From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- arch/sparc/lib/strncmp_32.S | 118 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 118 insertions(+) create mode 100644 arch/sparc/lib/strncmp_32.S (limited to 'arch/sparc/lib/strncmp_32.S') diff --git a/arch/sparc/lib/strncmp_32.S b/arch/sparc/lib/strncmp_32.S new file mode 100644 index 000000000..c0d1b568c --- /dev/null +++ b/arch/sparc/lib/strncmp_32.S @@ -0,0 +1,118 @@ +/* + * strncmp.S: Hand optimized Sparc assembly of GCC output from GNU libc + * generic strncmp routine. + */ + +#include + + .text +ENTRY(strncmp) + mov %o0, %g3 + mov 0, %o3 + + cmp %o2, 3 + ble 7f + mov 0, %g2 + + sra %o2, 2, %o4 + ldub [%g3], %o3 + +0: + ldub [%o1], %g2 + add %g3, 1, %g3 + and %o3, 0xff, %o0 + + cmp %o0, 0 + be 8f + add %o1, 1, %o1 + + cmp %o0, %g2 + be,a 1f + ldub [%g3], %o3 + + retl + sub %o0, %g2, %o0 + +1: + ldub [%o1], %g2 + add %g3,1, %g3 + and %o3, 0xff, %o0 + + cmp %o0, 0 + be 8f + add %o1, 1, %o1 + + cmp %o0, %g2 + be,a 1f + ldub [%g3], %o3 + + retl + sub %o0, %g2, %o0 + +1: + ldub [%o1], %g2 + add %g3, 1, %g3 + and %o3, 0xff, %o0 + + cmp %o0, 0 + be 8f + add %o1, 1, %o1 + + cmp %o0, %g2 + be,a 1f + ldub [%g3], %o3 + + retl + sub %o0, %g2, %o0 + +1: + ldub [%o1], %g2 + add %g3, 1, %g3 + and %o3, 0xff, %o0 + + cmp %o0, 0 + be 8f + add %o1, 1, %o1 + + cmp %o0, %g2 + be 1f + add %o4, -1, %o4 + + retl + sub %o0, %g2, %o0 + +1: + + cmp %o4, 0 + bg,a 0b + ldub [%g3], %o3 + + b 7f + and %o2, 3, %o2 + +9: + ldub [%o1], %g2 + add %g3, 1, %g3 + and %o3, 0xff, %o0 + + cmp %o0, 0 + be 8f + add %o1, 1, %o1 + + cmp %o0, %g2 + be 7f + add %o2, -1, %o2 + +8: + retl + sub %o0, %g2, %o0 + +7: + cmp %o2, 0 + bg,a 9b + ldub [%g3], %o3 + + and %g2, 0xff, %o0 + retl + sub %o3, %o0, %o0 +ENDPROC(strncmp) -- cgit v1.2.3-54-g00ecf