[PATCH RFC 02/43] x86: Add macro to get symbol address for PIE support

[Hou Wenlong]

From: Thomas Garnier <thgarnie@xxxxxxxxxxxx>

From: Thomas Garnier <thgarnie@xxxxxxxxxxxx>

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

Signed-off-by: Thomas Garnier <thgarnie@xxxxxxxxxxxx>
Signed-off-by: Hou Wenlong <houwenlong.hwl@xxxxxxxxxxxx>
Cc: Lai Jiangshan <jiangshan.ljs@xxxxxxxxxxxx>
Cc: Kees Cook <keescook@xxxxxxxxxxxx>
---
 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 fbcfec4dc4cc..05974cc060c6 100644
--- a/arch/x86/include/asm/asm.h
+++ b/arch/x86/include/asm/asm.h
@@ -35,6 +35,7 @@
 #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)
-- 
2.31.1