llvm dev - Feb 2012 - [LLVMdev] x86 asm dllexport output for mingw targets

It seems that the DLL export directives for __cdecl and __stdcall 
functions are not correctly written in asm output.

For example, when declaring a function like this:

__declspec(dllexport) int __cdecl exportFunc1(int c);


ASM output is:


	.def	 _exportFunc1;
	.scl	2;
	.type	32;
	.endef
	.text
	.globl	_exportFunc1
	.align	16, 0x90
_exportFunc1:
	movl	4(%esp), %eax
	ret


	.section	.drectve,"r"
	.ascii	 " -export:_exportFunc1"



GNU assembler fails with the message that it can't find the symbol 
_exportFunc1. When removing the leading underscores
("-export:exportFunc1") GAS is happy. This is also how GCC for mingw 
behaves.
I can write a small patch for this but I just wanted to know if I am on 
the right path ...

Alen,
> It seems that the DLL export directives for __cdecl and __stdcall
> functions are not correctly written in asm output.
So, this is for all functions then, right? :)

-- 
With best regards, Anton Korobeynikov
Faculty of Mathematics and Mechanics, Saint Petersburg State University

On 7.2.2012 13:25, Anton Korobeynikov wrote:
> Alen,
>
>> It seems that the DLL export directives for __cdecl and __stdcall
>> functions are not correctly written in asm output.
> So, this is for all functions then, right? :)
>
Well, __fastcall is working. That's because such functions have no 
preceding underscore but a '@'.

@exportFunc1 at 4

Just a note to my previous mail:
Actually, it's GNU ld which reports this error and not GAS.

regards,
Alen