diff --git a/programs/develop/ktcc/trunk/bin/lib/crt0.o b/programs/develop/ktcc/trunk/bin/lib/crt0.o
index b857c8056..308ccd8bf 100644
Binary files a/programs/develop/ktcc/trunk/bin/lib/crt0.o and b/programs/develop/ktcc/trunk/bin/lib/crt0.o differ
diff --git a/programs/develop/ktcc/trunk/libc.obj/include/stdlib.h b/programs/develop/ktcc/trunk/libc.obj/include/stdlib.h
index c65fca478..dd9438e74 100644
--- a/programs/develop/ktcc/trunk/libc.obj/include/stdlib.h
+++ b/programs/develop/ktcc/trunk/libc.obj/include/stdlib.h
@@ -53,7 +53,10 @@ DLLAPI void free(void* ptr);
 DLLAPI long int strtol(const char* str, char** endptr, int base);
 
 DLLAPI void _exit(int status);
+
+#ifndef _Exit
 #define _Exit(status) _exit(status)
+#endif
 
 DLLAPI void abort();
 DLLAPI void exit(int status);
diff --git a/programs/develop/ktcc/trunk/libc.obj/lib/crt0.o b/programs/develop/ktcc/trunk/libc.obj/lib/crt0.o
deleted file mode 100644
index 598dbd5fc..000000000
Binary files a/programs/develop/ktcc/trunk/libc.obj/lib/crt0.o and /dev/null differ
diff --git a/programs/develop/ktcc/trunk/libc.obj/samples/assert_test.c b/programs/develop/ktcc/trunk/libc.obj/samples/assert_test.c
index 99f47d7e9..22ce303a8 100644
--- a/programs/develop/ktcc/trunk/libc.obj/samples/assert_test.c
+++ b/programs/develop/ktcc/trunk/libc.obj/samples/assert_test.c
@@ -7,4 +7,6 @@ int main()
 {
     assert(a != b);
     assert(a == b);
+    
+    return 0;
 }
\ No newline at end of file
diff --git a/programs/develop/ktcc/trunk/libc.obj/samples/atexit_test.c b/programs/develop/ktcc/trunk/libc.obj/samples/atexit_test.c
index 63f72bcf9..3bf8609d0 100644
--- a/programs/develop/ktcc/trunk/libc.obj/samples/atexit_test.c
+++ b/programs/develop/ktcc/trunk/libc.obj/samples/atexit_test.c
@@ -14,5 +14,5 @@ int main()
     atexit(&f);
     atexit(&f);
 
-    exit(0);
+    return 0;
 }
diff --git a/programs/develop/ktcc/trunk/libc.obj/samples/clayer/msgbox.c b/programs/develop/ktcc/trunk/libc.obj/samples/clayer/msgbox.c
index 0c8890cf8..1604cb05e 100644
--- a/programs/develop/ktcc/trunk/libc.obj/samples/clayer/msgbox.c
+++ b/programs/develop/ktcc/trunk/libc.obj/samples/clayer/msgbox.c
@@ -5,4 +5,6 @@ int main()
     msgbox* msg1 = NULL;
     msg1 = kolibri_new_msgbox("Title", "Text in window", 0, "Ok");
     kolibri_start_msgbox(msg1, NULL);
+    
+    return 0;
 }
diff --git a/programs/develop/ktcc/trunk/libc.obj/samples/consoleio.c b/programs/develop/ktcc/trunk/libc.obj/samples/consoleio.c
index 9be077b67..ae4cd88ad 100644
--- a/programs/develop/ktcc/trunk/libc.obj/samples/consoleio.c
+++ b/programs/develop/ktcc/trunk/libc.obj/samples/consoleio.c
@@ -18,4 +18,5 @@ int main()
     }
 
     (*con_exit)(0);
+    return 0;
 }
\ No newline at end of file
diff --git a/programs/develop/ktcc/trunk/libc.obj/samples/dir_example.c b/programs/develop/ktcc/trunk/libc.obj/samples/dir_example.c
index 3cbbd9aa4..6ade1e3af 100644
--- a/programs/develop/ktcc/trunk/libc.obj/samples/dir_example.c
+++ b/programs/develop/ktcc/trunk/libc.obj/samples/dir_example.c
@@ -41,4 +41,6 @@ int main()
     path = getcwd(NULL, PATH_MAX);
     printf("Move to the directory: %s\n", path);
     free(path);
+    
+    return 0;
 }
diff --git a/programs/develop/ktcc/trunk/libc.obj/samples/file_io.c b/programs/develop/ktcc/trunk/libc.obj/samples/file_io.c
index deaac4102..0a8622835 100644
--- a/programs/develop/ktcc/trunk/libc.obj/samples/file_io.c
+++ b/programs/develop/ktcc/trunk/libc.obj/samples/file_io.c
@@ -47,4 +47,5 @@ int main(int argc, char** argv)
         puts("TEST: FAIL!");
     }
     fclose(f);
+    return 0;
 }
diff --git a/programs/develop/ktcc/trunk/libc.obj/samples/http_tcp_demo.c b/programs/develop/ktcc/trunk/libc.obj/samples/http_tcp_demo.c
index 199033898..c4b218fad 100644
--- a/programs/develop/ktcc/trunk/libc.obj/samples/http_tcp_demo.c
+++ b/programs/develop/ktcc/trunk/libc.obj/samples/http_tcp_demo.c
@@ -55,5 +55,5 @@ int main()
 
