64位有16个寄存器,32位只有8个。 但是32位使用e开头,而64位前8个使用了r开始。 64bit的寄存器名增加额外8个(r8 - r15),其低位分别用d,w,b指定长度。 32位使用栈帧来作为传递的参数的保存位置; 而64位使用寄存器,分别用rdi,rsi,rdx,rcx,r8,r9作为第1-6个参数。rax作为返回值 32位用ebp作为栈帧指针,...
Intel把支持32位的 x86指令集架构命名为ia-32(Intel Architecture 32bit)。实际上由于32位x86处理器的...
从1985年80386开始,intel通过对x86架构进行32位的扩展,实现了32位CPU,Intel把支持32位的 x86指令集架构命名为ia-32(Intel Architecture 32bit)。实际上由于32位x86处理器的统治性,术语“x86”几乎等于IA-32,即32位的x86或x86-32,例如Windows和 Linux发行版的32位命名都是x86(没特别说明是32位)。 该来的还是会...
x86-64 is a 64-bit superset of the x86 instruction set architecture. Because the x86-64 instruction set is a superset of the x86 instruction set, all instructions in the x86 instruction set can be executed by central processing units (CPUs) that implement the x86-64 instruction set; therefor...
Software come64-Bitor32-Bitversions. They are similar to each other but do not work the same when installed on the wrong version of Windows. A Windows computer with more than 4 GB of RAM will normally be the 64-bit version. Right-click onStart. ...
现时英特尔将其称为IA-32,全名为“Intel Architecture, 32-bit”,一般情形下指代32位的架构。 x86 (also known as 80x86[2] or the 8086 family[3]) is a family of complex instruction set computer (CISC) instruction set architectures[2] initially developed by Intel based on the Intel 8086 ...
IA-64 Intel Archtecture 64 bit intel提出的64位指令集,目前比较鸡肋。 IA-32 = i386 32位的X86指令集。我们用的32位系统大部分都是这个指令集,例如xp,win2k3等。从80386时代传承来的。 IA-32(short for "Intel Architecture, 32-bit", sometimes also calledi386[1][2])[3]is the32-bitversion of...
复杂,比如想根据平台不同可选择不同的安装文件,运行在x86平台上的Windows 32bit OS只能安装32bit文件,而运行在x64平台上的Windows 64bit OS则可以选择安装32bit或64bit(x64),但是运行在x64平台上的Windows 32bit OS又只能安装32bit了,最后,运行在IA64平台上的Windows 64bit则可以选择安装32bit和64bit(IA64)...
AP会从实模式开始,接着进入32位保护模式,因为现状系统都是64位的,接着还要立刻进入64位模式。前面...
Corflags field is a bit field and, Its following are of interest to us :1) 0x1(IL_ONLY) It means that assembly’s code is IL_ONLY that is it is pure IL thus it can be compiled to either 32 bit or 64 bit2) 0x2(32BIT_ONLY) means that assembly’s code must be compiled to ...