diff options
| author | Sam Ravnborg <sam@ravnborg.org> | 2008-12-03 03:07:00 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-12-04 09:17:18 -0800 |
| commit | 18269c0fd4db9bec2668f895f21d742486ccb90f (patch) | |
| tree | 2aecdac629ea35c77ec246e838dd9cfdeea02121 /arch/sparc/lib/memscan.S | |
| parent | 5de18cde3b748aafc6d187d7655ba42f2260501d (diff) | |
sparc: prepare lib/ for unification
Identical named files renamed to <name>_32.S
Refactored Makefile to prepare for unification.
Linking order was altered slightly - but this is a lib.a file so
it should not matter.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/lib/memscan.S')
| -rw-r--r-- | arch/sparc/lib/memscan.S | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/arch/sparc/lib/memscan.S b/arch/sparc/lib/memscan.S deleted file mode 100644 index 4ff1657dfc24..000000000000 --- a/arch/sparc/lib/memscan.S +++ /dev/null @@ -1,133 +0,0 @@ -/* - * memscan.S: Optimized memscan for the Sparc. - * - * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu) - */ - -/* In essence, this is just a fancy strlen. */ - -#define LO_MAGIC 0x01010101 -#define HI_MAGIC 0x80808080 - - .text - .align 4 - .globl __memscan_zero, __memscan_generic - .globl memscan -__memscan_zero: - /* %o0 = addr, %o1 = size */ - cmp %o1, 0 - bne,a 1f - andcc %o0, 3, %g0 - - retl - nop - -1: - be mzero_scan_word - sethi %hi(HI_MAGIC), %g2 - - ldsb [%o0], %g3 -mzero_still_not_word_aligned: - cmp %g3, 0 - bne 1f - add %o0, 1, %o0 - - retl - sub %o0, 1, %o0 - -1: - subcc %o1, 1, %o1 - bne,a 1f - andcc %o0, 3, %g0 - - retl - nop - -1: - bne,a mzero_still_not_word_aligned - ldsb [%o0], %g3 - - sethi %hi(HI_MAGIC), %g2 -mzero_scan_word: - or %g2, %lo(HI_MAGIC), %o3 - sethi %hi(LO_MAGIC), %g3 - or %g3, %lo(LO_MAGIC), %o2 -mzero_next_word: - ld [%o0], %g2 -mzero_next_word_preloaded: - sub %g2, %o2, %g2 -mzero_next_word_preloaded_next: - andcc %g2, %o3, %g0 - bne mzero_byte_zero - add %o0, 4, %o0 - -mzero_check_out_of_fuel: - subcc %o1, 4, %o1 - bg,a 1f - ld [%o0], %g2 - - retl - nop - -1: - b mzero_next_word_preloaded_next - sub %g2, %o2, %g2 - - /* Check every byte. */ -mzero_byte_zero: - ldsb [%o0 - 4], %g2 - cmp %g2, 0 - bne mzero_byte_one - sub %o0, 4, %g3 - - retl - mov %g3, %o0 - -mzero_byte_one: - ldsb [%o0 - 3], %g2 - cmp %g2, 0 - bne,a mzero_byte_two_and_three - ldsb [%o0 - 2], %g2 - - retl - sub %o0, 3, %o0 - -mzero_byte_two_and_three: - cmp %g2, 0 - bne,a 1f - ldsb [%o0 - 1], %g2 - - retl - sub %o0, 2, %o0 - -1: - cmp %g2, 0 - bne,a mzero_next_word_preloaded - ld [%o0], %g2 - - retl - sub %o0, 1, %o0 - -mzero_found_it: - retl - sub %o0, 2, %o0 - -memscan: -__memscan_generic: - /* %o0 = addr, %o1 = c, %o2 = size */ - cmp %o2, 0 - bne,a 0f - ldub [%o0], %g2 - - b,a 2f -1: - ldub [%o0], %g2 -0: - cmp %g2, %o1 - be 2f - addcc %o2, -1, %o2 - bne 1b - add %o0, 1, %o0 -2: - retl - nop |