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Diffstat (limited to 'main/openssl/crypto/bn/asm/armv4-gf2m.S')
-rw-r--r--main/openssl/crypto/bn/asm/armv4-gf2m.S213
1 files changed, 213 insertions, 0 deletions
diff --git a/main/openssl/crypto/bn/asm/armv4-gf2m.S b/main/openssl/crypto/bn/asm/armv4-gf2m.S
new file mode 100644
index 00000000..038f0864
--- /dev/null
+++ b/main/openssl/crypto/bn/asm/armv4-gf2m.S
@@ -0,0 +1,213 @@
+#include "arm_arch.h"
+
+.text
+.code 32
+
+#if __ARM_ARCH__>=7
+.fpu neon
+
+.type mul_1x1_neon,%function
+.align 5
+mul_1x1_neon:
+ vshl.u64 d2,d16,#8 @ q1-q3 are slided
+ vmull.p8 q0,d16,d17 @ a·bb
+ vshl.u64 d4,d16,#16
+ vmull.p8 q1,d2,d17 @ a<<8·bb
+ vshl.u64 d6,d16,#24
+ vmull.p8 q2,d4,d17 @ a<<16·bb
+ vshr.u64 d2,#8
+ vmull.p8 q3,d6,d17 @ a<<24·bb
+ vshl.u64 d3,#24
+ veor d0,d2
+ vshr.u64 d4,#16
+ veor d0,d3
+ vshl.u64 d5,#16
+ veor d0,d4
+ vshr.u64 d6,#24
+ veor d0,d5
+ vshl.u64 d7,#8
+ veor d0,d6
+ veor d0,d7
+ .word 0xe12fff1e
+.size mul_1x1_neon,.-mul_1x1_neon
+#endif
+.type mul_1x1_ialu,%function
+.align 5
+mul_1x1_ialu:
+ mov r4,#0
+ bic r5,r1,#3<<30 @ a1=a&0x3fffffff
+ str r4,[sp,#0] @ tab[0]=0
+ add r6,r5,r5 @ a2=a1<<1
+ str r5,[sp,#4] @ tab[1]=a1
+ eor r7,r5,r6 @ a1^a2
+ str r6,[sp,#8] @ tab[2]=a2
+ mov r8,r5,lsl#2 @ a4=a1<<2
+ str r7,[sp,#12] @ tab[3]=a1^a2
+ eor r9,r5,r8 @ a1^a4
+ str r8,[sp,#16] @ tab[4]=a4
+ eor r4,r6,r8 @ a2^a4
+ str r9,[sp,#20] @ tab[5]=a1^a4
+ eor r7,r7,r8 @ a1^a2^a4
+ str r4,[sp,#24] @ tab[6]=a2^a4
+ and r8,r12,r0,lsl#2
+ str r7,[sp,#28] @ tab[7]=a1^a2^a4
+
+ and r9,r12,r0,lsr#1
+ ldr r5,[sp,r8] @ tab[b & 0x7]
+ and r8,r12,r0,lsr#4
+ ldr r7,[sp,r9] @ tab[b >> 3 & 0x7]
+ and r9,r12,r0,lsr#7
+ ldr r6,[sp,r8] @ tab[b >> 6 & 0x7]
+ eor r5,r5,r7,lsl#3 @ stall
+ mov r4,r7,lsr#29
+ ldr r7,[sp,r9] @ tab[b >> 9 & 0x7]
+
+ and r8,r12,r0,lsr#10
+ eor r5,r5,r6,lsl#6
+ eor r4,r4,r6,lsr#26
+ ldr r6,[sp,r8] @ tab[b >> 12 & 0x7]
+
+ and r9,r12,r0,lsr#13
+ eor r5,r5,r7,lsl#9
+ eor r4,r4,r7,lsr#23
+ ldr r7,[sp,r9] @ tab[b >> 15 & 0x7]
+
+ and r8,r12,r0,lsr#16
+ eor r5,r5,r6,lsl#12
+ eor r4,r4,r6,lsr#20
+ ldr r6,[sp,r8] @ tab[b >> 18 & 0x7]
+
+ and r9,r12,r0,lsr#19
+ eor r5,r5,r7,lsl#15
+ eor r4,r4,r7,lsr#17
+ ldr r7,[sp,r9] @ tab[b >> 21 & 0x7]
+
+ and r8,r12,r0,lsr#22
+ eor r5,r5,r6,lsl#18
+ eor r4,r4,r6,lsr#14
+ ldr r6,[sp,r8] @ tab[b >> 24 & 0x7]
+
+ and r9,r12,r0,lsr#25
+ eor r5,r5,r7,lsl#21
+ eor r4,r4,r7,lsr#11
