np_sdk/mozsrc/jri_md.h

   1 /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /* ***** BEGIN LICENSE BLOCK *****
   3  * Version: NPL 1.1/GPL 2.0/LGPL 2.1
   4  *
   5  * The contents of this file are subject to the Netscape Public License
   6  * Version 1.1 (the "License"); you may not use this file except in
   7  * compliance with the License. You may obtain a copy of the License at
   8  * http://www.mozilla.org/NPL/
   9  *
  10  * Software distributed under the License is distributed on an "AS IS" basis,
  11  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  12  * for the specific language governing rights and limitations under the
  13  * License.
  14  *
  15  * The Original Code is mozilla.org code.
  16  *
  17  * The Initial Developer of the Original Code is
  18  * Netscape Communications Corporation.
  19  * Portions created by the Initial Developer are Copyright (C) 1998
  20  * the Initial Developer. All Rights Reserved.
  21  *
  22  * Contributor(s):
  23  *
  24  * Alternatively, the contents of this file may be used under the terms of
  25  * either the GNU General Public License Version 2 or later (the "GPL"), or
  26  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  27  * in which case the provisions of the GPL or the LGPL are applicable instead
  28  * of those above. If you wish to allow use of your version of this file only
  29  * under the terms of either the GPL or the LGPL, and not to allow others to
  30  * use your version of this file under the terms of the NPL, indicate your
  31  * decision by deleting the provisions above and replace them with the notice
  32  * and other provisions required by the GPL or the LGPL. If you do not delete
  33  * the provisions above, a recipient may use your version of this file under
  34  * the terms of any one of the NPL, the GPL or the LGPL.
  35  *
  36  * ***** END LICENSE BLOCK ***** */
  37
  38 /*******************************************************************************
  39  * Java Runtime Interface - Machine Dependent Types
  40  ******************************************************************************/
  41
  42 #ifndef JRI_MD_H
  43 #define JRI_MD_H
  44
  45 #include <assert.h>
  46
  47 #ifdef __cplusplus
  48 extern "C" {
  49 #endif
  50
  51 /*******************************************************************************
  52  * WHAT'S UP WITH THIS FILE?
  53  *
  54  * This is where we define the mystical JRI_PUBLIC_API macro that works on all
  55  * platforms. If you're running with Visual C++, Symantec C, or Borland's
  56  * development environment on the PC, you're all set. Or if you're on the Mac
  57  * with Metrowerks, Symantec or MPW with SC you're ok too. For UNIX it shouldn't
  58  * matter.
  59  *
  60  * On UNIX though you probably care about a couple of other symbols though:
  61  *      IS_LITTLE_ENDIAN must be defined for little-endian systems
  62  *      HAVE_LONG_LONG must be defined on systems that have 'long long' integers
  63  *      HAVE_ALIGNED_LONGLONGS must be defined if long-longs must be 8 byte aligned
  64  *      HAVE_ALIGNED_DOUBLES must be defined if doubles must be 8 byte aligned
  65  *      IS_64 must be defined on 64-bit machines (like Dec Alpha)
  66  ******************************************************************************/
  67
  68 /* DLL Entry modifiers... */
  69
  70 /* PC */
  71 #if defined(XP_OS2)
  72 #  ifdef XP_OS2_VACPP
  73 #         define JRI_PUBLIC_API(ResultType)         ResultType _Optlink
  74 #         define JRI_PUBLIC_VAR(VarType)        VarType
  75 #     define JRI_CALLBACK
  76 #  else
  77 #         define JRI_PUBLIC_API(ResultType)         ResultType
  78 #         define JRI_PUBLIC_VAR(VarType)        VarType
  79 #     define JRI_CALLBACK
  80 #  endif
  81 #elif defined(XP_PC) || defined(_WINDOWS) || defined(WIN32) || defined(_WIN32)
  82 #       include <windows.h>
  83 #       if defined(_MSC_VER) || defined(__MINGW32__)
  84 #               if defined(WIN32) || defined(_WIN32)
  85 #                       define JRI_PUBLIC_API(ResultType)       _declspec(dllexport) ResultType
  86 #                       define JRI_PUBLIC_VAR(VarType)          VarType
  87 #                       define JRI_PUBLIC_VAR_EXP(VarType)      _declspec(dllexport) VarType
