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98 lines
2.7 KiB
PHP
98 lines
2.7 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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{ $define SYSTEM_DEBUG}
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procedure SignalToRunerror(Sig: longint; SigInfo: PSigInfo; UContext: PUContext); public name '_FPC_DEFAULTSIGHANDLER'; cdecl;
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const
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fpu_ctx_magic = $46505501;
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lsx_ctx_magic = $53580001;
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lasx_ctx_magic = $41535801;
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used_fp = 1 shl 0;
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adrerr_rd = 1 shl 30;
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adrerr_wr = 1 shl 31;
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fcsr_bits_clear_exceptions = $e0ffffff;
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var
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PCtxInfo : PContext_Info;
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PFPU_Ctx : PFPU_Context;
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PLSX_Ctx : PLSX_Context;
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PLASX_Ctx : PLASX_Context;
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PX_Context : pointer;
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res : word;
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ferr: cUint;
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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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res:=207;
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if (used_fp and uContext^.uc_mcontext.flags)<>0 then
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begin
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ferr:=0;
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PCtxInfo:=PContext_Info(uContext+1);
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PX_Context:=PCtxInfo+1;
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case (PCtxInfo^.magic) of
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fpu_ctx_magic: begin
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PFPU_Ctx:=PX_Context;
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ferr:=PFPU_Ctx^.fcsr;
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PFPU_Ctx^.fcsr:=PFPU_Ctx^.fcsr and fcsr_bits_clear_exceptions;
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end;
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lsx_ctx_magic: begin
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PLSX_Ctx:=PX_Context;
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ferr:=PLSX_Ctx^.fcsr;
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PLSX_Ctx^.fcsr:=PLSX_Ctx^.fcsr and fcsr_bits_clear_exceptions;
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end;
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lasx_ctx_magic: begin
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PLASX_Ctx:=PX_Context;
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ferr:=PLASX_Ctx^.fcsr;
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PLASX_Ctx^.fcsr:=PLASX_Ctx^.fcsr and fcsr_bits_clear_exceptions;
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end;
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end;
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ferr:=ferr shr 24;
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case ferr of
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1: res:=207;
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2: res:=206;
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4: res:=205;
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8: res:=208;
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16: res:=207;
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else
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;
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end;
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end;
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end;
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SIGILL:
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res:=216;
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SIGSEGV :
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res:=216;
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SIGBUS:
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res:=214;
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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,
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pointer(uContext^.uc_mcontext.pc),
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pointer(uContext^.uc_mcontext.regs[22]));
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end;
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