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Index > Macroinstructions > building operator tables

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edemko



Joined: 18 Jul 2009
Posts: 549
edemko
Hi people.
That's a sketch only.
The macro was designed to easily build operators table.

1st parameter - operator, may be neither '' nor containing zeros inside as 0 means end of string to parse.
2nd parameter - must be byte value within $02..$ff, this is 1st parameter's alias, in other words a command, value of $01 is reserved for qwords immediately following it after input parsed.
3rd parameter - method pointer for 2nd parameter.

As those three parameters are cyclic, we'll form an array of consecutive elements, eg...
Code:
equates 'shl','<',.shl,\
        'shr','>',.shr
    

...will be stored as
Code:
db '<'    ;to find in parsed source
dd .shl   ;to jump on match
db 3      ;cmpsb.ecx
db 'shl'  ;cmpsb.esi or edi

db '>'
dd .shr
db 3
db 'shr'

db 0      ;that is why 2nd parameter may not be zero as 0 means end of array, end of tring parsed
    


I am not still sure with those priorities.

Like fasm, after operators brought into byte aliases(so that evaluator will compare quickly), blanks removed, and strings encoded into qwords with $01s preceding them - evaluator may be run.
Having found an alias, it will look for its method from the table.

Concerning the procedure, it's planned to have such fields:
op1
op2
result
some_control_flags

There are 3 muls to be: qword*qword=dqword.
mul0 will pick dword1:dword0 of result.
mul1 will pick dword2:dword1 of result.
etc

Well, i do not know :)
Thank you.

Code:
format pe gui 4.0
include 'win32ax.inc'


section '' code executable import readable writable
  library kernel32,'kernel32.dll',\
          user32,'user32.dll'

  include 'api\kernel32.inc'
  include 'api\user32.inc'

  text db '1 + 2',0
  temp rb 255

  entry $
        stdcall calc,text,temp
        invoke  ExitProcess,eax


proc calc; text,temp
.equates:
        macro equates [OPERATOR*,operator*,method*]{
          common
            local var1
          forward
            virtual at 0
              db OPERATOR
              if $=0
                display 'error: OPERATOR name is empty'
                err
              end if
              repeat $
                load var1 byte from %-1
                if var1=0
                  display 'error: OPERATOR name contains zero'
                  err
                end if
              end repeat
              if operator<2 | operator>$ff
                display 'error: OPERATOR''s name alias(operator) must be within $02..$ff'
                err
              end if
              var1=$
            end virtual
            db operator
            dd method
            db var1,OPERATOR
          common
            db 0
        }
        equates '+'    ,'+' ,.add  ,\
                '-'    ,'-' ,.sub  ,\
                '/'    ,'/' ,.div  ,\
                'and'  ,'a' ,.and  ,\
                'mod'  ,'m' ,.mod  ,\
                'mul0' ,'0' ,.mul0 ,\
                'mul1' ,'1' ,.mul1 ,\
                'mul2' ,'2' ,.mul2 ,\
                'not'  ,'n' ,.not  ,\
                'or'   ,'o' ,.or   ,\
                'rcp'  ,'r' ,.rcp  ,\
                'sar'  ,'s' ,.sar  ,\
                'shl'  ,'<' ,.shl  ,\
                'shr'  ,'>' ,.shr  ,\
                'xor'  ,'x' ,.xor  ;,\
        purge equates

.add:
.sub:
.div:
.and:
.mod:
.mul0:
.mul1:
.mul2:
.not:
.or:
.rcp:
.sar:
.shl:
.shr:
.xor:
endp
    
Post 07 Dec 2010, 10:07
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bitRAKE



Joined: 21 Jul 2003
Posts: 2915
Location: [RSP+8*5]
bitRAKE
Why not create three separate tables with macro? Tables could be sorted and log(n) searchable - both pre-parse and post-parse tables.
Post 07 Dec 2010, 16:01
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edemko



Joined: 18 Jul 2009
Posts: 549
edemko
bitRAKE wrote:

Why not create three separate tables with macro?

three?
could you name those?
are you talking about table of pointers?

bitRAKE wrote:

Tables could be sorted and log(n) searchable

method1: but we never know a keyword coming
method2(seems to be yours): is that picking keywords first?

