#include "crashhandler.hpp"
#include <display.hpp>
#include <printf.h>
#include <debug.h>
#include <smp.hpp>
#include <cpu.hpp>
#if defined(__amd64__)
#include "../Architecture/amd64/cpu/gdt.hpp"
#elif defined(__i386__)
#elif defined(__aarch64__)
#endif
#include "../kernel.h"
#if defined(__amd64__)
void DivideByZeroExceptionHandler(CPU::x64::TrapFrame *Frame);
void DebugExceptionHandler(CPU::x64::TrapFrame *Frame);
void NonMaskableInterruptExceptionHandler(CPU::x64::TrapFrame *Frame);
void BreakpointExceptionHandler(CPU::x64::TrapFrame *Frame);
void OverflowExceptionHandler(CPU::x64::TrapFrame *Frame);
void BoundRangeExceptionHandler(CPU::x64::TrapFrame *Frame);
void InvalidOpcodeExceptionHandler(CPU::x64::TrapFrame *Frame);
void DeviceNotAvailableExceptionHandler(CPU::x64::TrapFrame *Frame);
void DoubleFaultExceptionHandler(CPU::x64::TrapFrame *Frame);
void CoprocessorSegmentOverrunExceptionHandler(CPU::x64::TrapFrame *Frame);
void InvalidTSSExceptionHandler(CPU::x64::TrapFrame *Frame);
void SegmentNotPresentExceptionHandler(CPU::x64::TrapFrame *Frame);
void StackFaultExceptionHandler(CPU::x64::TrapFrame *Frame);
void GeneralProtectionExceptionHandler(CPU::x64::TrapFrame *Frame);
void PageFaultExceptionHandler(CPU::x64::TrapFrame *Frame);
void x87FloatingPointExceptionHandler(CPU::x64::TrapFrame *Frame);
void AlignmentCheckExceptionHandler(CPU::x64::TrapFrame *Frame);
void MachineCheckExceptionHandler(CPU::x64::TrapFrame *Frame);
void SIMDFloatingPointExceptionHandler(CPU::x64::TrapFrame *Frame);
void VirtualizationExceptionHandler(CPU::x64::TrapFrame *Frame);
void SecurityExceptionHandler(CPU::x64::TrapFrame *Frame);
void UnknownExceptionHandler(CPU::x64::TrapFrame *Frame);
void UserModeExceptionHandler(CPU::x64::TrapFrame *Frame);
#endif
namespace CrashHandler
{
struct StackFrame
{
struct StackFrame *rbp;
uint64_t rip;
};
__attribute__((no_stack_protector)) void TraceFrames(CPU::x64::TrapFrame *Frame, int Count)
{
struct StackFrame *frames = (struct StackFrame *)Frame->rbp; // (struct StackFrame *)__builtin_frame_address(0);
debug("Stack tracing...");
EHPrint("\e7981FC\nStack Trace:\n");
if (!frames || !frames->rip || !frames->rbp)
{
EHPrint("\e2565CC%p", (void *)Frame->rip);
EHPrint("\e7925CC-");
EHPrint("\eAA25C%s", KernelSymbolTable->GetSymbolFromAddress(Frame->rip));
EHPrint("\e7981FC <- Exception");
EHPrint("\eFF0000\n< No stack trace available. >\n");
}
else
{
EHPrint("\e2565CC%p", (void *)Frame->rip);
EHPrint("\e7925CC-");
if (Frame->rip >= 0xFFFFFFFF80000000 && Frame->rip <= (uint64_t)&_kernel_end)
EHPrint("\eAA25CC%s", KernelSymbolTable->GetSymbolFromAddress(Frame->rip));
else
EHPrint("Outside Kernel");
EHPrint("\e7981FC <- Exception");
for (int frame = 0; frame < Count; ++frame)
{
if (!frames->rip)
break;
EHPrint("\n\e2565CC%p", (void *)frames->rip);
EHPrint("\e7925CC-");
if (frames->rip >= 0xFFFFFFFF80000000 && frames->rip <= (uint64_t)&_kernel_end)
EHPrint("\e25CCC9%s", KernelSymbolTable->GetSymbolFromAddress(frames->rip));
else
EHPrint("\eFF4CA9Outside Kernel");
if (!Memory::Virtual().Check(frames->rbp))
return;
frames = frames->rbp;
}
}
}
__attribute__((no_stack_protector)) void printfWrapper(char c, void *unused)
{
Display->Print(c, 255, true);
UNUSED(unused);
