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-rw-r--r--src/crypto/md5/md5block_arm.s299
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diff --git a/src/crypto/md5/md5block_arm.s b/src/crypto/md5/md5block_arm.s
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+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+//
+// ARM version of md5block.go
+
+#include "textflag.h"
+
+// Register definitions
+#define Rtable R0 // Pointer to MD5 constants table
+#define Rdata R1 // Pointer to data to hash
+#define Ra R2 // MD5 accumulator
+#define Rb R3 // MD5 accumulator
+#define Rc R4 // MD5 accumulator
+#define Rd R5 // MD5 accumulator
+#define Rc0 R6 // MD5 constant
+#define Rc1 R7 // MD5 constant
+#define Rc2 R8 // MD5 constant
+// r9, r10 are forbidden
+// r11 is OK provided you check the assembler that no synthetic instructions use it
+#define Rc3 R11 // MD5 constant
+#define Rt0 R12 // temporary
+#define Rt1 R14 // temporary
+
+// func block(dig *digest, p []byte)
+// 0(FP) is *digest
+// 4(FP) is p.array (struct Slice)
+// 8(FP) is p.len
+//12(FP) is p.cap
+//
+// Stack frame
+#define p_end end-4(SP) // pointer to the end of data
+#define p_data data-8(SP) // current data pointer
+#define buf buffer-(8+4*16)(SP) //16 words temporary buffer
+ // 3 words at 4..12(R13) for called routine parameters
+
+TEXT ·block(SB), NOSPLIT, $84-16
+ MOVW p+4(FP), Rdata // pointer to the data
+ MOVW p_len+8(FP), Rt0 // number of bytes
+ ADD Rdata, Rt0
+ MOVW Rt0, p_end // pointer to end of data
+
+loop:
+ MOVW Rdata, p_data // Save Rdata
+ AND.S $3, Rdata, Rt0 // TST $3, Rdata not working see issue 5921
+ BEQ aligned // aligned detected - skip copy
+
+ // Copy the unaligned source data into the aligned temporary buffer
+ // memmove(to=4(R13), from=8(R13), n=12(R13)) - Corrupts all registers
+ MOVW $buf, Rtable // to
+ MOVW $64, Rc0 // n
+ MOVM.IB [Rtable,Rdata,Rc0], (R13)
+ BL runtime·memmove(SB)
+
+ // Point to the local aligned copy of the data
+ MOVW $buf, Rdata
+
+aligned:
+ // Point to the table of constants
+ // A PC relative add would be cheaper than this
+ MOVW $·table(SB), Rtable
+
+ // Load up initial MD5 accumulator
+ MOVW dig+0(FP), Rc0
+ MOVM.IA (Rc0), [Ra,Rb,Rc,Rd]
+
+// a += (((c^d)&b)^d) + X[index] + const
+// a = a<<shift | a>>(32-shift) + b
+#define ROUND1(Ra, Rb, Rc, Rd, index, shift, Rconst) \
