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OpenCloudOS-Kernel/arch/sparc/crypto/sha256_asm.S

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sparc64: Add SHA224/SHA256 driver making use of the 'sha256' instruction. Signed-off-by: David S. Miller <davem@davemloft.net> Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
2012-08-20 08:11:37 +08:00
#include <linux/linkage.h>
#include <asm/visasm.h>
sparc64: Avoid code duplication in crypto assembler. Put the opcode macros in a common header Signed-off-by: David S. Miller <davem@davemloft.net>
2012-09-01 03:11:51 +08:00
#include "opcodes.h"
sparc64: Add SHA224/SHA256 driver making use of the 'sha256' instruction. Signed-off-by: David S. Miller <davem@davemloft.net> Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
2012-08-20 08:11:37 +08:00
ENTRY(sha256_sparc64_transform)
/* %o0 = digest, %o1 = data, %o2 = rounds */
VISEntryHalf
ld [%o0 + 0x00], %f0
ld [%o0 + 0x04], %f1
ld [%o0 + 0x08], %f2
ld [%o0 + 0x0c], %f3
ld [%o0 + 0x10], %f4
ld [%o0 + 0x14], %f5
andcc %o1, 0x7, %g0
ld [%o0 + 0x18], %f6
bne,pn %xcc, 10f
ld [%o0 + 0x1c], %f7
1:
ldd [%o1 + 0x00], %f8
ldd [%o1 + 0x08], %f10
ldd [%o1 + 0x10], %f12
ldd [%o1 + 0x18], %f14
ldd [%o1 + 0x20], %f16
ldd [%o1 + 0x28], %f18
ldd [%o1 + 0x30], %f20
ldd [%o1 + 0x38], %f22
sparc64: Avoid code duplication in crypto assembler. Put the opcode macros in a common header Signed-off-by: David S. Miller <davem@davemloft.net>
2012-09-01 03:11:51 +08:00
SHA256
sparc64: Add SHA224/SHA256 driver making use of the 'sha256' instruction. Signed-off-by: David S. Miller <davem@davemloft.net> Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
2012-08-20 08:11:37 +08:00
subcc %o2, 1, %o2
bne,pt %xcc, 1b
add %o1, 0x40, %o1
5:
st %f0, [%o0 + 0x00]
st %f1, [%o0 + 0x04]
st %f2, [%o0 + 0x08]
st %f3, [%o0 + 0x0c]
st %f4, [%o0 + 0x10]
st %f5, [%o0 + 0x14]
st %f6, [%o0 + 0x18]
st %f7, [%o0 + 0x1c]
retl
VISExitHalf
10:
alignaddr %o1, %g0, %o1
ldd [%o1 + 0x00], %f10
1:
ldd [%o1 + 0x08], %f12
ldd [%o1 + 0x10], %f14
ldd [%o1 + 0x18], %f16
ldd [%o1 + 0x20], %f18
ldd [%o1 + 0x28], %f20
ldd [%o1 + 0x30], %f22
ldd [%o1 + 0x38], %f24
ldd [%o1 + 0x40], %f26
faligndata %f10, %f12, %f8
faligndata %f12, %f14, %f10
faligndata %f14, %f16, %f12
faligndata %f16, %f18, %f14
faligndata %f18, %f20, %f16
faligndata %f20, %f22, %f18
faligndata %f22, %f24, %f20
faligndata %f24, %f26, %f22
sparc64: Avoid code duplication in crypto assembler. Put the opcode macros in a common header Signed-off-by: David S. Miller <davem@davemloft.net>
2012-09-01 03:11:51 +08:00
SHA256
sparc64: Add SHA224/SHA256 driver making use of the 'sha256' instruction. Signed-off-by: David S. Miller <davem@davemloft.net> Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
2012-08-20 08:11:37 +08:00
subcc %o2, 1, %o2
sparc64: Use fsrc2 instead of fsrc1 in sparc64 hash crypto drivers. On SPARC-T4 fsrc2 has 1 cycle of latency, whereas fsrc1 has 11 cycles. True story. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-08-29 11:55:19 +08:00
fsrc2 %f26, %f10
sparc64: Add SHA224/SHA256 driver making use of the 'sha256' instruction. Signed-off-by: David S. Miller <davem@davemloft.net> Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
2012-08-20 08:11:37 +08:00
bne,pt %xcc, 1b
add %o1, 0x40, %o1
ba,a,pt %xcc, 5b
ENDPROC(sha256_sparc64_transform)