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Diffstat (limited to 'Kernel')
-rw-r--r--Kernel/i386.cpp116
1 files changed, 33 insertions, 83 deletions
diff --git a/Kernel/i386.cpp b/Kernel/i386.cpp
index 9cb38f1921..33fabb49e7 100644
--- a/Kernel/i386.cpp
+++ b/Kernel/i386.cpp
@@ -121,12 +121,9 @@ asm( \
" iret\n" \
);
-// 6: Invalid Opcode
-EH_ENTRY_NO_CODE(6);
-void exception_6_handler(RegisterDump& regs)
+template<typename DumpType>
+static void dump(const DumpType& regs)
{
- kprintf("%s invalid opcode: %u(%s)\n", current->is_ring0() ? "Kernel" : "Process", current->pid(), current->name().characters());
-
word ss;
dword esp;
if (current->is_ring0()) {
@@ -137,11 +134,37 @@ void exception_6_handler(RegisterDump& regs)
esp = regs.esp_if_crossRing;
}
+ if constexpr (IsSame<DumpType, RegisterDumpWithExceptionCode>::value) {
+ kprintf("exception code: %w\n", regs.exception_code);
+ }
kprintf("pc=%w:%x ds=%w es=%w fs=%w gs=%w\n", regs.cs, regs.eip, regs.ds, regs.es, regs.fs, regs.gs);
kprintf("stk=%w:%x\n", ss, esp);
kprintf("eax=%x ebx=%x ecx=%x edx=%x\n", regs.eax, regs.ebx, regs.ecx, regs.edx);
kprintf("ebp=%x esp=%x esi=%x edi=%x\n", regs.ebp, esp, regs.esi, regs.edi);
+ if (current->validate_read((void*)regs.eip, 8)) {
+ byte* codeptr = (byte*)regs.eip;
+ kprintf("code: %b %b %b %b %b %b %b %b\n",
+ codeptr[0],
+ codeptr[1],
+ codeptr[2],
+ codeptr[3],
+ codeptr[4],
+ codeptr[5],
+ codeptr[6],
+ codeptr[7]);
+ }
+}
+
+
+// 6: Invalid Opcode
+EH_ENTRY_NO_CODE(6);
+void exception_6_handler(RegisterDump& regs)
+{
+ kprintf("%s invalid opcode: %u(%s)\n", current->is_ring0() ? "Kernel" : "Process", current->pid(), current->name().characters());
+
+ dump(regs);
+
if (current->is_ring0()) {
kprintf("Oh shit, we've crashed in ring 0 :(\n");
hang();
@@ -176,21 +199,7 @@ void exception_7_handler(RegisterDump& regs)
#ifdef FPU_EXCEPTION_DEBUG
kprintf("%s FPU not available exception: %u(%s)\n", current->is_ring0() ? "Kernel" : "Process", current->pid(), current->name().characters());
-
- word ss;
- dword esp;
- if (current->is_ring0()) {
- ss = regs.ds;
- esp = regs.esp;
- } else {
- ss = regs.ss_if_crossRing;
- esp = regs.esp_if_crossRing;
- }
-
- kprintf("pc=%w:%x ds=%w es=%w fs=%w gs=%w\n", regs.cs, regs.eip, regs.ds, regs.es, regs.fs, regs.gs);
- kprintf("stk=%w:%x\n", ss, esp);
- kprintf("eax=%x ebx=%x ecx=%x edx=%x\n", regs.eax, regs.ebx, regs.ecx, regs.edx);
- kprintf("ebp=%x esp=%x esi=%x edi=%x\n", regs.ebp, esp, regs.esi, regs.edi);
+ dump(regs);
#endif
}
@@ -201,20 +210,7 @@ void exception_0_handler(RegisterDump& regs)
{
kprintf("%s DIVIDE ERROR: %u(%s)\n", current->is_ring0() ? "Kernel" : "User", current->pid(), current->name().characters());
- word ss;
- dword esp;
- if (current->is_ring0()) {
- ss = regs.ds;
