diff options
Diffstat (limited to 'arch/sparc/lib/strlen_user_32.S')
-rw-r--r-- | arch/sparc/lib/strlen_user_32.S | 109 |
1 files changed, 0 insertions, 109 deletions
diff --git a/arch/sparc/lib/strlen_user_32.S b/arch/sparc/lib/strlen_user_32.S deleted file mode 100644 index 8c8a371df3c..00000000000 --- a/arch/sparc/lib/strlen_user_32.S +++ /dev/null @@ -1,109 +0,0 @@ -/* strlen_user.S: Sparc optimized strlen_user code - * - * Return length of string in userspace including terminating 0 - * or 0 for error - * - * Copyright (C) 1991,1996 Free Software Foundation - * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu) - * Copyright (C) 1996 Jakub Jelinek (jj@sunsite.mff.cuni.cz) - */ - -#define LO_MAGIC 0x01010101 -#define HI_MAGIC 0x80808080 - -10: - ldub [%o0], %o5 - cmp %o5, 0 - be 1f - add %o0, 1, %o0 - andcc %o0, 3, %g0 - be 4f - or %o4, %lo(HI_MAGIC), %o3 -11: - ldub [%o0], %o5 - cmp %o5, 0 - be 2f - add %o0, 1, %o0 - andcc %o0, 3, %g0 - be 5f - sethi %hi(LO_MAGIC), %o4 -12: - ldub [%o0], %o5 - cmp %o5, 0 - be 3f - add %o0, 1, %o0 - b 13f - or %o4, %lo(LO_MAGIC), %o2 -1: - retl - mov 1, %o0 -2: - retl - mov 2, %o0 -3: - retl - mov 3, %o0 - - .align 4 - .global __strlen_user, __strnlen_user -__strlen_user: - sethi %hi(32768), %o1 -__strnlen_user: - mov %o1, %g1 - mov %o0, %o1 - andcc %o0, 3, %g0 - bne 10b - sethi %hi(HI_MAGIC), %o4 - or %o4, %lo(HI_MAGIC), %o3 -4: - sethi %hi(LO_MAGIC), %o4 -5: - or %o4, %lo(LO_MAGIC), %o2 -13: - ld [%o0], %o5 -2: - sub %o5, %o2, %o4 - andcc %o4, %o3, %g0 - bne 82f - add %o0, 4, %o0 - sub %o0, %o1, %g2 -81: cmp %g2, %g1 - blu 13b - mov %o0, %o4 - ba,a 1f - - /* Check every byte. */ -82: srl %o5, 24, %g5 - andcc %g5, 0xff, %g0 - be 1f - add %o0, -3, %o4 - srl %o5, 16, %g5 - andcc %g5, 0xff, %g0 - be 1f - add %o4, 1, %o4 - srl %o5, 8, %g5 - andcc %g5, 0xff, %g0 - be 1f - add %o4, 1, %o4 - andcc %o5, 0xff, %g0 - bne 81b - sub %o0, %o1, %g2 - - add %o4, 1, %o4 -1: - retl - sub %o4, %o1, %o0 - - .section .fixup,#alloc,#execinstr - .align 4 -9: - retl - clr %o0 - - .section __ex_table,#alloc - .align 4 - - .word 10b, 9b - .word 11b, 9b - .word 12b, 9b - .word 13b, 9b |