Hi,

I am currently building openssl under Solaris 10 to test the pkcs11
patch [1] and I've discovered a strange bug: Sun Studio 12 seems to
generate v8plus code instead of v8 code when compiling assembly code.

You can easily reproduce the bug using the attached file (sparcv8.S)
under current10s:

$ /opt/SUNWspro/bin/cc -I.. -I../.. -I../../include -KPIC -DOPENSSL_PIC
-DOPENSSL_THREADS -D_REENTRANT -DDSO_DLFCN -DHAVE_DLFCN_H -xarch=v8 -xO5
-xstrconst -xdepend -Xa -DB_ENDIAN -DBN_DIV2W -c sparcv8.S && elfdump
sparcv8.o | grep machine
  e_machine:  EM_SPARC32PLUS      e_version:    EV_CURRENT

The machine identifier is EM_SPARC32PLUS, it should be EM_SPARC.

$ /opt/studio/SOS11/SUNWspro/bin/cc -I.. -I../.. -I../../include -KPIC
-DOPENSSL_PIC -DOPENSSL_THREADS -D_REENTRANT -DDSO_DLFCN -DHAVE_DLFCN_H
-xarch=v8 -xO5 -xstrconst -xdepend -Xa -DB_ENDIAN -DBN_DIV2W -c
sparcv8.S && elfdump sparcv8.o | grep machine
  e_machine:  EM_SPARC            e_version:    EV_CURRENT

The bug doesn't happen with Sun Studio 12.1 et Sun Studio 12.2:

$ /opt/SUNWspro/bin/cc -I.. -I../.. -I../../include -KPIC -DOPENSSL_PIC
-DOPENSSL_THREADS -D_REENTRANT -DDSO_DLFCN -DHAVE_DLFCN_H -xarch=v8 -xO5
-xstrconst -xdepend -Xa -DB_ENDIAN -DBN_DIV2W -c sparcv8.S  && elfdump
sparcv8.o | grep machine
  e_machine:  EM_SPARC            e_version:    EV_CURRENT

$ /opt/solstudio12.2/bin/cc -I.. -I../.. -I../../include -KPIC
-DOPENSSL_PIC -DOPENSSL_THREADS -D_REENTRANT -DDSO_DLFCN -DHAVE_DLFCN_H
-xarch=v8 -xO5 -xstrconst -xdepend -Xa -DB_ENDIAN -DBN_DIV2W -c
sparcv8.S && elfdump sparcv8.o | grep machine
  e_machine:  EM_SPARC            e_version:    EV_CURRENT

The bug doesn't happen on current9s using the same command lines.

I will switch to Sun Studio 12.1 for now (BTW it seems it's not
installed on current9s) but if someone has a clue on this issue, I would
be interested.

BTW I've noticed this bug thanks to Maciej's package checking code.

Thanks in advance for your answers.

Yann

[1] http://blogs.sun.com/janp/entry/pkcs_11_engine_patch_including





.ident  "sparcv8.s, Version 1.4"
.ident  "SPARC v8 ISA artwork by Andy Polyakov <[email protected]>"

/*
 * ====================================================================
 * Written by Andy Polyakov <[email protected]> for the OpenSSL
 * project.
 *
 * Rights for redistribution and usage in source and binary forms are
 * granted according to the OpenSSL license. Warranty of any kind is
 * disclaimed.
 * ====================================================================
 */

/*
 * This is my modest contributon to OpenSSL project (see
 * http://www.openssl.org/ for more information about it) and is
 * a drop-in SuperSPARC ISA replacement for crypto/bn/bn_asm.c
 * module. For updates see http://fy.chalmers.se/~appro/hpe/.
 *
 * See bn_asm.sparc.v8plus.S for more details.
 */

/*
 * Revision history.
 *
 * 1.1  - new loop unrolling model(*);
 * 1.2  - made gas friendly;
 * 1.3  - fixed problem with /usr/ccs/lib/cpp;
 * 1.4  - some retunes;
 *
 * (*)  see bn_asm.sparc.v8plus.S for details
 */

.section        ".text",#alloc,#execinstr
.file           "bn_asm.sparc.v8.S"