     close(sock);
     puts("\n goodbye)\n");
-    exit(0);
+    return 0;
 }
diff --git a/programs/develop/ktcc/trunk/libc.obj/samples/libc_test.c b/programs/develop/ktcc/trunk/libc.obj/samples/libc_test.c
index 090305f19..49221c9f2 100644
--- a/programs/develop/ktcc/trunk/libc.obj/samples/libc_test.c
+++ b/programs/develop/ktcc/trunk/libc.obj/samples/libc_test.c
@@ -86,5 +86,5 @@ int main()
     printf(asctime(libc_tm));
 
     puts("End testing.");
-    exit(0);
+    return 0;
 }
diff --git a/programs/develop/ktcc/trunk/libc.obj/samples/math_test.c b/programs/develop/ktcc/trunk/libc.obj/samples/math_test.c
index 4dbdc9b89..91d975894 100644
--- a/programs/develop/ktcc/trunk/libc.obj/samples/math_test.c
+++ b/programs/develop/ktcc/trunk/libc.obj/samples/math_test.c
@@ -38,4 +38,5 @@ int main()
         result = frexp(param, &n);
         printf("%f = %f * 2^%d\n", param, result, n);
     }
+    return 0;
 }
diff --git a/programs/develop/ktcc/trunk/libc.obj/samples/pipe.c b/programs/develop/ktcc/trunk/libc.obj/samples/pipe.c
index 36da4e097..91634f3b7 100644
--- a/programs/develop/ktcc/trunk/libc.obj/samples/pipe.c
+++ b/programs/develop/ktcc/trunk/libc.obj/samples/pipe.c
@@ -42,7 +42,7 @@ void create_thread(void)
     printf("New thread created (TID=%u)\n", tid);
 }
 
-void main()
+int main()
 {
     if (_ksys_posix_pipe2(pipefd, 0)) {
         puts("Pipe creation error!");
@@ -51,4 +51,5 @@ void main()
     printf("SEND: %s\n", send_message);
     _ksys_posix_write(pipefd[1], send_message, MESSAGE_SIZE);
     create_thread();
+    return 0;
 }
diff --git a/programs/develop/ktcc/trunk/libc.obj/samples/shell_test.c b/programs/develop/ktcc/trunk/libc.obj/samples/shell_test.c
index 84bc4caac..ecce372d6 100644
--- a/programs/develop/ktcc/trunk/libc.obj/samples/shell_test.c
+++ b/programs/develop/ktcc/trunk/libc.obj/samples/shell_test.c
@@ -17,5 +17,6 @@ int main()
     string[0] = shell_getc();
     shell_printf("\n\rYou pressed: %c", string[0]);
     shell_exit();
+    
     return 0;
 }
\ No newline at end of file
diff --git a/programs/develop/ktcc/trunk/libc.obj/samples/string_test.c b/programs/develop/ktcc/trunk/libc.obj/samples/string_test.c
index 33cca8f18..064aedc8b 100644
--- a/programs/develop/ktcc/trunk/libc.obj/samples/string_test.c
+++ b/programs/develop/ktcc/trunk/libc.obj/samples/string_test.c
@@ -16,4 +16,5 @@ int main(int argc, char** argv)
         printf("memcpy: Failure\n");
         return -1;
     }
+    return 0;
 }
diff --git a/programs/develop/ktcc/trunk/libc.obj/samples/thread_work.c b/programs/develop/ktcc/trunk/libc.obj/samples/thread_work.c
index 48ce87d32..be6b9c4cc 100644
--- a/programs/develop/ktcc/trunk/libc.obj/samples/thread_work.c
+++ b/programs/develop/ktcc/trunk/libc.obj/samples/thread_work.c
@@ -69,4 +69,5 @@ int main()
             break;
         }
     }
+    return 0;
 }
diff --git a/programs/develop/ktcc/trunk/libc.obj/samples/tmpdisk_work.c b/programs/develop/ktcc/trunk/libc.obj/samples/tmpdisk_work.c
index 831df63d7..c8ad955a3 100644
--- a/programs/develop/ktcc/trunk/libc.obj/samples/tmpdisk_work.c
+++ b/programs/develop/ktcc/trunk/libc.obj/samples/tmpdisk_work.c
@@ -53,5 +53,6 @@ int main()
     } else {
         puts(tmpdisk_res_text[6]);
     }
-    exit(0);
+    
+    return 0;
 }
diff --git a/programs/develop/ktcc/trunk/libc.obj/samples/whois.c b/programs/develop/ktcc/trunk/libc.obj/samples/whois.c
index 477972826..ffaffae64 100644
--- a/programs/develop/ktcc/trunk/libc.obj/samples/whois.c
+++ b/programs/develop/ktcc/trunk/libc.obj/samples/whois.c
@@ -59,7 +59,7 @@ int main(int argc, char* argv[])
         (*con_set_title)("Whois");
     }
     get_whois_data(domain, &data);
-    exit(0);
+    return 0;
 }
 
