fbstp destination question

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shoorick

Joined: 25 Feb 2005
Posts: 1614
Location: Ukraine

shoorick 04 Dec 2006, 10:17

there is ok:

Code:

    lea ecx,[a_buff + 10]
    fbstp [ecx]

there is wrong:

Code:

    fbstp [a_buff + 10]
error: invalid size of operand.

is it possible to specify direct memory operand and how if yes?
thnx

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04 Dec 2006, 10:17

vid
Verbosity in development

Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia

vid 04 Dec 2006, 11:08

i bet you have some size assigned with "a_buff". If you don't have proper size operator, you can do something like this:

Code:

label x at a_buff
fbstp [x+10]

i know, ugly Sad

04 Dec 2006, 11:08

shoorick

Joined: 25 Feb 2005
Posts: 1614
Location: Ukraine

shoorick 04 Dec 2006, 11:13

really: a_buff is rb
with your help i solved with this:
...
f_buff:
a_buff rb 520
...
fbstp [f_buff]

it was test situation, but i'd wish to have clear solution for one
thnx

04 Dec 2006, 11:13

shoorick

Joined: 25 Feb 2005
Posts: 1614
Location: Ukraine

shoorick 04 Dec 2006, 11:46

well, proper way:

fbstp tbyte [a_buff]

Smile

04 Dec 2006, 11:46

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