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Index > Compiler Internals > bug in Fresh/fasm (fasm17324 on same sources - same bug)

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ProMiNick



Joined: 24 Mar 2012
Posts: 574
Location: Russian Federation, Sochi
ProMiNick
context of problem

fresh example of linux GUI via Xserver:
Code:
proc start, .argc, .argv, .argp
.fontlist  dd ?
.fontcount dd ?
begin
        stdcall Xinitialize, strCaption, 10, 20, 400, 200

        ;;; Main Event Loop

.msg_pump:
        cinvoke XNextEvent, [hdisplay], event
        stdcall Xeventhandler
        jmp     .msg_pump

        stdcall Xshutdown

.do_exit:        ; Non-Local for XSetErrorHandler
        xor     eax, eax
        cinvoke exit, eax
        return
endp




proc Xshutdown
begin
        cinvoke XFreeGC, [hdisplay], [hGC]
        cinvoke XDestroyWindow, [hwin], [hdisplay]
        cinvoke XSetErrorHandler, [oError]

        xor     eax, eax
        return
endp


proc Xinitialize, .txt, .x, .y, .w, .h
  .hscreen rd 1
  .hroot   rd 1
begin
        cinvoke XOpenDisplay, 0
        or      eax, eax
        jnz     .display_ok

        cinvoke puts, strErrorDisplay
        jmp     start.do_exit

.display_ok:
        mov     [hdisplay], eax
        cinvoke XDefaultScreen, eax
        mov     [.hscreen], eax

        cinvoke XDefaultRootWindow, [hdisplay]
        mov     [.hroot], eax

        cinvoke XCreateSimpleWindow, [hdisplay], eax, [.x], [.y], [.w], [.h], 0, $000000, $d4d0c8
        or      eax, eax
        jnz     .create_ok

        cinvoke puts, strErrorCreation
        jmp     start.do_exit

.create_ok:
        mov     [hwin], eax
        cinvoke XCreateSimpleWindow, [hdisplay], eax, 10, 10, 64, 24, 0, 606060, $d4d0c8
        mov     [hwin2], eax

        cinvoke XSelectInput, [hdisplay], [hwin], KeyPressMask + KeyReleaseMask + ExposureMask
        cinvoke XSelectInput, [hdisplay], [hwin2], KeyPressMask + KeyReleaseMask + ExposureMask + EnterWindowMask + LeaveWindowMask
        cinvoke XStoreName, [hdisplay], [hwin], [.txt]
        cinvoke XStoreName, [hdisplay], [hwin2], cBtnCaption
        cinvoke XMapRaised, [hdisplay], [hwin]
        cinvoke XMapRaised, [hdisplay], [hwin2]
        or      eax, eax
        jnz     .show_ok

        cinvoke puts, strErrorShow
        jmp     start.do_exit

.show_ok:
        cinvoke XCreateGC, [hdisplay], [hwin], 0, 0
        mov     [hGC], eax

        cinvoke XSetForeground, [hdisplay], [hGC], $000000
        cinvoke XSetBackground, [hdisplay], [hGC], $ffffff

        xor     eax, eax
        return
endp



proc Xdrawscreen
begin
        cinvoke XDrawLine, [hdisplay], [hwin], [hGC], 0, 110, 400, 110
        cinvoke XDrawLine, [hdisplay], [hwin], [hGC], 0, 80, 400, 80
        cinvoke XDrawString, [hdisplay], [hwin], [hGC], 10, 100, strMessage, lenMessage
        return
endp


proc StrLength, .ptrString
begin
        push    esi

        xor     eax, eax

        mov     esi, [.ptrString]
        test    esi, esi
        jz      .exit

        cld
.loop:
        mov     cl, [esi]
        inc     esi
        test    cl, cl
        jz      .exit

        inc     eax
        jmp     .loop

.exit:
        pop     esi
        return
endp

proc DrawBtn, .hwin, .inside
.attr XWindowAttributes
.name dd ?
.font dd ?
.direction dd ?
.ascent    dd ?
.descent   dd ?
.overall   XCharStruct

.Gcontext dd ?
begin
        push    ebx ecx esi edi

        lea     ecx, [.attr]
        cinvoke XGetWindowAttributes, [hdisplay], [.hwin], ecx
        dec     [.attr.width]
        dec     [.attr.height]

        cinvoke XCreateGC, [hdisplay], [.hwin], 0, 0
        mov     ebx, eax

        cinvoke XGContextFromGC, ebx
        mov     [.Gcontext], eax

        cmp     [.inside], 0
        jne     .border_beveled

        cinvoke XSetForeground, [hdisplay], ebx, $606060
        cinvoke XDrawRectangle, [hdisplay], [.hwin], ebx, 0, 0, [.attr.width], [.attr.height]

        sub     [.attr.width], 2
        sub     [.attr.height], 2

        cinvoke XSetForeground, [hdisplay], ebx, $d4d0c8
        cinvoke XDrawRectangle, [hdisplay], [.hwin], ebx, 1, 1, [.attr.width], [.attr.height]
        inc     [.attr.width]
        inc     [.attr.height]
        jmp     .border_ok

.border_beveled:
        cinvoke XSetForeground, [hdisplay], ebx, $ffffff
        cinvoke XDrawLine, [hdisplay], [.hwin], ebx, 0, 0, [.attr.width], 0
        cinvoke XDrawLine, [hdisplay], [.hwin], ebx, 0, 0, 0, [.attr.height]

        cinvoke XSetForeground, [hdisplay], ebx, $404040
        cinvoke XDrawLine, [hdisplay], [.hwin], ebx, 0, [.attr.height], [.attr.width], [.attr.height]
        cinvoke XDrawLine, [hdisplay], [.hwin], ebx, [.attr.width], 0, [.attr.width], [.attr.height]

        dec     [.attr.width]
        dec     [.attr.height]

        cinvoke XSetForeground, [hdisplay], ebx, $808080
        cinvoke XDrawLine, [hdisplay], [.hwin], ebx, 1, [.attr.height], [.attr.width], [.attr.height]
        cinvoke XDrawLine, [hdisplay], [.hwin], ebx, [.attr.width], 1, [.attr.width], [.attr.height]

.border_ok:
        cinvoke XSetForeground, [hdisplay], ebx, $000000

        lea     ecx, [.name]
        cinvoke XFetchName, [hdisplay], [.hwin], ecx

        stdcall StrLength, [.name]
        mov     edi, eax
        lea     ecx, [.direction]
        lea     edx, [.ascent]
        lea     eax, [.descent]
        lea     esi, [.overall]

        cinvoke XQueryTextExtents, [hdisplay], [.Gcontext], [.name], edi, ecx, edx, eax, esi

        xor     eax, eax
        mov     ax, [.overall.ascent]
        add     ax, [.overall.descent]
        movsx   eax, ax
        sub     eax, [.attr.height]
        add     eax, 1
        neg     eax
        sar     eax, 1
        movsx   ecx, [.overall.ascent]
        lea     eax, [eax+ecx+1]  ; this is the baseline.
        mov     [.attr.y], eax

        mov     ax, [.overall.width]
        movsx   eax, ax
        sub     eax, [.attr.width]
        add     eax, 1
        neg     eax
        sar     eax, 1
        add     eax, 1
        cmp     eax, 1
        jge     @f
        mov     eax, 1
@@:
        mov     [.attr.x], eax

        stdcall StrLength, [.name]
        cinvoke XDrawString, [hdisplay], [.hwin], ebx, [.attr.x], [.attr.y], [.name], eax

        cinvoke XFree, [.name]
        cinvoke XFreeGC, [hdisplay], ebx

.finish:
        pop   edi esi ecx  ebx
        return
endp



proc Xeventhandler
begin
        mov     eax, [event]

        cmp     eax, Expose
        je      .on_expose

        cmp     eax, KeyPress
        je      .on_keypress

        cmp     eax, EnterNotify
        je      .on_enter

        cmp     eax, LeaveNotify
        je      .on_leave

        return

.on_leave:
        mov     eax, [event+XEnterWindowEvent.window]
        cmp     eax, [hwin2]
        je      .button_leave

        return

.button_leave:
        stdcall DrawBtn, [event+XEnterWindowEvent.window], 0
        return


.on_enter:
        mov     eax, [event+XEnterWindowEvent.window]
        cmp     eax, [hwin2]
        je      .button_enter
        return

.button_enter:
        stdcall DrawBtn, [event+XEnterWindowEvent.window], 1
        return

