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.text
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.text
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/** Copy memory from/to userspace.
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/** Copy memory from/to userspace.
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 *
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 *
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 * This memcpy() has been taken from the assembler output of
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 * the generic _memcpy() and modified to have the failover part.
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 *
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 * @param in0 Destination address.
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 * @param in0 Destination address.
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 * @param in1 Source address.
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 * @param in1 Source address.
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 * @param in2 Number of byte to copy.
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 * @param in2 Number of byte to copy.
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 */
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 */
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.global memcpy
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.global memcpy
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.global memcpy_from_uspace_failover_address
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.global memcpy_from_uspace_failover_address
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.global memcpy_to_uspace_failover_address
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.global memcpy_to_uspace_failover_address
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memcpy:
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memcpy:
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memcpy_from_uspace:
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memcpy_from_uspace:
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memcpy_to_uspace:
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memcpy_to_uspace:
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	alloc loc0 = ar.pfs, 3, 1, 0, 0
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	shr.u r18 = in2, 3
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	mov r8 = in1 ;;			/* prepare to return in1 on success */
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	cmp.ne p6, p7 = 0, r18	;;
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(p7)	mov r17 = r0
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(p7)	br.cond.dptk 1f ;;
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	br _memcpy
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	mov r16 = r0
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	mov r17 = r0 ;;
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0:
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	shladd r14 = r17, 3, r0
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	adds r16 = 1, r16 ;;
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	add r15 = r14, r8
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	sxt4 r17 = r16
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	add r14 = r14, in0 ;;
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	ld8 r15 = [r15]
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	cmp.gtu p6, p7 = r18, r17 ;;
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	st8 [r14] = r15
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(p6)	br.cond.dptk 0b
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1:
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	and in2 = 7, in2 ;;
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	cmp.eq p6, p7 = 0, in2 ;;
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(p6)	mov ar.pfs = loc0
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(p6)	br.ret.dptk.many rp
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	shladd r14 = r17, 3, r0
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	mov r16 = r0
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	mov r17 = r0 ;;
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	add in0 = in0, r14
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	add r18 = r8, r14 ;;
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2:
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	add r14 = r16, r18
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	adds r17 = 1, r17
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	add r15 = in0, r16 ;;
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	ld1 r14 = [r14]
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	sxt4 r16 = r17	;;
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	st1 [r15] = r14
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	cmp.gtu p6, p7 = in2, r16
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(p6)	br.cond.dptk 2b
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	mov ar.pfs = loc0
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	br.ret.sptk.many rp
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memcpy_from_uspace_failover_address:
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memcpy_from_uspace_failover_address:
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memcpy_to_uspace_failover_address:
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memcpy_to_uspace_failover_address:
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	br memcpy_from_uspace_failover_address
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	mov r8 = r0			/* return 0 on failure */
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	mov ar.pfs = loc0
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	br.ret.sptk.many rp
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.global memsetb
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.global memsetb
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memsetb:
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memsetb:
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	br _memsetb
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	br _memsetb
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