On Monday, 9 April 2012 at 19:59:18 UTC, Iain Buclaw wrote:
On 9 April 2012 20:37, <"Timo Westkämper\"
<timo.westkam...@gmail.com>"@puremagic.com> wrote:
On Monday, 9 April 2012 at 15:14:45 UTC, Ellery Newcomer wrote:
Well, if you're really hankering for a shared lib, try ldc. I
have gotten
it to compile working shared libs in the past.
On 04/09/2012 01:24 AM, "Timo Westkämper"
<timo.westkam...@gmail.com>"
wrote:
On Sunday, 8 April 2012 at 17:59:28 UTC, Timo Westkämper
wrote:
Does someone know why the lib (.a) packaging instead of
objects (.o)
works better in this case?
Didn't work after all with -lib. I mixed up outputs.
Thanks, I might switch to ldc, if dmd and gdc fail here.
I found this tls.S script in the druntime sources
(src/rt/tls.S). Do you
think it could be included in the library to make tls
initialization work?
#if linux
/* The memory between the addresses of _tlsstart and _tlsend
is the storage
for
* thread-local data in D 2.0. Both of these rely on the
default linker
script
* of:
* .tdata : { *(.tdata .tdata.* .gnu.linkonce.td.*) }
* .tbss : { *(.tbss .tbss.* .gnu.linkonce.tb.*)
*(.tcommon) }
* to group the sections in that order.
*
* Sadly, this does not work because ld orders .tdata after
.tdata.*,
despite
* what the linker script says.
*/
.file "tls.S"
.globl _tlsstart
.section .tdata,"awT",@progbits
.align 4
.type _tlsstart, @object
.size _tlsstart, 4
_tlsstart:
.long 3
.globl _tlsend
.section .tcommon,"awT",@nobits
.align 4
.type _tlsend, @object
.size _tlsend, 4
_tlsend:
.zero 4
#endif
That assembly file does nothing for shared library support. I
have
been meaning to finish up a solution to help support shared
libs,
would mean more deviation from the dmd compiler's runtime
library, but
that's fine.
Ok. Good to know. Here is what I came up with for now.
I have not yet much knowledge of DMD internals so I just played
around with declarations:
import std.stdio;
// FIXME
__gshared extern(C) void* __data_start;
// FIXME tls marks
extern(C) int _tlsstart;
extern(C) int _tlsend;
// FIXME exception handling markers
extern(C) void _deh_beg() { }
extern(C) void _deh_end() { }
// hooks for init and term
extern (C) void rt_init();
extern (C) void rt_term();
extern (C) void hiD() {
rt_init();
writeln("hi from D lib");
rt_term();
}
//void main();
/*extern(C) {
void _init() {
rt_init();
}
void _fini() {
rt_term();
}
}*/
For some reasons, the _init and _fini parts don't yet work
properly.
And here the part of the Makefile that created the library:
dmd -c -g test.d -fPIC
ld -shared -o libtest.so test.o -lrt -lphobos2 -lpthread
This mostly reflects Jacob Carlborg's comment in the beginning of
what features are still missing
* Proper initialization of TLS data
* Setting up exception handling tables
* Setting up module info
