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Fix handling of ctrl-c/ctrl-break on go32v2:

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* the default handler now silently quits if CtrlBreakHandler returns false or
   it hasn't been installed, instead of generating an unknown RTE 0.
Compiler: signal handlers are declared cdecl on go32v2 too.
This fixes bug #11494.

git-svn-id: trunk@11272 -
This commit is contained in:
giulio 2008-06-24 17:02:17 +00:00
parent aa23bebeb0
commit 5998ab33f2
2 changed files with 21 additions and 3 deletions
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2
compiler/catch.pas
View File

@ -65,7 +65,7 @@ uses
{$ifdef unix}
Procedure CatchSignal(Sig : Longint);cdecl;
{$else}
Function CatchSignal(Sig : longint):longint;
Function CatchSignal(Sig : longint):longint; cdecl;
{$endif}
begin
case Sig of

22
rtl/go32v2/dpmiexcp.pp
View File

@ -1544,6 +1544,23 @@ begin
{$endif CREATE_C_FUNCTIONS}
end.
{$else IN_SYSTEM}
{ Default handler for SIGINT. Default action is to quit silently.
However, if a CtrlBreakHandler has been installed, call it and continue if
it returned true.
If you want RTE 217 to be generated, use HandleException instead as the
SIGINT handler }
function SIGINT_Handler(x:longint):longint;cdecl;
var
iscbreak : boolean;
begin
iscbreak:=assigned(djgpp_exception_state_ptr) and
(djgpp_exception_state_ptr^.__signum=$1b);
if assigned(CtrlBreakHandler) and CtrlBreakHandler(iscbreak) then
exit(0); //no need to do cleanups, dpmi_longjmp will do it for us
halt;
end;
const
FPU_ControlWord : word = $1332;
function HandleException(sig : longint) : longint;cdecl;
@ -1608,8 +1625,9 @@ begin
17, {'Alignment Check',}
18, {'Machine Check',}
19, {'SSE FP error'}
SIGSEGV,SIGTRAP,SIGTIMR,SIGINT,SIGQUIT,SIGILL:
SIGSEGV,SIGTRAP,SIGTIMR,SIGQUIT,SIGILL:
ErrorOfSig:=216;
$1b, $79, SIGINT : ErrorOfSig:=217;
end;
if assigned(djgpp_exception_state_ptr) then
Begin
@ -1633,7 +1651,7 @@ begin
Signal(SIGNOFP,@HandleException);
Signal(SIGTRAP,@HandleException);
Signal(SIGTIMR,@HandleException);
Signal(SIGINT,@HandleException);
Signal(SIGINT,@SIGINT_Handler);
Signal(SIGQUIT,@HandleException);
Signal(SIGILL,@HandleException);
end;