 /*
diff --git a/programs/develop/ktcc/trunk/libc.obj/source/Tupfile.lua b/programs/develop/ktcc/trunk/libc.obj/source/Tupfile.lua
index ed6ab9561..7cd8a1435 100755
--- a/programs/develop/ktcc/trunk/libc.obj/source/Tupfile.lua
+++ b/programs/develop/ktcc/trunk/libc.obj/source/Tupfile.lua
@@ -1,4 +1,15 @@
-if tup.getconfig("NO_TCC") ~= "" then return end
+if tup.getconfig("NO_TCC") ~= "" then
+    return
+end
+
+function AddPrefix(prefix, t)
+    for i, v in pairs(t) do
+        t[i] = prefix .. v
+    end
+    return t
+end
+
+CC = "kos32-tcc"
 
 CFLAGS = " -r -nostdinc -nostdlib -DGNUC -D_BUILD_LIBC -Wall -Werror"
 INCLUDES = " -I../include"
@@ -29,14 +40,24 @@ GAS_SRC = {
     "math/sqrt.s",
     "math/tan.s",
     "string/memset.s",
-    "string/memmove.s"
+    "string/memmove.s",
 }
 
-OBJS = {"libc.c"}
+LIBC_OBJS = { "libc.c" }
 
-tup.append_table(OBJS,
-  tup.foreach_rule(GAS_SRC, "as --32 %f -o %o", "%B.o")
-)
+tup.append_table(LIBC_OBJS, tup.foreach_rule(GAS_SRC, "as --32 %f -o %o", "%B.o"))
 
-tup.rule(OBJS, "kos32-tcc" .. CFLAGS .. INCLUDES .. " %f -o %o " .. " && strip %o --strip-unneeded " , "libc.o")
+tup.rule(LIBC_OBJS, CC .. CFLAGS .. INCLUDES .. " %f -o %o " .. " && strip %o --strip-unneeded ", "libc.o")
 tup.rule("libc.o", "objconv -fcoff32 %f %o " .. tup.getconfig("KPACK_CMD"), "%B.obj")
+
+CRT0_ASM_SRC = AddPrefix("crt/", {
+    "crt0.asm",
+})
+CRT_C_SRC = AddPrefix("crt/", {
+    "crt_exit.c",
+})
+
+tup.rule(CRT0_ASM_SRC, "fasm %f %o", "%B.obj")
+tup.rule(CRT_C_SRC, CC .. " -c -nostdinc -nostdlib" .. " -I../include" .. " %f -o %o", "%B.o")
+
+tup.rule({ "crt0.obj", "crt_exit.o" }, "ld -r %f -o %o -m elf_i386", "crt0.o")
diff --git a/programs/develop/ktcc/trunk/libc.obj/source/crt/crt0.asm b/programs/develop/ktcc/trunk/libc.obj/source/crt/crt0.asm
index 596fba564..bbb494f1d 100644
--- a/programs/develop/ktcc/trunk/libc.obj/source/crt/crt0.asm
+++ b/programs/develop/ktcc/trunk/libc.obj/source/crt/crt0.asm
@@ -14,6 +14,7 @@ public start
 public start as '_start'
 
 extrn main
+extrn crt_exit
 
 include '../../../../../../proc32.inc'
 include '../../../../../../macros.inc'
@@ -38,36 +39,36 @@ start:
     call push_param
 ; retrieving parameters
     mov  esi, params
-    xor  edx, edx  ; dl - ��� ��������(1) ��� �����������(0)
-                   ; dh - ������ � �������� ������� �������� (1 �������, 0 ���������)
+    xor  edx, edx  ; dl - идёт параметр(1) или разделители(0)
+                   ; dh - символ с которого начался параметр (1 кавычки, 0 остальное)
     mov  ecx, 1    ; cl = 1
-                   ; ch = 0  ������ ����
+                   ; ch = 0  просто ноль
 .parse: 
     lodsb
     test al, al
     jz   .run
     test dl, dl
     jnz  .findendparam
-                     ;{���� ��� �����������
+                     ;{если был разделитель
     cmp  al, ' '
-    jz   .parse  ;�������� ������, ������ ��������� ������
-    mov  dl, cl  ;���������� ��������
+    jz   .parse  ;загружен пробел, грузим следующий символ
+    mov  dl, cl  ;начинается параметр
     cmp  al, '"'
-    jz   @f      ;��������� �������
-    mov  dh, ch     ;�������� ��� �������
+    jz   @f      ;загружены кавычки
+    mov  dh, ch     ;параметр без кавычек
     dec  esi
     call push_param
     inc  esi
     jmp  .parse
 
