aboutsummaryrefslogtreecommitdiff
path: root/arch/sparc64/lib/csum_copy.S
diff options
context:
space:
mode:
Diffstat (limited to 'arch/sparc64/lib/csum_copy.S')
-rw-r--r--arch/sparc64/lib/csum_copy.S309
1 files changed, 0 insertions, 309 deletions
diff --git a/arch/sparc64/lib/csum_copy.S b/arch/sparc64/lib/csum_copy.S
deleted file mode 100644
index e566c770a0f..00000000000
--- a/arch/sparc64/lib/csum_copy.S
+++ /dev/null
@@ -1,309 +0,0 @@
-/* csum_copy.S: Checksum+copy code for sparc64
- *
- * Copyright (C) 2005 David S. Miller <davem@davemloft.net>
- */
-
-#ifdef __KERNEL__
-#define GLOBAL_SPARE %g7
-#else
-#define GLOBAL_SPARE %g5
-#endif
-
-#ifndef EX_LD
-#define EX_LD(x) x
-#endif
-
-#ifndef EX_ST
-#define EX_ST(x) x
-#endif
-
-#ifndef EX_RETVAL
-#define EX_RETVAL(x) x
-#endif
-
-#ifndef LOAD
-#define LOAD(type,addr,dest) type [addr], dest
-#endif
-
-#ifndef STORE
-#define STORE(type,src,addr) type src, [addr]
-#endif
-
-#ifndef FUNC_NAME
-#define FUNC_NAME csum_partial_copy_nocheck
-#endif
-
- .register %g2, #scratch
- .register %g3, #scratch
-
- .text
-
-90:
- /* We checked for zero length already, so there must be
- * at least one byte.
- */
- be,pt %icc, 1f
- nop
- EX_LD(LOAD(ldub, %o0 + 0x00, %o4))
- add %o0, 1, %o0
- sub %o2, 1, %o2
- EX_ST(STORE(stb, %o4, %o1 + 0x00))
- add %o1, 1, %o1
-1: andcc %o0, 0x2, %g0
- be,pn %icc, 80f
- cmp %o2, 2
- blu,pn %icc, 60f
- nop
- EX_LD(LOAD(lduh, %o0 + 0x00, %o5))
- add %o0, 2, %o0
- sub %o2, 2, %o2
- EX_ST(STORE(sth, %o5, %o1 + 0x00))
- add %o1, 2, %o1
- ba,pt %xcc, 80f
- add %o5, %o4, %o4
-
- .globl FUNC_NAME
-FUNC_NAME: /* %o0=src, %o1=dst, %o2=len, %o3=sum */
- LOAD(prefetch, %o0 + 0x000, #n_reads)
- xor %o0, %o1, %g1
- clr %o4
- andcc %g1, 0x3, %g0
- bne,pn %icc, 95f
- LOAD(prefetch, %o0 + 0x040, #n_reads)
-
- brz,pn %o2, 70f
- andcc %o0, 0x3, %g0
-
- /* We "remember" whether the lowest bit in the address
- * was set in GLOBAL_SPARE. Because if it is, we have to swap
- * upper and lower 8 bit fields of the sum we calculate.
- */
- bne,pn %icc, 90b
- andcc %o0, 0x1, GLOBAL_SPARE
-
-80:
- LOAD(prefetch, %o0 + 0x080, #n_reads)
- andncc %o2, 0x3f, %g3
-
- LOAD(prefetch, %o0 + 0x0c0, #n_reads)
- sub %o2, %g3, %o2
- brz,pn %g3, 2f
- LOAD(prefetch, %o0 + 0x100, #n_reads)
-
- /* So that we don't need to use the non-pairing
- * add-with-carry instructions we accumulate 32-bit
- * values into a 64-bit register. At the end of the
- * loop we fold it down to 32-bits and so on.
