bce01591f3
Several minor changes related to debug output. - Colorize the debugcon logger like the userspace one. - Display the process and thread for each cpu in the panic display - Skip the panic() frame in panic back traces - Don't try to follow obviously bad (non-canonical) stack frame pointers
58 lines
1.4 KiB
C++
58 lines
1.4 KiB
C++
#include "assert.h"
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#include "idt.h"
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namespace panic {
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uint32_t *apic_icr = reinterpret_cast<uint32_t*>(0xffffc000fee00300);
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void const *symbol_table = nullptr;
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void
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install(uintptr_t entrypoint, util::const_buffer symbol_data)
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{
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IDT::set_nmi_handler(entrypoint);
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symbol_table = symbol_data.pointer;
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}
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[[ noreturn ]]
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void panic(
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const char *message,
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const cpu_state *user,
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const char *function,
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const char *file,
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uint64_t line)
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{
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cpu_data &cpu = current_cpu();
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// Grab the global panic block for ourselves
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cpu.panic = __atomic_exchange_n(&g_panic_data_p, nullptr, __ATOMIC_ACQ_REL);
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// If we aren't the first CPU to panic, cpu.panic will be null
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if (cpu.panic) {
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cpu.panic->symbol_data = symbol_table;
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cpu.panic->user_state = user;
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cpu.panic->message = message;
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cpu.panic->function = function;
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cpu.panic->file = file;
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cpu.panic->line = line;
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cpu.panic->cpus = g_num_cpus;
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static constexpr uint32_t send_nmi_command =
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(4 << 8) | // Delivery mode NMI
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(1 << 14) | // assert level high
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(2 << 18); // destination all
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*apic_icr = send_nmi_command;
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}
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while (1) asm ("hlt");
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}
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} // namespace panic
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extern "C"
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void __assert_fail(const char *message, const char *file, unsigned line, const char *function) {
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panic::panic(message, nullptr, function, file, line);
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}
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