Fennix/Kernel
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Create a new stack for kernel and update BootInfo structure before anything else

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This commit is contained in:
Alex 2023-05-08 05:29:32 +03:00
parent c9e2d99570
commit 1efc8f9537
Signed by untrusted user who does not match committer: enderice2
GPG Key ID: EACC3AD603BAB4DD
1 changed files with 15 additions and 6 deletions
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21
Kernel.cpp
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@ -255,11 +255,8 @@ EXTERNC void KPrint(const char *Format, ...)
Display->SetBuffer(0);
}
EXTERNC NIF void Main(BootInfo *Info)
EXTERNC NIF void Main()
{
memcpy(&bInfo, Info, sizeof(BootInfo));
debug("BootInfo structure is at %p", bInfo);
Display = new Video::Display(bInfo.Framebuffer[0]);
KPrint("%s - %s [\e058C19%s\eFFFFFF]", KERNEL_NAME, KERNEL_VERSION, GIT_COMMIT_SHORT);
KPrint("CPU: \e058C19%s \e8822AA%s \e8888FF%s", CPU::Hypervisor(), CPU::Vendor(), CPU::Name());
@ -272,7 +269,7 @@ EXTERNC NIF void Main(BootInfo *Info)
Interrupts::Initialize(0);
KPrint("Loading Kernel Symbols");
KernelSymbolTable = new SymbolResolver::Symbols((uintptr_t)Info->Kernel.FileBase);
KernelSymbolTable = new SymbolResolver::Symbols((uintptr_t)bInfo.Kernel.FileBase);
KPrint("Reading Kernel Parameters");
ParseConfig((char *)bInfo.Kernel.CommandLine, &Config);
@ -483,6 +480,9 @@ EXTERNC __no_stack_protector NIF void Entry(BootInfo *Info)
DebuggerIsAttached = true;
}
memcpy(&bInfo, Info, sizeof(BootInfo));
debug("BootInfo structure is at %p", &bInfo);
// https://wiki.osdev.org/Calling_Global_Constructors
trace("There are %d constructors to call", __init_array_end - __init_array_start);
for (CallPtr *func = __init_array_start; func != __init_array_end; func++)
@ -499,8 +499,17 @@ EXTERNC __no_stack_protector NIF void Entry(BootInfo *Info)
TestMemoryAllocation();
#endif
void *KernelStackAddress = KernelAllocator.RequestPages(TO_PAGES(STACK_SIZE));
uintptr_t KernelStack = (uintptr_t)KernelStackAddress + STACK_SIZE - 0x10;
debug("Kernel stack: %#lx-%#lx", KernelStackAddress, KernelStack);
asmv("mov %0, %%rsp"
:
: "r"(KernelStack)
: "memory");
asmv("mov $0, %rbp");
EnableProfiler = true;
Main(Info);
Main();
}
#pragma GCC diagnostic ignored "-Wdelete-non-virtual-dtor"