lscript | LAZY script will make your life | Security Testing library
kandi X-RAY | lscript Summary
kandi X-RAY | lscript Summary
This is a script for Kali Linux that automates many procedures about wifi penetration and hacking. I actually made it for fun for me just to save some time, but i don't mind publicing it.
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QUESTION
let me start by saying that this is my first time really meddling with GCC, so I apologize if this question is not very constructive or has been answered before.
I have two static libraries:
"L1.h"
...ANSWER
Answered 2021-Mar-17 at 22:25My first question is, does the order matter here?
Yes, literally from gcc documentation:
-l library
...
It makes a difference where in the command you write this option; the linker searches and processes libraries and object files in the order they are specified. Thus, ‘foo.o -lz bar.o’ searches library ‘z’ after file foo.o but before bar.o. If bar.o refers to functions in ‘z’, those functions may not be loaded.
how to tell the linker(?) that there is a strong definition of the function in another static library, or something along those lines?
Typically in modern embedded:
QUESTION
How to put functions from one object file to one special section and memory region for GCC linker? I am building one standalone application for Xilinx MPSoC A53 processor. GNU ld from Linaro 2.27 is used. Xilinx software is Xilinx SDK 2017.4. I plan to put most code into DDR and some critical functions from one file into on-chip memory. I checked '4.6.4.5. Input Section Example' from Using_ld_the_GNU_Linker/sections.html. So I created the following linker script. The output section '.text_ocm' is added by me.
...ANSWER
Answered 2018-Mar-15 at 19:55The linker cares about the leading ./
in some ways when matching file names, so either write
QUESTION
I am planning to use C to write a small kernel and I really don't want it to bloat with unnecessary instructions.
I have two C files which are called main.c
and hello.c
. I compile and link them using the following GCC command:
ANSWER
Answered 2017-Nov-11 at 13:22As I mentioned in my comments:
The first few lines (plus the push ecx) are to ensure the stack is aligned on a 16-byte boundary which is required by the Linux System V i386 ABI. The
pop ecx
andlea
before theret
in main is to undo that alignment work.
@RossRidge has provided a link to another Stackoverflow answer that details this quite well.
In this case you seem to be doing real mode development. GCC isn't well suited for this but it can work and I will assume you know what you are doing. I mention some of the pitfalls of using -m16
in this Stackoverflow answer. I put this warning in that answer regarding real mode development with GCC:
There are so many pitfalls in doing this that I recommend against it.
If you remain undeterred and wish to continue forward you can do a few things to minimize the code. The 16-byte alignment of the stack at the point a function call is made is part of the more recent Linux System V i386 ABIs
. Since you are generating code for a non-Linux environment you can change the stack alignment to 4 using compiler option -mpreferred-stack-boundary=2
. The GCC manual says:
-mpreferred-stack-boundary=num
Attempt to keep the stack boundary aligned to a 2 raised to num byte boundary. If -mpreferred-stack-boundary is not specified, the default is 4 (16 bytes or 128 bits).
If we add that to your GCC command we get gcc -Wall -T lscript.ld -m16 -nostdlib main.c hello.c -o main.o -mpreferred-stack-boundary=2
:
QUESTION
I need to send a compiled python file (.pyo extension) over the serial port to my Telit modem with C#. I am writing a C# application to facilitate the downloading of compiled files to the modem. I can successfully send the file to the modem in hyper terminal but I cannot do this from C#.
with C# I can see(AT#LSCRIPT) and delete (AT#DSCRIPT) the files into the modem. so no problem level communication, I think the problem exists in this remark "The file should be sent using RAW ASCII file transfer"(because I get ">>>" in the loop).
...ANSWER
Answered 2017-Sep-04 at 09:32You can get the bytes for the ASCII representation of the commands you need to send using the ASCIIEncoding class:
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