kolibrios-fun/kernel/trunk/fdo.inc

;
; Formatted Debug Output (FDO)
; Copyright (c) 2005-2006, mike.dld
; Created: 2005-01-29, Changed: 2006-11-10
;
; For questions and bug reports, mail to mike.dld@gmail.com
;
; Available format specifiers are: %s, %d, %u, %x (with partial width support)
;

; to be defined:
;   __DEBUG__ equ 1
;   __DEBUG_LEVEL__ equ 5

macro debug_func name {
 if used name
  name@of@func equ name
}

macro debug_beginf {
 align 4
 name@of@func:
}

debug_endf fix end if

macro DEBUGS _sign,[_str] {
 common
  local tp
  tp equ 0
  match _arg:_num,_str \{
   DEBUGS_N _sign,_num,_arg
   tp equ 1
  \}
  match =0 _arg,tp _str \{
   DEBUGS_N _sign,,_arg
  \}
}

macro DEBUGS_N _sign,_num,[_str] {
 common
  pushf
  pushad
  local ..str,..label,is_str
  is_str = 0
 forward
  if _str eqtype ''
   is_str = 1
  end if
 common
  if is_str = 1
   jmp ..label
   ..str db _str,0
   ..label:
   add  esp,4*8+4
   mov  edx,..str
   sub  esp,4*8+4
  else
   mov  edx,_str
  end if
  if ~_num eq
   if _num eqtype eax
    if _num in <eax,ebx,ecx,edx,edi,ebp,esp>
     mov esi,_num
    else if ~_num eq esi
     movzx esi,_num
    end if
   else if _num eqtype 0
    mov esi,_num
   else
    local tp
    tp equ 0
    match [_arg],_num \{
     mov esi,dword[_arg]
     tp equ 1
    \}
    match =0 =dword[_arg],tp _num \{
     mov esi,dword[_arg]
     tp equ 1
    \}
    match =0 =word[_arg],tp _num \{
     movzx esi,word[_arg]
     tp equ 1
    \}
    match =0 =byte[_arg],tp _num \{
     movzx esi,byte[_arg]
     tp equ 1
    \}
    match =0,tp \{
     'Error: specified string width is incorrect'
    \}
   end if
  else
   mov esi,0x7FFFFFFF
  end if
  call fdo_debug_outstr
  popad
  popf
}

macro DEBUGD _sign,_dec {
 local tp
 tp equ 0
 match _arg:_num,_dec \{
  DEBUGD_N _sign,_num,_arg
  tp equ 1
 \}
 match =0 _arg,tp _dec \{
  DEBUGD_N _sign,,_arg
 \}
}

macro DEBUGD_N _sign,_num,_dec {
 pushf
 pushad
 if (~_num eq)
  if (_dec eqtype eax | _dec eqtype 0)
   'Error: precision allowed only for in-memory variables'
  end if
  if (~_num in <1,2,4>)
   if _sign
    'Error: 1, 2 and 4 are only allowed for precision in %d'
   else
    'Error: 1, 2 and 4 are only allowed for precision in %u'
   end if
  end if
 end if
 if _dec eqtype eax
  if _dec in <ebx,ecx,edx,esi,edi,ebp,esp>
   mov eax,_dec
  else if ~_dec eq eax
   if _sign = 1
    movsx eax,_dec
   else
    movzx eax,_dec
   end if
  end if
 else if _dec eqtype 0
  mov eax,_dec
 else
  add esp,4*8+4
  if _num eq
   mov eax,dword _dec
  else if _num = 1
   if _sign = 1
    movsx eax,byte _dec
   else
    movzx eax,byte _dec
   end if
  else if _num = 2
   if _sign = 1
    movsx eax,word _dec
   else
    movzx eax,word _dec
   end if
  else
   mov eax,dword _dec
  end if
  sub esp,4*8+4
 end if
 mov cl,_sign
 call fdo_debug_outdec
 popad
 popf
}

macro DEBUGH _sign,_hex {
 local tp
 tp equ 0
 match _arg:_num,_hex \{
  DEBUGH_N _sign,_num,_arg
  tp equ 1
 \}
 match =0 _arg,tp _hex \{
  DEBUGH_N _sign,,_arg
 \}
}

macro DEBUGH_N _sign,_num,_hex {
 pushf
 pushad
 if (~_num eq) & (~_num in <1,2,3,4,5,6,7,8>)
  'Error: 1..8 are only allowed for precision in %x'
 end if
 if _hex eqtype eax
  if _hex in <eax,ebx,ecx,edx,esi,edi,ebp,esp>
   if ~_hex eq eax
    mov eax,_hex
   end if
  else if _hex in <ax,bx,cx,dx,si,di,bp,sp>
   if ~_hex eq ax
    movzx eax,_hex
   end if
   shl eax,16
   if (_num eq)
    mov edx,4
   end if
  else if _hex in <al,ah,bl,bh,cl,ch,dl,dh>
   if ~_hex eq al
    movzx eax,_hex
   end if
   shl eax,24
   if (_num eq)
    mov edx,2
   end if
  end if
 else if _hex eqtype 0
  mov eax,_hex
 else
  add esp,4*8+4
  mov eax,dword _hex
  sub esp,4*8+4
 end if
 if ~_num eq
  mov edx,_num
 else
  if ~_hex eqtype eax
   mov edx,8
  end if
 end if
 call fdo_debug_outhex
 popad
 popf
}

