Re: [Tinycc-devel] constructor/destructor support

[Herman ten Brugge]

I created the windows constructor patch. See attached patch.

I had a good night sleep and realized that I could copy the .init/.fini 
arrays + relocations to the text section and then modify the win32/lib 
code to call these functions.
I implemented this and it works (even for dll's). So testcase 108 now 
runs fine on windows.

The testcode for dll's is also attached (d.c and e.c).
To compile this do:
tcc.exe -g -shared -o libe.dll e.c
tcc.exe -g -o d.exe d.c -L. -le

Running d.exe should result in:
constructor1
constructor
main
destructor
destructor1

The mingw compiler now also works. The problem was that you at least 
have to call 1 functions in the dll.
So compiling with:
x86_64-w64-mingw32-gcc -fPIC -shared -o libe.dll e.c
x86_64-w64-mingw32-gcc d.c -o d -L. -le

Running d.exe has the same result as above.

    Herman


On 2019-10-29 06:51, Christian Jullien wrote:
> Replying to my own question, on Windows gcc does support ctor/dtor so, IHMO, 
> tcc should do the same.
>
> Taking Herman's 108_constructor.c gcc 9.1 Mingw64 gives:
>
> C:>gcc foo.c -o foo.exe
>
> C:>file foo.exe
> foo.exe: PE32+ executable (console) x86-64, for MS Windows
>
> C:>foo
> constructor
> main
> destructor
>
>
>
> -----Original Message-----
> From: Tinycc-devel [mailto:tinycc-devel-bounces+eligis=address@hidden] On 
> Behalf Of Michael Matz
> Sent: Monday, October 28, 2019 10:40
> To: Herman ten Brugge via Tinycc-devel
> Cc: Herman ten Brugge
> Subject: Re: [Tinycc-devel] constructor/destructor support
>
> Hello,
>
> On Fri, 25 Oct 2019, Herman ten Brugge via Tinycc-devel wrote:
>
> > I implemented constructors and destructors. This was the one thing I was
> > missing for my own project.
> >
> > See the attachment.
> >
> > Can I push it?
> Could you please refactor some things?  In particular the duplicate code
> of add_init_array and add_fini_array: instead add just one function
> (add_sec_array?) that takes the name of the section.  Also if you test
> the section size for being != 0 before creating the dynamic tags
> (DT_INIT* and friends) it might be that you can avoid having to add the
> 'create' argument to find_section; it would be nice to not have to have
> it.
>
> Otherwise, looks good.  Thanks for the work.  (And yeah, bonus points for
> Windows and -run support :) ).
>
>
> Ciao,
> Michael.
>
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win_contructor.patch
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e.c
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d.c
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