Date: Tue, 26 May 2015 06:20:13 +0300 From: Solar Designer <solar@...nwall.com> To: Rich Felker <dalias@...c.org> Cc: writeonce@...ipix.org, john-dev@...ts.openwall.com Subject: Re: update: JtR for Windows using musl libc On Mon, May 25, 2015 at 11:01:47PM -0400, Rich Felker wrote: > The argument registers for integer arguments are completely different > (rcx,rdx,r8,r9 vs rdi,rsi,rdx,rcx,r8,r9) so I would expect the > behavior to be nonsense. Oh, this must be it. rdi for the argument was my first thought, but I wrongly recalled that all of these functions use it. I just took a look, and the asm version of DES_bs_crypt_25 does not actually use its argument (even though it's called with one, since the C implementation sometimes uses it). So this is why descrypt and tripcode passed test. > Note that there's a GCC attribute, __sysv_abi__, that could be used to > call the standard ABI asm code from a caller that's using the MS ABI. > That would be a way to reuse the asm unmodified rather than having to > wrap it or write a special version for Windows. The attribute just > needs to be put on the declarations of the asm functions in the > translation units they're called from. midipix may try that. Alexander
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