.align  32

.global bn_mul_add_words
/*
 * BN_ULONG bn_mul_add_words(rp,ap,num,w)
 * BN_ULONG *rp,*ap;
 * int num;
 * BN_ULONG w;
 */
bn_mul_add_words:
        cmp     %o2,0
        bg,a    .L_bn_mul_add_words_proceed
        ld      [%o1],%g2
        retl
        clr     %o0

.L_bn_mul_add_words_proceed:
        andcc   %o2,-4,%g0
        bz      .L_bn_mul_add_words_tail
        clr     %o5

.L_bn_mul_add_words_loop:
        ld      [%o0],%o4
        ld      [%o1+4],%g3
        umul    %o3,%g2,%g2
        rd      %y,%g1
        addcc   %o4,%o5,%o4
        addx    %g1,0,%g1
        addcc   %o4,%g2,%o4
        st      %o4,[%o0]
        addx    %g1,0,%o5

        ld      [%o0+4],%o4
        ld      [%o1+8],%g2
        umul    %o3,%g3,%g3
        dec     4,%o2
        rd      %y,%g1
        addcc   %o4,%o5,%o4
        addx    %g1,0,%g1
        addcc   %o4,%g3,%o4
        st      %o4,[%o0+4]
        addx    %g1,0,%o5

        ld      [%o0+8],%o4
        ld      [%o1+12],%g3
        umul    %o3,%g2,%g2
        inc     16,%o1
        rd      %y,%g1
        addcc   %o4,%o5,%o4
        addx    %g1,0,%g1
        addcc   %o4,%g2,%o4
        st      %o4,[%o0+8]
        addx    %g1,0,%o5

        ld      [%o0+12],%o4
        umul    %o3,%g3,%g3
        inc     16,%o0
        rd      %y,%g1
        addcc   %o4,%o5,%o4
        addx    %g1,0,%g1
        addcc   %o4,%g3,%o4
        st      %o4,[%o0-4]
        addx    %g1,0,%o5
        andcc   %o2,-4,%g0
        bnz,a   .L_bn_mul_add_words_loop
        ld      [%o1],%g2

        tst     %o2
        bnz,a   .L_bn_mul_add_words_tail
        ld      [%o1],%g2
.L_bn_mul_add_words_return:
        retl
        mov     %o5,%o0
        nop

.L_bn_mul_add_words_tail:
        ld      [%o0],%o4
        umul    %o3,%g2,%g2
        addcc   %o4,%o5,%o4
        rd      %y,%g1
        addx    %g1,0,%g1
        addcc   %o4,%g2,%o4
        addx    %g1,0,%o5
        deccc   %o2
        bz      .L_bn_mul_add_words_return
        st      %o4,[%o0]

        ld      [%o1+4],%g2
        ld      [%o0+4],%o4
        umul    %o3,%g2,%g2
        rd      %y,%g1
        addcc   %o4,%o5,%o4
        addx    %g1,0,%g1
        addcc   %o4,%g2,%o4
        addx    %g1,0,%o5
        deccc   %o2
        bz      .L_bn_mul_add_words_return
        st      %o4,[%o0+4]

        ld      [%o1+8],%g2
        ld      [%o0+8],%o4
        umul    %o3,%g2,%g2
        rd      %y,%g1
        addcc   %o4,%o5,%o4
        addx    %g1,0,%g1
        addcc   %o4,%g2,%o4
        st      %o4,[%o0+8]
        retl
        addx    %g1,0,%o0

.type   bn_mul_add_words,#function
.size   bn_mul_add_words,(.-bn_mul_add_words)

.align  32

.global bn_mul_words
/*
 * BN_ULONG bn_mul_words(rp,ap,num,w)
 * BN_ULONG *rp,*ap;
 * int num;
 * BN_ULONG w;
 */
bn_mul_words:
        cmp     %o2,0
        bg,a    .L_bn_mul_words_proceeed
        ld      [%o1],%g2
        retl
        clr     %o0

.L_bn_mul_words_proceeed:
        andcc   %o2,-4,%g0
        bz      .L_bn_mul_words_tail
        clr     %o5

