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Ia32 instructions

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MessagePosté le: Dim 18 Fév - 13:27 (2018)    Sujet du message: Ia32 instructions Répondre en citant

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Intel® 64 and IA-32 Architectures. Software Developer's Manual. Volume 2 (2A, 2B, 2C & 2D):. Instruction Set Reference, A-Z. NOTE: The Intel 64 and IA-32 Architectures Software Developer's Manual consists of three volumes: Basic Architecture, Order Number 253665; Instruction Set Reference A-Z, Order Number 325383;.
The cmp instruction is really the same as the sub instruction (i.e. it subtracts its arguments), except that the result is not saved but only the condition to compare the Sign Flag (i.e. the topmost bit of the result) to the Overflow Flag, and check that the Zero Flag is unset, which is what the jg instruction does.
add instruction from other instructions We are not that concerned with machine code, but it's good to keep track of what needs to be encoded in an instruction. Page 9. IA32. 9. Adding bytes (8 bit registers) addb srcreg, dstreg. – treats the contents of both registers as 8 bit integers. – adds the contents of the two registers and
18 Nov 2008 Note that the IA32 instruction set is described in several large volumes made freely available by Intel. These volumes should not be read cover to cover, but should be used to look up particular technical details once you have read this introduction. In particular, volumes 2A and 2B describe every instruction
IA32 Assembly Instructions (Common ones). Page 1 of 2. Registers. %eax, %ebx, %ecx, %edx, %esi, %edi, %esp, %ebp. Operand Forms (for S & D). Type. Form. Value. Immediate. $Imm. Imm. Register. Ea. R[Ea]. Memory. Imm. M[Imm]. Memory. (Ea). M[R[Ea]]. Memory. Imm(Eb). M[Imm + R[Eb]]. Memory. (Eb,Ei). M[R[Eb] +
12 Oct 2016 Intel® 64 and IA-32 architectures software developer's manual combined volumes 2A, 2B, 2C, and 2D: Instruction set reference, A-Z. This document contains the . mitigation techniques. Intel® 64 and IA32 Architectures Performance Monitoring Events, Performance monitoring events for Intel processors.
This chapter is intended to be a reference you can use when programming in IA-32 assembly. It covers the most important aspects of the IA-32 architecture. 2.1 Assembly Language Statements. All assembly instructions, assembler directives and macros use the following format: [label] mnemonic [operands] [; comment].
IA32 instructions. Addressing modes. • Immediate. $val Val val: constant integer value movl $17, %eax. • Normal. (R). Mem[Reg[R]]. R: register R specifies memory address movl (%ecx), %eax. • Displacement. D(R). Mem[Reg[R]+D]. R: register specifies start of memory region. D: constant displacement D specifies offset.
Supporting Different Sizes in IA-32. • Three main data sizes. • Byte (b): 1 byte. • Word (w): 2 bytes. • Long (l): 4 bytes. • Separate assembly-language instructions. • E.g., addb, addw, and addl. • Separate ways to access (parts of) a register. • E.g., %ah or %al, %ax, and %eax. • Larger sizes (e.g., struct). • Manipulated in smaller…

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