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author | Sebastian Perta <sebastian.perta@renesas.com> | 2017-10-23 13:30:22 -0400 |
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committer | DJ Delorie <dj@gcc.gnu.org> | 2017-10-23 13:30:22 -0400 |
commit | 8cb41ec6634db079da2ec4ea2ca1f588093a8fbb (patch) | |
tree | 4c89994270b0dfe1e9627fc8e772724dd041ffe2 /libgcc/config | |
parent | d1047465199d48014b8e81cd4a7ba9d0365e6fe3 (diff) | |
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Forgot to add the new file :-P 2017-10-13 Sebastian Perta <sebastian.perta@renesas.com>
Forgot to add the new file :-P
2017-10-13 Sebastian Perta <sebastian.perta@renesas.com>
* config/rl78/adddi3.S: New assembly file.
* config/rl78/t-rl78: Added adddi3.S to LIB2ADD.
From-SVN: r254016
Diffstat (limited to 'libgcc/config')
-rw-r--r-- | libgcc/config/rl78/adddi3.S | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/libgcc/config/rl78/adddi3.S b/libgcc/config/rl78/adddi3.S new file mode 100644 index 0000000..c805055 --- /dev/null +++ b/libgcc/config/rl78/adddi3.S @@ -0,0 +1,58 @@ +; Copyright (C) 2017 Free Software Foundation, Inc. +; Contributed by Sebastian Perta. +; +; This file is free software; you can redistribute it and/or modify it +; under the terms of the GNU General Public License as published by the +; Free Software Foundation; either version 3, or (at your option) any +; later version. +; +; This file 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 +; General Public License for more details. +; +; Under Section 7 of GPL version 3, you are granted additional +; permissions described in the GCC Runtime Library Exception, version +; 3.1, as published by the Free Software Foundation. +; +; You should have received a copy of the GNU General Public License and +; a copy of the GCC Runtime Library Exception along with this program; +; see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +; <http://www.gnu.org/licenses/>. + + +#include "vregs.h" + + .text + +START_FUNC ___adddi3 + + movw hl, sp ; use HL-based addressing (allows for direct addw) + + movw ax, [hl+4] + addw ax, [hl+12] + movw r8, ax + + mov a, [hl+6] ; middle bytes of the result are determined using 8-bit + addc a, [hl+14] ; ADDC insns which both account for and update the carry bit + mov r10, a ; (no ADDWC instruction is available) + mov a, [hl+7] + addc a, [hl+15] + mov r11, a + + mov a, [hl+8] + addc a, [hl+16] + mov r12, a + mov a, [hl+9] + addc a, [hl+17] + mov r13, a + + movw ax, [hl+10] + sknc ; account for the possible carry from the + incw ax ; latest 8-bit operation + addw ax, [hl+18] + movw r14, ax + + ret + +END_FUNC ___adddi3 |