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/*
* SHA-512 hash in x86-64 assembly
*
* Copyright (c) 2017 Project Nayuki. (MIT License)
* https://www.nayuki.io/page/fast-sha2-hashes-in-x86-assembly
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
* - The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
* - The Software is provided "as is", without warranty of any kind, express or
* implied, including but not limited to the warranties of merchantability,
* fitness for a particular purpose and noninfringement. In no event shall the
* authors or copyright holders be liable for any claim, damages or other
* liability, whether in an action of contract, tort or otherwise, arising from,
* out of or in connection with the Software or the use or other dealings in the
* Software.
*/
/* void sha512_compress(uint64_t state[8], const uint8_t block[128]) */
#ifdef __APPLE__
.globl _sha512_compress
_sha512_compress:
#else
.globl sha512_compress
sha512_compress:
#endif
/*
* Storage usage:
* Bytes Location Description
* 8 rax Temporary for calculation per round
* 8 rbx Temporary for calculation per round
* 8 rcx Temporary for calculation per round
* 8 rdx Temporary for calculation per round
* 8 rsi Base address of block array argument (read-only)
* 8 rdi Base address of state array argument (read-only)
* 8 rsp x86-64 stack pointer
* 8 r8 SHA-512 state variable A
* 8 r9 SHA-512 state variable B
* 8 r10 SHA-512 state variable C
* 8 r11 SHA-512 state variable D
* 8 r12 SHA-512 state variable E
* 8 r13 SHA-512 state variable F
* 8 r14 SHA-512 state variable G
* 8 r15 SHA-512 state variable H
* 128 [rsp+0] Circular buffer of most recent 16 key schedule items, 8 bytes each
* 16 xmm0 Caller's value of r10 (only low 64 bits are used)
* 16 xmm1 Caller's value of r11 (only low 64 bits are used)
* 16 xmm2 Caller's value of r12 (only low 64 bits are used)
* 16 xmm3 Caller's value of r13 (only low 64 bits are used)
* 16 xmm4 Caller's value of r14 (only low 64 bits are used)
* 16 xmm5 Caller's value of r15 (only low 64 bits are used)
* 16 xmm6 Caller's value of rbx (only low 64 bits are used)
*/
#define SCHED(i) (((i)&0xF)*8)(%rsp)
#define ROUNDa(i, a, b, c, d, e, f, g, h, k) \
movq (i*8)(%rsi), %rbx; \
bswapq %rbx; \
movq %rbx, SCHED(i); \
ROUNDTAIL(a, b, c, d, e, f, g, h, k)
#define ROUNDb(i, a, b, c, d, e, f, g, h, k) \
movq SCHED(i-15), %rax; \
movq SCHED(i-16), %rbx; \
addq SCHED(i- 7), %rbx; \
movq %rax, %rcx; \
movq %rax, %rdx; \
rorq $8, %rcx; \
shrq $7, %rdx; \
rorq $1, %rax; \