  88 #                       define JRI_PUBLIC_VAR_IMP(VarType)      _declspec(dllimport) VarType
  89 #                       define JRI_NATIVE_STUB(ResultType)      _declspec(dllexport) ResultType
  90 #                       define JRI_CALLBACK
  91 #               else /* !_WIN32 */
  92 #                   if defined(_WINDLL)
  93 #                       define JRI_PUBLIC_API(ResultType)       ResultType __cdecl __export __loadds
  94 #                       define JRI_PUBLIC_VAR(VarType)          VarType
  95 #                       define JRI_PUBLIC_VAR_EXP(VarType)      JRI_PUBLIC_VAR(VarType)
  96 #                       define JRI_PUBLIC_VAR_IMP(VarType)      JRI_PUBLIC_VAR(VarType)
  97 #                       define JRI_NATIVE_STUB(ResultType)      ResultType __cdecl __loadds
  98 #                       define JRI_CALLBACK                     __loadds
  99 #               else /* !WINDLL */
 100 #                       define JRI_PUBLIC_API(ResultType)       ResultType __cdecl __export
 101 #                       define JRI_PUBLIC_VAR(VarType)          VarType
 102 #                       define JRI_PUBLIC_VAR_EXP(VarType)      JRI_PUBLIC_VAR(VarType)
 103 #                       define JRI_PUBLIC_VAR_IMP(VarType)      JRI_PUBLIC_VAR(VarType)
 104 #                       define JRI_NATIVE_STUB(ResultType)      ResultType __cdecl __export
 105 #                       define JRI_CALLBACK                     __export
 106 #                   endif /* !WINDLL */
 107 #               endif /* !_WIN32 */
 108 #       elif defined(__BORLANDC__)
 109 #               if defined(WIN32) || defined(_WIN32)
 110 #                       define JRI_PUBLIC_API(ResultType)       __export ResultType
 111 #                       define JRI_PUBLIC_VAR(VarType)          VarType
 112 #                       define JRI_PUBLIC_VAR_EXP(VarType)      __export VarType
 113 #                       define JRI_PUBLIC_VAR_IMP(VarType)      __import VarType
 114 #                       define JRI_NATIVE_STUB(ResultType)       __export ResultType
 115 #                       define JRI_CALLBACK
 116 #               else /* !_WIN32 */
 117 #                       define JRI_PUBLIC_API(ResultType)       ResultType _cdecl _export _loadds
 118 #                       define JRI_PUBLIC_VAR(VarType)          VarType
 119 #                       define JRI_PUBLIC_VAR_EXP(VarType)      __cdecl __export VarType
 120 #                       define JRI_PUBLIC_VAR_IMP(VarType)      __cdecl __import VarType
 121 #                       define JRI_NATIVE_STUB(ResultType)      ResultType _cdecl _loadds
 122 #                       define JRI_CALLBACK                     _loadds
 123 #               endif
 124 #       else
 125 #               error Unsupported PC development environment.
 126 #       endif
 127 #       ifndef IS_LITTLE_ENDIAN
 128 #               define IS_LITTLE_ENDIAN
 129 #       endif
 130
 131 /* Mac */
 132 #elif defined (macintosh) || Macintosh || THINK_C
 133 #       if defined(__MWERKS__)                          /* Metrowerks */
 134 #               if !__option(enumsalwaysint)
 135 #                       error You need to define 'Enums Always Int' for your project.
 136 #               endif
 137 #               if defined(TARGET_CPU_68K) && !TARGET_RT_MAC_CFM
 138 #                       if !__option(fourbyteints)
 139 #                               error You need to define 'Struct Alignment: 68k' for your project.
 140 #                       endif
 141 #               endif /* !GENERATINGCFM */
 142 #               define JRI_PUBLIC_API(ResultType)       __declspec(export) ResultType
 143 #               define JRI_PUBLIC_VAR(VarType)          JRI_PUBLIC_API(VarType)
 144 #               define JRI_PUBLIC_VAR_EXP(VarType)      JRI_PUBLIC_API(VarType)
 145 #               define JRI_PUBLIC_VAR_IMP(VarType)      JRI_PUBLIC_API(VarType)
 146 #               define JRI_NATIVE_STUB(ResultType)      JRI_PUBLIC_API(ResultType)
 147 #       elif defined(__SC__)                            /* Symantec */
 148 #               error What are the Symantec defines? (warren@netscape.com)
 149 #       elif macintosh && applec                        /* MPW */
 150 #               error Please upgrade to the latest MPW compiler (SC).
