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FpDebug (pure): Detect if a HW breakpoint has been triggered on Linux

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git-svn-id: trunk@46045 -
This commit is contained in:
joost 2014-08-16 21:40:08 +00:00
parent 45dcb0b2e9
commit 8fd0269bae
1 changed files with 18 additions and 0 deletions
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18
components/fpdebug/fpdbglinuxclasses.pas
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@ -231,6 +231,7 @@ type
function ResetInstructionPointerAfterBreakpoint: boolean; override;
function AddWatchpoint(AnAddr: TDBGPtr): integer; override;
function RemoveWatchpoint(AnId: integer): boolean; override;
function DetectHardwareWatchpoint: integer; override;
procedure BeforeContinue; override;
procedure LoadRegisterValues; override;
end;
@ -433,10 +434,27 @@ begin
end;
end;
function TDbgLinuxThread.DetectHardwareWatchpoint: integer;
var
dr6: PtrUInt;
begin
result := -1;
if ReadDebugReg(6, dr6) then
begin
if dr6 and 1 = 1 then result := 0
else if dr6 and 2 = 2 then result := 1
else if dr6 and 4 = 4 then result := 2
else if dr6 and 8 = 8 then result := 3;
end;
end;
procedure TDbgLinuxThread.BeforeContinue;
var
io: iovec;
begin
if Process.CurrentWatchpoint>-1 then
WriteDebugReg(6, 0);
if FUserRegsChanged then
begin
io.iov_base:=@(FUserRegs.regs64[0]);