Date: Wed, 31 Jul 2013 06:25:19 +0400 From: Solar Designer <solar@...nwall.com> To: john-dev@...ts.openwall.com Subject: Re: Parallella: bcrypt Katja, On Wed, Jul 31, 2013 at 06:19:08AM +0400, Solar Designer wrote: > It looks like your code terminates abruptly, with no return from the > function. I am surprised it works at all. Does it possibly hit another > function body, execute that, and then return using its epilogue? %-) This appears to have been the case. Here's what the code looks like after I added the missing "rts" to my copy: 28a0: 946c 6503 ldrd r28,[sp,-0x18] 28a4: d56c 6503 ldrd r30,[sp,-0x1a] 28a8: 194f 0402 rts 000028ac <_e_get_coreid>: 28ac: 051f 0032 movfs r0,coreid 28b0: 194f 0402 rts So it looks like without a proper "rts" after _BF_encrypt2, it was nevertheless returning via the tiny _e_get_coreid function. Indeed, the speed has not measurably changed with my addition of proper "rts" (I am getting 1194 c/s). Alexander
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