61433

MIPS Hex Output

I'm wondering if there is a way to write MIPS assembly language file (just really simple test file) with a .s extension like is used with the PCSpim simulator and then have it actually compile the code and produce a file with the hex output as if I were to load it onto an actual MIPS chip.

Can SPIM or some other similar software do this? Can you explain a little more about the assembly process from MIPS assembly to the actual executable that the microcontroller uses?

Thanks

<hr>

<strong>EDIT:</strong> So I'm running on ubuntu linux with gcc installed. I have a mips file mipsTest.s that is the following

.text add $7, $0, $0

Now at the command line I type

gcc -c -o mipsy.o mipsTest.s

And the error that I get says

mipsTest.s: Assembler messages: mipsTest.s:2: Error: at most 2 immediate operands are allowed.

So to me that means that the assembler is not reading the mips language, it is probably assuming my assembly file is in x86? How do I get a cross compiler setup so that gcc will recognize the MIPS assembly language instead of x86? (or whatever its interpreting my mipsTest.s file as right now) Thanks!

<strong>EDIT 2:</strong> So I googled "mips cross-assembler" and found a few things. The one that seemed most promising was the umps cross-assembler project on sourceforge. So I downloaded umps2.0 which is supposed to be a stable version. I untarballed it any ran the "./configure" as instructed in the readme file. Then my console gave me the following error which prevents me from running the make command...

jonathan@mini-heiretic:~/Documents/cross-compiler/umps-2.0$ ./configure checking build system type... i686-pc-linux-gnu checking host system type... i686-pc-linux-gnu checking target system type... i686-pc-linux-gnu checking for gcc... gcc checking whether the C compiler works... yes checking for C compiler default output file name... a.out checking for suffix of executables... checking whether we are cross compiling... no checking for suffix of object files... o checking whether we are using the GNU C compiler... yes checking whether gcc accepts -g... yes checking for gcc option to accept ISO C89... none needed checking how to run the C preprocessor... gcc -E checking for grep that handles long lines and -e... /bin/grep checking for egrep... /bin/grep -E checking for ANSI C header files... yes checking for sys/types.h... yes checking for sys/stat.h... yes checking for stdlib.h... yes checking for string.h... yes checking for memory.h... yes checking for strings.h... yes checking for inttypes.h... yes checking for stdint.h... yes checking for unistd.h... yes checking whether byte ordering is bigendian... no checking for a BSD-compatible install... /usr/bin/install -c checking whether build environment is sane... yes checking for a thread-safe mkdir -p... /bin/mkdir -p checking for gawk... gawk checking whether make sets $(MAKE)... yes checking for style of include used by make... GNU checking dependency style of gcc... gcc3 checking for g++... g++ checking whether we are using the GNU C++ compiler... yes checking whether g++ accepts -g... yes checking dependency style of g++... gcc3 checking for gcc... (cached) gcc checking whether we are using the GNU C compiler... (cached) yes checking whether gcc accepts -g... (cached) yes checking for gcc option to accept ISO C89... (cached) none needed checking how to run the C preprocessor... gcc -E checking whether ln -s works... yes checking how to print strings... printf checking for a sed that does not truncate output... /bin/sed checking for fgrep... /bin/grep -F checking for ld used by gcc... /usr/bin/ld checking if the linker (/usr/bin/ld) is GNU ld... yes checking for BSD- or MS-compatible name lister (nm)... /usr/bin/nm -B checking the name lister (/usr/bin/nm -B) interface... BSD nm checking the maximum length of command line arguments... 1572864 checking whether the shell understands some XSI constructs... yes checking whether the shell understands "+="... yes checking how to convert i686-pc-linux-gnu file names to i686-pc-linux-gnu format... func_convert_file_noop checking how to convert i686-pc-linux-gnu file names to toolchain format... func_convert_file_noop checking for /usr/bin/ld option to reload object files... -r checking for objdump... objdump checking how to recognize dependent libraries... pass_all checking for dlltool... no checking how to associate runtime and link libraries... printf %s\n checking for ar... ar checking for archiver @FILE support... @ checking for strip... strip checking for ranlib... ranlib checking command to parse /usr/bin/nm -B output from gcc object... ok checking for sysroot... no checking for mt... mt checking if mt is a manifest tool... no checking for dlfcn.h... yes checking for objdir... .libs checking if gcc supports -fno-rtti -fno-exceptions... no checking for gcc option to produce PIC... -fPIC -DPIC checking if gcc PIC flag -fPIC -DPIC works... yes checking if gcc static flag -static works... yes checking if gcc supports -c -o file.o... yes checking if gcc supports -c -o file.o... (cached) yes checking whether the gcc linker (/usr/bin/ld) supports shared libraries... yes checking whether -lc should be explicitly linked in... no checking dynamic linker characteristics... GNU/Linux ld.so checking how to hardcode library paths into programs... immediate checking whether stripping libraries is possible... yes checking if libtool supports shared libraries... yes checking whether to build shared libraries... yes checking whether to build static libraries... yes checking how to run the C++ preprocessor... g++ -E checking for ld used by g++... /usr/bin/ld checking if the linker (/usr/bin/ld) is GNU ld... yes checking whether the g++ linker (/usr/bin/ld) supports shared libraries... yes checking for g++ option to produce PIC... -fPIC -DPIC checking if g++ PIC flag -fPIC -DPIC works... yes checking if g++ static flag -static works... yes checking if g++ supports -c -o file.o... yes checking if g++ supports -c -o file.o... (cached) yes checking whether the g++ linker (/usr/bin/ld) supports shared libraries... yes checking dynamic linker characteristics... (cached) GNU/Linux ld.so checking how to hardcode library paths into programs... immediate checking dependency style of gcc... gcc3 checking for ld used by gcc... (cached) /usr/bin/ld checking if the linker (/usr/bin/ld) is GNU ld... (cached) yes checking for elf_version in -lelf... no configure: error: *** Libelf not found. Specify a different path or install it. --help for info.

