标签[instructions]

有关真实CPU,VM或编译器IR的指令的问题。

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我如何解释simpleperfstat产生的指令计数,同一线程上的记录不相同?

I'm an engineer developing something on Android platform, hence using simpleperf is just something normal to assess thread performance.我是一名在 Android 平
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14

从VoiceInstructions对象播放当前/下一个语音方向?

I have built a "Resume Route" routine in case the app is closed before the route is completed.我已经建立了一个“恢复路线”例程,以防应用程序在路线完成之前关闭。 I am able to restore t
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格式化15个连续命令行方向的最佳方法?

(Apologies - I could not find an appropriate board for this question. If there is a better board, please tell me and I'll take this question there.) (
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汇编语言中源和目标的正确顺序

I just started learning computer organization and architecture.我刚开始学习计算机组织和体系结构。 Computer organization by Carl Hamacher, Zaki... is my reference textb
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108

在C++中使用uint64_t的上半部分的指令/内在?

Imagine following code:想象以下代码: Try it online! 在线试试吧!uint64_t x = 0x81C6E3292A71F955ULL;uint32_t y = (uint32_t) (x >> 32); y receives higher 32-b
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87

整数除法主要用于什么?

An analysis on https://ridiculousfish.com/blog/posts/benchmarking-libdivide-m1-avx512.html finds that the new Apple CPU has spent a lot of resources m
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44

ebpf:验证LD_ABS和LD_IND指令

I was reading the verifier code, in particular the part verifying safety of LD_ABS and LD_IND instructions (check_ld_abs()).我正在阅读验证器代码,特别是验证LD_ABS和LD_
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69

arm-linux-gnueabi-gcc坏指令strhlo,strhhsCortex-A9

I'm very new to arm and i'm trying to compile code for arm (Cortex-A9) using arm-linux-gnueabi-gcc.我对 arm 很陌生,我正在尝试使用 arm-linux-gnueabi-gcc 为 arm (Cor
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49

循环可以视为基本功能吗?[关闭]

Closed . 关门了。 This question is opinion-based . 这个问题是基于观点的。 It is not currently accepting answers. 它当前
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69

指令用垃圾覆盖吗?

I am practicing a function return address overwriting exploit.我正在练习函数返回地址覆盖漏洞。 However, the program instruction pointer instead gets overwritten by gi
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27

查找以mips为单位的数组的平均值时出现问题

I have recently started learning the Mips assembly language and was on its basics.我最近开始学习Mips汇编语言,并且是基于它的基础知识。 I had a few pronlems in finding the mea
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69

星形图案打印不好

I want to print star pattern in this way:我想以这种方式打印星形图案:*********************but it is printing this way:但是它是这样打印的:************************************
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指令在内存中的排列方式如何?

I'm taking an Computer Architecture and Organization class, and we're studying how the instructions are taken from memory and decoded (using an old IA
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57

Intel手册中的NE和I有什么区别?

In Intel's manual for Intel 64 and IA-32 instruction set section 3.1.1.5, it introduces 64/32-bit mode column in the instruction summary table.在Intel的
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32

当取指令的周期因指令而异时,如何得知控制信号?

If the first cycle of each instruction is not the same (ie not all instructions have the same fetch cycle), then how does the processor know what the
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55

MIPSlw指令到底能做什么?

Help!帮助! I am new to assembly and I am trying to find out what this command does我是汇编程序的新手,我试图找出此命令的作用lw %t5, 100($t8) Also I understand that the left
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为什么8位MUL合并为AX,而16位和32位MUL却将其结果分配给[E]DX:[E]AX?

MUL CL CL is BYTE size and it equals to AX = AL * CL MUL CL CL是字节大小,等于AX = AL * CL MUL BX BX is WORD size and it equals to DX:AX = AX * BX MUL BX BX
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47

内存堆栈:esp中的sub20

I am having trouble grasping the answer in this stackoverflow thread.我无法在这个 stackoverflow 线程中掌握答案。 https://stackoverflow.com/a/1395646 https://stackov
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78

机器指令到底是什么?

The user's program in main memory consists of machine instructions and data.主存储器中的用户程序由机器指令和数据组成。 In contrast, the control memory holds a fixed micro
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30

使用in_asm时确定Qemu来宾指令的来源

I'm trying to gather statistics about the percentage of library code that is used vs executed.我正在尝试收集有关已使用与已执行的库代码百分比的统计信息。 To do this I'm invoking Qe

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