Follow @Openwall on Twitter for new release announcements and other news
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Mon, 25 Jun 2018 15:38:52 -0700
From: Thomas Garnier <thgarnie@...gle.com>
To: kernel-hardening@...ts.openwall.com
Cc: Thomas Garnier <thgarnie@...gle.com>, Thomas Gleixner <tglx@...utronix.de>, 
	Ingo Molnar <mingo@...hat.com>, "H. Peter Anvin" <hpa@...or.com>, x86@...nel.org, 
	Josh Poimboeuf <jpoimboe@...hat.com>, Arnaldo Carvalho de Melo <acme@...hat.com>, 
	Philippe Ombredanne <pombredanne@...b.com>, Kees Cook <keescook@...omium.org>, 
	Andrey Ryabinin <aryabinin@...tuozzo.com>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
	linux-kernel@...r.kernel.org
Subject: [PATCH v5 04/27] x86: Add macro to get symbol address for PIE support

Add a new _ASM_MOVABS macro to fetch a symbol address. It will be used
to replace "_ASM_MOV $<symbol>, %dst" code construct that are not compatible
with PIE.

Signed-off-by: Thomas Garnier <thgarnie@...gle.com>
---
 arch/x86/include/asm/asm.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/include/asm/asm.h b/arch/x86/include/asm/asm.h
index 219faaec51df..4492a35fad69 100644
--- a/arch/x86/include/asm/asm.h
+++ b/arch/x86/include/asm/asm.h
@@ -30,6 +30,7 @@
 #define _ASM_ALIGN	__ASM_SEL(.balign 4, .balign 8)
 
 #define _ASM_MOV	__ASM_SIZE(mov)
+#define _ASM_MOVABS	__ASM_SEL(movl, movabsq)
 #define _ASM_INC	__ASM_SIZE(inc)
 #define _ASM_DEC	__ASM_SIZE(dec)
 #define _ASM_ADD	__ASM_SIZE(add)
-- 
2.18.0.rc2.346.g013aa6912e-goog

Powered by blists - more mailing lists

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.