.on_expose:
        cmp     [event+XExposeEvent.count], 0
        je      @f

        return
@@:
        mov     eax, [event+XExposeEvent.window]

        cmp     eax, [hwin]
        je      .mainwin

        cmp     eax, [hwin2]
        je      .button

        return

.button:
        stdcall DrawBtn, [hwin2], 0
        return


.mainwin:
        stdcall Xdrawscreen
        return


.on_keypress:
        cinvoke XLookupKeysym, event, 0
        cmp     eax, 'q'
        je      .terminate

        return

.terminate:
; keypress exits the application
        jmp     start.do_exit
endp






iglobal
  strCaption db 'Xlib Fresh!', 0
  strMessage db "This is native assembly language Linux program."
  lenMessage = ($-strMessage)

  cBtnCaption db 'Button',0

  oError           dd 0
  strErrorDisplay  db 'XOpenDisplay: could not open connection to X server.', 0
  strErrorCreation db 'XCreateSimpleWindow: could not create window.', 0
  strErrorShow     db 'XMapRaised: could not display window.', 0

  cNewLine      db $0a, 0

  hGC             dd 0
  hwin            dd 0
  hwin2           dd 0
  hdisplay        dd 0
  event           rd 132
endg
    


disasm listing:
Code:
seg000:00000000 ;
seg000:00000000 ; +-------------------------------------------------------------------------+
seg000:00000000 ; |   This file has been generated by The Interactive Disassembler (IDA)    |
seg000:00000000 ; |           Copyright (c) 2015 Hex-Rays, <support@hex-rays.com>           |
seg000:00000000 ; |                      License info: 48-3255-7514-28                      |
seg000:00000000 ; |                         Giancarlo Russo, HT Srl                         |
seg000:00000000
seg000:00000000                 .686p
seg000:00000000                 .mmx
seg000:00000000                 .model flat
seg000:00000000 .intel_syntax noprefix
seg000:00000000
seg000:00000000 ; ===========================================================================
seg000:00000000
seg000:00000000 ; Segment type: Regular
seg000:00000000 seg000          segment byte public '' use32
seg000:00000000                 assume cs:seg000
seg000:00000000                 assume es:nothing, ss:nothing, ds:nothing, fs:nothing, gs:nothing
seg000:00000000 stru_0          db 7Fh, 45h, 4Ch, 46h, 3 dup(1), 3, 8 dup(0); e_ident
seg000:00000000                 dw ET_EXEC              ; e_type
seg000:00000000                 dw EM_386               ; e_machine
seg000:00000000                 dd EV_CURRENT           ; e_version
seg000:00000000                 dd offset start         ; e_entry
seg000:00000000                 dd offset ProgramHeader ; e_phoff
seg000:00000000                 dd 0                    ; e_shoff
seg000:00000000                 dd 0                    ; e_flags
seg000:00000000                 db 34h, 0
seg000:00000000                 dw size Elf32_Phdr      ; e_phentsize
seg000:00000000                 dw 5                    ; e_phnum
seg000:00000000                 dw size Elf32_Shdr      ; e_shentsize
seg000:00000000                 dw 0                    ; e_shnum
seg000:00000000                 dw 0                    ; e_shstrndx
seg000:00000034 ProgramHeader   Elf32_Phdr <PT_LOAD, 0D4h, offset start, offset start, 605h, 605h, \
seg000:00000034                                         ; DATA XREF: seg000:stru_0o
seg000:00000034                             PF_X or PF_R, 1000h>; 0 ; "Xlib Fresh!"
seg000:00000034                 Elf32_Phdr <PT_LOAD, 6D9h, offset _title, offset _title, 0E1h, 2F1h, \
seg000:00000034                             PF_W or PF_R, 1000h>; 1
seg000:00000034                 Elf32_Phdr <PT_INTERP, 7BAh, offset aLibLdLinux_so_, \
seg000:00000034                             offset aLibLdLinux_so_, 13h, 13h, PF_R, 1>; 2
seg000:00000034                 Elf32_Phdr <PT_DYNAMIC, 7CDh, offset _DYNAMIC, offset _DYNAMIC, 58h, \
seg000:00000034                             58h, PF_R, 1>; 3
seg000:00000034                 Elf32_Phdr <PT_LOAD, 825h, offset _SYMTAB, offset _SYMTAB, 49Dh, 49Dh,\
seg000:00000034                             PF_W or PF_R, 1000h>; 4
seg000:00000034 seg000          ends
seg000:00000034
.text:080480D4 ; ===========================================================================
.text:080480D4
.text:080480D4 ; Segment type: Pure code
.text:080480D4 _text           segment byte public 'CODE' use32
.text:080480D4                 assume cs:_text
.text:080480D4                 ;org 80480D4h
.text:080480D4                 assume es:nothing, ss:nothing, ds:nothing, fs:nothing, gs:nothing
.text:080480D4
.text:080480D4 ; =============== S U B R O U T I N E =======================================
.text:080480D4
.text:080480D4 ; Attributes: noreturn bp-based frame
.text:080480D4
.text:080480D4 start           proc near               ; DATA XREF: seg000:ProgramHeadero
.text:080480D4                 enter   8, 0
.text:080480D8                 push    200
.text:080480DD                 push    400
.text:080480E2                 push    20
.text:080480E4                 push    10
.text:080480E6                 push    offset _title   ; "Xlib Fresh!"
.text:080480EB                 call    Xinitialize
.text:080480F0
.text:080480F0 msg_loop:                               ; CODE XREF: start+35j
.text:080480F0                 push    80497BAh
.text:080480F5                 push    ds:dword_80497B6
.text:080480FB                 call    ds:dword_804AC9A
.text:08048101                 add     esp, 8
.text:08048104                 call    sub_8048638
.text:08048109                 jmp     short msg_loop
.text:08048109 start           endp
.text:08048109
.text:0804810B ; ---------------------------------------------------------------------------
.text:0804810B                 call    sub_8048120
.text:08048110 ; START OF FUNCTION CHUNK FOR Xinitialize
.text:08048110
.text:08048110 loc_8048110:                            ; CODE XREF: Xinitialize+21j
.text:08048110                                         ; Xinitialize+7Ej ...
.text:08048110                 xor     eax, eax
.text:08048112                 push    eax
.text:08048113                 call    ds:dword_804ACBE
.text:08048119                 add     esp, 4
.text:0804811C                 leave
.text:0804811D                 retn    0Ch
.text:0804811D ; END OF FUNCTION CHUNK FOR Xinitialize
.text:08048120
.text:08048120 ; =============== S U B R O U T I N E =======================================
.text:08048120
.text:08048120
.text:08048120 sub_8048120     proc near               ; CODE XREF: .text:0804810Bp
.text:08048120                 push    ds:dword_80497AA
.text:08048126                 push    ds:dword_80497B6
.text:0804812C                 call    ds:dword_804AC86
.text:08048132                 add     esp, 8
.text:08048135                 push    ds:dword_80497B6
.text:0804813B                 push    ds:dword_80497AE
.text:08048141                 call    ds:dword_804AC6E
.text:08048147                 add     esp, 8
.text:0804814A                 push    ds:dword_804971B
.text:08048150                 call    ds:dword_804ACAE
.text:08048156                 add     esp, 4
.text:08048159                 xor     eax, eax
.text:0804815B                 retn
.text:0804815B sub_8048120     endp
.text:0804815B
.text:0804815C
.text:0804815C ; =============== S U B R O U T I N E =======================================
.text:0804815C
.text:0804815C ; Attributes: bp-based frame
.text:0804815C
.text:0804815C Xinitialize     proc near               ; CODE XREF: start+17p
.text:0804815C
.text:0804815C var_8           = dword ptr -8
.text:0804815C var_4           = dword ptr -4
.text:0804815C arg_0           = dword ptr  8
.text:0804815C arg_4           = dword ptr  0Ch
.text:0804815C arg_8           = dword ptr  10h
.text:0804815C arg_C           = dword ptr  14h
.text:0804815C arg_10          = dword ptr  18h
.text:0804815C
.text:0804815C ; FUNCTION CHUNK AT .text:08048110 SIZE 00000010 BYTES
.text:0804815C
.text:0804815C                 enter   8, 0
.text:08048160                 push    0
.text:08048162                 call    ds:dword_804AC9E
.text:08048168                 add     esp, 4
.text:0804816B                 or      eax, eax
.text:0804816D                 jnz     short loc_804817F
.text:0804816F                 push    804971Fh
.text:08048174                 call    ds:dword_804ACBA
.text:0804817A                 add     esp, 4
.text:0804817D                 jmp     short loc_8048110
.text:0804817F ; ---------------------------------------------------------------------------
.text:0804817F
.text:0804817F loc_804817F:                            ; CODE XREF: Xinitialize+11j
.text:0804817F                 mov     ds:dword_80497B6, eax
.text:08048184                 push    eax
.text:08048185                 call    ds:dword_804AC6A
.text:0804818B                 add     esp, 4
.text:0804818E                 mov     [ebp+var_8], eax
.text:08048191                 push    ds:dword_80497B6
.text:08048197                 call    ds:dword_804AC66
.text:0804819D                 add     esp, 4
.text:080481A0                 mov     [ebp+var_4], eax
.text:080481A3                 push    0D4D0C8h
.text:080481A8                 push    0
.text:080481AA                 push    0
.text:080481AC                 push    [ebp+arg_10]
.text:080481AF                 push    [ebp+arg_C]
.text:080481B2                 push    [ebp+arg_8]
.text:080481B5                 push    [ebp+arg_4]
.text:080481B8                 push    eax
.text:080481B9                 push    ds:dword_80497B6
.text:080481BF                 call    ds:dword_804AC62
.text:080481C5                 add     esp, 24h
.text:080481C8                 or      eax, eax
.text:080481CA                 jnz     short loc_80481DF
.text:080481CC                 push    8049754h
.text:080481D1                 call    ds:dword_804ACBA
.text:080481D7                 add     esp, 4
.text:080481DA                 jmp     loc_8048110
.text:080481DF ; ---------------------------------------------------------------------------
.text:080481DF
.text:080481DF loc_80481DF:                            ; CODE XREF: Xinitialize+6Ej
.text:080481DF                 mov     ds:dword_80497AE, eax
.text:080481E4                 push    0D4D0C8h