 151 #       else
 152 #               error Unsupported Mac development environment.
 153 #       endif
 154 #       define JRI_CALLBACK
 155
 156 /* Unix or else */
 157 #else
 158 #       define JRI_PUBLIC_API(ResultType)               ResultType
 159 #   define JRI_PUBLIC_VAR(VarType)          VarType
 160 #   define JRI_PUBLIC_VAR_EXP(VarType)          JRI_PUBLIC_VAR(VarType)
 161 #   define JRI_PUBLIC_VAR_IMP(VarType)          JRI_PUBLIC_VAR(VarType)
 162 #   define JRI_NATIVE_STUB(ResultType)          ResultType
 163 #       define JRI_CALLBACK
 164 #endif
 165
 166 #ifndef FAR             /* for non-Win16 */
 167 #define FAR
 168 #endif
 169
 170 /******************************************************************************/
 171
 172 /* Java Scalar Types */
 173
 174 #if 0   /* now in jni.h */
 175 typedef short                   jchar;
 176 typedef short                   jshort;
 177 typedef float                   jfloat;
 178 typedef double                  jdouble;
 179 typedef juint                   jsize;
 180 #endif
 181
 182 /* moved from jni.h -- Sun's new jni.h doesn't have this anymore */
 183 #ifdef __cplusplus
 184 typedef class _jobject *jref;
 185 #else
 186 typedef struct _jobject *jref;
 187 #endif
 188
 189 typedef unsigned char   jbool;
 190 typedef char                    jbyte;
 191 typedef short                   jchar;
 192 typedef short                   jshort;
 193 #ifdef IS_64 /* XXX ok for alpha, but not right on all 64-bit architectures */
 194 typedef unsigned int    juint;
 195 typedef int                             jint;
 196 #else
 197 typedef unsigned long   juint;
 198 typedef long                    jint;
 199 #endif
 200
 201 typedef float                   jfloat;
 202 typedef double                  jdouble;
 203
 204 typedef juint                   jsize;
 205
 206
 207 /*******************************************************************************
 208  * jlong : long long (64-bit signed integer type) support.
 209  ******************************************************************************/
 210
 211 /*
 212 ** Bit masking macros.  (n must be <= 31 to be portable)
 213 */
 214 #define JRI_BIT(n)                      ((juint)1 << (n))
 215 #define JRI_BITMASK(n)          (JRI_BIT(n) - 1)
 216
 217 #ifdef HAVE_LONG_LONG
 218
 219 #ifdef OSF1
 220
 221 /* long is default 64-bit on OSF1, -std1 does not allow long long */
 222 typedef long                  jlong;
 223 typedef unsigned long         julong;
 224 #define jlong_MAXINT          0x7fffffffffffffffL
 225 #define jlong_MININT          0x8000000000000000L
 226 #define jlong_ZERO            0x0L
 227
 228 #elif (defined(WIN32) || defined(_WIN32))
 229
 230 typedef LONGLONG              jlong;
 231 typedef DWORDLONG             julong;
