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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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478b8fecda
o Renamed files in sparc64 to <name>_64.S when identical to sparc32 files. o iomap.c were equal for sparc32 and sparc64 o adjusted sparc/Makefile now we have only one lib/ Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
35 lines
658 B
ArmAsm
35 lines
658 B
ArmAsm
.text
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.align 32
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.globl ip_fast_csum
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.type ip_fast_csum,#function
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ip_fast_csum: /* %o0 = iph, %o1 = ihl */
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sub %o1, 4, %g7
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lduw [%o0 + 0x00], %o2
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lduw [%o0 + 0x04], %g2
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lduw [%o0 + 0x08], %g3
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addcc %g2, %o2, %o2
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lduw [%o0 + 0x0c], %g2
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addccc %g3, %o2, %o2
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lduw [%o0 + 0x10], %g3
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addccc %g2, %o2, %o2
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addc %o2, %g0, %o2
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1: addcc %g3, %o2, %o2
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add %o0, 4, %o0
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addccc %o2, %g0, %o2
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subcc %g7, 1, %g7
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be,a,pt %icc, 2f
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sll %o2, 16, %g2
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lduw [%o0 + 0x10], %g3
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ba,pt %xcc, 1b
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nop
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2: addcc %o2, %g2, %g2
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srl %g2, 16, %o2
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addc %o2, %g0, %o2
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xnor %g0, %o2, %o2
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set 0xffff, %o1
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retl
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and %o2, %o1, %o0
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.size ip_fast_csum, .-ip_fast_csum
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