forked from KolibriOS/kolibrios
2557 lines
63 KiB
NASM
2557 lines
63 KiB
NASM
COLOR_THEME fix BLACK_ON_WHITE
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format binary as ""
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include '../../macros.inc'
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use32
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db 'MENUET01'
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dd 1
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dd start
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dd i_end
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dd used_mem
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dd used_mem
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dd i_param
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dd 0
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;-----------------------------------------------------------------------------
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REG_MODE_CPU equ 1
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REG_MODE_MMX equ 2
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REG_MODE_SSE equ 3
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REG_MODE_AVX equ 4
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;-----------------------------------------------------------------------------
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include 'gui.inc' ; GUI routines
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;-----------------------------------------------------------------------------
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; Find command in list
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find_cmd:
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; all commands are case-insensitive
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push edi
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.x4:
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mov al, [edi]
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cmp al, 0
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jz .x5
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cmp al, 'A'
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jb @f
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cmp al, 'Z'
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ja @f
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or al, 20h
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@@:
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stosb
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jmp .x4
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; find command
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.x5:
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pop edi
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.x6:
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cmp dword [esi], 0
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jz .x7
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push esi
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mov esi, [esi]
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lodsb
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movzx ecx, al
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push edi
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repz cmpsb
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pop edi
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pop esi
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jz .x8
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add esi, 17
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jmp .x6
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.x7:
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stc
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.x8:
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ret
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; DEBUGGING ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;-----------------------------------------------------------------------------
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; Help event
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OnHelp:
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mov esi, help_msg
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mov edi, [curarg]
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cmp byte [edi], 0
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jz .x
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mov esi, help_groups
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call find_cmd
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jc .nocmd
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mov esi, [esi+12]
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.x:
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jmp put_message
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.nocmd:
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mov esi, aUnknownCommand
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jmp .x
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;-----------------------------------------------------------------------------
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; Quit event
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OnQuit:
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mcall -1
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;-----------------------------------------------------------------------------
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; Working with debug context
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get_new_context:
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mov esi, context
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mov edi, oldcontext
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mov ecx, (ctx_end-context)/4
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rep movsd
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get_context:
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mcall 69, 1, [debuggee_pid], ctx_end-context, context
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ret
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set_context:
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;push 2
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;pop ebx
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;push 69
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;pop eax
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;mov ecx, [debuggee_pid]
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;mov esi, context
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;push 28h
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;pop edx
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mcall 69, 2, [debuggee_pid], 28h, context
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ret
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get_dump:
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mov edi, dumpdata
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mov esi, [edi-4]
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mov edx, dump_height*10h
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mov ecx, edx
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xor eax, eax
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push edi
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rep stosb
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pop edi
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;mov ecx, [debuggee_pid]
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;mov al, 69
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;push 6
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;pop ebx
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mcall 69, 6, [debuggee_pid]
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cmp eax, -1
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jnz @f
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mov esi, read_mem_err
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call put_message
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xor eax, eax
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@@:
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mov [edi-8], eax
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; call restore_from_breaks
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; ret
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; in: edi=buffer,eax=size,esi=address
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restore_from_breaks:
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mov ebx, breakpoints
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@@:
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test byte [ebx+4], 1
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jz .cont ; ignore invalid
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test byte [ebx+4], 2 or 8
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jnz .cont ; ignore disabled and memory breaks
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mov ecx, [ebx]
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sub ecx, esi
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cmp ecx, eax
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jae .cont
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mov dl, [ebx+5]
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mov [edi+ecx], dl
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.cont:
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add ebx, 6
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cmp ebx, breakpoints+breakpoints_n*6
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jb @b
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ret
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;-----------------------------------------------------------------------------
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; Load executable event
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OnLoad:
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mov esi, [curarg]
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OnLoadInit:
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mov edi, loadname
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or [prgname_len], -1
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mov [prgname_ptr], edi
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.copyname:
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lodsb
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stosb
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inc [prgname_len]
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cmp al, '/'
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jnz @f
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or [prgname_len], -1
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mov [prgname_ptr], edi
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@@:
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cmp al, ' '
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ja .copyname
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mov byte [edi-1], 0
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and [load_params], 0
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dec esi
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call get_arg.skip_spaces
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cmp al, 0
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jz @f
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mov [load_params], esi
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@@:
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and [dumppos], 0
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mov ecx, [symbols]
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jecxz do_reload
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mcall 68, 13
