Recent questions tagged assembly

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assembly - Does a function with instructions before the entry-point label cause problems for anything (linking)?

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

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1 answer 963 views

assembly - Why in NASM do we have to use square brackets ([ ]) to MOV to memory location?

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

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1 answer 872 views

assembly - What's the real meaning of $$ in nasm

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

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1 answer 1.0k views

assembly - Why don't x86 16-bit addressing modes have a scale factor, while the 32-bit version has it?

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

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1 answer 749 views

assembly - Why does my data section appear twice in the compiled binary? Ubuntu, x86, nasm, gdb, reaelf

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

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1 answer 815 views

assembly - Why "DIV EDX" in MASM always generates processor exception?

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

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1 answer 900 views

assembly - How do GNU assembler x86 instruction suffixes like ".s" in "mov.s" work?

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

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1 answer 687 views

assembly - Cannot call real mode C function from bootloader (NASM + GCC toolchain)

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

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1 answer 719 views

assembly - Hard to debug SEGV due to skipped cmov from out-of-bounds memory

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

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1 answer 870 views

assembly - What comes after QWORD?

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

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1 answer 656 views

assembly - What is the significance of operations on the register EAX having their own opcodes?

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

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1 answer 715 views

assembly - Should pointer comparisons be signed or unsigned in 64-bit x86?

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

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1 answer 789 views

assembly - Embed assembler to manipulate 64-bit registers in portable C++

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

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1 answer 948 views

assembly - On x64 Linux, what is the difference between syscall, int 0x80 and ret to exit a program?

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

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1 answer 980 views

assembly - Detail about MSR_GS_BASE in linux x86 64

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

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1 answer 894 views

assembly - Encoding ADC EAX, ECX - 2 different ways to encode? (arch x86)

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

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1 answer 711 views

assembly - What's the easiest way to determine if a register's value is equal to zero or not?

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

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1 answer 878 views

assembly - I don't understand how to use Interrupt 21, AH=0ah

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

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1 answer 751 views

assembly - What is the ".s" suffix in x86 instructions?

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

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1 answer 847 views

assembly - Are ARM instructuons SWI and SVC exactly same thing?

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

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1 answer 753 views

assembly - How to store a two-register mul result into memory

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

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1 answer 690 views

assembly - Does a memory barrier acts both as a marker and as an instruction?

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

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1 answer 899 views

assembly - Reverse byte order of EAX register

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

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1 answer 1.3k views

assembly - Convert string to int. x86 32 bit Assembler using Nasm

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

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1 answer 750 views

assembly - Why do x86 jump/call instructions use relative displacements instead of absolute destinations?

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

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1 answer 1.2k views

assembly - Cannot move 8 bit address to 16 bit register

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

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1 answer 721 views

assembly - What is the compatible subset of Intel's and AMD's x86-64 implementations?

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

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1 answer 692 views

assembly - Does Skylake need vzeroupper for turbo clocks to recover after a 512-bit instruction that only reads a ZMM register, writing a k mask?

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

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