/* Derived from source code of TrueCrypt 7.1a, which is Copyright (c) 2008-2012 TrueCrypt Developers Association and which is governed by the TrueCrypt License 3.0. Modifications and additions to the original source code (contained in this file) and all other portions of this file are Copyright (c) 2013-2016 IDRIX and are governed by the Apache License 2.0 the full text of which is contained in the file License.txt included in VeraCrypt binary and source code distribution packages. */ #include "Bios.h" #include "BootConsoleIo.h" #include "BootConfig.h" #include "BootDebug.h" #include "BootDefs.h" #include "BootDiskIo.h" #include "BootStrings.h" byte SectorBuffer[TC_LB_SIZE]; #ifdef TC_BOOT_DEBUG_ENABLED static bool SectorBufferInUse = false; void AcquireSectorBuffer () { if (SectorBufferInUse) TC_THROW_FATAL_EXCEPTION; SectorBufferInUse = true; } void ReleaseSectorBuffer () { SectorBufferInUse = false; } #endif bool IsLbaSupported (byte drive) { static byte CachedDrive = TC_INVALID_BIOS_DRIVE; static bool CachedStatus; uint16 result = 0; if (CachedDrive == drive) goto ret; __asm { mov bx, 0x55aa mov dl, drive mov ah, 0x41 int 0x13 jc err mov result, bx err: } CachedDrive = drive; CachedStatus = (result == 0xaa55); ret: return CachedStatus; } void PrintDiskError (BiosResult error, bool write, byte drive, const uint64 *sector, const ChsAddress *chs) { PrintEndl(); Print (write ? "Write" : "Read"); Print (" error:"); Print (error); Print (" Drive:"); Print (drive ^ 0x80); if (sector) { Print (" Sector:"); Print (*sector); } if (chs) { Print (" CHS:"); Print (*chs); } PrintEndl(); Beep(); } void Print (const ChsAddress &chs) { Print (chs.Cylinder); PrintChar ('/'); Print (chs.Head); PrintChar ('/'); Print (chs.Sector); } void PrintSectorCountInMB (const uint64 §orCount) { Print (sectorCount >> (TC_LB_SIZE_BIT_SHIFT_DIVISOR + 2)); Print (" MB "); } BiosResult ReadWriteSectors (bool write, uint16 bufferSegment, uint16 bufferOffset, byte drive, const ChsAddress &chs, byte sectorCount, bool silent) { CheckStack(); byte cylinderLow = (byte) chs.Cylinder; byte sector = chs.Sector; sector |= byte (chs.Cylinder >> 2) & 0xc0; byte function = write ? 0x03 : 0x02; BiosResult result; byte tryCount = TC_MAX_BIOS_DISK_IO_RETRIES; do { result = BiosResultSuccess; __asm { push es mov ax, bufferSegment mov es, ax mov bx, bufferOffset mov dl, drive mov ch, cylinderLow mov si, chs mov dh, [si].Head mov cl, sector mov al, sectorCount mov ah, function int 0x13 jnc ok // If CF=0, ignore AH to prevent issues caused by potential bugs in BIOSes mov result, ah ok: pop es } if (result == BiosResultEccCorrected) result = BiosResultSuccess; // Some BIOSes report I/O errors prematurely in some cases } while (result != BiosResultSuccess && --tryCount != 0); if (!silent && result != BiosResultSuccess) PrintDiskError (result, write, drive, nullptr, &chs); return result; } BiosResult ReadWriteSectors (bool write, byte *buffer, byte drive, const ChsAddress &chs, byte sectorCount, bool silent) { uint16 codeSeg; __asm mov codeSeg, cs return ReadWriteSectors (write, codeSeg, (uint16) buffer, drive, chs, sectorCount, silent); } BiosResult ReadSectors (byte *buffer, byte drive, const ChsAddress &chs, byte sectorCount, bool silent) { return ReadWriteSectors (false, buffer, drive, chs, sectorCount, silent); } BiosResult