 232 #define jlong_MAXINT          0x7fffffffffffffffi64
 233 #define jlong_MININT          0x8000000000000000i64
 234 #define jlong_ZERO            0x0i64
 235
 236 #else
 237
 238 typedef long long             jlong;
 239 typedef unsigned long long    julong;
 240 #define jlong_MAXINT          0x7fffffffffffffffLL
 241 #define jlong_MININT          0x8000000000000000LL
 242 #define jlong_ZERO            0x0LL
 243
 244 #endif
 245
 246 #define jlong_IS_ZERO(a)        ((a) == 0)
 247 #define jlong_EQ(a, b)          ((a) == (b))
 248 #define jlong_NE(a, b)          ((a) != (b))
 249 #define jlong_GE_ZERO(a)        ((a) >= 0)
 250 #define jlong_CMP(a, op, b)     ((a) op (b))
 251
 252 #define jlong_AND(r, a, b)      ((r) = (a) & (b))
 253 #define jlong_OR(r, a, b)       ((r) = (a) | (b))
 254 #define jlong_XOR(r, a, b)      ((r) = (a) ^ (b))
 255 #define jlong_OR2(r, a)         ((r) = (r) | (a))
 256 #define jlong_NOT(r, a)         ((r) = ~(a))
 257
 258 #define jlong_NEG(r, a)         ((r) = -(a))
 259 #define jlong_ADD(r, a, b)      ((r) = (a) + (b))
 260 #define jlong_SUB(r, a, b)      ((r) = (a) - (b))
 261
 262 #define jlong_MUL(r, a, b)      ((r) = (a) * (b))
 263 #define jlong_DIV(r, a, b)      ((r) = (a) / (b))
 264 #define jlong_MOD(r, a, b)      ((r) = (a) % (b))
 265
 266 #define jlong_SHL(r, a, b)      ((r) = (a) << (b))
 267 #define jlong_SHR(r, a, b)      ((r) = (a) >> (b))
 268 #define jlong_USHR(r, a, b)     ((r) = (julong)(a) >> (b))
 269 #define jlong_ISHL(r, a, b)     ((r) = ((jlong)(a)) << (b))
 270
 271 #define jlong_L2I(i, l)         ((i) = (int)(l))
 272 #define jlong_L2UI(ui, l)       ((ui) =(unsigned int)(l))
 273 #define jlong_L2F(f, l)         ((f) = (l))
 274 #define jlong_L2D(d, l)         ((d) = (l))
 275
 276 #define jlong_I2L(l, i)         ((l) = (i))
 277 #define jlong_UI2L(l, ui)       ((l) = (ui))
 278 #define jlong_F2L(l, f)         ((l) = (f))
 279 #define jlong_D2L(l, d)         ((l) = (d))
 280
 281 #define jlong_UDIVMOD(qp, rp, a, b)  \
 282     (*(qp) = ((julong)(a) / (b)), \
 283      *(rp) = ((julong)(a) % (b)))
 284
 285 #else  /* !HAVE_LONG_LONG */
 286
 287 typedef struct {
 288 #ifdef IS_LITTLE_ENDIAN
 289     juint lo, hi;
 290 #else
 291     juint hi, lo;
 292 #endif
 293 } jlong;
 294 typedef jlong                           julong;
 295
 296 extern jlong jlong_MAXINT, jlong_MININT, jlong_ZERO;
 297
 298 #define jlong_IS_ZERO(a)        (((a).hi == 0) && ((a).lo == 0))
 299 #define jlong_EQ(a, b)          (((a).hi == (b).hi) && ((a).lo == (b).lo))
 300 #define jlong_NE(a, b)          (((a).hi != (b).hi) || ((a).lo != (b).lo))
 301 #define jlong_GE_ZERO(a)        (((a).hi >> 31) == 0)
 302
 303 /*
 304  * NB: jlong_CMP and jlong_UCMP work only for strict relationals (<, >).