.text:080481E9                 push    93F6Ch
.text:080481EE                 push    0
.text:080481F0                 push    18h
.text:080481F2                 push    40h ; '@'
.text:080481F4                 push    0Ah
.text:080481F6                 push    0Ah
.text:080481F8                 push    eax
.text:080481F9                 push    ds:dword_80497B6
.text:080481FF                 call    ds:dword_804AC62
.text:08048205                 add     esp, 24h
.text:08048208                 mov     ds:dword_80497B2, eax
.text:0804820D                 push    8003h
.text:08048212                 push    ds:dword_80497AE
.text:08048218                 push    ds:dword_80497B6
.text:0804821E                 call    ds:dword_804ACA6
.text:08048224                 add     esp, 0Ch
.text:08048227                 push    8033h
.text:0804822C                 push    ds:dword_80497B2
.text:08048232                 push    ds:dword_80497B6
.text:08048238                 call    ds:dword_804ACA6
.text:0804823E                 add     esp, 0Ch
.text:08048241                 push    [ebp+arg_0]
.text:08048244                 push    ds:dword_80497AE
.text:0804824A                 push    ds:dword_80497B6
.text:08048250                 call    ds:dword_804ACB6
.text:08048256                 add     esp, 0Ch
.text:08048259                 push    8049714h
.text:0804825E                 push    ds:dword_80497B2
.text:08048264                 push    ds:dword_80497B6
.text:0804826A                 call    ds:dword_804ACB6
.text:08048270                 add     esp, 0Ch
.text:08048273                 push    ds:dword_80497AE
.text:08048279                 push    ds:dword_80497B6
.text:0804827F                 call    ds:dword_804AC96
.text:08048285                 add     esp, 8
.text:08048288                 push    ds:dword_80497B2
.text:0804828E                 push    ds:dword_80497B6
.text:08048294                 call    ds:dword_804AC96
.text:0804829A                 add     esp, 8
.text:0804829D                 or      eax, eax
.text:0804829F                 jnz     short loc_80482B4
.text:080482A1                 push    8049782h
.text:080482A6                 call    ds:dword_804ACBA
.text:080482AC                 add     esp, 4
.text:080482AF                 jmp     loc_8048110
.text:080482B4 ; ---------------------------------------------------------------------------
.text:080482B4
.text:080482B4 loc_80482B4:                            ; CODE XREF: Xinitialize+143j
.text:080482B4                 push    0
.text:080482B6                 push    0
.text:080482B8                 push    ds:dword_80497AE
.text:080482BE                 push    ds:dword_80497B6
.text:080482C4                 call    ds:dword_804AC5E
.text:080482CA                 add     esp, 10h
.text:080482CD                 mov     ds:dword_80497AA, eax
.text:080482D2                 push    0
.text:080482D4                 push    ds:dword_80497AA
.text:080482DA                 push    ds:dword_80497B6
.text:080482E0                 call    ds:dword_804ACB2
.text:080482E6                 add     esp, 0Ch
.text:080482E9                 push    0FFFFFFh
.text:080482EE                 push    ds:dword_80497AA
.text:080482F4                 push    ds:dword_80497B6
.text:080482FA                 call    ds:dword_804ACAA
.text:08048300                 add     esp, 0Ch
.text:08048303                 xor     eax, eax
.text:08048305                 leave
.text:08048306                 retn    14h
.text:08048306 Xinitialize     endp
.text:08048306
.text:08048309
.text:08048309 ; =============== S U B R O U T I N E =======================================
.text:08048309
.text:08048309
.text:08048309 sub_8048309     proc near               ; CODE XREF: sub_8048638:loc_80486B8p
.text:08048309                 push    6Eh ; 'n'
.text:0804830B                 push    190h
.text:08048310                 push    6Eh ; 'n'
.text:08048312                 push    0
.text:08048314                 push    ds:dword_80497AA
.text:0804831A                 push    ds:dword_80497AE
.text:08048320                 push    ds:dword_80497B6
.text:08048326                 call    ds:dword_804AC72
.text:0804832C                 add     esp, 1Ch
.text:0804832F                 push    50h ; 'P'
.text:08048331                 push    190h
.text:08048336                 push    50h ; 'P'
.text:08048338                 push    0
.text:0804833A                 push    ds:dword_80497AA
.text:08048340                 push    ds:dword_80497AE
.text:08048346                 push    ds:dword_80497B6
.text:0804834C                 call    ds:dword_804AC72
.text:08048352                 add     esp, 1Ch
.text:08048355                 push    2Fh ; '/'
.text:08048357                 push    80496E5h
.text:0804835C                 push    64h ; 'd'
.text:0804835E                 push    0Ah
.text:08048360                 push    ds:dword_80497AA
.text:08048366                 push    ds:dword_80497AE
.text:0804836C                 push    ds:dword_80497B6
.text:08048372                 call    ds:dword_804AC7A
.text:08048378                 add     esp, 1Ch
.text:0804837B                 retn
.text:0804837B sub_8048309     endp
.text:0804837B
.text:0804837C
.text:0804837C ; =============== S U B R O U T I N E =======================================
.text:0804837C
.text:0804837C ; Attributes: bp-based frame
.text:0804837C
.text:0804837C sub_804837C     proc near               ; CODE XREF: sub_8048399+1E6p
.text:0804837C                                         ; sub_8048399+259p
.text:0804837C
.text:0804837C arg_0           = dword ptr  8
.text:0804837C
.text:0804837C                 push    ebp
.text:0804837D                 mov     ebp, esp
.text:0804837F                 push    esi
.text:08048380                 xor     eax, eax
.text:08048382                 mov     esi, [ebp+arg_0]
.text:08048385                 test    esi, esi
.text:08048387                 jz      short loc_8048394
.text:08048389                 cld
.text:0804838A
.text:0804838A loc_804838A:                            ; CODE XREF: sub_804837C+16j
.text:0804838A                 mov     cl, [esi]
.text:0804838C                 inc     esi
.text:0804838D                 test    cl, cl
.text:0804838F                 jz      short loc_8048394
.text:08048391                 inc     eax
.text:08048392                 jmp     short loc_804838A
.text:08048394 ; ---------------------------------------------------------------------------
.text:08048394
.text:08048394 loc_8048394:                            ; CODE XREF: sub_804837C+Bj
.text:08048394                                         ; sub_804837C+13j
.text:08048394                 pop     esi
.text:08048395                 leave
.text:08048396                 retn    4
.text:08048396 sub_804837C     endp
.text:08048396
.text:08048399
.text:08048399 ; =============== S U B R O U T I N E =======================================
.text:08048399
.text:08048399 ; Attributes: bp-based frame
.text:08048399
.text:08048399 sub_8048399     proc near               ; CODE XREF: sub_8048638+30p
.text:08048399                                         ; sub_8048638+4Cp ...
.text:08048399
.text:08048399 var_80          = dword ptr -80h
.text:08048399 var_7C          = dword ptr -7Ch
.text:08048399 var_78          = dword ptr -78h
.text:08048399 var_74          = dword ptr -74h
.text:08048399 var_24          = dword ptr -24h
.text:08048399 var_1C          = byte ptr -1Ch
.text:08048399 var_18          = byte ptr -18h
.text:08048399 var_14          = byte ptr -14h
.text:08048399 var_10          = byte ptr -10h
.text:08048399 var_C           = word ptr -0Ch
.text:08048399 var_A           = word ptr -0Ah
.text:08048399 var_8           = word ptr -8
.text:08048399 var_4           = dword ptr -4
.text:08048399 arg_0           = dword ptr  8
.text:08048399 arg_4           = dword ptr  0Ch
.text:08048399
.text:08048399                 enter   80h, 0
.text:0804839D                 push    ebx
.text:0804839E                 push    ecx
.text:0804839F                 push    esi
.text:080483A0                 push    edi
.text:080483A1                 lea     ecx, [ebp+var_80]
.text:080483A4                 push    ecx
.text:080483A5                 push    [ebp+arg_0]
.text:080483A8                 push    ds:dword_80497B6
.text:080483AE                 call    ds:dword_804AC8E
.text:080483B4                 add     esp, 0Ch
.text:080483B7                 dec     [ebp+var_78]
.text:080483BA                 dec     [ebp+var_74]
.text:080483BD                 push    0
.text:080483BF                 push    0
.text:080483C1                 push    [ebp+arg_0]
.text:080483C4                 push    ds:dword_80497B6
.text:080483CA                 call    ds:dword_804AC5E
.text:080483D0                 add     esp, 10h
.text:080483D3                 mov     ebx, eax
.text:080483D5                 push    ebx
.text:080483D6                 call    ds:dword_804AC8A
.text:080483DC                 add     esp, 4
.text:080483DF                 mov     [ebp+var_4], eax
.text:080483E2                 cmp     [ebp+arg_4], 0
.text:080483E6                 jnz     short loc_804845F
.text:080483E8                 push    606060h
.text:080483ED                 push    ebx
.text:080483EE                 push    ds:dword_80497B6
.text:080483F4                 call    ds:dword_804ACB2
.text:080483FA                 add     esp, 0Ch
.text:080483FD                 push    [ebp+var_74]
.text:08048400                 push    [ebp+var_78]
.text:08048403                 push    0
.text:08048405                 push    0
.text:08048407                 push    ebx
.text:08048408                 push    [ebp+arg_0]
.text:0804840B                 push    ds:dword_80497B6
.text:08048411                 call    ds:dword_804AC76
.text:08048417                 add     esp, 1Ch
.text:0804841A                 sub     [ebp+var_78], 2
.text:0804841E                 sub     [ebp+var_74], 2
.text:08048422                 push    0D4D0C8h
.text:08048427                 push    ebx
.text:08048428                 push    ds:dword_80497B6
.text:0804842E                 call    ds:dword_804ACB2
.text:08048434                 add     esp, 0Ch
