Fwd: Re: zlib-1.1.4 out - security fix

Ian Molton spyro at armlinux.org
Tue Mar 12 16:36:54 PST 2002


On a sunny Tue, 12 Mar 2002 19:08:34 -0500 Don Smith gathered a sheaf of
electrons and etched in their motions the following immortal words:

> About the time you  were using BALR, I was using LMJ's and LBJ's on
> UNIVACs. 128 registers of which 44 were directly modifiable in user
> mode. Just leave your return address in a register, no need for slow
> memory accesses.

The ARM BL instruction does that - it copies PC (which is actually the
'next' insn pointer) into r14.
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