Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755461AbbGQRDw (ORCPT ); Fri, 17 Jul 2015 13:03:52 -0400 Received: from mx1.redhat.com ([209.132.183.28]:59021 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753337AbbGQQ53 (ORCPT ); Fri, 17 Jul 2015 12:57:29 -0400 From: Josh Poimboeuf To: Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" Cc: Michal Marek , Peter Zijlstra , Andy Lutomirski , Borislav Petkov , Linus Torvalds , Andi Kleen , Pedro Alves , x86@kernel.org, live-patching@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [RFC PATCH 03/21] x86/asm: Add C versions of FRAME and ENDFRAME macros Date: Fri, 17 Jul 2015 11:47:19 -0500 Message-Id: <134e0c62c4c837a8d377a3c12dee6bcb752c60d1.1437150175.git.jpoimboe@redhat.com> In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1402 Lines: 55 Add C versions of the FRAME and ENDFRAME macros which can be used to create a stack frame in inline assembly. Signed-off-by: Josh Poimboeuf --- arch/x86/include/asm/frame.h | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) diff --git a/arch/x86/include/asm/frame.h b/arch/x86/include/asm/frame.h index a9438cd..bfe96e3 100644 --- a/arch/x86/include/asm/frame.h +++ b/arch/x86/include/asm/frame.h @@ -1,10 +1,10 @@ #ifndef _ASM_X86_FRAME_H #define _ASM_X86_FRAME_H -#ifdef __ASSEMBLY__ - #include +#ifdef __ASSEMBLY__ + /* * These are stack frame creation macros. They should be used by every * callable non-leaf asm function to make kernel stack traces more reliable. @@ -22,5 +22,21 @@ .endif .endm +#else /* !__ASSEMBLY__ */ + +#ifdef CONFIG_FRAME_POINTER + +#define FRAME \ + "push %" _ASM_BP ";" \ + _ASM_MOV "%" _ASM_SP ", %" _ASM_BP ";" + +#define ENDFRAME "pop %" _ASM_BP ";" + +#else /* !CONFIG_FRAME_POINTER */ + +#define FRAME "" +#define ENDFRAME "" + +#endif /* CONFIG_FRAME_POINTER */ #endif /* __ASSEMBLY__ */ #endif /* _ASM_X86_FRAME_H */ -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/