.L_bn_mul_words_loop:
        ld      [%o1+4],%g3
        umul    %o3,%g2,%g2
        addcc   %g2,%o5,%g2
        rd      %y,%g1
        addx    %g1,0,%o5
        st      %g2,[%o0]

        ld      [%o1+8],%g2
        umul    %o3,%g3,%g3
        addcc   %g3,%o5,%g3
        rd      %y,%g1
        dec     4,%o2
        addx    %g1,0,%o5
        st      %g3,[%o0+4]

        ld      [%o1+12],%g3
        umul    %o3,%g2,%g2
        addcc   %g2,%o5,%g2
        rd      %y,%g1
        inc     16,%o1
        st      %g2,[%o0+8]
        addx    %g1,0,%o5

        umul    %o3,%g3,%g3
        addcc   %g3,%o5,%g3
        rd      %y,%g1
        inc     16,%o0
        addx    %g1,0,%o5
        st      %g3,[%o0-4]
        andcc   %o2,-4,%g0
        nop
        bnz,a   .L_bn_mul_words_loop
        ld      [%o1],%g2

        tst     %o2
        bnz,a   .L_bn_mul_words_tail
        ld      [%o1],%g2
.L_bn_mul_words_return:
        retl
        mov     %o5,%o0
        nop

.L_bn_mul_words_tail:
        umul    %o3,%g2,%g2
        addcc   %g2,%o5,%g2
        rd      %y,%g1
        addx    %g1,0,%o5
        deccc   %o2
        bz      .L_bn_mul_words_return
        st      %g2,[%o0]
        nop

        ld      [%o1+4],%g2
        umul    %o3,%g2,%g2
        addcc   %g2,%o5,%g2
        rd      %y,%g1
        addx    %g1,0,%o5
        deccc   %o2
        bz      .L_bn_mul_words_return
        st      %g2,[%o0+4]

        ld      [%o1+8],%g2
        umul    %o3,%g2,%g2
        addcc   %g2,%o5,%g2
        rd      %y,%g1
        st      %g2,[%o0+8]
        retl
        addx    %g1,0,%o0

.type   bn_mul_words,#function
.size   bn_mul_words,(.-bn_mul_words)

.align  32
.global bn_sqr_words
/*
 * void bn_sqr_words(r,a,n)
 * BN_ULONG *r,*a;
 * int n;
 */
bn_sqr_words:
        cmp     %o2,0
        bg,a    .L_bn_sqr_words_proceeed
        ld      [%o1],%g2
        retl
        clr     %o0

.L_bn_sqr_words_proceeed:
        andcc   %o2,-4,%g0
        bz      .L_bn_sqr_words_tail
        clr     %o5

.L_bn_sqr_words_loop:
        ld      [%o1+4],%g3
        umul    %g2,%g2,%o4
        st      %o4,[%o0]
        rd      %y,%o5
        st      %o5,[%o0+4]

        ld      [%o1+8],%g2
        umul    %g3,%g3,%o4
        dec     4,%o2
        st      %o4,[%o0+8]
        rd      %y,%o5
        st      %o5,[%o0+12]
        nop

        ld      [%o1+12],%g3
        umul    %g2,%g2,%o4
        st      %o4,[%o0+16]
        rd      %y,%o5
        inc     16,%o1
        st      %o5,[%o0+20]

        umul    %g3,%g3,%o4
        inc     32,%o0
        st      %o4,[%o0-8]
        rd      %y,%o5
        st      %o5,[%o0-4]
        andcc   %o2,-4,%g2
        bnz,a   .L_bn_sqr_words_loop
        ld      [%o1],%g2

        tst     %o2
        nop
        bnz,a   .L_bn_sqr_words_tail
        ld      [%o1],%g2
.L_bn_sqr_words_return:
        retl
        clr     %o0

.L_bn_sqr_words_tail:
        umul    %g2,%g2,%o4
        st      %o4,[%o0]
        deccc   %o2
        rd      %y,%o5
        bz      .L_bn_sqr_words_return
        st      %o5,[%o0+4]

        ld      [%o1+4],%g2
        umul    %g2,%g2,%o4
        st      %o4,[%o0+8]
        deccc   %o2
        rd      %y,%o5
        nop
        bz      .L_bn_sqr_words_return
        st      %o5,[%o0+12]

        ld      [%o1+8],%g2
        umul    %g2,%g2,%o4
        st      %o4,[%o0+16]
        rd      %y,%o5
        st      %o5,[%o0+20]
        retl
        clr     %o0

