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[96.50.97.138]) by mx.google.com with ESMTPSA id yx1sm2867621pab.5.2014.09.05.17.06.46 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 05 Sep 2014 17:06:48 -0700 (PDT) From: behanw@converseincode.com To: a.ryabinin@samsung.com, anurag19aggarwal@gmail.com, charlebm@gmail.com, cl@linux-foundation.org, dave.long@linaro.org, k.khlebnikov@samsung.com, linux@arm.linux.org.uk, linyongting@gmail.com, Nikolay.Borisov@arm.com, tglx@linutronix.de, tj@kernel.org, u.kleine-koenig@pengutronix.de Subject: [PATCH v2 2/7] arm: LLVMLinux: Use current_stack_pointer to calculate pt_regs address Date: Fri, 5 Sep 2014 17:06:12 -0700 Message-Id: <1409961977-11762-3-git-send-email-behanw@converseincode.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1409961977-11762-1-git-send-email-behanw@converseincode.com> References: <1409961977-11762-1-git-send-email-behanw@converseincode.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140905_170710_351540_C60683BF X-CRM114-Status: GOOD ( 10.18 ) X-Spam-Score: -0.8 (/) Cc: rric@kernel.org, will.deacon@arm.com, linux-kernel@vger.kernel.org, rostedt@goodmis.org, rabin@rab.in, Dave.Martin@arm.com, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-3.5 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_NONE,RP_MATCHES_RCVD,T_DKIM_INVALID,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Behan Webster Use the global current_stack_pointer to calculate the end of the stack for current_pt_regs() Signed-off-by: Behan Webster Signed-off-by: Mark Charlebois Reviewed-by: Jan-Simon Möller --- arch/arm/include/asm/ptrace.h | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/arch/arm/include/asm/ptrace.h b/arch/arm/include/asm/ptrace.h index 601264d..51622ba 100644 --- a/arch/arm/include/asm/ptrace.h +++ b/arch/arm/include/asm/ptrace.h @@ -154,9 +154,8 @@ static inline unsigned long user_stack_pointer(struct pt_regs *regs) return regs->ARM_sp; } -#define current_pt_regs(void) ({ \ - register unsigned long sp asm ("sp"); \ - (struct pt_regs *)((sp | (THREAD_SIZE - 1)) - 7) - 1; \ +#define current_pt_regs(void) ({ (struct pt_regs *) \ + ((current_stack_pointer | (THREAD_SIZE - 1)) - 7) - 1; \ }) #endif /* __ASSEMBLY__ */