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HackStudio: Implement "Step Over" debugging action

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The "Step Over" action continues execution without stepping into
instructions in subsequent function calls.
This commit is contained in:
Itamar 2020-08-21 16:48:42 +03:00 • committed by Andreas Kling
parent 99788e6b32
commit 5c494eefd6
7 changed files with 75 additions and 13 deletions
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9
Libraries/LibDebug/DebugSession.h
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@ -207,10 +207,17 @@ void DebugSession::run(Callback callback)
// Re-enable the breakpoint if it wasn't removed by the user
if (current_breakpoint.has_value() && m_breakpoints.contains(current_breakpoint.value().address)) {
// The current breakpoint was removed in order to make it transparrent to the user.
// The current breakpoint was removed to make it transparrent to the user.
// We now want to re-enable it - the code execution flow could hit it again.
// To re-enable the breakpoint, we first perform a single step and execute the
// instruction of the breakpoint, and then redo the INT3 patch in its first byte.
// If the user manually inserted a breakpoint at were we breaked at originally,
// we need to disable that breakpoint because we want to singlestep over it to execute the
// instruction we breaked on (we re-enable it again later anyways).
if (m_breakpoints.contains(current_breakpoint.value().address) && m_breakpoints.get(current_breakpoint.value().address).value().state == BreakPointState::Enabled) {
disable_breakpoint(current_breakpoint.value().address);
}
auto stopped_address = single_step();
enable_breakpoint(current_breakpoint.value().address);
did_single_step = true;