More Related Contents:
- Why isn’t the instruction pointer a normal register usable with MOV or ADD?
- What is the purpose of segment registers in x86 protected mode?
- Is a mov to a segmentation register slower than a mov to a general purpose register?
- Why do x86-64 instructions on 32-bit registers zero the upper part of the full 64-bit register?
- Micro fusion and addressing modes
- Why doesn’t GCC use partial registers?
- How exactly do partial registers on Haswell/Skylake perform? Writing AL seems to have a false dependency on RAX, and AH is inconsistent
- How do AX, AH, AL map onto EAX?
- Why isn’t movl from memory to memory allowed?
- What is the stack engine in the Sandybridge microarchitecture?
- What is a Partial Flag Stall?
- Slow jmp-instruction
- Why is there not a register that contains the higher bytes of EAX?
- What do the E and R prefixes stand for in the names of Intel 32-bit and 64-bit registers?
- What does “DS:[40207A]” mean in assembly?
- What are the names of the new X86_64 processors registers?
- What are the segment and offset in real mode memory addressing?
- What’s the purpose of the rotate instructions (ROL, RCL on x86)?
- Why flush the pipeline for Memory Order Violation caused by other logical processors?
- Why does Intel hide internal RISC core in their processors?
- How to determine if the registers are loaded right to left or vice versa
- x86 Calculating AX given AH and AL?
- Why are x86 registers named the way they are?
- What is instruction fusion in contemporary x86 processors?
- x86 32 bit opcodes that differ in x86-x64 or entirely removed
- Why can I access lower dword/word/byte in a register but not higher?
- Segment size in x86 real mode
- Assembly x86 registers signed or unsigned
- How does the CPU know how many bytes it should read for the next instruction, considering instructions have different lengths?
- Is processor can do memory and arithmetic operation at the same time?