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dmnt: reload modules on NRO load/unload

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This commit is contained in:
Michael Scire 2021-07-22 06:01:07 -07:00
parent 32818a7a99
commit 252b890a12
3 changed files with 41 additions and 2 deletions
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3
stratosphere/dmnt.gen2/source/dmnt2_debug_process.cpp
View file

@ -155,6 +155,9 @@ namespace ams::dmnt {
}
Result DebugProcess::CollectModules() {
/* Reset our module count. */
m_module_count = 0;
/* Traverse the address space, looking for modules. */
uintptr_t address = 0;

4
stratosphere/dmnt.gen2/source/dmnt2_debug_process.hpp
View file

@ -137,13 +137,13 @@ namespace ams::dmnt {
Result GetProcessDebugEvent(svc::DebugEventInfo *out);
void GetBranchTarget(svc::ThreadContext &ctx, u64 thread_id, u64 &current_pc, u64 &target);
Result CollectModules();
private:
Result Start();
s32 ThreadCreate(u64 thread_id);
void ThreadExit(u64 thread_id);
Result CollectModules();
};
}

36
stratosphere/dmnt.gen2/source/dmnt2_gdb_server_impl.cpp
View file

@ -638,6 +638,42 @@ namespace ams::dmnt {
reply = true;
}
break;
case svc::DebugException_UserBreak:
{
const uintptr_t address = d.info.exception.address;
const auto &info = d.info.exception.specific.user_break;
AMS_DMNT2_GDB_LOG_DEBUG("UserBreak %lx, addr=%lx, reason=%x, data=0x%lx, size=0x%lx\n", thread_id, address, info.break_reason, info.address, info.size);
/* Check reason. */
/* TODO: libnx/Nintendo provide addresses in different ways, but we could optimize to avoid iterating all memory repeatedly. */
if ((info.break_reason & svc::BreakReason_NotificationOnlyFlag) != 0) {
const auto reason = info.break_reason & ~svc::BreakReason_NotificationOnlyFlag;
if (reason == svc::BreakReason_PostLoadDll || reason == svc::BreakReason_PostUnloadDll) {
/* Re-collect the process's modules. */
m_debug_process.CollectModules();
}
}
/* Check if we should automatically continue. */
svc::ThreadContext ctx;
if (R_SUCCEEDED(m_debug_process.GetThreadContext(std::addressof(ctx), thread_id, svc::ThreadContextFlag_Control))) {
u32 insn = 0;
if (R_SUCCEEDED(m_debug_process.ReadMemory(std::addressof(insn), ctx.pc, sizeof(insn)))) {
constexpr u32 Aarch64SvcBreakValue = 0xD4000001 | (svc::SvcId_Break << 5);
constexpr u32 Aarch32SvcBreakValue = 0xEF000000 | (svc::SvcId_Break);
bool is_svc_break = m_debug_process.Is64Bit() ? (insn == Aarch64SvcBreakValue) : (insn == Aarch32SvcBreakValue);
if (!is_svc_break) {
AMS_DMNT2_GDB_LOG_ERROR("UserBreak from non-SvcBreak (%08x)\n", insn);
m_debug_process.Continue();
continue;
}
}
}
signal = GdbSignal_BreakpointTrap;
}
break;
case svc::DebugException_DebuggerBreak:
{
AMS_DMNT2_GDB_LOG_DEBUG("DebuggerBreak %lx, last=%lx\n", thread_id, m_debug_process.GetLastThreadId());