最近在學習彙編，為了方便寫了一個shell指令碼，用來把c語言轉換為組合語言。很方便。

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shell指令碼

#!/bin/bash  
if [  "$#" = "0" ] ; then
        echo 'help: c2asm FILENAME'  
        exit 1;
fi


if [ -f "$1" ] ; then
        echo 'check file ok!'  
else
        echo 'c2asm: file not exist'  
        exit 1;
fi
echo 'generating asm file...'
 
  
gcc -O0 -S "$1"
tmp=$1
asmfile=${tmp%%.c}.s;

echo "asm file generated: $asmfile"  
echo '==================asm===================='  
cat "$asmfile" | grep -v '\.'
echo '==================c======================'  
cat "$1"
echo '==================END===================='  
echo 'done'  

使用效果

check file ok!
generating asm file...
asm file generated: main.s
==================asm====================
main:
    pushq   %rbp
    movq    %rsp, %rbp
    movl    $1, -8(%rbp)
    movl    $1, -4(%rbp)
    movl    -8(%rbp), %edx
    movl    -4(%rbp), %eax
    addl    %edx, %eax
    popq    %rbp
 

    ret
==================c======================

int main()
{
    int a,b;
    a = 1;
    b = 1;
    return a+b;

}
==================END====================
done