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and [symbols], 0
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and [num_symbols], 0
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; TODO: make it local
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do_reload:
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;push 18
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;pop eax
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;push 7
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;pop ebx
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mcall 18, 7
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mov [dbgwnd], eax
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xchg ecx, eax
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;push 70
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;pop eax
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;mov ebx, fn70_load_block
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mcall 70, fn70_load_block
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test eax, eax
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jns .load_ok
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.load_err:
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push eax
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mov esi, load_err_msg
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call put_message
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pop eax
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not eax
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cmp eax, 0x20
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jae .unk_err
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mov esi, [load_err_msgs+eax*4]
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test esi, esi
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jnz put_message
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.unk_err:
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mov esi, unk_err_msg
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inc eax
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push eax
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call put_message_nodraw
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jmp draw_messages
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.load_ok:
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mov [debuggee_pid], eax
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mov [bSuspended], 1
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push ecx
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call get_context
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mov edi, oldcontext
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mov ecx, (ctx_end-context)/4
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rep movsd
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; activate debugger window
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pop ecx
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;mov bl, 3
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;push 18
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;pop eax
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mcall 18, 3
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call redraw_title
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call draw_registers.redraw
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; read and draw dump of memory
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call get_dump
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call draw_dump.redraw
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call update_disasm_eip_force
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mov esi, load_succ_msg
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push [debuggee_pid]
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call put_message_nodraw
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call draw_messages
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; try to load symbols
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mov esi, loadname
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mov edi, symbolsfile
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push edi
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@@:
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lodsb
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stosb
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test al, al
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jnz @b
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lea ecx, [edi-1]
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@@:
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dec edi
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cmp edi, symbolsfile
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jb @f
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cmp byte [edi], '/'
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jz @f
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cmp byte [edi], '.'
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jnz @b
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mov ecx, edi
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@@:
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mov dword[ecx], '.dbg'
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mov byte[ecx+4], 0
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pop esi
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mov ebp, esi
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push ecx esi
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call OnLoadSymbols.silent ; Try to load .dbg file
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pop esi ecx
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xor eax, eax
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cmp [num_symbols], eax
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jne @f
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mov dword[ecx], '.map' ; If failed, try .map file too
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call OnLoadSymbols.silent
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@@:
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; now test for packed progs
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cmp [disasm_buf_size], 100h
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jz @f
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ret
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@@:
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mov esi, mxp_nrv_sig
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mov ebp, disasm_buffer
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mov edi, ebp
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push 3
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pop ecx
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repz cmpsb
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jnz .not_mxp_nrv
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cmpsb
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mov cl, mxp_nrv_sig_size-4
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repz cmpsb
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mov esi, mxp_nrv_name
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jz .packed
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.not_mxp_nrv:
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mov esi, mxp_sig
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mov edi, ebp
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mov cl, mxp_sig_size
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repz cmpsb
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mov esi, mxp_name
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jz .packed
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.not_mxp:
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mov esi, mxp_lzo_sig1
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mov edi, ebp
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mov cl, mxp_lzo_sig1_size
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repz cmpsb
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mov esi, mxp_lzo_name
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jz .packed
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mov esi, mxp_lzo_sig2
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mov edi, ebp
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mov cl, 8
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repz cmpsb
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jnz .not_mxp_lzo
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cmpsb
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mov cl, mxp_lzo_sig2_size - 9
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repz cmpsb
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mov esi, mxp_lzo_name
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jz .packed
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.not_mxp_lzo:
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mov esi, mtappack_name
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cmp dword [ebp], 0xBF5E246A
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jnz .not_mtappack
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cmp dword [ebp+8], 0xEC4E8B57
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jnz .not_mtappack1
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cmp dword [ebp+12], 0x8D5EA4F3
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jnz .not_mtappack1
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cmp byte [ebp+12h], 0xE9
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jz .packed
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.not_mtappack1:
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cmp word [ebp+8], 0xB957
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jnz .not_mtappack
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cmp dword [ebp+14], 0x575EA4F3
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jnz .not_mtappack2
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cmp byte [ebp+17h], 0xE9
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jz .packed
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.not_mtappack2:
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cmp dword [ebp+14], 0x5F8DA4F3
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jnz .not_mtappack3
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cmp word [ebp+18], 0xE9FC
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jz .packed
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.not_mtappack3:
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cmp word [ebp+14], 0xA4F3
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jnz .not_mtappack
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cmp byte [ebp+15h], 0xE9
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jz .packed
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.not_mtappack:
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ret
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.packed:
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push esi
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mov esi, aPacked1
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call put_message_nodraw
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pop esi
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call put_message_nodraw
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mov esi, aPacked2
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call put_message
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call hide_cursor
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;push 40
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;pop eax
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;push 7
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;pop ebx
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mcall 40, 7