.text:08048437                 push    [ebp+var_74]
.text:0804843A                 push    [ebp+var_78]
.text:0804843D                 push    1
.text:0804843F                 push    1
.text:08048441                 push    ebx
.text:08048442                 push    [ebp+arg_0]
.text:08048445                 push    ds:dword_80497B6
.text:0804844B                 call    ds:dword_804AC76
.text:08048451                 add     esp, 1Ch
.text:08048454                 inc     [ebp+var_78]
.text:08048457                 inc     [ebp+var_74]
.text:0804845A                 jmp     loc_8048554
.text:0804845F ; ---------------------------------------------------------------------------
.text:0804845F
.text:0804845F loc_804845F:                            ; CODE XREF: sub_8048399+4Dj
.text:0804845F                 push    0FFFFFFh
.text:08048464                 push    ebx
.text:08048465                 push    ds:dword_80497B6
.text:0804846B                 call    ds:dword_804ACB2
.text:08048471                 add     esp, 0Ch
.text:08048474                 push    0
.text:08048476                 push    [ebp+var_78]
.text:08048479                 push    0
.text:0804847B                 push    0
.text:0804847D                 push    ebx
.text:0804847E                 push    [ebp+arg_0]
.text:08048481                 push    ds:dword_80497B6
.text:08048487                 call    ds:dword_804AC72
.text:0804848D                 add     esp, 1Ch
.text:08048490                 push    [ebp+var_74]
.text:08048493                 push    0
.text:08048495                 push    0
.text:08048497                 push    0
.text:08048499                 push    ebx
.text:0804849A                 push    [ebp+arg_0]
.text:0804849D                 push    ds:dword_80497B6
.text:080484A3                 call    ds:dword_804AC72
.text:080484A9                 add     esp, 1Ch
.text:080484AC                 push    404040h
.text:080484B1                 push    ebx
.text:080484B2                 push    ds:dword_80497B6
.text:080484B8                 call    ds:dword_804ACB2
.text:080484BE                 add     esp, 0Ch
.text:080484C1                 push    [ebp+var_74]
.text:080484C4                 push    [ebp+var_78]
.text:080484C7                 push    [ebp+var_74]
.text:080484CA                 push    0
.text:080484CC                 push    ebx
.text:080484CD                 push    [ebp+arg_0]
.text:080484D0                 push    ds:dword_80497B6
.text:080484D6                 call    ds:dword_804AC72
.text:080484DC                 add     esp, 1Ch
.text:080484DF                 push    [ebp+var_74]
.text:080484E2                 push    [ebp+var_78]
.text:080484E5                 push    0
.text:080484E7                 push    [ebp+var_78]
.text:080484EA                 push    ebx
.text:080484EB                 push    [ebp+arg_0]
.text:080484EE                 push    ds:dword_80497B6
.text:080484F4                 call    ds:dword_804AC72
.text:080484FA                 add     esp, 1Ch
.text:080484FD                 dec     [ebp+var_78]
.text:08048500                 dec     [ebp+var_74]
.text:08048503                 push    808080h
.text:08048508                 push    ebx
.text:08048509                 push    ds:dword_80497B6
.text:0804850F                 call    ds:dword_804ACB2
.text:08048515                 add     esp, 0Ch
.text:08048518                 push    [ebp+var_74]
.text:0804851B                 push    [ebp+var_78]
.text:0804851E                 push    [ebp+var_74]
.text:08048521                 push    1
.text:08048523                 push    ebx
.text:08048524                 push    [ebp+arg_0]
.text:08048527                 push    ds:dword_80497B6
.text:0804852D                 call    ds:dword_804AC72
.text:08048533                 add     esp, 1Ch
.text:08048536                 push    [ebp+var_74]
.text:08048539                 push    [ebp+var_78]
.text:0804853C                 push    1
.text:0804853E                 push    [ebp+var_78]
.text:08048541                 push    ebx
.text:08048542                 push    [ebp+arg_0]
.text:08048545                 push    ds:dword_80497B6
.text:0804854B                 call    ds:dword_804AC72
.text:08048551                 add     esp, 1Ch
.text:08048554
.text:08048554 loc_8048554:                            ; CODE XREF: sub_8048399+C1j
.text:08048554                 push    0
.text:08048556                 push    ebx
.text:08048557                 push    ds:dword_80497B6
.text:0804855D                 call    ds:dword_804ACB2
.text:08048563                 add     esp, 0Ch
.text:08048566                 lea     ecx, [ebp+var_24]
.text:08048569                 push    ecx
.text:0804856A                 push    [ebp+arg_0]
.text:0804856D                 push    ds:dword_80497B6
.text:08048573                 call    ds:dword_804AC7E
.text:08048579                 add     esp, 0Ch
.text:0804857C                 push    [ebp+var_24]
.text:0804857F                 call    sub_804837C
.text:08048584                 mov     edi, eax
.text:08048586                 lea     ecx, [ebp+var_1C]
.text:08048589                 lea     edx, [ebp+var_18]
.text:0804858C                 lea     eax, [ebp+var_14]
.text:0804858F                 lea     esi, [ebp+var_10]
.text:08048592                 push    esi
.text:08048593                 push    eax
.text:08048594                 push    edx
.text:08048595                 push    ecx
.text:08048596                 push    edi
.text:08048597                 push    [ebp+var_24]
.text:0804859A                 push    [ebp+var_4]
.text:0804859D                 push    ds:dword_80497B6
.text:080485A3                 call    ds:dword_804ACA2
.text:080485A9                 add     esp, 20h
.text:080485AC                 xor     eax, eax
.text:080485AE                 mov     ax, [ebp+var_A]
.text:080485B2                 add     ax, [ebp+var_8]
.text:080485B6                 movsx   eax, ax
.text:080485B9                 sub     eax, [ebp+var_74]
.text:080485BC                 add     eax, 1
.text:080485BF                 neg     eax
.text:080485C1                 sar     eax, 1
.text:080485C3                 movsx   ecx, [ebp+var_A]
.text:080485C7                 lea     eax, [eax+ecx+1]
.text:080485CB                 mov     [ebp+var_7C], eax
.text:080485CE                 mov     ax, [ebp+var_C]
.text:080485D2                 movsx   eax, ax
.text:080485D5                 sub     eax, [ebp+var_78]
.text:080485D8                 add     eax, 1
.text:080485DB                 neg     eax
.text:080485DD                 sar     eax, 1
.text:080485DF                 add     eax, 1
.text:080485E2                 cmp     eax, 1
.text:080485E5                 jge     short loc_80485EC
.text:080485E7                 mov     eax, 1
.text:080485EC
.text:080485EC loc_80485EC:                            ; CODE XREF: sub_8048399+24Cj
.text:080485EC                 mov     [ebp+var_80], eax
.text:080485EF                 push    [ebp+var_24]
.text:080485F2                 call    sub_804837C
.text:080485F7                 push    eax
.text:080485F8                 push    [ebp+var_24]
.text:080485FB                 push    [ebp+var_7C]
.text:080485FE                 push    [ebp+var_80]
.text:08048601                 push    ebx
.text:08048602                 push    [ebp+arg_0]
.text:08048605                 push    ds:dword_80497B6
.text:0804860B                 call    ds:dword_804AC7A
.text:08048611                 add     esp, 1Ch
.text:08048614                 push    [ebp+var_24]
.text:08048617                 call    ds:dword_804AC82
.text:0804861D                 add     esp, 4
.text:08048620                 push    ebx
.text:08048621                 push    ds:dword_80497B6
.text:08048627                 call    ds:dword_804AC86
.text:0804862D                 add     esp, 8
.text:08048630                 pop     edi
.text:08048631                 pop     esi
.text:08048632                 pop     ecx
.text:08048633                 pop     ebx
.text:08048634                 leave
.text:08048635                 retn    8
.text:08048635 sub_8048399     endp
.text:08048635
.text:08048638
.text:08048638 ; =============== S U B R O U T I N E =======================================
.text:08048638
.text:08048638
.text:08048638 sub_8048638     proc near               ; CODE XREF: start+30p
.text:08048638                 mov     eax, ds:80497BAh
.text:0804863D                 cmp     eax, 0Ch
.text:08048640                 jz      short loc_804868A
.text:08048642                 cmp     eax, 2
.text:08048645                 jz      short loc_80486BE
.text:08048647                 cmp     eax, 7
.text:0804864A                 jz      short loc_804866E
.text:0804864C                 cmp     eax, 8
.text:0804864F                 jz      short loc_8048652
.text:08048651                 retn
.text:08048652 ; ---------------------------------------------------------------------------
.text:08048652
.text:08048652 loc_8048652:                            ; CODE XREF: sub_8048638+17j
.text:08048652                 mov     eax, ds:80497CAh
.text:08048657                 cmp     eax, ds:dword_80497B2
.text:0804865D                 jz      short loc_8048660
.text:0804865F                 retn
.text:08048660 ; ---------------------------------------------------------------------------
.text:08048660
.text:08048660 loc_8048660:                            ; CODE XREF: sub_8048638+25j
.text:08048660                 push    0
.text:08048662                 push    dword ptr ds:80497CAh
.text:08048668                 call    sub_8048399
.text:0804866D                 retn
.text:0804866E ; ---------------------------------------------------------------------------
.text:0804866E
.text:0804866E loc_804866E:                            ; CODE XREF: sub_8048638+12j
.text:0804866E                 mov     eax, ds:80497CAh
.text:08048673                 cmp     eax, ds:dword_80497B2
.text:08048679                 jz      short loc_804867C
.text:0804867B                 retn
.text:0804867C ; ---------------------------------------------------------------------------
.text:0804867C
.text:0804867C loc_804867C:                            ; CODE XREF: sub_8048638+41j
