aboutsummaryrefslogtreecommitdiff
path: root/arch/sparc64/lib/memscan.S
diff options
context:
space:
mode:
Diffstat (limited to 'arch/sparc64/lib/memscan.S')
-rw-r--r--arch/sparc64/lib/memscan.S129
1 files changed, 0 insertions, 129 deletions
diff --git a/arch/sparc64/lib/memscan.S b/arch/sparc64/lib/memscan.S
deleted file mode 100644
index 5686dfa5dc1..00000000000
--- a/arch/sparc64/lib/memscan.S
+++ /dev/null
@@ -1,129 +0,0 @@
-/*
- * memscan.S: Optimized memscan for Sparc64.
- *
- * Copyright (C) 1997,1998 Jakub Jelinek (jj@ultra.linux.cz)
- * Copyright (C) 1998 David S. Miller (davem@redhat.com)
- */
-
-#define HI_MAGIC 0x8080808080808080
-#define LO_MAGIC 0x0101010101010101
-#define ASI_PL 0x88
-
- .text
- .align 32
- .globl __memscan_zero, __memscan_generic
- .globl memscan
-
-__memscan_zero:
- /* %o0 = bufp, %o1 = size */
- brlez,pn %o1, szzero
- andcc %o0, 7, %g0
- be,pt %icc, we_are_aligned
- sethi %hi(HI_MAGIC), %o4
- ldub [%o0], %o5
-1: subcc %o1, 1, %o1
- brz,pn %o5, 10f
- add %o0, 1, %o0
-
- be,pn %xcc, szzero
- andcc %o0, 7, %g0
- bne,a,pn %icc, 1b
- ldub [%o0], %o5
-we_are_aligned:
- ldxa [%o0] ASI_PL, %o5
- or %o4, %lo(HI_MAGIC), %o3
- sllx %o3, 32, %o4
- or %o4, %o3, %o3
-
- srlx %o3, 7, %o2
-msloop:
- sub %o1, 8, %o1
- add %o0, 8, %o0
- sub %o5, %o2, %o4
- xor %o4, %o5, %o4
- andcc %o4, %o3, %g3
- bne,pn %xcc, check_bytes
- srlx %o4, 32, %g3
-
- brgz,a,pt %o1, msloop
- ldxa [%o0] ASI_PL, %o5
-check_bytes:
- bne,a,pn %icc, 2f
- andcc %o5, 0xff, %g0
- add %o0, -5, %g2
- ba,pt %xcc, 3f
- srlx %o5, 32, %g7
-
-2: srlx %o5, 8, %g7
- be,pn %icc, 1f
- add %o0, -8, %g2
- andcc %g7, 0xff, %g0
- srlx %g7, 8, %g7
- be,pn %icc, 1f
- inc %g2
- andcc %g7, 0xff, %g0
-
- srlx %g7, 8, %g7
- be,pn %icc, 1f
- inc %g2
- andcc %g7, 0xff, %g0
- srlx %g7, 8, %g7
- be,pn %icc, 1f
- inc %g2
- andcc %g3, %o3, %g0
-
- be,a,pn %icc, 2f
- mov %o0, %g2
-3: andcc %g7, 0xff, %g0
- srlx %g7, 8, %g7
- be,pn %icc, 1f
- inc %g2
- andcc %g7, 0xff, %g0
- srlx %g7, 8, %g7
-
- be,pn %icc, 1f
- inc %g2
- andcc %g7, 0xff, %g0
- srlx %g7, 8, %g7
- be,pn %icc, 1f
- inc %g2
- andcc %g7, 0xff, %g0
- srlx %g7, 8, %g7
-
- be,pn %icc, 1f
- inc %g2
-2: brgz,a,pt %o1, msloop
- ldxa [%o0] ASI_PL, %o5
- inc %g2
-1: add %o0, %o1, %o0
- cmp %g2, %o0
- retl
-
- movle %xcc, %g2, %o0
-10: retl
- sub %o0, 1, %o0
-szzero: retl
- nop
-
-memscan:
-__memscan_generic:
- /* %o0 = addr, %o1 = c, %o2 = size */
- brz,pn %o2, 3f
- add %o0, %o2, %o3
- ldub [%o0], %o5
- sub %g0, %o2, %o4
-1:
- cmp %o5, %o1
- be,pn %icc, 2f
- addcc %o4, 1, %o4
- bne,a,pt %xcc, 1b
- ldub [%o3 + %o4], %o5
- retl
- /* The delay slot is the same as the next insn, this is just to make it look more awful */
-2:
- add %o3, %o4, %o0
- retl
- sub %o0, 1, %o0
-3:
- retl
- nop