+ ldr r7,[sp,r9] @ tab[b >> 27 & 0x7]
+
+ tst r1,#1<<30
+ and r8,r12,r0,lsr#28
+ eor r5,r5,r6,lsl#24
+ eor r4,r4,r6,lsr#8
+ ldr r6,[sp,r8] @ tab[b >> 30 ]
+
+ eorne r5,r5,r0,lsl#30
+ eorne r4,r4,r0,lsr#2
+ tst r1,#1<<31
+ eor r5,r5,r7,lsl#27
+ eor r4,r4,r7,lsr#5
+ eorne r5,r5,r0,lsl#31
+ eorne r4,r4,r0,lsr#1
+ eor r5,r5,r6,lsl#30
+ eor r4,r4,r6,lsr#2
+
+ mov pc,lr
+.size mul_1x1_ialu,.-mul_1x1_ialu
+.global bn_GF2m_mul_2x2
+.type bn_GF2m_mul_2x2,%function
+.align 5
+bn_GF2m_mul_2x2:
+#if __ARM_ARCH__>=7
+ ldr r12,.LOPENSSL_armcap
+.Lpic: ldr r12,[pc,r12]
+ tst r12,#1
+ beq .Lialu
+
+ veor d18,d18
+ vmov.32 d19,r3,r3 @ two copies of b1
+ vmov.32 d18[0],r1 @ a1
+
+ veor d20,d20
+ vld1.32 d21[],[sp,:32] @ two copies of b0
+ vmov.32 d20[0],r2 @ a0
+ mov r12,lr
+
+ vmov d16,d18
+ vmov d17,d19
+ bl mul_1x1_neon @ a1·b1
+ vmov d22,d0
+
+ vmov d16,d20
+ vmov d17,d21
+ bl mul_1x1_neon @ a0·b0
+ vmov d23,d0
+
+ veor d16,d20,d18
+ veor d17,d21,d19
+ veor d20,d23,d22
+ bl mul_1x1_neon @ (a0+a1)·(b0+b1)
+
+ veor d0,d20 @ (a0+a1)·(b0+b1)-a0·b0-a1·b1
+ vshl.u64 d1,d0,#32
+ vshr.u64 d0,d0,#32
+ veor d23,d1
+ veor d22,d0
+ vst1.32 {d23[0]},[r0,:32]!
+ vst1.32 {d23[1]},[r0,:32]!
+ vst1.32 {d22[0]},[r0,:32]!
+ vst1.32 {d22[1]},[r0,:32]
+ bx r12
+.align 4
+.Lialu:
+#endif
+ stmdb sp!,{r4-r10,lr}
+ mov r10,r0 @ reassign 1st argument
+ mov r0,r3 @ r0=b1
+ ldr r3,[sp,#32] @ load b0
+ mov r12,#7<<2
+ sub sp,sp,#32 @ allocate tab[8]
+
+ bl mul_1x1_ialu @ a1·b1
+ str r5,[r10,#8]
+ str r4,[r10,#12]
+
+ eor r0,r0,r3 @ flip b0 and b1
+ eor r1,r1,r2 @ flip a0 and a1
+ eor r3,r3,r0
+ eor r2,r2,r1
+ eor r0,r0,r3
+ eor r1,r1,r2
+ bl mul_1x1_ialu @ a0·b0
+ str r5,[r10]
+ str r4,[r10,#4]
+
+ eor r1,r1,r2
+ eor r0,r0,r3
+ bl mul_1x1_ialu @ (a1+a0)·(b1+b0)
+ ldmia r10,{r6-r9}
+ eor r5,r5,r4
+ eor r4,r4,r7
+ eor r5,r5,r6
+ eor r4,r4,r8
+ eor r5,r5,r9
+ eor r4,r4,r9
+ str r4,[r10,#8]
+ eor r5,r5,r4
+ add sp,sp,#32 @ destroy tab[8]
+ str r5,[r10,#4]
+
+#if __ARM_ARCH__>=5
+ ldmia sp!,{r4-r10,pc}
+#else
+ ldmia sp!,{r4-r10,lr}
+ tst lr,#1
+ moveq pc,lr @ be binary compatible with V4, yet
+ .word 0xe12fff1e @ interoperable with Thumb ISA:-)
+#endif
+.size bn_GF2m_mul_2x2,.-bn_GF2m_mul_2x2
+#if __ARM_ARCH__>=7
+.align 5
+.LOPENSSL_armcap:
+.word OPENSSL_armcap_P-(.Lpic+8)
+#endif
+.asciz "GF(2^m) Multiplication for ARMv4/NEON, CRYPTOGAMS by <appro@openssl.org>"
+.align 5
+
+.comm OPENSSL_armcap_P,4,4