Atmosphere/libraries/libstratosphere/source/diag/impl/diag_module_impl.os.horizon.cpp

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/*
* 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 <stratosphere.hpp>
namespace ams::diag::impl {
namespace {
constexpr inline uintptr_t ModulePathLengthOffset = 4;
constexpr inline uintptr_t ModulePathOffset = 8;
}
uintptr_t GetModuleInfoForHorizon(const char **out_path, size_t *out_path_length, size_t *out_module_size, uintptr_t address) {
/* Check for null address. */
if (address == 0) {
return 0;
}
/* Get module info. */
ro::impl::ExceptionInfo exception_info;
if (!ro::impl::GetExceptionInfo(std::addressof(exception_info), address)) {
return 0;
}
/* Locate the path in the first non-read-execute segment. */
svc::MemoryInfo mem_info;
svc::PageInfo page_info;
auto cur_address = exception_info.module_address;
while (cur_address < exception_info.module_address + exception_info.module_size) {
if (R_FAILED(svc::QueryMemory(std::addressof(mem_info), std::addressof(page_info), cur_address))) {
return 0;
}
if (mem_info.perm != svc::MemoryPermission_ReadExecute) {
break;
}
cur_address += mem_info.size;
}
/* Set output info. */
*out_path = reinterpret_cast<const char *>(cur_address + ModulePathOffset);
*out_path_length = *reinterpret_cast<const u32 *>(cur_address + ModulePathLengthOffset);
*out_module_size = exception_info.module_size;
return exception_info.module_address;
}
}