What is the state of Microcontroller support in d?

[Dan Walmsley via Digitalmars-d]

On Tuesday, 20 June 2017 at 10:41:10 UTC, Mike wrote:
> On Tuesday, 20 June 2017 at 10:39:47 UTC, Mike wrote:
>
>> I had to use code from my minimal runtime experiment here
>
> Sorry, I forgot to add the link for my minimal runtime 
> experiment:  
> https://github.com/JinShil/minimal_druntime_experiment
>
> Mike

Mike,

I think good news:

I built a slightly different example, because I don't have access 
to the linker you have, I just had the arm-none-eabi one and I 
used ldc 1.3.0-beta2.

I compiled using these flags:
-march=thumb -mcpu=cortex-m4 -mtriple=thumb-none-linux-eabi  -g 
-defaultlib= -conf= -oftest -better

and I got 0 rodata no rtti (I did do -gc-sections) if I don't 
gc-sections it complains about loads of missing runtime stuff.

I tried then to instantiate a class, but it just crashes in 
hardfault:

final abstract class TestClass1 { }
final abstract class TestClass2 { }
final abstract class TestClass3 { }
final abstract class TestClass4 { }
final abstract class TestClass5 { }
final abstract class TestClass6 { }
final abstract class TestClass7 { }
final abstract class TestClass8 { }
final abstract class TestClass9 { }

extern (C) void _d_callfinalizer (void *p)
{
}

class Point
{
     this (int x, int y)
     {
         X = x;
         Y = y;
     }

     int X;
     int Y;
}

void Main()
{
     scope p = new Point(2,2);

     p.X = 1;
     p.Y = 1;

     int x = 0;

     x++;
}

Perhaps D needs to be aware of my stack? I will take a look at 
your linker script. But at least there is 0 type info data after 
-gc-sections has run.