Recent questions tagged assembly

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assembly - How to write an absolute target for a near direct relative call/jmp in MASM

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

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assembly - How to code a far absolute JMP/CALL instruction in MASM?

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

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1 answer 688 views

assembly - How to read image file and display on screen in windows tasm dosbox

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

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1 answer 892 views

assembly - Why can't I move directly a byte to a 64 bit register?

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

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1 answer 708 views

assembly - Counting 1 bits (population count) on large data using AVX-512 or AVX-2

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

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1 answer 736 views

assembly - How do vararg functions find out the number of arguments in machine code?

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

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assembly - tasm: operand type does not match

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

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assembly - Unexpectedly poor and weirdly bimodal performance for store loop on Intel Skylake

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

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1 answer 633 views

assembly - What is the latency and throughput of the RDRAND instruction on Ivy Bridge?

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

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1 answer 702 views

assembly - Which is a better write barrier on x86: lock+addl or xchgl?

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

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assembly - What do the brackets mean in x86 asm?

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

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assembly - What are IN & OUT instructions in x86 used for?

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

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1 answer 624 views

assembly - Does it make any sense to use the LFENCE instruction on x86/x86_64 processors?

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

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1 answer 638 views

assembly - Turn float into string

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

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1 answer 699 views

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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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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1 answer 517 views

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 638 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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1 answer 735 views

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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1 answer 860 views

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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1 answer 672 views

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 786 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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1 answer 563 views

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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1 answer 592 views

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 689 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 688 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 677 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 631 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 719 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 736 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 725 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 538 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 734 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 594 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 874 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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