log(n), what is that?
sorted by name, length?
...

another variant of parsed text: store operators and operands in two lines id est commands and data

i found the proc must take at least these params: text, char_lower_proc_pointer, temp1, temp2_possibly

it will be great to: have some .tour variable so that you load byte from text and jmp [.tour]; so we get rid of some flags/modes(if mode=xxx then jmp there else there elsewhere nowhere...); we just jump into a .tour; but that way we are to form .tour, eh
Post 08 Dec 2010, 00:00
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bitRAKE



Joined: 21 Jul 2003
Posts: 2915
Location: [RSP+8*5]
bitRAKE
Proposed idea (or simpler):
Code:
;to find in parsed source
db '<'
db '>'
...

;to jump on match (dword not needed)
dd .shl
dd .shr
...

; to parse source (better ideas exist)
db 3
db 'shl'
db 3
db 'shr'
...    
When we wish to talk about the algorithmic complexity typical asymptotic classes expressed in Big O notation are (c is a constant, n is dependent variable): c, log(n), n, n^c, c^n, etc... If there were 128 table entries then only 7 tests are required to find item (or exclude all keywords in table) through binary partitioning.

When parsing source the last list is used to create an intermediate representation. Then the first list is used while processing the intermediate data. Maybe I am not fulling understanding the task?


Last edited by bitRAKE on 12 Dec 2010, 03:03; edited 1 time in total
Post 11 Dec 2010, 09:52
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edemko



Joined: 18 Jul 2009
Posts: 549
edemko
here below is a sample, demonstrating use of 3 elements table('operator',method)
bitRAKE was right - array sorting by operator name will speed the proc
any 'operator',method params to the macro will be stored as
Code:
db sizeof.'operator' 
db 'operator'
dd method
...
db 0
    

parsed flow looks like:
byte $01 if an operator is next
byte $02 if a value is next
byte '(' as is
byte ')' as is
byte 0 if end of flow

that's all the proc is still able for
on syntax error CF=1 else CF=0
on stage1 end, ie all is fine, HLT instruction occurs as stage2 is not ready
stage2 will have to solve an expression, got from stage1
finding $01 in the flow, stage2 will call that method with CF=1 to know its priority, and CF=0 to perform arithmetic over values(after $02)
such methods, so that, can be standalone procs of a general use as their call params seem to be equal

tested and tired
EDIT BY EDEMKO: ABOUT ~15KB OF AN OLD CODE DELETED YOUR PAGES TO BE LOADED QUICKLY


Last edited by edemko on 18 Dec 2010, 01:18; edited 1 time in total
Post 11 Dec 2010, 16:48
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edemko



Joined: 18 Jul 2009
Posts: 549
edemko
.stage1 update:
keys search more easy
keys search supports user definitions(type 'hello' e.q.)
text can be multi line
.loop more easy and supports chose-able number separators

replace this topic if it's a no more macro one
EDIT BY EDEMKO: ABOUT ~15KB OF AN OLD CODE DELETED YOUR PAGES TO BE LOADED QUICKLY

will bring
Code:
CPU Dump
Address   Hex dump                                         ASCII
00401093           6D|65 74 68 6F|64 20 4D 45|54 48 4F 44|    method METHOD
004010A3  20 6D 65 74|68 6F 64 0D|0A 4D 65 54|68 4F 64 00|  method..MeThOd.
004010B3  01 43 41 4C|4C 46 4C 41|47 01 43 41|4C 4C 46 4C| CALLFLAGCALLFL
004010C3  41 47 01 43|41 4C 4C 46|4C 41 47 01|43 41 4C 4C| AGCALLFLAGCALL
004010D3  46 4C 41 47|00 00 00 00|00                       FLAG.....
    