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.wait:
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;push 10
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;pop eax
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mcall 10
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dec eax
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jz .redraw
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dec eax
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jz .key
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or eax, -1
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mcall
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.redraw:
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call draw_window
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call hide_cursor
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jmp .wait
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.key:
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mov al, 2
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mcall
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cmp ah, 'y'
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jz .yes
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cmp ah, 'Y'
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jz .yes
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cmp ah, 0xD
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jz .yes
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cmp ah, 'n'
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jz .no
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cmp ah, 'N'
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jnz .wait
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.no:
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;push 40
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;pop eax
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;mov ebx, 0x107
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mcall 40, 0x107
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call draw_cursor
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mov esi, aN_str
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jmp put_message
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.yes:
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;push 40
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;pop eax
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;mov ebx, 0x107
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mcall 40, 0x107
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call draw_cursor
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mov esi, aY_str
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call put_message
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call OnUnpack
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ret
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;-----------------------------------------------------------------------------
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; Searching signatures
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mxp_nrv_sig:
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xor eax, eax
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mov ecx, 0x95 ; 0xA1 for programs with parameters
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mov [eax], ecx
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add ecx, [eax+24h]
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push 40h
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pop esi
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mov edi, [eax+20h]
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push edi
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rep movsb
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jmp dword [esp]
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pop esi
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add esi, [eax]
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xor edi, edi
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mxp_nrv_sig_size = $ - mxp_nrv_sig
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mxp_sig:
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mov ecx, 1CBh
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push 46h
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pop esi
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mov edi, [20h]
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rep movsb
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mov ecx, [24h]
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rep movsb
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jmp dword [20h]
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mov eax, [20h]
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add eax, 1CBh
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push eax
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push dword [24h]
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push 0
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push 8
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call $+0x25
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mxp_sig_size = $ - mxp_sig
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mxp_lzo_sig1:
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xor eax, eax
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mov ebp, 0FFh
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mov ecx, 175h
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mov [eax], ecx
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add ecx, [eax+24h]
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push 45h
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pop esi
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mov edi, [eax+20h]
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push edi
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rep movsb
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jmp dword [esp]
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pop ebx
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add ebx, [eax]
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xor edi, edi
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cmp byte [ebx], 11h
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jbe $+0x1A
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mxp_lzo_sig1_size = $ - mxp_lzo_sig1
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mxp_lzo_sig2:
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xor eax, eax
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mov ebp, 0FFh
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mov ecx, 188h ; or 177h
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mov [eax], ecx
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add ecx, [eax+24h]
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push 44h
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pop esi
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mov edi, [eax+20h]
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rep movsb
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jmp dword [eax+20h]
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mov ebx, [eax+20h]
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add ebx, [eax]
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mxp_lzo_sig2_size = $ - mxp_lzo_sig2
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;-----------------------------------------------------------------------------
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; Reload executable event
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OnReload:
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cmp [debuggee_pid], 0
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jnz terminate_reload
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mov esi, need_debuggee
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cmp byte [loadname], 0
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jnz do_reload
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jz put_message
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; TODO: make it local
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terminate_reload:
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mov [bReload], 1
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;-----------------------------------------------------------------------------
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; Terminate process event
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OnTerminate:
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;mov ecx, [debuggee_pid]
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;push 8
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;pop ebx
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;push 69
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;pop eax
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mcall 69, 8, [debuggee_pid]
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ret
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;-----------------------------------------------------------------------------
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; Suspend process event
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AfterSuspend:
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mov [bSuspended], 1
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call get_new_context
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call get_dump
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call redraw_title
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call draw_registers.redraw
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call draw_dump.redraw
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call update_disasm_eip
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ret
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OnSuspend:
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;mov ecx, [debuggee_pid]
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;push 4
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;pop ebx
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;push 69
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;pop eax
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mcall 69, 4, [debuggee_pid]
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call AfterSuspend
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mov esi, aSuspended
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jmp put_message
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;-----------------------------------------------------------------------------
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; Resume process event
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DoResume:
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;mov ecx, [debuggee_pid]
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;push 5
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;pop ebx
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;push 69
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;pop eax
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mcall 69, 5, [debuggee_pid]
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mov [bSuspended], 0
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ret
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OnResume:
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mov esi, [curarg]
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cmp byte [esi], 0
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jz GoOn
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call calc_expression
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jc .ret
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mov eax, ebp
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push eax
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call find_enabled_breakpoint
