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

[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?


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
> [
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