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POC++ inline Assembler help. (error c2400)
 

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  1. POC++ inline Assembler help. (error c2400)
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    <p>I'm using Visual Studio 2010. I wrote a program that does a simple Binary Search algorithm. I'm trying to convert it into assemble code. I used the Disassembler to get the assembly code. I'm trying to paste it into _asm. I've tried so many ways and it's just not working.</p> <p>I tried </p> <pre><code>_asm(" . . . ."); _asm( ); _asm{ } &lt;--- -Currently going with this way for c++. seems to work well. </code></pre> <p>seen somewhere online people saying put '\' at the end of each line. That hasn't worked for me.</p> <p>Here's the code. I'll comment where the errors are. well, I have 13 as of now. Some I won't list because they're the same as other errors. Once I fix one or 2 I should be able to fix them all. The orignal c++ code for the function is also in there.It's commented out.</p> <pre><code>bool binarySearch(int searchNum,int myArray[],int size){ _asm{ push ebp mov ebp,esp sub esp,0F0h push ebx push esi push edi lea edi,[ebp-0F0h] mov ecx,3Ch mov eax,0CCCCCCCCh rep stos dword ptr es:[edi] // 217: int first=0,last=size-1,middle; mov dword ptr [first],0 mov eax,dword ptr [size] // ERROR! Error 2 error C2400: inline assembler syntax error in 'second operand'; found ']' sub eax,1 mov dword ptr [last],eax // 218: bool found = false; mov byte ptr [found],0 // 220: while (first &lt;= last) mov eax,dword ptr [first] cmp eax,dword ptr [last] jg binarySearch+80h (0B51970h) //ERROR! Error 4 error C2400: inline assembler syntax error in 'second operand'; found '(' // 222: middle = (first + last)/2; mov eax,dword ptr [first] ; // Error 5 error C2400: inline assembler syntax error in 'opcode'; found '(' add eax,dword ptr [last] ; cdq sub eax,edx sar eax,1 mov dword ptr [middle],eax // 224: if(searchNum &gt; myArray[middle]) mov eax,dword ptr [middle] mov ecx,dword ptr [myArray] mov edx,dword ptr [searchNum] cmp edx,dword ptr [ecx+eax*4] jle binarySearch+61h (0B51951h) // Error 8 error C2400: inline assembler syntax error in 'opcode'; found '(' // 226: first = middle +1; mov eax,dword ptr [middle] add eax,1 mov dword ptr [first],eax jmp binarySearch+7Eh (0B5196Eh) // 228: else if (searchNum &lt; myArray[middle]) mov eax,dword ptr [middle] mov ecx,dword ptr [myArray] mov edx,dword ptr [searchNum] cmp edx,dword ptr [ecx+eax*4] jge binarySearch+7Ah (0B5196Ah) // 230: last = middle -1; mov eax,dword ptr [middle] sub eax,1 mov dword ptr [last],eax // 232: else jmp binarySearch+7Eh (0B5196Eh) // Error 18 error C2400: inline assembler syntax error in 'second operand'; found '(' // 233: return true; mov al,1 // Error 19 error C2400: inline assembler syntax error in 'opcode'; found '(' jmp binarySearch+82h (0B51972h) jmp binarySearch+32h (0B51922h) // Error 22 error C2400: inline assembler syntax error in 'opcode'; found '(' // 236: return false; xor al,al pop edi pop esi pop ebx mov esp,ebp pop ebp ret }; /* int first=0,last=size-1,middle; bool found = false; while (first &lt;= last) { middle = (first + last)/2; if(searchNum &gt; myArray[middle]) { first = middle +1; } else if (searchNum &lt; myArray[middle]) { last = middle -1; } else return true; } return false; */ } </code></pre>
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    1. USallstar
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      1. POC++ inline Assembler help. (error c2400)
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      1. VTDownMod
    1. COYou can't just copy generated assembly and paste into inline asm blocks. First of all - it is very likely that all addresses are not usable in your code.
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      1. POC++ inline Assembler help. (error c2400)
      1. USNemanja Boric
    2. COIf you are writing a whole function anyway, then I would recommend using masm and a separate source file. You don't even need to fiddle with custom settings, because in VS 2008+ you can create an empty file.asm and then import it into your project using "add existing item" and the build rules will be created automatically. The inline assembler is also a bit buggy (unless they improved it).
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      1. POC++ inline Assembler help. (error c2400)
      1. USDevolus
    3. COFor something this big, I recommend writing a separate assembly unit; don't inline with C or C++.
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      1. POC++ inline Assembler help. (error c2400)
      1. USThomas Matthews
 

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