src/lj_arch.h

   1 /*
   2 ** Target architecture selection.
   3 ** Copyright (C) 2005-2011 Mike Pall. See Copyright Notice in luajit.h
   4 */
   5
   6 #ifndef _LJ_ARCH_H
   7 #define _LJ_ARCH_H
   8
   9 #include "lua.h"
  10
  11 /* Target endianess. */
  12 #define LUAJIT_LE       0
  13 #define LUAJIT_BE       1
  14
  15 /* Target architectures. */
  16 #define LUAJIT_ARCH_X86         1
  17 #define LUAJIT_ARCH_x86         1
  18 #define LUAJIT_ARCH_X64         2
  19 #define LUAJIT_ARCH_x64         2
  20 #define LUAJIT_ARCH_ARM         3
  21 #define LUAJIT_ARCH_arm         3
  22 #define LUAJIT_ARCH_PPC         4
  23 #define LUAJIT_ARCH_ppc         4
  24 #define LUAJIT_ARCH_PPCSPE      5
  25 #define LUAJIT_ARCH_ppcspe      5
  26
  27 /* Target OS. */
  28 #define LUAJIT_OS_OTHER         0
  29 #define LUAJIT_OS_WINDOWS       1
  30 #define LUAJIT_OS_LINUX         2
  31 #define LUAJIT_OS_OSX           3
  32 #define LUAJIT_OS_BSD           4
  33 #define LUAJIT_OS_POSIX         5
  34
  35 /* Select native target if no target defined. */
  36 #ifndef LUAJIT_TARGET
  37
  38 #if defined(__i386) || defined(__i386__) || defined(_M_IX86)
  39 #define LUAJIT_TARGET   LUAJIT_ARCH_X86
  40 #elif defined(__x86_64__) || defined(__x86_64) || defined(_M_X64) || defined(_M_AMD64)
  41 #define LUAJIT_TARGET   LUAJIT_ARCH_X64
  42 #elif defined(__arm__) || defined(__arm) || defined(__ARM__) || defined(__ARM)
  43 #define LUAJIT_TARGET   LUAJIT_ARCH_ARM
  44 #elif defined(__ppc__) || defined(__ppc) || defined(__PPC__) || defined(__PPC) || defined(__powerpc__) || defined(__powerpc) || defined(__POWERPC__) || defined(__POWERPC) || defined(_M_PPC)
  45 #ifdef __NO_FPRS__
  46 #define LUAJIT_TARGET   LUAJIT_ARCH_PPCSPE
  47 #else
  48 #define LUAJIT_TARGET   LUAJIT_ARCH_PPC
  49 #endif
  50 #else
  51 #error "No support for this architecture (yet)"
  52 #endif
  53
  54 #endif
  55
  56 /* Select native OS if no target OS defined. */
  57 #ifndef LUAJIT_OS
  58
  59 #if defined(_WIN32)
  60 #define LUAJIT_OS       LUAJIT_OS_WINDOWS
  61 #elif defined(__linux__)
  62 #define LUAJIT_OS       LUAJIT_OS_LINUX
  63 #elif defined(__MACH__) && defined(__APPLE__)
  64 #define LUAJIT_OS       LUAJIT_OS_OSX
  65 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || \
  66       defined(__NetBSD__) || defined(__OpenBSD__)
  67 #define LUAJIT_OS       LUAJIT_OS_BSD
  68 #elif (defined(__sun__) && defined(__svr4__)) || defined(__solaris__) || \
  69       defined(__CYGWIN__)
  70 #define LUAJIT_OS       LUAJIT_OS_POSIX
  71 #else
  72 #define LUAJIT_OS       LUAJIT_OS_OTHER
  73 #endif
  74
  75 #endif
  76
  77 /* Set target OS properties. */
