Recent questions tagged assembly

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

assembly - How to calculate time for an asm delay loop on x86 linux?

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720 views 1 answer

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

assembly - Segmentation fault on printf - NASM 64bit Linux

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870 views 1 answer

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

assembly - Weird performance effects from nearby dependent stores in a pointer-chasing loop on IvyBridge. Adding an extra load speeds it up?

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547 views 1 answer

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

assembly - Distinguishing memory from constant in GNU as .intel_syntax

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663 views 1 answer

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

assembly - How to multiply a register by 37 using only 2 consecutive leal instructions in x86?

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783 views 1 answer

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

assembly - How are dw and dd different from db directives for strings?

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886 views 1 answer

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

assembly - Why does the x86-64 GCC function prologue allocate less stack than the local variables?

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691 views 1 answer

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

assembly - What are the segment and offset in real mode memory addressing?

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810 views 1 answer

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

assembly - Does a memory barrier ensure that the cache coherence has been completed?

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587 views 1 answer

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

assembly - VA (Virtual Address) & RVA (Relative Virtual Address)

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611 views 1 answer

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

assembly - x86 XOR opcode differences

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718 views 1 answer

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

assembly - How to tell the length of an x86 instruction?

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709 views 1 answer

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

assembly - Spinlock with XCHG unlocking

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698 views 1 answer

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

assembly - Is vxorps-zeroing on AMD Jaguar/Bulldozer/Zen faster with xmm registers than ymm?

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652 views 1 answer

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

assembly - Why is gcc generating an extra return address?

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753 views 1 answer

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

assembly - Why can't I mmap(MAP_FIXED) the highest virtual page in a 32-bit Linux process on a 64-bit kernel?

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763 views 1 answer

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

assembly - x86 Linux assembler get program parameters from _start

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748 views 1 answer

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

assembly - Near call/jump tables don't always work in a bootloader

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551 views 1 answer

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

assembly - How do I write a bin file (512 bytes) to the first sector (sector 0) of a floppy disk?

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766 views 1 answer

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

assembly - Why not store function parameters in XMM vector registers?

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614 views 1 answer

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

assembly - What does the bracket in `movl (%eax), %eax` mean?

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902 views 1 answer

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

assembly - Converting Int to Float or Float to Int using Bitwise operations (software floating point)

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770 views 1 answer

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

assembly - Questions about AT&T x86 Syntax design

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668 views 1 answer

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

assembly - Why is imul used for multiplying unsigned numbers?

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744 views 1 answer

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

assembly - What are the sizes of tword, oword and yword operands?

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863 views 1 answer

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

assembly - MOV src, dest (or) MOV dest, src?

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747 views 1 answer

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

assembly - Why does the PLT exist in addition to the GOT, instead of just using the GOT?

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724 views 1 answer

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

assembly - CPUID implementations in C++

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939 views 1 answer

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