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pop eax
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jz GoOn
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mov bl, 5 ; valid enabled one-shot
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call add_breakpoint
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jnc GoOn
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mov esi, aBreakpointLimitExceeded
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|
call put_message
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|
|
.ret:
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ret
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|
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GoOn:
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|
; test for enabled breakpoint at eip
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|
mov eax, [_eip]
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|
call find_enabled_breakpoint
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|
jnz .nobreak
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|
; temporarily disable breakpoint, make step, enable breakpoint, continue
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inc eax
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|
mov [temp_break], eax
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|
mov [bAfterGo], 1
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|
dec eax
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|
call disable_breakpoint
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|
call get_context
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|
or byte [_eflags+1], 1 ; set TF
|
|
call set_context
|
|
and byte [_eflags+1], not 1
|
|
call DoResume
|
|
ret
|
|
|
|
.nobreak:
|
|
call DoResume
|
|
call redraw_title
|
|
call draw_registers.redraw
|
|
call draw_dump.redraw
|
|
ret
|
|
|
|
;-----------------------------------------------------------------------------
|
|
; Detach process event
|
|
|
|
OnDetach:
|
|
;mov ecx, [debuggee_pid]
|
|
;push 3
|
|
;pop ebx
|
|
;push 69
|
|
;pop eax
|
|
mcall 69, 3, [debuggee_pid]
|
|
and [debuggee_pid], 0
|
|
call redraw_title
|
|
call draw_registers.redraw
|
|
call draw_dump.redraw
|
|
call free_symbols
|
|
mov esi, aContinued
|
|
jmp put_message
|
|
|
|
after_go_exception:
|
|
push eax
|
|
mov eax, [temp_break]
|
|
dec eax
|
|
push esi
|
|
call enable_breakpoint
|
|
; in any case, clear TF and RF
|
|
call get_new_context
|
|
and [_eflags], not 10100h ; clear TF,RF
|
|
call set_context
|
|
xor edx, edx
|
|
mov [temp_break], edx
|
|
xchg dl, [bAfterGo]
|
|
pop esi
|
|
pop eax
|
|
cmp dl, 2
|
|
jnz @f
|
|
lodsd
|
|
push esi
|
|
call get_dump
|
|
jmp exception.done
|
|
|
|
@@:
|
|
test eax, eax
|
|
jz .notint1
|
|
; if exception is result of single step, simply ignore it and continue
|
|
test dword [esi], 0xF
|
|
jnz dbgmsgstart.5
|
|
lodsd
|
|
push esi
|
|
mov esi, oldcontext
|
|
mov edi, context
|
|
mov ecx, 28h/4
|
|
rep movsd
|
|
call DoResume
|
|
jmp dbgmsgend
|
|
|
|
.notint1:
|
|
; in other case, work as without temp_break
|
|
lodsd
|
|
push esi
|
|
push eax
|
|
jmp exception.4
|
|
|
|
.notour:
|
|
|
|
; TODO: split it out
|
|
debugmsg:
|
|
neg [dbgbufsize]
|
|
mov esi, dbgbuf
|
|
|
|
; TODO: make it local
|
|
dbgmsgstart:
|
|
lodsd
|
|
; push eax esi
|
|
; push dword [esi]
|
|
; mov esi, dbgmsg_str
|
|
; call put_message_nodraw
|
|
; pop esi eax
|
|
add esi, 4
|
|
dec eax
|
|
jz exception
|
|
dec eax
|
|
jz terminated
|
|
mov [bSuspended], 1
|
|
cmp [bAfterGo], 0
|
|
jnz after_go_exception
|
|
push esi
|
|
call get_new_context
|
|
and [_eflags], not 10100h ; clear TF,RF
|
|
call set_context
|
|
pop esi
|
|
|
|
; TODO: WTF? Need for meaning label names
|
|
.5:
|
|
push esi
|
|
call get_dump
|
|
pop esi
|
|
lodsd
|
|
xor ecx, ecx
|
|
|
|
.6:
|
|
bt eax, ecx
|
|
jnc .7
|
|
mov ebx, [drx_break+ecx*4]
|
|
test ebx, ebx
|
|
jz .7
|
|
pushad
|
|
dec ebx
|
|
push ebx
|
|
mov esi, aBreakStop
|
|
call put_message_nodraw
|
|
popad
|
|
|
|
.7:
|
|
inc ecx
|
|
cmp cl, 4
|
|
jb .6
|
|
push esi
|
|
jmp exception.done_draw
|
|
|
|
; TODO: make it local
|
|
terminated:
|
|
push esi
|
|
mov esi, terminated_msg
|
|
call put_message
|
|
and [debuggee_pid], 0
|
|
and [temp_break], 0
|
|
mov [bAfterGo], 0
|
|
xor eax, eax
|
|
mov ecx, breakpoints_n*6/4+4
|
|
mov edi, breakpoints
|
|
rep stosd
|
|
cmp [bReload], 1
|
|
sbb [bReload], -1
|
|
jnz exception.done
|
|
call free_symbols
|
|
jmp exception.done
|
|
|
|
exception:
|
|
mov [bSuspended], 1
|
|
cmp [bAfterGo], 0
|
|
jnz after_go_exception
|
|
lodsd
|
|
push esi
|
|
push eax
|
|
call get_new_context
|
|
and [_eflags], not 10100h ; clear TF,RF
|
|
call set_context
|
|
|
|
; TODO: fix for useful name
|
|
.4:
|
|
call get_dump
|
|
pop eax
|
|
; int3 command generates exception 0D, #GP
|
|
push eax
|
|
cmp al, 0Dh
|
|
jnz .notdbg
|
|
; check for 0xCC byte at eip
|
|
push 0
|
|
;push 69
|
|
;pop eax
|
|
;push 6
|
|
;pop ebx
|
|
;mov ecx, [debuggee_pid]
|
|
;mov edi, esp
|
|
;mov esi, [_eip]
|
|
;push 1
|
|
;pop edx
|
|
mcall 69, 6, [debuggee_pid], 1, [_eip], esp
|
|
pop eax
|
|
cmp al, 0xCC
|
|
jnz .notdbg
|
|
; this is either dbg breakpoint or int3 cmd in debuggee
|
|
mov eax, [_eip]
|
|
call find_enabled_breakpoint
|
|
jnz .user_int3
|
|
; dbg breakpoint; clear if one-shot
|
|
pop ecx
|
|
push eax
|
|
mov esi, aBreakStop
|
|
test byte [edi+4], 4
|
|
jz .put_msg_eax
|
|
pop ecx
|
|
call clear_breakpoint
|
|
jmp .done
|
|
|
|
.user_int3:
|
|
mov eax, [_eip]
|
|
inc [_eip]
|
|
pop ecx
|
|
push eax
|
|
call set_context
|
|
mov esi, aUserBreak
|
|
jmp .put_msg_eax
|
|
|
|
.notdbg:
|
|
mov esi, aException
|
|
|
|
.put_msg_eax:
|
|
call put_message_nodraw
|
|
|
|
.done_draw:
|
|
call draw_messages
|
|
|
|
.done:
|
|
;push 18
|
|
;pop eax
|
|
;push 3
|
|
;pop ebx
|
|
;mov ecx, [dbgwnd]
|
|
mcall 18, 3, [dbgwnd] ; activate dbg window
|
|
call redraw_title
|
|
call draw_registers.redraw
|
|
call draw_dump.redraw
|
|
call update_disasm_eip
|
|
|
|
dbgmsgend:
|
|
pop esi
|
|
mov ecx, [dbgbuflen]
|
|
add ecx, dbgbuf
|
|
cmp esi, ecx
|
|
jnz dbgmsgstart
|
|
and [dbgbuflen], 0
|
|
neg [dbgbufsize]
|
|
cmp [bReload], 2
|
|
jnz @f
|
|
mov [bReload], 0
|
|
call do_reload
|
|
|
|
@@:
|
|
jmp waitevent
|
|
|
|
; TODO: make it local
|
|
F7:
|
|
cmp [debuggee_pid], 0
|
|
jz .no
|
|
call OnStep
|
|
|
|
.no:
|
|
jmp waitevent
|
|
|
|
; TODO: make it local
|
|
F8:
|
|
cmp [debuggee_pid], 0
|
|
jz F7.no
|
|
call OnProceed
|
|
jmp F7.no
|
|
|
|
;-----------------------------------------------------------------------------
|
|
; Step execution event
|
|
|
|
;Here we get [<number>] argument at do step <number> times
|
|
OnStepMultiple:
|
|
cmp [bSuspended], 0
|
|
jz OnStep.running
|
|
mov [step_num], 1
|
|
mov esi, [curarg]
|
|
test esi, esi
|
|
jz .do
|
|
cmp byte [esi], 0
|
|
jz .do
|
|
call get_hex_number
|
|
jc .ret
|
|
cmp eax, 0 ; check if lesser or equal than 0
|
|
jle .ret
|
|
mov [step_num], eax
|
|
.do:
|
|
call OnStep
|
|
dec [step_num]
|
|
jnz .do
|
|
.ret:
|
|
ret
|
|
|
|
OnStep:
|
|
cmp [bSuspended], 0
|
|
jz .running
|
|
call get_context
|
|
or byte [_eflags+1], 1 ; set TF
|
|
call set_context
|
|
and byte [_eflags+1], not 1
|
|
; if instruction at eip is "int xx", set one-shot breakpoint immediately after
|
|
mov eax, [_eip]
|
|
call find_enabled_breakpoint
|
|
jnz @f
|
|
cmp byte [edi+5], 0xCD
|
|
jz .int
|
|
|
|
@@:
|
|
push 0
|
|
;push 69
|
|
;pop eax
|
|
;push 6
|
|
;pop ebx
|
|
;mov ecx, [debuggee_pid]
|
|
;push 3
|
|
;pop edx
|
|
;mov edi, esp
|
|
;mov esi, [_eip]
|
|
mcall 69, 6, [debuggee_pid], 3, [_eip], esp
|
|
cmp eax, edx
|
|
pop eax
|
|
jnz .doit
|
|
cmp al, 0xCD
|
|
jz .int
|
|
cmp ax, 0x050F
|
|
jz .syscall
|
|
cmp ax, 0x340F
|
|
jz .sysenter
|
|
|
|
; resume process
|
|
.doit:
|
|
call GoOn
|
|
cmp [bAfterGo], 0
|
|
jz @f
|
|
mov [bAfterGo], 2
|
|
|
|
@@:
|
|
ret
|
|
|
|
; return address is [ebp-4]
|
|
.sysenter:
|
|
push 0
|
|
;push 69
|
|
;pop eax
|
|
inc edx ; read 4 bytes
|
|
mov esi, [_ebp]
|
|
sub esi, 4
|
|
mcall 69
|
|
cmp eax, edx
|
|
pop eax
|
|
jnz .syscall
|
|
push eax
|
|
and byte [_eflags+1], not 1
|
|
call set_context
|
|
pop eax
|
|
jmp @f
|
|
|
|
.syscall:
|
|
and byte [_eflags+1], not 1 ; clear TF - avoid system halt (!)
|
|
call set_context
|
|
|
|
.int:
|
|
mov eax, [_eip]
|
|
inc eax
|
|
inc eax
|
|
|
|
@@:
|
|
push eax
|
|
call find_enabled_breakpoint
|
|
pop eax
|
|
jz .doit
|
|
; there is no enabled breakpoint yet; set temporary breakpoint
|
|
mov bl, 5
|
|
call add_breakpoint
|
|
jmp .doit
|
|
|
|
.running:
|
|
mov esi, aRunningErr
|
|
jmp put_message
|
|
|
|
;-----------------------------------------------------------------------------
|
|
; Proceed process event
|
|
|
|
OnProceed:
|
|
cmp [bSuspended], 0
|
|
jz OnStep.running
|
|
cmp [proc_num], 0
|
|
jg .procone
|
|
mov esi, [curarg]
|
|
cmp esi, 0
|
|
jz .procone
|
|
cmp byte [esi], 0
|
|
jz .procone
|
|
call get_hex_number
|
|
jc .ret
|
|
cmp eax, 0 ; check if lesser than 0
|
|
jle .ret
|
|
mov [proc_num], eax
|
|
mov [curarg], 0
|
|
|
|
.procone:
|
|
mov esi, [_eip]
|
|
|
|
@@:
|
|
call get_byte_nobreak
|
|
jc OnStep
|
|
inc esi
|
|
; skip prefixes
|
|
call is_prefix
|
|
jz @b
|
|
cmp al, 0xE8 ; call
|
|
jnz @f
|
|
add esi, 4
|
|
jmp .doit
|
|
|
|
; A4,A5 = movs; A6,A7 = cmps
|
|
@@:
|
|
cmp al, 0xA4
|
|
jb @f
|
|
cmp al, 0xA8
|
|
jb .doit
|
|
|
|
; AA,AB = stos; AC,AD = lods; AE,AF = scas
|
|
@@:
|
|
cmp al, 0xAA
|
|
jb @f
|
|
cmp al, 0xB0
|
|
jb .doit
|
|
|
|
; E0 = loopnz; E1 = loopz; E2 = loop
|
|
@@:
|
|
cmp al, 0xE0
|
|
jb .noloop
|
|
cmp al, 0xE2
|
|
ja .noloop
|
|
inc esi
|
|
jmp .doit
|
|
|
|
; FF /2 = call
|
|
.noloop:
|
|
cmp al, 0xFF
|
|
jnz OnStep
|
|
call get_byte_nobreak
|
|
jc OnStep
|
|
inc esi
|
|
mov cl, al
|
|
and al, 00111000b
|
|
cmp al, 00010000b
|
|
jnz OnStep
|
|
; skip instruction
|
|
mov al, cl
|
|
and eax, 7
|
|
shr cl, 6
|
|
jz .mod0
|
|
jp .doit
|
|
cmp al, 4
|
|
jnz @f
|
|
inc esi
|
|
|
|
@@:
|
|
inc esi
|
|
dec cl
|
|
jz @f
|
|
add esi, 3
|
|
|
|
@@:
|
|
jmp .doit
|
|
|
|
.mod0:
|
|
cmp al, 4
|
|
jnz @f
|
|
call get_byte_nobreak
|
|
jc OnStep
|
|
inc esi
|
|
and al, 7
|
|
|
|
@@:
|
|
cmp al, 5
|
|
jnz .doit
|
|
add esi, 4
|
|
|
|
.doit:
|
|
; insert one-shot breakpoint at esi and resume
|
|
call get_byte_nobreak
|
|
jc OnStep
|
|
mov eax, esi
|
|
call find_enabled_breakpoint
|
|
jz @f
|
|
mov eax, esi
|
|
mov bl, 5
|
|
call add_breakpoint
|
|
jmp OnStep.doit
|
|
|
|
@@:
|
|
mov eax, [proc_num]
|
|
dec eax
|
|
cmp eax, 0
|
|
jle .ret
|
|
mov [proc_num], eax
|
|
jmp .procone
|
|
|
|
.ret:
|
|
mov [proc_num], 0
|
|
ret
|
|
|
|
;-----------------------------------------------------------------------------
|
|
; Read next byte of machine code
|
|
|
|
get_byte_nobreak:
|
|
mov eax, esi
|
|
call find_enabled_breakpoint
|
|
jnz .nobreak
|
|
mov al, [edi+5]
|
|
clc
|
|
ret
|
|
|
|
.nobreak:
|
|
;push 69
|
|
;pop eax
|
|
;push 6
|
|
;pop ebx
|
|
;mov ecx, [debuggee_pid]
|
|
xor edx, edx
|
|
push edx
|
|
inc edx
|
|
mov edi, esp
|
|
mcall 69, 6, [debuggee_pid]
|
|
dec eax
|
|
clc
|
|
jz @f
|
|
stc
|
|
|
|
@@:
|
|
pop eax
|
|
ret
|
|
|
|
include 'parser.inc'
|
|
|
|
;-----------------------------------------------------------------------------
|
|
; Calculate expression event
|
|
|
|
OnCalc:
|
|
mov esi, [curarg]
|
|
call calc_expression
|
|
jc .ret
|
|
push ebp
|
|
mov esi, calc_string
|
|
call put_message_nodraw
|
|
jmp draw_messages
|
|
|
|
.ret:
|
|
ret
|
|
|
|
;-----------------------------------------------------------------------------
|
|
; Dump memory event
|
|
|
|
OnDump:
|
|
mov esi, [curarg]
|
|
cmp byte [esi], 0
|
|
jnz .param
|
|
add [dumppos], dump_height*10h
|
|
jmp .doit
|
|
|
|
.param:
|
|
call calc_expression
|
|
jc .ret
|
|
mov [dumppos], ebp
|
|
|
|
.doit:
|
|
call get_dump
|
|
call draw_dump.redraw
|
|
|
|
.ret:
|
|
ret
|
|
|
|
;-----------------------------------------------------------------------------
|
|
; Dissassemble block of executable event
|
|
|
|
OnUnassemble:
|
|
mov esi, [curarg]
|
|
cmp byte [esi], 0
|
|
jnz .param
|
|
mov eax, [disasm_start_pos]
|
|
