diff --git a/src/Makefile b/src/Makefile
index d7564e5..ed49762 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -20,7 +20,14 @@ CPPFLAGS =        \
 	$(MRUBY_FLAGS)  \
 	-DKERNAUX_DEBUG \
 
-OBJS = multiboot2.c.o start.S.o main.c.o libc.c.o logger.c.o panic.c.o
+OBJS =            \
+	libc.c.o        \
+	logger.c.o      \
+	main.c.o        \
+	multiboot2.c.o  \
+	panic.c.o       \
+	stack_trace.c.o \
+	start.S.o
 
 all: $(MRUBYVISOR)
 
diff --git a/src/main.c b/src/main.c
index 2b1db4a..38b0c5d 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,6 +1,7 @@
 #include "libc.h"
 #include "logger.h"
 #include "panic.h"
+#include "stack_trace.h"
 
 #include <stdbool.h>
 #include <stddef.h>
@@ -17,7 +18,6 @@
 static mrb_state *mrb = NULL;
 static mrbc_context *context = NULL;
 
-static void load_elf_symbols(const struct KernAux_Multiboot2_Info *multiboot2_info);
 static bool load_module(const char *source, size_t size, const char *cmdline);
 
 static mrb_value ruby_console_puts(mrb_state *mrb, mrb_value self);
@@ -32,7 +32,7 @@ void main(
     ASSERT(multiboot2_info_magic == KERNAUX_MULTIBOOT2_INFO_MAGIC);
     ASSERT(KernAux_Multiboot2_Info_is_valid(multiboot2_info));
 
-    load_elf_symbols(multiboot2_info);
+    stack_trace_init(multiboot2_info);
 
     ASSERT(mrb = mrb_open());
     ASSERT(context = mrbc_context_new(mrb));
@@ -71,101 +71,6 @@ void main(
     }
 }
 
