mips_cross_compiler

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mips_cross_compiler [2014/02/16 01:25] – [MIPS Cross Compiler build] changed script beckmanfmips_cross_compiler [2014/06/04 17:52] (current) – simple project added beckmanf
Line 91: Line 91:
  
 # Set the destination # Set the destination
-export MYMIPS=/home/fritz/site+export MYMIPS=${HOME}/site
  
 # Versions # Versions
Line 454: Line 454:
 </code> </code>
  
-=== Compile and Run ===+===== Compile and Run an example =====Ìý
 +Ìý
 +Here is an example mini c code to test the compiler. Ìý
 +Ìý
 +<code c hello.c>Ìý
 +/* Hello world */Ìý
 +#include <stdio.h>Ìý
 +Ìý
 +int myfunc(int a, int b){Ìý
 +  int k; Ìý
 +  k = a + b; Ìý
 +Ìý
 +  k += 7; Ìý
 +  k *= 6; Ìý
 +  return k; Ìý
 +}Ìý
 +Ìý
 +int main(){Ìý
 +  int i,j,m;  Ìý
 +  j = 3;Ìý
 +  m = 2;Ìý
 +  Ìý
 +  for(i=0;i<5;i++){Ìý
 +    m += myfunc(i,j);  Ìý
 +    printf("m is %d\n",m);Ìý
 +  }Ìý
 +  return 0;Ìý
 +}Ìý
 +</code>
  
 Compile to Assembler for viewing Compile to Assembler for viewing
  
-mipsel-none-elf-gcc -S fir.c+<code>Ìý
 +mipsel-none-elf-gcc -S hello.cÌý
 +</code>
  
-The output is fir.s which is the assembler code. +The output assembler code is in hello.s. 
  
 Compile and link ready for simulation with instruction set simulator Compile and link ready for simulation with instruction set simulator
  
-mipsel-none-elf-gcc -o fir -Tidt.ld fir.c+<code>Ìý
 +mipsel-none-elf-gcc -o hello -Tidt.ld hello.cÌý
 +</code>
  
 Run the code Run the code
  
-mipsel-none-elf-run fir+<code>Ìý
 +mipsel-none-elf-run helloÌý
 +</code>
  
 === Analyze === === Analyze ===
  
-Produce an annoted source code +Produce an annoted source code showing how often lines are executed. 
  
-gcc -fprofile-arcs -ftest-coverage -o fir fir.c+<code>Ìý
 +gcc -fprofile-arcs -ftest-coverage -o hello hello.cÌý
 +./helloÌý
 +gcov hello.cÌý
 +</code>
  
-./fir+This produces the file hello.c.gcov showing the annotated source file.  
  
-gcov fir.c +=== Tracing in instruction set simulator ===
  
 Run with instruction tracing in the simulator Run with instruction tracing in the simulator
  
 <code> <code>
-mipsel-none-elf-run --trace-insn=on --trace-file trace fir+mipsel-none-elf-gcc -Tidt.ld -o hello hello.cÌý
 +mipsel-none-elf-run --trace-insn=on --trace-file trace hello
 </code> </code>
  
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 make check-gcc RUNTESTFLAGS=--target_board=mips-sim make check-gcc RUNTESTFLAGS=--target_board=mips-sim
 </code> </code>
 +
 +===== Install git and download a simple project  =====
 +
 +Install git and download a simple project
 +
 +<code>
 +sudo apt-get install git
 +cd
 +mkdir projects
 +cd projects
 +git clone https://git.etech.fh-augsburg.de/friedrich.beckmann/myfirst.git
 +</code>
 +
 +Now you have the simple project "myfirst" in your directory. 
 +
 +=== Try the MIPS Cross Compiler ===
 +
 +Change to the src directory and compile the code with the cross compiler. 
 +
 +<code>
 +cd myfirst
 +cd src
 +mipsel-none-elf-gcc -S hello.c
 +less hello.s
 +</code>
 +
 +Now you have the compiled assembler code "hello.s". To compile to binary do: 
 +
 +<code>
 +mipsel-none-elf-gcc -o hello -Tidt.ld hello.c
 +</code>
 +
 +Now you have the binary "hello". You can run the binary in the instruction set simulator with
 +
 +<code>
 +mipsel-none-elf-run hello
 +</code>
 +
 +This will run the binary with the mips instruction set simulator. You should see "Hello World". 
 +
 +
  
 ===== Open OCD ===== ===== Open OCD =====
  
 [[dt_openocd]] [[dt_openocd]]
- 
  
  
  
  
  • mips_cross_compiler.1392510332.txt.gz
  • Last modified: 2014/02/16 01:25
  • by beckmanf