}
__attribute__((no_stack_protector)) void EHPrint(const char *Format, ...)
{
va_list args;
va_start(args, Format);
vfctprintf(printfWrapper, NULL, Format, args);
va_end(args);
}
__attribute__((no_stack_protector)) void Handle(void *Data)
{
#if defined(__amd64__)
CPU::x64::TrapFrame *Frame = (CPU::x64::TrapFrame *)Data;
error("Exception: %#llx", Frame->InterruptNumber);
if (Frame->cs != GDT_USER_CODE && Frame->cs != GDT_USER_DATA)
{
debug("Exception in kernel mode");
CPU::Interrupts(CPU::Disable);
Display->CreateBuffer(0, 0, 255);
}
else
{
debug("Exception in user mode");
UserModeExceptionHandler(Frame);
return;
}
debug("Reading control registers...");
CPU::x64::CR0 cr0 = CPU::x64::readcr0();
CPU::x64::CR2 cr2 = CPU::x64::readcr2();
CPU::x64::CR3 cr3 = CPU::x64::readcr3();
CPU::x64::CR4 cr4 = CPU::x64::readcr4();
CPU::x64::CR8 cr8 = CPU::x64::readcr8();
CPU::x64::EFER efer;
efer.raw = CPU::x64::rdmsr(CPU::x64::MSR_EFER);
uint64_t dr0, dr1, dr2, dr3, dr6;
CPU::x64::DR7 dr7;
// store debug registers
debug("Reading debug registers...");
asmv("movq %%dr0, %0"
: "=r"(dr0));
asmv("movq %%dr1, %0"
: "=r"(dr1));
asmv("movq %%dr2, %0"
: "=r"(dr2));
asmv("movq %%dr3, %0"
: "=r"(dr3));
asmv("movq %%dr6, %0"
: "=r"(dr6));
asmv("movq %%dr7, %0"
: "=r"(dr7));
switch (Frame->InterruptNumber)
{
case CPU::x64::DivideByZero:
{
DivideByZeroExceptionHandler(Frame);
break;
}
case CPU::x64::Debug:
{
DebugExceptionHandler(Frame);
break;
}
case CPU::x64::NonMaskableInterrupt:
{
NonMaskableInterruptExceptionHandler(Frame);
break;
}
case CPU::x64::Breakpoint:
{
BreakpointExceptionHandler(Frame);
break;
}
case CPU::x64::Overflow:
{
OverflowExceptionHandler(Frame);
break;
}
case CPU::x64::BoundRange:
{
BoundRangeExceptionHandler(Frame);
break;
}
case CPU::x64::InvalidOpcode:
{
InvalidOpcodeExceptionHandler(Frame);
break;
}
case CPU::x64::DeviceNotAvailable:
{
DeviceNotAvailableExceptionHandler(Frame);
break;
}
case CPU::x64::DoubleFault:
{
DoubleFaultExceptionHandler(Frame);
break;
}
case CPU::x64::CoprocessorSegmentOverrun:
{
CoprocessorSegmentOverrunExceptionHandler(Frame);
break;
}
case CPU::x64::InvalidTSS:
{
InvalidTSSExceptionHandler(Frame);
break;
}
case CPU::x64::SegmentNotPresent:
{
SegmentNotPresentExceptionHandler(Frame);
break;
}
case CPU::x64::StackSegmentFault:
{
StackFaultExceptionHandler(Frame);
break;
}
case CPU::x64::GeneralProtectionFault:
{
GeneralProtectionExceptionHandler(Frame);
break;
}
case CPU::x64::PageFault:
{
PageFaultExceptionHandler(Frame);
break;
}
case CPU::x64::x87FloatingPoint:
{
x87FloatingPointExceptionHandler(Frame);
break;
}
case CPU::x64::AlignmentCheck:
{
AlignmentCheckExceptionHandler(Frame);
break;
}
case CPU::x64::MachineCheck:
{
MachineCheckExceptionHandler(Frame);
break;
}
case CPU::x64::SIMDFloatingPoint:
{
SIMDFloatingPointExceptionHandler(Frame);
break;
}
case CPU::x64::Virtualization:
{
VirtualizationExceptionHandler(Frame);
break;
}
case CPU::x64::Security:
{
SecurityExceptionHandler(Frame);
break;
}
default:
{
UnknownExceptionHandler(Frame);
break;
}
}
EHPrint("\e7981FCTechnical Informations on CPU %lld:\n", GetCurrentCPU()->ID);
EHPrint("FS=%#llx GS=%#llx SS=%#llx CS=%#llx DS=%#llx\n",
CPU::x64::rdmsr(CPU::x64::MSR_FS_BASE), CPU::x64::rdmsr(CPU::x64::MSR_GS_BASE),
Frame->ss, Frame->cs, Frame->ds);
EHPrint("R8=%#llx R9=%#llx R10=%#llx R11=%#llx\n", Frame->r8, Frame->r9, Frame->r10, Frame->r11);
