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Kernel/aarch64: Dump registers when unknown exception occurs

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This is useful when debugging baremetal issues.
This commit is contained in:
Timon Kruiper 2023-05-15 20:21:17 +02:00 committed by Andrew Kaster
parent 5d4e9a0673
commit 65ed5419ae
Notes: sideshowbarker 2024-07-17 05:58:46 +09:00 
Author: https://github.com/FireFox317
Commit: https://github.com/SerenityOS/serenity/commit/65ed5419ae
Pull-request: https://github.com/SerenityOS/serenity/pull/18861
Reviewed-by: https://github.com/nico ✅
1 changed files with 2 additions and 0 deletions
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2
Kernel/Arch/aarch64/Interrupts.cpp
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@ -89,6 +89,7 @@ extern "C" void exception_common(Kernel::TrapFrame* trap_frame)
if (Aarch64::exception_class_is_data_abort(esr_el1.EC) || Aarch64::exception_class_is_instruction_abort(esr_el1.EC)) { if (Aarch64::exception_class_is_data_abort(esr_el1.EC) || Aarch64::exception_class_is_instruction_abort(esr_el1.EC)) {
auto page_fault_or_error = page_fault_from_exception_syndrome_register(VirtualAddress(fault_address), esr_el1); auto page_fault_or_error = page_fault_from_exception_syndrome_register(VirtualAddress(fault_address), esr_el1);
if (page_fault_or_error.is_error()) { if (page_fault_or_error.is_error()) {
dump_registers(*trap_frame->regs);
handle_crash(*trap_frame->regs, "Unknown page fault", SIGSEGV, false); handle_crash(*trap_frame->regs, "Unknown page fault", SIGSEGV, false);
} else { } else {
auto page_fault = page_fault_or_error.release_value(); auto page_fault = page_fault_or_error.release_value();
@ -97,6 +98,7 @@ extern "C" void exception_common(Kernel::TrapFrame* trap_frame)
} else if (Aarch64::exception_class_is_svc_instruction_execution(esr_el1.EC)) { } else if (Aarch64::exception_class_is_svc_instruction_execution(esr_el1.EC)) {
syscall_handler(trap_frame); syscall_handler(trap_frame);
} else { } else {
dump_registers(*trap_frame->regs);
handle_crash(*trap_frame->regs, "Unexpected exception", SIGSEGV, false); handle_crash(*trap_frame->regs, "Unexpected exception", SIGSEGV, false);
} }