[PATCH 2/6] arm: LLVMLinux: Use current_stack_pointer to calculate pt_regs address
From: behanw at converseincode.com <hidden>
Date: 2014-07-08 20:16:50
Also in:
lkml
Subsystem:
arm port, ptrace support, the rest · Maintainers:
Russell King, Oleg Nesterov, Linus Torvalds
From: Behan Webster <redacted> Use the global current_stack_pointer to calculate the end of the stack for current_pt_regs() Signed-off-by: Behan Webster <redacted> Signed-off-by: Mark Charlebois <redacted> Reviewed-by: Jan-Simon M??ller <redacted> --- 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__ */
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1.9.1