mov ecx, disasm_height
|
|
mov [disasm_cur_pos], eax
|
|
|
|
.l:
|
|
mov eax, [disasm_cur_pos]
|
|
call find_symbol
|
|
jc @f
|
|
dec ecx
|
|
jz .m
|
|
|
|
@@:
|
|
push ecx
|
|
call disasm_instr
|
|
pop ecx
|
|
jc .err
|
|
loop .l
|
|
|
|
.m:
|
|
mov eax, [disasm_cur_pos]
|
|
jmp .doit
|
|
|
|
.param:
|
|
call calc_expression
|
|
jc .ret
|
|
mov eax, ebp
|
|
|
|
.doit:
|
|
push eax
|
|
push [disasm_start_pos]
|
|
mov [disasm_start_pos], eax
|
|
call update_disasm
|
|
pop [disasm_start_pos]
|
|
pop eax
|
|
cmp [disasm_cur_str], 0
|
|
jz @f
|
|
mov [disasm_start_pos], eax
|
|
|
|
.ret:
|
|
ret
|
|
|
|
@@:
|
|
call update_disasm
|
|
|
|
.err:
|
|
mov esi, aInvAddr
|
|
jmp put_message
|
|
|
|
;-----------------------------------------------------------------------------
|
|
; Access to register value event
|
|
|
|
OnReg:
|
|
mov esi, [curarg]
|
|
call get_arg.skip_spaces
|
|
call find_reg
|
|
jnc @f
|
|
|
|
.err:
|
|
mov esi, RSyntax
|
|
jmp put_message
|
|
|
|
@@:
|
|
call get_arg.skip_spaces
|
|
test al, al
|
|
jz .err
|
|
cmp al, '='
|
|
jnz @f
|
|
inc esi
|
|
call get_arg.skip_spaces
|
|
test al, al
|
|
jz .err
|
|
|
|
@@:
|
|
push edi
|
|
call calc_expression
|
|
pop edi
|
|
jc .ret
|
|
; now edi=register id, ebp=value
|
|
cmp [bSuspended], 0
|
|
mov esi, aRunningErr
|
|
jz put_message
|
|
xchg eax, ebp
|
|
cmp edi, 24
|
|
jz .eip
|
|
sub edi, 4
|
|
jb .8lo
|
|
sub edi, 4
|
|
jb .8hi
|
|
sub edi, 8
|
|
jb .16
|
|
mov [_eax+edi*4], eax
|
|
jmp .ret
|
|
|
|
.16:
|
|
mov word [_eax+(edi+8)*4], ax
|
|
jmp .ret
|
|
|
|
.8lo:
|
|
mov byte [_eax+(edi+4)*4], al
|
|
jmp .ret
|
|
|
|
.8hi:
|
|
mov byte [_eax+(edi+4)*4+1], al
|
|
jmp .ret
|
|
|
|
.eip:
|
|
mov [_eip], eax
|
|
call update_disasm_eip
|
|
|
|
.ret:
|
|
call set_context
|
|
jmp draw_registers.redraw
|
|
|
|
;-----------------------------------------------------------------------------
|
|
; Breakpoints manipulation
|
|
OnBp:
|
|
mov esi, [curarg]
|
|
call calc_expression
|
|
jc .ret
|
|
xchg eax, ebp
|
|
push eax
|
|
call find_breakpoint
|
|
inc eax
|
|
pop eax
|
|
jz .notfound
|
|
mov esi, aDuplicateBreakpoint
|
|
jmp .sayerr
|
|
|
|
.notfound:
|
|
mov bl, 1
|
|
call add_breakpoint
|
|
jnc .ret
|
|
mov esi, aBreakpointLimitExceeded
|
|
|
|
.sayerr:
|
|
call put_message
|
|
|
|
.ret:
|
|
jmp draw_disasm
|
|
|
|
OnBpmb:
|
|
mov dh, 0011b
|
|
jmp DoBpm
|
|
|
|
OnBpmw:
|
|
mov dh, 0111b
|
|
jmp DoBpm
|
|
|
|
OnBpmd:
|
|
mov dh, 1111b
|
|
|
|
DoBpm:
|
|
mov esi, [curarg]
|
|
cmp byte [esi], 'w'
|
|
jnz @f
|
|
and dh, not 2
|
|
inc esi
|
|
|
|
@@:
|
|
push edx
|
|
call calc_expression
|
|
pop edx
|
|
jnc @f
|
|
ret
|
|
|
|
; ebp = expression, dh = flags
|
|
@@:
|
|
movzx eax, dh
|
|
shr eax, 2
|
|
test ebp, eax
|
|
jz @f
|
|
mov esi, aUnaligned
|
|
jmp put_message
|
|
|
|
@@:
|
|
mov eax, ebp
|
|
mov bl, 0Bh
|
|
call add_breakpoint
|
|
jnc @f
|
|
mov esi, aBreakpointLimitExceeded
|
|
jmp put_message
|
|
|
|
; now find index
|
|
@@:
|
|
push eax
|
|
xor ecx, ecx
|
|
|
|
.l1:
|
|
cmp [drx_break+ecx*4], 0
|
|
jnz .l2
|
|
;push 69
|
|
;pop eax
|
|
push ecx
|
|
mov dl, cl
|
|
;mov ecx, [debuggee_pid]
|
|
mov esi, ebp
|
|
;push 9
|
|
;pop ebx
|
|
mcall 69, 9, [debuggee_pid]
|
|
test eax, eax
|
|
jz .ok
|
|
pop ecx
|
|
|
|
.l2:
|
|
inc ecx
|
|
cmp ecx, 4
|
|
jb .l1
|
|
pop eax
|
|
call clear_breakpoint
|
|
mov esi, aBreakpointLimitExceeded
|
|
jmp put_message
|
|
|
|
.ok:
|
|
pop ecx
|
|
pop eax
|
|
and byte [edi], not 2 ; breakpoint is enabled
|
|
shl dl, 6
|
|
or dl, dh
|
|
mov byte [edi+1], dl
|
|
inc eax
|
|
mov [drx_break+ecx*4], eax
|
|
ret
|
|
|
|
OnBc:
|
|
mov esi, [curarg]
|
|
|
|
@@:
|
|
call get_hex_number
|
|
jc OnBp.ret
|
|
call clear_breakpoint
|
|
jmp @b
|
|
|
|
OnBd:
|
|
mov esi, [curarg]
|
|
|
|
@@:
|
|
call get_hex_number
|
|
jc OnBp.ret
|
|
call disable_breakpoint
|
|
jmp @b
|
|
|
|
OnBe:
|
|
mov esi, [curarg]
|
|
|
|
@@:
|
|
call get_hex_number
|
|
jc OnBp.ret
|
|
push eax
|
|
call find_enabled_breakpoint
|
|
pop eax
|
|
jz .err
|
|
call enable_breakpoint
|
|
jmp @b
|
|
|
|
.err:
|
|
mov esi, OnBeErrMsg
|
|
jmp put_message
|
|
|
|
; TODO: split it out in parser.inc
|
|
get_hex_number:
|
|
call get_arg.skip_spaces
|
|
xor ecx, ecx
|
|
xor edx, edx
|
|
|
|
@@:
|
|
lodsb
|
|
call is_hex_digit
|
|
jc .ret
|
|
shl edx, 4
|
|
or dl, al
|
|
inc ecx
|
|
jmp @b
|
|
|
|
.ret:
|
|
dec esi
|
|
cmp ecx, 1
|
|
xchg eax, edx
|
|
ret
|
|
|
|
;-----------------------------------------------------------------------------
|
|
; Breakpoints list event
|
|
|
|
OnBl:
|
|
mov esi, [curarg]
|
|
cmp byte [esi], 0
|
|
jz .listall
|
|
call get_hex_number
|
|
jc .ret
|
|
cmp eax, breakpoints_n
|
|
jae .err
|
|
push eax
|
|
add eax, eax
|
|
lea edi, [breakpoints + eax + eax*2]
|
|
pop eax
|
|
test byte [edi+4], 1
|
|
jz .err
|
|
call show_break_info
|
|
|
|
.ret:
|
|
ret
|
|
|
|
.err:
|
|
mov esi, aInvalidBreak
|
|
jmp put_message
|
|
|
|
.listall:
|
|
mov edi, breakpoints
|
|
xor eax, eax
|
|
|
|
@@:
|
|
test byte [edi+4], 1
|
|
jz .cont
|
|
push edi eax
|
|
call show_break_info
|
|
pop eax edi
|
|
|
|
.cont:
|
|
add edi, 6
|
|
inc eax
|
|
cmp eax, breakpoints_n
|
|
jb @b
|
|
ret
|
|
|
|
;-----------------------------------------------------------------------------
|
|
|
|
show_break_info:
|
|
push edi
|
|
test byte [edi+4], 8
|
|
jnz .dr
|
|
push dword [edi]
|
|
push eax
|
|
mov esi, aBreakNum
|
|
call put_message_nodraw
|
|
jmp .cmn
|
|
|
|
.dr:
|
|
push eax
|
|
mov esi, aMemBreak1
|
|
call put_message_nodraw
|
|
pop edi
|
|
push edi
|
|
mov esi, aMemBreak2
|
|
test byte [edi+5], 2
|
|
jz @f
|
|
mov esi, aMemBreak3
|
|
|
|
@@:
|
|
call put_message_nodraw
|
|
pop edi
|
|
push edi
|
|
mov esi, aMemBreak6
|
|
test byte [edi+5], 8
|
|
jnz @f
|
|
mov esi, aMemBreak5
|
|
test byte [edi+5], 4
|
|
jnz @f
|
|
mov esi, aMemBreak4
|
|
|
|
@@:
|
|
call put_message_nodraw
|
|
pop edi
|
|
push edi
|
|
push dword [edi]
|
|
mov esi, aMemBreak7
|
|
call put_message_nodraw
|
|
|
|
.cmn:
|
|
pop edi
|
|
test byte [edi+4], 2
|
|
jz @f
|
|
push edi
|
|
mov esi, aDisabled
|
|
call put_message_nodraw
|
|
pop edi
|
|
|
|
@@:
|
|
test byte [edi+4], 4
|
|
jz @f
|
|
mov esi, aOneShot
|
|
call put_message_nodraw
|
|
|
|
@@:
|
|
mov esi, newline
|
|
jmp put_message
|
|
|
|
;-----------------------------------------------------------------------------
|
|
; Add breakpoint
|
|
; in: EAX = address; BL = flags
|
|
; out: CF = 1 => error
|
|
; CF = 0 and EAX = breakpoint number
|
|
|
|
add_breakpoint:
|
|
xor ecx, ecx
|
|
mov edi, breakpoints
|
|
|
|
@@:
|
|
test byte [edi+4], 1
|
|
jz .found
|
|
add edi, 6
|
|
inc ecx
|
|
cmp ecx, breakpoints_n
|
|
jb @b
|
|
stc
|
|
ret
|
|
|
|
.found:
|
|
stosd
|
|
xchg eax, ecx
|
|
mov [edi], bl
|
|
test bl, 2
|
|
jnz @f
|
|
or byte [edi], 2
|
|
push eax
|
|
call enable_breakpoint
|
|
pop eax
|
|
|
|
@@:
|
|
clc
|
|
ret
|
|
|
|
;-----------------------------------------------------------------------------
|
|
; Remove breakpoint
|
|
|
|
clear_breakpoint:
|
|
cmp eax, breakpoints_n
|
|
jae .ret
|
|
mov ecx, 4
|
|
inc eax
|
|
|
|
.1:
|
|
cmp [drx_break-4+ecx*4], eax
|
|
jnz @f
|
|
and [drx_break-4+ecx*4], 0
|
|
|
|
@@:
|
|
loop .1
|
|
dec eax
|
|
push eax
|
|
add eax, eax
|
|
lea edi, [breakpoints + eax + eax*2 + 4]
|
|
test byte [edi], 1
|
|
pop eax
|
|
jz .ret
|
|
push edi
|
|
call disable_breakpoint
|
|
pop edi
|
|
mov byte [edi], 0
|
|
|
|
.ret:
|
|
ret
|
|
|
|
;-----------------------------------------------------------------------------
|
|
; Disable breakpoint
|
|
|
|
disable_breakpoint:
|
|
cmp eax, breakpoints_n
|
|
jae .ret
|
|
add eax, eax
|
|
lea edi, [breakpoints + eax + eax*2 + 5]
|
|
test byte [edi-1], 1
|
|
jz .ret
|
|
test byte [edi-1], 2
|
|
jnz .ret
|
|
or byte [edi-1], 2
|
|
test byte [edi-1], 8
|
|
jnz .dr
|
|
push esi
|
|
;push 7
|
|
;pop ebx
|
|
;push 69
|
|
;pop eax
|
|
;mov ecx, [debuggee_pid]
|
|
;xor edx, edx
|
|
;inc edx
|
|
;mov esi, [edi-5]
|
|
mcall 69, 7, [debuggee_pid], 1, [edi-5]
|
|
pop esi
|
|
|
|
.ret:
|
|
ret
|
|
|
|
.dr:
|
|
mov dl, [edi]
|
|
shr dl, 6
|
|
mov dh, 80h
|
|
;push 69
|
|
;pop eax
|
|
;push 9
|
|
;pop ebx
|
|
;mov ecx, [debuggee_pid]
|
|
mcall 69, 9, [debuggee_pid]
|
|
ret
|
|
|
|
;-----------------------------------------------------------------------------
|
|
; Enable breakpoint
|
|
|
|
enable_breakpoint:
|
|
push esi
|
|
cmp eax, breakpoints_n
|
|
jae .ret
|
|
add eax, eax
|
|
lea edi, [breakpoints + eax + eax*2 + 5]
|
|
test byte [edi-1], 1
|
|
jz .ret
|
|
test byte [edi-1], 2
|
|
jz .ret
|
|
and byte [edi-1], not 2
|
|
test byte [edi-1], 8
|
|
jnz .dr
|
|
;push 6
|
|
;pop ebx
|
|
;push 69
|
|
;pop eax
|
|
;mov esi, [edi-5]
|
|
;mov ecx, [debuggee_pid]
|
|
;xor edx, edx
|
|
;inc edx
|
|
mcall 69, 6, [debuggee_pid], 1, [edi-5]
|
|
dec eax
|
|
jnz .err
|
|
;mov al, 69
|
|
push 0xCC
|
|
mov edi, esp
|
|
inc ebx
|
|
mcall 69
|
|
pop eax
|
|
|
|
.ret:
|
|
pop esi
|
|
ret
|
|
|
|
.err:
|
|
or byte [edi-1], 2
|
|
mov esi, aBreakErr
|
|
call put_message
|
|
pop esi
|
|
ret
|
|
|
|
.dr:
|
|
;push 9
|
|
;pop ebx
|
|
;push 69
|
|
;pop eax
|
|
mov esi, [edi-5]
|
|
;mov ecx, [debuggee_pid]
|
|
mov dl, [edi]
|
|
shr dl, 6
|
|
mov dh, [edi]
|
|
and dh, 0xF
|
|
mcall 69, 9, [debuggee_pid]
|
|
test eax, eax
|
|
jnz .err
|
|
pop esi
|
|
ret
|
|
|
|
;-----------------------------------------------------------------------------
|
|
; Find breakpoint
|
|
|
|
find_breakpoint:
|
|
xor ecx, ecx
|
|
xchg eax, ecx
|
|
mov edi, breakpoints
|
|
|
|
@@:
|
|
test byte [edi+4], 1
|
|
jz .cont
|
|
test byte [edi+4], 8
|
|
jnz .cont
|
|
cmp [edi], ecx
|
|
jz .found
|
|
|
|
.cont:
|
|
add edi, 6
|
|
inc eax
|
|
cmp eax, breakpoints_n
|
|
jb @b
|
|
or eax, -1
|
|
|
|
.found:
|
|
ret
|
|
|
|
;-----------------------------------------------------------------------------
|
|
;
|
|
|
|
find_enabled_breakpoint:
|
|
xor ecx, ecx
|
|
xchg eax, ecx
|
|
mov edi, breakpoints
|
|
|
|
@@:
|
|
test byte [edi+4], 1
|
|
jz .cont
|
|
test byte [edi+4], 2 or 8
|
|
jnz .cont
|
|
cmp [edi], ecx
|
|
jz .found
|
|
|
|
.cont:
|
|
add edi, 6
|
|
inc eax
|
|
cmp eax, breakpoints_n
|
|
jb @b
|
|
or eax, -1
|
|
|
|
.found:
|
|
ret
|
|
|
|
; TODO: add find_disabled_breakpoint
|
|
|
|
;-----------------------------------------------------------------------------
|
|
; Unpack executable event
|
|
|
|
OnUnpack:
|
|
; program must be loaded - checked when command was parsed
|
|
; program must be stopped
|
|
mov esi, aRunningErr
|
|
cmp [bSuspended], 0
|
|
jz put_message
|
|
; all breakpoints must be disabled
|
|
mov edi, breakpoints
|
|
|
|
@@:
|
|
test byte [edi+4], 1
|
|
jz .cont
|
|
test byte [edi+4], 2
|
|
jnz .cont
|
|
mov esi, aEnabledBreakErr
|
|
jmp put_message
|
|
|
|
.cont:
|
|
add edi, 6
|
|
cmp edi, breakpoints+breakpoints_n*6
|
|
jb @b
|
|
; ok, now do it
|
|
; set breakpoint on 0xC dword access
|
|
push 9
|
|
pop ebx
|
|
mov ecx, [debuggee_pid]
|
|
mov dx, 1111b*256
|
|
push 0xC
|
|
pop esi
|
|
|
|
@@:
|
|
;push 69
|
|
;pop eax
|
|
mcall 69
|
|
test eax, eax
|
|
jz .breakok
|
|
inc edx
|
|
cmp dl, 4
|
|
jb @b
|
|
|
|
.breakok:
|
|
call GoOn
|
|
|
|
; now wait for event
|
|
.wait:
|
|
;push 10
|
|
;pop eax
|
|
mcall 10
|
|
dec eax
|
|
jz .redraw
|
|
dec eax
|
|
jz .key
|
|
dec eax
|
|
jnz .debug
|
|
; button; we have only one button, close
|
|
or eax, -1
|
|
mcall
|
|
|
|
.redraw:
|
|
call draw_window
|
|
jmp .wait
|
|
|
|
.key:
|
|
mov al, 2
|
|
mcall
|
|
cmp ah, 3 ; Ctrl+C
|
|
jnz .wait
|
|
|
|
.userbreak:
|
|
mov esi, aInterrupted
|
|
|
|
.x1:
|
|
push edx esi
|
|
call put_message
|
|
pop esi edx
|
|
or dh, 80h
|
|
;push 69
|
|
;pop eax
|
|
;push 9
|
|
;pop ebx
|
|
;mov ecx, [debuggee_pid]
|
|
mcall 69, 9, [debuggee_pid]
|
|
cmp esi, aUnpacked
|
|
jnz OnSuspend
|
|
jmp AfterSuspend
|
|
|
|
.debug:
|
|
cmp [dbgbuflen], 4*3
|
|
jnz .notour
|
|
cmp dword [dbgbuf], 3
|
|
jnz .notour
|
|
test byte [dbgbuf+8], 1
|
|
jnz .our
|
|
|
|
.notour:
|
|
mov esi, aInterrupted
|
|
push edx
|
|
call put_message
|
|
pop edx
|
|
or dh, 80h
|
|
;push 69
|
|
;pop eax
|
|
;push 9
|
|
;pop ebx
|
|
;mov ecx, [debuggee_pid]
|
|
mcall 69, 9, [debuggee_pid]
|
|
jmp debugmsg
|
|
|
|
.our:
|
|
and [dbgbuflen], 0
|
|
push edx
