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Use pragma pack directions for tightly packing structs containing u128

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Using `__attribute__((packed))` doesn't work in new NDKs when a struct contains 128-bit integer members, likely because of a ndk/compiler bug. We now enclose the requiring structs in `#pragma pack` directives to tightly pack them.
This commit is contained in:
lynxnb 2022-08-17 12:22:11 +02:00
parent c4bf92a49f
commit e9618d9e2c
1 changed files with 10 additions and 2 deletions
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12
app/src/main/cpp/skyline/services/timesrv/common.h
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@ -60,11 +60,17 @@ namespace skyline::service::timesrv {
}
};
/*
* Using __attribute__((packed)) doesn't work in new NDKs when a struct contains 128-bit integer members, likely because of a ndk/compiler bug
* Use #pragma pack to ensure that the following structs are tightly packed
*/
#pragma pack(1)
/**
* @brief Holds details about a point in time sourced from a steady clock (e.g. RTC)
* @url https://switchbrew.org/w/index.php?title=PSC_services#SteadyClockTimePoint
*/
struct __attribute__((packed)) SteadyClockTimePoint {
struct SteadyClockTimePoint {
i64 timePoint; //!< Time in seconds
UUID clockSourceId; //!< The UUID of the steady clock this timepoint comes from
@ -76,7 +82,7 @@ namespace skyline::service::timesrv {
* @brief Describes a system clocks offset from its associated steady clock
* @url https://switchbrew.org/w/index.php?title=PSC_services#SystemClockContext
*/
struct __attribute__((packed)) SystemClockContext {
struct SystemClockContext {
i64 offset; // Offset between the steady timepoint and the epoch
SteadyClockTimePoint timestamp; //!< The steady timepoint this context was calibrated from
@ -84,6 +90,8 @@ namespace skyline::service::timesrv {
};
static_assert(sizeof(SystemClockContext) == 0x20);
#pragma pack()
/**
* @brief A particular time point in Nintendo's calendar format
* @url https://switchbrew.org/w/index.php?title=PSC_services#CalendarTime