1. Moving Data: IA32
• movx Source, Dest
• x is one of {b(1-byte), w(2-byte), l(4-byte)}
• Operand Types
• Immediate: Constant integer data
• Example: $0x400, $-533
• Like C constant, but prefixed with‘$’
• Register; one of 8 integer registers
• Example: %eax, %edx
• But %esp and %ebp reserved for special use
• Memory: 4 consecutive bytes of memory at address given by register
• Simplest example: (%eax)
• Various other “address modes”
2. 
3. Memory Addressing Modes: Basic
1. Indirect (R) Mem[Reg[R]]
2. Displacement D(R) Mem[Reg[R]+D]
4. Conditionals and Control Flow
5. Loops
6. Switch Statements

【2014-11-22】《The Hardware/Software Interface》– Section 4