EHPrint("R12=%#llx R13=%#llx R14=%#llx R15=%#llx\n", Frame->r12, Frame->r13, Frame->r14, Frame->r15);
EHPrint("RAX=%#llx RBX=%#llx RCX=%#llx RDX=%#llx\n", Frame->rax, Frame->rbx, Frame->rcx, Frame->rdx);
EHPrint("RSI=%#llx RDI=%#llx RBP=%#llx RSP=%#llx\n", Frame->rsi, Frame->rdi, Frame->rbp, Frame->rsp);
EHPrint("RIP=%#llx RFL=%#llx INT=%#llx ERR=%#llx EFER=%#llx\n", Frame->rip, Frame->rflags.raw, Frame->InterruptNumber, Frame->ErrorCode, efer.raw);
EHPrint("CR0=%#llx CR2=%#llx CR3=%#llx CR4=%#llx CR8=%#llx\n", cr0.raw, cr2.raw, cr3.raw, cr4.raw, cr8.raw);
EHPrint("DR0=%#llx DR1=%#llx DR2=%#llx DR3=%#llx DR6=%#llx DR7=%#llx\n", dr0, dr1, dr2, dr3, dr6, dr7.raw);
EHPrint("\eFC797BCR0: PE:%s MP:%s EM:%s TS:%s\n ET:%s NE:%s WP:%s AM:%s\n NW:%s CD:%s PG:%s\n R0:%#x R1:%#x R2:%#x\n",
cr0.PE ? "True " : "False", cr0.MP ? "True " : "False", cr0.EM ? "True " : "False", cr0.TS ? "True " : "False",
cr0.ET ? "True " : "False", cr0.NE ? "True " : "False", cr0.WP ? "True " : "False", cr0.AM ? "True " : "False",
cr0.NW ? "True " : "False", cr0.CD ? "True " : "False", cr0.PG ? "True " : "False",
cr0.Reserved0, cr0.Reserved1, cr0.Reserved2);
EHPrint("\eFCBD79CR2: PFLA: %#llx\n",
cr2.PFLA);
EHPrint("\e79FC84CR3: PWT:%s PCD:%s PDBR:%#llx\n",
cr3.PWT ? "True " : "False", cr3.PCD ? "True " : "False", cr3.PDBR);
EHPrint("\eBD79FCCR4: VME:%s PVI:%s TSD:%s DE:%s\n PSE:%s PAE:%s MCE:%s PGE:%s\n PCE:%s UMIP:%s OSFXSR:%s OSXMMEXCPT:%s\n LA57:%s VMXE:%s SMXE:%s PCIDE:%s\n OSXSAVE:%s SMEP:%s SMAP:%s PKE:%s\n R0:%#x R1:%#x R2:%#x\n",
cr4.VME ? "True " : "False", cr4.PVI ? "True " : "False", cr4.TSD ? "True " : "False", cr4.DE ? "True " : "False",
cr4.PSE ? "True " : "False", cr4.PAE ? "True " : "False", cr4.MCE ? "True " : "False", cr4.PGE ? "True " : "False",
cr4.PCE ? "True " : "False", cr4.UMIP ? "True " : "False", cr4.OSFXSR ? "True " : "False", cr4.OSXMMEXCPT ? "True " : "False",
cr4.LA57 ? "True " : "False", cr4.VMXE ? "True " : "False", cr4.SMXE ? "True " : "False", cr4.PCIDE ? "True " : "False",
cr4.OSXSAVE ? "True " : "False", cr4.SMEP ? "True " : "False", cr4.SMAP ? "True " : "False", cr4.PKE ? "True " : "False",
cr4.Reserved0, cr4.Reserved1, cr4.Reserved2);
EHPrint("\e79FCF5CR8: TPL:%d\n", cr8.TPL);
EHPrint("\eFCFC02RFL: CF:%s PF:%s AF:%s ZF:%s\n SF:%s TF:%s IF:%s DF:%s\n OF:%s IOPL:%s NT:%s RF:%s\n VM:%s AC:%s VIF:%s VIP:%s\n ID:%s AlwaysOne:%d\n R0:%#x R1:%#x R2:%#x R3:%#x\n",
Frame->rflags.CF ? "True " : "False", Frame->rflags.PF ? "True " : "False", Frame->rflags.AF ? "True " : "False", Frame->rflags.ZF ? "True " : "False",
Frame->rflags.SF ? "True " : "False", Frame->rflags.TF ? "True " : "False", Frame->rflags.IF ? "True " : "False", Frame->rflags.DF ? "True " : "False",
Frame->rflags.OF ? "True " : "False", Frame->rflags.IOPL ? "True " : "False", Frame->rflags.NT ? "True " : "False", Frame->rflags.RF ? "True " : "False",
Frame->rflags.VM ? "True " : "False", Frame->rflags.AC ? "True " : "False", Frame->rflags.VIF ? "True " : "False", Frame->rflags.VIP ? "True " : "False",
Frame->rflags.ID ? "True " : "False", Frame->rflags.AlwaysOne,
Frame->rflags.Reserved0, Frame->rflags.Reserved1, Frame->rflags.Reserved2, Frame->rflags.Reserved3);
EHPrint("\eA0F0F0DR7: LDR0:%s GDR0:%s LDR1:%s GDR1:%s\n LDR2:%s GDR2:%s LDR3:%s GDR3:%s\n CDR0:%s SDR0:%s CDR1:%s SDR1:%s\n CDR2:%s SDR2:%s CDR3:%s SDR3:%s\n R:%#x\n",
dr7.LocalDR0 ? "True " : "False", dr7.GlobalDR0 ? "True " : "False", dr7.LocalDR1 ? "True " : "False", dr7.GlobalDR1 ? "True " : "False",
