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-rw-r--r--linux-arm/crypto/modes/ghash-armv4.S532
1 files changed, 532 insertions, 0 deletions
diff --git a/linux-arm/crypto/modes/ghash-armv4.S b/linux-arm/crypto/modes/ghash-armv4.S
new file mode 100644
index 0000000..8c81975
--- /dev/null
+++ b/linux-arm/crypto/modes/ghash-armv4.S
@@ -0,0 +1,532 @@
+#if defined(__arm__)
+#include "arm_arch.h"
+
+.syntax unified
+
+.text
+.code 32
+
+.type rem_4bit,%object
+.align 5
+rem_4bit:
+.short 0x0000,0x1C20,0x3840,0x2460
+.short 0x7080,0x6CA0,0x48C0,0x54E0
+.short 0xE100,0xFD20,0xD940,0xC560
+.short 0x9180,0x8DA0,0xA9C0,0xB5E0
+.size rem_4bit,.-rem_4bit
+
+.type rem_4bit_get,%function
+rem_4bit_get:
+ sub r2,pc,#8
+ sub r2,r2,#32 @ &rem_4bit
+ b .Lrem_4bit_got
+ nop
+.size rem_4bit_get,.-rem_4bit_get
+
+.global gcm_ghash_4bit
+.hidden gcm_ghash_4bit
+.type gcm_ghash_4bit,%function
+gcm_ghash_4bit:
+ sub r12,pc,#8
+ add r3,r2,r3 @ r3 to point at the end
+ stmdb sp!,{r3-r11,lr} @ save r3/end too
+ sub r12,r12,#48 @ &rem_4bit
+
+ ldmia r12,{r4-r11} @ copy rem_4bit ...
+ stmdb sp!,{r4-r11} @ ... to stack
+
+ ldrb r12,[r2,#15]
+ ldrb r14,[r0,#15]
+.Louter:
+ eor r12,r12,r14
+ and r14,r12,#0xf0
+ and r12,r12,#0x0f
+ mov r3,#14
+
+ add r7,r1,r12,lsl#4
+ ldmia r7,{r4-r7} @ load Htbl[nlo]
+ add r11,r1,r14
+ ldrb r12,[r2,#14]
+
+ and r14,r4,#0xf @ rem
+ ldmia r11,{r8-r11} @ load Htbl[nhi]
+ add r14,r14,r14
+ eor r4,r8,r4,lsr#4
+ ldrh r8,[sp,r14] @ rem_4bit[rem]
+ eor r4,r4,r5,lsl#28
+ ldrb r14,[r0,#14]
+ eor r5,r9,r5,lsr#4
+ eor r5,r5,r6,lsl#28
+ eor r6,r10,r6,lsr#4
+ eor r6,r6,r7,lsl#28
+ eor r7,r11,r7,lsr#4
+ eor r12,r12,r14
+ and r14,r12,#0xf0
+ and r12,r12,#0x0f
+ eor r7,r7,r8,lsl#16
+
+.Linner:
+ add r11,r1,r12,lsl#4
+ and r12,r4,#0xf @ rem
+ subs r3,r3,#1
+ add r12,r12,r12
+ ldmia r11,{r8-r11} @ load Htbl[nlo]
+ eor r4,r8,r4,lsr#4
+ eor r4,r4,r5,lsl#28
+ eor r5,r9,r5,lsr#4
+ eor r5,r5,r6,lsl#28
+ ldrh r8,[sp,r12] @ rem_4bit[rem]
+ eor r6,r10,r6,lsr#4
+ ldrbpl r12,[r2,r3]
+ eor r6,r6,r7,lsl#28
+ eor r7,r11,r7,lsr#4
+
+ add r11,r1,r14
+ and r14,r4,#0xf @ rem
+ eor r7,r7,r8,lsl#16 @ ^= rem_4bit[rem]
+ add r14,r14,r14
+ ldmia r11,{r8-r11} @ load Htbl[nhi]
+ eor r4,r8,r4,lsr#4
+ ldrbpl r8,[r0,r3]
+ eor r4,r4,r5,lsl#28
+ eor r5,r9,r5,lsr#4
+ ldrh r9,[sp,r14]
+ eor r5,r5,r6,lsl#28
+ eor r6,r10,r6,lsr#4
+ eor r6,r6,r7,lsl#28
+ eorpl r12,r12,r8
+ eor r7,r11,r7,lsr#4
+ andpl r14,r12,#0xf0
+ andpl r12,r12,#0x0f
