x86-64

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Why does 8-bit MUL combine into AX but 16 and 32-bit MUL leave their result split between [E]DX:[E]AX?
Admin1
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4
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403
x86-16 multiplication instructions x86-64 assembly
Is it possible to access more than 4GB of RAM in unreal mode?
user_105057780
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4
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175
memory-segmentation osdev x86-64 x86 assembly
How does a 64-bit computer change one byte in memory?
user_56096850
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2
2
187
x86-64 assembly memory cpu-architecture c
lscpu and cpuid say I have AVX2, but vpsllvw does not work
user_97126270
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2
1
335
cpuid avx2 x86-64 assembly
x86-64 assembly online, with an IDE such as https://www.mycompiler.io/new/asm-x86_64
user_85658720
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2
1
1293
x86-64 assembly ide
x86-64 System V abi - argument classification for parameter passing
user_62097030
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5
1
471
abi x86-64 calling-convention linux c
Why does the Windows x64 calling convention require XMM (FP) args copied to integer registers, for variadic functions like printf?
user_10299560
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2
0
103
x86-64 calling-convention floating-point assembly windows
Inconsistent `perf annotate` memory load/store time reporting
user_4853430
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2
1
149
perf x86-64 micro-optimization assembly performance
How to simplify a function referencing itself as argument ? (and what does this mean)
user_14473890
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3
1
403
ida x86-64 disassembly reverse-engineering assembly
Different machine code for empty default constructor v. implicitly-defined one
user_2624030
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6
1
115
c++20 x86-64 gcc optimization c++
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