This may be compiler specific, in which case I am using the IAR EWARM 5.50 compiler (firmware development for the STM32 chip).
Our project consists of a bunch of C-code libraries that we compile first, and then the main application which compiles its C-code and then links in those libraries (pretty standard stuff).
However, if I use a hex editor and open up any of the library object files produced or the final application binary, I find a whole bunch of plain text references inside the output binary to the file paths of the C files that were compiled. (eg. I see "C:\Development\trunk\Common\Encryption\SHA_1.c")
Two issues with this:
we don't really want the file paths being easily readable as that indicates our design some what
the size of the binary grows if you have your C-files located in a long subdirectory (the binary contains the full path, not just the name)...this is especially important when we're dealing with firmware that has a limited amount of code space (256KB).
Any thoughts on this? I've tried all the switches in the compiler I can think of to "remove debug information", etc., but those paths are still in there.
"The command-line option --no_path_in_file_macros has been added. It removes the path leaving only the filename for the symbols FILE and BASE_FILE."
It is defined in the release notes if IAR.
http://supp.iar.com/FilesPublic/UPDINFO/005832/arm/doc/infocenter/iccarm_history.ENU.html
Or you can look for FILE and BASE_FILE macros and remove it you do not want to use the flag.
Related
The point is to generate a hex without main function using IAR linker - xlink?
This code should be loaded into the RAM of RL78 MCU.
A quick Google search of iar generate hex from library brought me to this document, "Creating an Absolutely Placed Library", as a first result. It has all the information you need, plus some information on using a CRC for consistency checking. The document is for the IAR EWRX variant, but the concepts should all be the same.
The basic process is to compile your library as an executable, but without a main() function in it. You'll need to set your library configuration under General -> Library Options to None. You can also setup your file conversion settings at this point.
Since you don't have a main() function for a program entry point, you will need to create an entry function to call the IAR C runtime initialization function, __iar_data_init2(), and then set the linker to use this function as the entry point (which can be found under Linker Options -> Library Options).
When building a library, all the symbols will be preserved until the final link step for the application using it, but since you are building this as an executable, it is important that the symbols you want to keep have the __root keyword, or under Linker -> Extra Options you can specify --no-remove to keep all symbols.
In the next step, you need to use isymexport to export the symbols that you want. You will need a file to direct the tool what to export. In the example, they have a file that just contains the following:
show lib_*
show __checksum*
This will direct the tool to export all symbols beginning with lib_ and all symbols beginning with __checksum. They note that __iar_data_init2() should not be exported, as this would cause conflicts with the application that ultimately will use this code. You invoke the tool like so:
isymexport <path to .out file> <path to output from tool> --edit <path to file created above>
Now you should have the output from isymexport and the library file that you were looking for. For the application using this library, you'll need to add the output from isymexport as a library under Linker -> Library, and in your application, you'll need to call your entry function in the library before you attempt to use any of the library's symbols.
This should be the information you need to generate a library that lives in a hex file and can be loaded separately, as well as how to use that library. The referenced document has a lot more detail, so if it is available at that link (or can be found elsewhere by title) it will be a better reference than my summary here.
When I compile with Compaq Visual Fortran, I get these errors (when it starts the linker process) that should be located in a .lib file I thought I added to the workspace:
X30XFULL.OBJ : error LNK2001: unresolved external symbol _BCON#4
X30XFULL.OBJ : error LNK2001: unresolved external symbol _RCON#16
According to where I've googled about, it looks like Compaq Visual Fortran (Version 6, FYI) can't find the library files...
My main question is, how do I use them? Could there possibly be other missing files? Here is what I've tried:
Right Click->Adding the files in the FileView window
Going under Project->Settings, Clicking the Link tab, and under the input category, adding the library files under object/library modules (bprop.lib rprop.lib) and having the Additional Library Path point to where the files are. I also did this under the Resources tab and where it says "Additional Resource Include Directories," I put the directory of where these files were located.
To cover my bases, I also put these files in where the project workspace file, where the compiled executable file would be generated, and pretty much any place I could think of that CVF might possibly look to in order to find these files.
A little background:
I have this Fortran executable that was last compiled in the 90s. From my research, it's a 16-bit compiled one which won't work on a 64-bit machine.
The original code has, at least from what we can gather, 16 bit compiled libraries. Without the original compiler, we can't figure out how to look at or use them. We also have a (semi)equivalent library file that's actually a .FOR file. For all we know, the BPROP.FOR and BPROP.LIB could be the same file (they were found in the same source code area). If we use the BPROP.FOR file, the program can compile, but we are having issues with results that we've traced down to information that is used/gathered/processed in that file.
However, we do have 32-bit versions of (what we think) are the same .lib files. So, we're trying to use that, which is what is being used to compile the Fortran executable which results in the errors above.