  78 #if LUAJIT_OS == LUAJIT_OS_WINDOWS
  79 #define LJ_OS_NAME      "Windows"
  80 #elif LUAJIT_OS == LUAJIT_OS_LINUX
  81 #define LJ_OS_NAME      "Linux"
  82 #elif LUAJIT_OS == LUAJIT_OS_OSX
  83 #define LJ_OS_NAME      "OSX"
  84 #elif LUAJIT_OS == LUAJIT_OS_BSD
  85 #define LJ_OS_NAME      "BSD"
  86 #elif LUAJIT_OS == LUAJIT_OS_POSIX
  87 #define LJ_OS_NAME      "POSIX"
  88 #else
  89 #define LJ_OS_NAME      "Other"
  90 #endif
  91
  92 #define LJ_TARGET_WINDOWS       (LUAJIT_OS == LUAJIT_OS_WINDOWS)
  93 #define LJ_TARGET_LINUX         (LUAJIT_OS == LUAJIT_OS_LINUX)
  94 #define LJ_TARGET_OSX           (LUAJIT_OS == LUAJIT_OS_OSX)
  95 #define LJ_TARGET_POSIX         (LUAJIT_OS > LUAJIT_OS_WINDOWS)
  96 #define LJ_TARGET_DLOPEN        LJ_TARGET_POSIX
  97
  98 #define LJ_NUMMODE_SINGLE       0       /* Single-number mode only. */
  99 #define LJ_NUMMODE_SINGLE_DUAL  1       /* Default to single-number mode. */
 100 #define LJ_NUMMODE_DUAL         2       /* Dual-number mode only. */
 101 #define LJ_NUMMODE_DUAL_SINGLE  3       /* Default to dual-number mode. */
 102
 103 /* Set target architecture properties. */
 104 #if LUAJIT_TARGET == LUAJIT_ARCH_X86
 105
 106 #define LJ_ARCH_NAME            "x86"
 107 #define LJ_ARCH_BITS            32
 108 #define LJ_ARCH_ENDIAN          LUAJIT_LE
 109 #define LJ_ARCH_HASFPU          1
 110 #define LJ_ABI_WIN              LJ_TARGET_WINDOWS
 111 #define LJ_TARGET_X86           1
 112 #define LJ_TARGET_X86ORX64      1
 113 #define LJ_TARGET_EHRETREG      0
 114 #define LJ_TARGET_MASKSHIFT     1
 115 #define LJ_TARGET_MASKROT       1
 116 #define LJ_ARCH_NUMMODE         LJ_NUMMODE_SINGLE_DUAL
 117
 118 #elif LUAJIT_TARGET == LUAJIT_ARCH_X64
 119
 120 #define LJ_ARCH_NAME            "x64"
 121 #define LJ_ARCH_BITS            64
 122 #define LJ_ARCH_ENDIAN          LUAJIT_LE
 123 #define LJ_ARCH_HASFPU          1
 124 #define LJ_ABI_WIN              LJ_TARGET_WINDOWS
 125 #define LJ_TARGET_X64           1
 126 #define LJ_TARGET_X86ORX64      1
 127 #define LJ_TARGET_EHRETREG      0
 128 #define LJ_TARGET_JUMPRANGE     31      /* +-2^31 = +-2GB */
 129 #define LJ_TARGET_MASKSHIFT     1
 130 #define LJ_TARGET_MASKROT       1
 131 #define LJ_ARCH_NUMMODE         LJ_NUMMODE_SINGLE_DUAL
 132
 133 #elif LUAJIT_TARGET == LUAJIT_ARCH_ARM
 134
 135 #define LJ_ARCH_NAME            "arm"
 136 #define LJ_ARCH_BITS            32
 137 #define LJ_ARCH_ENDIAN          LUAJIT_LE
 138 #define LJ_ARCH_HASFPU          0
 139 #define LJ_ABI_SOFTFP           1
 140 #define LJ_ABI_EABI             1
 141 #define LJ_TARGET_ARM           1
 142 #define LJ_TARGET_EHRETREG      0
 143 #define LJ_TARGET_JUMPRANGE     25      /* +-2^25 = +-32MB */
