Commit 5cccfc8b authored by Jens Remus's avatar Jens Remus Committed by Vasily Gorbik
Browse files

s390/vdso: Add CFI annotations to __arch_chacha20_blocks_nostack() 



This allows proper unwinding, for instance when using a debugger such
as GDB.

Signed-off-by: default avatarJens Remus <jremus@linux.ibm.com>
Signed-off-by: default avatarHeiko Carstens <hca@linux.ibm.com>
Acked-by: default avatarVasily Gorbik <gor@linux.ibm.com>
Signed-off-by: default avatarVasily Gorbik <gor@linux.ibm.com>
parent ff35a3f0

arch/s390/kernel/vdso64/vgetrandom-chacha.S

+3 −0
Original line number Diff line number Diff line
@@ -3,6 +3,7 @@ 
#include <linux/stringify.h>

#include <linux/linkage.h>

#include <asm/alternative.h>

#include <asm/dwarf.h>

#include <asm/fpu-insn.h>



#define STATE0	%v0
@@ -38,6 +39,7 @@ 
 *				       size_t nblocks)

 */

SYM_FUNC_START(__arch_chacha20_blocks_nostack)

	CFI_STARTPROC

	larl	%r1,.Lconstants



	/* COPY0 = "expand 32-byte k" */
@@ -177,4 +179,5 @@ SYM_FUNC_START(__arch_chacha20_blocks_nostack) 
	VPERM	TMP3,STATE3,STATE3,BEPERM

	VSTM	TMP0,TMP3,0,%r2

	j	.Lstoredone

	CFI_ENDPROC

SYM_FUNC_END(__arch_chacha20_blocks_nostack)