Date: Thu, 31 Oct 2013 00:13:41 +0100 From: magnum <john.magnum@...hmail.com> To: john-dev@...ts.openwall.com Subject: Re: Compile john in Windows 64 bits On 2013-10-30 19:15, magnum wrote: > We are trying to resolve BSDIcrypt problems on Win64. It seems to get > stuck somewhere in an endless loop on Win64. DEScrypt, LM and Deepika's > formats are fine. > > I can't see any pop corresponding to this push: > > DES_bs_finalize_keys_25: > leaq DES_bs_crypt_25_body(%rip),tmp1 > pushq tmp1 > DES_bs_finalize_keys: > ... > > What's with that? I'm not dumb, just slow. There's a ret corresponding to it! This pushes a return address pointing to DES_bs_crypt_25_body. > And while we're at it, > > DES_bs_crypt: > cmpl $0,DES_bs_all_keys_changed(%rip) > jz DES_bs_crypt_body > pushq %rdi > call DES_bs_finalize_keys > popq %rdi > > What good does the push/pop of %rdi do here? I can't see it being used > anywhere. Gotcha. This must be our Win64 problem! This preserves 'iterations' which is defined as %edi. Since %rdi is non-volatile on Win64 I redefined iterations to %ecx on that platform without changing the above. magnum
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