blob: 18a04f00ffcf66ef4a8dd952f8d24bc2702aed5b [file] [log] [blame]
// Copyright 2018 The Fuchsia Authors
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file or at
#include <lib/crashlog/panic_buffer.h>
#include <zircon/boot/crash-reason.h>
#include <arch/crashlog_regs.h>
#include <kernel/persistent_ram.h>
#include <ktl/span.h>
#include <vm/vm_object.h>
#define MIN_CRASHLOG_SIZE 2048
static constexpr size_t kMinCrashlogSize = MIN_CRASHLOG_SIZE;
static_assert((kMinCrashlogSize % kPersistentRamAllocationGranularity) == 0,
"Minimum reserved crashlog size must be a multiple of the persistent RAM allocation "
typedef struct {
uintptr_t base_address;
crashlog_regs_t regs;
} crashlog_t;
extern crashlog_t g_crashlog;
// Serialize the crashlog to string into target. If `reason' is OOM, then a
// different preamble will be used, and the backtrace will not be included.
size_t crashlog_to_string(ktl::span<char> target, zircon_crash_reason_t reason);
// Stash the recovered crashlog for later retrieval with |crashlog_get_stashed|.
void crashlog_stash(fbl::RefPtr<VmObject> crashlog);
// Returns the previously stashed recovered crashlog, or nullptr.
fbl::RefPtr<VmObject> crashlog_get_stashed();
extern PanicBuffer panic_buffer;
// A FILE that writes to both |stdout| and the global |panic_buffer|.
extern FILE stdout_panic_buffer;