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Commit fe82bbae authored by Michael Holzheu's avatar Michael Holzheu Committed by Martin Schwidefsky
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s390/bpf: Zero extend parameters before calling C function 



The s390x ABI requires to zero extend parameters before functions
are called.

Signed-off-by: default avatarMichael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 1a92b2de

arch/s390/net/bpf_jit.S

+6 −4
Original line number Diff line number Diff line
@@ -46,7 +46,7 @@ sk_load_word_slow: 
	lgr	%r9,%r2			# save %r2

	lgr	%r3,%r1			# offset

	la	%r4,160(%r15)		# pointer to temp buffer

	lhi	%r5,4			# 4 bytes

	lghi	%r5,4			# 4 bytes

	brasl	%r14,skb_copy_bits	# get data from skb

	l	%r5,160(%r15)		# load result from temp buffer

	ltgr	%r2,%r2			# set cc to (%r2 != 0)
@@ -72,7 +72,7 @@ sk_load_half_slow: 
	lgr	%r9,%r2			# save %r2

	lgr	%r3,%r1			# offset

	la	%r4,162(%r15)		# pointer to temp buffer

	lhi	%r5,2			# 2 bytes

	lghi	%r5,2			# 2 bytes

	brasl	%r14,skb_copy_bits	# get data from skb

	xc	160(2,%r15),160(%r15)

	l	%r5,160(%r15)		# load result from temp buffer
@@ -97,8 +97,9 @@ ENTRY(sk_load_byte) 


sk_load_byte_slow:

	lgr	%r9,%r2			# save %r2

	lgr	%r3,%r1			# offset

	la	%r4,163(%r15)		# pointer to temp buffer

	lhi	%r5,1			# 1 bytes

	lghi	%r5,1			# 1 byte

	brasl	%r14,skb_copy_bits	# get data from skb

	xc	160(3,%r15),160(%r15)

	l	%r5,160(%r15)		# load result from temp buffer
@@ -120,8 +121,9 @@ ENTRY(sk_load_byte_msh) 


sk_load_byte_msh_slow:

	lgr	%r9,%r2			# save %r2

	lgr	%r3,%r1			# offset

	la	%r4,163(%r15)		# pointer to temp buffer

	lhi	%r5,1			# 1 bytes

	lghi	%r5,1			# 1 byte

	brasl	%r14,skb_copy_bits	# get data from skb

	xc	160(3,%r15),160(%r15)

	l	%r12,160(%r15)		# load result from temp buffer