diff mbox series

[4.14,48/99] ARC: define __ALIGN_STR and __ALIGN symbols for ARC

Message ID 20200319123956.481702270@linuxfoundation.org
State Superseded
Headers show
Series None | expand

Commit Message

Greg KH March 19, 2020, 1:03 p.m. UTC 
From: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>

commit 8d92e992a785f35d23f845206cf8c6cafbc264e0 upstream.

The default defintions use fill pattern 0x90 for padding which for ARC
generates unintended "ldh_s r12,[r0,0x20]" corresponding to opcode 0x9090

So use ".align 4" which insert a "nop_s" instruction instead.

Cc: stable@vger.kernel.org
Acked-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/arc/include/asm/linkage.h |    2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

--- a/arch/arc/include/asm/linkage.h
+++ b/arch/arc/include/asm/linkage.h
@@ -14,6 +14,8 @@ 
 #ifdef __ASSEMBLY__
 
 #define ASM_NL		 `	/* use '`' to mark new line in macro */
+#define __ALIGN		.align 4
+#define __ALIGN_STR	__stringify(__ALIGN)
 
 /* annotation for data we want in DCCM - if enabled in .config */
 .macro ARCFP_DATA nm