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author | Niels M?ller <nisse@lysator.liu.se> | 2013-03-13 14:47:27 +0100 |
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committer | Niels M?ller <nisse@lysator.liu.se> | 2013-03-13 14:47:27 +0100 |
commit | dae88efa12286944b71b38e8620f3e9f278dc4d8 (patch) | |
tree | d81c933cbcbdec1aa55c60ba924c29ef15bf4323 /mpn/arm/cnd_aors_n.asm | |
parent | 359e623118a57cf3b350d86147e3ee508a5befb9 (diff) | |
download | gmp-dae88efa12286944b71b38e8620f3e9f278dc4d8.tar.gz |
Renaming of mpn_addcnd_n and mpn_subcnd_n to mpn_cnd_*.
Diffstat (limited to 'mpn/arm/cnd_aors_n.asm')
-rw-r--r-- | mpn/arm/cnd_aors_n.asm | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/mpn/arm/cnd_aors_n.asm b/mpn/arm/cnd_aors_n.asm new file mode 100644 index 000000000..4f7a31203 --- /dev/null +++ b/mpn/arm/cnd_aors_n.asm @@ -0,0 +1,122 @@ +dnl ARM mpn_cnd_add_n, mpn_cnd_sub_n + +dnl Copyright 2012 Free Software Foundation, Inc. + +dnl This file is part of the GNU MP Library. + +dnl The GNU MP Library is free software; you can redistribute it and/or modify +dnl it under the terms of the GNU Lesser General Public License as published +dnl by the Free Software Foundation; either version 3 of the License, or (at +dnl your option) any later version. + +dnl The GNU MP Library is distributed in the hope that it will be useful, but +dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY +dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public +dnl License for more details. + +dnl You should have received a copy of the GNU Lesser General Public License +dnl along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. + +include(`../config.m4') + +C cycles/limb +C StrongARM ? +C XScale ? +C Cortex-A8 ? +C Cortex-A9 2.5 slightly fluctuating +C Cortex-A15 ? + +define(`cnd', `r0') +define(`rp', `r1') +define(`up', `r2') +define(`vp', `r3') + +define(`n', `r12') + + +ifdef(`OPERATION_cnd_add_n', ` + define(`ADDSUB', adds) + define(`ADDSUBC', adcs) + define(`INITCY', `cmn r0, #0') + define(`RETVAL', `adc r0, n, #0') + define(func, mpn_cnd_add_n)') +ifdef(`OPERATION_cnd_sub_n', ` + define(`ADDSUB', subs) + define(`ADDSUBC', sbcs) + define(`INITCY', `cmp r0, #0') + define(`RETVAL', `adc r0, n, #0 + rsb r0, r0, #1') + define(func, mpn_cnd_sub_n)') + +MULFUNC_PROLOGUE(mpn_cnd_add_n mpn_cnd_sub_n) + +ASM_START() +PROLOGUE(func) + push {r4-r11} + ldr n, [sp, #32] + + INITCY C really only needed for n = 0 (mod 4) + + teq cnd, #0 C could use this for clearing/setting cy + mvnne cnd, #0 C conditionally set to 0xffffffff + + ands r4, n, #3 + beq L(top) + cmp r4, #2 + bcc L(b1) + beq L(b2) + +L(b3): ldm vp!, {r4,r5,r6} + ldm up!, {r8,r9,r10} + and r4, r4, cnd + and r5, r5, cnd + and r6, r6, cnd + ADDSUB r8, r8, r4 + ADDSUBC r9, r9, r5 + ADDSUBC r10, r10, r6 + stm rp!, {r8,r9,r10} + sub n, n, #3 + teq n, #0 + bne L(top) + b L(end) + +L(b2): ldm vp!, {r4,r5} + ldm up!, {r8,r9} + and r4, r4, cnd + and r5, r5, cnd + ADDSUB r8, r8, r4 + ADDSUBC r9, r9, r5 + stm rp!, {r8,r9} + sub n, n, #2 + teq n, #0 + bne L(top) + b L(end) + +L(b1): ldr r4, [vp], #4 + ldr r8, [up], #4 + and r4, r4, cnd + ADDSUB r8, r8, r4 + str r8, [rp], #4 + sub n, n, #1 + teq n, #0 + beq L(end) + +L(top): ldm vp!, {r4,r5,r6,r7} + ldm up!, {r8,r9,r10,r11} + and r4, r4, cnd + and r5, r5, cnd + and r6, r6, cnd + and r7, r7, cnd + ADDSUBC r8, r8, r4 + ADDSUBC r9, r9, r5 + ADDSUBC r10, r10, r6 + ADDSUBC r11, r11, r7 + sub n, n, #4 + stm rp!, {r8,r9,r10,r11} + teq n, #0 + bne L(top) + +L(end): RETVAL + pop {r4-r11} + bx r14 +EPILOGUE() |