source: src/tests/gccExtensions.c @ 23c4aa8

// 
// Cforall Version 1.0.0 Copyright (C) 2016 University of Waterloo
//
// The contents of this file are covered under the licence agreement in the
// file "LICENCE" distributed with Cforall.
// 
// gccExtensions.c -- 
// 
// Author           : Peter A. Buhr
// Created On       : Sun Aug 14 17:28:17 2016
// Last Modified By : Peter A. Buhr
// Last Modified On : Wed Aug 17 09:26:50 2016
// Update Count     : 10
// 

extern int x asm( "xx" );

int main(int argc, char const *argv[]) {
        // asm extensions

        asm( "nop" );
        __asm( "nop" );
        __asm__( "nop" );

        static int y asm( "yy" );
#ifdef __CFA__
        static * int z asm( "zz" );                                                     // CFA declaration
#endif // __CFA__

        int src;
        int dst;

        asm volatile ( "mov %1, %0\n\t"
                                   "add $1, %0" : : : );

        asm volatile ( "mov %1, %0\n\t"
                                   "add $1, %0"
                                   : "=" "r" (dst));

        asm volatile ( "mov %1, %0\n\t"
                                   "add $1, %0"
                                   : "=r" (dst)
                                   : "r" (src));

        asm ( "mov %1, %0\n\t"
                  "add $1, %0"
                  : "=r" (dst), "=r" (src)
                  : [src] "r" (dst)
                  : "r0");

  L1: L2:
        asm goto ( "frob %%r5, %1; jc %l[L1]; mov (%2), %%r5"
                           : /* No outputs. */
                           : "r"(src), "r"(&dst)
                           : "r5", "memory"
                           : L1, L2 );

        // alternative type/qualifer names

        __complex__ c1;
        _Complex c2;

        const int i1;
        __const int i2;
        __const__ int i3;

        __inline int f1() {}
        __inline__ int f2() {}

        __signed s1;
        __signed s2;

        __volatile int v1;
        __volatile__ int v2;

        // symbol table attributes

        __typeof(s1) t1;
        __typeof__(s1) t2;

        // strange extension qualifier

        __extension__ const int ex;
        struct S {
                __extension__ int a, b, c;
        };
        int i = __extension__ 3;
        __extension__ int a, b, c;
        __extension__ a, __extension__ b, __extension__ c;
        __extension__ a = __extension__ b + __extension__ c;
        __extension__ a = __extension__ ( __extension__ b + __extension__ c );

        // attributes

        __attribute__(()) int a1;
        const __attribute(()) int a2;
        const static __attribute(()) int a3;
        const static int __attribute(()) a4;
        const static int a5 __attribute(());
        const static int a6, __attribute(()) a7;

        int * __attribute(()) p1;
        int (* __attribute(()) p2);
//      int (__attribute(()) (p3));
//      int ( __attribute(()) (* __attribute(()) p4));

        struct __attribute(()) s1;
        struct __attribute(()) s2 { int i; };
        struct __attribute(()) s3 { int i; } x1, __attribute(()) y1;
        struct __attribute(()) s4 { int i; } x2, y2 __attribute(());

        int m1 [10] __attribute(());
        int m2 [10][10] __attribute(());
        int __attribute(()) m3 [10][10];
//      int ( __attribute(()) m4 [10] )[10];

        return 0;
}

// Local Variables: //
// tab-width: 4 //
// compile-command: "cfa gccExtensions.c" //
// End: //