WriteSectors (byte *buffer, byte drive, const ChsAddress &chs, byte sectorCount, bool silent) { return ReadWriteSectors (true, buffer, drive, chs, sectorCount, silent); } static BiosResult ReadWriteSectors (bool write, BiosLbaPacket &dapPacket, byte drive, const uint64 §or, uint16 sectorCount, bool silent) { CheckStack(); if (!IsLbaSupported (drive)) { DriveGeometry geometry; BiosResult result = GetDriveGeometry (drive, geometry, silent); if (result != BiosResultSuccess) return result; ChsAddress chs; LbaToChs (geometry, sector, chs); return ReadWriteSectors (write, (uint16) (dapPacket.Buffer >> 16), (uint16) dapPacket.Buffer, drive, chs, sectorCount, silent); } dapPacket.Size = sizeof (dapPacket); dapPacket.Reserved = 0; dapPacket.SectorCount = sectorCount; dapPacket.Sector = sector; byte function = write ? 0x43 : 0x42; BiosResult result; byte tryCount = TC_MAX_BIOS_DISK_IO_RETRIES; do { result = BiosResultSuccess; __asm { mov bx, 0x55aa mov dl, drive mov si, [dapPacket] mov ah, function xor al, al int 0x13 jnc ok // If CF=0, ignore AH to prevent issues caused by potential bugs in BIOSes mov result, ah ok: } if (result == BiosResultEccCorrected) result = BiosResultSuccess; // Some BIOSes report I/O errors prematurely in some cases } while (result != BiosResultSuccess && --tryCount != 0); if (!silent && result != BiosResultSuccess) PrintDiskError (result, write, drive, §or); return result; } static BiosResult ReadWriteSectors (bool write, byte *buffer, byte drive, const uint64 §or, uint16 sectorCount, bool silent) { BiosLbaPacket dapPacket; dapPacket.Buffer = (uint32) buffer; return ReadWriteSectors (write, dapPacket, drive, sector, sectorCount, silent); } BiosResult ReadWriteSectors (bool write, uint16 bufferSegment, uint16 bufferOffset, byte drive, const uint64 §or, uint16 sectorCount, bool silent) { BiosLbaPacket dapPacket; dapPacket.Buffer = ((uint32) bufferSegment << 16) | bufferOffset; return ReadWriteSectors (write, dapPacket, drive, sector, sectorCount, silent); } BiosResult ReadSectors (uint16 bufferSegment, uint16 bufferOffset, byte drive, const uint64 §or, uint16 sectorCount, bool silent) { return ReadWriteSectors (false, bufferSegment, bufferOffset, drive, sector, sectorCount, silent); } BiosResult ReadSectors (byte *buffer, byte drive, const uint64 §or, uint16 sectorCount, bool silent) { BiosResult result; uint16 codeSeg; __asm mov codeSeg, cs result = ReadSectors (BootStarted ? codeSeg : TC_BOOT_LOADER_ALT_SEGMENT, (uint16) buffer, drive, sector, sectorCount, silent); // Alternative segment is used to prevent memory corruption caused by buggy BIOSes if (!BootStarted) CopyMemory (TC_BOOT_LOADER_ALT_SEGMENT, (uint16) buffer, buffer, sectorCount * TC_LB_SIZE); return result; } BiosResult WriteSectors (byte *buffer, byte drive, const uint64 §or, uint16 sectorCount, bool silent) { return ReadWriteSectors (true, buffer, drive, sector, sectorCount, silent); } BiosResult GetDriveGeometry (byte drive, DriveGeometry &geometry, bool silent) { CheckStack(); byte maxCylinderLow, maxHead, maxSector; BiosResult result; __asm { push es mov dl, drive mov ah, 0x08 int 0x13 mov result, ah mov maxCylinderLow, ch mov maxSector, cl mov maxHead, dh pop es } if (result == BiosResultSuccess) { geometry.Cylinders = (maxCylinderLow | (uint16 (maxSector & 0xc0) << 2)) + 1; geometry.Heads = maxHead + 1; geometry.Sectors = maxSector & ~0xc0; } else if (!silent) { Print ("Drive "); Print (drive ^ 0x80); Print (" not found: "); PrintErrorNoEndl (""); Print (result); PrintEndl(); } return result; } void ChsToLba (const DriveGeometry &geometry, const ChsAddress &chs, uint64 &lba) { lba.HighPart = 0; lba.LowPart = (uint32 (chs.Cylinder) * geometry.Heads + chs.Head) * geometry.Sectors + chs.Sector - 1; } void LbaToChs (const DriveGeometry &geometry, const uint64 &lba, ChsAddress &chs) { chs.Sector = (byte) ((lba.LowPart % geometry.Sectors) + 1); uint32 ch = lba.LowPart / geometry.Sectors; chs.Head = (byte) (ch % geometry.Heads); chs.Cylinder = (uint16) (ch / geometry.Heads); } void PartitionEntryMBRToPartition (const PartitionEntryMBR &partEntry, Partition &partition) { partition.Active = partEntry.BootIndicator == 0x80; partition.EndSector.HighPart = 0; partition.EndSector.LowPart = partEntry.StartLBA + partEntry.SectorCountLBA - 1; partition.SectorCount.HighPart = 0; partition.SectorCount.LowPart = partEntry.SectorCountLBA; partition.StartSector.HighPart = 0; partition.StartSector.LowPart = partEntry.StartLBA; partition.Type = partEntry.Type; } BiosResult ReadWriteMBR (bool write, byte drive, bool silent) { uint64 mbrSector; mbrSector.HighPart = 0; mbrSector.LowPart = 0; if (write) return WriteSectors (SectorBuffer, drive, mbrSector, 1, silent); return ReadSectors (SectorBuffer, drive, mbrSector, 1, silent); // Uses alternative segment } BiosResult GetDrivePartitions (byte drive, Partition *partitionArray, size_t partitionArrayCapacity, size_t &partitionCount, bool activeOnly, Partition *findPartitionFollowingThis, bool silent) { Partition *followingPartition; Partition tmpPartition; if (findPartitionFollowingThis) { assert (partitionArrayCapacity == 1); partitionArrayCapacity = 0xff; followingPartition = partitionArray; partitionArray = &tmpPartition; followingPartition->Drive = TC_INVALID_BIOS_DRIVE; followingPartition->StartSector.LowPart = 0xFFFFffffUL; } AcquireSectorBuffer(); BiosResult result = ReadWriteMBR (false, drive, silent); ReleaseSectorBuffer(); partitionCount = 0; MBR *mbr = (MBR *) SectorBuffer; if (result != BiosResultSuccess || mbr->Signature != 0xaa55) return result; PartitionEntryMBR mbrPartitions[4]; memcpy (mbrPartitions, mbr->Partitions, sizeof (mbrPartitions)); size_t partitionArrayPos = 0, partitionNumber; for (partitionNumber = 0; partitionNumber < array_capacity (mbrPartitions) && partitionArrayPos < partitionArrayCapacity; ++partitionNumber) { const PartitionEntryMBR &partEntry = mbrPartitions[partitionNumber]; if (partEntry.SectorCountLBA > 0) { Partition &partition = partitionArray[partitionArrayPos]; PartitionEntryMBRToPartition (partEntry, partition); if (activeOnly && !partition.Active) continue; partition.Drive = drive; partition.Number = partitionArrayPos; if (partEntry.Type == 0x5 || partEntry.Type == 0xf) // Extended partition { if (IsLbaSupported (drive)) { // Find all extended partitions uint64 firstExtStartLBA = partition.StartSector; uint64 extStartLBA = partition.StartSector; MBR *extMbr = (MBR *) SectorBuffer; while (partitionArrayPos < partitionArrayCapacity && (result = ReadSectors ((byte *) extMbr, drive, extStartLBA, 1, silent)) == BiosResultSuccess && extMbr->Signature == 0xaa55) { if (extMbr->Partitions[0].SectorCountLBA > 0) { Partition &logPart = partitionArray[partitionArrayPos]; PartitionEntryMBRToPartition (extMbr->Partitions[0], logPart); logPart.Drive = drive; logPart.Number = partitionArrayPos; logPart.Primary = false; logPart.StartSector.LowPart += extStartLBA.LowPart; logPart.EndSector.LowPart += extStartLBA.LowPart; if (findPartitionFollowingThis) { if (logPart.StartSector.LowPart > findPartitionFollowingThis->EndSector.LowPart && logPart.StartSector.LowPart < followingPartition->StartSector.LowPart) { *followingPartition = logPart; } } else ++partitionArrayPos; } // Secondary extended if (extMbr->Partitions[1].Type != 0x5 && extMbr->Partitions[1].Type == 0xf || extMbr->Partitions[1].SectorCountLBA == 0) break; extStartLBA.LowPart = extMbr->Partitions[1].StartLBA + firstExtStartLBA.LowPart; } } } else { partition.Primary = true; if (findPartitionFollowingThis) { if (partition.StartSector.LowPart > findPartitionFollowingThis->EndSector.LowPart && partition.StartSector.LowPart < followingPartition->StartSector.LowPart) { *followingPartition = partition; } } else ++partitionArrayPos; } } } partitionCount = partitionArrayPos; return result; } bool GetActivePartition (byte drive) { size_t partCount; if (GetDrivePartitions (drive, &ActivePartition, 1, partCount, true) != BiosResultSuccess || partCount < 1) { ActivePartition.Drive = TC_INVALID_BIOS_DRIVE; PrintError (TC_BOOT_STR_NO_BOOT_PARTITION); return false; } return true; } ef='#n282'>282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; Copyright (c) 2012, Intel Corporation
;
; All rights reserved.
;
; Redistribution and use in source and binary forms, with or without
; modification, are permitted provided that the following conditions are
; met:
;
; * Redistributions of source code must retain the above copyright
; notice, this list of conditions and the following disclaimer.
;
; * Redistributions in binary form must reproduce the above copyright
; notice, this list of conditions and the following disclaimer in the
; documentation and/or other materials provided with the
; distribution.
;
; * Neither the name of the Intel Corporation nor the names of its
; contributors may be used to endorse or promote products derived from
; this software without specific prior written permission.
;
;
; THIS SOFTWARE IS PROVIDED BY INTEL CORPORATION "AS IS" AND ANY
; EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
; IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
; PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INTEL CORPORATION OR
; CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
; EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
; PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
; PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
; LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
; NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;
; Example YASM command lines:
; Windows: yasm -f x64 -D WINABI sha512_avx.asm
; Linux: yasm -f elf64 sha512_avx.asm
;
BITS 64
section .text
; Virtual Registers
%ifdef WINABI
%define msg rcx ; ARG1
%define digest rdx ; ARG2
%define msglen r8 ; ARG3
%define T1 rsi
%define T2 rdi
%else
%define msg rdi ; ARG1
%define digest rsi ; ARG2
%define msglen rdx ; ARG3
%define T1 rcx
%define T2 r8
%endif
%define a_64 r9
%define b_64 r10
%define c_64 r11
%define d_64 r12
