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-rw-r--r--openssl/crypto/bn/asm/armv4-mont.s145
1 files changed, 0 insertions, 145 deletions
diff --git a/openssl/crypto/bn/asm/armv4-mont.s b/openssl/crypto/bn/asm/armv4-mont.s
deleted file mode 100644
index 0488455f..00000000
--- a/openssl/crypto/bn/asm/armv4-mont.s
+++ /dev/null
@@ -1,145 +0,0 @@
-.text
-
-.global bn_mul_mont
-.type bn_mul_mont,%function
-
-.align 2
-bn_mul_mont:
- stmdb sp!,{r0,r2} @ sp points at argument block
- ldr r0,[sp,#3*4] @ load num
- cmp r0,#2
- movlt r0,#0
- addlt sp,sp,#2*4
- blt .Labrt
-
- stmdb sp!,{r4-r12,lr} @ save 10 registers
-
- mov r0,r0,lsl#2 @ rescale r0 for byte count
- sub sp,sp,r0 @ alloca(4*num)
- sub sp,sp,#4 @ +extra dword
- sub r0,r0,#4 @ "num=num-1"
- add r4,r2,r0 @ &bp[num-1]
-
- add r0,sp,r0 @ r0 to point at &tp[num-1]
- ldr r8,[r0,#14*4] @ &n0
- ldr r2,[r2] @ bp[0]
- ldr r5,[r1],#4 @ ap[0],ap++
- ldr r6,[r3],#4 @ np[0],np++
- ldr r8,[r8] @ *n0
- str r4,[r0,#15*4] @ save &bp[num]
-
- umull r10,r11,r5,r2 @ ap[0]*bp[0]
- str r8,[r0,#14*4] @ save n0 value
- mul r8,r10,r8 @ "tp[0]"*n0
- mov r12,#0
- umlal r10,r12,r6,r8 @ np[0]*n0+"t[0]"
- mov r4,sp
-
-.L1st:
- ldr r5,[r1],#4 @ ap[j],ap++
- mov r10,r11
- mov r11,#0
- umlal r10,r11,r5,r2 @ ap[j]*bp[0]
- ldr r6,[r3],#4 @ np[j],np++
- mov r14,#0
- umlal r12,r14,r6,r8 @ np[j]*n0
- adds r12,r12,r10
- str r12,[r4],#4 @ tp[j-1]=,tp++
- adc r12,r14,#0
- cmp r4,r0
- bne .L1st
-
- adds r12,r12,r11
- mov r14,#0
- adc r14,r14,#0
- ldr r4,[r0,#13*4] @ restore bp
- str r12,[r0] @ tp[num-1]=
- ldr r8,[r0,#14*4] @ restore n0
- str r14,[r0,#4] @ tp[num]=
-
-.Louter:
- sub r7,r0,sp @ "original" r0-1 value
- sub r1,r1,r7 @ "rewind" ap to &ap[1]
- sub r3,r3,r7 @ "rewind" np to &np[1]
- ldr r2,[r4,#4]! @ *(++bp)
- ldr r5,[r1,#-4] @ ap[0]
- ldr r6,[r3,#-4] @ np[0]
- ldr r10,[sp] @ tp[0]
- ldr r7,[sp,#4] @ tp[1]
-
- mov r11,#0
- umlal r10,r11,r5,r2 @ ap[0]*bp[i]+tp[0]
- str r4,[r0,#13*4] @ save bp
- mul r8,r10,r8
- mov r12,#0
- umlal r10,r12,r6,r8 @ np[0]*n0+"tp[0]"
- mov r4,sp
-
-.Linner:
- ldr r5,[r1],#4 @ ap[j],ap++
- adds r10,r11,r7 @ +=tp[j]
- mov r11,#0
- umlal r10,r11,r5,r2 @ ap[j]*bp[i]
- ldr r6,[r3],#4 @ np[j],np++
- mov r14,#0
- umlal r12,r14,r6,r8 @ np[j]*n0
- ldr r7,[r4,#8] @ tp[j+1]
- adc r11,r11,#0
- adds r12,r12,r10
- str r12,[r4],#4 @ tp[j-1]=,tp++
- adc r12,r14,#0
- cmp r4,r0
- bne .Linner
-
- adds r12,r12,r11
- mov r14,#0
- adc r14,r14,#0
- adds r12,r12,r7
- adc r14,r14,#0
- ldr r4,[r0,#13*4] @ restore bp
- ldr r7,[r0,#15*4] @ restore &bp[num]
- str r12,[r0] @ tp[num-1]=
- ldr r8,[r0,#14*4] @ restore n0
- str r14,[r0,#4] @ tp[num]=
-
- cmp r4,r7
- bne .Louter
-
- ldr r2,[r0,#12*4] @ pull rp
- add r0,r0,#4 @ r0 to point at &tp[num]
- sub r5,r0,sp @ "original" num value
- mov r4,sp @ "rewind" r4
- mov r1,r4 @ "borrow" r1
- sub r3,r3,r5 @ "rewind" r3 to &np[0]
-
- subs r7,r7,r7 @ "clear" carry flag
-.Lsub: ldr r7,[r4],#4
- ldr r6,[r3],#4
- sbcs r7,r7,r6 @ tp[j]-np[j]
- str r7,[r2],#4 @ rp[j]=
- teq r4,r0 @ preserve carry
- bne .Lsub
- sbcs r14,r14,#0 @ upmost carry
- mov r4,sp @ "rewind" r4
- sub r2,r2,r5 @ "rewind" r2
-
- and r1,r4,r14
- bic r3,r2,r14
- orr r1,r1,r3 @ ap=borrow?tp:rp
-
-.Lcopy: ldr r7,[r1],#4 @ copy or in-place refresh
- str sp,[r4],#4 @ zap tp
- str r7,[r2],#4
- cmp r4,r0
- bne .Lcopy
-
- add sp,r0,#4 @ skip over tp[num+1]
- ldmia sp!,{r4-r12,lr} @ restore registers
- add sp,sp,#2*4 @ skip over {r0,r2}
- mov r0,#1
-.Labrt: tst lr,#1
- moveq pc,lr @ be binary compatible with V4, yet
- .word 0xe12fff1e @ interoperable with Thumb ISA:-)
-.size bn_mul_mont,.-bn_mul_mont
-.asciz "Montgomery multiplication for ARMv4, CRYPTOGAMS by <appro@openssl.org>"
-.align 2