 305  */
 306 #define jlong_CMP(a, op, b)     (((int32)(a).hi op (int32)(b).hi) ||          \
 307                  (((a).hi == (b).hi) && ((a).lo op (b).lo)))
 308 #define jlong_UCMP(a, op, b)    (((a).hi op (b).hi) ||                    \
 309                  (((a).hi == (b).hi) && ((a).lo op (b).lo)))
 310
 311 #define jlong_AND(r, a, b)      ((r).lo = (a).lo & (b).lo,                    \
 312                  (r).hi = (a).hi & (b).hi)
 313 #define jlong_OR(r, a, b)       ((r).lo = (a).lo | (b).lo,                    \
 314                  (r).hi = (a).hi | (b).hi)
 315 #define jlong_XOR(r, a, b)      ((r).lo = (a).lo ^ (b).lo,                    \
 316                  (r).hi = (a).hi ^ (b).hi)
 317 #define jlong_OR2(r, a)         ((r).lo = (r).lo | (a).lo,                    \
 318                  (r).hi = (r).hi | (a).hi)
 319 #define jlong_NOT(r, a)         ((r).lo = ~(a).lo,                                \
 320                  (r).hi = ~(a).hi)
 321
 322 #define jlong_NEG(r, a)         ((r).lo = -(int32)(a).lo,                     \
 323                  (r).hi = -(int32)(a).hi - ((r).lo != 0))
 324 #define jlong_ADD(r, a, b) {                                              \
 325     jlong _a, _b;                                                         \
 326     _a = a; _b = b;                                                       \
 327     (r).lo = _a.lo + _b.lo;                                               \
 328     (r).hi = _a.hi + _b.hi + ((r).lo < _b.lo);                            \
 329 }
 330
 331 #define jlong_SUB(r, a, b) {                                              \
 332     jlong _a, _b;                                                         \
 333     _a = a; _b = b;                                                       \
 334     (r).lo = _a.lo - _b.lo;                                               \
 335     (r).hi = _a.hi - _b.hi - (_a.lo < _b.lo);                             \
 336 }                                                                         \
 337
 338 /*
 339  * Multiply 64-bit operands a and b to get 64-bit result r.
 340  * First multiply the low 32 bits of a and b to get a 64-bit result in r.
 341  * Then add the outer and inner products to r.hi.
 342  */
 343 #define jlong_MUL(r, a, b) {                                              \
 344     jlong _a, _b;                                                         \
 345     _a = a; _b = b;                                                       \
 346     jlong_MUL32(r, _a.lo, _b.lo);                                         \
 347     (r).hi += _a.hi * _b.lo + _a.lo * _b.hi;                              \
 348 }
 349
 350 /* XXX _jlong_lo16(a) = ((a) << 16 >> 16) is better on some archs (not on mips) */
 351 #define _jlong_lo16(a)          ((a) & JRI_BITMASK(16))
 352 #define _jlong_hi16(a)          ((a) >> 16)
 353
 354 /*
 355  * Multiply 32-bit operands a and b to get 64-bit result r.
 356  * Use polynomial expansion based on primitive field element (1 << 16).
 357  */
 358 #define jlong_MUL32(r, a, b) {                                            \
 359      juint _a1, _a0, _b1, _b0, _y0, _y1, _y2, _y3;                        \
 360      _a1 = _jlong_hi16(a), _a0 = _jlong_lo16(a);                          \
 361      _b1 = _jlong_hi16(b), _b0 = _jlong_lo16(b);                          \
 362      _y0 = _a0 * _b0;                                                     \
 363      _y1 = _a0 * _b1;                                                     \
 364      _y2 = _a1 * _b0;                                                     \
 365      _y3 = _a1 * _b1;                                                     \
 366      _y1 += _jlong_hi16(_y0);                   /* can't carry */         \
 367      _y1 += _y2;                                /* might carry */         \
 368      if (_y1 < _y2) _y3 += 1 << 16;             /* propagate */           \
 369      (r).lo = (_jlong_lo16(_y1) << 16) + _jlong_lo16(_y0);                \
 370      (r).hi = _y3 + _jlong_hi16(_y1);                                     \
 371 }
 372
 373 /*
 374  * Divide 64-bit unsigned operand a by 64-bit unsigned operand b, setting *qp
 375  * to the 64-bit unsigned quotient, and *rp to the 64-bit unsigned remainder.
 376  * Minimize effort if one of qp and rp is null.
