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{
This file is part of the Free Pascal run time library.
(c) 2008 by Jonas Maebe
member of the Free Pascal development team.
See the file COPYING.FPC, included in this distribution,
for details about the copyright.
Signalhandler for Darwin/arm
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY;without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
}
procedure SignalToRunerror(Sig: cint; info : PSigInfo; SigContext:PSigContext); public name '_FPC_DEFAULTSIGHANDLER'; cdecl;
var
res : word;
begin
res:=0;
case sig of
SIGFPE :
begin
Case Info^.si_code Of
FPE_FLTDIV : Res:=208; { floating point divide by zero }
FPE_INTDIV : Res:=200; { integer divide by zero }
FPE_FLTOVF : Res:=205; { floating point overflow }
FPE_FLTUND : Res:=206; { floating point underflow }
FPE_FLTRES, { floating point inexact result }
FPE_FLTINV : Res:=207; { invalid floating point operation }
Else
Res:=207; {coprocessor error}
end;
end;
SIGBUS:
res:=214;
SIGILL,
SIGSEGV :
res:=216;
SIGINT:
res:=217;
SIGQUIT:
res:=233;
end;
{ right now, macOS generates SIGILL signals for fpu exceptions, so always clear the fpu exceptions }
SigContext^.uc_mcontext^.__fs.__fpsr:=SigContext^.uc_mcontext^.__fs.__fpsr and not(fpu_exception_mask shr fpu_exception_mask_to_status_mask_shift);
{$ifdef FPC_USE_SIGPROCMASK}
reenable_signal(sig);
{$endif }
{ return to trampoline }
if res <> 0 then
begin
SigContext^.uc_mcontext^.__ss.__r[0] := res;
SigContext^.uc_mcontext^.__ss.__r[1] := SigContext^.uc_mcontext^.__ss.__pc;
SigContext^.uc_mcontext^.__ss.__r[2] := SigContext^.uc_mcontext^.__ss.__fp;
pointer(SigContext^.uc_mcontext^.__ss.__pc) := @HandleErrorAddrFrame;
end;
end;
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