.text:0804867C                 push    1
.text:0804867E                 push    dword ptr ds:80497CAh
.text:08048684                 call    sub_8048399
.text:08048689                 retn
.text:0804868A ; ---------------------------------------------------------------------------
.text:0804868A
.text:0804868A loc_804868A:                            ; CODE XREF: sub_8048638+8j
.text:0804868A                 cmp     dword ptr ds:80497DEh, 0
.text:08048691                 jz      short loc_8048694
.text:08048693                 retn
.text:08048694 ; ---------------------------------------------------------------------------
.text:08048694
.text:08048694 loc_8048694:                            ; CODE XREF: sub_8048638+59j
.text:08048694                 mov     eax, ds:80497CAh
.text:08048699                 cmp     eax, ds:dword_80497AE
.text:0804869F                 jz      short loc_80486B8
.text:080486A1                 cmp     eax, ds:dword_80497B2
.text:080486A7                 jz      short loc_80486AA
.text:080486A9                 retn
.text:080486AA ; ---------------------------------------------------------------------------
.text:080486AA
.text:080486AA loc_80486AA:                            ; CODE XREF: sub_8048638+6Fj
.text:080486AA                 push    0
.text:080486AC                 push    ds:dword_80497B2
.text:080486B2                 call    sub_8048399
.text:080486B7                 retn
.text:080486B8 ; ---------------------------------------------------------------------------
.text:080486B8
.text:080486B8 loc_80486B8:                            ; CODE XREF: sub_8048638+67j
.text:080486B8                 call    sub_8048309
.text:080486BD                 retn
.text:080486BE ; ---------------------------------------------------------------------------
.text:080486BE
.text:080486BE loc_80486BE:                            ; CODE XREF: sub_8048638+Dj
.text:080486BE                 push    0
.text:080486C0                 push    80497BAh
.text:080486C5                 call    ds:dword_804AC92
.text:080486CB                 add     esp, 8
.text:080486CE                 cmp     eax, 71h ; 'q'
.text:080486D1                 jz      short loc_80486D4
.text:080486D3                 retn
.text:080486D4 ; ---------------------------------------------------------------------------
.text:080486D4
.text:080486D4 loc_80486D4:                            ; CODE XREF: sub_8048638+99j
.text:080486D4                 jmp     loc_8048110
.text:080486D4 sub_8048638     endp
.text:080486D4
.text:080486D4 _text           ends
.text:080486D4
seg002:080496D9 ; ===========================================================================
seg002:080496D9
seg002:080496D9 ; Segment type: Regular
seg002:080496D9 seg002          segment byte public '' use32
seg002:080496D9                 assume cs:seg002
seg002:080496D9                 ;org 80496D9h
seg002:080496D9                 assume es:nothing, ss:nothing, ds:nothing, fs:nothing, gs:nothing
seg002:080496D9 _title          db 'Xlib Fresh!',0      ; DATA XREF: seg000:ProgramHeadero
seg002:080496D9                                         ; start+12o
seg002:080496E5 aThisIsNativeAs db 'This is native assembly language Linux program.Button',0
seg002:0804971B dword_804971B   dd 0                    ; DATA XREF: sub_8048120+2Ar
seg002:0804971F aXopendisplayCo db 'XOpenDisplay: could not open connection to X server.',0
seg002:08049754 aXcreatesimpl_0 db 'XCreateSimpleWindow: could not create window.',0
seg002:08049782 aXmapraisedCoul db 'XMapRaised: could not display window.',0
seg002:080497A8                 db 0Ah,0
seg002:080497AA dword_80497AA   dd 0                    ; DATA XREF: sub_8048120r
seg002:080497AA                                         ; Xinitialize+171w ...
seg002:080497AE dword_80497AE   dd 0                    ; DATA XREF: sub_8048120+1Br
seg002:080497AE                                         ; Xinitialize:loc_80481DFw ...
seg002:080497B2 dword_80497B2   dd 0                    ; DATA XREF: Xinitialize+ACw
seg002:080497B2                                         ; Xinitialize+D0r ...
seg002:080497B6 dword_80497B6   dd 0                    ; DATA XREF: start+21r
seg002:080497B6                                         ; sub_8048120+6r ...
seg002:080497B6 seg002          ends
seg002:080497B6
seg003:0804A7BA ; ===========================================================================
seg003:0804A7BA
seg003:0804A7BA ; Segment type: Regular
seg003:0804A7BA seg003          segment byte public '' use32
seg003:0804A7BA                 assume cs:seg003
seg003:0804A7BA                 ;org 804A7BAh
seg003:0804A7BA                 assume es:nothing, ss:nothing, ds:nothing, fs:nothing, gs:nothing
seg003:0804A7BA aLibLdLinux_so_ db '/lib/ld-linux.so.2',0 ; DATA XREF: seg000:ProgramHeadero
seg003:0804A7BA seg003          ends
seg003:0804A7BA
seg004:0804A7CD ; ===========================================================================
seg004:0804A7CD
seg004:0804A7CD ; Segment type: Regular
seg004:0804A7CD seg004          segment byte public '' use32
seg004:0804A7CD                 assume cs:seg004
seg004:0804A7CD                 ;org 804A7CDh
seg004:0804A7CD                 assume es:nothing, ss:nothing, ds:nothing, fs:nothing, gs:nothing
seg004:0804A7CD _DYNAMIC        Elf32_Dyn_o <DT_NEEDED, offset aLibc_so_6 - offset _STRTAB>
seg004:0804A7CD                                         ; DATA XREF: seg000:ProgramHeadero
seg004:0804A7CD                                         ; "libc.so.6"
seg004:0804A7D5                 Elf32_Dyn_o <DT_NEEDED, offset aLibx11_so_6 - offset _STRTAB> ; "libX11.so.6"
seg004:0804A7DD                 Elf32_Dyn_p <DT_STRTAB, offset _STRTAB>
seg004:0804A7E5                 Elf32_Dyn_v <DT_STRSZ, 15Dh>
seg004:0804A7ED                 Elf32_Dyn_p <DT_SYMTAB, offset _SYMTAB>
seg004:0804A7F5                 Elf32_Dyn_v <DT_SYMENT, 10h>
seg004:0804A7FD                 Elf32_Dyn_p <DT_REL, offset _RELTAB>
seg004:0804A805                 Elf32_Dyn_v <DT_RELSZ, 0C8h>
seg004:0804A80D                 Elf32_Dyn_v <DT_RELENT, 8>
seg004:0804A815                 Elf32_Dyn_p <DT_HASH, offset _HASHTAB>
seg004:0804A81D                 db    0
seg004:0804A81E                 db    0
seg004:0804A81F                 db    0
seg004:0804A820                 db    0
seg004:0804A821                 db    0
seg004:0804A822                 db    0
seg004:0804A823                 db    0
seg004:0804A824                 db    0
seg004:0804A824 seg004          ends
seg004:0804A824
seg005:0804A825 ; ===========================================================================
seg005:0804A825
seg005:0804A825 ; Segment type: Regular
seg005:0804A825 seg005          segment byte public '' use32
seg005:0804A825                 assume cs:seg005
seg005:0804A825                 ;org 804A825h
seg005:0804A825                 assume es:nothing, ss:nothing, ds:nothing, fs:nothing, gs:nothing
seg005:0804A825 _SYMTAB         Elf32_Sym <0>           ; DATA XREF: seg000:ProgramHeadero
seg005:0804A825                                         ; seg004:0804A7EDo
seg005:0804A835                 Elf32_Sym <offset aXcreategc - offset _STRTAB, 0, 0, \ ; "XCreateGC"
seg005:0804A835                            STT_FUNC or STB_GLOBAL, STV_DEFAULT, 0>; 0
seg005:0804A835                 Elf32_Sym <offset aXcreatesimplew - offset _STRTAB, 0, 0, \
seg005:0804A835                            STT_FUNC or STB_GLOBAL, STV_DEFAULT, 0>; 1
seg005:0804A835                 Elf32_Sym <offset aXdefaultrootwi - offset _STRTAB, 0, 0, \
seg005:0804A835                            STT_FUNC or STB_GLOBAL, STV_DEFAULT, 0>; 2
seg005:0804A835                 Elf32_Sym <offset aXdefaultscreen - offset _STRTAB, 0, 0, \
seg005:0804A835                            STT_FUNC or STB_GLOBAL, STV_DEFAULT, 0>; 3
seg005:0804A835                 Elf32_Sym <offset aXdestroywindow - offset _STRTAB, 0, 0, \
seg005:0804A835                            STT_FUNC or STB_GLOBAL, STV_DEFAULT, 0>; 4
seg005:0804A835                 Elf32_Sym <offset aXdrawline - offset _STRTAB, 0, 0, \
seg005:0804A835                            STT_FUNC or STB_GLOBAL, STV_DEFAULT, 0>; 5
seg005:0804A835                 Elf32_Sym <offset aXdrawrectangle - offset _STRTAB, 0, 0, \
seg005:0804A835                            STT_FUNC or STB_GLOBAL, STV_DEFAULT, 0>; 6
seg005:0804A835                 Elf32_Sym <offset aXdrawstring - offset _STRTAB, 0, 0, \
seg005:0804A835                            STT_FUNC or STB_GLOBAL, STV_DEFAULT, 0>; 7
seg005:0804A835                 Elf32_Sym <offset aXfetchname - offset _STRTAB, 0, 0, \
seg005:0804A835                            STT_FUNC or STB_GLOBAL, STV_DEFAULT, 0>; 8
seg005:0804A835                 Elf32_Sym <offset aXfree - offset _STRTAB, 0, 0, \
seg005:0804A835                            STT_FUNC or STB_GLOBAL, STV_DEFAULT, 0>; 9
seg005:0804A835                 Elf32_Sym <offset aXfreegc - offset _STRTAB, 0, 0, \
seg005:0804A835                            STT_FUNC or STB_GLOBAL, STV_DEFAULT, 0>; 10
seg005:0804A835                 Elf32_Sym <offset aXgcontextfromg - offset _STRTAB, 0, 0, \
seg005:0804A835                            STT_FUNC or STB_GLOBAL, STV_DEFAULT, 0>; 11
seg005:0804A835                 Elf32_Sym <offset aXgetwindowattr - offset _STRTAB, 0, 0, \
seg005:0804A835                            STT_FUNC or STB_GLOBAL, STV_DEFAULT, 0>; 12
seg005:0804A835                 Elf32_Sym <offset aXlookupkeysym - offset _STRTAB, 0, 0, \
seg005:0804A835                            STT_FUNC or STB_GLOBAL, STV_DEFAULT, 0>; 13
seg005:0804A835                 Elf32_Sym <offset aXmapraised - offset _STRTAB, 0, 0, \
seg005:0804A835                            STT_FUNC or STB_GLOBAL, STV_DEFAULT, 0>; 14
seg005:0804A835                 Elf32_Sym <offset aXnextevent - offset _STRTAB, 0, 0, \
seg005:0804A835                            STT_FUNC or STB_GLOBAL, STV_DEFAULT, 0>; 15
seg005:0804A835                 Elf32_Sym <offset aXopendisplay - offset _STRTAB, 0, 0, \
seg005:0804A835                            STT_FUNC or STB_GLOBAL, STV_DEFAULT, 0>; 16
seg005:0804A835                 Elf32_Sym <offset aXquerytextexte - offset _STRTAB, 0, 0, \
seg005:0804A835                            STT_FUNC or STB_GLOBAL, STV_DEFAULT, 0>; 17
