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* fixed resetting of state, broken in r45995

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+ debugging output
  * check magic properly
  * cosmetics

git-svn-id: trunk@46208 -
This commit is contained in:
florian 2020-08-03 19:42:13 +00:00
parent 893225770c
commit 4c2c540b29
1 changed files with 23 additions and 10 deletions
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33
rtl/linux/i386/sighnd.inc
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@ -34,6 +34,15 @@ begin
{ this is not allways necessary but I don't know yet { this is not allways necessary but I don't know yet
how to tell if it is or not PM } how to tell if it is or not PM }
res:=200; res:=200;
{$ifdef SYSTEM_DEBUG}
if assigned(ucontext^.uc_mcontext.fpstate) then
begin
writeln('magic: $',hexstr(ucontext^.uc_mcontext.fpstate^.magic,4));
writeln('magic1: $',hexstr(ucontext^.uc_mcontext.fpstate^.sw_reserved.magic1,8));
end
else
writeln('fpstate=nil');
{$endif SYSTEM_DEBUG}
if SigInfo^.si_code<>FPE_INTDIV then if SigInfo^.si_code<>FPE_INTDIV then
begin begin
if assigned(ucontext^.uc_mcontext.fpstate) then if assigned(ucontext^.uc_mcontext.fpstate) then
@ -56,7 +65,7 @@ begin
res:=207; {'Coprocessor Error'} res:=207; {'Coprocessor Error'}
end; end;
{ SSE data? } { SSE data? }
if ucontext^.uc_mcontext.fpstate^.magic<>$ffff then if ucontext^.uc_mcontext.fpstate^.magic=0 then
begin begin
MMState:=ucontext^.uc_mcontext.fpstate^.mxcsr; MMState:=ucontext^.uc_mcontext.fpstate^.mxcsr;
if (MMState and MM_ExceptionMask)<>0 then if (MMState and MM_ExceptionMask)<>0 then
@ -83,8 +92,11 @@ begin
begin begin
{ Reset Status word } { Reset Status word }
sw:=sw and not(FPU_ExceptionMask); sw:=sw and not(FPU_ExceptionMask);
mxcsr:=mxcsr and not(MM_ExceptionMask); if magic=0 then
SysResetFPU; mxcsr:=mxcsr and not(MM_ExceptionMask);
cw:=Default8087CW;
{ Reset Tag word to $ffff for all empty }
tag:=$ffff;
end; end;
end; end;
SIGBUS: SIGBUS:
@ -106,13 +118,14 @@ begin
res:=233; res:=233;
end; end;
reenable_signal(sig); reenable_signal(sig);
{ give runtime error at the position where the signal was raised }
{ give runtime error at the position where the signal was raised }
if res<>0 then if res<>0 then
begin begin
ucontext^.uc_mcontext.eax := res; ucontext^.uc_mcontext.eax := res;
ucontext^.uc_mcontext.edx := ucontext^.uc_mcontext.eip; ucontext^.uc_mcontext.edx := ucontext^.uc_mcontext.eip;
ucontext^.uc_mcontext.ecx := ucontext^.uc_mcontext.ebp; ucontext^.uc_mcontext.ecx := ucontext^.uc_mcontext.ebp;
ucontext^.uc_mcontext.eip := ptruint(@SignalToHandleErrorAddrFrame); ucontext^.uc_mcontext.eip := ptruint(@SignalToHandleErrorAddrFrame);
end; end;
end; end;