:> function A calls function B which uses ecx as a loop index. The bad part is
:function B never
:> saves/restores the value of ecx and function A starts dereferencing garbage.
:>
:> An informal sampling of my driver seems to indicate that ebx gets
:> pushed/poped at entry/exit but ecx and edx don't. Does any of this
:> sound familiar? Thanks!
:
:Yes, eax, ebx, and edx are not "call-safe" registers. If you are writing
:your own function in assembly and you call a function you need to either
:save those registers yourself or reload their values. If you are writing
:...
:John Baldwin <[EMAIL PROTECTED]> <>< http://www.FreeBSD.org/~jhb/
:"Power Users Use the Power to Serve!" - http://www.FreeBSD.org/
I think you meant ecx there. eax, ecx, and edx are not call safe.
ebx is.
-Matt
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