|
|
call get_context
|
|
push eax
|
|
;mov al, 69
|
|
;mov bl, 6
|
|
;mov ecx, [debuggee_pid]
|
|
;mov edi, esp
|
|
;push 4
|
|
;pop edx
|
|
;push 0xC
|
|
;pop esi
|
|
mcall 69, 6, [debuggee_pid], 4, 0xC, esp
|
|
pop eax
|
|
pop edx
|
|
cmp eax, [_eip]
|
|
jz .done
|
|
call DoResume
|
|
jmp .wait
|
|
|
|
.done:
|
|
mov esi, aUnpacked
|
|
jmp .x1
|
|
|
|
;-----------------------------------------------------------------------------
|
|
; Include Symbol parser
|
|
|
|
include 'symbols.inc'
|
|
|
|
;-----------------------------------------------------------------------------
|
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; Include disassembler engine
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include 'disasm.inc'
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; DATA ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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caption_str db 'Kolibri Debugger',0
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begin_str db 'Kolibri Debugger, version 0.34',10
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db 'Hint: type "help" for help, "quit" to quit'
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newline db 10,0
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prompt db '> ',0
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help_groups:
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dd aControl, 0, 0, help_control_msg
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db 0
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dd aData, 0, 0, help_data_msg
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db 0
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dd aBreakpoints, 0, 0, help_breaks_msg
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db 0
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;-----------------------------------------------------------------------------
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; Commands format definitions
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; TODO: make it with macros
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; flags field:
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; &1: command may be called without parameters
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; &2: command may be called with parameters
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; &4: command may be called without loaded program
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; &8: command may be called with loaded program
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commands:
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dd _aH, OnHelp, HelpSyntax, HelpHelp
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db 0Fh
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dd aHelp, OnHelp, HelpSyntax, HelpHelp
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db 0Fh
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dd aQuit, OnQuit, QuitSyntax, QuitHelp
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db 0Dh
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dd aLoad, OnLoad, LoadSyntax, LoadHelp
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db 6
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dd aReload, OnReload, ReloadSyntax, ReloadHelp
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db 0Dh
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dd aTerminate, OnTerminate, TerminateSyntax, TerminateHelp
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db 9
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dd aDetach, OnDetach, DetachSyntax, DetachHelp
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db 9
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dd aSuspend, OnSuspend, SuspendSyntax, SuspendHelp
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db 9
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dd aResume, OnResume, ResumeSyntax, ResumeHelp
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db 0Bh
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dd aStep, OnStepMultiple, StepSyntax, StepHelp
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db 0Bh
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dd aProceed, OnProceed, ProceedSyntax, ProceedHelp
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db 0Bh
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dd aCalc, OnCalc, CalcSyntax, CalcHelp
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db 0Eh
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dd aDump, OnDump, DumpSyntax, DumpHelp
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db 0Bh
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dd aUnassemble, OnUnassemble, UnassembleSyntax, UnassembleHelp
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db 0Bh
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dd aBp, OnBp, BpSyntax, BpHelp
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db 0Ah
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dd aBpm, OnBpmb, BpmSyntax, BpmHelp
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db 0Ah
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dd aBpmb, OnBpmb, BpmSyntax, BpmHelp
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db 0Ah
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dd aBpmw, OnBpmw, BpmSyntax, BpmHelp
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db 0Ah
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dd aBpmd, OnBpmd, BpmSyntax, BpmHelp
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db 0Ah
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dd aBl, OnBl, BlSyntax, BlHelp
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db 0Bh
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dd aBc, OnBc, BcSyntax, BcHelp
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db 0Ah
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dd aBd, OnBd, BdSyntax, BdHelp
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db 0Ah
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dd aBe, OnBe, BeSyntax, BeHelp
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db 0Ah
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dd aReg, OnReg, RSyntax, RHelp
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db 0Ah
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dd aUnpack, OnUnpack, UnpackSyntax, UnpackHelp
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db 9
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dd aLoadSymbols, OnLoadSymbols, LoadSymbolsSyntax, LoadSymbolsHelp
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db 0Ah
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dd 0
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;-----------------------------------------------------------------------------
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; Help messages for commands groups
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aHelp db 5,'help',0
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_aH db 2,'h',0
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HelpHelp db 'Help on specified function',10
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HelpSyntax db 'Usage: h or help [group | command]',10,0
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help_msg db 'List of known command groups:',10
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db '"help control" - display list of control commands',10
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db '"help data" - display list of commands concerning data',10
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db '"help breakpoints" - display list of commands concerning breakpoints',10,0
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; Control commands group
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aControl db 8,'control',0
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help_control_msg db 'List of control commands:',10
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db 'h = help - help',10
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db 'quit - exit from debugger',10
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db 'load <name> [params] - load program for debugging',10
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db 'reload - reload debugging program',10
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db 'load-symbols <name> - load information on symbols for program',10
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db 'terminate - terminate loaded program',10
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db 'detach - detach from debugging program',10
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db 'stop - suspend execution of debugging program',10
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db 'g [<expression>] - go on (resume execution of debugging program)',10
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db 's [<num>] - program step, also <F7>',10
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db 'p [<num>] - program wide step, also <F8>',10
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db 'unpack - try to bypass unpacker code (heuristic)',10,0
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; Data commands group
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aData db 5,'data',0
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help_data_msg db 'List of data commands:',10
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db '? <expression> - calculate value of expression',10
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db 'd [<expression>] - dump data at given address',10
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db 'u [<expression>] - unassemble instructions at given address',10
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db 'r <register> <expression> or',10
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db 'r <register>=<expression> - set register value',10,0
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; Breakpoints commands group
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aBreakpoints db 12,'breakpoints',0
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help_breaks_msg db 'List of breakpoints commands:',10
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db 'bp <expression> - set breakpoint on execution',10
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db 'bpm[b|w|d] <type> <expression> - set breakpoint on memory access',10
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db 'bl [<number>] - breakpoint(s) info',10
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db 'bc <number>... - clear breakpoint',10
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db 'bd <number>... - disable breakpoint',10
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db 'be <number>... - enable breakpoint',10,0
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;-----------------------------------------------------------------------------
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; Individual command help messages
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aQuit db 5,'quit',0
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QuitHelp db 'Quit from debugger',10
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QuitSyntax db 'Usage: quit',10,0
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aLoad db 5,'load',0
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LoadHelp db 'Load program for debugging',10
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LoadSyntax db 'Usage: load <program-name> [parameters]',10,0
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aReload db 7,'reload',0
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ReloadHelp db 'Reload debugging program (restart debug session)',10
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ReloadSyntax db 'Usage: reload',10,0
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aTerminate db 10,'terminate',0