+ eor r7,r7,r9,lsl#16 @ ^= rem_4bit[rem]
+ bpl .Linner
+
+ ldr r3,[sp,#32] @ re-load r3/end
+ add r2,r2,#16
+ mov r14,r4
+#if __ARM_ARCH__>=7 && defined(__ARMEL__)
+ rev r4,r4
+ str r4,[r0,#12]
+#elif defined(__ARMEB__)
+ str r4,[r0,#12]
+#else
+ mov r9,r4,lsr#8
+ strb r4,[r0,#12+3]
+ mov r10,r4,lsr#16
+ strb r9,[r0,#12+2]
+ mov r11,r4,lsr#24
+ strb r10,[r0,#12+1]
+ strb r11,[r0,#12]
+#endif
+ cmp r2,r3
+#if __ARM_ARCH__>=7 && defined(__ARMEL__)
+ rev r5,r5
+ str r5,[r0,#8]
+#elif defined(__ARMEB__)
+ str r5,[r0,#8]
+#else
+ mov r9,r5,lsr#8
+ strb r5,[r0,#8+3]
+ mov r10,r5,lsr#16
+ strb r9,[r0,#8+2]
+ mov r11,r5,lsr#24
+ strb r10,[r0,#8+1]
+ strb r11,[r0,#8]
+#endif
+ ldrbne r12,[r2,#15]
+#if __ARM_ARCH__>=7 && defined(__ARMEL__)
+ rev r6,r6
+ str r6,[r0,#4]
+#elif defined(__ARMEB__)
+ str r6,[r0,#4]
+#else
+ mov r9,r6,lsr#8
+ strb r6,[r0,#4+3]
+ mov r10,r6,lsr#16
+ strb r9,[r0,#4+2]
+ mov r11,r6,lsr#24
+ strb r10,[r0,#4+1]
+ strb r11,[r0,#4]
+#endif
+
+#if __ARM_ARCH__>=7 && defined(__ARMEL__)
+ rev r7,r7
+ str r7,[r0,#0]
+#elif defined(__ARMEB__)
+ str r7,[r0,#0]
+#else
+ mov r9,r7,lsr#8
+ strb r7,[r0,#0+3]
+ mov r10,r7,lsr#16
+ strb r9,[r0,#0+2]
+ mov r11,r7,lsr#24
+ strb r10,[r0,#0+1]
+ strb r11,[r0,#0]
+#endif
+
+ bne .Louter
+
+ add sp,sp,#36
+#if __ARM_ARCH__>=5
+ ldmia sp!,{r4-r11,pc}
+#else
+ ldmia sp!,{r4-r11,lr}
+ tst lr,#1
+ moveq pc,lr @ be binary compatible with V4, yet
+ .word 0xe12fff1e @ interoperable with Thumb ISA:-)
+#endif
+.size gcm_ghash_4bit,.-gcm_ghash_4bit
+
+.global gcm_gmult_4bit
+.hidden gcm_gmult_4bit
+.type gcm_gmult_4bit,%function
+gcm_gmult_4bit:
+ stmdb sp!,{r4-r11,lr}
+ ldrb r12,[r0,#15]
+ b rem_4bit_get
+.Lrem_4bit_got:
+ and r14,r12,#0xf0
+ and r12,r12,#0x0f
+ mov r3,#14
+
+ add r7,r1,r12,lsl#4
+ ldmia r7,{r4-r7} @ load Htbl[nlo]
+ ldrb r12,[r0,#14]
+
+ add r11,r1,r14
+ and r14,r4,#0xf @ rem
+ ldmia r11,{r8-r11} @ load Htbl[nhi]
+ add r14,r14,r14
+ eor r4,r8,r4,lsr#4
+ ldrh r8,[r2,r14] @ rem_4bit[rem]
+ eor r4,r4,r5,lsl#28
+ eor r5,r9,r5,lsr#4
+ eor r5,r5,r6,lsl#28
+ eor r6,r10,r6,lsr#4
+ eor r6,r6,r7,lsl#28
+ eor r7,r11,r7,lsr#4
+ and r14,r12,#0xf0
+ eor r7,r7,r8,lsl#16
+ and r12,r12,#0x0f
+
+.Loop:
+ add r11,r1,r12,lsl#4
+ and r12,r4,#0xf @ rem
+ subs r3,r3,#1
+ add r12,r12,r12
+ ldmia r11,{r8-r11} @ load Htbl[nlo]
+ eor r4,r8,r4,lsr#4
+ eor r4,r4,r5,lsl#28
+ eor r5,r9,r5,lsr#4
+ eor r5,r5,r6,lsl#28
+ ldrh r8,[r2,r12] @ rem_4bit[rem]
+ eor r6,r10,r6,lsr#4
+ ldrbpl r12,[r0,r3]
