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Atmosphere/stratosphere/loader/source/ldr_argument_store.cpp

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/*
* Copyright (c) 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>
#include "ldr_argument_store.hpp"
namespace ams::ldr {
int ArgumentStore::FindIndex(Entry *map, ncm::ProgramId program_id) {
for (auto i = 0; i < ArgumentMapCount; ++i) {
if (map[i].program_id == program_id) {
return i;
}
}
return -1;
}
const ArgumentStore::Entry *ArgumentStore::Get(ncm::ProgramId program_id) {
/* Find the matching arguments entry. */
Entry *argument = nullptr;
if (auto idx = FindIndex(m_argument_map, program_id); idx >= 0) {
argument = m_argument_map + idx;
}
return argument;
}
Result ArgumentStore::Set(ncm::ProgramId program_id, const void *argument, size_t size) {
/* Check that the argument size is within bounds. */
R_UNLESS(size < ArgumentBufferSize, ldr::ResultArgumentOverflow());
/* Find either a matching arguments entry, or an empty entry. */
auto idx = FindIndex(m_argument_map, program_id);
if (idx < 0) {
idx = FindIndex(m_argument_map, ncm::InvalidProgramId);
}
R_UNLESS(idx >= 0, ldr::ResultArgumentCountOverflow());
/* Set the arguments in the entry. */
auto &entry = m_argument_map[idx];
entry.program_id = program_id;
entry.argument_size = size;
std::memcpy(entry.argument, argument, entry.argument_size);
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R_SUCCEED();
}
}