Page 1 of 3 123 LastLast
Results 1 to 10 of 24

Thread: Further Developments in Asmosphere II

  1. #1

    Further Developments in Asmosphere II

    Hi Kent,

    I've given this code a thorough workover and shaken a out a few bugs. The main issue remaining is that you can't really make floating point operations transparent at this level. - the FPU is a totally different beast. - we will have to speak to it in Reverse Polish or hide it in a floating point library.

    This is Test_oop1.tbasic - working with the latest version: I hope it makes sense enough to play with. - There's more work to do on the manual.

    [code=thinbasic]
    uses "OXYGEN"
    uses "FILE"

    dim vv as single

    dim src as string ="
    ; test_oop1
    ; 13:30 21/06/2008


    initialise:
    ;-----------
    ; ebx holds address of runtime functions table
    ; assume esi edi and ebx are preserved


    esi=getmemory 1000 ; pass address of sz holding length
    ; this replaces the previous varbase in esi


    call testclasses
    freememory esi

    ret


    ;==========================
    ; classes
    ;==========================


    ;------------------
    ;GENERIC OOP MACROS
    ;------------------



    def class type

    def context
    (
    indexers `ecx` offset 0 ascending var %1 this
    )

    def params
    (
    def parambytes %1
    indexers `ebp` offset 8 ascending
    )

    def locals
    (
    indexers `ebp` offset 0 descending
    push ebp
    mov ebp,esp
    sub esp,%1
    )

    def release
    (
    mov esp,ebp
    pop ebp
    ret parambytes
    )

    def create
    (
    var %1 %2
    %1_methods %2
    )

    def method
    (
    lea ecx, %1
    proc )


    ;------------------
    ;define classes
    ;------------------

    class class0
    (
    4 u 4 v 4 w
    )

    class class1
    (
    class0, 4 a 4 b 4 c
    )

    class class2
    (
    class1, 4 d 4 e
    )


    ;define methods
    ;---------------

    .init
    (
    context class0
    params 0
    locals 0
    release
    )

    .put
    (
    context class1
    params 4
    var 4 aa
    locals 16
    var 4 i j
    mov eax,aa
    mov this.a,eax
    mov eax,0
    release
    )

    .get
    (
    context class1
    params 0
    locals 16
    mov eax,this.a
    release
    )
    .clear
    (
    context class2
    params 0
    locals 16
    mov this.u,0
    mov this.v,0
    mov this.w,0
    mov this.a,0
    mov this.b,0
    mov this.c,0
    mov this.d,0
    mov this.e,0
    release
    )


    ;define method calls
    ;-------------------


    def class0_methods
    (
    def %1_init method %1 init
    )

    def class1_methods
    (
    class0_methods %1
    def %1_get method %1 get
    def %1_put method %1 put
    )

    def class2_methods
    (
    class1_methods %1
    def %1_clear method %1 clear
    )

    '------------
    testclasses:
    '------------
    (

    indexers `esi` offset 100 ascending
    def Result [#vv]

    create class2 obj
    obj_init
    ;using 32 bit floating point
    ;inline table of single constants
    edx=data (ns 42.125 ns 0.61803 ns 3.14159)
    obj_put [edx+4]
    Result=obj_get
    obj_clear
    ;Result=obj_get
    ret

    )


    ;=========================
    ; end classes
    ;=========================
    "


    ' record o2 listing
    file_save ("t.txt",o2_view(src))

    O2_ASMO src

    if len(O2_ERROR)>0 then
    msgbox 0, O2_ERROR+$crlf+"Program will end now"
    stop
    end if

    O2_EXEC

    msgbox 0, vv

    [/code]



    http://community.thinbasic.com/index.php?topic=1637.0


  2. #2
    thinBasic MVPs kryton9's Avatar
    Join Date
    Nov 2006
    Location
    Naples, Florida & Duluth, Georgia
    Age
    65
    Posts
    3,869
    Rep Power
    401

    Further Developments in Asmosphere II

    Thanks Charles, I got it working, now I will study and play with it. Will write more in the future after some playing.
    Acer Notebook: Win 10 Home 64 Bit, Core i7-4702MQ @ 2.2Ghz, 12 GB RAM, nVidia GTX 760M and Intel HD 4600
    Raspberry Pi 3: Raspbian OS use for Home Samba Server and Test HTTP Server

  3. #3

    Further Developments in Asmosphere II


    A lurid description of Asmosphere macros

    Technical descriptions can be quite hard to follow so I thought of a way to describe these in more graphic terms which are easier to conceptualise.

    Imagine a macro word as an amoeba. It can eat words both ahead of it and behind it. If the macro contains any %1s in its body, it will consume the first word to the right of it. If a %2 is present then it will consume the second word to the right and so forth. If there is a %0 then the word to the left is taken. If there is a %b in the macro body then it consumes all the words from the beginning of the line. If there is a %e then the macro will devour the rest of the line or even an entire block if a left bracket is encountered.

    The macro substitutes all the %params in its body with the words it has swallowed, then bursts disgorging its contents into the script.

