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Message-Id: <1378503762-7236-1-git-send-email-behanw@converseincode.com>
Date:	Fri,  6 Sep 2013 17:42:40 -0400
From:	behanw@...verseincode.com
To:	linux@....linux.org.uk, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Cc:	behanw@...verseincode.com,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	David Howells <dhowells@...hat.com>,
	Catalin Marinas <catalin.marinas@....com>,
	Dave Jones <davej@...hat.com>
Subject: [PATCH] arm: LLVMLinux: Use __builtin_frame_address instead of named registers

From: Behan Webster <behanw@...verseincode.com>

The LLVMLinux Project is working to be able to build the Linux kernel with
clang/LLVM. With the release of LLVM 3.3 clang is now able to compile the Linux
kernel with a number of small patches (available from the LLVMLinux git repo).

Use the frame pointer to calculate the end of the stack for current_pt_regs()
The existing code uses the stack pointer to do this calculation.
Using the frame pointer yeilds the same value in a more portable way.
This change supports being able to compile the kernel with gcc and clang.

Behan Webster (1):
  arm: LLVMLinux: Calculate pt_regs address from fp

 arch/arm/include/asm/ptrace.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

-- 
1.8.1.2

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