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Re: Possible incorrect usage of STACKALIGN in kern_exec

To: tech-kern%netbsd.org@localhost
Subject: Re: Possible incorrect usage of STACKALIGN in kern_exec
From: Joerg Sonnenberger <joerg%britannica.bec.de@localhost>
Date: Tue, 24 Jan 2012 21:55:30 +0100

On Tue, Jan 24, 2012 at 03:30:37PM -0500, Matthew Mondor wrote:
> There is also a related PR but which is for threads stack alignment:
> lib/39465

That bug is wrong. NetBSD uses SYSV ABI and that mandates 4 Bytes
alignment for the stack. GCC versions before ~4.5 or so are just
completely broken in this regard.

Joerg

Follow-Ups:
- Re: Possible incorrect usage of STACKALIGN in kern_exec
  - From: David Holland
- Re: Possible incorrect usage of STACKALIGN in kern_exec
  - From: Matthew Mondor

References:
- Possible incorrect usage of STACKALIGN in kern_exec
  - From: Paul Fleischer
- Re: Possible incorrect usage of STACKALIGN in kern_exec
  - From: Martin Husemann
- Re: Possible incorrect usage of STACKALIGN in kern_exec
  - From: Matthew Mondor

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