xorq %rdx, %rcx; \
xorq %rcx, %rax; \
addq %rax, %rbx; \
movq SCHED(i- 2), %rax; \
movq %rax, %rcx; \
movq %rax, %rdx; \
rorq $61, %rcx; \
shrq $6, %rdx; \
rorq $19, %rax; \
xorq %rdx, %rcx; \
xorq %rcx, %rax; \
addq %rax, %rbx; \
movq %rbx, SCHED(i); \
ROUNDTAIL(a, b, c, d, e, f, g, h, k)
#define ROUNDTAIL(a, b, c, d, e, f, g, h, k) \
/* Part 0 */ \
/* ROR transformation inspired by Intel's SHA-256 implementation */ \
movq %e, %rax; \
rorq $23, %rax; \
xorq %e, %rax; \
rorq $4, %rax; \
xorq %e, %rax; \
rorq $14, %rax; \
addq %rbx, %h; \
movq %g, %rcx; \
xorq %f, %rcx; \
andq %e, %rcx; \
xorq %g, %rcx; \
addq %rax, %h; \
movabs $k, %rax; \
addq %rcx, %h; \
addq %rax, %h; \
/* Part 1 */ \
addq %h, %d; \
/* Part 2 */ \
/* ROR transformation inspired by Intel's SHA-256 implementation */ \
movq %a, %rax; \
rorq $5, %rax; \
xorq %a, %rax; \
rorq $6, %rax; \
xorq %a, %rax; \
rorq $28, %rax; \
movq %c, %rcx; \
addq %rax, %h; \
movq %c, %rax; \
orq %b, %rax; \
andq %b, %rcx; \
andq %a, %rax; \
orq %rcx, %rax; \
addq %rax, %h;
/* Save registers, allocate scratch space */
movq %r10, %xmm0
movq %r11, %xmm1
movq %r12, %xmm2
movq %r13, %xmm3
movq %r14, %xmm4
movq %r15, %xmm5
movq %rbx, %xmm6
subq $128, %rsp
/* Load state */
movq 0(%rdi), %r8 /* a */
movq 8(%rdi), %r9 /* b */
movq 16(%rdi), %r10 /* c */
movq 24(%rdi), %r11 /* d */
movq 32(%rdi), %r12 /* e */
movq 40(%rdi), %r13 /* f */
movq 48(%rdi), %r14 /* g */
movq 56(%rdi), %r15 /* h */
/* Do 80 rounds of hashing */
ROUNDa( 0, r8 , r9 , r10, r11, r12, r13, r14, r15, 0x428A2F98D728AE22)
ROUNDa( 1, r15, r8 , r9 , r10, r11, r12, r13, r14, 0x7137449123EF65CD)
ROUNDa( 2, r14, r15, r8 , r9 , r10, r11, r12, r13, 0xB5C0FBCFEC4D3B2F)
ROUNDa( 3, r13, r14, r15, r8 , r9 , r10, r11, r12, 0xE9B5DBA58189DBBC)
ROUNDa( 4, r12, r13, r14, r15, r8 , r9 , r10, r11, 0x3956C25BF348B538)
ROUNDa( 5, r11, r12, r13, r14, r15, r8 , r9 , r10, 0x59F111F1B605D019)
ROUNDa( 6, r10, r11, r12, r13, r14, r15, r8 , r9 , 0x923F82A4AF194F9B)
ROUNDa( 7, r9 , r10, r11, r12, r13, r14, r15, r8 , 0xAB1C5ED5DA6D8118)
ROUNDa( 8, r8 , r9 , r10, r11, r12, r13, r14, r15, 0xD807AA98A3030242)
ROUNDa( 9, r15, r8 , r9 , r10, r11, r12, r13, r14, 0x12835B0145706FBE)
ROUNDa(10, r14, r15, r8 , r9 , r10, r11, r12, r13, 0x243185BE4EE4B28C)
ROUNDa(11, r13, r14, r15, r8 , r9 , r10, r11, r12, 0x550C7DC3D5FFB4E2)
ROUNDa(12, r12, r13, r14, r15, r8 , r9 , r10, r11, 0x72BE5D74F27B896F)
ROUNDa(13, r11, r12, r13, r14, r15, r8 , r9 , r10, 0x80DEB1FE3B1696B1)
ROUNDa(14, r10, r11, r12, r13, r14, r15, r8 , r9 , 0x9BDC06A725C71235)
