[fpc-devel] ppcrossarm dies when trying to build embedded rtl (svn 23683)

[Florian Klämpfl]

Am 03.03.2013 21:27, schrieb Michael Ring:
> I have created a new patch, this time it uses the values of the two
> commandline parameters -Ch and -Cs to set the size of Stack and Heap. I
> am not sure if those params were for this use case but in my opinion it
> makes sense.
> 
> Florian, could I ask you to apply the patch to trunk if what I am doing
> is is ok?

It looks reasonable, but after some thinking I came to the conclusion
that maybe the heap should be already allocated during linking, i.e. so
heapmgr does not need to calculate an _heap_start.

> 
> 
> Index: rtl/embedded/heapmgr.pp
> ===================================================================
> --- rtl/embedded/heapmgr.pp    (revision 23681)
> +++ rtl/embedded/heapmgr.pp    (working copy)
> @@ -34,7 +34,13 @@
> 
>      var
>        Blocks: PHeapBlock = nil;
> +      _heap_start : pointer;
> +      _heapsize: longWord; external name '__heapsize';
> +      _stklen: longword; external name '__stklen';
> +      _bss_end: record end; external name '_bss_end';
> +      _stack_top: record end; external name '_stack_top';
> 
> +
>      procedure InternalFreeMem(Addr: Pointer; Size: ptruint); forward;
> 
>      function FindSize(p: pointer): ptruint;
> @@ -242,6 +248,11 @@
> 
>  initialization
>    SetMemoryManager(MyMemoryManager);
> +  _heap_start := @_stack_top - _heapsize - _stklen;
> +  // Only initialize Heap when there is enough space available
> +  if _heap_start >= @_bss_end then
> +    RegisterHeapBlock(_heap_start,_heapsize);
> +
>  finalization
>    //FinalizeHeap;
>  end.
> 
> 
> 
> 
> 
> Am 03.03.13 20:09, schrieb Michael Ring:
>> I am running on a mac, building svn 23683
>>
>> svn 23681 (one before implementation of armv6m) compiles fine.
>>
>> commandline for building was:
>>
>> make clean buildbase CROSSINSTALL=1 OS_TARGET=embedded CPU_TARGET=arm
>> SUBARCH=armv7m CROSSOPT="-gw2 -O-" BINUTILSPREFIX=arm-none-eabi-
>>
>>
>> make -C rtl all
>> make -C embedded all
>> /bin/mkdir -p /Users/ring/devel/fpc/rtl/units/arm-embedded
>> /Users/ring/devel/fpc/compiler/ppcrossarm -Cparmv7m @rtl.cfg -Ur
>> -Tembedded -Parm -XParm-none-eabi- -Xr -Ur -Xs -O2 -n -Fi../inc
>> -Fi../arm -FE. -FU/Users/ring/devel/fpc/rtl/units/arm-embedded -darm
>> -dRELEASE -gw2 -O- -Us -Sg system.pp
>> Fatal: Compilation aborted
>> An unhandled exception occurred at $00000000:
>> EAccessViolation: Access violation
>>   $00000000
>>   $00142333
>>   $00144647
>>   $00144B00
>>   $001AF725
>>   $001970A5
>>   $0003295E
>>
>> make[3]: *** [system.ppu] Error 217
>> make[2]: *** [embedded_all] Error 2
>> make[1]: *** [rtl_all] Error 2
>> make: *** [base.build-stamp.arm-embedded] Error 2
>> [
>> _______________________________________________
>> fpc-devel maillist  -  fpc-devel at lists.freepascal.org
>> http://lists.freepascal.org/mailman/listinfo/fpc-devel
>>
> 
> _______________________________________________
> fpc-devel maillist  -  fpc-devel at lists.freepascal.org
> http://lists.freepascal.org/mailman/listinfo/fpc-devel
>