Last edited by edemko on 18 Dec 2010, 01:20; edited 1 time in total
Post 13 Dec 2010, 20:05
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edemko



Joined: 18 Jul 2009
Posts: 549
edemko
to navigate easily through data brought by .stage1, every element will take 9 bytes:
methods: db 1; dd method; dd method flags
numbers: db 2; dq value
braces: db '(' or ')'; dq ?

hence
Code:
...
  .char:stosb
        jmp     .stage1
  .no_key_found:
...
    


will be
Code:
...
  .char:stosb
         stosd
         stosd
        jmp     .stage1
  .no_key_found:
...
    


also number fetching label will become nested proc, setting CF=1 on error - this will give "universal approach" for your procs guys Smile
Post 14 Dec 2010, 06:56
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edemko



Joined: 18 Jul 2009
Posts: 549
edemko
should '1d1b 0x65535$1' <- those numbers be allowed with no spaces between?
Post 14 Dec 2010, 07:03
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bitRAKE



Joined: 21 Jul 2003
Posts: 2915
Location: [RSP+8*5]
bitRAKE
That is definitely a more universal approach.

How will errors be handled?

For example, those that are detected in later stages?
Post 14 Dec 2010, 08:40
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edemko



Joined: 18 Jul 2009
Posts: 549
edemko
bitRAKE:

i hope .stage2 will be final o)=
of course, brace expressions will be calculated first
searching for an operator with the biggest priority(flags), number of preceding and following values will be counted
and only then an operator is called
it will analise left and right params count, perform some actions with them, return CF=0 or CF=1 at last
qword value it gives, will substitute all left, right params and the operator processed
it may happen there will be values\params in braces only: ("1 2 3") or ("1b2d3h"); braces will be removed only

-what are consecutive params for?
-some instructions visualization
-???
-psllw 1 2 3 4 5 6 7 8 ;i do not remember whether such an instro exists :)
-???
-sure :)

i wish seeing smth like too:
bsr $654654654
bswap 0x45654
bsl $4552123
shrd 123h $123 11b
shld ... ... ...
etc
Post 14 Dec 2010, 10:15
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edemko



Joined: 18 Jul 2009
Posts: 549
edemko
This post is replacing 3 previous !stupid ones.
The macro requires checking if method=0.
In the archive attached you can see that none of the macro is 0.
But fasm says those are.

.stage2 is tested and ready.
ADD method present only still.
The proc designed the way to be easily plugged.
Help me to solve operator ranges please.
Propose yours.
Propose your own complex methods.

Should i keep big posts in CODE tags?
Thank you.
Replace this topic whenever a non-macro one.

EDEMKO DELETED ATTACHMENT - THERE IS A NEWER ONE IN POSTS BELOW


Last edited by edemko on 19 Dec 2010, 22:46; edited 1 time in total
Post 18 Dec 2010, 04:26
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edemko



Joined: 18 Jul 2009
Posts: 549
edemko
hi
previous post with an intro to the proc was deleted as everything is located in an archive below

that chunk...
Code:
        jz      .accept_method          
        mov     al,[eax+8]             
        cmp     al,[edi+8]             
        ja      .switch_element        
    

...replaced with
Code:
        jz      .accept_method         ;1st method 
        mov     al,[eax+5]             ;\
        cmp     al,[edi+5]             ;-priority control
        jae     .switch_element        ;/
    

the fix-up makes priorities be read correctly
the fix-up makes executing methods left-to-right, not vice-versa, this disallows expressions of next form: "+-+-----+value etc"

lots of (tested some) methods added, understanding int64 division is out of my mind for now, thus DIV and MOD absent:
+
-
bsf, bsl
bsr
mul0
mul1
mul2
and
or
xor
sar
shl
shr
neg
not
1/, rcp, reciprocal

EDEMKO DELETED ATTACHMENT - THERE IS A NEWER ONE IN POSTS BELOW


Last edited by edemko on 22 Dec 2010, 04:01; edited 1 time in total
Post 19 Dec 2010, 22:38
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edemko



