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89 lines
2.8 KiB
PHP
89 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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procedure SignalToRunerror(sig : longint; SigInfo: PSigInfo; UContext: Pucontext);public name '_FPC_DEFAULTSIGHANDLER';cdecl;
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var
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res,fpustate : word;
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begin
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res:=0;
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case sig of
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SIGFPE :
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begin
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{ this is not allways necessary but I don't know yet
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how to tell if it is or not PM }
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res:=200;
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if assigned(ucontext^.uc_mcontext.fpstate) then
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begin
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FpuState:=ucontext^.uc_mcontext.fpstate^.sw;
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if (FpuState and FPU_ExceptionMask) <> 0 then
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begin
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{ first check the more precise options }
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if (FpuState and FPU_DivisionByZero)<>0 then
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res:=200
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else if (FpuState and (FPU_StackOverflow or FPU_StackUnderflow or FPU_Invalid))<>0 Then
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res:=207
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else if (FpuState and FPU_Overflow)<>0 then
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res:=205
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else if (FpuState and FPU_Underflow)<>0 then
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res:=206
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else if (FpuState and FPU_Denormal)<>0 then
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res:=216
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else
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res:=207; {'Coprocessor Error'}
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end;
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with ucontext^.uc_mcontext.fpstate^ do
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begin
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{ Reset Status word }
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sw:=sw and not FPU_ExceptionMask;
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{ Restoree default control word }
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cw:=Default8087CW;
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{ Reset Tag word to $ffff for all empty }
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tag:=$ffff;
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end;
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end;
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end;
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SIGBUS:
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res:=214;
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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(ucontext^.uc_mcontext.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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res:=216;
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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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begin
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ucontext^.uc_mcontext.eax := res;
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ucontext^.uc_mcontext.edx := ucontext^.uc_mcontext.eip;
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ucontext^.uc_mcontext.ecx := ucontext^.uc_mcontext.ebp;
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ucontext^.uc_mcontext.eip := ptruint(@HandleErrorAddrFrame);
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end;
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end;
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