   @@:  
-    mov  dh, cl     ;�������� � ���������
-    call push_param ;���� �� ������ ������ ���������� ����� �� ��������
-    jmp  .parse     ;���� ��� �����������}
+    mov  dh, cl     ;параметр в кавычеках
+    call push_param ;если не пробел значит начинается какой то параметр
+    jmp  .parse     ;если был разделитель}
 
 .findendparam:
     test dh, dh
-    jz   @f ; ��� �������
+    jz   @f ; без кавычек
     cmp  al, '"'
     jz   .clear
     jmp  .parse
@@ -86,10 +87,9 @@ start:
     push [argc]
     call main
 .exit:
-    xor  eax,eax
-    dec  eax
-    int  0x40
-    dd   -1
+    push eax
+    call crt_exit
+    dd -1
 .crash:
     jmp  .exit
 ;============================
diff --git a/programs/develop/ktcc/trunk/libc.obj/source/crt/crt_exit.c b/programs/develop/ktcc/trunk/libc.obj/source/crt/crt_exit.c
new file mode 100644
index 000000000..f7888f2f2
--- /dev/null
+++ b/programs/develop/ktcc/trunk/libc.obj/source/crt/crt_exit.c
@@ -0,0 +1,6 @@
+#include <stdlib.h>
+
+void crt_exit(int status)
+{
+    exit(status);
+}
diff --git a/programs/develop/ktcc/trunk/libc.obj/source/stdlib/_exit.c b/programs/develop/ktcc/trunk/libc.obj/source/stdlib/_exit.c
index 5ec2e14f6..5c9fc2439 100644
--- a/programs/develop/ktcc/trunk/libc.obj/source/stdlib/_exit.c
+++ b/programs/develop/ktcc/trunk/libc.obj/source/stdlib/_exit.c
@@ -4,13 +4,13 @@
 
 void _exit(int status)
 {
-    if(status && status != 128)
+    if(status && status != 128) // return error and this is not abort
     {
-        printf("exit code: %d", status);
+        printf("exit code: %d\n", status);
     }
     
     if (__con_is_load) {
-        con_exit(status);
+        con_exit(0);    // пусть удерживается, так даже лучше, можно вывод упесть проанализировать
     }
     _ksys_exit();
 }
diff --git a/programs/develop/ktcc/trunk/libc.obj/source/stdlib/exit.c b/programs/develop/ktcc/trunk/libc.obj/source/stdlib/exit.c
index 116dd8131..b1f5542a8 100644
--- a/programs/develop/ktcc/trunk/libc.obj/source/stdlib/exit.c
+++ b/programs/develop/ktcc/trunk/libc.obj/source/stdlib/exit.c
@@ -1,12 +1,40 @@
 /* Copyright (C) 2021 Logaev Maxim (turbocat2001), GPLv2 */
 
+#include <stdlib.h>
 #include <sys/ksys.h>
+#include "_mem.h"
+
+static void __close_all()
+{
+
+}
+
+static void __delete_all_tmp()
+{
+
+}
+
+static void __free_all_mem()
+{
+    struct mem_node* current_node = __mem_node;
+
+    while (current_node != NULL)
+    {
+        struct mem_node* tmp = current_node;
+        current_node = current_node->next;
+
+        free(GET_MEM_NODE_PTR(tmp));
+    }
+}
 
 void exit(int status)
 {
+    _ksys_debug_puts("exit\n");
     __run_atexit();
-
-    // fflush & delete tmp files
+    __close_all();
+    __delete_all_tmp();
+    __free_all_mem();
+    
 
     _exit(status);
 }
diff --git a/programs/develop/ktcc/trunk/libc.obj/source/stdlib/free.c b/programs/develop/ktcc/trunk/libc.obj/source/stdlib/free.c
index f792b30d8..5b8509569 100644
--- a/programs/develop/ktcc/trunk/libc.obj/source/stdlib/free.c
+++ b/programs/develop/ktcc/trunk/libc.obj/source/stdlib/free.c
@@ -70,3 +70,5 @@ void free(void* ptr)
         }
     }
 }
+
+#undef CHECK_SIDE_IN_OTHER_BLOCK