maksw/nt-lite
1
0 Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

add missing fault handlers instead of throwing everything into the GP bin, add more ways to crash in native shell

Browse Source
This commit is contained in:
maksw authored and Maksymilian Wilczynski committed 2026-05-26 14:46:52 +02:00
1 parent e1248f4afe
commit 03bf767ac2
9 files changed
+425 -88
Download Patch File Download Diff File Expand all files Collapse all files

No files matched your search

code/kernel/ke_debug.c
+69 -18
View File
@@ -76,16 +76,66 @@ __declspec(dllexport) void KePrintConsole(const char* buf, size_t len) {
// can continue running everything else.
// ---------------------------------------------------------------------------
// Return the short exception name for a vector number.
// Return the short exception name for a CPU exception vector.
// Keep this table complete for vectors 0..31 so faults never collapse into
// a vague "general protection" bucket just because the IDT entry existed
// first or the crash printer lacked a name.
static const char* KiFaultVectorName(int vector) {
switch (vector) {
case 0: return "#DE Divide Error";
case 1: return "#DB Debug";
case 2: return "NMI Interrupt";
case 3: return "#BP Breakpoint";
case 4: return "#OF Overflow";
case 5: return "#BR Bound Range Exceeded";
case 6: return "#UD Invalid Opcode";
case 7: return "#NM Device Not Available";
case 8: return "#DF Double Fault";
case 9: return "Coprocessor Segment Overrun";
case 10: return "#TS Invalid TSS";
case 11: return "#NP Segment Not Present";
case 12: return "#SS Stack-Segment Fault";
case 13: return "#GP General Protection";
case 14: return "#PF Page Fault";
case 15: return "Reserved Exception 15";
case 16: return "#MF x87 Floating-Point Exception";
case 17: return "#AC Alignment Check";
case 18: return "#MC Machine Check";
case 19: return "#XM SIMD Floating-Point Exception";
case 20: return "#VE Virtualization Exception";
case 21: return "#CP Control Protection Exception";
case 22: return "Reserved Exception 22";
case 23: return "Reserved Exception 23";
case 24: return "Reserved Exception 24";
case 25: return "Reserved Exception 25";
case 26: return "Reserved Exception 26";
case 27: return "Reserved Exception 27";
case 28: return "#HV Hypervisor Injection Exception";
case 29: return "#VC VMM Communication Exception";
case 30: return "#SX Security Exception";
case 31: return "Reserved Exception 31";
default: return "Unknown Exception";
}
}
static int KiFaultHasErrorCode(int vector) {
switch (vector) {
case 8: // #DF
case 10: // #TS
case 11: // #NP
case 12: // #SS
case 13: // #GP
case 14: // #PF
case 17: // #AC
case 21: // #CP
case 29: // #VC
case 30: // #SX
return 1;
default:
return 0;
}
}
// Walk the process module list to find which image owns an address.
// Returns the module name string, or "unknown" if the address is outside all
// known image ranges. Base/size are optional and are useful for offset dumps.
@@ -391,23 +441,24 @@ __declspec(dllexport) _Noreturn void KeFaultDispatchFrame(const KFAULT_FRAME* fr
}
if ((frame->Cs & 3) == 0) {
switch ((int)frame->Vector) {
case 0:
KePanic("PANIC: #DE Divide Error | RIP: %016llx\n",
(unsigned long long)frame->Rip);
case 13:
KePanic("PANIC: #GP General Protection | RIP: %016llx | Code: %04llx\n",
(unsigned long long)frame->Rip,
(unsigned long long)frame->ErrorCode);
case 14:
KePanic("PANIC: #PF Page Fault | RIP: %016llx | Code: %04llx | CR2: %016llx\n",
(unsigned long long)frame->Rip,
(unsigned long long)frame->ErrorCode,
(unsigned long long)frame->Cr2);
default:
KePanic("PANIC: Exception #%llu | RIP: %016llx\n",
(unsigned long long)frame->Vector,
(unsigned long long)frame->Rip);
int vector = (int)frame->Vector;
const char* name = KiFaultVectorName(vector);
if (vector == 14) {
KePanic("PANIC: %s | RIP: %016llx | Code: %04llx | CR2: %016llx\n",
name,
(unsigned long long)frame->Rip,
(unsigned long long)frame->ErrorCode,
(unsigned long long)frame->Cr2);
} else if (KiFaultHasErrorCode(vector)) {
KePanic("PANIC: %s | RIP: %016llx | Code: %04llx\n",
name,
(unsigned long long)frame->Rip,
(unsigned long long)frame->ErrorCode);
} else {
KePanic("PANIC: %s | RIP: %016llx\n",
name,
(unsigned long long)frame->Rip);
}
}