Diamond75/Panda3DS
1
0
Fork 0
mirror of https://github.com/wheremyfoodat/Panda3DS.git synced 2025-05-04 03:04:48 +12:00
Code Issues Projects Releases Packages Wiki Activity Actions

[Kernel/Memory] Implement DATETIME0

Browse source
This commit is contained in:
wheremyfoodat 2022-09-24 03:57:21 +03:00
parent 61212c9341
commit 4da023c236
3 changed files with 19 additions and 1 deletions
src/core
memory.cpp

16
src/core/memory.cpp
View file

@ -2,6 +2,7 @@
#include "config_mem.hpp"
#include "resource_limits.hpp"
#include <cassert>
#include <chrono> // For time since epoch
using namespace KernelMemoryTypes;
@ -85,7 +86,11 @@ u32 Memory::read32(u32 vaddr) {
return *(u32*)(pointer + offset);
} else {
switch (vaddr) {
case ConfigMem::Datetime0: return u32(timeSince3DSEpoch()); // ms elapsed since Jan 1 1900, bottom 32 bits
case ConfigMem::Datetime0 + 4: return u32(timeSince3DSEpoch() >> 32); // top 32 bits
case ConfigMem::AppMemAlloc: return appResourceLimits.maxCommit;
case 0x1FF81000: return 0; // TODO: Figure out what this config mem address does
default:
Helpers::panic("Unimplemented 32-bit read, addr: %08X", vaddr);
break;
@ -350,4 +355,15 @@ void Memory::mapGSPSharedMemory(u32 vaddr, u32 myPerms, u32 otherPerms) {
const auto result = allocateMemory(vaddr, paddr, size, true, r, w, x);
if (!result.has_value())
Helpers::panic("Failed to allocated GSP shared memory");
}
// Get the number of ms since Jan 1 1900
u64 Memory::timeSince3DSEpoch() {
using namespace std::chrono;
// ms since Jan 1 1970
milliseconds ms = duration_cast<milliseconds>(system_clock::now().time_since_epoch());
// ms between Jan 1 1900 and Jan 1 1970 (2208988800 seconds elapsed between the two)
const u64 offset = 2208988800ull * 1000;
return ms.count() + offset;
}