ROUNDa(15, r9 , r10, r11, r12, r13, r14, r15, r8 , 0xC19BF174CF692694)
ROUNDb(16, r8 , r9 , r10, r11, r12, r13, r14, r15, 0xE49B69C19EF14AD2)
ROUNDb(17, r15, r8 , r9 , r10, r11, r12, r13, r14, 0xEFBE4786384F25E3)
ROUNDb(18, r14, r15, r8 , r9 , r10, r11, r12, r13, 0x0FC19DC68B8CD5B5)
ROUNDb(19, r13, r14, r15, r8 , r9 , r10, r11, r12, 0x240CA1CC77AC9C65)
ROUNDb(20, r12, r13, r14, r15, r8 , r9 , r10, r11, 0x2DE92C6F592B0275)
ROUNDb(21, r11, r12, r13, r14, r15, r8 , r9 , r10, 0x4A7484AA6EA6E483)
ROUNDb(22, r10, r11, r12, r13, r14, r15, r8 , r9 , 0x5CB0A9DCBD41FBD4)
ROUNDb(23, r9 , r10, r11, r12, r13, r14, r15, r8 , 0x76F988DA831153B5)
ROUNDb(24, r8 , r9 , r10, r11, r12, r13, r14, r15, 0x983E5152EE66DFAB)
ROUNDb(25, r15, r8 , r9 , r10, r11, r12, r13, r14, 0xA831C66D2DB43210)
ROUNDb(26, r14, r15, r8 , r9 , r10, r11, r12, r13, 0xB00327C898FB213F)
ROUNDb(27, r13, r14, r15, r8 , r9 , r10, r11, r12, 0xBF597FC7BEEF0EE4)
ROUNDb(28, r12, r13, r14, r15, r8 , r9 , r10, r11, 0xC6E00BF33DA88FC2)
ROUNDb(29, r11, r12, r13, r14, r15, r8 , r9 , r10, 0xD5A79147930AA725)
ROUNDb(30, r10, r11, r12, r13, r14, r15, r8 , r9 , 0x06CA6351E003826F)
ROUNDb(31, r9 , r10, r11, r12, r13, r14, r15, r8 , 0x142929670A0E6E70)
ROUNDb(32, r8 , r9 , r10, r11, r12, r13, r14, r15, 0x27B70A8546D22FFC)
ROUNDb(33, r15, r8 , r9 , r10, r11, r12, r13, r14, 0x2E1B21385C26C926)
ROUNDb(34, r14, r15, r8 , r9 , r10, r11, r12, r13, 0x4D2C6DFC5AC42AED)
ROUNDb(35, r13, r14, r15, r8 , r9 , r10, r11, r12, 0x53380D139D95B3DF)
ROUNDb(36, r12, r13, r14, r15, r8 , r9 , r10, r11, 0x650A73548BAF63DE)
ROUNDb(37, r11, r12, r13, r14, r15, r8 , r9 , r10, 0x766A0ABB3C77B2A8)
ROUNDb(38, r10, r11, r12, r13, r14, r15, r8 , r9 , 0x81C2C92E47EDAEE6)
ROUNDb(39, r9 , r10, r11, r12, r13, r14, r15, r8 , 0x92722C851482353B)
ROUNDb(40, r8 , r9 , r10, r11, r12, r13, r14, r15, 0xA2BFE8A14CF10364)
ROUNDb(41, r15, r8 , r9 , r10, r11, r12, r13, r14, 0xA81A664BBC423001)
ROUNDb(42, r14, r15, r8 , r9 , r10, r11, r12, r13, 0xC24B8B70D0F89791)
ROUNDb(43, r13, r14, r15, r8 , r9 , r10, r11, r12, 0xC76C51A30654BE30)
ROUNDb(44, r12, r13, r14, r15, r8 , r9 , r10, r11, 0xD192E819D6EF5218)
ROUNDb(45, r11, r12, r13, r14, r15, r8 , r9 , r10, 0xD69906245565A910)
ROUNDb(46, r10, r11, r12, r13, r14, r15, r8 , r9 , 0xF40E35855771202A)
ROUNDb(47, r9 , r10, r11, r12, r13, r14, r15, r8 , 0x106AA07032BBD1B8)
ROUNDb(48, r8 , r9 , r10, r11, r12, r13, r14, r15, 0x19A4C116B8D2D0C8)
ROUNDb(49, r15, r8 , r9 , r10, r11, r12, r13, r14, 0x1E376C085141AB53)
