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/*
* Copyright (c) 2021, Patrick Meyer <git@the-space.agency>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <Kernel/Devices/KCOVDevice.h>
#include <Kernel/Tasks/Thread.h>
extern bool g_in_early_boot;
extern "C" {
void __sanitizer_cov_trace_pc(void);
void __sanitizer_cov_trace_pc(void)
{
if (g_in_early_boot) [[unlikely]]
return;
if (Processor::current_in_irq()) [[unlikely]] {
// Do not trace in interrupts.
return;
}
auto const* thread = Thread::current();
auto tid = thread->tid();
auto maybe_kcov_instance = KCOVDevice::thread_instance->get(tid);
if (!maybe_kcov_instance.has_value()) [[likely]] {
// not traced
return;
}
auto* kcov_instance = maybe_kcov_instance.value();
if (kcov_instance->state() < KCOVInstance::TRACING) [[likely]]
return;
kcov_instance->buffer_add_pc((u64)__builtin_return_address(0));
}
}
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