 144 #define LJ_TARGET_MASKSHIFT     0
 145 #define LJ_TARGET_MASKROT       1
 146 #define LJ_TARGET_UNIFYROT      2       /* Want only IR_BROR. */
 147 #define LJ_ARCH_NUMMODE         LJ_NUMMODE_DUAL
 148 #if LJ_TARGET_OSX
 149 /* Runtime code generation is restricted on iOS. Complain to Apple, not me. */
 150 #define LJ_ARCH_NOJIT           1
 151 #endif
 152
 153 #elif LUAJIT_TARGET == LUAJIT_ARCH_PPC
 154
 155 #define LJ_ARCH_NAME            "ppc"
 156 #define LJ_ARCH_BITS            32
 157 #define LJ_ARCH_ENDIAN          LUAJIT_BE
 158 #define LJ_ARCH_HASFPU          1
 159 #define LJ_TARGET_PPC           1
 160 #define LJ_TARGET_EHRETREG      3
 161 #define LJ_TARGET_JUMPRANGE     25      /* +-2^25 = +-32MB */
 162 #define LJ_TARGET_MASKSHIFT     0
 163 #define LJ_TARGET_MASKROT       1
 164 #define LJ_TARGET_UNIFYROT      1       /* Want only IR_BROL. */
 165 #define LJ_ARCH_NUMMODE         LJ_NUMMODE_DUAL_SINGLE
 166
 167 #elif LUAJIT_TARGET == LUAJIT_ARCH_PPCSPE
 168
 169 #define LJ_ARCH_NAME            "ppcspe"
 170 #define LJ_ARCH_BITS            32
 171 #define LJ_ARCH_ENDIAN          LUAJIT_BE
 172 #define LJ_ARCH_HASFPU          1
 173 #define LJ_ABI_SOFTFP           1
 174 #define LJ_ABI_EABI             1
 175 #define LJ_TARGET_PPCSPE        1
 176 #define LJ_TARGET_EHRETREG      3
 177 #define LJ_TARGET_JUMPRANGE     25      /* +-2^25 = +-32MB */
 178 #define LJ_TARGET_MASKSHIFT     0
 179 #define LJ_TARGET_MASKROT       1
 180 #define LJ_TARGET_UNIFYROT      1       /* Want only IR_BROL. */
 181 #define LJ_ARCH_NUMMODE         LJ_NUMMODE_SINGLE
 182 #define LJ_ARCH_NOFFI           1       /* NYI: comparisons, calls. */
 183 #define LJ_ARCH_NOJIT           1
 184
 185 #else
 186 #error "No target architecture defined"
 187 #endif
 188
 189 #ifndef LJ_PAGESIZE
 190 #define LJ_PAGESIZE             4096
 191 #endif
 192
 193 /* Check for minimum required compiler versions. */
 194 #if defined(__GNUC__)
 195 #if LJ_TARGET_X64
 196 #if __GNUC__ < 4
 197 #error "Need at least GCC 4.0 or newer"
 198 #endif
 199 #elif LJ_TARGET_ARM
 200 #if (__GNUC__ < 4) || ((__GNUC__ == 4) && __GNUC_MINOR__ < 2)
 201 #error "Need at least GCC 4.2 or newer"
 202 #endif
 203 #elif LJ_TARGET_PPC
 204 #if (__GNUC__ < 4) || ((__GNUC__ == 4) && __GNUC_MINOR__ < 3)
 205 #error "Need at least GCC 4.3 or newer"
 206 #endif
 207 #else
 208 #if (__GNUC__ < 3) || ((__GNUC__ == 3) && __GNUC_MINOR__ < 4)
 209 #error "Need at least GCC 3.4 or newer"
 210 #endif
 211 #endif
 212 #endif
 213
 214 /* Check target-specific constraints. */
 215 #ifndef _BUILDVM_H
 216 #if LJ_TARGET_ARM
 217 #if defined(__ARMEB__)
 218 #error "No support for big-endian ARM"
