diff options
Diffstat (limited to 'sysdeps/sparc/sparc64/multiarch/sub_n-vis3.S')
| -rw-r--r-- | sysdeps/sparc/sparc64/multiarch/sub_n-vis3.S | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/sysdeps/sparc/sparc64/multiarch/sub_n-vis3.S b/sysdeps/sparc/sparc64/multiarch/sub_n-vis3.S new file mode 100644 index 0000000000..4e9a786d32 --- /dev/null +++ b/sysdeps/sparc/sparc64/multiarch/sub_n-vis3.S @@ -0,0 +1,71 @@ +! SPARC v9 64-bit VIS3 __mpn_sub_n -- Subtract two limb vectors of the same length > 0 +! and store difference in a third limb vector. +! +! Copyright (C) 2013 Free Software Foundation, Inc. +! This file is part of the GNU C Library. +! Contributed by David S. Miller <davem@davemloft.net> +! +! The GNU C Library is free software; you can redistribute it and/or +! modify it under the terms of the GNU Lesser General Public +! License as published by the Free Software Foundation; either +! version 2.1 of the License, or (at your option) any later version. +! +! The GNU C Library is distributed in the hope that it will be useful, +! but WITHOUT ANY WARRANTY; without even the implied warranty of +! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +! Lesser General Public License for more details. +! +! You should have received a copy of the GNU Lesser General Public +! License along with the GNU C Library; if not, see +! <http://www.gnu.org/licenses/>. + +#include <sysdep.h> + +#define res_ptr %o0 +#define s1_ptr %o1 +#define s2_ptr %o2 +#define sz %o3 +#define tmp1 %g1 +#define tmp2 %g2 +#define tmp3 %g3 +#define tmp4 %o4 + + .register %g2,#scratch + .register %g3,#scratch +ENTRY(__mpn_sub_n_vis3) + subcc sz, 1, sz + be .Lfinal_limb + cmp %g0, 1 + +.Lloop: + ldx [s2_ptr + 0x00], tmp1 + add s2_ptr, 0x10, s2_ptr + ldx [s1_ptr + 0x00], tmp2 + add s1_ptr, 0x10, s1_ptr + ldx [s2_ptr - 0x08], tmp3 + add res_ptr, 0x10, res_ptr + ldx [s1_ptr - 0x08], tmp4 + sub sz, 2, sz + xnor tmp1, %g0, tmp1 + addxccc tmp1, tmp2, tmp1 + stx tmp1, [res_ptr - 0x10] + xnor tmp3, %g0, tmp3 + addxccc tmp3, tmp4, tmp3 + brgz sz, .Lloop + stx tmp3, [res_ptr - 0x08] + + brlz,pt sz, .Lfinish + nop + +.Lfinal_limb: + ldx [s2_ptr + 0x00], tmp1 + ldx [s1_ptr + 0x00], tmp2 + xnor tmp1, %g0, tmp1 + addxccc tmp1, tmp2, tmp1 + stx tmp1, [res_ptr + 0x00] + +.Lfinish: + clr %o0 + retl + movcc %xcc, 1, %o0 +END(__mpn_sub_n_vis3) |