%define e_64 r13
%define f_64 r14
%define g_64 r15
%define h_64 rbx
%define tmp0 rax
; Local variables (stack frame)
; Note: frame_size must be an odd multiple of 8 bytes to XMM align RSP
struc frame
.W: resq 80 ; Message Schedule
.WK: resq 2 ; W[t] + K[t] | W[t+1] + K[t+1]
%ifdef WINABI
.XMMSAVE: resdq 4
.GPRSAVE: resq 7
%else
.GPRSAVE: resq 5
%endif
endstruc
; Useful QWORD "arrays" for simpler memory references
%define MSG(i) msg + 8*(i) ; Input message (arg1)
%define DIGEST(i) digest + 8*(i) ; Output Digest (arg2)
%define K_t(i) K512 + 8*(i) wrt rip ; SHA Constants (static mem)
%define W_t(i) rsp + frame.W + 8*(i) ; Message Schedule (stack frame)
%define WK_2(i) rsp + frame.WK + 8*((i) % 2) ; W[t]+K[t] (stack frame)
; MSG, DIGEST, K_t, W_t are arrays
; WK_2(t) points to 1 of 2 qwords at frame.WK depdending on t being odd/even
%macro RotateState 0
; Rotate symbles a..h right
%xdefine %%TMP h_64
%xdefine h_64 g_64
%xdefine g_64 f_64
%xdefine f_64 e_64
%xdefine e_64 d_64
%xdefine d_64 c_64
%xdefine c_64 b_64
%xdefine b_64 a_64
%xdefine a_64 %%TMP
%endmacro
%macro RORQ 2
; shld is faster than ror on Sandybridge
shld %1, %1, (64 - %2)
%endmacro
%macro SHA512_Round 1
%assign %%t (%1)
; Compute Round %%t
mov T1, f_64 ; T1 = f
mov tmp0, e_64 ; tmp = e
xor T1, g_64 ; T1 = f ^ g
RORQ tmp0, 23 ; 41 ; tmp = e ror 23
and T1, e_64 ; T1 = (f ^ g) & e
xor tmp0, e_64 ; tmp = (e ror 23) ^ e
xor T1, g_64 ; T1 = ((f ^ g) & e) ^ g = CH(e,f,g)
add T1, [WK_2(%%t)] ; W[t] + K[t] from message scheduler
RORQ tmp0, 4 ; 18 ; tmp = ((e ror 23) ^ e) ror 4
xor tmp0, e_64 ; tmp = (((e ror 23) ^ e) ror 4) ^ e
mov T2, a_64 ; T2 = a
add T1, h_64 ; T1 = CH(e,f,g) + W[t] + K[t] + h
RORQ tmp0, 14 ; 14 ; tmp = ((((e ror23)^e)ror4)^e)ror14 = S1(e)
add T1, tmp0 ; T1 = CH(e,f,g) + W[t] + K[t] + S1(e)
mov tmp0, a_64 ; tmp = a
xor T2, c_64 ; T2 = a ^ c
and tmp0, c_64 ; tmp = a & c
and T2, b_64 ; T2 = (a ^ c) & b
xor T2, tmp0 ; T2 = ((a ^ c) & b) ^ (a & c) = Maj(a,b,c)
mov tmp0, a_64 ; tmp = a
RORQ tmp0, 5 ; 39 ; tmp = a ror 5
xor tmp0, a_64 ; tmp = (a ror 5) ^ a
add d_64, T1 ; e(next_state) = d + T1
RORQ tmp0, 6 ; 34 ; tmp = ((a ror 5) ^ a) ror 6
xor tmp0, a_64 ; tmp = (((a ror 5) ^ a) ror 6) ^ a
lea h_64, [T1 + T2] ; a(next_state) = T1 + Maj(a,b,c)
RORQ tmp0, 28 ; 28 ; tmp = ((((a ror5)^a)ror6)^a)ror28 = S0(a)
add h_64, tmp0 ; a(next_state) = T1 + Maj(a,b,c) S0(a)
RotateState
%endmacro
%macro SHA512_2Sched_2Round_avx 1
%assign %%t %1
; Compute rounds %%t-2 and %%t-1
; Compute message schedule QWORDS %%t and %%t+1
; Two rounds are computed based on the values for K[t-2]+W[t-2] and
; K[t-1]+W[t-1] which were previously stored at WK_2 by the message
; scheduler.
; The two new schedule QWORDS are stored at [W_t(%%t)] and [W_t(%%t+1)].
; They are then added to their respective SHA512 constants at
; [K_t(%%t)] and [K_t(%%t+1)] and stored at dqword [WK_2(%%t)]
; For brievity, the comments following vectored instructions only refer to
; the first of a pair of QWORDS.
; Eg. XMM4=W[t-2] really means XMM4={W[t-2]|W[t-1]}
; The computation of the message schedule and the rounds are tightly
; stitched to take advantage of instruction-level parallelism.
; For clarity, integer instructions (for the rounds calculation) are indented
; by one tab. Vectored instructions (for the message scheduler) are indented
; by two tabs.