- esp = regs.esp;
- } else {
- ss = regs.ss_if_crossRing;
- esp = regs.esp_if_crossRing;
- }
-
- kprintf("pc=%w:%x ds=%w es=%w fs=%w gs=%w\n", regs.cs, regs.eip, regs.ds, regs.es, regs.fs, regs.gs);
- kprintf("stk=%w:%x\n", ss, esp);
- kprintf("eax=%x ebx=%x ecx=%x edx=%x\n", regs.eax, regs.ebx, regs.ecx, regs.edx);
- kprintf("ebp=%x esp=%x esi=%x edi=%x\n", regs.ebp, esp, regs.esi, regs.edi);
+ dump(regs);
if (current->is_ring0()) {
kprintf("Oh shit, we've crashed in ring 0 :(\n");
@@ -231,21 +227,7 @@ void exception_13_handler(RegisterDumpWithExceptionCode& regs)
{
kprintf("%s GPF: %u(%s)\n", current->is_ring0() ? "Kernel" : "User", current->pid(), current->name().characters());
- word ss;
- dword esp;
- if (current->is_ring0()) {
- ss = regs.ds;
- esp = regs.esp;
- } else {
- ss = regs.ss_if_crossRing;
- esp = regs.esp_if_crossRing;
- }
-
- kprintf("exception code: %w\n", regs.exception_code);
- kprintf("pc=%w:%x ds=%w es=%w fs=%w gs=%w\n", regs.cs, regs.eip, regs.ds, regs.es, regs.fs, regs.gs);
- kprintf("stk=%w:%x\n", ss, esp);
- kprintf("eax=%x ebx=%x ecx=%x edx=%x\n", regs.eax, regs.ebx, regs.ecx, regs.edx);
- kprintf("ebp=%x esp=%x esi=%x edi=%x\n", regs.ebp, esp, regs.esi, regs.edi);
+ dump(regs);
if (current->is_ring0()) {
kprintf("Oh shit, we've crashed in ring 0 :(\n");
@@ -278,40 +260,8 @@ void exception_14_handler(RegisterDumpWithExceptionCode& regs)
faultAddress);
#endif
- word ss;
- dword esp;
- if (current->is_ring0()) {
- ss = regs.ds;
- esp = regs.esp;
- } else {
- ss = regs.ss_if_crossRing;
- esp = regs.esp_if_crossRing;
- }
-
- auto dump_registers_and_code = [&] {
- dbgprintf("exception code: %w\n", regs.exception_code);
- dbgprintf("pc=%w:%x ds=%w es=%w fs=%w gs=%w\n", regs.cs, regs.eip, regs.ds, regs.es, regs.fs, regs.gs);
- dbgprintf("stk=%w:%x\n", ss, esp);
- dbgprintf("eax=%x ebx=%x ecx=%x edx=%x\n", regs.eax, regs.ebx, regs.ecx, regs.edx);
- dbgprintf("ebp=%x esp=%x esi=%x edi=%x\n", regs.ebp, esp, regs.esi, regs.edi);
-
- if (current->validate_read((void*)regs.eip, 8)) {
- byte* codeptr = (byte*)regs.eip;
- dbgprintf("code: %b %b %b %b %b %b %b %b\n",
- codeptr[0],
- codeptr[1],
- codeptr[2],
- codeptr[3],
- codeptr[4],
- codeptr[5],
- codeptr[6],
- codeptr[7]
- );
- }
- };
-
#ifdef PAGE_FAULT_DEBUG
- dump_registers_and_code();
+ dump(regs);
#endif
auto response = MM.handle_page_fault(PageFault(regs.exception_code, LinearAddress(faultAddress)));
@@ -322,7 +272,7 @@ void exception_14_handler(RegisterDumpWithExceptionCode& regs)
current->pid(),
regs.exception_code & 2 ? "write" : "read",
faultAddress);
- dump_registers_and_code();
+ dump(regs);
current->crash();
} else if (response == PageFaultResponse::Continue) {
#ifdef PAGE_FAULT_DEBUG
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 12:10:56 +0000