dr7.LocalDR2 ? "True " : "False", dr7.GlobalDR2 ? "True " : "False", dr7.LocalDR3 ? "True " : "False", dr7.GlobalDR3 ? "True " : "False",
dr7.ConditionsDR0 ? "True " : "False", dr7.SizeDR0 ? "True " : "False", dr7.ConditionsDR1 ? "True " : "False", dr7.SizeDR1 ? "True " : "False",
dr7.ConditionsDR2 ? "True " : "False", dr7.SizeDR2 ? "True " : "False", dr7.ConditionsDR3 ? "True " : "False", dr7.SizeDR3 ? "True " : "False",
dr7.Reserved);
EHPrint("\e009FF0EFER: SCE:%s LME:%s LMA:%s NXE:%s\n SVME:%s LMSLE:%s FFXSR:%s TCE:%s\n R0:%#x R1:%#x R2:%#x\n",
efer.SCE ? "True " : "False", efer.LME ? "True " : "False", efer.LMA ? "True " : "False", efer.NXE ? "True " : "False",
efer.SVME ? "True " : "False", efer.LMSLE ? "True " : "False", efer.FFXSR ? "True " : "False", efer.TCE ? "True " : "False",
efer.Reserved0, efer.Reserved1, efer.Reserved2);
// restore debug registers
debug("Restoring debug registers...");
asmv("movq %0, %%dr0"
:
: "r"(dr0));
asmv("movq %0, %%dr1"
:
: "r"(dr1));
asmv("movq %0, %%dr2"
:
: "r"(dr2));
asmv("movq %0, %%dr3"
:
: "r"(dr3));
asmv("movq %0, %%dr6"
:
: "r"(dr6));
asmv("movq %0, %%dr7"
:
: "r"(dr7));
TraceFrames(Frame, 20);
goto CrashEnd;
#elif defined(__i386__)
void *Frame = Data;
#elif defined(__aarch64__)
void *Frame = Data;
#endif
CrashEnd:
Display->SetBuffer(255);
CPU::Stop();
}
}
#if defined(__amd64__) || defined(__i386__)
static const char *PagefaultDescriptions[] = {
"Supervisory process tried to read a non-present page entry\n",
"Supervisory process tried to read a page and caused a protection fault\n",
"Supervisory process tried to write to a non-present page entry\n",
"Supervisory process tried to write a page and caused a protection fault\n",
"User process tried to read a non-present page entry\n",
"User process tried to read a page and caused a protection fault\n",
"User process tried to write to a non-present page entry\n",
"User process tried to write a page and caused a protection fault\n"};
#endif
#if defined(__amd64__)
#define staticbuffer(name) char name[] = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
__attribute__((no_stack_protector)) void DivideByZeroExceptionHandler(CPU::x64::TrapFrame *Frame)
{
fixme("Divide by zero exception\n");
}
__attribute__((no_stack_protector)) void DebugExceptionHandler(CPU::x64::TrapFrame *Frame)
{
CrashHandler::EHPrint("\eDD2920System crashed!\n");
CrashHandler::EHPrint("Kernel triggered debug exception.\n");
}
__attribute__((no_stack_protector)) void NonMaskableInterruptExceptionHandler(CPU::x64::TrapFrame *Frame) { fixme("NMI exception"); }
__attribute__((no_stack_protector)) void BreakpointExceptionHandler(CPU::x64::TrapFrame *Frame) { fixme("Breakpoint exception"); }
__attribute__((no_stack_protector)) void OverflowExceptionHandler(CPU::x64::TrapFrame *Frame) { fixme("Overflow exception"); }
__attribute__((no_stack_protector)) void BoundRangeExceptionHandler(CPU::x64::TrapFrame *Frame) { fixme("Bound range exception"); }
__attribute__((no_stack_protector)) void InvalidOpcodeExceptionHandler(CPU::x64::TrapFrame *Frame)
{
CrashHandler::EHPrint("\eDD2920System crashed!\n");
CrashHandler::EHPrint("Kernel tried to execute an invalid opcode.\n");
}