+ EOR Rc, Rd, Rt0 ; \
+ AND Rb, Rt0 ; \
+ EOR Rd, Rt0 ; \
+ MOVW (index<<2)(Rdata), Rt1 ; \
+ ADD Rt1, Rt0 ; \
+ ADD Rconst, Rt0 ; \
+ ADD Rt0, Ra ; \
+ ADD Ra@>(32-shift), Rb, Ra ;
+
+ MOVM.IA.W (Rtable), [Rc0,Rc1,Rc2,Rc3]
+ ROUND1(Ra, Rb, Rc, Rd, 0, 7, Rc0)
+ ROUND1(Rd, Ra, Rb, Rc, 1, 12, Rc1)
+ ROUND1(Rc, Rd, Ra, Rb, 2, 17, Rc2)
+ ROUND1(Rb, Rc, Rd, Ra, 3, 22, Rc3)
+
+ MOVM.IA.W (Rtable), [Rc0,Rc1,Rc2,Rc3]
+ ROUND1(Ra, Rb, Rc, Rd, 4, 7, Rc0)
+ ROUND1(Rd, Ra, Rb, Rc, 5, 12, Rc1)
+ ROUND1(Rc, Rd, Ra, Rb, 6, 17, Rc2)
+ ROUND1(Rb, Rc, Rd, Ra, 7, 22, Rc3)
+
+ MOVM.IA.W (Rtable), [Rc0,Rc1,Rc2,Rc3]
+ ROUND1(Ra, Rb, Rc, Rd, 8, 7, Rc0)
+ ROUND1(Rd, Ra, Rb, Rc, 9, 12, Rc1)
+ ROUND1(Rc, Rd, Ra, Rb, 10, 17, Rc2)
+ ROUND1(Rb, Rc, Rd, Ra, 11, 22, Rc3)
+
+ MOVM.IA.W (Rtable), [Rc0,Rc1,Rc2,Rc3]
+ ROUND1(Ra, Rb, Rc, Rd, 12, 7, Rc0)
+ ROUND1(Rd, Ra, Rb, Rc, 13, 12, Rc1)
+ ROUND1(Rc, Rd, Ra, Rb, 14, 17, Rc2)
+ ROUND1(Rb, Rc, Rd, Ra, 15, 22, Rc3)
+
+// a += (((b^c)&d)^c) + X[index] + const
+// a = a<<shift | a>>(32-shift) + b
+#define ROUND2(Ra, Rb, Rc, Rd, index, shift, Rconst) \
+ EOR Rb, Rc, Rt0 ; \
+ AND Rd, Rt0 ; \
+ EOR Rc, Rt0 ; \
+ MOVW (index<<2)(Rdata), Rt1 ; \
+ ADD Rt1, Rt0 ; \
+ ADD Rconst, Rt0 ; \
+ ADD Rt0, Ra ; \
+ ADD Ra@>(32-shift), Rb, Ra ;
+
+ MOVM.IA.W (Rtable), [Rc0,Rc1,Rc2,Rc3]
+ ROUND2(Ra, Rb, Rc, Rd, 1, 5, Rc0)
+ ROUND2(Rd, Ra, Rb, Rc, 6, 9, Rc1)
+ ROUND2(Rc, Rd, Ra, Rb, 11, 14, Rc2)
+ ROUND2(Rb, Rc, Rd, Ra, 0, 20, Rc3)
+
+ MOVM.IA.W (Rtable), [Rc0,Rc1,Rc2,Rc3]
+ ROUND2(Ra, Rb, Rc, Rd, 5, 5, Rc0)
+ ROUND2(Rd, Ra, Rb, Rc, 10, 9, Rc1)
+ ROUND2(Rc, Rd, Ra, Rb, 15, 14, Rc2)
+ ROUND2(Rb, Rc, Rd, Ra, 4, 20, Rc3)
+
+ MOVM.IA.W (Rtable), [Rc0,Rc1,Rc2,Rc3]
+ ROUND2(Ra, Rb, Rc, Rd, 9, 5, Rc0)
+ ROUND2(Rd, Ra, Rb, Rc, 14, 9, Rc1)
+ ROUND2(Rc, Rd, Ra, Rb, 3, 14, Rc2)
+ ROUND2(Rb, Rc, Rd, Ra, 8, 20, Rc3)
+
+ MOVM.IA.W (Rtable), [Rc0,Rc1,Rc2,Rc3]
+ ROUND2(Ra, Rb, Rc, Rd, 13, 5, Rc0)
+ ROUND2(Rd, Ra, Rb, Rc, 2, 9, Rc1)
+ ROUND2(Rc, Rd, Ra, Rb, 7, 14, Rc2)
+ ROUND2(Rb, Rc, Rd, Ra, 12, 20, Rc3)
+
+// a += (b^c^d) + X[index] + const
+// a = a<<shift | a>>(32-shift) + b
+#define ROUND3(Ra, Rb, Rc, Rd, index, shift, Rconst) \
+ EOR Rb, Rc, Rt0 ; \
+ EOR Rd, Rt0 ; \
+ MOVW (index<<2)(Rdata), Rt1 ; \
+ ADD Rt1, Rt0 ; \
+ ADD Rconst, Rt0 ; \
+ ADD Rt0, Ra ; \
+ ADD Ra@>(32-shift), Rb, Ra ;
+
+ MOVM.IA.W (Rtable), [Rc0,Rc1,Rc2,Rc3]
