When we make a function call, certain assembly instructions are always executed. These instructions that are executed when a function is called are called the function prologue. And, when the function exits, again certain assembly instructions are always executed....
When we call a function, the local variables and parameters of the function are stored in a stack. In x86 64-bit architecture or x64, the RBP register contains the base address of the stack. And, the RSP register contains the address of the top of the stack. When we...
BYTE PTR, WORD PTR, DWORD PTR, and QWORD PTR are directives in x86 and x64 assembly that specify the referenced data is 8-bit, 16-bit, 32-bit, or 64-bit in size. For example, mov DWORD PTR [rax],0x1 The above assembly instruction specifies that the 32-bit value 0x1...
An x86 assembly instruction has the following format: [label:] mnemonic [operands] [;comment] Label A label specifies the numeric address of data or code. For example, L1: MOV RAX, RBX Here, L1 is a label that specifies the address of the instruction. Later, we can...
What are little-endian and big-endian formats? Let’s say we are storing the multibyte data 0x12345678 in computer memory. Now, we can do so in two different ways. We can store the least significant byte of the multibyte data first and the most significant byte of the...
Please follow the link below to buy The Security Buddy Premium Membership.