vmovdqa xmm4, [W_t(%%t-2)] ; XMM4 = W[t-2]
vmovdqu xmm5, [W_t(%%t-15)] ; XMM5 = W[t-15]
mov T1, f_64
vpsrlq xmm0, xmm4, 61 ; XMM0 = W[t-2]>>61
mov tmp0, e_64
vpsrlq xmm6, xmm5, 1 ; XMM6 = W[t-15]>>1
xor T1, g_64
RORQ tmp0, 23 ; 41
vpsrlq xmm1, xmm4, 19 ; XMM1 = W[t-2]>>19
and T1, e_64
xor tmp0, e_64
vpxor xmm0, xmm1 ; XMM0 = W[t-2]>>61 ^ W[t-2]>>19
xor T1, g_64
add T1, [WK_2(%%t)];
vpsrlq xmm7, xmm5, 8 ; XMM7 = W[t-15]>>8
RORQ tmp0, 4 ; 18
vpsrlq xmm2, xmm4, 6 ; XMM2 = W[t-2]>>6
xor tmp0, e_64
mov T2, a_64
add T1, h_64
vpxor xmm6, xmm7 ; XMM6 = W[t-15]>>1 ^ W[t-15]>>8
RORQ tmp0, 14 ; 14
add T1, tmp0
vpsrlq xmm8, xmm5, 7 ; XMM8 = W[t-15]>>7
mov tmp0, a_64
xor T2, c_64
vpsllq xmm3, xmm4, (64-61) ; XMM3 = W[t-2]<<3
and tmp0, c_64
and T2, b_64
vpxor xmm2, xmm3 ; XMM2 = W[t-2]>>6 ^ W[t-2]<<3
xor T2, tmp0
mov tmp0, a_64
vpsllq xmm9, xmm5, (64-1) ; XMM9 = W[t-15]<<63
RORQ tmp0, 5 ; 39
vpxor xmm8, xmm9 ; XMM8 = W[t-15]>>7 ^ W[t-15]<<63
xor tmp0, a_64
add d_64, T1
RORQ tmp0, 6 ; 34
xor tmp0, a_64
vpxor xmm6, xmm8 ; XMM6 = W[t-15]>>1 ^ W[t-15]>>8 ^ W[t-15]>>7 ^ W[t-15]<<63
lea h_64, [T1 + T2]
RORQ tmp0, 28 ; 28
vpsllq xmm4, (64-19) ; XMM4 = W[t-2]<<25
add h_64, tmp0
RotateState
vpxor xmm0, xmm4 ; XMM0 = W[t-2]>>61 ^ W[t-2]>>19 ^ W[t-2]<<25
mov T1, f_64
vpxor xmm0, xmm2 ; XMM0 = s1(W[t-2])
mov tmp0, e_64
xor T1, g_64
vpaddq xmm0, [W_t(%%t-16)] ; XMM0 = s1(W[t-2]) + W[t-16]
vmovdqu xmm1, [W_t(%%t- 7)] ; XMM1 = W[t-7]
RORQ tmp0, 23 ; 41
and T1, e_64
xor tmp0, e_64
xor T1, g_64
vpsllq xmm5, (64-8) ; XMM5 = W[t-15]<<56
add T1, [WK_2(%%t+1)]
vpxor xmm6, xmm5 ; XMM6 = s0(W[t-15])
RORQ tmp0, 4 ; 18
vpaddq xmm0, xmm6 ; XMM0 = s1(W[t-2]) + W[t-16] + s0(W[t-15])
xor tmp0, e_64
vpaddq xmm0, xmm1 ; XMM0 = W[t] = s1(W[t-2]) + W[t-7] + s0(W[t-15]) + W[t-16]
mov T2, a_64
add T1, h_64
RORQ tmp0, 14 ; 14
add T1, tmp0
vmovdqa [W_t(%%t)], xmm0 ; Store W[t]
vpaddq xmm0, [K_t(t)] ; Compute W[t]+K[t]
vmovdqa [WK_2(t)], xmm0 ; Store W[t]+K[t] for next rounds
mov tmp0, a_64
xor T2, c_64
and tmp0, c_64
and T2, b_64
xor T2, tmp0
mov tmp0, a_64
RORQ tmp0, 5 ; 39
xor tmp0, a_64
add d_64, T1
RORQ tmp0, 6 ; 34
xor tmp0, a_64
lea h_64, [T1 + T2]
RORQ tmp0, 28 ; 28
add h_64, tmp0
RotateState
%endmacro
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; void sha512_avx(const void* M, void* D, uint64_t L);
; Purpose: Updates the SHA512 digest stored at D with the message stored in M.