seg005:0804A835                 Elf32_Sym <offset aXselectinput - offset _STRTAB, 0, 0, \
seg005:0804A835                            STT_FUNC or STB_GLOBAL, STV_DEFAULT, 0>; 18
seg005:0804A835                 Elf32_Sym <offset aXsetbackground - offset _STRTAB, 0, 0, \
seg005:0804A835                            STT_FUNC or STB_GLOBAL, STV_DEFAULT, 0>; 19
seg005:0804A835                 Elf32_Sym <offset aXseterrorhandl - offset _STRTAB, 0, 0, \
seg005:0804A835                            STT_FUNC or STB_GLOBAL, STV_DEFAULT, 0>; 20
seg005:0804A835                 Elf32_Sym <offset aXsetforeground - offset _STRTAB, 0, 0, \
seg005:0804A835                            STT_FUNC or STB_GLOBAL, STV_DEFAULT, 0>; 21
seg005:0804A835                 Elf32_Sym <offset aXstorename - offset _STRTAB, 0, 0, \
seg005:0804A835                            STT_FUNC or STB_GLOBAL, STV_DEFAULT, 0>; 22
seg005:0804A835                 Elf32_Sym <offset aPuts - offset _STRTAB, 0, 0, \
seg005:0804A835                            STT_FUNC or STB_GLOBAL, STV_DEFAULT, 0>; 23
seg005:0804A835                 Elf32_Sym <offset aExit - offset _STRTAB, 0, 0, \
seg005:0804A835                            STT_FUNC or STB_GLOBAL, STV_DEFAULT, 0>; 24
seg005:0804A9C5 _RELTAB         Elf32_Rel <offset dword_804AC5E, 101h>; 0
seg005:0804A9C5                                         ; DATA XREF: seg004:0804A7FDo
seg005:0804A9C5                 Elf32_Rel <offset dword_804AC62, 201h>; 1
seg005:0804A9C5                 Elf32_Rel <offset dword_804AC66, 301h>; 2
seg005:0804A9C5                 Elf32_Rel <offset dword_804AC6A, 401h>; 3
seg005:0804A9C5                 Elf32_Rel <offset dword_804AC6E, 501h>; 4
seg005:0804A9C5                 Elf32_Rel <offset dword_804AC72, 601h>; 5
seg005:0804A9C5                 Elf32_Rel <offset dword_804AC76, 701h>; 6
seg005:0804A9C5                 Elf32_Rel <offset dword_804AC7A, 801h>; 7
seg005:0804A9C5                 Elf32_Rel <offset dword_804AC7E, 901h>; 8
seg005:0804A9C5                 Elf32_Rel <offset dword_804AC82, 0A01h>; 9
seg005:0804A9C5                 Elf32_Rel <offset dword_804AC86, 0B01h>; 10
seg005:0804A9C5                 Elf32_Rel <offset dword_804AC8A, 0C01h>; 11
seg005:0804A9C5                 Elf32_Rel <offset dword_804AC8E, 0D01h>; 12
seg005:0804A9C5                 Elf32_Rel <offset dword_804AC92, 0E01h>; 13
seg005:0804A9C5                 Elf32_Rel <offset dword_804AC96, 0F01h>; 14
seg005:0804A9C5                 Elf32_Rel <offset dword_804AC9A, 1001h>; 15
seg005:0804A9C5                 Elf32_Rel <offset dword_804AC9E, 1101h>; 16
seg005:0804A9C5                 Elf32_Rel <offset dword_804ACA2, 1201h>; 17
seg005:0804A9C5                 Elf32_Rel <offset dword_804ACA6, 1301h>; 18
seg005:0804A9C5                 Elf32_Rel <offset dword_804ACAA, 1401h>; 19
seg005:0804A9C5                 Elf32_Rel <offset dword_804ACAE, 1501h>; 20
seg005:0804A9C5                 Elf32_Rel <offset dword_804ACB2, 1601h>; 21
seg005:0804A9C5                 Elf32_Rel <offset dword_804ACB6, 1701h>; 22
seg005:0804A9C5                 Elf32_Rel <offset dword_804ACBA, 1801h>; 23
seg005:0804A9C5                 Elf32_Rel <offset dword_804ACBE, 1901h>; 24
seg005:0804AA8D _HASHTAB        db    1                 ; DATA XREF: seg004:0804A815o
seg005:0804AA8E                 db    0
seg005:0804AA8F                 db    0
seg005:0804AA90                 db    0
seg005:0804AA91                 dd 26
seg005:0804AA95                 dd 0, 1, 2, 3, 4, 5, 6  ; 0
seg005:0804AA95                 dd 7, 8, 9, 10, 11, 12, 13; 7
seg005:0804AA95                 dd 14, 15, 16, 17, 18, 19, 20; 14
seg005:0804AA95                 dd 21, 22, 23, 24, 25, 0; 21
seg005:0804AB01 _STRTAB         db    0                 ; DATA XREF: seg004:_DYNAMIC+4o
seg005:0804AB01                                         ; seg004:0804A7D9o ...
seg005:0804AB02 aXcreategc      db 'XCreateGC',0        ; DATA XREF: seg005:0804A835o
seg005:0804AB0C aXcreatesimplew db 'XCreateSimpleWindow',0 ; DATA XREF: seg005:0804A835o
seg005:0804AB20 aXdefaultrootwi db 'XDefaultRootWindow',0 ; DATA XREF: seg005:0804A835o
seg005:0804AB33 aXdefaultscreen db 'XDefaultScreen',0   ; DATA XREF: seg005:0804A835o
seg005:0804AB42 aXdestroywindow db 'XDestroyWindow',0   ; DATA XREF: seg005:0804A835o
seg005:0804AB51 aXdrawline      db 'XDrawLine',0        ; DATA XREF: seg005:0804A835o
seg005:0804AB5B aXdrawrectangle db 'XDrawRectangle',0   ; DATA XREF: seg005:0804A835o
seg005:0804AB6A aXdrawstring    db 'XDrawString',0      ; DATA XREF: seg005:0804A835o
seg005:0804AB76 aXfetchname     db 'XFetchName',0       ; DATA XREF: seg005:0804A835o
seg005:0804AB81 aXfree          db 'XFree',0            ; DATA XREF: seg005:0804A835o
seg005:0804AB87 aXfreegc        db 'XFreeGC',0          ; DATA XREF: seg005:0804A835o
seg005:0804AB8F aXgcontextfromg db 'XGContextFromGC',0  ; DATA XREF: seg005:0804A835o
seg005:0804AB9F aXgetwindowattr db 'XGetWindowAttributes',0 ; DATA XREF: seg005:0804A835o
seg005:0804ABB4 aXlookupkeysym  db 'XLookupKeysym',0    ; DATA XREF: seg005:0804A835o
seg005:0804ABC2 aXmapraised     db 'XMapRaised',0       ; DATA XREF: seg005:0804A835o
seg005:0804ABCD aXnextevent     db 'XNextEvent',0       ; DATA XREF: seg005:0804A835o
seg005:0804ABD8 aXopendisplay   db 'XOpenDisplay',0     ; DATA XREF: seg005:0804A835o
seg005:0804ABE5 aXquerytextexte db 'XQueryTextExtents',0 ; DATA XREF: seg005:0804A835o
seg005:0804ABF7 aXselectinput   db 'XSelectInput',0     ; DATA XREF: seg005:0804A835o
seg005:0804AC04 aXsetbackground db 'XSetBackground',0   ; DATA XREF: seg005:0804A835o
seg005:0804AC13 aXseterrorhandl db 'XSetErrorHandler',0 ; DATA XREF: seg005:0804A835o
seg005:0804AC24 aXsetforeground db 'XSetForeground',0   ; DATA XREF: seg005:0804A835o
seg005:0804AC33 aXstorename     db 'XStoreName',0       ; DATA XREF: seg005:0804A835o
seg005:0804AC3E aPuts           db 'puts',0             ; DATA XREF: seg005:0804A835o
seg005:0804AC43 aExit           db 'exit',0             ; DATA XREF: seg005:0804A835o
seg005:0804AC48 aLibc_so_6      db 'libc.so.6',0        ; DATA XREF: seg004:_DYNAMICo
seg005:0804AC52 aLibx11_so_6    db 'libX11.so.6',0      ; DATA XREF: seg004:0804A7D5o
seg005:0804AC5E dword_804AC5E   dd 0                    ; DATA XREF: Xinitialize+168r
seg005:0804AC5E                                         ; sub_8048399+31r ...
seg005:0804AC62 dword_804AC62   dd 0                    ; DATA XREF: Xinitialize+63r
seg005:0804AC62                                         ; Xinitialize+A3r ...
seg005:0804AC66 dword_804AC66   dd 0                    ; DATA XREF: Xinitialize+3Br
seg005:0804AC66                                         ; seg005:_RELTABo
seg005:0804AC6A dword_804AC6A   dd 0                    ; DATA XREF: Xinitialize+29r
seg005:0804AC6A                                         ; seg005:_RELTABo
seg005:0804AC6E dword_804AC6E   dd 0                    ; DATA XREF: sub_8048120+21r
seg005:0804AC6E                                         ; seg005:_RELTABo
seg005:0804AC72 dword_804AC72   dd 0                    ; DATA XREF: sub_8048309+1Dr
seg005:0804AC72                                         ; sub_8048309+43r ...
seg005:0804AC76 dword_804AC76   dd 0                    ; DATA XREF: sub_8048399+78r
seg005:0804AC76                                         ; sub_8048399+B2r ...
seg005:0804AC7A dword_804AC7A   dd 0                    ; DATA XREF: sub_8048309+69r
seg005:0804AC7A                                         ; sub_8048399+272r ...
seg005:0804AC7E dword_804AC7E   dd 0                    ; DATA XREF: sub_8048399+1DAr
seg005:0804AC7E                                         ; seg005:_RELTABo
seg005:0804AC82 dword_804AC82   dd 0                    ; DATA XREF: sub_8048399+27Er
seg005:0804AC82                                         ; seg005:_RELTABo
seg005:0804AC86 dword_804AC86   dd 0                    ; DATA XREF: sub_8048120+Cr
seg005:0804AC86                                         ; sub_8048399+28Er ...
seg005:0804AC8A dword_804AC8A   dd 0                    ; DATA XREF: sub_8048399+3Dr
seg005:0804AC8A                                         ; seg005:_RELTABo
seg005:0804AC8E dword_804AC8E   dd 0                    ; DATA XREF: sub_8048399+15r
seg005:0804AC8E                                         ; seg005:_RELTABo
seg005:0804AC92 dword_804AC92   dd 0                    ; DATA XREF: sub_8048638+8Dr
seg005:0804AC92                                         ; seg005:_RELTABo
seg005:0804AC96 dword_804AC96   dd 0                    ; DATA XREF: Xinitialize+123r
seg005:0804AC96                                         ; Xinitialize+138r ...
seg005:0804AC9A dword_804AC9A   dd 0                    ; DATA XREF: start+27r
seg005:0804AC9A                                         ; seg005:_RELTABo
seg005:0804AC9E dword_804AC9E   dd 0                    ; DATA XREF: Xinitialize+6r
seg005:0804AC9E                                         ; seg005:_RELTABo
seg005:0804ACA2 dword_804ACA2   dd 0                    ; DATA XREF: sub_8048399+20Ar
seg005:0804ACA2                                         ; seg005:_RELTABo
seg005:0804ACA6 dword_804ACA6   dd 0                    ; DATA XREF: Xinitialize+C2r
seg005:0804ACA6                                         ; Xinitialize+DCr ...
seg005:0804ACAA dword_804ACAA   dd 0                    ; DATA XREF: Xinitialize+19Er
seg005:0804ACAA                                         ; seg005:_RELTABo
seg005:0804ACAE dword_804ACAE   dd 0                    ; DATA XREF: sub_8048120+30r
seg005:0804ACAE                                         ; seg005:_RELTABo
seg005:0804ACB2 dword_804ACB2   dd 0                    ; DATA XREF: Xinitialize+184r
seg005:0804ACB2                                         ; sub_8048399+5Br ...
seg005:0804ACB6 dword_804ACB6   dd 0                    ; DATA XREF: Xinitialize+F4r
seg005:0804ACB6                                         ; Xinitialize+10Er ...
seg005:0804ACBA dword_804ACBA   dd 0                    ; DATA XREF: Xinitialize+18r
seg005:0804ACBA                                         ; Xinitialize+75r ...
seg005:0804ACBE dword_804ACBE   dd 0                    ; DATA XREF: Xinitialize-49r
seg005:0804ACBE                                         ; seg005:_RELTABo
seg005:0804ACBE seg005          ends
seg005:0804ACBE
seg005:0804ACBE
seg005:0804ACBE                 end       