Are there any better options I should try or can anyone provide input on my error?

<strong>EDIT 3:</strong> After downloading Libelf, I can now get a little further in the configure script for umps. Here is the output starting from the newly successful elf_version line

checking for elf_version in -lelf... yes checking for dlopen in -ldl... yes checking for pkg-config... /usr/bin/pkg-config checking pkg-config is at least version 0.9.0... yes checking for SIGCPP... no configure: error: Package requirements (sigc++-2.0) were not met: No package 'sigc++-2.0' found Consider adjusting the PKG_CONFIG_PATH environment variable if you installed software in a non-standard prefix. Alternatively, you may set the environment variables SIGCPP_CFLAGS and SIGCPP_LIBS to avoid the need to call pkg-config. See the pkg-config man page for more details.

So I ran a quick sudo apt-get install sigc++-2.0 but couldn't find the package... suggestions?

<strong>EDIT 4:</strong> Here's the error I get when I try to use the Makefile

jonathan@mini-heiretic:~/Documents/cross-compiler/dwelch67-pic32_samples-f34fb22/blinker01$ make mips-sde-elf-as -EL -G0 --warn --fatal-warnings blinker01.s -o blinker01.o make: mips-sde-elf-as: Command not found make: *** [blinker01.o] Error 127

Answer1:

You can use gcc, among others, to cross-compile or assemble MIPS assembly language source. As far as the process, there is a one-to-one mapping between assembly language mnemonics and machine instructions. The assembler just does the translation for you.

Edit: You're not using a cross-assembler, you're using the system's own gcc. That toolchain is presumably targeting Intel processors, which don't have a 3-operand add instruction. You need to use a cross-assembler for MIPS. Download and install a binary one, or build a toolchain yourself. Then you'll have a cross compiler (maybe called mips-gcc or something like that) that you can use to assemble your MIPS source files.

Recommend

  • RNetCDF cannot open shared object file
  • how to set the transparency of the tkinter frame
  • Difference in gcc -ffp-contract options
  • Why does C++ not support Variable-length arrays? [duplicate]
  • Dynamic memory allocation in c without malloc
  • Stringify object name in Lua
  • What is a softly reachable object?
  • Vim syntax highlighting for multiline fortran openmp directives
  • How to inject the right version information into the resources at compile time?
  • Character strings in Fortran: Portable LEN_TRIM and LNBLNK?
  • How can I use special characters in angular directives attributes?
  • Convert hex to utf in Python
  • what -j4 value is used to invoke make?
  • Prevent Emacs from modifying the OS X clipboard?
  • Read stdin in chunks in Bash pipe
  • Get or convert Week of year to ISO week
  • vi mode to emacs mode while on R
  • C++11 variable size POD struct
  • Autohotkey script running program with command line arguments
  • force json_encode to create strings
  • distinct values from multiple fields within one table ORACLE SQL
  • Select inner HTML item in CSS
  • Double-click autofill - dynamic based on adjacent cell
  • how to get data attributes of dynamically generated element
  • Responsive design method for collapsing a div
  • Iron Router: How do I send data to the layout?
  • Building Qt project for C++11 standard
  • Passing variable arguments using PowerShell's Start-Process cmdlet
  • Angular2 Response for preflight is invalid (redirect) from some GET requests
  • How do I configure context broker accept post requests from my remote sensor?
  • Keep this build forever option - Jenkins
  • How to define custom class, title, and target in Link Browser for content elements and the new rte_c
  • How do I access an unhandled exception in an MVC Error view?
  • Google Custom Search with transparent background
  • vba code to select only visible cells in specific column except heading
  • SVN: Merging two branches together
  • Hibernate gives error error as “Access to DialectResolutionInfo cannot be null when 'hibernate.
  • How to CLICK on IE download dialog box i.e.(Open, Save, Save As…)
  • Can Visual Studio XAML designer handle font family names with spaces as a resource?
  • To Get the radio button value in ruby on rails