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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/nacl/loader/nonsfi/irt_interfaces.h"
#include <cstring>
namespace nacl {
namespace nonsfi {
namespace {
// This table keeps a pair of IRT entry (such as nacl_irt_basic, nacl_irt_fdio
// etc.) and its registered name with its version (such as NACL_IRT_BASIC_v0_1,
// NACL_IRT_DEV_FDIO_v0_1, etc.).
struct NaClInterfaceTable {
const char* name;
const void* table;
size_t size;
};
#define NACL_INTERFACE_TABLE(name, value) { name, &value, sizeof(value) }
const NaClInterfaceTable kIrtInterfaces[] = {
NACL_INTERFACE_TABLE(NACL_IRT_BASIC_v0_1, kIrtBasic),
NACL_INTERFACE_TABLE(NACL_IRT_DEV_FDIO_v0_1, kIrtFdIO),
NACL_INTERFACE_TABLE(NACL_IRT_THREAD_v0_1, kIrtThread),
NACL_INTERFACE_TABLE(NACL_IRT_FUTEX_v0_1, kIrtFutex),
NACL_INTERFACE_TABLE(NACL_IRT_TLS_v0_1, kIrtTls),
};
#undef NACL_INTERFACE_TABLE
} // namespace
size_t NaClIrtInterface(const char* interface_ident,
void* table, size_t tablesize) {
for (size_t i = 0; i < arraysize(kIrtInterfaces); ++i) {
if (std::strcmp(interface_ident, kIrtInterfaces[i].name) == 0) {
const size_t size = kIrtInterfaces[i].size;
if (size <= tablesize) {
std::memcpy(table, kIrtInterfaces[i].table, size);
return size;
}
break;
}
}
return 0;
}
} // namespace nonsfi
} // namespace nacl
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