opcode

What exactly does the 3 operand imul instruction do in ia-32 assembly?

I'm reading the instruction imul 0xffffffd4(%ebp, %ebx, 4), %eax and I'm baffled by what it's doing exactly. I understand that imul multiplies, but I can't figure out the syntax. ...

x86 intel opcode assembly

Is there a way to write a program using pure x86 intel opcodes instead of the assembly mnemonics and instructions and then compile it with ML and LINK. For example if I try and write a 55 instead of push ebp ML thinks it is an integer. Does it require a special compiler or how would you write an opcode program and compile it. ...

Ignore caching of a specific file with APC

Is there a way to prevent a specific file from being opcode cached with APC? The use case is as follows: An application that sits on the cloud, which dynamically resizes itself (spinning up and down servers as required). The config.php script must know of the new IPs as they become available or unavailable. Since these changes happen f...