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/* $Xorg: jri_md.h,v 1.3 2000/08/17 19:55:01 cpqbld Exp $ */
/* -*- Mode: C; tab-width: 4; -*- */
/*******************************************************************************
* Java Runtime Interface - Machine Dependent Types
* Copyright (c) 1996 Netscape Communications Corporation. All rights reserved.
******************************************************************************/
#ifndef JRI_MD_H
#define JRI_MD_H
#include <assert.h>
#ifdef __cplusplus
extern "C" {
#endif
/*******************************************************************************
* WHAT'S UP WITH THIS FILE?
*
* This is where we define the mystical JRI_PUBLIC_API macro that works on all
* platforms. If you're running with Visual C++, Symantec C, or Borland's
* development environment on the PC, you're all set. Or if you're on the Mac
* with Metrowerks, Symantec or MPW with SC you're ok too. For UNIX it shouldn't
* matter.
*
* On UNIX though you probably care about a couple of other symbols though:
* IS_LITTLE_ENDIAN must be defined for little-endian systems
* HAVE_LONG_LONG must be defined on systems that have 'long long' integers
* HAVE_ALIGNED_LONGLONGS must be defined if long-longs must be 8 byte aligned
* HAVE_ALIGNED_DOUBLES must be defined if doubles must be 8 byte aligned
* IS_64 must be defined on 64-bit machines (like Dec Alpha)
******************************************************************************/
/* DLL Entry modifiers... */
/* PC */
#if defined(XP_PC) || defined(_WINDOWS) || defined(WIN32) || defined(_WIN32)
# include <windows.h>
# if defined(_MSC_VER)
# if defined(WIN32) || defined(_WIN32)
# define JRI_PUBLIC_API(ResultType) _declspec(dllexport) ResultType
# define JRI_CALLBACK
# else /* !_WIN32 */
# if defined(_WINDLL)
# define JRI_PUBLIC_API(ResultType) ResultType __cdecl __export __loadds
# define JRI_CALLBACK __loadds
# else /* !WINDLL */
# define JRI_PUBLIC_API(ResultType) ResultType __cdecl __export
# define JRI_CALLBACK __export
# endif /* !WINDLL */
# endif /* !_WIN32 */
# elif defined(__BORLANDC__)
# if defined(WIN32) || defined(_WIN32)
# define JRI_PUBLIC_API(ResultType) __export ResultType
# define JRI_CALLBACK
# else /* !_WIN32 */
# define JRI_PUBLIC_API(ResultType) ResultType _cdecl _export _loadds
# define JRI_CALLBACK _loadds
# endif
# else
# error Unsupported PC development environment.
# endif
# ifndef IS_LITTLE_ENDIAN
# define IS_LITTLE_ENDIAN
# endif
/* Mac */
#elif macintosh || Macintosh || THINK_C
# if defined(__MWERKS__) /* Metrowerks */
# if !__option(enumsalwaysint)
# error You need to define 'Enums Always Int' for your project.
# endif
# if defined(GENERATING68K) && !GENERATINGCFM
# if !__option(fourbyteints)
# error You need to define 'Struct Alignment: 68k' for your project.
# endif
# endif /* !GENERATINGCFM */
# elif defined(__SC__) /* Symantec */
# error What are the Symantec defines? (warren@netscape.com)
# elif macintosh && applec /* MPW */
# error Please upgrade to the latest MPW compiler (SC).
# else
# error Unsupported Mac development environment.
# endif
# define JRI_PUBLIC_API(ResultType) ResultType
# define JRI_CALLBACK
/* Unix or else */
#else
# define JRI_PUBLIC_API(ResultType) ResultType
# define JRI_CALLBACK
#endif
#ifndef FAR /* for non-Win16 */
#define FAR
#endif
/******************************************************************************/
/* Java Scalar Types */
typedef unsigned char jbool;
typedef char jbyte;
typedef short jchar;
typedef short jshort;
#ifdef IS_64 /* XXX ok for alpha, but not right on all 64-bit architectures */
typedef unsigned int juint;
typedef int jint;
#else
typedef unsigned long juint;
typedef long jint;
#endif
typedef float jfloat;
typedef double jdouble;
typedef juint jsize;
/*******************************************************************************
* jlong : long long (64-bit signed integer type) support.
