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Kernel/aarch64: Move exception handler to Interrupts.cpp

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Also dump the registers in a nicer format.
This commit is contained in:
Timon Kruiper 2023-01-08 13:23:55 +01:00 committed by Andreas Kling
parent 22b1e1076a
commit 05659debd1
Notes: sideshowbarker 2024-07-18 05:37:06 +09:00 
Author: https://github.com/FireFox317
Commit: https://github.com/SerenityOS/serenity/commit/05659debd1
Pull-request: https://github.com/SerenityOS/serenity/pull/16911
Reviewed-by: https://github.com/ADKaster
Reviewed-by: https://github.com/nico ✅
2 changed files with 55 additions and 35 deletions
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55
Kernel/Arch/aarch64/Interrupts.cpp
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@ -10,9 +10,64 @@
#include <Kernel/Interrupts/GenericInterruptHandler.h>
#include <Kernel/Interrupts/SharedIRQHandler.h>
#include <Kernel/Interrupts/UnhandledInterruptHandler.h>
#include <Kernel/KSyms.h>
#include <Kernel/StdLib.h>
namespace Kernel {
static void dump_registers(RegisterState const& regs)
{
dbgln(" x0={:p} x1={:p} x2={:p} x3={:p} x4={:p}", regs.x[0], regs.x[1], regs.x[2], regs.x[3], regs.x[4]);
dbgln(" x5={:p} x6={:p} x7={:p} x8={:p} x9={:p}", regs.x[5], regs.x[6], regs.x[7], regs.x[8], regs.x[9]);
dbgln("x10={:p} x11={:p} x12={:p} x13={:p} x14={:p}", regs.x[10], regs.x[11], regs.x[12], regs.x[13], regs.x[14]);
dbgln("x15={:p} x16={:p} x17={:p} x18={:p} x19={:p}", regs.x[15], regs.x[16], regs.x[17], regs.x[18], regs.x[19]);
dbgln("x20={:p} x21={:p} x22={:p} x23={:p} x24={:p}", regs.x[20], regs.x[21], regs.x[22], regs.x[23], regs.x[24]);
dbgln("x25={:p} x26={:p} x27={:p} x28={:p} x29={:p}", regs.x[25], regs.x[26], regs.x[27], regs.x[28], regs.x[29]);
dbgln("x30={:p}", regs.x[30]);
// Special registers
Aarch64::SPSR_EL1 spsr_el1 = {};
memcpy(&spsr_el1, (u8 const*)&regs.spsr_el1, sizeof(u64));
dbgln("spsr_el1: 0x{:x} (NZCV({:#b}) DAIF({:#b}) M({:#b}))", regs.spsr_el1, ((regs.spsr_el1 >> 28) & 0b1111), ((regs.spsr_el1 >> 6) & 0b1111), regs.spsr_el1 & 0b1111);
dbgln("elr_el1: 0x{:x}", regs.elr_el1);
dbgln("tpidr_el0: 0x{:x}", regs.tpidr_el0);
dbgln("sp_el0: 0x{:x}", regs.sp_el0);
constexpr bool print_backtrace = true;
if constexpr (print_backtrace) {
auto const* symbol = symbolicate_kernel_address(regs.elr_el1);
dbgln("{:p} {} +{}", regs.elr_el1, (symbol ? symbol->name : "(k?)"), (symbol ? regs.elr_el1 - symbol->address : 0));
dump_backtrace_from_base_pointer(regs.x[29]);
}
}
static void dump_exception_syndrome_register(Aarch64::ESR_EL1 const& esr_el1)
{
dbgln("esr_el1: EC({:#b}) IL({:#b}) ISS({:#b}) ISS2({:#b})", esr_el1.EC, esr_el1.IL, esr_el1.ISS, esr_el1.ISS2);
dbgln("Exception Class: {}", Aarch64::exception_class_to_string(esr_el1.EC));
if (Aarch64::exception_class_has_set_far(esr_el1.EC))
dbgln("Faulting Virtual Address: 0x{:x}", Aarch64::FAR_EL1::read().virtual_address);
if (Aarch64::exception_class_is_data_abort(esr_el1.EC))
dbgln("Data Fault Status Code: {}", Aarch64::data_fault_status_code_to_string(esr_el1.ISS));
}
extern "C" void exception_common(Kernel::TrapFrame const* const trap_frame);
extern "C" void exception_common(Kernel::TrapFrame const* const trap_frame)
{
auto esr_el1 = Kernel::Aarch64::ESR_EL1::read();
constexpr bool print_state = true;
if constexpr (print_state) {
dbgln("Exception Generated by processor!");
dump_registers(*trap_frame->regs);
dump_exception_syndrome_register(esr_el1);
}
Kernel::Processor::halt();
}
static Array<GenericInterruptHandler*, 64> s_interrupt_handlers;
extern "C" void handle_interrupt(TrapFrame&);

35
Kernel/Arch/aarch64/init.cpp
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@ -31,41 +31,6 @@
#include <Kernel/Panic.h>
#include <Kernel/Scheduler.h>
extern "C" void exception_common(Kernel::TrapFrame const* const trap_frame);
extern "C" void exception_common(Kernel::TrapFrame const* const trap_frame)
{
constexpr bool print_stack_frame = true;
if constexpr (print_stack_frame) {
dbgln("Exception Generated by processor!");
auto* regs = trap_frame->regs;
for (auto reg = 0; reg < 31; reg++) {
dbgln("x{}: {:x}", reg, regs->x[reg]);
}
// Special registers
dbgln("spsr_el1: {:x}", regs->spsr_el1);
dbgln("elr_el1: {:x}", regs->elr_el1);
dbgln("tpidr_el0: {:x}", regs->tpidr_el0);
dbgln("sp_el0: {:x}", regs->sp_el0);
auto esr_el1 = Kernel::Aarch64::ESR_EL1::read();
dbgln("esr_el1: EC({:#b}) IL({:#b}) ISS({:#b}) ISS2({:#b})", esr_el1.EC, esr_el1.IL, esr_el1.ISS, esr_el1.ISS2);
dbgln("Exception Class: {}", Aarch64::exception_class_to_string(esr_el1.EC));
if (Aarch64::exception_class_has_set_far(esr_el1.EC))
dbgln("Faulting Virtual Address: 0x{:x}", Aarch64::FAR_EL1::read().virtual_address);
if (Aarch64::exception_class_is_data_abort(esr_el1.EC))
dbgln("Data Fault Status Code: {}", Aarch64::data_fault_status_code_to_string(esr_el1.ISS));
dump_backtrace_from_base_pointer(regs->x[29]);
}
Kernel::Processor::halt();
}
typedef void (*ctor_func_t)();
extern ctor_func_t start_heap_ctors[];
extern ctor_func_t end_heap_ctors[];