.type   bn_sqr_words,#function
.size   bn_sqr_words,(.-bn_sqr_words)

.align  32

.global bn_div_words
/*
 * BN_ULONG bn_div_words(h,l,d)
 * BN_ULONG h,l,d;
 */
bn_div_words:
        wr      %o0,%y
        udiv    %o1,%o2,%o0
        retl
        nop

.type   bn_div_words,#function
.size   bn_div_words,(.-bn_div_words)

.align  32

.global bn_add_words
/*
 * BN_ULONG bn_add_words(rp,ap,bp,n)
 * BN_ULONG *rp,*ap,*bp;
 * int n;
 */
bn_add_words:
        cmp     %o3,0
        bg,a    .L_bn_add_words_proceed
        ld      [%o1],%o4
        retl
        clr     %o0

.L_bn_add_words_proceed:
        andcc   %o3,-4,%g0
        bz      .L_bn_add_words_tail
        clr     %g1
        ba      .L_bn_add_words_warn_loop
        addcc   %g0,0,%g0       ! clear carry flag

.L_bn_add_words_loop:
        ld      [%o1],%o4
.L_bn_add_words_warn_loop:
        ld      [%o2],%o5
        ld      [%o1+4],%g3
        ld      [%o2+4],%g4
        dec     4,%o3
        addxcc  %o5,%o4,%o5
        st      %o5,[%o0]

        ld      [%o1+8],%o4
        ld      [%o2+8],%o5
        inc     16,%o1
        addxcc  %g3,%g4,%g3
        st      %g3,[%o0+4]
        
        ld      [%o1-4],%g3
        ld      [%o2+12],%g4
        inc     16,%o2
        addxcc  %o5,%o4,%o5
        st      %o5,[%o0+8]

        inc     16,%o0
        addxcc  %g3,%g4,%g3
        st      %g3,[%o0-4]
        addx    %g0,0,%g1
        andcc   %o3,-4,%g0
        bnz,a   .L_bn_add_words_loop
        addcc   %g1,-1,%g0

        tst     %o3
        bnz,a   .L_bn_add_words_tail
        ld      [%o1],%o4
.L_bn_add_words_return:
        retl
        mov     %g1,%o0

.L_bn_add_words_tail:
        addcc   %g1,-1,%g0
        ld      [%o2],%o5
        addxcc  %o5,%o4,%o5
        addx    %g0,0,%g1
        deccc   %o3
        bz      .L_bn_add_words_return
        st      %o5,[%o0]

        ld      [%o1+4],%o4
        addcc   %g1,-1,%g0
        ld      [%o2+4],%o5
        addxcc  %o5,%o4,%o5
        addx    %g0,0,%g1
        deccc   %o3
        bz      .L_bn_add_words_return
        st      %o5,[%o0+4]

        ld      [%o1+8],%o4
        addcc   %g1,-1,%g0
        ld      [%o2+8],%o5
        addxcc  %o5,%o4,%o5
        st      %o5,[%o0+8]
        retl
        addx    %g0,0,%o0

.type   bn_add_words,#function
.size   bn_add_words,(.-bn_add_words)

.align  32

.global bn_sub_words
/*
 * BN_ULONG bn_sub_words(rp,ap,bp,n)
 * BN_ULONG *rp,*ap,*bp;
 * int n;
 */
bn_sub_words:
        cmp     %o3,0
        bg,a    .L_bn_sub_words_proceed
        ld      [%o1],%o4
        retl
        clr     %o0

.L_bn_sub_words_proceed:
        andcc   %o3,-4,%g0
        bz      .L_bn_sub_words_tail
        clr     %g1
        ba      .L_bn_sub_words_warm_loop
        addcc   %g0,0,%g0       ! clear carry flag