;-----------------------------------------------------------------------------

debug_func fdo_debug_outchar
debug_beginf
        pushad
        movzx   ebx,al
        mov     eax,1
        call    sys_msg_board
        popad
        ret
debug_endf

debug_func fdo_debug_outstr
debug_beginf
        mov     eax,1
  .l1:  dec     esi
        js      .l2
        movzx   ebx,byte[edx]
        or      bl,bl
        jz      .l2
        call    sys_msg_board
        inc     edx
        jmp     .l1
  .l2:  ret
debug_endf

debug_func fdo_debug_outdec
debug_beginf
        or      cl,cl
        jz      @f
        or      eax,eax
        jns     @f
        neg     eax
        push    eax
        mov     al,'-'
        call    fdo_debug_outchar
        pop     eax
    @@: push    10
        pop     ecx
        push    -'0'
  .l1:  xor     edx,edx
        div     ecx
        push    edx
        test    eax,eax
        jnz     .l1
  .l2:  pop     eax
        add     al,'0'
        jz      .l3
        call    fdo_debug_outchar
        jmp     .l2
  .l3:  ret
debug_endf

debug_func fdo_debug_outhex
  __fdo_hexdigits db '0123456789ABCDEF'
debug_beginf
        mov     cl,dl
        neg     cl
        add     cl,8
        shl     cl,2
        rol     eax,cl
  .l1:  rol     eax,4
        push    eax
        and     eax,0x0000000F
        mov     al,[__fdo_hexdigits+eax]
        call    fdo_debug_outchar
        pop     eax
        dec     edx
        jnz     .l1
        ret
debug_endf

;-----------------------------------------------------------------------------

macro DEBUGF _level,_format,[_arg] {
 common
 if __DEBUG__ = 1 & _level >= __DEBUG_LEVEL__
  local ..f1,f2,a1,a2,c1,c2,c3,..lbl
  _debug_str_ equ __debug_str_ # a1
  a1 = 0
  c2 = 0
  c3 = 0
  f2 = 0
  repeat ..lbl-..f1
   virtual at 0
    db _format,0,0
    load c1 word from %-1
   end virtual
   if c1 = '%s'
    virtual at 0
     db _format,0,0
     store word 0 at %-1
     load c1 from f2-c2
    end virtual
    if c1 <> 0
     DEBUGS 0,_debug_str_+f2-c2
    end if
    c2 = c2 + 1
    f2 = %+1
    DEBUGF_HELPER S,a1,0,_arg
   else if c1 = '%x'
    virtual at 0
     db _format,0,0
     store word 0 at %-1
     load c1 from f2-c2
    end virtual
    if c1 <> 0
     DEBUGS 0,_debug_str_+f2-c2
    end if
    c2 = c2 + 1
    f2 = %+1
    DEBUGF_HELPER H,a1,0,_arg
   else if c1 = '%d' | c1 = '%u'
    local c4
    if c1 = '%d'
     c4 = 1
    else
     c4 = 0
    end if
    virtual at 0
     db _format,0,0
     store word 0 at %-1
     load c1 from f2-c2
    end virtual
    if c1 <> 0
     DEBUGS 0,_debug_str_+f2-c2
    end if
    c2 = c2 + 1
    f2 = %+1
    DEBUGF_HELPER D,a1,c4,_arg
   else if c1 = '\n'
    c3 = c3 + 1
   end if
  end repeat
  virtual at 0
   db _format,0,0
   load c1 from f2-c2
  end virtual
  if (c1<>0)&(f2<>..lbl-..f1-1)
   DEBUGS 0,_debug_str_+f2-c2
  end if
  virtual at 0
   ..f1 db _format,0
   ..lbl:
   __debug_strings equ __debug_strings,_debug_str_,<_format>,..lbl-..f1-1-c2-c3
  end virtual
 end if
}

macro __include_debug_strings dummy,[_id,_fmt,_len] {
 common
  local c1,a1,a2
 forward
  if defined _len & ~_len eq
   _id:
   a1 = 0
   a2 = 0
   repeat _len
    virtual at 0
     db _fmt,0,0
     load c1 word from %+a2-1
    end virtual
    if (c1='%s')|(c1='%x')|(c1='%d')|(c1='%u')
     db 0
     a2 = a2 + 1
    else if (c1='\n')
     dw $0A0D
     a1 = a1 + 1
     a2 = a2 + 1
    else
     db c1 and 0x0FF
    end if
   end repeat
   db 0
  end if
}

macro DEBUGF_HELPER _letter,_num,_sign,[_arg] {
 common
  local num
  num = 0
 forward
  if num = _num
   DEBUG#_letter _sign,_arg
  end if
  num = num+1
 common
  _num = _num+1
}

macro include_debug_strings {
 if __DEBUG__ = 1
  match dbg_str,__debug_strings \{
   __include_debug_strings dbg_str
  \}
 end if
}