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Memory related code optimization

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This commit is contained in:
Alex
2022-12-05 00:48:41 +02:00
parent f34278891b
commit 2d1c42fbcd
9 changed files with 123 additions and 57 deletions
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7
Tasking/Task.cpp
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@ -516,6 +516,9 @@ namespace Tasking
*Frame = CurrentCPU->CurrentThread->Registers;
GlobalDescriptorTable::SetKernelStack((void *)((uint64_t)CurrentCPU->CurrentThread->Stack->GetStackTop()));
CPU::x64::writecr3({.raw = (uint64_t)CurrentCPU->CurrentProcess->PageTable});
// Not sure if this is needed, but it's better to be safe than sorry.
asmv("movq %cr3, %rax");
asmv("movq %rax, %cr3");
CPU::x64::fxrstor(CurrentCPU->CurrentThread->FXRegion);
CPU::x64::wrmsr(CPU::x64::MSR_GS_BASE, CurrentCPU->CurrentThread->GSBase);
CPU::x64::wrmsr(CPU::x64::MSR_FS_BASE, CurrentCPU->CurrentThread->FSBase);
@ -882,6 +885,7 @@ namespace Tasking
for (uint64_t i = 0; i < ArgvSize; i++)
{
void *Tmp = KernelAllocator.RequestPages(TO_PAGES(strlen(argv[i]) + 1));
debug("argv[%d] ptr %#lx", i, (uint64_t)Tmp);
Memory::Virtual().Map(Tmp, Tmp, Memory::PTFlag::RW | Memory::PTFlag::US);
_argv = (uint8_t *)Tmp;
strcpy((char *)_argv, argv[i]);
@ -893,6 +897,7 @@ namespace Tasking
for (uint64_t i = 0; i < EnvpSize; i++)
{
void *Tmp = KernelAllocator.RequestPages(TO_PAGES(strlen(envp[i]) + 1));
debug("envp[%d] ptr %#lx", i, (uint64_t)Tmp);
Memory::Virtual().Map(Tmp, Tmp, Memory::PTFlag::RW | Memory::PTFlag::US);
_envp = (uint8_t *)Tmp;
strcpy((char *)_envp, envp[i]);
@ -957,7 +962,7 @@ namespace Tasking
Thread->Info.Architecture = Architecture;
Thread->Info.Compatibility = Compatibility;
debug("Thread offset is %#lx (EntryPoint:%#lx)", Thread->Offset, Thread->EntryPoint);
debug("Thread offset is %#lx (EntryPoint: %#lx) => RIP: %#lx", Thread->Offset, Thread->EntryPoint, Thread->Registers.rip);
if (Parent->Security.TrustLevel == TaskTrustLevel::User)
debug("Thread stack region is %#lx-%#lx (U) and rsp is %#lx", Thread->Stack->GetStackBottom(), Thread->Stack->GetStackTop(), Thread->Registers.rsp);
else