+ eor r6,r6,r7,lsl#28
+ eor r7,r11,r7,lsr#4
+
+ add r11,r1,r14
+ and r14,r4,#0xf @ rem
+ eor r7,r7,r8,lsl#16 @ ^= rem_4bit[rem]
+ add r14,r14,r14
+ ldmia r11,{r8-r11} @ load Htbl[nhi]
+ eor r4,r8,r4,lsr#4
+ eor r4,r4,r5,lsl#28
+ eor r5,r9,r5,lsr#4
+ ldrh r8,[r2,r14] @ rem_4bit[rem]
+ eor r5,r5,r6,lsl#28
+ eor r6,r10,r6,lsr#4
+ eor r6,r6,r7,lsl#28
+ eor r7,r11,r7,lsr#4
+ andpl r14,r12,#0xf0
+ andpl r12,r12,#0x0f
+ eor r7,r7,r8,lsl#16 @ ^= rem_4bit[rem]
+ bpl .Loop
+#if __ARM_ARCH__>=7 && defined(__ARMEL__)
+ rev r4,r4
+ str r4,[r0,#12]
+#elif defined(__ARMEB__)
+ str r4,[r0,#12]
+#else
+ mov r9,r4,lsr#8
+ strb r4,[r0,#12+3]
+ mov r10,r4,lsr#16
+ strb r9,[r0,#12+2]
+ mov r11,r4,lsr#24
+ strb r10,[r0,#12+1]
+ strb r11,[r0,#12]
+#endif
+
+#if __ARM_ARCH__>=7 && defined(__ARMEL__)
+ rev r5,r5
+ str r5,[r0,#8]
+#elif defined(__ARMEB__)
+ str r5,[r0,#8]
+#else
+ mov r9,r5,lsr#8
+ strb r5,[r0,#8+3]
+ mov r10,r5,lsr#16
+ strb r9,[r0,#8+2]
+ mov r11,r5,lsr#24
+ strb r10,[r0,#8+1]
+ strb r11,[r0,#8]
+#endif
+
+#if __ARM_ARCH__>=7 && defined(__ARMEL__)
+ rev r6,r6
+ str r6,[r0,#4]
+#elif defined(__ARMEB__)
+ str r6,[r0,#4]
+#else
+ mov r9,r6,lsr#8
+ strb r6,[r0,#4+3]
+ mov r10,r6,lsr#16
+ strb r9,[r0,#4+2]
+ mov r11,r6,lsr#24
+ strb r10,[r0,#4+1]
+ strb r11,[r0,#4]
+#endif
+
+#if __ARM_ARCH__>=7 && defined(__ARMEL__)
+ rev r7,r7
+ str r7,[r0,#0]
+#elif defined(__ARMEB__)
+ str r7,[r0,#0]
+#else
+ mov r9,r7,lsr#8
+ strb r7,[r0,#0+3]
+ mov r10,r7,lsr#16
+ strb r9,[r0,#0+2]
+ mov r11,r7,lsr#24
+ strb r10,[r0,#0+1]
+ strb r11,[r0,#0]
+#endif
+
+#if __ARM_ARCH__>=5
+ ldmia sp!,{r4-r11,pc}
+#else
+ ldmia sp!,{r4-r11,lr}
+ tst lr,#1
+ moveq pc,lr @ be binary compatible with V4, yet
+ .word 0xe12fff1e @ interoperable with Thumb ISA:-)
+#endif
+.size gcm_gmult_4bit,.-gcm_gmult_4bit
+#if __ARM_ARCH__>=7
+.fpu neon
+
+.global gcm_init_neon
+.hidden gcm_init_neon
+.type gcm_init_neon,%function
+.align 4
+gcm_init_neon:
+ vld1.64 d7,[r1,:64]! @ load H
+ vmov.i8 q8,#0xe1
+ vld1.64 d6,[r1,:64]
+ vshl.i64 d17,#57
+ vshr.u64 d16,#63 @ t0=0xc2....01
+ vdup.8 q9,d7[7]
+ vshr.u64 d26,d6,#63
+ vshr.s8 q9,#7 @ broadcast carry bit
+ vshl.i64 q3,q3,#1
+ vand q8,q8,q9
+ vorr d7,d26 @ H<<<=1
+ veor q3,q3,q8 @ twisted H
+ vstmia r0,{q3}
+
+ .word 0xe12fff1e
+.size gcm_init_neon,.-gcm_init_neon
+
+.global gcm_gmult_neon
+.hidden gcm_gmult_neon
+.type gcm_gmult_neon,%function
+.align 4
+gcm_gmult_neon:
+ vld1.64 d7,[r0,:64]! @ load Xi
+ vld1.64 d6,[r0,:64]!
