x86 64 - Difference between x86, x32, and x64 architectures?
2015年9月19日 · Hans and DarkDust answer covered i386/i686 and amd64/x86_64, so there's no sense in revisiting them. This answer will focus on X32, and provide some info learned after a X32 port. x32 is an ABI for amd64/x86_64 CPUs using 32-bit integers, longs and pointers. The idea is to combine the smaller memory and cache footprint from 32-bit data types ...
Where is the x86-64 System V ABI documented? - Stack Overflow
2017年10月21日 · Related: What are the calling conventions for UNIX & Linux system calls (and user-space functions) on i386 and x86-64 describes the system-call calling convention for x86-64 SysV (as well as i386 Linux vs. FreeBSD). It also summarizes the …
See if System Type is 32-bit (x86) or 64-bit (x64) Windows 10
2021年7月25日 · How to Determine if Running 32-bit (x86) or 64-bit (x64) Architecture of Windows 10 The terms 32-bit and 64-bit refer to the way a computer's processor (also called a CPU), handles information. The benefits of using a 64-bit operating system are most apparent when you have a large amount of random access memory (RAM) installed on your computer ...
What is the difference between x64 and IA-64? - Stack Overflow
2019年7月14日 · IA-64 is the Intel Itanium Architecture. This is a Very Long Instruction Word (VLIW) processor instruction set. x86_64 is the normal 64-bit architecture that is used by processors inside every laptop / desktop in today's computers. This processor is a dynamic processor. The main difference between these two is that.
How is the x64 architecture different from x86 - Stack Overflow
2009年11月23日 · In x86 there are 8 32 bit registers, in x64 the registers are 64 bits each and there are 8 more of them. The 128 bit SSE registers are 128 bits in both, but on x86 there are 8 of them while in x64 there are 16 of them. Also some instructions were cut in x64. In x64 mode you can still use the registers as 32 bits by using their 32 bit name ...
What is the difference between x86_64 amd64 and 64 bit?
2015年3月26日 · 64-bit ISA or 64-bit processor that the length of address bus is 64 bits. Intel/AMD have variable length instructions - they vary from 1byte to 15 bytes. So, instruction length does not determine what type(32/64-bit) processor it is. x86_64 is name of specific 64-bit ISA. This instruction set was released in 1999 by AMD (Advanced Micro Devices).
c++ - Detecting CPU architecture compile-time - Stack Overflow
2018年10月18日 · If you want a cross-compiler solution then just use Boost.Predef which contains. BOOST_ARCH_ for system/CPU architecture one is compiling for. BOOST_COMP_ for the compiler one is using. BOOST_LANG_ for language standards one is compiling against. BOOST_LIB_C_ and BOOST_LIB_STD_ for the C and C++ standard library in use.
What do x86_64, i386, ia64 and other such jargons stand for?
2014年1月29日 · x86-64 is the name of the AMD extension added to i386 to make it capable of executing 64-bit code. This is the one you have. It is highly compatible with i386 and will execute a 32-bit program as fast as an i386 processor. ia64 is the name of the instruction set used in Itanium processors.
What registers are preserved through a linux x86-64 function call
I believe I understand how the linux x86-64 ABI uses registers and stack to pass parameters to a function (cf. previous ABI discussion). What I'm confused about is if/what registers are expected to be preserved across a function call. That is, what registers are …
Where can I find a list of x86_64 assembly instructions?
2017年4月26日 · As x86(_64) is a CISC processor, it has a big instruction set, but the compilers, unless you are optimizing, only use a "small" subset of it. You can check that disassembling binaries with objdump or your preferred disassembler.