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https://gitlab.com/freepascal.org/fpc/source.git
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112 lines
2.8 KiB
PHP
112 lines
2.8 KiB
PHP
{
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This file is part of the Free Pascal run time library.
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Copyright (c) 1999-2000 by Michael Van Canneyt,
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member of the Free Pascal development team.
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Signal handler is arch dependant due to processor to language
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exception conversion.
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See the file COPYING.FPC, included in this distribution,
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for details about the copyright.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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**********************************************************************}
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const
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FPE_INTDIV = 1;
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FPE_INTOVF = 2;
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FPE_FLTDIV = 3;
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FPE_FLTOVF = 4;
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FPE_FLTUND = 5;
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FPE_FLTRES = 6;
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FPE_FLTINV = 7;
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FPE_FLTSUB = 8;
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procedure SignalToRunerror(sig : longint; SigInfo: PSigInfo; SigContext: PSigContext);public name '_FPC_DEFAULTSIGHANDLER';cdecl;
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var
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res : word;
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addr : pointer;
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frame : pointer;
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begin
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res:=0;
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if assigned(sigcontext) then
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begin
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addr := pointer(sigcontext^.uc_mcontext.gregs[REG_PC]);
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frame := pointer(sigcontext^.uc_mcontext.gregs[REG_FP])
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end
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else
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begin
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addr := nil;
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frame := nil;
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end;
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case sig of
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SIGFPE :
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begin
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case siginfo^.si_code of
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FPE_INTDIV:
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res:=200;
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FPE_INTOVF:
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res:=205;
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FPE_FLTDIV:
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res:=208;
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FPE_FLTOVF:
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res:=205;
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FPE_FLTUND:
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res:=206;
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else
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res:=207;
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end;
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with sigcontext^.uc_mcontext.fpregs.fpchip_state do
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begin
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status:=status and not FPU_ExceptionMask;
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{ Control word is index 0 }
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state[0]:=Default8087CW;
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{ Status word is also index 1 }
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state[1]:=status;
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{ Tag word is index 2 }
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state[2]:=$ffff;
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end;
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end;
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SIGILL:
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if sse_check then
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begin
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os_supports_sse:=false;
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res:=0;
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inc(sigcontext^.uc_mcontext.gregs[REG_EIP],3);
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end
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else
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res:=216;
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SIGSEGV :
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begin
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res:=216;
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end;
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SIGBUS :
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begin
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res:=214;
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end;
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SIGINT:
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res:=217;
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SIGQUIT:
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res:=233;
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end;
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reenable_signal(sig);
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{ give runtime error at the position where the signal was raised }
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{if res<>0 then
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HandleErrorAddrFrame(res,addr,frame);}
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{ give runtime error at the position where the signal was raised }
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if res<>0 then
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begin
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sigcontext^.uc_mcontext.gregs[REG_EAX] := res;
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sigcontext^.uc_mcontext.gregs[REG_EDX] := sigcontext^.uc_mcontext.gregs[REG_EIP];
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sigcontext^.uc_mcontext.gregs[REG_ECX] := sigcontext^.uc_mcontext.gregs[REG_EBP];
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sigcontext^.uc_mcontext.gregs[REG_EIP] := ptruint(@HandleErrorAddrFrame);
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end;
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end;
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