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creport: Read exception info properly (except for crashed thread info)

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This commit is contained in:
Michael Scire 2018-06-25 02:18:26 -06:00
parent 4e7fcc1a50
commit 7cd44e8980
3 changed files with 62 additions and 19 deletions
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63
stratosphere/creport/source/creport_crash_report.cpp
View file

@ -43,23 +43,11 @@ void CrashReport::HandleAttachProcess(DebugEventInfo &d) {
this->process_info = d.info.attach_process;
if (kernelAbove500() && IsApplication()) {
/* Parse out user data. */
MemoryInfo mi;
u32 pi;
u64 address = this->process_info.user_exception_context_address;
u64 userdata_address = 0;
u64 userdata_size = 0;
if (R_FAILED(svcQueryDebugProcessMemory(&mi, &pi, this->debug_handle, address))) {
return;
}
/* Must be read or read-write */
if ((mi.perm | Perm_W) != Perm_Rw) {
return;
}
/* Must have space for both userdata address and userdata size. */
if (address < mi.addr || mi.addr + mi.size < address + 2 * sizeof(u64)) {
if (!IsAddressReadable(address, sizeof(userdata_address) + sizeof(userdata_size))) {
return;
}
@ -90,20 +78,65 @@ void CrashReport::HandleAttachProcess(DebugEventInfo &d) {
}
void CrashReport::HandleException(DebugEventInfo &d) {
this->exception_info = d.info.exception;
switch (d.info.exception.type) {
case DebugExceptionType::UndefinedInstruction:
this->result = (Result)CrashReportResult::UndefinedInstruction;
break;
case DebugExceptionType::InstructionAbort:
this->result = (Result)CrashReportResult::InstructionAbort;
this->exception_info.specific.raw = 0;
break;
case DebugExceptionType::DataAbort:
this->result = (Result)CrashReportResult::DataAbort;
break;
case DebugExceptionType::AlignmentFault:
this->result = (Result)CrashReportResult::AlignmentFault;
break;
case DebugExceptionType::UserBreak:
this->result = (Result)CrashReportResult::UserBreak;
/* Try to parse out the user break result. */
if (kernelAbove500() && IsAddressReadable(this->exception_info.specific.user_break.address, sizeof(this->result))) {
svcReadDebugProcessMemory(&this->result, this->debug_handle, this->exception_info.specific.user_break.address, sizeof(this->result));
}
break;
case DebugExceptionType::BadSvc:
this->result = (Result)CrashReportResult::BadSvc;
break;
case DebugExceptionType::UnknownNine:
/* TODO: Handle these exceptions...creport seems to discard all but the latest exception? */
this->result = (Result)CrashReportResult::UnknownNine;
this->exception_info.specific.raw = 0;
break;
case DebugExceptionType::DebuggerAttached:
case DebugExceptionType::BreakPoint:
case DebugExceptionType::DebuggerBreak:
default:
break;
return;
}
/* TODO: Parse crashing thread info. */
}
bool CrashReport::IsAddressReadable(u64 address, u64 size, MemoryInfo *o_mi) {
MemoryInfo mi;
u32 pi;
if (o_mi == NULL) {
o_mi = &mi;
}
if (R_FAILED(svcQueryDebugProcessMemory(o_mi, &pi, this->debug_handle, address))) {
return false;
}
/* Must be read or read-write */
if ((o_mi->perm | Perm_W) != Perm_Rw) {
return false;
}
/* Must have space for both userdata address and userdata size. */
if (address < o_mi->addr || o_mi->addr + o_mi->size < address + size) {
return false;
}
return true;
}

9
stratosphere/creport/source/creport_crash_report.hpp
View file

@ -29,13 +29,18 @@ class CrashReport {
u64 userdata_5x_address;
u64 userdata_5x_size;
/* Exception Info. */
ExceptionInfo exception_info;
public:
CrashReport() : debug_handle(INVALID_HANDLE), result((Result)CrashReportResult::IncompleteReport), process_info({0}) { }
CrashReport() : debug_handle(INVALID_HANDLE), result((Result)CrashReportResult::IncompleteReport), process_info({}), exception_info({}) { }
void BuildReport(u64 pid, bool has_extra_info);
void SaveReport();
void ProcessExceptions();
bool IsAddressReadable(u64 address, u64 size, MemoryInfo *mi = NULL);
Result GetResult() {
return this->result;
}
@ -68,7 +73,7 @@ class CrashReport {
}
bool IsUserBreak() {
return this->result == (Result)CrashReportResult::UserBreak;
return this->exception_info.type == DebugExceptionType::UserBreak;
}
private:
void HandleAttachProcess(DebugEventInfo &d);

9
stratosphere/creport/source/creport_debug_types.hpp
View file

@ -43,6 +43,12 @@ struct AlignmentFaultInfo {
u64 address;
};
struct UserBreakInfo {
u64 info_0;
u64 address;
u64 size;
};
struct BadSvcInfo {
u32 id;
};
@ -51,12 +57,11 @@ union SpecificExceptionInfo {
UndefinedInstructionInfo undefined_instruction;
DataAbortInfo data_abort;
AlignmentFaultInfo alignment_fault;
UserBreakInfo user_break;
BadSvcInfo bad_svc;
u64 raw;
};
static_assert(sizeof(SpecificExceptionInfo) == sizeof(u64), "Bad SpecificExceptionInfo definition!");
struct ExceptionInfo {
DebugExceptionType type;
u64 address;