 219 #endif
 220 #if defined(__ARM_PCS_VFP)
 221 #error "No support for ARM hard-float ABI (yet)"
 222 #endif
 223 #if !(__ARM_EABI__ || LJ_TARGET_OSX)
 224 #error "Only ARM EABI or iOS 3.0+ ABI is supported"
 225 #endif
 226 #elif LJ_TARGET_PPC || LJ_TARGET_PPCSPE
 227 #if defined(_SOFT_FLOAT) || defined(_SOFT_DOUBLE)
 228 #error "No support for PowerPC CPUs without double-precision FPU"
 229 #endif
 230 #if defined(_LITTLE_ENDIAN)
 231 #error "No support for little-endian PowerPC"
 232 #endif
 233 #if defined(_LP64)
 234 #error "No support for PowerPC 64 bit mode"
 235 #endif
 236 #endif
 237 #endif
 238
 239 /* Enable or disable the dual-number mode for the VM. */
 240 #if (LJ_ARCH_NUMMODE == LJ_NUMMODE_SINGLE && LUAJIT_NUMMODE == 2) || \
 241     (LJ_ARCH_NUMMODE == LJ_NUMMODE_DUAL && LUAJIT_NUMMODE == 1)
 242 #error "No support for this number mode on this architecture"
 243 #endif
 244 #if LJ_ARCH_NUMMODE == LJ_NUMMODE_DUAL || \
 245     (LJ_ARCH_NUMMODE == LJ_NUMMODE_DUAL_SINGLE && LUAJIT_NUMMODE != 1) || \
 246     (LJ_ARCH_NUMMODE == LJ_NUMMODE_SINGLE_DUAL && LUAJIT_NUMMODE == 2)
 247 #define LJ_DUALNUM              1
 248 #else
 249 #define LJ_DUALNUM              0
 250 #endif
 251
 252 /* Disable or enable the JIT compiler. */
 253 #if defined(LUAJIT_DISABLE_JIT) || defined(LJ_ARCH_NOJIT)
 254 #define LJ_HASJIT               0
 255 #else
 256 #define LJ_HASJIT               1
 257 #endif
 258
 259 /* Disable or enable the FFI extension. */
 260 #if defined(LUAJIT_DISABLE_FFI) || defined(LJ_ARCH_NOFFI)
 261 #define LJ_HASFFI               0
 262 #else
 263 #define LJ_HASFFI               1
 264 #endif
 265
 266 #define LJ_SOFTFP               (!LJ_ARCH_HASFPU)
 267
 268 #if LJ_ARCH_ENDIAN == LUAJIT_BE
 269 #define LJ_LE                   0
 270 #define LJ_BE                   1
 271 #define LJ_ENDIAN_SELECT(le, be)        be
 272 #define LJ_ENDIAN_LOHI(lo, hi)          hi lo
 273 #else
 274 #define LJ_LE                   1
 275 #define LJ_BE                   0
 276 #define LJ_ENDIAN_SELECT(le, be)        le
 277 #define LJ_ENDIAN_LOHI(lo, hi)          lo hi
 278 #endif
 279
 280 #if LJ_ARCH_BITS == 32
 281 #define LJ_32                   1
 282 #define LJ_64                   0
 283 #else
 284 #define LJ_32                   0
 285 #define LJ_64                   1
 286 #endif
 287
 288 /* Various workarounds for embedded operating systems. */
 289 #if defined(__ANDROID__) || defined(__symbian__)
 290 #define LUAJIT_NO_LOG2
 291 #endif
 292 #if defined(__symbian__)
 293 #define LUAJIT_NO_EXP2
 294 #endif
 295
 296 #if defined(__symbian__) || (LJ_TARGET_ARM && LJ_TARGET_OSX)
 297 #define LUAJIT_NO_UNWIND
 298 #endif
 299
 300 #endif