- */
- ba,pt %xcc, 1f
- LOAD(prefetch, %o0 + 0x140, #n_reads)
-
- .align 32
-1: EX_LD(LOAD(lduw, %o0 + 0x00, %o5))
- EX_LD(LOAD(lduw, %o0 + 0x04, %g1))
- EX_LD(LOAD(lduw, %o0 + 0x08, %g2))
- add %o4, %o5, %o4
- EX_ST(STORE(stw, %o5, %o1 + 0x00))
- EX_LD(LOAD(lduw, %o0 + 0x0c, %o5))
- add %o4, %g1, %o4
- EX_ST(STORE(stw, %g1, %o1 + 0x04))
- EX_LD(LOAD(lduw, %o0 + 0x10, %g1))
- add %o4, %g2, %o4
- EX_ST(STORE(stw, %g2, %o1 + 0x08))
- EX_LD(LOAD(lduw, %o0 + 0x14, %g2))
- add %o4, %o5, %o4
- EX_ST(STORE(stw, %o5, %o1 + 0x0c))
- EX_LD(LOAD(lduw, %o0 + 0x18, %o5))
- add %o4, %g1, %o4
- EX_ST(STORE(stw, %g1, %o1 + 0x10))
- EX_LD(LOAD(lduw, %o0 + 0x1c, %g1))
- add %o4, %g2, %o4
- EX_ST(STORE(stw, %g2, %o1 + 0x14))
- EX_LD(LOAD(lduw, %o0 + 0x20, %g2))
- add %o4, %o5, %o4
- EX_ST(STORE(stw, %o5, %o1 + 0x18))
- EX_LD(LOAD(lduw, %o0 + 0x24, %o5))
- add %o4, %g1, %o4
- EX_ST(STORE(stw, %g1, %o1 + 0x1c))
- EX_LD(LOAD(lduw, %o0 + 0x28, %g1))
- add %o4, %g2, %o4
- EX_ST(STORE(stw, %g2, %o1 + 0x20))
- EX_LD(LOAD(lduw, %o0 + 0x2c, %g2))
- add %o4, %o5, %o4
- EX_ST(STORE(stw, %o5, %o1 + 0x24))
- EX_LD(LOAD(lduw, %o0 + 0x30, %o5))
- add %o4, %g1, %o4
- EX_ST(STORE(stw, %g1, %o1 + 0x28))
- EX_LD(LOAD(lduw, %o0 + 0x34, %g1))
- add %o4, %g2, %o4
- EX_ST(STORE(stw, %g2, %o1 + 0x2c))
- EX_LD(LOAD(lduw, %o0 + 0x38, %g2))
- add %o4, %o5, %o4
- EX_ST(STORE(stw, %o5, %o1 + 0x30))
- EX_LD(LOAD(lduw, %o0 + 0x3c, %o5))
- add %o4, %g1, %o4
- EX_ST(STORE(stw, %g1, %o1 + 0x34))
- LOAD(prefetch, %o0 + 0x180, #n_reads)
- add %o4, %g2, %o4
- EX_ST(STORE(stw, %g2, %o1 + 0x38))
- subcc %g3, 0x40, %g3
- add %o0, 0x40, %o0
- add %o4, %o5, %o4
- EX_ST(STORE(stw, %o5, %o1 + 0x3c))
- bne,pt %icc, 1b
- add %o1, 0x40, %o1
-
-2: and %o2, 0x3c, %g3
- brz,pn %g3, 2f
- sub %o2, %g3, %o2
-1: EX_LD(LOAD(lduw, %o0 + 0x00, %o5))
- subcc %g3, 0x4, %g3
- add %o0, 0x4, %o0
- add %o4, %o5, %o4
- EX_ST(STORE(stw, %o5, %o1 + 0x00))
- bne,pt %icc, 1b
- add %o1, 0x4, %o1
-
-2:
- /* fold 64-->32 */
- srlx %o4, 32, %o5
- srl %o4, 0, %o4
- add %o4, %o5, %o4
- srlx %o4, 32, %o5
- srl %o4, 0, %o4
- add %o4, %o5, %o4
-
- /* fold 32-->16 */
- sethi %hi(0xffff0000), %g1
- srl %o4, 16, %o5
- andn %o4, %g1, %g2
- add %o5, %g2, %o4
- srl %o4, 16, %o5
- andn %o4, %g1, %g2
- add %o5, %g2, %o4
-
-60:
- /* %o4 has the 16-bit sum we have calculated so-far. */
- cmp %o2, 2
- blu,pt %icc, 1f
- nop
- EX_LD(LOAD(lduh, %o0 + 0x00, %o5))
- sub %o2, 2, %o2
- add %o0, 2, %o0
- add %o4, %o5, %o4
- EX_ST(STORE(sth, %o5, %o1 + 0x00))
- add %o1, 0x2, %o1
-1: brz,pt %o2, 1f
- nop
