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Atmosphere/stratosphere/creport/source/creport_thread_info.cpp

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#include <switch.h>
#include "creport_thread_info.hpp"
bool ThreadInfo::ReadFromProcess(Handle debug_handle, u64 thread_id, bool is_64_bit) {
this->thread_id = thread_id;
/* Verify that the thread is running or waiting. */
{
u64 _;
u32 thread_state;
if (R_FAILED(svcGetDebugThreadParam(&_, &thread_state, debug_handle, this->thread_id, DebugThreadParam_State))) {
return false;
}
if (thread_state > 1) {
return false;
}
}
/* Get the thread context. */
if (R_FAILED(svcGetDebugThreadContext((u8 *)&this->context, debug_handle, this->thread_id, 0xF))) {
return false;
}
/* Don't try to parse stack frames if 32-bit. */
if (!is_64_bit) {
return true;
}
/* Try to locate stack top/bottom. */
TryGetStackInfo(debug_handle);
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u64 cur_fp = this->context.fp;
for (unsigned int i = 0; i < sizeof(this->stack_trace)/sizeof(u64); i++) {
/* Validate the current frame. */
if (cur_fp == 0 || (cur_fp & 0xF)) {
break;
}
/* Read a new frame. */
StackFrame cur_frame;
if (R_FAILED(svcReadDebugProcessMemory(&cur_frame, debug_handle, cur_fp, sizeof(StackFrame)))) {
break;
}
/* Advance to the next frame. */
this->stack_trace[this->stack_trace_size++] = cur_frame.lr;
cur_fp = cur_frame.fp;
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}
return true;
}
void ThreadInfo::TryGetStackInfo(Handle debug_handle) {
MemoryInfo mi;
u32 pi;
if (R_FAILED(svcQueryDebugProcessMemory(&mi, &pi, debug_handle, this->context.sp))) {
return;
}
/* Check if sp points into the stack. */
if (mi.type == MemType_MappedMemory) {
this->stack_bottom = mi.addr;
this->stack_top = mi.addr + mi.size;
return;
}
/* It's possible that sp is below the stack... */
if (R_FAILED(svcQueryDebugProcessMemory(&mi, &pi, debug_handle, mi.addr + mi.size))) {
return;
}
if (mi.type == MemType_MappedMemory) {
this->stack_bottom = mi.addr;
this->stack_top = mi.addr + mi.size;
}
}
void ThreadList::ReadThreadsFromProcess(Handle debug_handle, bool is_64_bit) {
u32 thread_count;
u64 thread_ids[max_thread_count];
if (R_FAILED(svcGetThreadList(&thread_count, thread_ids, max_thread_count, debug_handle))) {
this->thread_count = 0;
return;
}
if (thread_count > max_thread_count) {
thread_count = max_thread_count;
}
for (unsigned int i = 0; i < thread_count; i++) {
if (this->thread_infos[this->thread_count].ReadFromProcess(debug_handle, thread_ids[this->thread_count], is_64_bit)) {
this->thread_count++;
}
}
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}