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cpuid汇编指令 - C/C++ - 清泛网 - 专注C/C++及内核技术
...86家族CPU都有这个指令我也不是很清楚，但在EFLAGS中的bit 21可以识别CPU是否支持CPUID指令，如下图：
图1
在8086和8088CPU中，FLAGS只有16位长，在80386CPU中，bit 21被保留未用，在支持CPUID指令的CPU中，这一位将为1。
2、CP...
Does Python have an ordered set?
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answered Dec 6 '18 at 18:21
jrcjrc
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fork() branches more than expected?
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answered Jun 21 '12 at 6:58
wallykwallyk
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How to convert PascalCase to pascal_case?
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cletuscletus
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Why does the C preprocessor interpret the word “linux” as the constant “1”?
...took advantage of the predefined unix macro:
main() { printf(&unix["\021%six\012\0"],(unix)["have"]+"fun"-0x60);}
It prints "unix", but for reasons that have absolutely nothing to do with the spelling of the macro name.
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Reload Flask app when template file changes
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edited May 9 '19 at 21:50
Eric Reed
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How to get everything after a certain character?
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Keshav Pradeep Ramanath
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AdyAdy
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When saving, how can you check if a field has changed?
...nd against it.
– Josh
Nov 23 '12 at 21:18
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How many GCC optimization levels are there?
...5.7307 4.9328 45.2525 4.66231 44.6595 4.66231C43.6264 4.66231 43.1481 5.28821 43.1481 6.59048V11.9512C43.1481 13.2535 43.6264 13.8962 44.6595 13.8962C45.6924 13.8962 46.1709 13.2535 46.1709 11.9512V9.17788Z\"/\u003e\u003cpath d=\"M32.492 10.1419C32.492 12.6954 34.1182 14.0484 37.0451 14.0484C39.9723...
Difference between int32, int, int32_t, int8 and int8_t
...more).
– Jerry Coffin
Oct 19 '15 at 21:33
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I was always under the impression that one byte was e...