diff options
| -rw-r--r-- | src/core/core_timing.h | 2 | ||||
| -rw-r--r-- | src/core/hle/shared_page.cpp | 57 | ||||
| -rw-r--r-- | src/core/hle/shared_page.h | 5 |
3 files changed, 61 insertions, 3 deletions
diff --git a/src/core/core_timing.h b/src/core/core_timing.h index 64f5b06d9..3d8a7d0c0 100644 --- a/src/core/core_timing.h +++ b/src/core/core_timing.h @@ -26,7 +26,7 @@ extern int g_clock_rate_arm11; inline s64 msToCycles(int ms) { - return g_clock_rate_arm11 / 1000 * ms; + return (s64)g_clock_rate_arm11 / 1000 * ms; } inline s64 msToCycles(float ms) { diff --git a/src/core/hle/shared_page.cpp b/src/core/hle/shared_page.cpp index 2a1caeaac..4d9272923 100644 --- a/src/core/hle/shared_page.cpp +++ b/src/core/hle/shared_page.cpp @@ -2,8 +2,11 @@ // Licensed under GPLv2 or any later version // Refer to the license.txt file included. +#include <chrono> #include <cstring> +#include <ctime> +#include "core/core_timing.h" #include "core/hle/shared_page.h" //////////////////////////////////////////////////////////////////////////////////////////////////// @@ -12,6 +15,57 @@ namespace SharedPage { SharedPageDef shared_page; +static int update_time_event; + +/// Gets system time in 3DS format. The epoch is Jan 1900, and the unit is millisecond. +static u64 GetSystemTime() { + auto now = std::chrono::system_clock::now(); + + // 3DS system does't allow user to set a time before Jan 1 2000, + // so we use it as an auxiliary epoch to calculate the console time. + std::tm epoch_tm; + epoch_tm.tm_sec = 0; + epoch_tm.tm_min = 0; + epoch_tm.tm_hour = 0; + epoch_tm.tm_mday = 1; + epoch_tm.tm_mon = 0; + epoch_tm.tm_year = 100; + epoch_tm.tm_isdst = 0; + auto epoch = std::chrono::system_clock::from_time_t(std::mktime(&epoch_tm)); + + // 3DS console time uses Jan 1 1900 as internal epoch, + // so we use the milliseconds between 1900 and 2000 as base console time + u64 console_time = 3155673600000ULL; + + // Only when system time is after 2000, we set it as 3DS system time + if (now > epoch) { + console_time += std::chrono::duration_cast<std::chrono::milliseconds>(now - epoch).count(); + } + + // If the system time is in daylight saving, we give an additional hour to console time + std::time_t now_time_t = std::chrono::system_clock::to_time_t(now); + std::tm* now_tm = std::localtime(&now_time_t); + if (now_tm && now_tm->tm_isdst > 0) + console_time += 60 * 60 * 1000; + + return console_time; +} + +static void UpdateTimeCallback(u64 userdata, int cycles_late) { + DateTime& date_time = shared_page.date_time_counter % 2 ? + shared_page.date_time_0 : shared_page.date_time_1; + + date_time.date_time = GetSystemTime(); + date_time.update_tick = CoreTiming::GetTicks(); + date_time.tick_to_second_coefficient = g_clock_rate_arm11; + date_time.tick_offset = 0; + + ++shared_page.date_time_counter; + + // system time is updated hourly + CoreTiming::ScheduleEvent(msToCycles(60 * 60 * 1000) - cycles_late, update_time_event); +} + void Init() { std::memset(&shared_page, 0, sizeof(shared_page)); @@ -19,6 +73,9 @@ void Init() { // Some games wait until this value becomes 0x1, before asking running_hw shared_page.unknown_value = 0x1; + + update_time_event = CoreTiming::RegisterEvent("SharedPage::UpdateTimeCallback", UpdateTimeCallback); + CoreTiming::ScheduleEvent(0, update_time_event); } } // namespace diff --git a/src/core/hle/shared_page.h b/src/core/hle/shared_page.h index 35a07c685..cd9246726 100644 --- a/src/core/hle/shared_page.h +++ b/src/core/hle/shared_page.h @@ -25,13 +25,14 @@ namespace SharedPage { struct DateTime { u64_le date_time; // 0 u64_le update_tick; // 8 - INSERT_PADDING_BYTES(0x20 - 0x10); // 10 + u64_le tick_to_second_coefficient; // 10 + u64_le tick_offset; // 18 }; static_assert(sizeof(DateTime) == 0x20, "Datetime size is wrong"); struct SharedPageDef { // Most of these names are taken from the 3dbrew page linked above. - u32_le date_time_selector; // 0 + u32_le date_time_counter; // 0 u8 running_hw; // 4 /// "Microcontroller hardware info" u8 mcu_hw_info; // 5 |