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TerminateHelp db 'Terminate debugged program',10
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TerminateSyntax db 'Usage: terminate',10,0
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aDetach db 7,'detach',0
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DetachHelp db 'Detach from debugged program',10
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DetachSyntax db 'Usage: detach',10,0
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aSuspend db 5,'stop',0
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SuspendHelp db 'Suspend execution of debugged program',10
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SuspendSyntax db 'Usage: stop',10,0
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aResume db 2,'g',0
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ResumeHelp db 'Go (resume execution of debugged program)',10
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ResumeSyntax db 'Usage: g',10
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db ' or: g <expression> - wait until specified address is reached',10,0
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aStep db 2,'s',0
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StepHelp db 'Make step in debugged program',10
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StepSyntax db 'Usage: s [<number>]',10,0
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aProceed db 2,'p',0
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ProceedHelp db 'Make wide step in debugged program (step over CALL, REPxx, LOOP)',10
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ProceedSyntax db 'Usage: p [<number>]',10,0
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aDump db 2,'d',0
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DumpHelp db 'Dump data of debugged program',10
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DumpSyntax db 'Usage: d <expression> - dump data at specified address',10
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db ' or: d - continue current dump',10,0
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aCalc db 2,'?',0
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CalcHelp db 'Calculate value of expression',10
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CalcSyntax db 'Usage: ? <expression>',10,0
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aUnassemble db 2,'u',0
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UnassembleHelp db 'Unassemble',10
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UnassembleSyntax db 'Usage: u <expression> - unassemble instructions at specified address',10
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db ' or: u - continue current unassemble screen',10,0
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aReg db 2,'r',0
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RHelp db 'Set register value',10
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RSyntax db 'Usage: r <register> <expression>',10
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db ' or: r <register>=<expression> - set value of <register> to <expression>',10,0
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aBp db 3,'bp',0
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BpHelp db 'set BreakPoint on execution',10
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BpSyntax db 'Usage: bp <expression>',10,0
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aBpm db 4,'bpm',0
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aBpmb db 5,'bpmb',0
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aBpmw db 5,'bpmw',0
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aBpmd db 5,'bpmd',0
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BpmHelp db 'set BreakPoint on Memory access',10
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db 'Maximum 4 breakpoints of this type are allowed',10
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db 'Note that for this breaks debugger is activated after access',10
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BpmSyntax db 'Usage: bpmb [w] <expression>',10
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db ' bpmw [w] <expression>',10
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db ' bpmd [w] <expression>',10
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db ' bpm is synonym for bpmd',10
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db '"w" means break only on writes (default is on read/write)',10,0
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aBl db 3,'bl',0
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BlHelp db 'Breakpoint List',10
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BlSyntax db 'Usage: bl - list all breakpoints',10
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db ' bl <number> - display info on particular breakpoint',10,0
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aBc db 3,'bc',0
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BcHelp db 'Breakpoint Clear',10
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BcSyntax db 'Usage: bc <number-list>',10
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db 'Examples: bc 2',10
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db ' bc 1 3 4 A',10,0
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aBd db 3,'bd',0
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BdHelp db 'Breakpoint Disable',10
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BdSyntax db 'Usage: bd <number-list>',10
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db 'Examples: bd 2',10
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db ' bd 1 3 4 A',10,0
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aBe db 3,'be',0
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BeHelp db 'Breakpoint Enable',10
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BeSyntax db 'Usage: be <number-list>',10
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db 'Examples: be 2',10
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db ' be 1 3 4 A',10,0
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aUnpack db 7,'unpack',0
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UnpackHelp db 'Try to bypass unpacker code',10
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UnpackSyntax db 'Usage: unpack',10,0
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aLoadSymbols db 13,'load-symbols',0
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LoadSymbolsHelp db 'Load symbolic information for executable',10
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LoadSymbolsSyntax db 'Usage: load-symbols <symbols-file-name>',10,0
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aUnknownCommand db 'Unknown command',10,0
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;-----------------------------------------------------------------------------
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; Error messages
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load_err_msg db 'Cannot load program. ',0
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unk_err_msg db 'Unknown error code -%4X',10,0
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aCannotLoadFile db 'Cannot load file. ',0
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unk_err_msg2 db 'Unknown error code %4X.',10,0
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load_err_msgs:
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dd .1, 0, .3, 0, .5, .6, 0, 0, .9, .A, 0, 0, 0, 0, 0, 0
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dd 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, .1E, .1F, .20
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.1 db 'HD undefined.',10,0
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.3 db 'Unknown FS.',10,0
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.5 db 'File not found.',10,0
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.6 db 'Unexpected EOF.',10,0
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.9 db 'FAT table corrupted.',10,0
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.A db 'Access denied.',10,0
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.1E db 'No memory.',10,0
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.1F db 'Not Menuet/Kolibri executable.',10,0
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.20 db 'Too many processes.',10,0
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load_succ_msg db 'Program loaded successfully! PID=%4X. Use "g" to run.',10,0
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need_debuggee db 'No program loaded. Use "load" command.',10,0
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aAlreadyLoaded db 'Program is already loaded. Use "terminate" or "detach" commands',10,0
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terminated_msg db 'Program terminated.',10,0
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aException db 'Debugged program caused an exception %2X. '
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aSuspended db 'Suspended',10,0
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aContinued db 'Continuing',10,0
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aRunningErr db 'Program is running',10,0
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read_mem_err db 'ERROR: cannot read process memory!!!',10,0
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aBreakpointLimitExceeded db 'Breakpoint limit exceeded',10,0
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aBreakErr db 'Cannot activate breakpoint, it will be disabled',10,0
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aDuplicateBreakpoint db 'Duplicate breakpoint',10,0
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aInvalidBreak db 'Invalid breakpoint number',10,0
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OnBeErrMsg db 'There is already enabled breakpoint on this address',10,0
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aBreakNum db '%2X: at %8X',0
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aMemBreak1 db '%2X: on ',0
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aMemBreak2 db 'read from ',0
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aMemBreak3 db 'access of ',0
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aMemBreak4 db 'byte',0
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aMemBreak5 db 'word',0
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aMemBreak6 db 'dword',0
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aMemBreak7 db ' at %8X',0
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aOneShot db ', one-shot',0
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aDisabled db ', disabled',0
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aBreakStop db 'Breakpoint #%2X',10,0
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aUserBreak db 'int3 command at %8X',10,0
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;dbgmsg_str db 'Debug message for process %4X.',10,0
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aInvAddr db 'Invalid address',10,0
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NoPrgLoaded_str db 'No program loaded'
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NoPrgLoaded_len = $ - NoPrgLoaded_str
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aRunning db 'Running'
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aPaused db 'Paused'
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aMain db '[ CPU ]'
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aSSE db '[ SSE ]'
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aAVX db '[ AVX ]'
|
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aMSR db '[ MSR ]'
|
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aPoint db 0x1C
|
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aMinus db '-'
|
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aColon db ':'
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aSpace db ' '
|
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aQuests db '??'
