(32位:8个通用寄存器,包括EBP和ESP)64-bit: 16 GPRs, including RBP and RSP(64位:16个通用寄存器,包括RBP和RSP) Floating point(浮点运算) 16-bit: optional separate x87 FPU(16位:可选的独立x87浮点单元)32-bit: optional separate or integrated x87 FPU, integrated SSE units in later processors(...
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)。
eax 寄存器用于函数结果的<=32位的返回值。如果结果是64为的,那么如果储存在 edx:eax 寄存器对中。 下面是 x86 体系架构的调用约定项: Win32( __stdcall ) 函数的参数是通过从右向左的传入栈中,并且是在被调用函数(callee)中清理栈的。 C++内置的方法调用(大家了解的:thiscall) 函数参数也是从右向左传入栈,...
qword: 64 bits (includes floating-point doubles) tword: 80 bits (includes floating-point extended doubles) oword: 128 bits Notation The following table indicates the notation used to describe assembly language instructions. NotationMeaning r,r1,r2... ...
> 32-bit and 64-bit systems. > Hi Jonathan, I have a question about your comments above: Raymond have told me he already set the kmem_flags = 0xf in the system, why the kmem cache debug flags are still different between 32bit and ...
seems to mean different thing between 32/64 bit kernels. I allocated mbuf of 1600 bytes, In 64-bit mode, the cache name of 2048 should have name of "streams_dblk_1936", output like below: cache buf buf buf memory alloc alloc
2.12协议:在struct boot_params中增加了xloadflags字段和扩展字段,用于在64bit中加载bzImage和4G以上的ramdisk。 2.13协议:kernel 3.14 支持在xloadflags中设置32位和64位标志,以支持从32位EFI引导64位内核 2.14协议:有问题,假设同 2.13 2.15协议:kernel 5.5 增加kernel_info和kernel_info.setup_type_max。
This littlextrick often makes programs shorter, because adding small-value constants to 16 or 32 bit operands is very common. The third difference between theADD-immediate and the standardADDinstruction is the meaning of theREGfield in theMOD-REG-R/Mbyte: ...
Condition NameFlagsMeaning after a CMP operation. E ZF=1 value1 == value2. NE ZF=0 value1 != value2. GE NL SF=OF value1 >= value2. Values are treated as signed integers. LE NG ZF=1 or SF!=OF value1 <= value2. Values are treated as signed integers. G NLE ZF=0 and SF=...
The bit length of the immediate value is determined by the current architecture (i.e., 32 bits for 32-bit systems and 64 bits for 64-bit systems) and can be overriden by adding a size prefix in the place reserved for the instruction prefixes. Throughout the rest of the tutorial, we'...