Compiler, Language Tip

이곳엔 앞으로 Compiler 및 Language 에 대해 작성한다.

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* Using and Porting the GNU Compiler Collection (GCC)
Source:
http://sunsite.ualberta.ca/Documentation/Gnu/gcc-3.0.2/html_mono/gcc.html
* Welcome to the IBM Linux compiler information center (XL C/C++)
Source:
http://publib.boulder.ibm.com/infocenter/lnxpcomp/v8v101/index.jsp
* MS Visual Studio2010, Visual C++ 10 and C++0x White Paper (Korean)
Source:
http://download.microsoft.com/download/1/9/4/194B6F74-8A72-482D-AF0E-31CE9D855372/VisualC.PDF
* MS Visual Studio 2010 (C++0x Only)
Source:
http://vsts2010.net/category/Visual%20Studio%202010
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* Byte Alignment(Pading Alignment)
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1. GNU/Linux
typedef struct _TypeA {
    int a;
    long b;
    double c;
    char d[10];
    unsigned short e;
}__attribute__(packed) DATA;

2. MS Visual C++
#pragma pack(push)
#pragma pack(1)
typedef struct _TypeA {
    int a;
    long b;
    double c;
    char d[10];
    unsigned short e;
}__attribute__(packed) DATA;
#pragma pack(0)
#pragma pack(pop)

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* Labeled Element Extension
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1. ANSI-C standard extension
DATA data = {
    .a = 10,
    .b = 11,
    .c = 12,
};


2. GCC Labeled Element Extension
DATA data = {
    a: 10,
    b: 11,
    c: 12
};

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* Bitwise Operation
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#include  "stdio.h"

void main(void) {
    // 0xFF 0xE0 (2byte Big-endian)
    printf( "Little-Endian: %d", (0xe0 << 8 | 0xff) );
    /*
    * 4bytes Big-endian to Little-endian
    int val = ((int)0x01 << 24) & 0xFF000000;
    val |= ((int)0x01 << 16) & 0xFF0000;
    val |= ((int)0x01 << 8) & 0xFF00;
    val |= ((int)0x01);
    */
}

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Cheers,
June