[flac-dev] PATCH: match calls and returns
lvqcl
lvqcl.mail at gmail.com
Fri Jan 3 05:47:47 PST 2014
According to Agner Fog, "...you must make sure that all calls
are matched with returns. Never jump out of a subroutine without
a return and never use a return as an indirect jump."
(see paragraph 3.15 in microarchitecture.pdf and
examples 3.5a and 3.5b in optimizing_assembly.pdf)
Basically this patch replaces
call .get_eip0
.get_eip0:
pop eax
with
call .mov_eip_to_eax
.get_eip0:
and
.mov_eip_to_eax:
mov eax, [esp]
ret
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