ARM64: Add build infrastructure and initial port of interpreter.

1 files changed, 35 insertions, 6 deletions

diff --git a/src/lj_arch.h b/src/lj_arch.h
index 18555b41..0d69d528 100644
--- a/src/lj_arch.h
+++ b/src/lj_arch.h
@@ -19,12 +19,14 @@
 #define LUAJIT_ARCH_x64         2
 #define LUAJIT_ARCH_ARM         3
 #define LUAJIT_ARCH_arm         3
-#define LUAJIT_ARCH_PPC         4
-#define LUAJIT_ARCH_ppc         4
-#define LUAJIT_ARCH_PPCSPE      5
-#define LUAJIT_ARCH_ppcspe      5
-#define LUAJIT_ARCH_MIPS        6
-#define LUAJIT_ARCH_mips        6
+#define LUAJIT_ARCH_ARM64       4
+#define LUAJIT_ARCH_arm64       4
+#define LUAJIT_ARCH_PPC         5
+#define LUAJIT_ARCH_ppc         6
+#define LUAJIT_ARCH_PPCSPE      6
+#define LUAJIT_ARCH_ppcspe      6
+#define LUAJIT_ARCH_MIPS        7
+#define LUAJIT_ARCH_mips        7
 
 /* Target OS. */
 #define LUAJIT_OS_OTHER         0
@@ -43,6 +45,8 @@
 #define LUAJIT_TARGET   LUAJIT_ARCH_X64
 #elif defined(__arm__) || defined(__arm) || defined(__ARM__) || defined(__ARM)
 #define LUAJIT_TARGET   LUAJIT_ARCH_ARM
+#elif defined(__aarch64__)
+#define LUAJIT_TARGET   LUAJIT_ARCH_ARM64
 #elif defined(__ppc__) || defined(__ppc) || defined(__PPC__) || defined(__PPC) || defined(__powerpc__) || defined(__powerpc) || defined(__POWERPC__) || defined(__POWERPC) || defined(_M_PPC)
 #ifdef __NO_FPRS__
 #define LUAJIT_TARGET   LUAJIT_ARCH_PPCSPE
@@ -191,6 +195,24 @@
 #define LJ_ARCH_VERSION         50
 #endif
 
+#elif LUAJIT_TARGET == LUAJIT_ARCH_ARM64
+
+#define LJ_ARCH_NAME            "arm64"
+#define LJ_ARCH_BITS            64
+#define LJ_ARCH_ENDIAN          LUAJIT_LE
+#define LJ_TARGET_ARM64         1
+#define LJ_TARGET_EHRETREG      0
+#define LJ_TARGET_JUMPRANGE     27      /* +-2^27 = +-128MB */
+#define LJ_TARGET_MASKSHIFT     1
+#define LJ_TARGET_MASKROT       1
+#define LJ_TARGET_UNIFYROT      2       /* Want only IR_BROR. */
+#define LJ_TARGET_GC64          1
+#define LJ_ARCH_NUMMODE         LJ_NUMMODE_DUAL
+#define LJ_ARCH_NOFFI           1       /* NYI */
+#define LJ_ARCH_NOJIT           1       /* NYI */
+
+#define LJ_ARCH_VERSION         80
+
 #elif LUAJIT_TARGET == LUAJIT_ARCH_PPC
 
 #define LJ_ARCH_NAME            "ppc"
@@ -327,6 +349,13 @@
 #if !(__ARM_EABI__ || LJ_TARGET_IOS)
 #error "Only ARM EABI or iOS 3.0+ ABI is supported"
 #endif
+#elif LJ_TARGET_ARM64
+#if defined(__AARCH64EB__)
+#error "No support for big-endian ARM64"
+#endif
+#if defined(_ILP32)
+#error "No support for ILP32 model on ARM64"
+#endif
 #elif LJ_TARGET_PPC || LJ_TARGET_PPCSPE
 #if defined(_SOFT_FLOAT) || defined(_SOFT_DOUBLE)
 #error "No support for PowerPC CPUs without double-precision FPU"