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flat assembler > Windows > compare auxiliary flag

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Ali.A



Joined: 08 Jan 2018
Posts: 85
is this the best way to compare af?
jnz - jumps if af was set?
Code:
pushf pop ax test al,0x10 jnz

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Asm For Wise Humans
Post 28 Jun 2018, 12:45
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revolution
When all else fails, read the source


Joined: 24 Aug 2004
Posts: 15871
Location: 162173 Ryugu
There is also lahf. But I don't know what you mean by "best", because lahf is not available in all CPU modes, so maybe it isn't good for you.
Code:
lahf test ah,0x10 jnz ...
Post 28 Jun 2018, 12:49
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Ali.A



Joined: 08 Jan 2018
Posts: 85
my cpu:
LAHF/SAHF support in 64-bit mode

thanks again rev, you are cool.

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Asm For Wise Humans
Post 28 Jun 2018, 13:18
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