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aDots db '...'
|
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aParseError db 'Parse error',10,0
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aDivByZero db 'Division by 0',10,0
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calc_string db '%8X',10,0
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aNoMemory db 'No memory',10,0
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aSymbolsLoaded db 'Symbols loaded',10,0
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aUnaligned db 'Unaligned address',10,0
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aEnabledBreakErr db 'Enabled breakpoints are not allowed',10,0
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aInterrupted db 'Interrupted',10,0
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aUnpacked db 'Unpacked successful!',10,0
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aPacked1 db 'Program is probably packed with ',0
|
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aPacked2 db '.',10,'Try to unpack automatically? [y/n]: ',0
|
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aY_str db 'y',10,0
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aN_str db 'n',10,0
|
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mxp_nrv_name db 'mxp_nrv',0
|
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mxp_name db 'mxp',0
|
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mxp_lzo_name db 'mxp_lzo',0
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mtappack_name db 'mtappack',0
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flags db 'CPAZSDO'
|
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flags_bits db 0,2,4,6,7,10,11
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;-----------------------------------------------------------------------------
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; Registers strings
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regs_strs:
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db 'EAX='
|
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db 'EBX='
|
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db 'ECX='
|
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db 'EDX='
|
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db 'ESI='
|
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db 'EDI='
|
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db 'EBP='
|
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db 'ESP='
|
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db 'EIP='
|
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db 'EFLAGS='
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fpu_strs:
|
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db 'ST0='
|
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db 'ST1='
|
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db 'ST2='
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db 'ST3='
|
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db 'ST4='
|
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db 'ST5='
|
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db 'ST6='
|
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db 'ST7='
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|
|
mmx_strs:
|
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db 'MM0='
|
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db 'MM1='
|
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db 'MM2='
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db 'MM3='
|
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db 'MM4='
|
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db 'MM5='
|
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db 'MM6='
|
|
db 'MM7='
|
|
sse_strs:
|
|
db '-XMM0-'
|
|
db '-XMM1-'
|
|
db '-XMM2-'
|
|
db '-XMM3-'
|
|
db '-XMM4-'
|
|
db '-XMM5-'
|
|
db '-XMM6-'
|
|
db '-XMM7-'
|
|
avx_strs:
|
|
db '-YMM0-'
|
|
db '-YMM1-'
|
|
db '-YMM2-'
|
|
db '-YMM3-'
|
|
db '-YMM4-'
|
|
db '-YMM5-'
|
|
db '-YMM6-'
|
|
db '-YMM7-'
|
|
|
|
align 4
|
|
debuggee_pid dd 0
|
|
bSuspended db 0
|
|
bAfterGo db 0
|
|
temp_break dd 0
|
|
reg_mode db 1
|
|
_10000000 dd 10000000
|
|
|
|
include 'disasm_tbl.inc'
|
|
|
|
reg_table:
|
|
db 2,'al',0
|
|
db 2,'cl',1
|
|
db 2,'dl',2
|
|
db 2,'bl',3
|
|
db 2,'ah',4
|
|
db 2,'ch',5
|
|
db 2,'dh',6
|
|
db 2,'bh',7
|
|
db 2,'ax',8
|
|
db 2,'cx',9
|
|
db 2,'dx',10
|
|
db 2,'bx',11
|
|
db 2,'sp',12
|
|
db 2,'bp',13
|
|
db 2,'si',14
|
|
db 2,'di',15
|
|
db 3,'eax',16
|
|
db 3,'ecx',17
|
|
db 3,'edx',18
|
|
db 3,'ebx',19
|
|
db 3,'esp',20
|
|
db 3,'ebp',21
|
|
db 3,'esi',22
|
|
db 3,'edi',23
|
|
db 3,'eip',24
|
|
db 0
|
|
|
|
IncludeIGlobals
|
|
|
|
fn70_read_block:
|
|
dd 0
|
|
dq 0
|
|
dd ?
|
|
dd ?
|
|
db 0
|
|
dd ?
|
|
|
|
fn70_attr_block:
|
|
dd 5
|
|
dd 0,0,0
|
|
dd fileattr
|
|
db 0
|
|
dd ?
|
|
|
|
fn70_load_block:
|
|
dd 7
|
|
dd 1
|
|
load_params dd 0
|
|
dd 0
|
|
dd 0
|
|
i_end:
|
|
loadname:
|
|
db 0
|
|
rb 255
|
|
|
|
symbolsfile rb 260
|
|
|
|
prgname_ptr dd ?
|
|
prgname_len dd ?
|
|
|
|
IncludeUGlobals
|
|
|
|
dbgwnd dd ?
|
|
|
|
messages rb messages_height*messages_width
|
|
messages_pos dd ?
|
|
|
|
cmdline rb cmdline_width+1
|
|
cmdline_len dd ?
|
|
cmdline_pos dd ?
|
|
curarg dd ?
|
|
|
|
cmdline_prev rb cmdline_width+1
|
|
|
|
was_temp_break db ?
|
|
symbol_section db ?
|
|
|
|
dbgbufsize dd ?
|
|
dbgbuflen dd ?
|
|
dbgbuf rb 256
|
|
|
|
fileattr rb 40
|
|
|
|
;keep aligned !!!
|
|
;do not change layout !!!
|
|
|
|
align 16
|
|
needzerostart:
|
|
context:
|
|
_eip dd ?
|
|
_eflags dd ?
|
|
_eax dd ?
|
|
_ecx dd ?
|
|
_edx dd ?
|
|
_ebx dd ?
|
|
_esp dd ?
|
|
_ebp dd ?
|
|
_esi dd ?
|
|
_edi dd ?
|
|
|
|
_ctx_flags:
|
|
dd ?
|
|
dd ?
|
|
|
|
_sse_flags:
|
|
|
|
|
|
_fcw dw ?
|
|
_fsw dw ?
|
|
_ftw db ?
|
|
db ?
|
|
_fop dw ?
|
|
_fpu_ip dd ?
|
|
dw ?
|
|
dw ?
|
|
|
|
dq ?
|
|
dq ?
|
|
|
|
fpu_context:
|
|
mmx_context:
|
|
_st0:
|
|
_mm0: rq 2
|
|
_st1:
|
|
_mm1: rq 2
|
|
_st2:
|
|
_mm2: rq 2
|
|
_st3:
|
|
_mm3: rq 2
|
|
_st4:
|
|
_mm4: rq 2
|
|
_st5:
|
|
_mm5: rq 2
|
|
_st6:
|
|
_mm6: rq 2
|
|
_st7:
|
|
_mm7: rq 2
|
|
|
|
sse_context:
|
|
_xmm0 rq 2
|
|
_xmm1 rq 2
|
|
_xmm2 rq 2
|
|
_xmm3 rq 2
|
|
_xmm4 rq 2
|
|
_xmm5 rq 2
|
|
_xmm6 rq 2
|
|
_xmm7 rq 2
|
|
ctx_end:
|
|
|
|
|
|
oldcontext rb _ctx_flags-context
|
|
rd 2
|
|
rq 4
|
|
|
|
oldfpucontext:
|
|
oldmmxcontext: rb sse_context-fpu_context
|
|
oldssecontext: rb ctx_end-sse_context
|
|
|
|
if 0
|
|
avx_context:
|
|
_ymm0 dq 4 dup ?
|
|
_ymm1 dq 4 dup ?
|
|
_ymm2 dq 4 dup ?
|
|
_ymm3 dq 4 dup ?
|
|
_ymm4 dq 4 dup ?
|
|
_ymm5 dq 4 dup ?
|
|
_ymm6 dq 4 dup ?
|
|
_ymm7 dq 4 dup ?
|
|
oldavxcontext rb $-avx_context
|
|
end if
|
|
|
|
|
|
step_num dd 0
|
|
proc_num dd 0
|
|
dumpread dd ?
|
|
dumppos dd ?
|
|
dumpdata rb dump_height*10h
|
|
|
|
; breakpoint structure:
|
|
; dword +0: address
|
|
; byte +4: flags
|
|
; bit 0: 1 <=> breakpoint valid
|
|
; bit 1: 1 <=> breakpoint disabled
|
|
; bit 2: 1 <=> one-shot breakpoint
|
|
; bit 3: 1 <=> DRx breakpoint
|
|
; byte +5: overwritten byte
|
|
; for DRx breaks: flags + (index shl 6)
|
|
breakpoints_n = 256
|
|
breakpoints rb breakpoints_n*6
|
|
drx_break rd 4
|
|
|
|
disasm_buf_size dd ?
|
|
|
|
symbols dd ?
|
|
num_symbols dd ?
|
|
|
|
bReload db ?
|
|
|
|
needzeroend:
|
|
|
|
disasm_buffer rb 256
|
|
disasm_start_pos dd ?
|
|
disasm_cur_pos dd ?
|
|
disasm_cur_str dd ?
|
|
disasm_string rb 256
|
|
|
|
i_param rb 256
|
|
|
|
; stack
|
|
align 400h
|
|
rb 400h
|
|
used_mem:
|
|
|
|
; vim: ft=fasm tabstop=4
|
|
|