view dmd2/port.h @ 1047:6bb04dbee21f

Some calling convention work for x86-64: - Implement x86-64 extern(C), hopefully correctly. - Tried to be a bit smarter about extern(D) while I was there. Interestingly, this code seems to be generating more efficient code than gcc and llvm-gcc in some edge cases, like returning a `{ [7 x i8] }` loaded from a stack slot from an extern(C) function. (gcc generates 7 1-byte loads, while this code generates a 4-byte, a 2-byte and a 1-byte load) I also added some changes to make sure structs being returned from functions or passed in as parameters are stored in memory where the rest of the backend seems to expect them to be. These should be removed when support for first-class aggregates improves.
author Frits van Bommel <fvbommel wxs.nl>
date Fri, 06 Mar 2009 16:00:47 +0100
parents f04dde6e882c
children
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// Copyright (c) 1999-2002 by Digital Mars
// All Rights Reserved
// written by Walter Bright
// www.digitalmars.com

#ifndef PORT_H
#define PORT_H

// Portable wrapper around compiler/system specific things.
// The idea is to minimize #ifdef's in the app code.

#ifndef TYPEDEFS
#define TYPEDEFS

#include <wchar.h>

#if _MSC_VER
typedef __int64 longlong;
typedef unsigned __int64 ulonglong;
#else
typedef long long longlong;
typedef unsigned long long ulonglong;
#endif

#endif

typedef double d_time;

struct Port
{
    static double nan;
    static double infinity;
    static double dbl_max;
    static double dbl_min;

#if __GNUC__
    // These conflict with macros in math.h, should rename them
    #undef isnan
    #undef isfinite
    #undef isinfinity
    #undef signbit
#endif
    static int isNan(double);
    static int isFinite(double);
    static int isInfinity(double);
    static int Signbit(double);

    static double floor(double);
    static double pow(double x, double y);

    static ulonglong strtoull(const char *p, char **pend, int base);

    static char *ull_to_string(char *buffer, ulonglong ull);
    static wchar_t *ull_to_string(wchar_t *buffer, ulonglong ull);

    // Convert ulonglong to double
    static double ull_to_double(ulonglong ull);

    // Get locale-dependent list separator
    static char *list_separator();
    static wchar_t *wlist_separator();
};

#endif