panic.hpp File Reference

#include "mos/platform/platform_defs.hpp"
#include "mos/syslog/printk.hpp"
#include <mos/types.h>
#include <stdarg.h>

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Classes
struct	panic_hook_t
struct	panic_point_t

Macros
#define	MOS_EMIT_PANIC_HOOK(e, f, n)
#define	MOS_PANIC_HOOK_FEAT(_feat, _f, _n)
#define	MOS_PANIC_HOOK(_f, _name)
#define	MOS_MAKE_PANIC_POINT(panic_instruction, file, func, line)
#define	mos_panic(fmt, ...)
#define	mos_panic_inline(fmt, ...)

Typedefs
typedef void	kmsg_handler_t(const char *func, u32 line, const char *fmt, va_list args)

Functions
	MOS_STATIC_ASSERT (sizeof(panic_hook_t)==32, "panic_hook_t size mismatch")
void	kwarn_handler_set (kmsg_handler_t *handler)
void	kwarn_handler_remove (void)
void	mos_kwarn (const char *func, u32 line, const char *fmt,...)
void	try_handle_kernel_panics (ptr_t ip)
void	handle_kernel_panic (const panic_point_t *point)

Macro Definition Documentation

MOS_EMIT_PANIC_HOOK

#define MOS_EMIT_PANIC_HOOK	(		e,
			f,
			n )

Value:

MOS_PUT_IN_SECTION(".mos.panic_hooks", panic_hook_t, f##_hook, { .enabled = e, .hook = f, .name = n })

Definition at line 30 of file panic.hpp.

MOS_PANIC_HOOK_FEAT

#define MOS_PANIC_HOOK_FEAT	(		_feat,
			_f,
			_n )

Value:

MOS_EMIT_PANIC_HOOK(mos_debug_enabled_ptr(_feat), _f, _n)

Definition at line 32 of file panic.hpp.

MOS_PANIC_HOOK

#define MOS_PANIC_HOOK	(		_f,
			_name )

Value:

MOS_EMIT_PANIC_HOOK(NULL, _f, _name)

Definition at line 33 of file panic.hpp.

MOS_MAKE_PANIC_POINT

#define MOS_MAKE_PANIC_POINT	(		panic_instruction,
			file,
			func,
			line )

Value:

    __asm__ volatile("1: " panic_instruction "\n\t"                                                                                                                      \
                     ".pushsection .mos.panic_list,\"aw\"\n\t" MOS_PLATFORM_PANIC_POINT_ASM ".popsection\n\t"                                                            \
                     "\n\t"                                                                                                                                              \
                     :                                                                                                                                                   \
                     : "i"(file), "i"(func), "i"(line)                                                                                                                   \
                     : "memory")

Definition at line 43 of file panic.hpp.

mos_panic

#define mos_panic	(		fmt,
			... )

Value:

    do                                                                                                                                                                   \
    {                                                                                                                                                                    \
        pr_emerg(fmt, ##__VA_ARGS__);                                                                                                                                    \
        MOS_MAKE_PANIC_POINT(MOS_PLATFORM_PANIC_INSTR, __FILE__, __func__, __LINE__);                                                                                    \
        __builtin_unreachable();                                                                                                                                         \
    } while (0)

Definition at line 51 of file panic.hpp.

Referenced by __stack_chk_fail(), abort(), acpi_find_rsdp(), cpio_i_iterate_dir(), cpio_read_metadata(), dentry_check_refstat(), dentry_resolve_follow_symlink(), do_handle_sdt_header(), do_iterate_sdts(), extract_exact_range(), futex_wake(), hashmap_init(), initrd_read(), lapic_memory_setup(), limine_entry(), madt_parse_table(), IO::map(), mm_handle_fault(), mm_replace_page_locked(), mos_start_kernel(), mos_test_engine_run_tests(), IPC_ControlIO::on_closed(), NullIO::on_closed(), operator delete(), platform_startup_late(), Process::Process(), process_do_fork(), process_exit(), process_new(), register_sysfs_acpi_node(), register_sysfs_acpi_rsdp(), slab_allocate_mem(), stack_grow(), stack_pop(), stack_push(), test_engine_warning_handler(), tmpfs_create_inode(), vfs_register_filesystem(), x86_handle_exception(), and x86_handle_nmi().

mos_panic_inline

#define mos_panic_inline	(		fmt,
			... )

Value:

    do                                                                                                                                                                   \
    {                                                                                                                                                                    \
        pr_emerg(fmt, ##__VA_ARGS__);                                                                                                                                    \
        static const panic_point_t point = { .ip = 0, .file = __FILE__, .func = __func__, .line = __LINE__ };                                                            \
        handle_kernel_panic(&point);                                                                                                                                     \
    } while (0)

Definition at line 59 of file panic.hpp.

Referenced by mos::__raise_bad_ptrresult_value(), and mos::__raise_null_pointer_exception().

Typedef Documentation

kmsg_handler_t

typedef void kmsg_handler_t(const char *func, u32 line, const char *fmt, va_list args)

Definition at line 11 of file panic.hpp.

Function Documentation

MOS_STATIC_ASSERT()

MOS_STATIC_ASSERT	(	sizeof(panic_hook_t)	= =32,
		"panic_hook_t size mismatch"	)

kwarn_handler_set()

void kwarn_handler_set

(

kmsg_handler_t *

handler

)

Definition at line 37 of file panic.cpp.

Referenced by mos_test_engine_run_tests().

kwarn_handler_remove()

void kwarn_handler_remove

(

void

)

Definition at line 43 of file panic.cpp.

Referenced by mos_test_engine_run_tests().

mos_kwarn()

void mos_kwarn	(	const char *	func,
		u32	line,
		const char *	fmt,
			... )

Definition at line 164 of file panic.cpp.

try_handle_kernel_panics()

void try_handle_kernel_panics

(

ptr_t

ip

)

Definition at line 68 of file panic.cpp.

Referenced by riscv64_trap_handler(), and x86_handle_exception().

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handle_kernel_panic()

void handle_kernel_panic

(

const panic_point_t *

point

)

Definition at line 79 of file panic.cpp.

Referenced by try_handle_kernel_panics().

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