Joined: 18 Jul 2009
Posts: 549
edemko
replace original chunk with this one to support string integers in text: "12345678", "string", "etc", """":
Code:
  .char:stosb 
        add     edi,8 
        jmp     .stage1 
  .no_key_found: 
        lodsb 
        cmp     al,0 
        jz      .exit_stage1 
        cmp     al,9 
        je      .stage1 
        cmp     al,10 
        je      .stage1 
        cmp     al,13 
        je      .stage1 
        cmp     al,' ' 
        je      .stage1
        cmp     al,'"'                 ;gether quoted string into a number
        je      .raw
        cmp     al,'(' 
        je      .char 
        cmp     al,')' 
        je      .char
        mov     ah,[.fasm_numbers]
        call    .get_number 
        jc      .fail
  .raw_done:
        mov     al,2                   ;means number 
        stosb 
        mov     eax,ebx                ;number.lo
        stosd 
        mov     eax,ecx                ;number.hi
        stosd 
        jmp     .stage1
  .raw: xor     ebx,ebx                ;number.lo
        xor     ecx,ecx                ;number.hi
        mov     ah,0                   ;chars stored
  .raw_loop:
        lodsb
        cmp     al,0
        jz      .fail                  ;'"' expected
        cmp     al,'"'
        jne     .raw_collect           ;pick char
        lodsb                          ;\
        cmp     al,'"'                 ;-merge '""' into '"'
        jne     .raw_done              ;/
  .raw_collect:
        inc     ah
        cmp     ah,8
        ja      .fail                  ;int64 overflow
        shld    ecx,ebx,8
        shl     ebx,8
        mov     bl,al                  ;fasm compatible NOT masm etc
        jmp     .raw_loop
    


move this thread whenever a non-macro

am i wrong:
Code:
macro generate_equates name,[key,method,flags]{
  common
    label name
    local var1
  forward
    virtual at 0
      db key
      var1=$
      if method=0
        ;err       ;Error: error directive invoked in source file.
        display 'nothing displayed, is it possible?'
      end if
    end virtual
    db var1,key
    dd method,flags
  common
    db 0
} 
    


plans:
add byte, word, dword, sbyte, sword, sdword size specifiers to return results of desired type
add mmx-using methods, that will be real fun, hi DOS386

hi the board
Post 20 Dec 2010, 16:27
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edemko



Joined: 18 Jul 2009
Posts: 549
edemko
i beg your pardon for a wrong snippet, correct one
Code:
  .char:stosb 
        add     edi,8 
        jmp     .stage1 
  .no_key_found: 
        lodsb 
        cmp     al,0 
        jz      .exit_stage1 
        cmp     al,9 
        je      .stage1 
        cmp     al,10 
        je      .stage1 
        cmp     al,13 
        je      .stage1 
        cmp     al,' ' 
        je      .stage1
        cmp     al,'"'                 ;\
        je      .raw                   ; \gather quoted string into a number
        cmp     al,"'"                 ; /
        je      .raw                   ;/
        cmp     al,'(' 
        je      .char 
        cmp     al,')' 
        je      .char

        mov     ah,[.fasm_numbers]
        call    .get_number            ;string to number
        jc      .fail
        mov     al,2                   ;means number
        stosb 
        mov     eax,ebx                ;number.lo
        stosd 
        mov     eax,ecx                ;number.hi
        stosd 
        jmp     .stage1

  .raw: xor     ecx,ecx                ;chars + end quote
        mov     ah,al                  ;quote
        mov     al,2                   ;means number
  .raw_loop:
        stosb
        inc     ecx
        cmp     cl,9
        ja      .fail                  ;overflow
        lodsb
        cmp     al,0
        jz      .fail                  ;missing end quote
        cmp     al,ah
        jne     .raw_loop              ;gather number
        lodsb
        cmp     al,ah
        jz      .raw_loop              ;"" -> " & '' -> ' & gather number
        dec     esi                    ;switch behind number
        neg     cl
        add     cl,9
        mov     al,0
        rep     stosb                  ;pad number
        jmp     .stage1                ;continue after end quote
    


i use fasmw's calculator to check myself
after compiling it(fasmcalc) refuses to calculate
Post 20 Dec 2010, 21:35
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edemko