.L_bn_sub_words_loop:
        ld      [%o1],%o4
.L_bn_sub_words_warm_loop:
        ld      [%o2],%o5
        ld      [%o1+4],%g3
        ld      [%o2+4],%g4
        dec     4,%o3
        subxcc  %o4,%o5,%o5
        st      %o5,[%o0]

        ld      [%o1+8],%o4
        ld      [%o2+8],%o5
        inc     16,%o1
        subxcc  %g3,%g4,%g4
        st      %g4,[%o0+4]
        
        ld      [%o1-4],%g3
        ld      [%o2+12],%g4
        inc     16,%o2
        subxcc  %o4,%o5,%o5
        st      %o5,[%o0+8]

        inc     16,%o0
        subxcc  %g3,%g4,%g4
        st      %g4,[%o0-4]
        addx    %g0,0,%g1
        andcc   %o3,-4,%g0
        bnz,a   .L_bn_sub_words_loop
        addcc   %g1,-1,%g0

        tst     %o3
        nop
        bnz,a   .L_bn_sub_words_tail
        ld      [%o1],%o4
.L_bn_sub_words_return:
        retl
        mov     %g1,%o0

.L_bn_sub_words_tail:
        addcc   %g1,-1,%g0
        ld      [%o2],%o5
        subxcc  %o4,%o5,%o5
        addx    %g0,0,%g1
        deccc   %o3
        bz      .L_bn_sub_words_return
        st      %o5,[%o0]
        nop

        ld      [%o1+4],%o4
        addcc   %g1,-1,%g0
        ld      [%o2+4],%o5
        subxcc  %o4,%o5,%o5
        addx    %g0,0,%g1
        deccc   %o3
        bz      .L_bn_sub_words_return
        st      %o5,[%o0+4]

        ld      [%o1+8],%o4
        addcc   %g1,-1,%g0
        ld      [%o2+8],%o5
        subxcc  %o4,%o5,%o5
        st      %o5,[%o0+8]
        retl
        addx    %g0,0,%o0

.type   bn_sub_words,#function
.size   bn_sub_words,(.-bn_sub_words)

#define FRAME_SIZE      -96

/*
 * Here is register usage map for *all* routines below.
 */
#define t_1     %o0
#define t_2     %o1
#define c_1     %o2
#define c_2     %o3
#define c_3     %o4

#define ap(I)   [%i1+4*I]
#define bp(I)   [%i2+4*I]
#define rp(I)   [%i0+4*I]

#define a_0     %l0
#define a_1     %l1
#define a_2     %l2
#define a_3     %l3
#define a_4     %l4
#define a_5     %l5
#define a_6     %l6
#define a_7     %l7

#define b_0     %i3
#define b_1     %i4
#define b_2     %i5
#define b_3     %o5
#define b_4     %g1
#define b_5     %g2
#define b_6     %g3
#define b_7     %g4

.align  32
.global bn_mul_comba8
/*
 * void bn_mul_comba8(r,a,b)
 * BN_ULONG *r,*a,*b;
 */
bn_mul_comba8:
        save    %sp,FRAME_SIZE,%sp
        ld      ap(0),a_0
        ld      bp(0),b_0
        umul    a_0,b_0,c_1     !=!mul_add_c(a[0],b[0],c1,c2,c3);
        ld      bp(1),b_1
        rd      %y,c_2
        st      c_1,rp(0)       !r[0]=c1;

        umul    a_0,b_1,t_1     !=!mul_add_c(a[0],b[1],c2,c3,c1);
        ld      ap(1),a_1
        addcc   c_2,t_1,c_2
        rd      %y,t_2
        addxcc  %g0,t_2,c_3     !=
        addx    %g0,%g0,c_1
        ld      ap(2),a_2
        umul    a_1,b_0,t_1     !mul_add_c(a[1],b[0],c2,c3,c1);
        addcc   c_2,t_1,c_2     !=
        rd      %y,t_2
        addxcc  c_3,t_2,c_3
        st      c_2,rp(1)       !r[1]=c2;
        addx    c_1,%g0,c_1     !=

        umul    a_2,b_0,t_1     !mul_add_c(a[2],b[0],c3,c1,c2);
        addcc   c_3,t_1,c_3
        rd      %y,t_2
        addxcc  c_1,t_2,c_1     !=
        addx    %g0,%g0,c_2
        ld      bp(2),b_2
        umul    a_1,b_1,t_1     !mul_add_c(a[1],b[1],c3,c1,c2);
        addcc   c_3,t_1,c_3     !=
        rd      %y,t_2
        addxcc  c_1,t_2,c_1
        ld      bp(3),b_3
        addx    c_2,%g0,c_2     !=
        umul    a_0,b_2,t_1     !mul_add_c(a[0],b[2],c3,c1,c2);
        addcc   c_3,t_1,c_3
        rd      %y,t_2
        addxcc  c_1,t_2,c_1     !=
        addx    c_2,%g0,c_2
        st      c_3,rp(2)       !r[2]=c3;