ROUNDb(50, r14, r15, r8 , r9 , r10, r11, r12, r13, 0x2748774CDF8EEB99)
ROUNDb(51, r13, r14, r15, r8 , r9 , r10, r11, r12, 0x34B0BCB5E19B48A8)
ROUNDb(52, r12, r13, r14, r15, r8 , r9 , r10, r11, 0x391C0CB3C5C95A63)
ROUNDb(53, r11, r12, r13, r14, r15, r8 , r9 , r10, 0x4ED8AA4AE3418ACB)
ROUNDb(54, r10, r11, r12, r13, r14, r15, r8 , r9 , 0x5B9CCA4F7763E373)
ROUNDb(55, r9 , r10, r11, r12, r13, r14, r15, r8 , 0x682E6FF3D6B2B8A3)
ROUNDb(56, r8 , r9 , r10, r11, r12, r13, r14, r15, 0x748F82EE5DEFB2FC)
ROUNDb(57, r15, r8 , r9 , r10, r11, r12, r13, r14, 0x78A5636F43172F60)
ROUNDb(58, r14, r15, r8 , r9 , r10, r11, r12, r13, 0x84C87814A1F0AB72)
ROUNDb(59, r13, r14, r15, r8 , r9 , r10, r11, r12, 0x8CC702081A6439EC)
ROUNDb(60, r12, r13, r14, r15, r8 , r9 , r10, r11, 0x90BEFFFA23631E28)
ROUNDb(61, r11, r12, r13, r14, r15, r8 , r9 , r10, 0xA4506CEBDE82BDE9)
ROUNDb(62, r10, r11, r12, r13, r14, r15, r8 , r9 , 0xBEF9A3F7B2C67915)
ROUNDb(63, r9 , r10, r11, r12, r13, r14, r15, r8 , 0xC67178F2E372532B)
ROUNDb(64, r8 , r9 , r10, r11, r12, r13, r14, r15, 0xCA273ECEEA26619C)
ROUNDb(65, r15, r8 , r9 , r10, r11, r12, r13, r14, 0xD186B8C721C0C207)
ROUNDb(66, r14, r15, r8 , r9 , r10, r11, r12, r13, 0xEADA7DD6CDE0EB1E)
ROUNDb(67, r13, r14, r15, r8 , r9 , r10, r11, r12, 0xF57D4F7FEE6ED178)
ROUNDb(68, r12, r13, r14, r15, r8 , r9 , r10, r11, 0x06F067AA72176FBA)
ROUNDb(69, r11, r12, r13, r14, r15, r8 , r9 , r10, 0x0A637DC5A2C898A6)
ROUNDb(70, r10, r11, r12, r13, r14, r15, r8 , r9 , 0x113F9804BEF90DAE)
ROUNDb(71, r9 , r10, r11, r12, r13, r14, r15, r8 , 0x1B710B35131C471B)
ROUNDb(72, r8 , r9 , r10, r11, r12, r13, r14, r15, 0x28DB77F523047D84)
ROUNDb(73, r15, r8 , r9 , r10, r11, r12, r13, r14, 0x32CAAB7B40C72493)
ROUNDb(74, r14, r15, r8 , r9 , r10, r11, r12, r13, 0x3C9EBE0A15C9BEBC)
ROUNDb(75, r13, r14, r15, r8 , r9 , r10, r11, r12, 0x431D67C49C100D4C)
ROUNDb(76, r12, r13, r14, r15, r8 , r9 , r10, r11, 0x4CC5D4BECB3E42B6)
ROUNDb(77, r11, r12, r13, r14, r15, r8 , r9 , r10, 0x597F299CFC657E2A)
ROUNDb(78, r10, r11, r12, r13, r14, r15, r8 , r9 , 0x5FCB6FAB3AD6FAEC)
ROUNDb(79, r9 , r10, r11, r12, r13, r14, r15, r8 , 0x6C44198C4A475817)
/* Add to state */
addq %r8 , 0(%rdi)
addq %r9 , 8(%rdi)
addq %r10, 16(%rdi)
addq %r11, 24(%rdi)
addq %r12, 32(%rdi)
addq %r13, 40(%rdi)
addq %r14, 48(%rdi)
addq %r15, 56(%rdi)
/* Restore registers */
movq %xmm0, %r10
movq %xmm1, %r11
movq %xmm2, %r12
movq %xmm3, %r13
movq %xmm4, %r14
movq %xmm5, %r15
movq %xmm6, %rbx
addq $128, %rsp
retq
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