+ vmov.i64 d29,#0x0000ffffffffffff
+ vldmia r1,{d26-d27} @ load twisted H
+ vmov.i64 d30,#0x00000000ffffffff
+#ifdef __ARMEL__
+ vrev64.8 q3,q3
+#endif
+ vmov.i64 d31,#0x000000000000ffff
+ veor d28,d26,d27 @ Karatsuba pre-processing
+ mov r3,#16
+ b .Lgmult_neon
+.size gcm_gmult_neon,.-gcm_gmult_neon
+
+.global gcm_ghash_neon
+.hidden gcm_ghash_neon
+.type gcm_ghash_neon,%function
+.align 4
+gcm_ghash_neon:
+ vld1.64 d1,[r0,:64]! @ load Xi
+ vld1.64 d0,[r0,:64]!
+ vmov.i64 d29,#0x0000ffffffffffff
+ vldmia r1,{d26-d27} @ load twisted H
+ vmov.i64 d30,#0x00000000ffffffff
+#ifdef __ARMEL__
+ vrev64.8 q0,q0
+#endif
+ vmov.i64 d31,#0x000000000000ffff
+ veor d28,d26,d27 @ Karatsuba pre-processing
+
+.Loop_neon:
+ vld1.64 d7,[r2]! @ load inp
+ vld1.64 d6,[r2]!
+#ifdef __ARMEL__
+ vrev64.8 q3,q3
+#endif
+ veor q3,q0 @ inp^=Xi
+.Lgmult_neon:
+ vext.8 d16, d26, d26, #1 @ A1
+ vmull.p8 q8, d16, d6 @ F = A1*B
+ vext.8 d0, d6, d6, #1 @ B1
+ vmull.p8 q0, d26, d0 @ E = A*B1
+ vext.8 d18, d26, d26, #2 @ A2
+ vmull.p8 q9, d18, d6 @ H = A2*B
+ vext.8 d22, d6, d6, #2 @ B2
+ vmull.p8 q11, d26, d22 @ G = A*B2
+ vext.8 d20, d26, d26, #3 @ A3
+ veor q8, q8, q0 @ L = E + F
+ vmull.p8 q10, d20, d6 @ J = A3*B
+ vext.8 d0, d6, d6, #3 @ B3
+ veor q9, q9, q11 @ M = G + H
+ vmull.p8 q0, d26, d0 @ I = A*B3
+ veor d16, d16, d17 @ t0 = (L) (P0 + P1) << 8
+ vand d17, d17, d29
+ vext.8 d22, d6, d6, #4 @ B4
+ veor d18, d18, d19 @ t1 = (M) (P2 + P3) << 16
+ vand d19, d19, d30
+ vmull.p8 q11, d26, d22 @ K = A*B4
+ veor q10, q10, q0 @ N = I + J
+ veor d16, d16, d17
+ veor d18, d18, d19
+ veor d20, d20, d21 @ t2 = (N) (P4 + P5) << 24
+ vand d21, d21, d31
+ vext.8 q8, q8, q8, #15
+ veor d22, d22, d23 @ t3 = (K) (P6 + P7) << 32
+ vmov.i64 d23, #0
+ vext.8 q9, q9, q9, #14
+ veor d20, d20, d21
+ vmull.p8 q0, d26, d6 @ D = A*B
+ vext.8 q11, q11, q11, #12
+ vext.8 q10, q10, q10, #13
+ veor q8, q8, q9
+ veor q10, q10, q11
+ veor q0, q0, q8
+ veor q0, q0, q10
+ veor d6,d6,d7 @ Karatsuba pre-processing
+ vext.8 d16, d28, d28, #1 @ A1
+ vmull.p8 q8, d16, d6 @ F = A1*B
+ vext.8 d2, d6, d6, #1 @ B1
+ vmull.p8 q1, d28, d2 @ E = A*B1
+ vext.8 d18, d28, d28, #2 @ A2
+ vmull.p8 q9, d18, d6 @ H = A2*B
+ vext.8 d22, d6, d6, #2 @ B2
+ vmull.p8 q11, d28, d22 @ G = A*B2
+ vext.8 d20, d28, d28, #3 @ A3
+ veor q8, q8, q1 @ L = E + F
+ vmull.p8 q10, d20, d6 @ J = A3*B
+ vext.8 d2, d6, d6, #3 @ B3
+ veor q9, q9, q11 @ M = G + H
+ vmull.p8 q1, d28, d2 @ I = A*B3
+ veor d16, d16, d17 @ t0 = (L) (P0 + P1) << 8
+ vand d17, d17, d29
