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embeddeddisassemblyobjdump

How to compile objdump for the m32c architecture

I would like to use objdump to view binary m32c files. When I type in: objdump -i the architecture list returned is i386 based. Looking at the source code from binutils it appears that the m32c architecture is supported, just not compiled in by default.

I've also seen arm-none-eabi-objdump for the embedded ARM market. What I would like to create is a compiled version of objdump for the m32c architecture. Has anyone done something similar?

Solution

  • Building binutils for a specific target is pretty straightforward. If binutils is to be hosted on Windows, you will need to install MinGW/GCC and the Msys shell environment. Then from within a Linux bash shell or msys on Windows:

    1. Create a directory to build the tools ()
    2. Create a directory to which to install the tools ()
    3. Extract the binutils package into , hereafter refers to the binutils verion you are building, and is indicated in the package name (binutils-.tar.bz2)
    4. Working from , configure the package for the appropriate target and host:

    ../binutils-<version>/configure --target m32c-elf --prefix <installdir>

    In Windows you can also add to the configure command line --enable-win32-registry=gnu_m32c to allow path lookup via the registry. The toolchain name gnu_m32c is arbitrary - you can call it what you like.

    1. Run make to build the tools.
    2. Run make install-strip to install the tools.

    Note:

    If you are installing on Windows and used the --enable-win32-registry option but subsequently choose to move the installation, or are installing your pre-build tools on a new host, you will need to modify the registry to match; this can be done in regedit editing the key HKEY_LOCAL_MACHINE\SOFTWARE\Free Software Foundation\gnu_m32c, adding/modifying the item:"BINUTILS"="<installdir>" if you have installed GCC as well there are related keys:

    "GCC"="<gccinstalldir>"
"G++"="<gppinstalldir>"