From mboxrd@z Thu Jan 1 00:00:00 1970 From: behanw@converseincode.com (behanw at converseincode.com) Date: Tue, 8 Jul 2014 13:16:12 -0700 Subject: [PATCH 2/6] arm: LLVMLinux: Use current_stack_pointer to calculate pt_regs address In-Reply-To: <1404850576-2006-1-git-send-email-behanw@converseincode.com> References: <1404850576-2006-1-git-send-email-behanw@converseincode.com> Message-ID: <1404850576-2006-3-git-send-email-behanw@converseincode.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 M??ller --- 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