        umul    a_0,b_3,t_1     !mul_add_c(a[0],b[3],c1,c2,c3);
        addcc   c_1,t_1,c_1     !=
        rd      %y,t_2
        addxcc  c_2,t_2,c_2
        addx    %g0,%g0,c_3
        umul    a_1,b_2,t_1     !=!mul_add_c(a[1],b[2],c1,c2,c3);
        addcc   c_1,t_1,c_1
        rd      %y,t_2
        addxcc  c_2,t_2,c_2
        addx    c_3,%g0,c_3     !=
        ld      ap(3),a_3
        umul    a_2,b_1,t_1     !mul_add_c(a[2],b[1],c1,c2,c3);
        addcc   c_1,t_1,c_1
        rd      %y,t_2          !=
        addxcc  c_2,t_2,c_2
        addx    c_3,%g0,c_3
        ld      ap(4),a_4
        umul    a_3,b_0,t_1     !mul_add_c(a[3],b[0],c1,c2,c3);!=
        addcc   c_1,t_1,c_1
        rd      %y,t_2
        addxcc  c_2,t_2,c_2
        addx    c_3,%g0,c_3     !=
        st      c_1,rp(3)       !r[3]=c1;

        umul    a_4,b_0,t_1     !mul_add_c(a[4],b[0],c2,c3,c1);
        addcc   c_2,t_1,c_2
        rd      %y,t_2          !=
        addxcc  c_3,t_2,c_3
        addx    %g0,%g0,c_1
        umul    a_3,b_1,t_1     !mul_add_c(a[3],b[1],c2,c3,c1);
        addcc   c_2,t_1,c_2     !=
        rd      %y,t_2
        addxcc  c_3,t_2,c_3
        addx    c_1,%g0,c_1
        umul    a_2,b_2,t_1     !=!mul_add_c(a[2],b[2],c2,c3,c1);
        addcc   c_2,t_1,c_2
        rd      %y,t_2
        addxcc  c_3,t_2,c_3
        addx    c_1,%g0,c_1     !=
        ld      bp(4),b_4
        umul    a_1,b_3,t_1     !mul_add_c(a[1],b[3],c2,c3,c1);
        addcc   c_2,t_1,c_2
        rd      %y,t_2          !=
        addxcc  c_3,t_2,c_3
        addx    c_1,%g0,c_1
        ld      bp(5),b_5
        umul    a_0,b_4,t_1     !=!mul_add_c(a[0],b[4],c2,c3,c1);
        addcc   c_2,t_1,c_2
        rd      %y,t_2
        addxcc  c_3,t_2,c_3
        addx    c_1,%g0,c_1     !=
        st      c_2,rp(4)       !r[4]=c2;

        umul    a_0,b_5,t_1     !mul_add_c(a[0],b[5],c3,c1,c2);
        addcc   c_3,t_1,c_3
        rd      %y,t_2          !=
        addxcc  c_1,t_2,c_1
        addx    %g0,%g0,c_2
        umul    a_1,b_4,t_1     !mul_add_c(a[1],b[4],c3,c1,c2);
        addcc   c_3,t_1,c_3     !=
        rd      %y,t_2
        addxcc  c_1,t_2,c_1
        addx    c_2,%g0,c_2
        umul    a_2,b_3,t_1     !=!mul_add_c(a[2],b[3],c3,c1,c2);
        addcc   c_3,t_1,c_3
        rd      %y,t_2
        addxcc  c_1,t_2,c_1
        addx    c_2,%g0,c_2     !=
        umul    a_3,b_2,t_1     !mul_add_c(a[3],b[2],c3,c1,c2);
        addcc   c_3,t_1,c_3
        rd      %y,t_2
        addxcc  c_1,t_2,c_1     !=
        addx    c_2,%g0,c_2
        ld      ap(5),a_5
        umul    a_4,b_1,t_1     !mul_add_c(a[4],b[1],c3,c1,c2);
        addcc   c_3,t_1,c_3     !=
        rd      %y,t_2
        addxcc  c_1,t_2,c_1
        ld      ap(6),a_6
        addx    c_2,%g0,c_2     !=
        umul    a_5,b_0,t_1     !mul_add_c(a[5],b[0],c3,c1,c2);
        addcc   c_3,t_1,c_3
        rd      %y,t_2
        addxcc  c_1,t_2,c_1     !=
        addx    c_2,%g0,c_2
        st      c_3,rp(5)       !r[5]=c3;

