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andreism



Joined: 10 Feb 2007
Posts: 9
Location: Russia, Moscow
andreism
Does anybody have an assembler library implementing the *printf functions family? I'm sure I had it some time ago, but after I moved I seem to have lost these files. So if somebody has it, please let me know. Thanks in advance!
Post 25 Feb 2007, 20:48
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vid
Verbosity in development


Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia
vid
you can always link to libc. Implementing full-featured printf is very lot of work, and i doubt somebody did it.
Post 25 Feb 2007, 21:19
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andreism



Joined: 10 Feb 2007
Posts: 9
Location: Russia, Moscow
andreism
Well, I think it had only printf, no sprintf or fprintf. If I'm not confusing it with HLA or something like that. Shame that I didn't preserve these folders.
Post 25 Feb 2007, 21:42
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vid
Verbosity in development


Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia
vid
i doubt it was *complete* printf. Maybe some printf-like function...
Post 25 Feb 2007, 21:58
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rugxulo



Joined: 09 Aug 2005
Posts: 2341
Location: Usono (aka, USA)
rugxulo
IIRC, the 80xxx snippets had a printf implemented, but I never used it.

Okay, it seems to be in 80xxx_94.zip. Good luck in using it!

Code:
;   Name:       PRINTF.ASM      Generic Printf Module
;
;   Revision:   1.00
;
;   Date:       November 30, 1988
;
;   Author:     Randy Spurlock
;
;******************************************************************************
;
;  Module Functional Description:
;
;       Printf - Prints a formatted string of arguments to
;                the requested handle.
;
;       Calling Sequence:
;
;               mov     al,HANDLE       ; Get the desired handle to print on
;               lea     bx,ds:[args]    ; Get a pointer to the arguments
;               lea     si,ds:[format]  ; Get a pointer to the format string
;               call    printf          ; Call the printf routine
;
;       The conversion characters are as follows:
;
;               %% - Print percent sign to handle
;               %c - Output the next argument as a character
;               %s - Output the next argument as a string
;               %x - Output the next argument as a hex number using abcdef
;               %X - Output the next argument as a hex number using ABCDEF
;               %h - Output the next argument as a hex number using abcdef
;               %H - Output the next argument as a hex number using ABCDEF
;               %d - Output the next argument as a decimal number (Signed)
;               %u - Output the next argument as a decimal number (Unsigned)
;               %o - Output the next argument as a octal number
;               %b - Output the next argument as a binary number
;               %f - Output the next argument as a fractional number (Signed)
;
;       Other format specifiers may precede the conversion character:
;
;               -  - Left justify the field
;               +  - Set signed field
;               n  - Specify the field width/precision
;               t  - Specify short value
;               l  - Specify long value
;               #  - Specify far argument pointer
;               &  - Specify indirect argument pointer
;               $  - Specify immediate argument value
;               *  - Variable precision/width value (From argument list)
;
;       All arguments must be pointers to the actual values.
;
;       The following escape sequences are also handled:
;
;               \\   -  Backslash
;               \n   -  Newline
;               \t   -  Horizontal Tab
;               \v   -  Vertical Tab
;               \b   -  Backspace
;               \r   -  Carriage Return
;               \f   -  Form Feed
;               \ddd -  ASCII Character (Octal Notation)
;               \xdd -  ASCII Character (Hexadecimal Notation)
    
Post 26 Feb 2007, 00:53
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andreism



Joined: 10 Feb 2007
Posts: 9
Location: Russia, Moscow
andreism
Thank you Rugxulo! Probably this is that!
Post 26 Feb 2007, 08:57
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f0dder



Joined: 19 Feb 2004
Posts: 3170
Location: Denmark
f0dder
Somebody did a partial and formatting-specifiers-not-conforming version implemented as a FSM - can't remember if it was on masmforum or asmcommunity though, and the source and readme doesn't have any credits, URLs, or the like Sad
Post 26 Feb 2007, 09:29
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vid
Verbosity in development


Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia
vid
Code:
;       The following escape sequences are also handled: 
; 
;               \\   -  Backslash 
;               \n   -  Newline 
;               \t   -  Horizontal Tab 
;               \v   -  Vertical Tab 
;               \b   -  Backspace 
;               \r   -  Carriage Return 
;               \f   -  Form Feed 
;               \ddd -  ASCII Character (Octal Notation) 
;               \xdd -  ASCII Character (Hexadecimal Notation)    

this doen't belong to function. This is done in C language parser.
Post 26 Feb 2007, 12:15
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bogdanontanu



Joined: 07 Jan 2004
Posts: 403
Location: Sol. Earth. Europe. Romania. Bucuresti
bogdanontanu
Here is a very simple implementation that I use for "sprintf" in Solar_OS and SOL_ASM. It is in TASM syntax but i guess you can convert it to FASM with ease.

Code:
;------------------------------
; simple sprintf() replacement
;------------------------------
Str_Printf PROC C
        ARG     @@dest_str_ptr:dword, @@format_str_ptr:dword, @@params:dword:?
        USES    ecx,edx,ebx,esi,edi

        mov     edi,[@@dest_str_ptr]
        mov     esi,[@@format_str_ptr]
        lea     ecx,@@params
        
@@parse_loop:
        mov     al,[esi]
        inc     esi
        
        ; check null terminator
        test    al,al
        jz      @@finish
        
        ; check format specificator
        cmp     al,"%"
        jz      @@is_format

        ;----------------------------------
        ; simply copy non format chars
        ;----------------------------------
@@copy_char:    
        mov     [edi],al
        inc     edi
        jmp     @@parse_loop
        
@@is_format:
        mov     al,[esi]
        inc     esi
        
        cmp     al,"x"
        jz      @@put_nr_hex
        
        cmp     al,"s"
        jz      @@put_string
        
        cmp     al,"u"
        jz      @@put_nr_unsigned       
        
        cmp     al,"%"
        jz      @@copy_char
        
        ;-----------------------------
        ; unknown specificator
        ;-----------------------------
        mov     al,"?"
        mov     [edi],al
        inc     edi
        jmp     @@finish

@@put_nr_hex:
        pushad
        mov     eax,[ecx]
        Call    Dwtoa_Hex32 STDCALL, eax, edi   
        popad
        
        ; jump over number
        add     edi,8
        
        ; next parameter
        add     ecx,4   
        jmp     @@parse_loop
        
@@put_string:
        push    esi
        
        mov     esi,[ecx]
        
        @@loop_string:
                mov     al,[esi]
                inc     esi
                
                test    al,al
                jz      @@string_done
                
                mov     [edi],al
                inc     edi
                jmp     @@loop_string
                
        @@string_done:
        
        pop     esi
        
        add     ecx,4
        jmp     @@parse_loop
        
@@put_nr_unsigned:

        ; get parameter
        mov     eax,[ecx]
        CAll    Dwtoa_Dec,edi,eax
        
        add     edi,eax
        
        ; next parameter
        add     ecx,4
        jmp     @@parse_loop
        
@@finish:
        ;----------------------------------------
        ; place null terminator at destination
        ;----------------------------------------
        xor     eax,eax
        mov     [edi],al
        
        ret
ENDP
    

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It takes a touch of genius -- and a lot of courage --
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Post 26 Feb 2007, 19:30
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vid
Verbosity in development


Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia
vid
i have completed FASMLIB v0.5 which includes printf-like function. I am just having some weird MASM/MS-LINK/WIN32API releated problems. I plean releasing very soon.

It's not exactly printf, it's function for formatted output, suited to be used in assembly (unlike printf)
Post 26 Feb 2007, 19:50
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