[Issue 1134] New: incorrect calling convention used

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=1134

           Summary: incorrect calling convention used
           Product: D
           Version: 1.011
          Platform: PC
        OS/Version: Windows
            Status: NEW
          Keywords: wrong-code
          Severity: major
          Priority: P1
         Component: DMD
        AssignedTo: bugzilla at digitalmars.com
        ReportedBy: CppCoder at gmail.com


the following code compiles to the asm after it.  Notice that only two
parameters are pushed in the call to dllMain, when there should be three.

int main( char [][]args )
{
        uint a;
        uint b;
        uint c;
        extern (Windows) BOOL function( HMODULE hinstDLL, DWORD fdwReason,
LPVOID lpvReserved ) dllMain;

        a = 1;
        b = 2;
        c = 3;

        dllMain = cast(typeof(dllMain))(a + b);
        asm { int 3; } //as a reference point
        dllMain( cast(HMODULE)c, DLL_PROCESS_ATTACH, null );

        return 0;
}

00402010  /$ C8 100000      ENTER 10,0
00402014  |. 53             PUSH EBX
00402015  |. CC             INT3
00402016  |. 31C0           XOR EAX,EAX
00402018  |. 8945 F0        MOV DWORD PTR SS:[EBP-10],EAX
0040201B  |. 8945 F4        MOV DWORD PTR SS:[EBP-C],EAX
0040201E  |. 8945 F8        MOV DWORD PTR SS:[EBP-8],EAX
00402021  |. 8945 FC        MOV DWORD PTR SS:[EBP-4],EAX
00402024  |. B9 01000000    MOV ECX,1
00402029  |. 894D F0        MOV DWORD PTR SS:[EBP-10],ECX
0040202C  |. BA 02000000    MOV EDX,2
00402031  |. 8955 F4        MOV DWORD PTR SS:[EBP-C],EDX
00402034  |. C745 F8 030000>MOV DWORD PTR SS:[EBP-8],3
0040203B  |. 8D1C11         LEA EBX,DWORD PTR DS:[ECX+EDX]
0040203E  |. 895D FC        MOV DWORD PTR SS:[EBP-4],EBX
00402041  |. CC             INT3
00402042  |. FF75 F8        PUSH DWORD PTR SS:[EBP-8]  ;push #1 (c)
00402045  |. 51             PUSH ECX                   ;push #2
(DLL_PROCESS_ATTACH)
00402046  |. FF55 FC        CALL DWORD PTR SS:[EBP-4] ;call dllMain
00402049  |. 31C0           XOR EAX,EAX
0040204B  |. 5B             POP EBX
0040204C  |. C9             LEAVE
0040204D  \. C3             RETN


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