Joined: 18 Jul 2009
Posts: 549
edemko
methods update
being asleep 1 mmx added only
feel free putting new ones
it seems i'm finished
thanks
Code:
generate_equates equates,\
  'packuswb'   ,.packuswb ,0 ,\
  \
  '+'          ,.add      ,0 ,\
  '-'          ,.sub      ,0 ,\
  'bsf'        ,.bsl      ,0 ,\
  'bsl'        ,.bsl      ,0 ,\
  'bsr'        ,.bsr      ,0 ,\
  'byte'       ,.byte     ,0 ,\
  'sbyte'      ,.sbyte    ,0 ,\
  'word'       ,.word     ,0 ,\
  'sword'      ,.sword    ,0 ,\
  'dword'      ,.dword    ,0 ,\
  'sdword'     ,.sdword   ,0 ,\
  \
  'mul0'       ,.mul0     ,1 ,\
  'mul1'       ,.mul1     ,1 ,\
  'mul2'       ,.mul2     ,1 ,\
  \
  'and'        ,.and      ,3 ,\
  'or'         ,.or       ,3 ,\
  'xor'        ,.xor      ,3 ,\
  \
  'sar'        ,.sar      ,4 ,\
  'shl'        ,.shl      ,4 ,\
  'shr'        ,.shr      ,4 ,\
  'shld'       ,.shld     ,4 ,\
  'shrd'       ,.shrd     ,4 ,\
  'shlq'       ,.shlq     ,4 ,\
  'shrq'       ,.shrq     ,4 ,\
  \
  'neg'        ,.neg      ,5 ,\
  'not'        ,.not      ,5 ,\
  '1/'         ,.rcp      ,5 ,\
  'rcp'        ,.rcp      ,5 ,\
  'reciprocal' ,.rcp      ,5 ;,\
    


EDEMKO DELETED ATTACHMENT - THERE IS A NEWER ONE IN POSTS BELOW


Last edited by edemko on 22 Dec 2010, 04:03; edited 1 time in total
Post 21 Dec 2010, 03:30
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edemko



Joined: 18 Jul 2009
Posts: 549
edemko
myself wrote:

it seems i'm finished

i could not stand :)
Code:
macro generate_equates name,[key,method,flags]{
  common
    label name
    local var1
  forward
    virtual at 0
      db key
      var1=$
      if method=0
        ;err       ;Error: error directive invoked in source file.
        display 'nothing displayed, is it possible?'
      end if
    end virtual
    db var1,key
    dd method,flags
  common
    db 0
}

generate_equates equates,\
\;mmx-instructions
  'movd'      ,.movd      ,0 ,\
  'movq'      ,.movq      ,0 ,\
  'packssdw'  ,.packssdw  ,0 ,\
  'packsswb'  ,.packsswb  ,0 ,\
  'packuswb'  ,.packuswb  ,0 ,\
  'paddb'     ,.paddb     ,0 ,\
  'paddd'     ,.paddd     ,0 ,\
  'paddsb'    ,.paddsb    ,0 ,\
  'paddsw'    ,.paddsw    ,0 ,\
  'paddusb'   ,.paddusb   ,0 ,\
  'paddusw'   ,.paddusw   ,0 ,\
  'paddw'     ,.paddw     ,0 ,\
  'pand'      ,.pand      ,0 ,\
  'pandn'     ,.pandn     ,0 ,\
  'pcmpeqb'   ,.pcmpeqb   ,0 ,\
  'pcmpeqd'   ,.pcmpeqd   ,0 ,\
  'pcmpeqw'   ,.pcmpeqw   ,0 ,\
  'pcmpgtb'   ,.pcmpgtb   ,0 ,\
  'pcmpgtd'   ,.pcmpgtd   ,0 ,\
  'pcmpgtw'   ,.pcmpgtw   ,0 ,\
  'pmaddwd'   ,.pmaddwd   ,0 ,\
  'pmulhw'    ,.pmulhw    ,0 ,\
  'pmullw'    ,.pmullw    ,0 ,\
  'por'       ,.por       ,0 ,\
  'pslld'     ,.pslld     ,0 ,\
  'psllq'     ,.psllq     ,0 ,\
  'psllw'     ,.psllw     ,0 ,\
  'psrld'     ,.psrld     ,0 ,\
  'psrlq'     ,.psrlq     ,0 ,\
  'psrlw'     ,.psrlw     ,0 ,\
  'psubb'     ,.psubb     ,0 ,\
  'psubd'     ,.psubd     ,0 ,\
  'psubsb'    ,.psubsb    ,0 ,\
  'psubsw'    ,.psubsw    ,0 ,\
  'psubusb'   ,.psubusb   ,0 ,\
  'psubusw'   ,.psubusw   ,0 ,\
  'psubw'     ,.psubw     ,0 ,\
  'punpckhbw' ,.punpckhbw ,0 ,\
  'punpckhdq' ,.punpckhdq ,0 ,\
  'punpckhwd' ,.punpckhwd ,0 ,\
  'punpcklbw' ,.punpcklbw ,0 ,\
  'punpckldq' ,.punpckldq ,0 ,\
  'punpcklwd' ,.punpcklwd ,0 ,\
  'pxor'      ,.pxor      ,0 ,\
\;etc
  '+'          ,.add      ,0 ,\
  '-'          ,.sub      ,0 ,\
  'bsf'        ,.bsl      ,0 ,\
  'bsl'        ,.bsl      ,0 ,\
  'bsr'        ,.bsr      ,0 ,\
  'byte'       ,.byte     ,0 ,\
  'sbyte'      ,.sbyte    ,0 ,\
  'word'       ,.word     ,0 ,\
  'sword'      ,.sword    ,0 ,\
  'dword'      ,.dword    ,0 ,\
  'sdword'     ,.sdword   ,0 ,\
  \
  'mul0'       ,.mul0     ,1 ,\
  'mul1'       ,.mul1     ,1 ,\
  'mul2'       ,.mul2     ,1 ,\
  \
  'and'        ,.and      ,3 ,\
  'or'         ,.or       ,3 ,\
  'xor'        ,.xor      ,3 ,\
  \
  'sar'        ,.sar      ,4 ,\
  'shl'        ,.shl      ,4 ,\
  'shr'        ,.shr      ,4 ,\
  'shld'       ,.shld     ,4 ,\
  'shrd'       ,.shrd     ,4 ,\
  'shlq'       ,.shlq     ,4 ,\
  'shrq'       ,.shrq     ,4 ,\
  \
  'neg'        ,.neg      ,5 ,\
  'not'        ,.not      ,5 ,\
  '1/'         ,.rcp      ,5 ,\
  'rcp'        ,.rcp      ,5 ,\
  'reciprocal' ,.rcp      ,5 ;,\

