[Valgrind-users] lahf

[Vincent Penquerc'h <Vin...@ar...>]

This instruction is not implemented (in 1.9.6), though its twin
sahf is (and is listed in FPU ops in vg_to_ucode.c though it's not
an FPU insn). I had a quick look at adding it, but the ucode
generation is not immediately obvious, though the HTML docs do
help getting started. So, is anyone doing this yet ?

Also, while checking that segment overrides were actually there :)
I noticed that the size override (db 66h) unconditionally sets the
operand size to 2, though it actually switches between 2 and 4,
depending on the default size. Is it an oversight, or just because
default 2 byte operand size is unsupported ?

Thanks

-- 
Vincent Penquerc'h