x86-64

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Why decrement %rsp when everything can be done via registers?
Admin1
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2
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161
x86-64 instruction-set assembly gcc c
fnstenv on 64 bit returning wrong value?
user_118522360
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2
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202
x87 shellcode x86-64 assembly
Cpp uint32_fast_t resolves to uint64_t but is slower for nearly all operations than a uint32_t (x86_64). Why does it resolve to uint64_t?
user_113221310
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3
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178
microbenchmark abi x86-64 c++ types
Why is __int128_t faster than long long on x86-64 GCC?
user_129869290
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43
2
4834
integer-division x86-64 cpu-architecture c++ performance
Stack Corruption Detection using canary value
user_96234010
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2
2
1635
buffer-overflow x86-64 callstack stack c
Why does GCC allocate more space than necessary on the stack, beyond what's needed for alignment?
Admin1
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10
2
824
x86-64 stack-memory assembly gcc c
`push label` pushs [label], not the address of label (Rust asm!)
user_131328980
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3
1
359
rust x86-64 inline-assembly
In x86-64 asm: is there a way of optimising two adjacent 32-bit stores / writes to memory if the source operands are two immediate values?
user_63536110
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8
2
227
x86-64 micro-optimization assembly optimization
x86_64 Assembly: effects of the interrupt flag and TPR register
user_105042300
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3
1
199
windows-kernel interrupt x86-64 x86 assembly
What would stack alignment really be?
user_130603010
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3
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222
x86-64 operating-system x86 assembly c
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