        umul    a_6,b_0,t_1     !mul_add_c(a[6],b[0],c1,c2,c3);
        addcc   c_1,t_1,c_1     !=
        rd      %y,t_2
        addxcc  c_2,t_2,c_2
        addx    %g0,%g0,c_3
        umul    a_5,b_1,t_1     !=!mul_add_c(a[5],b[1],c1,c2,c3);
        addcc   c_1,t_1,c_1
        rd      %y,t_2
        addxcc  c_2,t_2,c_2
        addx    c_3,%g0,c_3     !=
        umul    a_4,b_2,t_1     !mul_add_c(a[4],b[2],c1,c2,c3);
        addcc   c_1,t_1,c_1
        rd      %y,t_2
        addxcc  c_2,t_2,c_2     !=
        addx    c_3,%g0,c_3
        umul    a_3,b_3,t_1     !mul_add_c(a[3],b[3],c1,c2,c3);
        addcc   c_1,t_1,c_1
        rd      %y,t_2          !=
        addxcc  c_2,t_2,c_2
        addx    c_3,%g0,c_3
        umul    a_2,b_4,t_1     !mul_add_c(a[2],b[4],c1,c2,c3);
        addcc   c_1,t_1,c_1     !=
        rd      %y,t_2
        addxcc  c_2,t_2,c_2
        ld      bp(6),b_6
        addx    c_3,%g0,c_3     !=
        umul    a_1,b_5,t_1     !mul_add_c(a[1],b[5],c1,c2,c3);
        addcc   c_1,t_1,c_1
        rd      %y,t_2
        addxcc  c_2,t_2,c_2     !=
        addx    c_3,%g0,c_3
        ld      bp(7),b_7
        umul    a_0,b_6,t_1     !mul_add_c(a[0],b[6],c1,c2,c3);
        addcc   c_1,t_1,c_1     !=
        rd      %y,t_2
        addxcc  c_2,t_2,c_2
        st      c_1,rp(6)       !r[6]=c1;
        addx    c_3,%g0,c_3     !=

        umul    a_0,b_7,t_1     !mul_add_c(a[0],b[7],c2,c3,c1);
        addcc   c_2,t_1,c_2
        rd      %y,t_2
        addxcc  c_3,t_2,c_3     !=
        addx    %g0,%g0,c_1
        umul    a_1,b_6,t_1     !mul_add_c(a[1],b[6],c2,c3,c1);
        addcc   c_2,t_1,c_2
        rd      %y,t_2          !=
        addxcc  c_3,t_2,c_3
        addx    c_1,%g0,c_1
        umul    a_2,b_5,t_1     !mul_add_c(a[2],b[5],c2,c3,c1);
        addcc   c_2,t_1,c_2     !=
        rd      %y,t_2
        addxcc  c_3,t_2,c_3
        addx    c_1,%g0,c_1
        umul    a_3,b_4,t_1     !=!mul_add_c(a[3],b[4],c2,c3,c1);
        addcc   c_2,t_1,c_2
        rd      %y,t_2
        addxcc  c_3,t_2,c_3
        addx    c_1,%g0,c_1     !=
        umul    a_4,b_3,t_1     !mul_add_c(a[4],b[3],c2,c3,c1);
        addcc   c_2,t_1,c_2
        rd      %y,t_2
        addxcc  c_3,t_2,c_3     !=
        addx    c_1,%g0,c_1
        umul    a_5,b_2,t_1     !mul_add_c(a[5],b[2],c2,c3,c1);
        addcc   c_2,t_1,c_2
        rd      %y,t_2          !=
        addxcc  c_3,t_2,c_3
        addx    c_1,%g0,c_1
        ld      ap(7),a_7
        umul    a_6,b_1,t_1     !=!mul_add_c(a[6],b[1],c2,c3,c1);
        addcc   c_2,t_1,c_2
        rd      %y,t_2
        addxcc  c_3,t_2,c_3
        addx    c_1,%g0,c_1     !=
        umul    a_7,b_0,t_1     !mul_add_c(a[7],b[0],c2,c3,c1);
        addcc   c_2,t_1,c_2
        rd      %y,t_2
        addxcc  c_3,t_2,c_3     !=
        addx    c_1,%g0,c_1
        st      c_2,rp(7)       !r[7]=c2;

