windows - How to get Python to use Assembly -


i beginner in assembly, master in python. have started learn x86_64 nasm windows, , wish combine power of assembly, , flexibility of python. have looked over, , have not found way use nasm assembly procedure within python. not mean in-line assembly. wish write assembly program, compile it, , somehow extract procedure use in python program. can illustrate simple example of how this, lost.

you create c extension wrapper functions implemented in assembly , link obj file created nasm.

a dummy example (for 32 bit python 2; not tested):

myfunc.asm:

;http://www.nasm.us/doc/nasmdoc9.html global  _myfunc  section .text _myfunc:      push    ebp      mov     ebp,esp      sub     esp,0x40        ; 64 bytes of local stack space      mov     ebx,[ebp+8]     ; first parameter function      ; more code      leave     ret

myext.c:

#include <python.h>  void myfunc(void);  static pyobject* py_myfunc(pyobject* self, pyobject* args) {     if (!pyarg_parsetuple(args, ""))         return null;     myfunc();     py_return_none; }  static pymethoddef mymethods[] = {     {"myfunc", py_myfunc, meth_varargs, null},     {null, null, 0, null} };  pymodinit_func initmyext(void) {     (void) py_initmodule("myext", mymethods); }

setup.py:

from distutils.core import setup, extension setup(name='myext', ext_modules=[     extension('myext', ['myext.c'], extra_objects=['myfunc.obj'])])

build , run:

nasm -fwin32 myfunc.asm

python setup.py build_ext --inplace

python -c"import myext;myext.myfunc()"


Comments

Post a Comment

Popular posts from this blog

javascript - RequestAnimationFrame not working when exiting fullscreen switching space on Safari -

request animation frame stops working when exiting fullscreen clicking on original space's safari window. fine if fullscreen mode canceled escape key or calling cancelfullscreen(). steps reproduce: open https://dl.dropboxusercontent.com/u/769042/prezi/safari-fullscreen.html click "draw raf", kittie appears click "fullscreen", go fullscreen click "draw raf", kittie appears go space original safari was, showing "click exit fullscreen mode", click anywhere, out fullscreen click "draw raf", nothing happens what handling click calling: window.requestanimationframe(draw); which draws on canvas context: function draw() { ctx.drawimage(img, math.random()*500|0, math.random()*400|0, 100, 100); } i checked .hidden , .visibilitystate, updated correctly. tested on osx 10.9.3, safari 7.0.4 (9537.76.4). has workaround/solution other switching old settimeout? this sounds webkit bug 88940 : using reque...
Read more

jsf - How to ajax update an item in the footer of a PrimeFaces dataTable? -

this visual of table have: +---------+------------+-------------------+ | header1 | header2 | header3 | +---------+------------+-------------------+ | row | input | calc'ed output | | row b | input b | calc'ed output b | | etc.. | etc.. | etc.. | +---------+------------+-------------------+ | total: total calc'ed output | +------------------------------------------+ and stripped-down code: <p:datatable id="mytable" value="#{mybean.somelist}" var="currentitem"> <p:column headertext="header1"> <h:outputtext value="#{currentitem.name}" /> </p:column> <p:column headertext="header2"> <pe:inputnumber value="#{currentitem.inputval}"> <p:ajax event="change" listener="#{mybean.changelistener}" update="outputval outputtotal...
Read more

django - CSRF verification failed. Request aborted. CSRF cookie not set -

error: reason given failure: csrf cookie not set. in general, can occur when there genuine cross site request forgery, or when django's csrf mechanism has not been used correctly. post forms, need ensure: browser accepting cookies. view function uses requestcontext template, instead of context. in template, there {% csrf_token %} template tag inside each post form targets internal url. if not using csrfviewmiddleware, must use csrf_protect on views use csrf_token template tag, accept post data. you're seeing section of page because have debug = true in django settings file. change false, , initial error message displayed. can customize page using csrf_failure_view setting. did find, nothing helped, must foolish(( my template <form method="post">{% csrf_token %} {% field in form %} <div class="control-group"> {{ field }} </div> {% endfor %} <input type=...
Read more