-#include <kernaux/macro/packing_start.run>
-
-struct SectionEntry {
-    uint32_t name;
-    uint32_t type;
-    uint32_t flags;
-    uint32_t vaddr;
-    uint32_t file_offset;
-    uint32_t file_size;
-    uint32_t link;
-    uint32_t info;
-    uint32_t alignment;
-    uint32_t ent_size;
-}
-KERNAUX_PACKED;
-
-#include <kernaux/macro/packing_end.run>
-
-void load_elf_symbols(
-    const struct KernAux_Multiboot2_Info *const multiboot2_info
-) {
-    const struct KernAux_Multiboot2_ITag_ELFSymbols *const elf_symbols_tag =
-        (const struct KernAux_Multiboot2_ITag_ELFSymbols*)
-        KernAux_Multiboot2_Info_first_tag_with_type(
-            multiboot2_info,
-            KERNAUX_MULTIBOOT2_ITAG_ELF_SYMBOLS
-        );
-
-    if (!elf_symbols_tag) {
-        kernaux_drivers_console_puts("ELF symbols tag not found");
-        return;
-    }
-
-    const struct SectionEntry *const section_headers =
-        // FIXME: GRUB 2 doesn't conform the spec!
-        // https://www.mail-archive.com/grub-devel@gnu.org/msg30790.html
-        // (const struct SectionEntry*)KERNAUX_MULTIBOOT2_DATA(elf_symbols_tag);
-        (const struct SectionEntry*)(&((uint8_t*)elf_symbols_tag)[20]);
-
-    kernaux_drivers_console_puts("ELF symbols tag:");
-    KernAux_Multiboot2_ITag_ELFSymbols_print(
-        elf_symbols_tag,
-        kernaux_drivers_console_printf
-    );
-    kernaux_drivers_console_printf("  data: 0x%p\n", (void*)section_headers);
-    kernaux_drivers_console_putc('\n');
-
-    const struct SectionEntry *const shstrtab =
-        // FIXME: GRUB 2 doesn't conform the spec!
-        // https://www.mail-archive.com/grub-devel@gnu.org/msg30790.html
-        // &section_headers[elf_symbols_tag->shndx];
-        &section_headers[(uint32_t)(((uint8_t*)elf_symbols_tag)[16])];
-
-    if (shstrtab == section_headers) return;
-
-    size_t debug_info_index   = 0;
-    size_t debug_abbrev_index = 0;
-    size_t debug_str_index    = 0;
-
-    for (size_t index = 0; index < elf_symbols_tag->num; ++index) {
-        const struct SectionEntry *const section_header =
-            &section_headers[index];
-
-        const char *const section_name =
-            &((const char*)shstrtab->vaddr)[section_header->name];
-
-        kernaux_drivers_console_printf("section %lu: %s\n",
-                                       index, section_name);
-
-        if (strcmp(section_name, ".debug_info") == 0) {
-            debug_info_index = index;
-        } else if (strcmp(section_name, ".debug_abbrev") == 0) {
-            debug_abbrev_index = index;
-        } else if (strcmp(section_name, ".debug_str") == 0) {
-            debug_str_index = index;
-        }
-    }
-
-    kernaux_drivers_console_putc('\n');
-
-    kernaux_drivers_console_printf(".debug_info:   %lu\n", debug_info_index);
-    kernaux_drivers_console_printf(".debug_abbrev: %lu\n", debug_abbrev_index);
-    kernaux_drivers_console_printf(".debug_str:    %lu\n", debug_str_index);
-    kernaux_drivers_console_putc('\n');
-
-    if (!debug_info_index || !debug_abbrev_index || !debug_str_index) return;
-
-    const struct SectionEntry *const debug_info =
-        &section_headers[debug_info_index];
-    const struct SectionEntry *const debug_abbrev =
-        &section_headers[debug_abbrev_index];
-    const struct SectionEntry *const debug_str =
-        &section_headers[debug_str_index];
-}
-
 bool load_module(
     const char *const source,
     const size_t size,
diff --git a/src/stack_trace.c b/src/stack_trace.c
new file mode 100644
index 0000000..a67f9db
--- /dev/null
+++ b/src/stack_trace.c
@@ -0,0 +1,102 @@
+#include "stack_trace.h"
+
+#include <string.h>
+
+#include <kernaux/drivers/console.h>
+#include <kernaux/multiboot2.h>
+
+#include <kernaux/macro/packing_start.run>
+
+struct SectionEntry {
+    uint32_t name;
+    uint32_t type;
+    uint32_t flags;
+    uint32_t vaddr;
+    uint32_t file_offset;
+    uint32_t file_size;
+    uint32_t link;
+    uint32_t info;
+    uint32_t alignment;
+    uint32_t ent_size;
+}
+KERNAUX_PACKED;
+
+#include <kernaux/macro/packing_end.run>
+
+void stack_trace_init(
+    const struct KernAux_Multiboot2_Info *const multiboot2_info
+) {
+    const struct KernAux_Multiboot2_ITag_ELFSymbols *const elf_symbols_tag =
+        (const struct KernAux_Multiboot2_ITag_ELFSymbols*)
+        KernAux_Multiboot2_Info_first_tag_with_type(
+            multiboot2_info,
+            KERNAUX_MULTIBOOT2_ITAG_ELF_SYMBOLS
+        );
+
+    if (!elf_symbols_tag) {
+        kernaux_drivers_console_puts("ELF symbols tag not found");
+        return;
+    }
+
+    const struct SectionEntry *const section_headers =
+        // FIXME: GRUB 2 doesn't conform the spec!
+        // https://www.mail-archive.com/grub-devel@gnu.org/msg30790.html
+        // (const struct SectionEntry*)KERNAUX_MULTIBOOT2_DATA(elf_symbols_tag);
+        (const struct SectionEntry*)(&((uint8_t*)elf_symbols_tag)[20]);
+
+    kernaux_drivers_console_puts("ELF symbols tag:");
+    KernAux_Multiboot2_ITag_ELFSymbols_print(
+        elf_symbols_tag,
+        kernaux_drivers_console_printf
+    );
+    kernaux_drivers_console_printf("  data: 0x%p\n", (void*)section_headers);
+    kernaux_drivers_console_putc('\n');
+
+    const struct SectionEntry *const shstrtab =
+        // FIXME: GRUB 2 doesn't conform the spec!
+        // https://www.mail-archive.com/grub-devel@gnu.org/msg30790.html
+        // &section_headers[elf_symbols_tag->shndx];
+        &section_headers[(uint32_t)(((uint8_t*)elf_symbols_tag)[16])];
+
+    if (shstrtab == section_headers) return;
+
+    size_t debug_info_index   = 0;
+    size_t debug_abbrev_index = 0;
+    size_t debug_str_index    = 0;
+
+    for (size_t index = 0; index < elf_symbols_tag->num; ++index) {
+        const struct SectionEntry *const section_header =
+            &section_headers[index];
+
+        const char *const section_name =
+            &((const char*)shstrtab->vaddr)[section_header->name];
+
+        kernaux_drivers_console_printf("section %lu: %s\n",
+                                       index, section_name);
+
+        if (strcmp(section_name, ".debug_info") == 0) {
+            debug_info_index = index;
+        } else if (strcmp(section_name, ".debug_abbrev") == 0) {
+            debug_abbrev_index = index;
+        } else if (strcmp(section_name, ".debug_str") == 0) {
+            debug_str_index = index;
+        }
+    }
+
+    kernaux_drivers_console_putc('\n');
+
+    kernaux_drivers_console_printf(".debug_info:   %lu\n", debug_info_index);
+    kernaux_drivers_console_printf(".debug_abbrev: %lu\n", debug_abbrev_index);
+    kernaux_drivers_console_printf(".debug_str:    %lu\n", debug_str_index);
+    kernaux_drivers_console_putc('\n');
+
+    if (!debug_info_index || !debug_abbrev_index || !debug_str_index) return;
+/*
+    const struct SectionEntry *const debug_info =
+        &section_headers[debug_info_index];
+    const struct SectionEntry *const debug_abbrev =
+        &section_headers[debug_abbrev_index];
+    const struct SectionEntry *const debug_str =
+        &section_headers[debug_str_index];
+*/
+}
diff --git a/src/stack_trace.h b/src/stack_trace.h
new file mode 100644
index 0000000..87c17bb
--- /dev/null
+++ b/src/stack_trace.h
@@ -0,0 +1,8 @@
+#ifndef INCLUDED_STACK_TRACE
+#define INCLUDED_STACK_TRACE
+
+#include <kernaux/multiboot2.h>
+
+void stack_trace_init(const struct KernAux_Multiboot2_Info *multiboot2_info);
+
+#endif