- EX_LD(LOAD(ldub, %o0 + 0x00, %o5))
- sub %o2, 1, %o2
- add %o0, 1, %o0
- EX_ST(STORE(stb, %o5, %o1 + 0x00))
- sllx %o5, 8, %o5
- add %o1, 1, %o1
- add %o4, %o5, %o4
-1:
- /* fold 32-->16 */
- sethi %hi(0xffff0000), %g1
- srl %o4, 16, %o5
- andn %o4, %g1, %g2
- add %o5, %g2, %o4
- srl %o4, 16, %o5
- andn %o4, %g1, %g2
- add %o5, %g2, %o4
-
-1: brz,pt GLOBAL_SPARE, 1f
- nop
-
- /* We started with an odd byte, byte-swap the result. */
- srl %o4, 8, %o5
- and %o4, 0xff, %g1
- sll %g1, 8, %g1
- or %o5, %g1, %o4
-
-1: addcc %o3, %o4, %o3
- addc %g0, %o3, %o3
-
-70:
- retl
- srl %o3, 0, %o0
-
-95: mov 0, GLOBAL_SPARE
- brlez,pn %o2, 4f
- andcc %o0, 1, %o5
- be,a,pt %icc, 1f
- srl %o2, 1, %g1
- sub %o2, 1, %o2
- EX_LD(LOAD(ldub, %o0, GLOBAL_SPARE))
- add %o0, 1, %o0
- EX_ST(STORE(stb, GLOBAL_SPARE, %o1))
- srl %o2, 1, %g1
- add %o1, 1, %o1
-1: brz,a,pn %g1, 3f
- andcc %o2, 1, %g0
- andcc %o0, 2, %g0
- be,a,pt %icc, 1f
- srl %g1, 1, %g1
- EX_LD(LOAD(lduh, %o0, %o4))
- sub %o2, 2, %o2
- srl %o4, 8, %g2
- sub %g1, 1, %g1
- EX_ST(STORE(stb, %g2, %o1))
- add %o4, GLOBAL_SPARE, GLOBAL_SPARE
- EX_ST(STORE(stb, %o4, %o1 + 1))
- add %o0, 2, %o0
- srl %g1, 1, %g1
- add %o1, 2, %o1
-1: brz,a,pn %g1, 2f
- andcc %o2, 2, %g0
- EX_LD(LOAD(lduw, %o0, %o4))
-5: srl %o4, 24, %g2
- srl %o4, 16, %g3
- EX_ST(STORE(stb, %g2, %o1))
- srl %o4, 8, %g2
- EX_ST(STORE(stb, %g3, %o1 + 1))
- add %o0, 4, %o0
- EX_ST(STORE(stb, %g2, %o1 + 2))
- addcc %o4, GLOBAL_SPARE, GLOBAL_SPARE
- EX_ST(STORE(stb, %o4, %o1 + 3))
- addc GLOBAL_SPARE, %g0, GLOBAL_SPARE
- add %o1, 4, %o1
- subcc %g1, 1, %g1
- bne,a,pt %icc, 5b
- EX_LD(LOAD(lduw, %o0, %o4))
- sll GLOBAL_SPARE, 16, %g2
- srl GLOBAL_SPARE, 16, GLOBAL_SPARE
- srl %g2, 16, %g2
- andcc %o2, 2, %g0
- add %g2, GLOBAL_SPARE, GLOBAL_SPARE
-2: be,a,pt %icc, 3f
- andcc %o2, 1, %g0
- EX_LD(LOAD(lduh, %o0, %o4))
- andcc %o2, 1, %g0
- srl %o4, 8, %g2
- add %o0, 2, %o0
- EX_ST(STORE(stb, %g2, %o1))
- add GLOBAL_SPARE, %o4, GLOBAL_SPARE
- EX_ST(STORE(stb, %o4, %o1 + 1))
- add %o1, 2, %o1
-3: be,a,pt %icc, 1f
- sll GLOBAL_SPARE, 16, %o4
- EX_LD(LOAD(ldub, %o0, %g2))
- sll %g2, 8, %o4
- EX_ST(STORE(stb, %g2, %o1))
- add GLOBAL_SPARE, %o4, GLOBAL_SPARE
- sll GLOBAL_SPARE, 16, %o4
-1: addcc %o4, GLOBAL_SPARE, GLOBAL_SPARE
- srl GLOBAL_SPARE, 16, %o4
- addc %g0, %o4, GLOBAL_SPARE
- brz,pt %o5, 4f
- srl GLOBAL_SPARE, 8, %o4
- and GLOBAL_SPARE, 0xff, %g2
- and %o4, 0xff, %o4
- sll %g2, 8, %g2
- or %g2, %o4, GLOBAL_SPARE
-4: addcc %o3, GLOBAL_SPARE, %o3
- addc %g0, %o3, %o0
- retl
- srl %o0, 0, %o0
- .size FUNC_NAME, .-FUNC_NAME