******************************************************************************/
/*
** Bit masking macros. (n must be <= 31 to be portable)
*/
#define JRI_BIT(n) ((juint)1 << (n))
#define JRI_BITMASK(n) (JRI_BIT(n) - 1)
#ifdef HAVE_LONG_LONG
#if !(defined(WIN32) || defined(_WIN32))
typedef long long jlong;
typedef unsigned long long julong;
#define jlong_MAXINT 0x7fffffffffffffffLL
#define jlong_MININT 0x8000000000000000LL
#define jlong_ZERO 0x0LL
#else
typedef LONGLONG jlong;
typedef DWORDLONG julong;
#define jlong_MAXINT 0x7fffffffffffffffi64
#define jlong_MININT 0x8000000000000000i64
#define jlong_ZERO 0x0i64
#endif
#define jlong_IS_ZERO(a) ((a) == 0)
#define jlong_EQ(a, b) ((a) == (b))
#define jlong_NE(a, b) ((a) != (b))
#define jlong_GE_ZERO(a) ((a) >= 0)
#define jlong_CMP(a, op, b) ((a) op (b))
#define jlong_AND(r, a, b) ((r) = (a) & (b))
#define jlong_OR(r, a, b) ((r) = (a) | (b))
#define jlong_XOR(r, a, b) ((r) = (a) ^ (b))
#define jlong_OR2(r, a) ((r) = (r) | (a))
#define jlong_NOT(r, a) ((r) = ~(a))
#define jlong_NEG(r, a) ((r) = -(a))
#define jlong_ADD(r, a, b) ((r) = (a) + (b))
#define jlong_SUB(r, a, b) ((r) = (a) - (b))
#define jlong_MUL(r, a, b) ((r) = (a) * (b))
#define jlong_DIV(r, a, b) ((r) = (a) / (b))
#define jlong_MOD(r, a, b) ((r) = (a) % (b))
#define jlong_SHL(r, a, b) ((r) = (a) << (b))
#define jlong_SHR(r, a, b) ((r) = (a) >> (b))
#define jlong_USHR(r, a, b) ((r) = (julong)(a) >> (b))
#define jlong_ISHL(r, a, b) ((r) = ((jlong)(a)) << (b))
#define jlong_L2I(i, l) ((i) = (int)(l))
#define jlong_L2UI(ui, l) ((ui) =(unsigned int)(l))
#define jlong_L2F(f, l) ((f) = (l))
#define jlong_L2D(d, l) ((d) = (l))
#define jlong_I2L(l, i) ((l) = (i))
#define jlong_UI2L(l, ui) ((l) = (ui))
#define jlong_F2L(l, f) ((l) = (f))
#define jlong_D2L(l, d) ((l) = (d))
#define jlong_UDIVMOD(qp, rp, a, b) \
(*(qp) = ((julong)(a) / (b)), \
*(rp) = ((julong)(a) % (b)))
#else /* !HAVE_LONG_LONG */
typedef struct {
#ifdef IS_LITTLE_ENDIAN
juint lo, hi;
#else
juint hi, lo;
#endif
} jlong;
typedef jlong julong;
extern jlong jlong_MAXINT, jlong_MININT, jlong_ZERO;
#define jlong_IS_ZERO(a) (((a).hi == 0) && ((a).lo == 0))
#define jlong_EQ(a, b) (((a).hi == (b).hi) && ((a).lo == (b).lo))
#define jlong_NE(a, b) (((a).hi != (b).hi) || ((a).lo != (b).lo))
#define jlong_GE_ZERO(a) (((a).hi >> 31) == 0)
/*
* NB: jlong_CMP and jlong_UCMP work only for strict relationals (<, >).
*/
#define jlong_CMP(a, op, b) (((int32)(a).hi op (int32)(b).hi) || \
(((a).hi == (b).hi) && ((a).lo op (b).lo)))
#define jlong_UCMP(a, op, b) (((a).hi op (b).hi) || \
(((a).hi == (b).hi) && ((a).lo op (b).lo)))
#define jlong_AND(r, a, b) ((r).lo = (a).lo & (b).lo, \
(r).hi = (a).hi & (b).hi)
#define jlong_OR(r, a, b) ((r).lo = (a).lo | (b).lo, \
(r).hi = (a).hi | (b).hi)
#define jlong_XOR(r, a, b) ((r).lo = (a).lo ^ (b).lo, \
(r).hi = (a).hi ^ (b).hi)
#define jlong_OR2(r, a) ((r).lo = (r).lo | (a).lo, \
(r).hi = (r).hi | (a).hi)
#define jlong_NOT(r, a) ((r).lo = ~(a).lo, \
(r).hi = ~(a).hi)
#define jlong_NEG(r, a) ((r).lo = -(int32)(a).lo, \
(r).hi = -(int32)(a).hi - ((r).lo != 0))
#define jlong_ADD(r, a, b) { \
jlong _a, _b; \
_a = a; _b = b; \
(r).lo = _a.lo + _b.lo; \
(r).hi = _a.hi + _b.hi + ((r).lo < _b.lo); \
}
#define jlong_SUB(r, a, b) { \
jlong _a, _b; \
_a = a; _b = b; \
(r).lo = _a.lo - _b.lo; \
(r).hi = _a.hi - _b.hi - (_a.lo < _b.lo); \
} \
/*
* Multiply 64-bit operands a and b to get 64-bit result r.
