One of the binutils devs suggested this, to move D demangling into libiberty, that way binutils programs (and any other program that uses libiberty in a similar manner) will gain D support.

For binutils, this would include D demangling support for (via the -C or --demangle= switch).

- nm
- addr2line
- objdump
- ld

https://github.com/ibuclaw/gdb/commit/0ba7ac2f91f45b24bcfba2d1ecedb10580fac152

I have named the specified demangle style as 'dlang', if no one has objects, I'll go ahead and write it up.

Regards
Iain.

On Fri, Jan 10, 2014 at 05:51:17PM +0000, Iain Buclaw wrote:
> One of the binutils devs suggested this, to move D demangling into libiberty, that way binutils programs (and any other program that uses libiberty in a similar manner) will gain D support.
[...]

Yes! Please do!! This will go a long way in helping D get stronger tool support, at least on GNU platforms.


T

-- 
Freedom: (n.) Man's self-given right to be enslaved by his own depravity.

On 10 January 2014 20:05, H. S. Teoh <hsteoh@quickfur.ath.cx> wrote:
> On Fri, Jan 10, 2014 at 05:51:17PM +0000, Iain Buclaw wrote:
>> One of the binutils devs suggested this, to move D demangling into libiberty, that way binutils programs (and any other program that uses libiberty in a similar manner) will gain D support.
> [...]
>
> Yes! Please do!! This will go a long way in helping D get stronger tool support, at least on GNU platforms.
>


This is a start.  Unfortunately through testing, it becomes more apparently that the ability to demangle templates is absolute key here to the success of this.

Without demangling:
$ ./ld/ld-new test.o 2>&1 | grep -v "__T"

./ld/ld-new: warning: cannot find entry symbol _start; defaulting to
0000000000400120
test.o: In function `main':
/opt/usr/include/d/4.9.0/__entrypoint.di:59: undefined reference to
`_d_run_main'
test.o: In function `_Dmain':
/home/iain/src/gdc/gdb/objdir/test.d:5: undefined reference to
`_D3std4math3tanFNaNbNeeZe'
test.o: In function `test._D4test9__modinitFZv':
/home/iain/src/gdc/gdb/objdir/test.d:5: undefined reference to `_Dmodule_ref'
/home/iain/src/gdc/gdb/objdir/test.d:5: undefined reference to `_Dmodule_ref'
test.o:(.data+0x10): undefined reference to `_D3std4math12__ModuleInfoZ'


With demangling:
$ ./ld/ld-new test.o --demangle=dlang 2>&1 | grep -v "__T"

./ld/ld-new: warning: cannot find entry symbol _start; defaulting to
0000000000400120
test.o: In function `main':
/opt/usr/include/d/4.9.0/__entrypoint.di:59: undefined reference to
`_d_run_main'
test.o: In function `D main':
/home/iain/src/gdc/gdb/objdir/test.d:5: undefined reference to
`std.math.tan(real)'
test.o: In function `test._D4test9__modinitFZv':
/home/iain/src/gdc/gdb/objdir/test.d:5: undefined reference to `_Dmodule_ref'
/home/iain/src/gdc/gdb/objdir/test.d:5: undefined reference to `_Dmodule_ref'
test.o:(.data+0x10): undefined reference to `std.math.moduleinfo$'


Anyway, here's the guts of the change.

https://github.com/ibuclaw/gdb/commit/45c505dbc0eecb9fa7842dcbdf46894e450c9cbc


Regards
Iain.

On 10 January 2014 20:05, H. S. Teoh <hsteoh@quickfur.ath.cx> wrote:
> On Fri, Jan 10, 2014 at 05:51:17PM +0000, Iain Buclaw wrote:
>> One of the binutils devs suggested this, to move D demangling into libiberty, that way binutils programs (and any other program that uses libiberty in a similar manner) will gain D support.
> [...]
>
> Yes! Please do!! This will go a long way in helping D get stronger tool support, at least on GNU platforms.
>
>

Initial patches have been committed !

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=log;h=50367cd2ada722ddf5bede594d8ed7631fcde5ab

On 1/18/14 10:34 AM, Iain Buclaw wrote:
> On 10 January 2014 20:05, H. S. Teoh <hsteoh@quickfur.ath.cx> wrote:
>> On Fri, Jan 10, 2014 at 05:51:17PM +0000, Iain Buclaw wrote:
>>> One of the binutils devs suggested this, to move D demangling into
>>> libiberty, that way binutils programs (and any other program that
>>> uses libiberty in a similar manner) will gain D support.
>> [...]
>>
>> Yes! Please do!! This will go a long way in helping D get stronger tool
>> support, at least on GNU platforms.
>>
>>
>
> Initial patches have been committed !
>
> https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=log;h=50367cd2ada722ddf5bede594d8ed7631fcde5ab

This is terrific. Congratulations!

Andrei