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Diffstat (limited to 'sparc64/arcfour-crypt.asm')
| -rw-r--r-- | sparc64/arcfour-crypt.asm | 229 |
1 files changed, 0 insertions, 229 deletions
diff --git a/sparc64/arcfour-crypt.asm b/sparc64/arcfour-crypt.asm deleted file mode 100644 index ffb5edf4..00000000 --- a/sparc64/arcfour-crypt.asm +++ /dev/null @@ -1,229 +0,0 @@ -C sparc64/arcfour-crypt.asm - -ifelse(` - Copyright (C) 2002, 2005 Niels Möller - - This file is part of GNU Nettle. - - GNU Nettle is free software: you can redistribute it and/or - modify it under the terms of either: - - * the GNU Lesser General Public License as published by the Free - Software Foundation; either version 3 of the License, or (at your - option) any later version. - - or - - * the GNU General Public License as published by the Free - Software Foundation; either version 2 of the License, or (at your - option) any later version. - - or both in parallel, as here. - - GNU Nettle 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. - - You should have received copies of the GNU General Public License and - the GNU Lesser General Public License along with this program. If - not, see http://www.gnu.org/licenses/. -') - -C Define to YES, to enable the complex code to special case SRC -C and DST with compatible alignment. - -define(`WITH_ALIGN', `YES') - -C Registers - -define(`CTX', `%i0') -define(`LENGTH',`%i1') -define(`DST', `%i2') -define(`SRC', `%i3') - -define(`I1', `%i4') -define(`I2', `%i5') -define(`J', `%g1') -define(`SI', `%g2') -define(`SJ', `%g3') -define(`TMP', `%o0') -define(`TMP2', `%o1') -define(`N', `%o2') -define(`DATA', `%o3') - -C Computes the next byte of the key stream. As input, i must -C already point to the index for the current access, the index -C for the next access is stored in ni. The resulting key byte is -C stored in res. -C ARCFOUR_BYTE(i, ni, res) -define(`ARCFOUR_BYTE', ` - ldub [CTX + $1], SI - add $1, 1, $2 - add J, SI, J - and J, 0xff, J - ldub [CTX + J], SJ - and $2, 0xff, $2 - stb SI, [CTX + J] - add SI, SJ, SI - and SI, 0xff, SI - stb SJ, [CTX + $1] - ldub [CTX + SI], $3 -')dnl - -define(`FRAME_SIZE', 192) - - .file "arcfour-crypt.asm" - - C arcfour_crypt(struct arcfour_ctx *ctx, - C size_t length, uint8_t *dst, - C const uint8_t *src) - - .section ".text" - .align 16 - .proc 020 - -PROLOGUE(nettle_arcfour_crypt) - - save %sp, -FRAME_SIZE, %sp - cmp LENGTH, 0 - be .Lend - nop - - C Load both I and J - lduh [CTX + ARCFOUR_I], I1 - and I1, 0xff, J - srl I1, 8, I1 - - C We want an even address for DST - andcc DST, 1, %g0 - add I1, 1 ,I1 - beq .Laligned2 - and I1, 0xff, I1 - - mov I1, I2 - ldub [SRC], DATA - ARCFOUR_BYTE(I2, I1, TMP) - subcc LENGTH, 1, LENGTH - add SRC, 1, SRC - xor DATA, TMP, DATA - stb DATA, [DST] - beq .Ldone - add DST, 1, DST - -.Laligned2: - - cmp LENGTH, 2 - blu .Lfinal1 - C Harmless delay slot instruction - andcc DST, 2, %g0 - beq .Laligned4 - nop - - ldub [SRC], DATA - ARCFOUR_BYTE(I1, I2, TMP) - ldub [SRC + 1], TMP2 - add SRC, 2, SRC - xor DATA, TMP, DATA - sll DATA, 8, DATA - - ARCFOUR_BYTE(I2, I1, TMP) - xor TMP2, TMP, TMP - subcc LENGTH, 2, LENGTH - or DATA, TMP, DATA - - sth DATA, [DST] - beq .Ldone - add DST, 2, DST - -.Laligned4: - cmp LENGTH, 4 - blu .Lfinal2 - C Harmless delay slot instruction - srl LENGTH, 2, N - -.Loop: - C Main loop, with aligned writes - - C FIXME: Could check if SRC is aligned, and - C use 32-bit reads in that case. - - ldub [SRC], DATA - ARCFOUR_BYTE(I1, I2, TMP) - ldub [SRC + 1], TMP2 - xor TMP, DATA, DATA - sll DATA, 8, DATA - - ARCFOUR_BYTE(I2, I1, TMP) - xor TMP2, TMP, TMP - ldub [SRC + 2], TMP2 - or TMP, DATA, DATA - sll DATA, 8, DATA - - ARCFOUR_BYTE(I1, I2, TMP) - xor TMP2, TMP, TMP - ldub [SRC + 3], TMP2 - or TMP, DATA, DATA - sll DATA, 8, DATA - - ARCFOUR_BYTE(I2, I1, TMP) - xor TMP2, TMP, TMP - or TMP, DATA, DATA - subcc N, 1, N - add SRC, 4, SRC - st DATA, [DST] - bne .Loop - add DST, 4, DST - - andcc LENGTH, 3, LENGTH - beq .Ldone - nop - -.Lfinal2: - C DST address must be 2-aligned - cmp LENGTH, 2 - blu .Lfinal1 - nop - - ldub [SRC], DATA - ARCFOUR_BYTE(I1, I2, TMP) - ldub [SRC + 1], TMP2 - add SRC, 2, SRC - xor DATA, TMP, DATA - sll DATA, 8, DATA - - ARCFOUR_BYTE(I2, I1, TMP) - xor TMP2, TMP, TMP - or DATA, TMP, DATA - - sth DATA, [DST] - beq .Ldone - add DST, 2, DST - -.Lfinal1: - mov I1, I2 - ldub [SRC], DATA - ARCFOUR_BYTE(I2, I1, TMP) - xor DATA, TMP, DATA - stb DATA, [DST] - -.Ldone: - C Save back I and J - sll I2, 8, I2 - or I2, J, I2 - stuh I2, [CTX + ARCFOUR_I] - -.Lend: - ret - restore - -EPILOGUE(nettle_arcfour_crypt) - -C Stats for AES 128 on sellafield.lysator.liu.se (UE450, 296 MHz) - -C 1: nettle-1.13 C-code -C 2: New assembler code (basically the same as for sparc32) - -C MB/s cycles/byte -C 1: 3.6 77.7 -C 2: 21.8 13.0 |