 377  */
 378 #define jlong_UDIVMOD(qp, rp, a, b)     jlong_udivmod(qp, rp, a, b)
 379
 380 extern JRI_PUBLIC_API(void)
 381 jlong_udivmod(julong *qp, julong *rp, julong a, julong b);
 382
 383 #define jlong_DIV(r, a, b) {                                              \
 384     jlong _a, _b;                                                         \
 385     juint _negative = (int32)(a).hi < 0;                                  \
 386     if (_negative) {                                                      \
 387     jlong_NEG(_a, a);                                                     \
 388     } else {                                                              \
 389     _a = a;                                                               \
 390     }                                                                     \
 391     if ((int32)(b).hi < 0) {                                              \
 392     _negative ^= 1;                                                       \
 393     jlong_NEG(_b, b);                                                     \
 394     } else {                                                              \
 395     _b = b;                                                               \
 396     }                                                                     \
 397     jlong_UDIVMOD(&(r), 0, _a, _b);                                       \
 398     if (_negative)                                                        \
 399     jlong_NEG(r, r);                                                      \
 400 }
 401
 402 #define jlong_MOD(r, a, b) {                                              \
 403     jlong _a, _b;                                                         \
 404     juint _negative = (int32)(a).hi < 0;                                  \
 405     if (_negative) {                                                      \
 406     jlong_NEG(_a, a);                                                     \
 407     } else {                                                              \
 408     _a = a;                                                               \
 409     }                                                                     \
 410     if ((int32)(b).hi < 0) {                                              \
 411     jlong_NEG(_b, b);                                                     \
 412     } else {                                                              \
 413     _b = b;                                                               \
 414     }                                                                     \
 415     jlong_UDIVMOD(0, &(r), _a, _b);                                       \
 416     if (_negative)                                                        \
 417     jlong_NEG(r, r);                                                      \
 418 }
 419
 420 /*
 421  * NB: b is a juint, not jlong or julong, for the shift ops.
 422  */
 423 #define jlong_SHL(r, a, b) {                                              \
 424     if (b) {                                                              \
 425     jlong _a;                                                             \
 426         _a = a;                                                           \
 427         if ((b) < 32) {                                                   \
 428         (r).lo = _a.lo << (b);                                            \
 429         (r).hi = (_a.hi << (b)) | (_a.lo >> (32 - (b)));                  \
 430     } else {                                                              \
 431         (r).lo = 0;                                                       \
 432         (r).hi = _a.lo << ((b) & 31);                                     \
 433     }                                                                     \
 434     } else {                                                              \
 435     (r) = (a);                                                            \
 436     }                                                                     \
 437 }
 438
 439 /* a is an int32, b is int32, r is jlong */
 440 #define jlong_ISHL(r, a, b) {                                             \
 441     if (b) {                                                              \
 442     jlong _a;                                                             \
 443     _a.lo = (a);                                                          \
 444     _a.hi = 0;                                                            \
 445         if ((b) < 32) {                                                   \
 446         (r).lo = (a) << (b);                                              \
 447         (r).hi = ((a) >> (32 - (b)));                                     \
 448     } else {                                                              \
 449         (r).lo = 0;                                                       \
 450         (r).hi = (a) << ((b) & 31);                                       \
 451     }                                                                     \
 452     } else {                                                              \
 453     (r).lo = (a);                                                         \
 454     (r).hi = 0;                                                           \
 455     }                                                                     \
 456 }
 457
 458 #define jlong_SHR(r, a, b) {                                              \
 459     if (b) {                                                              \
 460     jlong _a;                                                             \
 461         _a = a;                                                           \
 462     if ((b) < 32) {                                                       \
 463         (r).lo = (_a.hi << (32 - (b))) | (_a.lo >> (b));                  \
 464         (r).hi = (int32)_a.hi >> (b);                                     \
 465     } else {                                                              \
 466         (r).lo = (int32)_a.hi >> ((b) & 31);                              \
 467         (r).hi = (int32)_a.hi >> 31;                                      \
 468     }                                                                     \
