mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2025-10-31 19:25:46 +01:00
229 lines
8.3 KiB
C++
229 lines
8.3 KiB
C++
/*
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* Copyright (c) 2018 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <switch.h>
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#include <cstring>
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#include "creport_code_info.hpp"
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#include "creport_crash_report.hpp"
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void CodeList::SaveToFile(FILE *f_report) {
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fprintf(f_report, " Number of Code Regions: %u\n", this->code_count);
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for (unsigned int i = 0; i < this->code_count; i++) {
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fprintf(f_report, " Code Region %02u:\n", i);
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fprintf(f_report, " Address: %016lx-%016lx\n", this->code_infos[i].start_address, this->code_infos[i].end_address);
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if (this->code_infos[i].name[0]) {
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fprintf(f_report, " Name: %s\n", this->code_infos[i].name);
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}
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CrashReport::Memdump(f_report, " Build Id: ", this->code_infos[i].build_id, sizeof(this->code_infos[i].build_id));
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}
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}
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void CodeList::ReadCodeRegionsFromThreadInfo(Handle debug_handle, const ThreadInfo *thread) {
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u64 code_base;
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/* Try to add the thread's PC. */
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if (TryFindCodeRegion(debug_handle, thread->GetPC(), &code_base)) {
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AddCodeRegion(debug_handle, code_base);
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}
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/* Try to add the thread's LR. */
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if (TryFindCodeRegion(debug_handle, thread->GetLR(), &code_base)) {
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AddCodeRegion(debug_handle, code_base);
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}
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/* Try to add all the addresses in the thread's stacktrace. */
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for (u32 i = 0; i < thread->GetStackTraceSize(); i++) {
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if (TryFindCodeRegion(debug_handle, thread->GetStackTrace(i), &code_base)) {
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AddCodeRegion(debug_handle, code_base);
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}
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}
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}
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void CodeList::AddCodeRegion(u64 debug_handle, u64 code_address) {
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/* Check whether we already have this code region. */
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for (size_t i = 0; i < this->code_count; i++) {
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if (this->code_infos[i].start_address <= code_address && code_address < this->code_infos[i].end_address) {
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return;
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}
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}
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/* Add all contiguous code regions. */
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u64 cur_ptr = code_address;
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while (this->code_count < max_code_count) {
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MemoryInfo mi;
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u32 pi;
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if (R_FAILED(svcQueryDebugProcessMemory(&mi, &pi, debug_handle, cur_ptr))) {
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break;
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}
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if (mi.perm == Perm_Rx) {
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/* Parse CodeInfo. */
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this->code_infos[this->code_count].start_address = mi.addr;
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this->code_infos[this->code_count].end_address = mi.addr + mi.size;
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GetCodeInfoName(debug_handle, mi.addr, mi.addr + mi.size, this->code_infos[this->code_count].name);
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GetCodeInfoBuildId(debug_handle, mi.addr + mi.size, this->code_infos[this->code_count].build_id);
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if (this->code_infos[this->code_count].name[0] == '\x00') {
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snprintf(this->code_infos[this->code_count].name, 0x1F, "[%02x%02x%02x%02x]", this->code_infos[this->code_count].build_id[0],
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this->code_infos[this->code_count].build_id[1],
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this->code_infos[this->code_count].build_id[2],
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this->code_infos[this->code_count].build_id[3]);
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}
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this->code_count++;
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}
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/* If we're out of readable memory, we're done reading code. */
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if (mi.type == MemType_Unmapped || mi.type == MemType_Reserved) {
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break;
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}
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/* Verify we're not getting stuck in an infinite loop. */
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if (mi.size == 0 || U64_MAX - mi.size <= cur_ptr) {
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break;
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}
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cur_ptr += mi.size;
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}
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}
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bool CodeList::TryFindCodeRegion(Handle debug_handle, u64 guess, u64 *address) {
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MemoryInfo mi;
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u32 pi;
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if (R_FAILED(svcQueryDebugProcessMemory(&mi, &pi, debug_handle, guess))) {
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return false;
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}
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if (mi.perm == Perm_Rw) {
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guess = mi.addr - 4;
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if (R_FAILED(svcQueryDebugProcessMemory(&mi, &pi, debug_handle, guess))) {
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return false;
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}
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}
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if (mi.perm == Perm_R) {
