From: behanw@converseincode.com
To: anurag19aggarwal@gmail.com, catalin.marinas@arm.com,
charlebm@gmail.com, dave.long@linaro.org,
k.khlebnikov@samsung.com, linux@arm.linux.org.uk,
linyongting@gmail.com, Nikolay.Borisov@arm.com,
tglx@linutronix.de, u.kleine-koenig@pengutronix.de,
will.deacon@arm.com
Cc: behanw@converseincode.com, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, rabin@rab.in, rostedt@goodmis.org,
dwmw2@infradead.org
Subject: [PATCH 2/6] arm: LLVMLinux: Use current_stack_pointer to calculate pt_regs address
Date: Tue, 8 Jul 2014 13:16:12 -0700 [thread overview]
Message-ID: <1404850576-2006-3-git-send-email-behanw@converseincode.com> (raw)
In-Reply-To: <1404850576-2006-1-git-send-email-behanw@converseincode.com>
From: Behan Webster <behanw@converseincode.com>
Use the global current_stack_pointer to calculate the end of the stack for
current_pt_regs()
Signed-off-by: Behan Webster <behanw@converseincode.com>
Signed-off-by: Mark Charlebois <charlebm@gmail.com>
Reviewed-by: Jan-Simon M??ller <dl9pf@gmx.de>
---
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 c877654..45bc592 100644
--- a/arch/arm/include/asm/ptrace.h
+++ b/arch/arm/include/asm/ptrace.h
@@ -148,9 +148,8 @@ 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__ */
--
1.9.1
next prev parent reply other threads:[~2014-07-08 20:16 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-08 20:16 [PATCH 0/6] LLVMLinux: Patches to enable the kernel to be compiled with clang/LLVM behanw
2014-07-08 20:16 ` [PATCH 1/6] arm: LLVMLinux: Add global named register current_stack_pointer for ARM behanw
2014-07-08 20:16 ` behanw [this message]
2014-07-08 20:16 ` [PATCH 3/6] arm: LLVMLinux: Use current_stack_pointer for return_address behanw
2014-07-08 20:16 ` [PATCH 4/6] arm: LLVMLinux: Use current_stack_pointer in save_stack_trace_tsk behanw
2014-07-08 20:16 ` [PATCH 5/6] arm: LLVMLinux: Calculate current_thread_info from current_stack_pointer behanw
2014-07-08 20:16 ` [PATCH 6/6] arm: LLVMLinux: Use current_stack_pointer in unwind_backtrace behanw
2014-07-09 9:57 ` [PATCH 0/6] LLVMLinux: Patches to enable the kernel to be compiled with clang/LLVM Will Deacon
2014-07-09 11:24 ` Jan-Simon Möller
2014-07-13 9:10 ` Nicolas Pitre
2014-07-17 4:17 ` Behan Webster
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