* First multiply the low 32 bits of a and b to get a 64-bit result in r.
* Then add the outer and inner products to r.hi.
*/
#define jlong_MUL(r, a, b) { \
jlong _a, _b; \
_a = a; _b = b; \
jlong_MUL32(r, _a.lo, _b.lo); \
(r).hi += _a.hi * _b.lo + _a.lo * _b.hi; \
}
/* XXX _jlong_lo16(a) = ((a) << 16 >> 16) is better on some archs (not on mips) */
#define _jlong_lo16(a) ((a) & JRI_BITMASK(16))
#define _jlong_hi16(a) ((a) >> 16)
/*
* Multiply 32-bit operands a and b to get 64-bit result r.
* Use polynomial expansion based on primitive field element (1 << 16).
*/
#define jlong_MUL32(r, a, b) { \
juint _a1, _a0, _b1, _b0, _y0, _y1, _y2, _y3; \
_a1 = _jlong_hi16(a), _a0 = _jlong_lo16(a); \
_b1 = _jlong_hi16(b), _b0 = _jlong_lo16(b); \
_y0 = _a0 * _b0; \
_y1 = _a0 * _b1; \
_y2 = _a1 * _b0; \
_y3 = _a1 * _b1; \
_y1 += _jlong_hi16(_y0); /* can't carry */ \
_y1 += _y2; /* might carry */ \
if (_y1 < _y2) _y3 += 1 << 16; /* propagate */ \
(r).lo = (_jlong_lo16(_y1) << 16) + _jlong_lo16(_y0); \
(r).hi = _y3 + _jlong_hi16(_y1); \
}
/*
* Divide 64-bit unsigned operand a by 64-bit unsigned operand b, setting *qp
* to the 64-bit unsigned quotient, and *rp to the 64-bit unsigned remainder.
* Minimize effort if one of qp and rp is null.
*/
#define jlong_UDIVMOD(qp, rp, a, b) jlong_udivmod(qp, rp, a, b)
extern JRI_PUBLIC_API(void)
jlong_udivmod(julong *qp, julong *rp, julong a, julong b);
#define jlong_DIV(r, a, b) { \
jlong _a, _b; \
juint _negative = (int32)(a).hi < 0; \
if (_negative) { \
jlong_NEG(_a, a); \
} else { \
_a = a; \
} \
if ((int32)(b).hi < 0) { \
_negative ^= 1; \
jlong_NEG(_b, b); \
} else { \
_b = b; \
} \
jlong_UDIVMOD(&(r), 0, _a, _b); \
if (_negative) \
jlong_NEG(r, r); \
}
#define jlong_MOD(r, a, b) { \
jlong _a, _b; \
juint _negative = (int32)(a).hi < 0; \
if (_negative) { \
jlong_NEG(_a, a); \
} else { \
_a = a; \
} \
if ((int32)(b).hi < 0) { \
jlong_NEG(_b, b); \
} else { \
_b = b; \
} \
jlong_UDIVMOD(0, &(r), _a, _b); \
if (_negative) \
jlong_NEG(r, r); \
}
/*
* NB: b is a juint, not jlong or julong, for the shift ops.