+ ROUND3(Ra, Rb, Rc, Rd, 5, 4, Rc0)
+ ROUND3(Rd, Ra, Rb, Rc, 8, 11, Rc1)
+ ROUND3(Rc, Rd, Ra, Rb, 11, 16, Rc2)
+ ROUND3(Rb, Rc, Rd, Ra, 14, 23, Rc3)
+
+ MOVM.IA.W (Rtable), [Rc0,Rc1,Rc2,Rc3]
+ ROUND3(Ra, Rb, Rc, Rd, 1, 4, Rc0)
+ ROUND3(Rd, Ra, Rb, Rc, 4, 11, Rc1)
+ ROUND3(Rc, Rd, Ra, Rb, 7, 16, Rc2)
+ ROUND3(Rb, Rc, Rd, Ra, 10, 23, Rc3)
+
+ MOVM.IA.W (Rtable), [Rc0,Rc1,Rc2,Rc3]
+ ROUND3(Ra, Rb, Rc, Rd, 13, 4, Rc0)
+ ROUND3(Rd, Ra, Rb, Rc, 0, 11, Rc1)
+ ROUND3(Rc, Rd, Ra, Rb, 3, 16, Rc2)
+ ROUND3(Rb, Rc, Rd, Ra, 6, 23, Rc3)
+
+ MOVM.IA.W (Rtable), [Rc0,Rc1,Rc2,Rc3]
+ ROUND3(Ra, Rb, Rc, Rd, 9, 4, Rc0)
+ ROUND3(Rd, Ra, Rb, Rc, 12, 11, Rc1)
+ ROUND3(Rc, Rd, Ra, Rb, 15, 16, Rc2)
+ ROUND3(Rb, Rc, Rd, Ra, 2, 23, Rc3)
+
+// a += (c^(b|^d)) + X[index] + const
+// a = a<<shift | a>>(32-shift) + b
+#define ROUND4(Ra, Rb, Rc, Rd, index, shift, Rconst) \
+ MVN Rd, Rt0 ; \
+ ORR Rb, Rt0 ; \
+ EOR Rc, Rt0 ; \
+ MOVW (index<<2)(Rdata), Rt1 ; \
+ ADD Rt1, Rt0 ; \
+ ADD Rconst, Rt0 ; \
+ ADD Rt0, Ra ; \
+ ADD Ra@>(32-shift), Rb, Ra ;
+
+ MOVM.IA.W (Rtable), [Rc0,Rc1,Rc2,Rc3]
+ ROUND4(Ra, Rb, Rc, Rd, 0, 6, Rc0)
+ ROUND4(Rd, Ra, Rb, Rc, 7, 10, Rc1)
+ ROUND4(Rc, Rd, Ra, Rb, 14, 15, Rc2)
+ ROUND4(Rb, Rc, Rd, Ra, 5, 21, Rc3)
+
+ MOVM.IA.W (Rtable), [Rc0,Rc1,Rc2,Rc3]
+ ROUND4(Ra, Rb, Rc, Rd, 12, 6, Rc0)
+ ROUND4(Rd, Ra, Rb, Rc, 3, 10, Rc1)
+ ROUND4(Rc, Rd, Ra, Rb, 10, 15, Rc2)
+ ROUND4(Rb, Rc, Rd, Ra, 1, 21, Rc3)
+
+ MOVM.IA.W (Rtable), [Rc0,Rc1,Rc2,Rc3]
+ ROUND4(Ra, Rb, Rc, Rd, 8, 6, Rc0)
+ ROUND4(Rd, Ra, Rb, Rc, 15, 10, Rc1)
+ ROUND4(Rc, Rd, Ra, Rb, 6, 15, Rc2)
+ ROUND4(Rb, Rc, Rd, Ra, 13, 21, Rc3)
+
+ MOVM.IA.W (Rtable), [Rc0,Rc1,Rc2,Rc3]
+ ROUND4(Ra, Rb, Rc, Rd, 4, 6, Rc0)
+ ROUND4(Rd, Ra, Rb, Rc, 11, 10, Rc1)
+ ROUND4(Rc, Rd, Ra, Rb, 2, 15, Rc2)
+ ROUND4(Rb, Rc, Rd, Ra, 9, 21, Rc3)
+
+ MOVW dig+0(FP), Rt0
+ MOVM.IA (Rt0), [Rc0,Rc1,Rc2,Rc3]
+
+ ADD Rc0, Ra
+ ADD Rc1, Rb
+ ADD Rc2, Rc
+ ADD Rc3, Rd
+
+ MOVM.IA [Ra,Rb,Rc,Rd], (Rt0)
+
+ MOVW p_data, Rdata
+ MOVW p_end, Rt0
+ ADD $64, Rdata
+ CMP Rt0, Rdata
+ BLO loop
+
+ RET
+
+// MD5 constants table
+
+ // Round 1
+ DATA ·table+0x00(SB)/4, $0xd76aa478
+ DATA ·table+0x04(SB)/4, $0xe8c7b756
+ DATA ·table+0x08(SB)/4, $0x242070db
+ DATA ·table+0x0c(SB)/4, $0xc1bdceee
+ DATA ·table+0x10(SB)/4, $0xf57c0faf
+ DATA ·table+0x14(SB)/4, $0x4787c62a