where error exactly:
Code:
seg000:00000034 ProgramHeader   Elf32_Phdr <PT_LOAD, 0D4h, offset start, offset start, 605h, 605h, \
seg000:00000034                                         ; DATA XREF: seg000:stru_0o
seg000:00000034                             PF_X or PF_R, 1000h>; 0 ; "Xlib Fresh!"
seg000:00000034                 Elf32_Phdr <PT_LOAD, 6D9h, offset _title, offset _title, 0E1h, 2F1h, \
seg000:00000034                             PF_W or PF_R, 1000h>; 1
seg000:00000034                 Elf32_Phdr <PT_INTERP, 7BAh, offset aLibLdLinux_so_, \
seg000:00000034                             offset aLibLdLinux_so_, 13h, 13h, PF_R, 1>; 2
seg000:00000034                 Elf32_Phdr <PT_DYNAMIC, 7CDh, offset _DYNAMIC, offset _DYNAMIC, 58h, \
seg000:00000034                             58h, PF_R, 1>; 3
seg000:00000034                 Elf32_Phdr <PT_LOAD, 825h, offset _SYMTAB, offset _SYMTAB, 49Dh, 49Dh,\
seg000:00000034                             PF_W or PF_R, 1000h>; 4
seg000:00000034 seg000          ends     