__attribute__((no_stack_protector)) void DeviceNotAvailableExceptionHandler(CPU::x64::TrapFrame *Frame) { fixme("Device not available exception"); }
__attribute__((no_stack_protector)) void DoubleFaultExceptionHandler(CPU::x64::TrapFrame *Frame) { fixme("Double fault exception"); }
__attribute__((no_stack_protector)) void CoprocessorSegmentOverrunExceptionHandler(CPU::x64::TrapFrame *Frame) { fixme("Coprocessor segment overrun exception"); }
__attribute__((no_stack_protector)) void InvalidTSSExceptionHandler(CPU::x64::TrapFrame *Frame) { fixme("Invalid TSS exception"); }
__attribute__((no_stack_protector)) void SegmentNotPresentExceptionHandler(CPU::x64::TrapFrame *Frame) { fixme("Segment not present exception"); }
__attribute__((no_stack_protector)) void StackFaultExceptionHandler(CPU::x64::TrapFrame *Frame)
{
staticbuffer(descbuf);
staticbuffer(desc_ext);
staticbuffer(desc_table);
staticbuffer(desc_idx);
staticbuffer(desc_tmp);
CPU::x64::SelectorErrorCode SelCode = {.raw = Frame->ErrorCode};
switch (SelCode.Table)
{
case 0b00:
memcpy(desc_tmp, "GDT", 3);
break;
case 0b01:
memcpy(desc_tmp, "IDT", 3);
break;
case 0b10:
memcpy(desc_tmp, "LDT", 3);
break;
case 0b11:
memcpy(desc_tmp, "IDT", 3);
break;
default:
memcpy(desc_tmp, "Unknown", 7);
break;
}
debug("external:%d table:%d idx:%#x", SelCode.External, SelCode.Table, SelCode.Idx);
sprintf_(descbuf, "Stack segment fault at address %#lx", Frame->rip);
CrashHandler::EHPrint(descbuf);
sprintf_(desc_ext, "External: %d", SelCode.External);
CrashHandler::EHPrint(desc_ext);
sprintf_(desc_table, "Table: %d (%s)", SelCode.Table, desc_tmp);
CrashHandler::EHPrint(desc_table);
sprintf_(desc_idx, "%s Index: %#x", desc_tmp, SelCode.Idx);
CrashHandler::EHPrint(desc_idx);
CrashHandler::EHPrint("\eDD2920System crashed!\n");
CrashHandler::EHPrint("More info about the exception:\n");
}
__attribute__((no_stack_protector)) void GeneralProtectionExceptionHandler(CPU::x64::TrapFrame *Frame)
{
// staticbuffer(descbuf);
// staticbuffer(desc_ext);
// staticbuffer(desc_table);
// staticbuffer(desc_idx);
// staticbuffer(desc_tmp);
// SelectorErrorCode SelCode = {.raw = ERROR_CODE};
// switch (SelCode.Table)
// {
// case CPU::x64::0b00:
// memcpy(desc_tmp, "GDT", 3);
// break;
// case CPU::x64::0b01:
// memcpy(desc_tmp, "IDT", 3);
// break;
// case CPU::x64::0b10:
// memcpy(desc_tmp, "LDT", 3);
// break;
// case CPU::x64::0b11:
// memcpy(desc_tmp, "IDT", 3);
// break;
// default:
// memcpy(desc_tmp, "Unknown", 7);
// break;
// }
// debug("external:%d table:%d idx:%#x", SelCode.External, SelCode.Table, SelCode.Idx);
// CurrentDisplay->SetPrintColor(0xDD2920);
// SET_PRINT_MID((char *)"System crashed!", FHeight(6));
// CurrentDisplay->ResetPrintColor();
// SET_PRINT_MID((char *)"More info about the exception:", FHeight(4));
// sprintf_(descbuf, "Kernel performed an illegal operation at address %#llx", RIP);
// SET_PRINT_MID((char *)descbuf, FHeight(5));
// sprintf_(desc_ext, "External: %d", SelCode.External);
// SET_PRINT_MID((char *)desc_ext, FHeight(3));
// sprintf_(desc_table, "Table: %d (%s)", SelCode.Table, desc_tmp);
// SET_PRINT_MID((char *)desc_table, FHeight(2));
// sprintf_(desc_idx, "%s Index: %#x", desc_tmp, SelCode.Idx);
// SET_PRINT_MID((char *)desc_idx, FHeight(1));
}
__attribute__((no_stack_protector)) void PageFaultExceptionHandler(CPU::x64::TrapFrame *Frame)
{
CPU::x64::PageFaultErrorCode params = {.raw = (uint32_t)Frame->ErrorCode};
// We can't use an allocator in exceptions (because that can cause another exception!) so, we'll just use a static buffer.