+ vext.8 d22, d6, d6, #4 @ B4
+ veor d18, d18, d19 @ t1 = (M) (P2 + P3) << 16
+ vand d19, d19, d30
+ vmull.p8 q11, d28, d22 @ K = A*B4
+ veor q10, q10, q1 @ N = I + J
+ veor d16, d16, d17
+ veor d18, d18, d19
+ veor d20, d20, d21 @ t2 = (N) (P4 + P5) << 24
+ vand d21, d21, d31
+ vext.8 q8, q8, q8, #15
+ veor d22, d22, d23 @ t3 = (K) (P6 + P7) << 32
+ vmov.i64 d23, #0
+ vext.8 q9, q9, q9, #14
+ veor d20, d20, d21
+ vmull.p8 q1, d28, d6 @ D = A*B
+ vext.8 q11, q11, q11, #12
+ vext.8 q10, q10, q10, #13
+ veor q8, q8, q9
+ veor q10, q10, q11
+ veor q1, q1, q8
+ veor q1, q1, q10
+ vext.8 d16, d27, d27, #1 @ A1
+ vmull.p8 q8, d16, d7 @ F = A1*B
+ vext.8 d4, d7, d7, #1 @ B1
+ vmull.p8 q2, d27, d4 @ E = A*B1
+ vext.8 d18, d27, d27, #2 @ A2
+ vmull.p8 q9, d18, d7 @ H = A2*B
+ vext.8 d22, d7, d7, #2 @ B2
+ vmull.p8 q11, d27, d22 @ G = A*B2
+ vext.8 d20, d27, d27, #3 @ A3
+ veor q8, q8, q2 @ L = E + F
+ vmull.p8 q10, d20, d7 @ J = A3*B
+ vext.8 d4, d7, d7, #3 @ B3
+ veor q9, q9, q11 @ M = G + H
+ vmull.p8 q2, d27, d4 @ I = A*B3
+ veor d16, d16, d17 @ t0 = (L) (P0 + P1) << 8
+ vand d17, d17, d29
+ vext.8 d22, d7, d7, #4 @ B4
+ veor d18, d18, d19 @ t1 = (M) (P2 + P3) << 16
+ vand d19, d19, d30
+ vmull.p8 q11, d27, d22 @ K = A*B4
+ veor q10, q10, q2 @ N = I + J
+ veor d16, d16, d17
+ veor d18, d18, d19
+ veor d20, d20, d21 @ t2 = (N) (P4 + P5) << 24
+ vand d21, d21, d31
+ vext.8 q8, q8, q8, #15
+ veor d22, d22, d23 @ t3 = (K) (P6 + P7) << 32
+ vmov.i64 d23, #0
+ vext.8 q9, q9, q9, #14
+ veor d20, d20, d21
+ vmull.p8 q2, d27, d7 @ D = A*B
+ vext.8 q11, q11, q11, #12
+ vext.8 q10, q10, q10, #13
+ veor q8, q8, q9
+ veor q10, q10, q11
+ veor q2, q2, q8
+ veor q2, q2, q10
+ veor q1,q1,q0 @ Karatsuba post-processing
+ veor q1,q1,q2
+ veor d1,d1,d2
+ veor d4,d4,d3 @ Xh|Xl - 256-bit result
+
+ @ equivalent of reduction_avx from ghash-x86_64.pl
+ vshl.i64 q9,q0,#57 @ 1st phase
+ vshl.i64 q10,q0,#62
+ veor q10,q10,q9 @
+ vshl.i64 q9,q0,#63
+ veor q10, q10, q9 @
+ veor d1,d1,d20 @
+ veor d4,d4,d21
+
+ vshr.u64 q10,q0,#1 @ 2nd phase
+ veor q2,q2,q0
+ veor q0,q0,q10 @
+ vshr.u64 q10,q10,#6
+ vshr.u64 q0,q0,#1 @
+ veor q0,q0,q2 @
+ veor q0,q0,q10 @
+
+ subs r3,#16
+ bne .Loop_neon
+
+#ifdef __ARMEL__
+ vrev64.8 q0,q0
+#endif
+ sub r0,#16
+ vst1.64 d1,[r0,:64]! @ write out Xi
+ vst1.64 d0,[r0,:64]
+
+ .word 0xe12fff1e
+.size gcm_ghash_neon,.-gcm_ghash_neon
+#endif
+.asciz "GHASH for ARMv4/NEON, CRYPTOGAMS by <appro@openssl.org>"
+.align 2
+
+#endif
generated by cgit v1.1 at 2024-05-19 06:07:24 +0000