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| author | Srikant Patnaik | 2015-01-13 15:08:24 +0530 |
|---|---|---|
| committer | Srikant Patnaik | 2015-01-13 15:08:24 +0530 |
| commit | 97327692361306d1e6259021bc425e32832fdb50 (patch) | |
| tree | fe9088f3248ec61e24f404f21b9793cb644b7f01 /arch/sparc/lib/strncmp_32.S | |
| parent | 2d05a8f663478a44e088d122e0d62109bbc801d0 (diff) | |
| parent | a3a8b90b61e21be3dde9101c4e86c881e0f06210 (diff) | |
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dirty fix to merging
Diffstat (limited to 'arch/sparc/lib/strncmp_32.S')
| -rw-r--r-- | arch/sparc/lib/strncmp_32.S | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/arch/sparc/lib/strncmp_32.S b/arch/sparc/lib/strncmp_32.S new file mode 100644 index 00000000..494ec664 --- /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. + */ + + .text + .align 4 + .global __strncmp, strncmp +__strncmp: +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 |