+ DATA ·table+0x18(SB)/4, $0xa8304613
+ DATA ·table+0x1c(SB)/4, $0xfd469501
+ DATA ·table+0x20(SB)/4, $0x698098d8
+ DATA ·table+0x24(SB)/4, $0x8b44f7af
+ DATA ·table+0x28(SB)/4, $0xffff5bb1
+ DATA ·table+0x2c(SB)/4, $0x895cd7be
+ DATA ·table+0x30(SB)/4, $0x6b901122
+ DATA ·table+0x34(SB)/4, $0xfd987193
+ DATA ·table+0x38(SB)/4, $0xa679438e
+ DATA ·table+0x3c(SB)/4, $0x49b40821
+ // Round 2
+ DATA ·table+0x40(SB)/4, $0xf61e2562
+ DATA ·table+0x44(SB)/4, $0xc040b340
+ DATA ·table+0x48(SB)/4, $0x265e5a51
+ DATA ·table+0x4c(SB)/4, $0xe9b6c7aa
+ DATA ·table+0x50(SB)/4, $0xd62f105d
+ DATA ·table+0x54(SB)/4, $0x02441453
+ DATA ·table+0x58(SB)/4, $0xd8a1e681
+ DATA ·table+0x5c(SB)/4, $0xe7d3fbc8
+ DATA ·table+0x60(SB)/4, $0x21e1cde6
+ DATA ·table+0x64(SB)/4, $0xc33707d6
+ DATA ·table+0x68(SB)/4, $0xf4d50d87
+ DATA ·table+0x6c(SB)/4, $0x455a14ed
+ DATA ·table+0x70(SB)/4, $0xa9e3e905
+ DATA ·table+0x74(SB)/4, $0xfcefa3f8
+ DATA ·table+0x78(SB)/4, $0x676f02d9
+ DATA ·table+0x7c(SB)/4, $0x8d2a4c8a
+ // Round 3
+ DATA ·table+0x80(SB)/4, $0xfffa3942
+ DATA ·table+0x84(SB)/4, $0x8771f681
+ DATA ·table+0x88(SB)/4, $0x6d9d6122
+ DATA ·table+0x8c(SB)/4, $0xfde5380c
+ DATA ·table+0x90(SB)/4, $0xa4beea44
+ DATA ·table+0x94(SB)/4, $0x4bdecfa9
+ DATA ·table+0x98(SB)/4, $0xf6bb4b60
+ DATA ·table+0x9c(SB)/4, $0xbebfbc70
+ DATA ·table+0xa0(SB)/4, $0x289b7ec6
+ DATA ·table+0xa4(SB)/4, $0xeaa127fa
+ DATA ·table+0xa8(SB)/4, $0xd4ef3085
+ DATA ·table+0xac(SB)/4, $0x04881d05
+ DATA ·table+0xb0(SB)/4, $0xd9d4d039
+ DATA ·table+0xb4(SB)/4, $0xe6db99e5
+ DATA ·table+0xb8(SB)/4, $0x1fa27cf8
+ DATA ·table+0xbc(SB)/4, $0xc4ac5665
+ // Round 4
+ DATA ·table+0xc0(SB)/4, $0xf4292244
+ DATA ·table+0xc4(SB)/4, $0x432aff97
+ DATA ·table+0xc8(SB)/4, $0xab9423a7
+ DATA ·table+0xcc(SB)/4, $0xfc93a039
+ DATA ·table+0xd0(SB)/4, $0x655b59c3
+ DATA ·table+0xd4(SB)/4, $0x8f0ccc92
+ DATA ·table+0xd8(SB)/4, $0xffeff47d
+ DATA ·table+0xdc(SB)/4, $0x85845dd1
+ DATA ·table+0xe0(SB)/4, $0x6fa87e4f
+ DATA ·table+0xe4(SB)/4, $0xfe2ce6e0
+ DATA ·table+0xe8(SB)/4, $0xa3014314
+ DATA ·table+0xec(SB)/4, $0x4e0811a1
+ DATA ·table+0xf0(SB)/4, $0xf7537e82
+ DATA ·table+0xf4(SB)/4, $0xbd3af235
+ DATA ·table+0xf8(SB)/4, $0x2ad7d2bb
+ DATA ·table+0xfc(SB)/4, $0xeb86d391
+ // Global definition
+ GLOBL ·table(SB),8,$256
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-23 08:40:06 +0000