Recent questions tagged assembly

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

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

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1 answer 841 views

assembly - Segmentation fault on printf - NASM 64bit Linux

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

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

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

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1 answer 633 views

assembly - Distinguishing memory from constant in GNU as .intel_syntax

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

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

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

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

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

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

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

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1 answer 785 views

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

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

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

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

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

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

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1 answer 688 views

assembly - x86 XOR opcode differences

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

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1 answer 687 views

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

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

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1 answer 673 views

assembly - Spinlock with XCHG unlocking

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

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1 answer 629 views

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

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

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1 answer 718 views

assembly - Why is gcc generating an extra return address?

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

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1 answer 735 views

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

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

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1 answer 724 views

assembly - x86 Linux assembler get program parameters from _start

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

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1 answer 536 views

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

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

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1 answer 732 views

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

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

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1 answer 592 views

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

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

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1 answer 873 views

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

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

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1 answer 747 views

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

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

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1 answer 648 views

assembly - Questions about AT&T x86 Syntax design

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

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1 answer 723 views

assembly - Why is imul used for multiplying unsigned numbers?

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

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1 answer 847 views

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

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

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1 answer 732 views

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

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

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1 answer 700 views

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

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

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1 answer 917 views

assembly - CPUID implementations in C++

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

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