mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-12-23 12:51:13 +00:00
265 lines
10 KiB
C++
265 lines
10 KiB
C++
/*
|
|
* Copyright (c) 2018-2020 Atmosphère-NX
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#include "creport_modules.hpp"
|
|
#include "creport_utils.hpp"
|
|
|
|
namespace ams::creport {
|
|
|
|
namespace {
|
|
|
|
/* Convenience definitions/types. */
|
|
constexpr size_t ModulePathLengthMax = 0x200;
|
|
constexpr u8 GnuSignature[4] = {'G', 'N', 'U', 0};
|
|
|
|
struct ModulePath {
|
|
u32 zero;
|
|
u32 path_length;
|
|
char path[ModulePathLengthMax];
|
|
};
|
|
static_assert(sizeof(ModulePath) == 0x208, "ModulePath definition!");
|
|
|
|
struct RoDataStart {
|
|
union {
|
|
u64 deprecated_rwdata_offset;
|
|
ModulePath module_path;
|
|
};
|
|
};
|
|
static_assert(sizeof(RoDataStart) == sizeof(ModulePath), "RoDataStart definition!");
|
|
|
|
/* Globals. */
|
|
u8 g_last_rodata_pages[2 * os::MemoryPageSize];
|
|
|
|
}
|
|
|
|
void ModuleList::SaveToFile(FILE *f_report) {
|
|
fprintf(f_report, " Number of Modules: %zu\n", this->num_modules);
|
|
for (size_t i = 0; i < this->num_modules; i++) {
|
|
const auto& module = this->modules[i];
|
|
fprintf(f_report, " Module %02zu:\n", i);
|
|
fprintf(f_report, " Address: %016lx-%016lx\n", module.start_address, module.end_address);
|
|
if (std::strcmp(this->modules[i].name, "") != 0) {
|
|
fprintf(f_report, " Name: %s\n", module.name);
|
|
}
|
|
DumpMemoryHexToFile(f_report, " Build Id: ", module.build_id, sizeof(module.build_id));
|
|
}
|
|
}
|
|
|
|
void ModuleList::FindModulesFromThreadInfo(Handle debug_handle, const ThreadInfo &thread) {
|
|
/* Set the debug handle, for access in other member functions. */
|
|
this->debug_handle = debug_handle;
|
|
|
|
/* Try to add the thread's PC. */
|
|
this->TryAddModule(thread.GetPC());
|
|
|
|
/* Try to add the thread's LR. */
|
|
this->TryAddModule(thread.GetLR());
|
|
|
|
/* Try to add all the addresses in the thread's stacktrace. */
|
|
for (size_t i = 0; i < thread.GetStackTraceSize(); i++) {
|
|
this->TryAddModule(thread.GetStackTrace(i));
|
|
}
|
|
}
|
|
|
|
void ModuleList::TryAddModule(uintptr_t guess) {
|
|
/* Try to locate module from guess. */
|
|
uintptr_t base_address = 0;
|
|
if (!this->TryFindModule(&base_address, guess)) {
|
|
return;
|
|
}
|
|
|
|
/* Check whether we already have this module. */
|
|
for (size_t i = 0; i < this->num_modules; i++) {
|
|
if (this->modules[i].start_address <= base_address && base_address < this->modules[i].end_address) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* Add all contiguous modules. */
|
|
uintptr_t cur_address = base_address;
|
|
while (this->num_modules < ModuleCountMax) {
|
|
/* Get the region extents. */
|
|
MemoryInfo mi;
|
|
u32 pi;
|
|
if (R_FAILED(svcQueryDebugProcessMemory(&mi, &pi, this->debug_handle, cur_address))) {
|
|
break;
|
|
}
|
|
|
|
/* Parse module. */
|
|
if (mi.perm == Perm_Rx) {
|
|
auto& module = this->modules[this->num_modules++];
|
|
module.start_address = mi.addr;
|
|
module.end_address = mi.addr + mi.size;
|
|
GetModuleName(module.name, module.start_address, module.end_address);
|
|
GetModuleBuildId(module.build_id, module.end_address);
|
|
/* Some homebrew won't have a name. Add a fake one for readability. */
|
|
if (std::strcmp(module.name, "") == 0) {
|
|
std::snprintf(module.name, sizeof(module.name), "[%02x%02x%02x%02x]", module.build_id[0], module.build_id[1], module.build_id[2], module.build_id[3]);
|
|
}
|
|
}
|
|
|
|
/* If we're out of readable memory, we're done reading code. */
|
|
if (mi.type == MemType_Unmapped || mi.type == MemType_Reserved) {
|
|
break;
|
|
}
|
|
|
|
/* Verify we're not getting stuck in an infinite loop. */
|
|
if (mi.size == 0 || cur_address + mi.size <= cur_address) {
|
|
break;
|
|
}
|
|
|
|
cur_address += mi.size;
|
|
}
|
|
}
|
|
|
|
bool ModuleList::TryFindModule(uintptr_t *out_address, uintptr_t guess) {
|
|
/* Query the memory region our guess falls in. */
|
|
MemoryInfo mi;
|
|
u32 pi;
|
|
if (R_FAILED(svcQueryDebugProcessMemory(&mi, &pi, this->debug_handle, guess))) {
|
|
return false;
|
|
}
|
|
|
|
/* If we fall into a RW region, it may be rwdata. Query the region before it, which may be rodata or text. */
|
|
if (mi.perm == Perm_Rw) {
|
|
if (R_FAILED(svcQueryDebugProcessMemory(&mi, &pi, debug_handle, mi.addr - 4))) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/* If we fall into an RO region, it may be rodata. Query the region before it, which should be text. */