    Macros may contain other macros - These are resolved recursively. If the macro contains itself or any of its progeny contains itself then the script will recursively inflate - in theory until the computer runs out of memory but the preprocessor imposes a limit to this source code inflation. If the source script inflates due to macro recursion by a factor of 10 then assembly is halted. In addition to this protection, recursive cycles are limited to 256 loops per word - so macros like def def def will not lock the assembler into a perpetual (non inflationary) loop.

    Macros may also contain definitions of other macros - so it is possible to generate an entire vocabulary with a single word - to create a domain-specific mini-language.

    If macros are defined between brackets then they have local scope within those brackets and do not affect code elsewhere. So it is possible to have several mini languages in the same script - all using similar words but for different purposes, without causing name conflicts.
    The amoeba is confined by brackets.




  4. #4
    Super Moderator Petr Schreiber's Avatar
    Join Date
    Aug 2005
    Location
    Brno - Czech Republic
    Posts
    7,086
    Blog Entries
    5
    Rep Power
    725

    Further Developments in Asmosphere II

    Hi Charles,

    I was for 3 days out and once back you advanced again
    May I ask you to make "The Asmosphere Assembler" topic with help + DLL + samples as a sticky one, with date of last update in thread name? ( like "The Asmosphere Assembler [UPDATED 18-Jun-2k8]")

    Thanks a lot,
    for nice new shiny toys to play with


    Petr
    Learn 3D graphics with ThinBASIC, learn TBGL!
    Windows 10 64bit - Intel Core i5-3350P @ 3.1GHz - 16 GB RAM - NVIDIA GeForce GTX 1050 Ti 4GB

  5. #5

    Further Developments in Asmosphere II

    Hi Petr,

    Welcome back! That is a good idea but I don't have the option available to create sticky topics - only locked ones. Is there a magic switch Eros can throw somewhere?

    PS

    The preprocessor layer feels nearly complete but am tempted to add a few more runtime string functions - like str$ hex$ val - these are a bore to code up from scratch when they are so readily accessible.

  6. #6
    thinBasic author ErosOlmi's Avatar
    Join Date
    Sep 2004
    Location
    Milan - Italy
    Age
    54
    Posts
    8,636
    Blog Entries
    2
    Rep Power
    10

    Further Developments in Asmosphere II

    I've created a dedicated forum for all your code and projects, Charles.
    You should be able to add sticky and moderate posts in there.
    I've also moved all posts and subforum regarding ASM.
    Hope this is ok or ... let me know if you need other setup or subforums.

    Ciao
    Eros
    www.thinbasic.com | www.thinbasic.com/community/ | psch.thinbasic.com
    Win10Pro 64bit - 8GB Ram - Intel i7 M620 2.67GHz - NVIDIA Quadro FX1800M 1GB

  7. #7

    Further Developments in Asmosphere II

    Thank you Eros. I will now set up the sticky topic for the downloads.

    PS: This is our first day of warmish weather. No need for gloves but I am still keeping my hat and furs on

  8. #8
    thinBasic MVPs kryton9's Avatar
    Join Date
    Nov 2006
    Location
    Naples, Florida & Duluth, Georgia
    Age
    65
    Posts
    3,869
    Rep Power
    401

    Further Developments in Asmosphere II

    I liked the lurid description for asmosphere macros. It is going to take me some time to get my head around this stuff. But it is nice to get a glimpse of all our computers do for us behind the scenes. It is easy to forget with high level languages the work that goes on at the lowest levels.
    Acer Notebook: Win 10 Home 64 Bit, Core i7-4702MQ @ 2.2Ghz, 12 GB RAM, nVidia GTX 760M and Intel HD 4600
    Raspberry Pi 3: Raspbian OS use for Home Samba Server and Test HTTP Server

  9. #9
    Super Moderator Petr Schreiber's Avatar
    Join Date
    Aug 2005
    Location
    Brno - Czech Republic
    Posts
    7,086
    Blog Entries
    5
    Rep Power
    725

    Re: Further Developments in Asmosphere II

    This is our first day of warmish weather. No need for gloves but I am still keeping my hat and furs on
    First day !? I am BURNING here for a month. I need an igloo desperately...


    Thanks for all the updates,
    Petr
    Learn 3D graphics with ThinBASIC, learn TBGL!
    Windows 10 64bit - Intel Core i5-3350P @ 3.1GHz - 16 GB RAM - NVIDIA GeForce GTX 1050 Ti 4GB

  10. #10

    Re: Further Developments in Asmosphere II

    Stretching the syntax

    With some very small tweaks it is now possible to define macros and variables with multisymbol and multiword names. This takes us into uncharted territory, but to give a flavour of what is possible this is all valid Asmosphere preprocessor:


    def `@-/\-@` nop
    def `++` inc
    def `--` dec
    def `<>` cmp eax,edx
    def `` mov eax,1
    def `` mov eax,2
    def `` mov eax,3
    def `` mov eax,-1
    def `bye bye` ret
    var 4 `the meaning of life`

    @-/\-@
    ++ eax
    -- eax
    <>




    mov the meaning of life,42
    bye bye



    http://community.thinbasic.com/index.php?topic=1845

Page 1 of 3 123 LastLast

Similar Threads

  1. Further Developments in Asmosphere III
    By Charles Pegge in forum Legacy
    Replies: 30
    Last Post: 22-09-2008, 22:55

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •