux" "i686-linux" "mipsel-linux" "riscv32-linux" "riscv64-linux" "x86_64-linux" "powerpc64-linux" "powerpc64le-linux" "m68k-linux" "s390-linux" ];
   testnetbsd = mseteq netbsd [ "aarch64-netbsd" "armv6l-netbsd" "armv7a-netbsd" "armv7l-netbsd" "i686-netbsd" "mipsel-netbsd" "powerpc-netbsd" "riscv32-netbsd" "riscv64-netbsd" "x86_64-netbsd" ];
   testopenbsd = mseteq openbsd [ "i686-openbsd" "x86_64-openbsd" ];
   testwindows = mseteq windows [ "i686-cygwin" "x86_64-cygwin" "i686-windows" "x86_64-windows" ];

pkgs/build-support/bintools-wrapper/default.nix

@@ -209,6 +209,7 @@ stdenv.mkDerivation {
       else if targetPlatform.isVc4 then "vc4"
       else if targetPlatform.isOr1k then "or1k"
       else if targetPlatform.isM68k then "m68k"
+      else if targetPlatform.isS390 then "s390"
       else if targetPlatform.isRiscV then "lriscv"
       else throw "unknown emulation for platform: ${targetPlatform.config}";
     in if targetPlatform.useLLVM or false then ""