; The size of the message pointed to by M must be an integer multiple of SHA512
; message blocks.
; L is the message length in SHA512 blocks
global sha512_avx:function
sha512_avx:
cmp msglen, 0
je .nowork
; Allocate Stack Space
sub rsp, frame_size
; Save GPRs
mov [rsp + frame.GPRSAVE + 8 * 0], rbx
mov [rsp + frame.GPRSAVE + 8 * 1], r12
mov [rsp + frame.GPRSAVE + 8 * 2], r13
mov [rsp + frame.GPRSAVE + 8 * 3], r14
mov [rsp + frame.GPRSAVE + 8 * 4], r15
%ifdef WINABI
mov [rsp + frame.GPRSAVE + 8 * 5], rsi
mov [rsp + frame.GPRSAVE + 8 * 6], rdi
%endif
; Save XMMs
%ifdef WINABI
vmovdqa [rsp + frame.XMMSAVE + 16 * 0], xmm6
vmovdqa [rsp + frame.XMMSAVE + 16 * 1], xmm7
vmovdqa [rsp + frame.XMMSAVE + 16 * 2], xmm8
vmovdqa [rsp + frame.XMMSAVE + 16 * 3], xmm9
%endif
.updateblock:
; Load state variables
mov a_64, [DIGEST(0)]
mov b_64, [DIGEST(1)]
mov c_64, [DIGEST(2)]
mov d_64, [DIGEST(3)]
mov e_64, [DIGEST(4)]
mov f_64, [DIGEST(5)]
mov g_64, [DIGEST(6)]
mov h_64, [DIGEST(7)]
%assign t 0
%rep 80/2 + 1
; (80 rounds) / (2 rounds/iteration) + (1 iteration)
; +1 iteration because the scheduler leads hashing by 1 iteration
%if t < 2
; BSWAP 2 QWORDS
vmovdqa xmm1, [XMM_QWORD_BSWAP wrt rip]
vmovdqu xmm0, [MSG(t)]
vpshufb xmm0, xmm0, xmm1 ; BSWAP
vmovdqa [W_t(t)], xmm0 ; Store Scheduled Pair
vpaddq xmm0, xmm0, [K_t(t)] ; Compute W[t]+K[t]
vmovdqa [WK_2(t)], xmm0 ; Store into WK for rounds
%elif t < 16
; BSWAP 2 QWORDS, Compute 2 Rounds
vmovdqu xmm0, [MSG(t)]
vpshufb xmm0, xmm0, xmm1 ; BSWAP
SHA512_Round t - 2 ; Round t-2
vmovdqa [W_t(t)], xmm0 ; Store Scheduled Pair
vpaddq xmm0, xmm0, [K_t(t)] ; Compute W[t]+K[t]
SHA512_Round t - 1 ; Round t-1
vmovdqa [WK_2(t)], xmm0 ; W[t]+K[t] into WK
%elif t < 79
; Schedule 2 QWORDS; Compute 2 Rounds
SHA512_2Sched_2Round_avx t
%else
; Compute 2 Rounds
SHA512_Round t - 2
SHA512_Round t - 1
%endif
%assign t t+2
%endrep
; Update digest
add [DIGEST(0)], a_64
add [DIGEST(1)], b_64
add [DIGEST(2)], c_64
add [DIGEST(3)], d_64
add [DIGEST(4)], e_64
add [DIGEST(5)], f_64
add [DIGEST(6)], g_64
add [DIGEST(7)], h_64
; Advance to next message block
add msg, 16*8
dec msglen
jnz .updateblock
; Restore XMMs
%ifdef WINABI
vmovdqa xmm6, [rsp + frame.XMMSAVE + 16 * 0]
vmovdqa xmm7, [rsp + frame.XMMSAVE + 16 * 1]
vmovdqa xmm8, [rsp + frame.XMMSAVE + 16 * 2]
vmovdqa xmm9, [rsp + frame.XMMSAVE + 16 * 3]
%endif
; Restore GPRs
mov rbx, [rsp + frame.GPRSAVE + 8 * 0]
mov r12, [rsp + frame.GPRSAVE + 8 * 1]
mov r13, [rsp + frame.GPRSAVE + 8 * 2]
mov r14, [rsp + frame.GPRSAVE + 8 * 3]
mov r15, [rsp + frame.GPRSAVE + 8 * 4]
%ifdef WINABI
mov rsi, [rsp + frame.GPRSAVE + 8 * 5]
mov rdi, [rsp + frame.GPRSAVE + 8 * 6]
%endif
; Restore Stack Pointer
add rsp, frame_size
.nowork:
ret
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; Binary Data
section .data
ALIGN 16
; Mask for byte-swapping a couple of qwords in an XMM register using (v)pshufb.
