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111 lines
2.8 KiB
PHP
111 lines
2.8 KiB
PHP
{
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This file is part of the Free Pascal run time library.
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(c) 2000-2003 by Marco van de Voort
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member of the Free Pascal development team.
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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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Signalhandler for FreeBSD/i386
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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 FPU_ALL=$7F;
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{$ifdef cpui386}
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function getfpustate(sininfo:psiginfo):longint; {inline;}
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begin
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if ptruint(sininfo)> high(word) then
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getfpustate:=sininfo^.si_code
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else
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getfpustate:=word(ptruint(sininfo));
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end;
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function getaltfpustate(sigcontext:psigcontextrec):longint; {inline;}
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begin
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if assigned(sigcontext) then
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begin
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if mmx_support then
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getaltfpustate:=sigcontext^.sc_fpustate^.xmmState.fx_fsw
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else
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getaltfpustate:=sigcontext^.sc_fpustate^.x87state.en_sw
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end
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else
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getaltfpustate:=0;
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end;
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{$endif}
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procedure SignalToRunerror(Sig: longint;sininfo:psiginfo; SigContext: PSigContextRec); public name '_FPC_DEFAULTSIGHANDLER'; cdecl;
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var
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res,fpustate : word;
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oldact: SigActionRec;
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begin
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res:=0;
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{$ifdef BSD}
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{$ifdef cpui386}
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fpustate:=0;
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asm
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fnstsw fpustate
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end;
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{$endif cpui386}
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{$endif BSD}
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case sig of
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SIGFPE :
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begin
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{ this is not allways necessary but I don't know yet
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how to tell if it is or not PM }
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res:=200;
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{$ifdef cpui386}
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fpustate:=GetaltFPUState(sigcontext);
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{$else}
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fpustate:=0;
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{$endif}
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if (FpuState and FPU_All) <> 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_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 if (FpuState and (FPU_StackOverflow or FPU_StackUnderflow))<>0 then
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res:=207
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else if (FpuState and FPU_Invalid)<>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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SysResetFPU;
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end;
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SIGILL,
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SIGBUS,
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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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{$ifdef DEBUG_SIGNAL_HANDLER}
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InstallDefaultSignalHandler(sig,oldact);
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InstallDefaultSignalHandler(sig,oldact);
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{$endif}
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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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{$ifdef cpui386}
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HandleErrorAddrFrame(res,pointer(SigContext^.sc_eip),pointer(SigContext^.sc_ebp));
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{$endif}
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end;
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end;
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