staticbuffer(ret_err);
staticbuffer(page_present);
staticbuffer(page_write);
staticbuffer(page_user);
staticbuffer(pageReserved);
staticbuffer(page_fetch);
staticbuffer(page_protection);
staticbuffer(page_shadow);
staticbuffer(page_sgx);
CrashHandler::EHPrint("\eDD2920System crashed!\n\eFFFFFF");
sprintf_(ret_err, "An exception occurred at %#lx by %#lx\n", CPU::x64::readcr2().PFLA, Frame->rip);
CrashHandler::EHPrint(ret_err);
sprintf_(page_present, "Page: %s\n", params.P ? "Present" : "Not Present");
CrashHandler::EHPrint(page_present);
sprintf_(page_write, "Write Operation: %s\n", params.W ? "Read-Only" : "Read-Write");
CrashHandler::EHPrint(page_write);
sprintf_(page_user, "Processor Mode: %s\n", params.U ? "User-Mode" : "Kernel-Mode");
CrashHandler::EHPrint(page_user);
sprintf_(pageReserved, "CPU Reserved Bits: %s\n", params.R ? "Reserved" : "Unreserved");
CrashHandler::EHPrint(pageReserved);
sprintf_(page_fetch, "Caused By An Instruction Fetch: %s\n", params.I ? "Yes" : "No");
CrashHandler::EHPrint(page_fetch);
sprintf_(page_protection, "Caused By A Protection-Key Violation: %s\n", params.PK ? "Yes" : "No");
CrashHandler::EHPrint(page_protection);
sprintf_(page_shadow, "Caused By A Shadow Stack Access: %s\n", params.SS ? "Yes" : "No");
CrashHandler::EHPrint(page_shadow);
sprintf_(page_sgx, "Caused By An SGX Violation: %s\n", params.SGX ? "Yes" : "No");
CrashHandler::EHPrint(page_sgx);
if (Frame->ErrorCode & 0x00000008)
CrashHandler::EHPrint("One or more page directory entries contain reserved bits which are set to 1.\n");
else
CrashHandler::EHPrint(PagefaultDescriptions[Frame->ErrorCode & 0b111]);
}
__attribute__((no_stack_protector)) void x87FloatingPointExceptionHandler(CPU::x64::TrapFrame *Frame) { fixme("x87 floating point exception"); }
__attribute__((no_stack_protector)) void AlignmentCheckExceptionHandler(CPU::x64::TrapFrame *Frame) { fixme("Alignment check exception"); }
__attribute__((no_stack_protector)) void MachineCheckExceptionHandler(CPU::x64::TrapFrame *Frame) { fixme("Machine check exception"); }
__attribute__((no_stack_protector)) void SIMDFloatingPointExceptionHandler(CPU::x64::TrapFrame *Frame) { fixme("SIMD floating point exception"); }
__attribute__((no_stack_protector)) void VirtualizationExceptionHandler(CPU::x64::TrapFrame *Frame) { fixme("Virtualization exception"); }
__attribute__((no_stack_protector)) void SecurityExceptionHandler(CPU::x64::TrapFrame *Frame) { fixme("Security exception"); }
__attribute__((no_stack_protector)) void UnknownExceptionHandler(CPU::x64::TrapFrame *Frame) { fixme("Unknown exception"); }
__attribute__((no_stack_protector)) void UserModeExceptionHandler(CPU::x64::TrapFrame *Frame)
{
CriticalSection cs;
debug("Interrupts? %s.", cs.IsInterruptsEnabled() ? "Yes" : "No");
fixme("Handling user mode exception");
TaskManager->GetCurrentThread()->Status = Tasking::TaskStatus::Terminated;
{
