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[Kernel] CreateThread stub

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wheremyfoodat 2022-09-19 16:29:50 +03:00
parent 765b51696e
commit 1c4348248d
8 changed files with 58 additions and 7 deletions
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5
src/core/kernel/kernel.cpp
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@ -6,6 +6,7 @@ void Kernel::serviceSVC(u32 svc) {
switch (svc) {
case 0x01: controlMemory(); break;
case 0x02: queryMemory(); break;
case 0x08: createThread(); break;
case 0x17: createEvent(); break;
case 0x1F: mapMemoryBlock(); break;
case 0x21: createAddressArbiter(); break;
@ -57,6 +58,7 @@ void Kernel::deleteObjectData(KernelObject& object) {
void Kernel::reset() {
handleCounter = 0;
threadCount = 0;
for (auto& object : objects) {
deleteObjectData(object);
@ -68,6 +70,9 @@ void Kernel::reset() {
// Allocate handle #0 to a dummy object and make a main process object
makeObject(KernelObjectType::Dummy);
currentProcess = makeProcess();
// Make main thread object. We do not have to set the entrypoint and SP for it as the ROM loader does.
// Main thread seems to have a priority of 0x30
currentThread = makeThread(0, 0, 0x30, 0);
// Create global service manager port
makePort("srv:");

33
src/core/kernel/threads.cpp
View file

@ -0,0 +1,33 @@
#include "kernel.hpp"
#include "resource_limits.hpp"
// Internal OS function to spawn a thread
Handle Kernel::makeThread(u32 entrypoint, u32 initialSP, u32 priority, u32 id) {
if (threadCount >= appResourceLimits.maxThreads) {
Helpers::panic("Overflowed the number of threads");
}
threadCount++;
// TODO: Actually create the thread
return makeObject(KernelObjectType::Thread);
}
// Result CreateThread(s32 priority, ThreadFunc entrypoint, u32 arg, u32 stacktop, s32 threadPriority, s32 processorID)
void Kernel::createThread() {
u32 priority = regs[0];
u32 entrypoint = regs[1];
u32 initialSP = regs[3] & ~7; // SP is force-aligned to 8 bytes
u32 id = regs[4];
printf("CreateThread(entry = %08X, stacktop = %08X, priority = %X, processor ID = %d)\n", entrypoint,
initialSP, priority, id);
if (!(priority <= 0x3F)) [[unlikely]] {
Helpers::panic("Created thread with bad priority value %X", priority);
regs[0] = SVCResult::BadThreadPriority;
return;
}
regs[0] = SVCResult::Success;
regs[1] = makeThread(entrypoint, initialSP, priority, id);
}