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[common] unify std::random_device (#3801)

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Signed-off-by: lizzie <lizzie@eden-emu.dev>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3801
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>
Co-authored-by: lizzie <lizzie@eden-emu.dev>
Co-committed-by: lizzie <lizzie@eden-emu.dev>
This commit is contained in:
lizzie 2026-03-31 20:12:41 +02:00 • committed by crueter
parent dd91b41a78
commit ee2891c55e
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GPG key ID: 425ACD2D4830EBC6
18 changed files with 85 additions and 66 deletions
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12
src/core/hle/kernel/board/nintendo/nx/k_system_control.cpp
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@ -1,4 +1,4 @@
// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
// SPDX-License-Identifier: GPL-3.0-or-later
// SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
@ -7,6 +7,7 @@
#include <random>
#include "common/literals.h"
#include "common/random.h"
#include "common/settings.h"
#include "core/hle/kernel/board/nintendo/nx/k_system_control.h"
@ -201,15 +202,8 @@ u64 GenerateUniformRange(u64 min, u64 max, F f) {
} // Anonymous namespace
u64 KSystemControl::GenerateRandomU64() {
std::random_device device;
std::mt19937 gen(device());
std::uniform_int_distribution<u64> distribution(1, (std::numeric_limits<u64>::max)());
return distribution(gen);
}
u64 KSystemControl::GenerateRandomRange(u64 min, u64 max) {
return GenerateUniformRange(min, max, GenerateRandomU64);
return GenerateUniformRange(min, max, Common::Random::GetMT19937());
}
size_t KSystemControl::CalculateRequiredSecureMemorySize(size_t size, u32 pool) {

4
src/core/hle/kernel/board/nintendo/nx/k_system_control.h
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@ -1,3 +1,6 @@
// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
// SPDX-License-Identifier: GPL-3.0-or-later
// SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
@ -33,7 +36,6 @@ public:
// Randomness.
static u64 GenerateRandomRange(u64 min, u64 max);
static u64 GenerateRandomU64();
// Secure Memory.
static size_t CalculateRequiredSecureMemorySize(size_t size, u32 pool);

5
src/core/hle/kernel/k_page_bitmap.h
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@ -1,4 +1,4 @@
// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
// SPDX-License-Identifier: GPL-3.0-or-later
// SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
@ -14,6 +14,7 @@
#include "common/bit_util.h"
#include "common/common_types.h"
#include "common/tiny_mt.h"
#include "common/random.h"
#include "core/hle/kernel/k_system_control.h"
namespace Kernel {
@ -23,7 +24,7 @@ public:
class RandomBitGenerator {
public:
RandomBitGenerator() {
m_rng.Initialize(static_cast<u32>(KSystemControl::GenerateRandomU64()));
m_rng.Initialize(u32(Common::Random::Random64(0)));
}
u64 SelectRandomBit(u64 bitmap) {

9
src/core/hle/kernel/k_thread.cpp
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@ -20,6 +20,7 @@
#include "common/fiber.h"
#include "common/logging.h"
#include "common/settings.h"
#include "common/random.h"
#include "core/core.h"
#include "core/cpu_manager.h"
#include "core/hardware_properties.h"
@ -45,8 +46,7 @@ namespace {
constexpr inline s32 TerminatingThreadPriority = Kernel::Svc::SystemThreadPriorityHighest - 1;
static void ResetThreadContext32(Kernel::Svc::ThreadContext& ctx, u64 stack_top, u64 entry_point,
u64 arg) {
static void ResetThreadContext32(Kernel::Svc::ThreadContext& ctx, u64 stack_top, u64 entry_point, u64 arg) {
ctx = {};
ctx.r[0] = arg;
ctx.r[15] = entry_point;
@ -55,11 +55,10 @@ static void ResetThreadContext32(Kernel::Svc::ThreadContext& ctx, u64 stack_top,
ctx.fpsr = 0;
}
static void ResetThreadContext64(Kernel::Svc::ThreadContext& ctx, u64 stack_top, u64 entry_point,
u64 arg) {
static void ResetThreadContext64(Kernel::Svc::ThreadContext& ctx, u64 stack_top, u64 entry_point, u64 arg) {
ctx = {};
ctx.r[0] = arg;
ctx.r[18] = Kernel::KSystemControl::GenerateRandomU64() | 1;
ctx.r[18] = Common::Random::Random64(0) | 1;
ctx.pc = entry_point;
ctx.sp = stack_top;
ctx.fpcr = 0;

12
src/core/hle/service/mii/mii_util.h
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@ -1,3 +1,6 @@
// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
// SPDX-License-Identifier: GPL-3.0-or-later
// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
@ -7,6 +10,7 @@
#include <span>
#include "common/common_types.h"
#include "common/random.h"
#include "common/swap.h"
#include "common/uuid.h"
#include "core/hle/service/mii/mii_types.h"
@ -65,11 +69,9 @@ public:
template <typename T>
static T GetRandomValue(T min, T max) {
std::random_device device;
std::mt19937 gen(device());
std::uniform_int_distribution<u64> distribution(static_cast<u64>(min),
static_cast<u64>(max));
return static_cast<T>(distribution(gen));
std::uniform_int_distribution<u64> distribution{u64(min), u64(max)};
auto gen = Common::Random::GetMT19937();
return T(distribution(gen));
}
template <typename T>