|
|
if (mi.perm == Perm_R) {
|
|
if (R_FAILED(svcQueryDebugProcessMemory(&mi, &pi, debug_handle, mi.addr - 4))) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/* We should, at this point, be looking at an executable region (text). */
|
|
if (mi.perm != Perm_Rx) {
|
|
return false;
|
|
}
|
|
|
|
/* Modules are a series of contiguous (text/rodata/rwdata) regions. */
|
|
/* Iterate backwards until we find unmapped memory, to find the start of the set of modules loaded here. */
|
|
while (mi.addr > 0) {
|
|
if (R_FAILED(svcQueryDebugProcessMemory(&mi, &pi, debug_handle, mi.addr - 4))) {
|
|
return false;
|
|
}
|
|
|
|
if (mi.type == MemType_Unmapped) {
|
|
/* We've found unmapped memory, so output the mapped memory afterwards. */
|
|
*out_address = mi.addr + mi.size;
|
|
return true;
|
|
}
|
|
}
|
|
|
|
/* Something weird happened here. */
|
|
return false;
|
|
}
|
|
|
|
void ModuleList::GetModuleName(char *out_name, uintptr_t text_start_address, uintptr_t ro_start_address) {
|
|
/* Clear output. */
|
|
std::memset(out_name, 0, ModuleNameLengthMax);
|
|
|
|
/* Read module path from process memory. */
|
|
RoDataStart rodata_start;
|
|
{
|
|
MemoryInfo mi;
|
|
u32 pi;
|
|
|
|
/* Verify .rodata is read-only. */
|
|
if (R_FAILED(svcQueryDebugProcessMemory(&mi, &pi, this->debug_handle, ro_start_address)) || mi.perm != Perm_R) {
|
|
return;
|
|
}
|
|
|
|
/* Calculate start of rwdata. */
|
|
const u64 rw_start_address = mi.addr + mi.size;
|
|
|
|
/* Read start of .rodata. */
|
|
if (R_FAILED(svcReadDebugProcessMemory(&rodata_start, this->debug_handle, ro_start_address, sizeof(rodata_start)))) {
|
|
return;
|
|
}
|
|
|
|
/* If data is valid under deprecated format, there's no name. */
|
|
if (text_start_address + rodata_start.deprecated_rwdata_offset == rw_start_address) {
|
|
return;
|
|
}
|
|
|
|
/* Also validate that we're looking at a valid name. */
|
|
if (rodata_start.module_path.zero != 0 || rodata_start.module_path.path_length != strnlen(rodata_start.module_path.path, sizeof(rodata_start.module_path.path))) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
|
|
/* Start after last slash in path. */
|
|
const char *path = rodata_start.module_path.path;
|
|
int ofs;
|
|
for (ofs = rodata_start.module_path.path_length; ofs >= 0; ofs--) {
|
|
if (path[ofs] == '/' || path[ofs] == '\\') {
|
|
break;
|
|
}
|
|
}
|
|
ofs++;
|
|
|
|
/* Copy name to output. */
|
|
const size_t name_size = std::min(ModuleNameLengthMax, sizeof(rodata_start.module_path.path) - ofs);
|
|
std::strncpy(out_name, path + ofs, name_size);
|
|
out_name[ModuleNameLengthMax - 1] = '\x00';
|
|
}
|
|
|
|
void ModuleList::GetModuleBuildId(u8 *out_build_id, uintptr_t ro_start_address) {
|
|
/* Clear output. */
|
|
std::memset(out_build_id, 0, ModuleBuildIdLength);
|
|
|
|
/* Verify .rodata is read-only. */
|
|
MemoryInfo mi;
|
|
u32 pi;
|
|
if (R_FAILED(svcQueryDebugProcessMemory(&mi, &pi, this->debug_handle, ro_start_address)) || mi.perm != Perm_R) {
|
|
return;
|
|
}
|
|
|
|
/* We want to read the last two pages of .rodata. */
|
|
const size_t read_size = mi.size >= sizeof(g_last_rodata_pages) ? sizeof(g_last_rodata_pages) : (sizeof(g_last_rodata_pages) / 2);
|
|
if (R_FAILED(svcReadDebugProcessMemory(g_last_rodata_pages, this->debug_handle, mi.addr + mi.size - read_size, read_size))) {
|
|
return;
|
|
}
|
|
|
|
/* Find GNU\x00 to locate start of build id. */
|
|
for (int ofs = read_size - sizeof(GnuSignature) - ModuleBuildIdLength; ofs >= 0; ofs--) {
|
|
if (std::memcmp(g_last_rodata_pages + ofs, GnuSignature, sizeof(GnuSignature)) == 0) {
|
|
std::memcpy(out_build_id, g_last_rodata_pages + ofs + sizeof(GnuSignature), ModuleBuildIdLength);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
const char *ModuleList::GetFormattedAddressString(uintptr_t address) {
|
|
/* Print default formatted string. */
|
|
std::snprintf(this->address_str_buf, sizeof(this->address_str_buf), "%016lx", address);
|
|
|
|
/* See if the address is inside a module, for pretty-printing. */
|
|
for (size_t i = 0; i < this->num_modules; i++) {
|
|
const auto& module = this->modules[i];
|
|
if (module.start_address <= address && address < module.end_address) {
|
|
std::snprintf(this->address_str_buf, sizeof(this->address_str_buf), "%016lx (%s + 0x%lx)", address, module.name, address - module.start_address);
|
|
break;
|
|
}
|
|
}
|
|
|
|
return this->address_str_buf;
|
|
}
|
|
|
|
}
|