Found the answer, at least for me. I don't know how easy it'll be to extrapolate if anyone else finds these answers, but this is how I solved it.
With the old Fortran libraries, all I had to do was add them to the FileList view that has all of the different fortran files (.FOR, etc). I did not have to add these libraries in the settings like I mentioned, but that will work as well. Other then that, I didn't need to add any extra declarations or anything similar.
What we did find out is that the function in question (BCON and RCON) that calls those .LIB files required an additional argument. The only way I found this out was examining other source code that used those libaries, so if anyone is stuck like I was, that would be a good place to start. Alternatively, if you can read the .lib file in a hex editor, you can kind of make out functions and their arguments.
Of course, if you have the original source code for said arguments, that's even better. :)
I have a program which compiles and runs scripts.
To create a standalone version of the script, I reserve a large static buffer to hold the compiled script. The compiled script is copied into a copy of the program and it can then be run from that copy.
This works fine. It has some disadvantages however:
the buffer is static and takes up space if there's no compiled
program in it.
if the script to be included exceeds the buffer's size, I need to build a new version with a larger buffer.
I'd like to add the compiled script to the end of the program, but naively doing so doesn't work as the exe loader chokes on the new file size.
Is there a way to manipulate the exe so it would be acceptable for the loaders (mind this is a cross platform program)?
would be acceptable for the loaders (mind this is a cross platform program)?
I would think that this is unlikely to be possible without being platform specific. Time for a common interface with different implementations (so the code that saves/loads the script is common, but the executable manipulation is specific).
On Windows you'll hit the problem that a running executable file is locked against modification. By working on copies this can be worked around (but the only way to rename back in a completely deterministic way it is perform the move on boot, but scheduling a job might be acceptable).
On Windows the easiest way to add data to an image (executable or dll) is using resources. Define a custom resource type and add into the image (UpdateResource function) and later retrieve with LoadResource.
You said "script", so I suppose you have a separate file containing the script (a text file?). You could write a simple program that reads the script file and convert it in a compilable form (e.g. a C source containing the initialization of an array of byte). There are also tools you can use to convert an arbitrary file into a linkable object (.o or .obj). In the past I have used the command "objcopy" from GNU bimutils. In particular, on linux:
objcopy -I binary -O elf32-i386 mydata mydata.o
This command creates an object and three public symbols you can use to find the start, the end and the size of your data block:
_binary_mydata_start
_binary_mydata_end
_binary_mydata_size
Something similar may work also on Windows, provided that you install a Windows version of GNU binutils (e.g. cygwin).
I just started to learn masm32 and am a bit confused about the .obj files, I used C# before, so the compiler linked for me, now I have qeditor but I cant find an option to assemble multiple .asm files. I have a very basic program built of:
Vector.asm (+ Vector.inc), ...is a vector
Matrix.asm (+ Matrix.inc), ...is a matrix
Main.asm ... is the main program where I do some Vector calculations
When I compile each one of them seperate, I get 3 .obj files, what are they? I looked into the makeit.bat at the line:
\masm32\bin\PoLink /SUBSYSTEM:CONSOLE "console.obj"
so I thought I could just change it to
\masm32\bin\PoLink /SUBSYSTEM:CONSOLE "console.obj" "vector.obj" "matrix.obj"
to compile my whole program, but I was wrong :(, can anyone help me to successfully create a .bat (because maybe I want to create a little ide later, for which I would need a .bat) which compiles the 3 .obj files into 1 .exe?
I'm not familiar with PoLink, but a standard linker requires more than just a list of .obj files. It will also need to know what you intend on calling the resulting .exe (it can assume if you only give it a single .obj file). May also require an entry point. May even require library definitions if you're doing multiple files. You really need to read the docs and see what it wants on the command line...
I am trying to understand the different file extensions for the pfxplus powerflex database. Could someone please help telling me briefly what each file is for?
.k1
.k2
.k3
...
.k13
.k14
.k15
.fd
.def
.hdr
.prc
.pc3
Data files:
OK, so .dat is the data file.
.k1 -> .k15 are index files.
These are the critical data files for runtime. (Combined with filelist.cfg or pffiles.tab similar to define what files are available overall).
.fd is the file definition, needed for compiling programs
.tag (which you did not mention) is needed only if you need to access field names at run time (such as using a generic report tool)
.def is the file definition in human readable form, and is not needed by any process but is produced so a programmer or user can understand the file structure.
Run time:
The .ptc files are the compiled threads interpreted by the powerflex runtime.
The .prc file is a resource file that is used at runtime in conjunction with the .ptc file - it defines how a character based program is to look in a gui environment in "g-mode". It was the cheap way to upgrade character based programs when windows first started getting popular usage.
.hdr and .pc3 escape me at the moment, but are vaguely familiar - .hdr is probably another data file used with compression or special field types for later versions of pfxplus. .pc3 may in fact be the .ptc files...