CPU::x64::CR0 cr0 = CPU::x64::readcr0();
CPU::x64::CR2 cr2 = CPU::x64::readcr2();
CPU::x64::CR3 cr3 = CPU::x64::readcr3();
CPU::x64::CR4 cr4 = CPU::x64::readcr4();
CPU::x64::CR8 cr8 = CPU::x64::readcr8();
CPU::x64::EFER efer;
efer.raw = CPU::x64::rdmsr(CPU::x64::MSR_EFER);
error("Technical Informations on CPU %lld:", GetCurrentCPU()->ID);
error("FS=%#llx GS=%#llx SS=%#llx CS=%#llx DS=%#llx",
CPU::x64::rdmsr(CPU::x64::MSR_FS_BASE), CPU::x64::rdmsr(CPU::x64::MSR_GS_BASE),
Frame->ss, Frame->cs, Frame->ds);
error("R8=%#llx R9=%#llx R10=%#llx R11=%#llx", Frame->r8, Frame->r9, Frame->r10, Frame->r11);
error("R12=%#llx R13=%#llx R14=%#llx R15=%#llx", Frame->r12, Frame->r13, Frame->r14, Frame->r15);
error("RAX=%#llx RBX=%#llx RCX=%#llx RDX=%#llx", Frame->rax, Frame->rbx, Frame->rcx, Frame->rdx);
error("RSI=%#llx RDI=%#llx RBP=%#llx RSP=%#llx", Frame->rsi, Frame->rdi, Frame->rbp, Frame->rsp);
error("RIP=%#llx RFL=%#llx INT=%#llx ERR=%#llx EFER=%#llx", Frame->rip, Frame->rflags.raw, Frame->InterruptNumber, Frame->ErrorCode, efer.raw);
error("CR0=%#llx CR2=%#llx CR3=%#llx CR4=%#llx CR8=%#llx", cr0.raw, cr2.raw, cr3.raw, cr4.raw, cr8.raw);
error("CR0: PE:%s MP:%s EM:%s TS:%s ET:%s NE:%s WP:%s AM:%s NW:%s CD:%s PG:%s R0:%#x R1:%#x R2:%#x",
cr0.PE ? "True " : "False", cr0.MP ? "True " : "False", cr0.EM ? "True " : "False", cr0.TS ? "True " : "False",
cr0.ET ? "True " : "False", cr0.NE ? "True " : "False", cr0.WP ? "True " : "False", cr0.AM ? "True " : "False",
cr0.NW ? "True " : "False", cr0.CD ? "True " : "False", cr0.PG ? "True " : "False",
cr0.Reserved0, cr0.Reserved1, cr0.Reserved2);
error("CR2: PFLA: %#llx",
cr2.PFLA);
error("CR3: PWT:%s PCD:%s PDBR:%#llx",
cr3.PWT ? "True " : "False", cr3.PCD ? "True " : "False", cr3.PDBR);
error("CR4: VME:%s PVI:%s TSD:%s DE:%s PSE:%s PAE:%s MCE:%s PGE:%s PCE:%s UMIP:%s OSFXSR:%s OSXMMEXCPT:%s LA57:%s VMXE:%s SMXE:%s PCIDE:%s OSXSAVE:%s SMEP:%s SMAP:%s PKE:%s R0:%#x R1:%#x R2:%#x",
cr4.VME ? "True " : "False", cr4.PVI ? "True " : "False", cr4.TSD ? "True " : "False", cr4.DE ? "True " : "False",
cr4.PSE ? "True " : "False", cr4.PAE ? "True " : "False", cr4.MCE ? "True " : "False", cr4.PGE ? "True " : "False",
cr4.PCE ? "True " : "False", cr4.UMIP ? "True " : "False", cr4.OSFXSR ? "True " : "False", cr4.OSXMMEXCPT ? "True " : "False",
cr4.LA57 ? "True " : "False", cr4.VMXE ? "True " : "False", cr4.SMXE ? "True " : "False", cr4.PCIDE ? "True " : "False",
cr4.OSXSAVE ? "True " : "False", cr4.SMEP ? "True " : "False", cr4.SMAP ? "True " : "False", cr4.PKE ? "True " : "False",
cr4.Reserved0, cr4.Reserved1, cr4.Reserved2);
error("CR8: TPL:%d", cr8.TPL);
error("RFL: CF:%s PF:%s AF:%s ZF:%s SF:%s TF:%s IF:%s DF:%s OF:%s IOPL:%s NT:%s RF:%s VM:%s AC:%s VIF:%s VIP:%s ID:%s AlwaysOne:%d R0:%#x R1:%#x R2:%#x R3:%#x",
Frame->rflags.CF ? "True " : "False", Frame->rflags.PF ? "True " : "False", Frame->rflags.AF ? "True " : "False", Frame->rflags.ZF ? "True " : "False",