; form: value mmx-command value
.mmx_in:cmp     eax,1
        jne     .mmx_in_nok
        cmp     ebx,eax
        jne     .mmx_in_nok
        add     edi,9
        mov     al,2
        stosb
        movq    mm0,[edi]
        ret     0
  .mmx_in_nok:
        pop     eax
        stc
        ret     0
.mmx_out:
        movq    [edi],mm0
        add     edi,8
        clc
        ret     0
macro mmx [instro]{
  forward
    label .#instro
        call    .mmx_in
        instro  mm0,[ecx+9+1]
        jmp     .mmx_out
}
mmx movd      ,\
    movq      ,\
    packssdw  ,\
    packsswb  ,\
    packuswb  ,\
    paddb     ,\
    paddd     ,\
    paddsb    ,\
    paddsw    ,\
    paddusb   ,\
    paddusw   ,\
    paddw     ,\
    pand      ,\
    pandn     ,\
    pcmpeqb   ,\
    pcmpeqd   ,\
    pcmpeqw   ,\
    pcmpgtb   ,\
    pcmpgtd   ,\
    pcmpgtw   ,\
    pmaddwd   ,\
    pmulhw    ,\
    pmullw    ,\
    por       ,\
    pslld     ,\
    psllq     ,\
    psllw     ,\
    psrld     ,\
    psrlq     ,\
    psrlw     ,\
    psubb     ,\
    psubd     ,\
    psubsb    ,\
    psubsw    ,\
    psubusb   ,\
    psubusw   ,\
    psubw     ,\
    punpckhbw ,\
    punpckhdq ,\
    punpckhwd ,\
    punpcklbw ,\
    punpckldq ,\
    punpcklwd ,\
    pxor
purge mmx
    


Description:
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Post 22 Dec 2010, 03:54
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edemko



Joined: 18 Jul 2009
Posts: 549
edemko
hi
i found a bug in a get_number proc, which made me removing xxh numbers support(that's clocky)
reading raw(string) values is this proc's job now
main proc(calc) can count in direct and reversed modes
it can also dump result to string
the simplest form used ie. full-ecx dump(not until zero) hence mmx-commands' result look pretty
there is a small shell inside an archive attached to this post

http://fasmme.googlecode.com/files/calc.zip
Post 23 Dec 2010, 19:13
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