diff options
Diffstat (limited to 'app/openssl/crypto/bn/asm/armv4-mont.s')
-rw-r--r-- | app/openssl/crypto/bn/asm/armv4-mont.s | 145 |
1 files changed, 0 insertions, 145 deletions
diff --git a/app/openssl/crypto/bn/asm/armv4-mont.s b/app/openssl/crypto/bn/asm/armv4-mont.s deleted file mode 100644 index 64c220b5..00000000 --- a/app/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 - ldr r6,[r3],#4 @ np[j],np++ - mov r11,#0 - umlal r10,r11,r5,r2 @ ap[j]*bp[0] - 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 - ldr r4,[r0,#13*4] @ restore bp - mov r14,#0 - ldr r8,[r0,#14*4] @ restore n0 - adc r14,r14,#0 - str r12,[r0] @ tp[num-1]= - str r14,[r0,#4] @ tp[num]= - -.Louter: - sub r7,r0,sp @ "original" r0-1 value - sub r1,r1,r7 @ "rewind" ap to &ap[1] - ldr r2,[r4,#4]! @ *(++bp) - sub r3,r3,r7 @ "rewind" np to &np[1] - ldr r5,[r1,#-4] @ ap[0] - ldr r10,[sp] @ tp[0] - ldr r6,[r3,#-4] @ np[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] - ldr r6,[r3],#4 @ np[j],np++ - mov r11,#0 - umlal r10,r11,r5,r2 @ ap[j]*bp[i] - mov r14,#0 - umlal r12,r14,r6,r8 @ np[j]*n0 - adc r11,r11,#0 - ldr r7,[r4,#8] @ tp[j+1] - 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 - ldr r4,[r0,#13*4] @ restore bp - adc r14,r14,#0 - ldr r8,[r0,#14*4] @ restore n0 - adds r12,r12,r7 - ldr r7,[r0,#15*4] @ restore &bp[num] - adc r14,r14,#0 - str r12,[r0] @ tp[num-1]= - 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 |