Frame->rflags.SF ? "True " : "False", Frame->rflags.TF ? "True " : "False", Frame->rflags.IF ? "True " : "False", Frame->rflags.DF ? "True " : "False",
Frame->rflags.OF ? "True " : "False", Frame->rflags.IOPL ? "True " : "False", Frame->rflags.NT ? "True " : "False", Frame->rflags.RF ? "True " : "False",
Frame->rflags.VM ? "True " : "False", Frame->rflags.AC ? "True " : "False", Frame->rflags.VIF ? "True " : "False", Frame->rflags.VIP ? "True " : "False",
Frame->rflags.ID ? "True " : "False", Frame->rflags.AlwaysOne,
Frame->rflags.Reserved0, Frame->rflags.Reserved1, Frame->rflags.Reserved2, Frame->rflags.Reserved3);
error("EFER: SCE:%s LME:%s LMA:%s NXE:%s SVME:%s LMSLE:%s FFXSR:%s TCE:%s R0:%#x R1:%#x R2:%#x",
efer.SCE ? "True " : "False", efer.LME ? "True " : "False", efer.LMA ? "True " : "False", efer.NXE ? "True " : "False",
efer.SVME ? "True " : "False", efer.LMSLE ? "True " : "False", efer.FFXSR ? "True " : "False", efer.TCE ? "True " : "False",
efer.Reserved0, efer.Reserved1, efer.Reserved2);
}
switch (Frame->InterruptNumber)
{
case CPU::x64::DivideByZero:
{
break;
}
case CPU::x64::Debug:
{
break;
}
case CPU::x64::NonMaskableInterrupt:
{
break;
}
case CPU::x64::Breakpoint:
{
break;
}
case CPU::x64::Overflow:
{
break;
}
case CPU::x64::BoundRange:
{
break;
}
case CPU::x64::InvalidOpcode:
{
break;
}
case CPU::x64::DeviceNotAvailable:
{
break;
}
case CPU::x64::DoubleFault:
{
break;
}
case CPU::x64::CoprocessorSegmentOverrun:
{
break;
}
case CPU::x64::InvalidTSS:
{
break;
}
case CPU::x64::SegmentNotPresent:
{
break;
}
case CPU::x64::StackSegmentFault:
{
break;
}
case CPU::x64::GeneralProtectionFault:
{
break;
}
case CPU::x64::PageFault:
{
CPU::x64::PageFaultErrorCode params = {.raw = (uint32_t)Frame->ErrorCode};
error("An exception occurred at %#lx by %#lx", CPU::x64::readcr2().PFLA, Frame->rip);
error("Page: %s", params.P ? "Present" : "Not Present");
error("Write Operation: %s", params.W ? "Read-Only" : "Read-Write");
error("Processor Mode: %s", params.U ? "User-Mode" : "Kernel-Mode");
error("CPU Reserved Bits: %s", params.R ? "Reserved" : "Unreserved");
error("Caused By An Instruction Fetch: %s", params.I ? "Yes" : "No");
error("Caused By A Protection-Key Violation: %s", params.PK ? "Yes" : "No");
error("Caused By A Shadow Stack Access: %s", params.SS ? "Yes" : "No");
error("Caused By An SGX Violation: %s", params.SGX ? "Yes" : "No");
if (Frame->ErrorCode & 0x00000008)
error("One or more page directory entries contain reserved bits which are set to 1.");
else
error(PagefaultDescriptions[Frame->ErrorCode & 0b111]);
break;
}
case CPU::x64::x87FloatingPoint:
{
break;
}
case CPU::x64::AlignmentCheck:
{
break;
}
case CPU::x64::MachineCheck:
{
break;
}
case CPU::x64::SIMDFloatingPoint:
{
break;
}
case CPU::x64::Virtualization:
{
break;
}
case CPU::x64::Security:
{
break;
}
default:
{
break;
}
}
}
#endif