we can see that 2nd ProgramHeader entry has uninitialized data
BUT next entry starts from address shifted by only amount of initialized data.
That overlap don`t cause error at execution. BUT it is logicaly incorrect.
maybe that related only outdate fasm versions (because fresh longtime not updated). Tomasz, please fix it if it still actual.

By the way thanks John Found, I asking on forum for a long time for working linux GUI, in thour tool it always was there. (I looked one builded at most low level technology as possible (not higher than Xserver, because I`m hater of GTK and QT and similar ones - which are far far from low level technology).

whole sources https://yadi.sk/d/Z2wr66TOK9pnIw (EXTRACTED FROM FRESH)
with fasmw17324 tryed to assemble Xlib.asm, with fresh XLib.fpr - both bring to the same result - produced elf is valid - but present segment overlap in its segment (if it was PE not ELF - it will be unexecutable, but in case of ELF - I can`t agree than segment overlaping is good, especialy in cases when such overlap happend unpredictebly to programmer`s will).

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Post 29 May 2020, 00:56
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Tomasz Grysztar



Joined: 16 Jun 2003
Posts: 7796
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Tomasz Grysztar
See the announcement of 1.73.05 release for an explanation why segments PT_INTERP or PT_DYNAMIC have been made to overlap with contents of a PT_LOAD segment - otherwise they would not be loaded into memory at all, and this causes problems with implementations that assume otherwise.

I'm not sure if what you report is directly related, because I got a bit lost in your post, but the mention of overlapping segments gave me the suspicion. Please read the threads I linked to get a better understanding of what fasm needs to do when laying out the segments. If you find that there is nonetheless a bug there somewhere, please try to report it in a bit more clean way, preferably with a minimized source.

Also keep in mind that with fasmg's elfexe.inc you can get the legacy behavior with ELF.Settings.LoadHeaders=0 option.
Post 29 May 2020, 13:47
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ProMiNick



Joined: 24 Mar 2012
Posts: 574
Location: Russian Federation, Sochi
ProMiNick
Correct me if I wrong.
interpreter segment must be first, it must precede PT_LOAD segment & overlap with it.
In example I post interpreter overlapped with preciding not following segment, because of breaking requirement to interpreter segment to be first segment. (I gues example wasn`t fixed to have interpreter as 1st section).
By the way how it should overlap? at begining or at the end of PT_LOAD segment?

One more it is interpreter requirement. Interpreter itself isnt required? application could load itself to memory and apply relocs without needance in interpreter?
Post 29 May 2020, 16:09
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Tomasz Grysztar



Joined: 16 Jun 2003
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Location: Kraków, Poland
Tomasz Grysztar
ProMiNick wrote:
In example I post interpreter overlapped with preciding not following segment, because of breaking requirement to interpreter segment to be first segment.
I don't see it in your example. You have preceding segment at address 080496D9, which resides entirely in 08049xxx page (because its size is only 2F1h), and PT_INTERP is mapped at 0804A7BA, which is in 0804Axxx page and therefore should be mapped by the next PT_LOAD.

ProMiNick wrote:
(I gues example wasn`t fixed to have interpreter as 1st section).
Yes, this is the part of specification that needs to be fulfilled manually when deciding on segment order, because fasm preserves the segment order defined by the source.

ProMiNick wrote:
By the way how it should overlap? at begining or at the end of PT_LOAD segment?
It needs to be at the beginning of mapped segment, because continuous data range in file needs to mapped into a continuous area in memory. If it was at the end of another segment, any undefined data that is not put into file would break this.

ProMiNick wrote:
One more it is interpreter requirement. Interpreter itself isnt required? application could load itself to memory and apply relocs without needance in interpreter?
You can run interpreter program manually with your ELF file as an argument. The PT_INTERP segment is only there to let OS know what interpreter it should use by default.
Post 29 May 2020, 16:44
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ProMiNick



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Posts: 574
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ProMiNick
Tomasz Grysztar wrote:
I don't see it in your example. You have preceding segment at address 080496D9, which resides entirely in 08049xxx page (because its size is only 2F1h), and PT_INTERP is mapped at 0804A7BA, which is in 0804Axxx page and therefore should be mapped by the next PT_LOAD.

6D9h+2F1h=825h - start of segment after interpreter & dynamic (end of segment with uninit data)
6D9h+0E1h=7BAh - start of interpreter segment (end of init data - point where uninit data starts)

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Post 29 May 2020, 18:54
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Tomasz Grysztar



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Tomasz Grysztar
Your numbers do not add up, 6D9h+2F1h = 9CAh.
Also, they are offsets in file, not addresses in memory. In memory the end of segment with uninitialized data is 080499CAh (base 080496D9h + size 2F1h), while interpreter data is at 0804A7BAh, which is in the next page.

PS. Your disassembly output looks a bit obscure, I would suggest posting something like the output of "readelf -l".
Post 29 May 2020, 19:06
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ProMiNick



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ProMiNick
I`m not linuxer, in linux I only launched program. But in linux I`m blind kitten - dosn`t knowing any its tools, so for disassembly I returned back to windows.
Post 29 May 2020, 19:24
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