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dmnt: use hardware single step extension if available

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Michael Scire 2021-07-27 05:34:51 -07:00 • committed by SciresM
parent 4075d24e0c
commit 05ea0c53d7
2 changed files with 28 additions and 17 deletions
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36
stratosphere/dmnt.gen2/source/dmnt2_debug_process.cpp
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@ -273,25 +273,31 @@ namespace ams::dmnt {
/* Note that we're stepping. */
m_stepping = true;
/* Determine where we're stepping to. */
u64 current_pc = ctx.pc;
u64 step_target = 0;
this->GetBranchTarget(ctx, thread_id, current_pc, step_target);
if (m_use_hardware_single_step) {
/* Set thread single step. */
R_TRY(this->SetThreadContext(std::addressof(ctx), thread_id, svc::ThreadContextFlag_SetSingleStep));
} else {
/* Determine where we're stepping to. */
u64 current_pc = ctx.pc;
u64 step_target = 0;
this->GetBranchTarget(ctx, thread_id, current_pc, step_target);
/* Ensure we end with valid breakpoints. */
auto bp_guard = SCOPE_GUARD { this->ClearStep(); };
/* Ensure we end with valid breakpoints. */
auto bp_guard = SCOPE_GUARD { this->ClearStep(); };
/* Set step breakpoint on current pc. */
/* TODO: aarch32 breakpoints. */
if (current_pc) {
R_TRY(m_step_breakpoints.SetBreakPoint(current_pc, sizeof(u32), true));
/* Set step breakpoint on current pc. */
/* TODO: aarch32 breakpoints. */
if (current_pc) {
R_TRY(m_step_breakpoints.SetBreakPoint(current_pc, sizeof(u32), true));
}
if (step_target) {
R_TRY(m_step_breakpoints.SetBreakPoint(step_target, sizeof(u32), true));
}
bp_guard.Cancel();
}
if (step_target) {
R_TRY(m_step_breakpoints.SetBreakPoint(step_target, sizeof(u32), true));
}
bp_guard.Cancel();
return ResultSuccess();
}