XMM_QWORD_BSWAP:
ddq 0x08090a0b0c0d0e0f0001020304050607
; K[t] used in SHA512 hashing
K512:
dq 0x428a2f98d728ae22,0x7137449123ef65cd
dq 0xb5c0fbcfec4d3b2f,0xe9b5dba58189dbbc
dq 0x3956c25bf348b538,0x59f111f1b605d019
dq 0x923f82a4af194f9b,0xab1c5ed5da6d8118
dq 0xd807aa98a3030242,0x12835b0145706fbe
dq 0x243185be4ee4b28c,0x550c7dc3d5ffb4e2
dq 0x72be5d74f27b896f,0x80deb1fe3b1696b1
dq 0x9bdc06a725c71235,0xc19bf174cf692694
dq 0xe49b69c19ef14ad2,0xefbe4786384f25e3
dq 0x0fc19dc68b8cd5b5,0x240ca1cc77ac9c65
dq 0x2de92c6f592b0275,0x4a7484aa6ea6e483
dq 0x5cb0a9dcbd41fbd4,0x76f988da831153b5
dq 0x983e5152ee66dfab,0xa831c66d2db43210
dq 0xb00327c898fb213f,0xbf597fc7beef0ee4
dq 0xc6e00bf33da88fc2,0xd5a79147930aa725
dq 0x06ca6351e003826f,0x142929670a0e6e70
dq 0x27b70a8546d22ffc,0x2e1b21385c26c926
dq 0x4d2c6dfc5ac42aed,0x53380d139d95b3df
dq 0x650a73548baf63de,0x766a0abb3c77b2a8
dq 0x81c2c92e47edaee6,0x92722c851482353b
dq 0xa2bfe8a14cf10364,0xa81a664bbc423001
dq 0xc24b8b70d0f89791,0xc76c51a30654be30
dq 0xd192e819d6ef5218,0xd69906245565a910
dq 0xf40e35855771202a,0x106aa07032bbd1b8
dq 0x19a4c116b8d2d0c8,0x1e376c085141ab53
dq 0x2748774cdf8eeb99,0x34b0bcb5e19b48a8
dq 0x391c0cb3c5c95a63,0x4ed8aa4ae3418acb
dq 0x5b9cca4f7763e373,0x682e6ff3d6b2b8a3
dq 0x748f82ee5defb2fc,0x78a5636f43172f60
dq 0x84c87814a1f0ab72,0x8cc702081a6439ec
dq 0x90befffa23631e28,0xa4506cebde82bde9
dq 0xbef9a3f7b2c67915,0xc67178f2e372532b
dq 0xca273eceea26619c,0xd186b8c721c0c207
dq 0xeada7dd6cde0eb1e,0xf57d4f7fee6ed178
dq 0x06f067aa72176fba,0x0a637dc5a2c898a6
dq 0x113f9804bef90dae,0x1b710b35131c471b
dq 0x28db77f523047d84,0x32caab7b40c72493
dq 0x3c9ebe0a15c9bebc,0x431d67c49c100d4c
dq 0x4cc5d4becb3e42b6,0x597f299cfc657e2a
dq 0x5fcb6fab3ad6faec,0x6c44198c4a475817
%ifidn __OUTPUT_FORMAT__,elf
section .note.GNU-stack noalloc noexec nowrite progbits
%endif
%ifidn __OUTPUT_FORMAT__,elf32
section .note.GNU-stack noalloc noexec nowrite progbits
%endif
%ifidn __OUTPUT_FORMAT__,elf64
section .note.GNU-stack noalloc noexec nowrite progbits
%endif