*/
#define jlong_SHL(r, a, b) { \
if (b) { \
jlong _a; \
_a = a; \
if ((b) < 32) { \
(r).lo = _a.lo << (b); \
(r).hi = (_a.hi << (b)) | (_a.lo >> (32 - (b))); \
} else { \
(r).lo = 0; \
(r).hi = _a.lo << ((b) & 31); \
} \
} else { \
(r) = (a); \
} \
}
/* a is an int32, b is int32, r is jlong */
#define jlong_ISHL(r, a, b) { \
if (b) { \
jlong _a; \
_a.lo = (a); \
_a.hi = 0; \
if ((b) < 32) { \
(r).lo = (a) << (b); \
(r).hi = ((a) >> (32 - (b))); \
} else { \
(r).lo = 0; \
(r).hi = (a) << ((b) & 31); \
} \
} else { \
(r).lo = (a); \
(r).hi = 0; \
} \
}
#define jlong_SHR(r, a, b) { \
if (b) { \
jlong _a; \
_a = a; \
if ((b) < 32) { \
(r).lo = (_a.hi << (32 - (b))) | (_a.lo >> (b)); \
(r).hi = (int32)_a.hi >> (b); \
} else { \
(r).lo = (int32)_a.hi >> ((b) & 31); \
(r).hi = (int32)_a.hi >> 31; \
} \
} else { \
(r) = (a); \
} \
}
#define jlong_USHR(r, a, b) { \
if (b) { \
jlong _a; \
_a = a; \
if ((b) < 32) { \
(r).lo = (_a.hi << (32 - (b))) | (_a.lo >> (b)); \
(r).hi = _a.hi >> (b); \
} else { \
(r).lo = _a.hi >> ((b) & 31); \
(r).hi = 0; \
} \
} else { \
(r) = (a); \
} \
}
#define jlong_L2I(i, l) ((i) = (l).lo)
#define jlong_L2UI(ui, l) ((ui) = (l).lo)
#define jlong_L2F(f, l) { double _d; jlong_L2D(_d, l); (f) = (float) _d; }
#define jlong_L2D(d, l) { \
int32 _negative; \
jlong _absval; \
\
_negative = (l).hi >> 31; \
if (_negative) { \
jlong_NEG(_absval, l); \
} else { \
_absval = l; \
} \
(d) = (double)_absval.hi * 4.294967296e9 + _absval.lo; \
if (_negative) \
(d) = -(d); \
}
#define jlong_I2L(l, i) ((l).hi = (i) >> 31, (l).lo = (i))
#define jlong_UI2L(l, ui) ((l).hi = 0, (l).lo = (ui))
#define jlong_F2L(l, f) { double _d = (double) f; jlong_D2L(l, _d); }
#define jlong_D2L(l, d) { \
int _negative; \
double _absval, _d_hi; \
jlong _lo_d; \
\
_negative = ((d) < 0); \
_absval = _negative ? -(d) : (d); \
\
(l).hi = (juint)(_absval / 4.294967296e9); \
(l).lo = 0; \
jlong_L2D(_d_hi, l); \
_absval -= _d_hi; \
_lo_d.hi = 0; \
if (_absval < 0) { \
_lo_d.lo = (juint) -_absval; \
jlong_SUB(l, l, _lo_d); \
} else { \
_lo_d.lo = (juint) _absval; \
jlong_ADD(l, l, _lo_d); \
} \
\
if (_negative) \
jlong_NEG(l, l); \
}
#endif /* !HAVE_LONG_LONG */
/******************************************************************************/
/*
** JDK Stuff -- This stuff is still needed while we're using the JDK
** dynamic linking strategy to call native methods.
*/
typedef union JRI_JDK_stack_item {
/* Non pointer items */
jint i;
jfloat f;
jint o;
/* Pointer items */
void *h;
void *p;
unsigned char *addr;
#ifdef IS_64
double d;
long l; /* == 64bits! */
#endif
} JRI_JDK_stack_item;
typedef union JRI_JDK_Java8Str {
jint x[2];
jdouble d;
jlong l;
void *p;
float f;
} JRI_JDK_Java8;
#ifdef HAVE_ALIGNED_LONGLONGS
#define JRI_GET_INT64(_t,_addr) ( ((_t).x[0] = ((jint*)(_addr))[0]), \
((_t).x[1] = ((jint*)(_addr))[1]), \
(_t).l )
#define JRI_SET_INT64(_t, _addr, _v) ( (_t).l = (_v), \
((jint*)(_addr))[0] = (_t).x[0], \
((jint*)(_addr))[1] = (_t).x[1] )
#else
#define JRI_GET_INT64(_t,_addr) (*(jlong*)(_addr))
#define JRI_SET_INT64(_t, _addr, _v) (*(jlong*)(_addr) = (_v))
#endif
/* If double's must be aligned on doubleword boundaries then define this */
#ifdef HAVE_ALIGNED_DOUBLES
#define JRI_GET_DOUBLE(_t,_addr) ( ((_t).x[0] = ((jint*)(_addr))[0]), \
((_t).x[1] = ((jint*)(_addr))[1]), \
(_t).d )
#define JRI_SET_DOUBLE(_t, _addr, _v) ( (_t).d = (_v), \
((jint*)(_addr))[0] = (_t).x[0], \
((jint*)(_addr))[1] = (_t).x[1] )
#else
#define JRI_GET_DOUBLE(_t,_addr) (*(jdouble*)(_addr))
#define JRI_SET_DOUBLE(_t, _addr, _v) (*(jdouble*)(_addr) = (_v))
#endif
/******************************************************************************/
#ifdef __cplusplus
}
#endif
#endif /* JRI_MD_H */
/******************************************************************************/
|
