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Revisiting Keccak and Dilithium Implementations on ARMv7-M (#338)
* Use Plantard arithmetic for NTT_769 in Dilithium * rm old smallntt.S * update benchmarks --------- Co-authored-by: Matthias J. Kannwischer <[email protected]>
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| /** | ||
| * Copyright (c) 2023 Junhao Huang ([email protected]) | ||
| * | ||
| * Licensed under the Apache License, Version 2.0(the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| #ifndef MACROS_SMALLNTT_I | ||
| #define MACROS_SMALLNTT_I | ||
|
|
||
| // general macros | ||
| .macro load a, a0, a1, a2, a3, mem0, mem1, mem2, mem3 | ||
| ldr.w \a0, [\a, \mem0] | ||
| ldr.w \a1, [\a, \mem1] | ||
| ldr.w \a2, [\a, \mem2] | ||
| ldr.w \a3, [\a, \mem3] | ||
| .endm | ||
|
|
||
| .macro store a, a0, a1, a2, a3, mem0, mem1, mem2, mem3 | ||
| str.w \a0, [\a, \mem0] | ||
| str.w \a1, [\a, \mem1] | ||
| str.w \a2, [\a, \mem2] | ||
| str.w \a3, [\a, \mem3] | ||
| .endm | ||
|
|
||
| .macro doubleplant a, tmp, q, qa, plantconst | ||
| smulwb \tmp, \plantconst, \a | ||
| smulwt \a, \plantconst, \a | ||
| smlabt \tmp, \tmp, \q, \qa | ||
| smlabt \a, \a, \q, \qa | ||
| pkhtb \a, \a, \tmp, asr#16 | ||
| .endm | ||
|
|
||
| .macro doublebarrett a, tmp, tmp2, q, barrettconst | ||
| smulbb \tmp, \a, \barrettconst | ||
| smultb \tmp2, \a, \barrettconst | ||
| asr \tmp, \tmp, #26 | ||
| asr \tmp2, \tmp2, #26 | ||
| smulbb \tmp, \tmp, \q | ||
| smulbb \tmp2, \tmp2, \q | ||
| pkhbt \tmp, \tmp, \tmp2, lsl#16 | ||
| usub16 \a, \a, \tmp | ||
| .endm | ||
|
|
||
| // q locate in the top half of the register | ||
| .macro plant_red q, qa, qinv, tmp | ||
| mul \tmp, \tmp, \qinv | ||
| //tmp*qinv mod 2^2n/ 2^n; in high half | ||
| smlatt \tmp, \tmp, \q, \qa | ||
| // result in high half | ||
| .endm | ||
|
|
||
| .macro mul_twiddle_plant a, twiddle, tmp, q, qa | ||
| smulwb \tmp, \twiddle, \a | ||
| smulwt \a, \twiddle, \a | ||
| smlabt \tmp, \tmp, \q, \qa | ||
| smlabt \a, \a, \q, \qa | ||
| pkhtb \a, \a, \tmp, asr#16 | ||
| .endm | ||
|
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||
| .macro doublebutterfly_plant a0, a1, twiddle, tmp, q, qa | ||
| smulwb \tmp, \twiddle, \a1 | ||
| smulwt \a1, \twiddle, \a1 | ||
| smlabt \tmp, \tmp, \q, \qa | ||
| smlabt \a1, \a1, \q, \qa | ||
| pkhtb \tmp, \a1, \tmp, asr#16 | ||
| usub16 \a1, \a0, \tmp | ||
| uadd16 \a0, \a0, \tmp | ||
| .endm | ||
|
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||
| .macro two_doublebutterfly_plant a0, a1, a2, a3, twiddle0, twiddle1, tmp, q, qa | ||
| doublebutterfly_plant \a0, \a1, \twiddle0, \tmp, \q, \qa | ||
| doublebutterfly_plant \a2, \a3, \twiddle1, \tmp, \q, \qa | ||
| .endm | ||
|
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||
| //For 3329 | ||
| .macro fullplant a0, a1, a2, a3, a4, a5, a6, a7, tmp, q, qa, plantconst | ||
| movw \plantconst, #44984 | ||
| movt \plantconst, #19 | ||
| doubleplant \a0, \tmp, \q, \qa, \plantconst | ||
| doubleplant \a1, \tmp, \q, \qa, \plantconst | ||
| doubleplant \a2, \tmp, \q, \qa, \plantconst | ||
| doubleplant \a3, \tmp, \q, \qa, \plantconst | ||
| doubleplant \a4, \tmp, \q, \qa, \plantconst | ||
| doubleplant \a5, \tmp, \q, \qa, \plantconst | ||
| doubleplant \a6, \tmp, \q, \qa, \plantconst | ||
| doubleplant \a7, \tmp, \q, \qa, \plantconst | ||
| .endm | ||
|
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||
| #endif |
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