linux_old1/arch/sparc/lib/ipcsum.S

#include <linux/linkage.h>

	.text
ENTRY(ip_fast_csum) /* %o0 = iph, %o1 = ihl */
	sub	%o1, 4, %g7
	lduw	[%o0 + 0x00], %o2
	lduw	[%o0 + 0x04], %g2
	lduw	[%o0 + 0x08], %g3
	addcc	%g2, %o2, %o2
	lduw	[%o0 + 0x0c], %g2
	addccc	%g3, %o2, %o2
	lduw	[%o0 + 0x10], %g3

	addccc	%g2, %o2, %o2
	addc	%o2, %g0, %o2
1:	addcc	%g3, %o2, %o2
	add	%o0, 4, %o0
	addccc	%o2, %g0, %o2
	subcc	%g7, 1, %g7
	be,a,pt	%icc, 2f
	 sll	%o2, 16, %g2

	lduw	[%o0 + 0x10], %g3
	ba,pt	%xcc, 1b
	 nop
2:	addcc	%o2, %g2, %g2
	srl	%g2, 16, %o2
	addc	%o2, %g0, %o2
	xnor	%g0, %o2, %o2
	set	0xffff, %o1
	retl
	 and	%o2, %o1, %o0
ENDPROC(ip_fast_csum)
sparc: Convert some assembler over to linakge.h's ENTRY/ENDPROC Use those, instead of doing it all by hand. Signed-off-by: David S. Miller <davem@davemloft.net> 2012-05-12 11:33:22 +08:00			`#include <linux/linkage.h>`

Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! 2005-04-17 06:20:36 +08:00			`.text`
sparc: Convert some assembler over to linakge.h's ENTRY/ENDPROC Use those, instead of doing it all by hand. Signed-off-by: David S. Miller <davem@davemloft.net> 2012-05-12 11:33:22 +08:00			`ENTRY(ip_fast_csum) /* %o0 = iph, %o1 = ihl */`
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! 2005-04-17 06:20:36 +08:00			`sub %o1, 4, %g7`
			`lduw [%o0 + 0x00], %o2`
			`lduw [%o0 + 0x04], %g2`
			`lduw [%o0 + 0x08], %g3`
			`addcc %g2, %o2, %o2`
			`lduw [%o0 + 0x0c], %g2`
			`addccc %g3, %o2, %o2`
			`lduw [%o0 + 0x10], %g3`

			`addccc %g2, %o2, %o2`
			`addc %o2, %g0, %o2`
			`1: addcc %g3, %o2, %o2`
			`add %o0, 4, %o0`
			`addccc %o2, %g0, %o2`
			`subcc %g7, 1, %g7`
			`be,a,pt %icc, 2f`
			`sll %o2, 16, %g2`

			`lduw [%o0 + 0x10], %g3`
			`ba,pt %xcc, 1b`
			`nop`
			`2: addcc %o2, %g2, %g2`
			`srl %g2, 16, %o2`
			`addc %o2, %g0, %o2`
			`xnor %g0, %o2, %o2`
			`set 0xffff, %o1`
			`retl`
			`and %o2, %o1, %o0`
sparc: Convert some assembler over to linakge.h's ENTRY/ENDPROC Use those, instead of doing it all by hand. Signed-off-by: David S. Miller <davem@davemloft.net> 2012-05-12 11:33:22 +08:00			`ENDPROC(ip_fast_csum)`