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Re: How is the definition of stack canary on MIPS arch?

From: David Daney <ddaney at caviumnetworks dot com>
To: Adam Jiang <jiang dot adam at gmail dot com>
Cc: Richard Henderson <rth at redhat dot com>, gcc at gcc dot gnu dot org
Date: Mon, 30 Aug 2010 10:43:44 -0700
Subject: Re: How is the definition of stack canary on MIPS arch?
References: <20100830104537.GA13111@rcwf64-moto> <4C7BE059.7030702@redhat.com>

On 08/30/2010 09:46 AM, Richard Henderson wrote:

On 08/30/2010 03:45 AM, Adam Jiang wrote:

When I read the source in Linux kerne, it was said that stack canary for
implementing stack protector is defined as an offset to %gs on x86
architecture. How about stack canary defined on MIPS?

It's not implemented for MIPS.

For the Linux kernel, the MIPS stack canary would be a constant offset (that depends on PAGE_SIZE) from register $28.

David Daney

Follow-Ups:
- Re: How is the definition of stack canary on MIPS arch?
  - From: Adam Jiang

References:
- How is the definition of stack canary on MIPS arch?
  - From: Adam Jiang
- Re: How is the definition of stack canary on MIPS arch?
  - From: Richard Henderson

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