From 13389eab9bc879a32e74c9b11ce17d68968cd4fe Mon Sep 17 00:00:00 2001
From: def <dennis@felsin9.de>
Date: Fri, 31 Jul 2015 23:57:50 +0200
Subject: [PATCH] Add arm64 support (untested)

---
 compiler/platform.nim    | 3 ++-
 lib/system.nim           | 2 +-
 lib/system/platforms.nim | 2 ++
 3 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/compiler/platform.nim b/compiler/platform.nim
index 153ada2b2..c4e7d453a 100644
--- a/compiler/platform.nim
+++ b/compiler/platform.nim
@@ -159,7 +159,7 @@ type
                      # alias conditionals to condsyms (end of module).
     cpuNone, cpuI386, cpuM68k, cpuAlpha, cpuPowerpc, cpuPowerpc64,
     cpuPowerpc64el, cpuSparc, cpuVm, cpuIa64, cpuAmd64, cpuMips, cpuMipsel,
-    cpuArm, cpuJS, cpuNimrodVM, cpuAVR
+    cpuArm, cpuArm64, cpuJS, cpuNimrodVM, cpuAVR
 
 type
   TEndian* = enum
@@ -183,6 +183,7 @@ const
     (name: "mips", intSize: 32, endian: bigEndian, floatSize: 64, bit: 32),
     (name: "mipsel", intSize: 32, endian: littleEndian, floatSize: 64, bit: 32),
     (name: "arm", intSize: 32, endian: littleEndian, floatSize: 64, bit: 32),
+    (name: "arm64", intSize: 64, endian: littleEndian, floatSize: 64, bit: 64),
     (name: "js", intSize: 32, endian: bigEndian,floatSize: 64,bit: 32),
     (name: "nimrodvm", intSize: 32, endian: bigEndian, floatSize: 64, bit: 32),
     (name: "avr", intSize: 16, endian: littleEndian, floatSize: 32, bit: 16)]
diff --git a/lib/system.nim b/lib/system.nim
index 19af433de..260d7fbcd 100644
--- a/lib/system.nim
+++ b/lib/system.nim
@@ -1151,7 +1151,7 @@ const
   hostCPU* {.magic: "HostCPU".}: string = ""
     ## a string that describes the host CPU. Possible values:
     ## "i386", "alpha", "powerpc", "powerpc64", "powerpc64el", "sparc",
-    ## "amd64", "mips", "mipsel", "arm".
+    ## "amd64", "mips", "mipsel", "arm", "arm64".
 
   seqShallowFlag = low(int)
 
diff --git a/lib/system/platforms.nim b/lib/system/platforms.nim
index 243f48a3a..0a7045fae 100644
--- a/lib/system/platforms.nim
+++ b/lib/system/platforms.nim
@@ -25,6 +25,7 @@ type
     mips,                      ## Mips based processor
     mipsel,                    ## Little Endian Mips based processor
     arm,                       ## ARM based processor
+    arm64,                     ## ARM64 based processor
     vm,                        ## Some Virtual machine: Nim's VM or JavaScript
     avr                        ## AVR based processor
 
@@ -72,6 +73,7 @@ const
                elif defined(mips): CpuPlatform.mips
                elif defined(mipsel): CpuPlatform.mipsel
                elif defined(arm): CpuPlatform.arm
+               elif defined(arm64): CpuPlatform.arm64
                elif defined(vm): CpuPlatform.vm
                elif defined(avr): CpuPlatform.avr
                else: CpuPlatform.none