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guess = mi.addr - 4;
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if (R_FAILED(svcQueryDebugProcessMemory(&mi, &pi, debug_handle, guess))) {
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return false;
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}
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}
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if (mi.perm != Perm_Rx) {
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return false;
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}
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/* Iterate backwards until we find the memory before the code region. */
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while (mi.addr > 0) {
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if (R_FAILED(svcQueryDebugProcessMemory(&mi, &pi, debug_handle, guess))) {
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return false;
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}
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if (mi.type == MemType_Unmapped) {
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/* Code region will be at the end of the unmapped region preceding it. */
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*address = mi.addr + mi.size;
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return true;
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}
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guess -= 4;
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}
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return false;
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}
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void CodeList::GetCodeInfoName(u64 debug_handle, u64 rx_address, u64 rodata_addr, char *name) {
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char name_in_proc[0x200];
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/* Clear name. */
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memset(name, 0, 0x20);
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/* Check whether this NSO *has* a name... */
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{
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u64 rodata_start[0x20/sizeof(u64)];
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MemoryInfo mi;
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u32 pi;
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u64 rw_address;
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/* Verify .rodata is read-only. */
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if (R_FAILED(svcQueryDebugProcessMemory(&mi, &pi, debug_handle, rodata_addr)) || mi.perm != Perm_R) {
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return;
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}
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/* rwdata is after rodata. */
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rw_address = mi.addr + mi.size;
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/* Read start of .rodata. */
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if (R_FAILED(svcReadDebugProcessMemory(rodata_start, debug_handle, rodata_addr, sizeof(rodata_start)))) {
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return;
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}
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/* Check if name section is present. */
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if (rodata_start[0] == (rw_address - rx_address)) {
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return;
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}
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}
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/* Read name out of .rodata. */
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if (R_FAILED(svcReadDebugProcessMemory(name_in_proc, debug_handle, rodata_addr + 8, sizeof(name_in_proc)))) {
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return;
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}
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/* Start after last slash in path. */
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int ofs = strnlen(name_in_proc, sizeof(name_in_proc));
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while (ofs >= 0 && name_in_proc[ofs] != '/' && name_in_proc[ofs] != '\\') {
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ofs--;
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}
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strncpy(name, name_in_proc + ofs + 1, 0x20);
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name[0x1F] = '\x00';
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}
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void CodeList::GetCodeInfoBuildId(u64 debug_handle, u64 rodata_addr, u8 *build_id) {
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MemoryInfo mi;
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u32 pi;
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/* Clear build id. */
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memset(build_id, 0, 0x20);
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/* Verify .rodata is read-only. */
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if (R_FAILED(svcQueryDebugProcessMemory(&mi, &pi, debug_handle, rodata_addr)) || mi.perm != Perm_R) {
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return;
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}
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/* We want to read the last two pages of .rodata. */
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u8 last_pages[0x2000];
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size_t last_pages_size = mi.size >= 0x2000 ? 0x2000 : 0x1000;
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if (R_FAILED(svcReadDebugProcessMemory(last_pages, debug_handle, mi.addr + mi.size - last_pages_size, last_pages_size))) {
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return;
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}
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/* Find GNU\x00 to locate start of Build ID. */
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for (int ofs = last_pages_size - 0x24; ofs >= 0; ofs--) {
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if (memcmp(last_pages + ofs, "GNU\x00", 4) == 0) {
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memcpy(build_id, last_pages + ofs + 4, 0x20);
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}
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}
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}
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const char *CodeList::GetFormattedAddressString(u64 address) {
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memset(this->address_str_buf, 0, sizeof(this->address_str_buf));
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for (unsigned int i = 0; i < this->code_count; i++) {
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if (this->code_infos[i].start_address <= address && address < this->code_infos[i].end_address) {
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snprintf(this->address_str_buf, sizeof(this->address_str_buf) - 1, "%016lx (%s + 0x%lx)", address, this->code_infos[i].name, address - this->code_infos[i].start_address);
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return this->address_str_buf;
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}
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}
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snprintf(this->address_str_buf, sizeof(this->address_str_buf) - 1, "%016lx", address);
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return this->address_str_buf;
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} |