 469     } else {                                                              \
 470     (r) = (a);                                                            \
 471     }                                                                     \
 472 }
 473
 474 #define jlong_USHR(r, a, b) {                                             \
 475     if (b) {                                                              \
 476     jlong _a;                                                             \
 477         _a = a;                                                           \
 478     if ((b) < 32) {                                                       \
 479         (r).lo = (_a.hi << (32 - (b))) | (_a.lo >> (b));                  \
 480         (r).hi = _a.hi >> (b);                                            \
 481     } else {                                                              \
 482         (r).lo = _a.hi >> ((b) & 31);                                     \
 483         (r).hi = 0;                                                       \
 484     }                                                                     \
 485     } else {                                                              \
 486     (r) = (a);                                                            \
 487     }                                                                     \
 488 }
 489
 490 #define jlong_L2I(i, l)         ((i) = (l).lo)
 491 #define jlong_L2UI(ui, l)       ((ui) = (l).lo)
 492 #define jlong_L2F(f, l)         { double _d; jlong_L2D(_d, l); (f) = (float) _d; }
 493
 494 #define jlong_L2D(d, l) {                                                 \
 495     int32 _negative;                                                      \
 496     jlong _absval;                                                        \
 497                                                                           \
 498     _negative = (l).hi >> 31;                                             \
 499     if (_negative) {                                                      \
 500     jlong_NEG(_absval, l);                                                \
 501     } else {                                                              \
 502     _absval = l;                                                          \
 503     }                                                                     \
 504     (d) = (double)_absval.hi * 4.294967296e9 + _absval.lo;                \
 505     if (_negative)                                                        \
 506     (d) = -(d);                                                           \
 507 }
 508
 509 #define jlong_I2L(l, i)         ((l).hi = (i) >> 31, (l).lo = (i))
 510 #define jlong_UI2L(l, ui)       ((l).hi = 0, (l).lo = (ui))
 511 #define jlong_F2L(l, f)         { double _d = (double) f; jlong_D2L(l, _d); }
 512
 513 #define jlong_D2L(l, d) {                                                 \
 514     int _negative;                                                        \
 515     double _absval, _d_hi;                                                \
 516     jlong _lo_d;                                                          \
 517                                                                           \
 518     _negative = ((d) < 0);                                                \
 519     _absval = _negative ? -(d) : (d);                                     \
 520                                                                           \
 521     (l).hi = (juint)(_absval / 4.294967296e9);                            \
 522     (l).lo = 0;                                                           \
 523     jlong_L2D(_d_hi, l);                                                  \
 524     _absval -= _d_hi;                                                     \
 525     _lo_d.hi = 0;                                                         \
 526     if (_absval < 0) {                                                    \
 527     _lo_d.lo = (juint) -_absval;                                          \
 528     jlong_SUB(l, l, _lo_d);                                               \
 529     } else {                                                              \
 530     _lo_d.lo = (juint) _absval;                                           \
 531     jlong_ADD(l, l, _lo_d);                                               \
 532     }                                                                     \
 533                                                                           \
 534     if (_negative)                                                        \
 535     jlong_NEG(l, l);                                                      \
 536 }
 537
 538 #endif /* !HAVE_LONG_LONG */
 539
 540 /******************************************************************************/
 541
 542 #ifdef HAVE_ALIGNED_LONGLONGS
 543 #define JRI_GET_INT64(_t,_addr) ( ((_t).x[0] = ((jint*)(_addr))[0]), \
 544                               ((_t).x[1] = ((jint*)(_addr))[1]),      \
 545                               (_t).l )
 546 #define JRI_SET_INT64(_t, _addr, _v) ( (_t).l = (_v),                \
 547                                    ((jint*)(_addr))[0] = (_t).x[0], \
 548                                    ((jint*)(_addr))[1] = (_t).x[1] )
 549 #else
 550 #define JRI_GET_INT64(_t,_addr) (*(jlong*)(_addr))
 551 #define JRI_SET_INT64(_t, _addr, _v) (*(jlong*)(_addr) = (_v))
 552 #endif
 553
 554 /* If double's must be aligned on doubleword boundaries then define this */
 555 #ifdef HAVE_ALIGNED_DOUBLES
 556 #define JRI_GET_DOUBLE(_t,_addr) ( ((_t).x[0] = ((jint*)(_addr))[0]), \
 557                                ((_t).x[1] = ((jint*)(_addr))[1]),      \
 558                                (_t).d )
 559 #define JRI_SET_DOUBLE(_t, _addr, _v) ( (_t).d = (_v),                \
 560                                     ((jint*)(_addr))[0] = (_t).x[0], \
 561                                     ((jint*)(_addr))[1] = (_t).x[1] )
 562 #else
 563 #define JRI_GET_DOUBLE(_t,_addr) (*(jdouble*)(_addr))
 564 #define JRI_SET_DOUBLE(_t, _addr, _v) (*(jdouble*)(_addr) = (_v))
 565 #endif
 566
 567 /******************************************************************************/
 568 #ifdef __cplusplus
 569 }
 570 #endif
 571 #endif /* JRI_MD_H */
 572 /******************************************************************************/