[fpc-devel] co-processor offset out of range issue in Debian armhf.

[peter green]

mricron is failing to build for Debian armhf, specifically we are getting a bunch of "co-processor offset out of range" errors.

> (9009) Assembling parconvert
> parconvert.s: Assembler messages:
> parconvert.s:3775: Error: co-processor offset out of range
> parconvert.s:3783: Error: co-processor offset out of range
> parconvert.s:3880: Error: co-processor offset out of range
> parconvert.s:3886: Error: co-processor offset out of range
> parconvert.s:3892: Error: co-processor offset out of range
> parconvert.s:3895: Error: co-processor offset out of range
> parconvert.s:3899: Error: co-processor offset out of range
> parconvert.s:3903: Error: co-processor offset out of range
> parconvert.s:3918: Error: co-processor offset out of range
> parconvert.s:3924: Error: co-processor offset out of range
> parconvert.s:3930: Error: co-processor offset out of range
> parconvert.s:4813: Error: co-processor offset out of range
> parconvert.s:4817: Error: co-processor offset out of range
> parconvert.s:4821: Error: co-processor offset out of range
> parconvert.s:4825: Error: co-processor offset out of range
> parconvert.s:4895: Error: co-processor offset out of range
> parconvert.s:4899: Error: co-processor offset out of range
> parconvert.pas(1375) Error: (9007) Error while assembling exitcode 1
> parconvert.pas(1375) Fatal: (10026) There were 2 errors compiling
> module, stopping
> Fatal: (1018) Compilation aborted
>
> The first error corresponds to the vstr instruction on line 3775 below:
>
> # [593] lScanResX :=  round(readParFloat);
>      mov    r0,r11
>      blx    PARCONVERT$_$READ_PAR2NII$crcDDE5A164_$$_READPARFLOAT$$DOUBLE
>      blx    fpc_round_real
>      blx    fpc_int64_to_double
>      vmov.f64    d1,d0
>      sub    r0,r11,#143360
>      vstr    d1,[r0, #-2528]
>
> Which in turn, corresponds to line 593 of parconvert.pas:
>
>        if lUpCaseStr = 'SCANRESOLUTION(XY)' then begin
>           lScanResX :=  round(readParFloat);
>           lScanResY :=  round(readParFloat);
More detail at https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=851834

Any thoughts on what might cause this or possible fixes? my guess is that the compiler is missing an offset range check for access to local variables.

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