        umul    a_7,b_1,t_1     !mul_add_c(a[7],b[1],c3,c1,c2);
        addcc   c_3,t_1,c_3     !=
        rd      %y,t_2
        addxcc  c_1,t_2,c_1
        addx    %g0,%g0,c_2
        umul    a_6,b_2,t_1     !=!mul_add_c(a[6],b[2],c3,c1,c2);
        addcc   c_3,t_1,c_3
        rd      %y,t_2
        addxcc  c_1,t_2,c_1
        addx    c_2,%g0,c_2     !=
        umul    a_5,b_3,t_1     !mul_add_c(a[5],b[3],c3,c1,c2);
        addcc   c_3,t_1,c_3
        rd      %y,t_2
        addxcc  c_1,t_2,c_1     !=
        addx    c_2,%g0,c_2
        umul    a_4,b_4,t_1     !mul_add_c(a[4],b[4],c3,c1,c2);
        addcc   c_3,t_1,c_3
        rd      %y,t_2          !=
        addxcc  c_1,t_2,c_1
        addx    c_2,%g0,c_2
        umul    a_3,b_5,t_1     !mul_add_c(a[3],b[5],c3,c1,c2);
        addcc   c_3,t_1,c_3     !=
        rd      %y,t_2
        addxcc  c_1,t_2,c_1
        addx    c_2,%g0,c_2
        umul    a_2,b_6,t_1     !=!mul_add_c(a[2],b[6],c3,c1,c2);
        addcc   c_3,t_1,c_3
        rd      %y,t_2
        addxcc  c_1,t_2,c_1
        addx    c_2,%g0,c_2     !=
        umul    a_1,b_7,t_1     !mul_add_c(a[1],b[7],c3,c1,c2);
        addcc   c_3,t_1,c_3
        rd      %y,t_2
        addxcc  c_1,t_2,c_1     !
        addx    c_2,%g0,c_2
        st      c_3,rp(8)       !r[8]=c3;

        umul    a_2,b_7,t_1     !mul_add_c(a[2],b[7],c1,c2,c3);
        addcc   c_1,t_1,c_1     !=
        rd      %y,t_2
        addxcc  c_2,t_2,c_2
        addx    %g0,%g0,c_3
        umul    a_3,b_6,t_1     !=!mul_add_c(a[3],b[6],c1,c2,c3);
        addcc   c_1,t_1,c_1
        rd      %y,t_2
        addxcc  c_2,t_2,c_2
        addx    c_3,%g0,c_3     !=
        umul    a_4,b_5,t_1     !mul_add_c(a[4],b[5],c1,c2,c3);
        addcc   c_1,t_1,c_1
        rd      %y,t_2
        addxcc  c_2,t_2,c_2     !=
        addx    c_3,%g0,c_3
        umul    a_5,b_4,t_1     !mul_add_c(a[5],b[4],c1,c2,c3);
        addcc   c_1,t_1,c_1
        rd      %y,t_2          !=
        addxcc  c_2,t_2,c_2
        addx    c_3,%g0,c_3
        umul    a_6,b_3,t_1     !mul_add_c(a[6],b[3],c1,c2,c3);
        addcc   c_1,t_1,c_1     !=
        rd      %y,t_2
        addxcc  c_2,t_2,c_2
        addx    c_3,%g0,c_3
        umul    a_7,b_2,t_1     !=!mul_add_c(a[7],b[2],c1,c2,c3);
        addcc   c_1,t_1,c_1
        rd      %y,t_2
        addxcc  c_2,t_2,c_2
        addx    c_3,%g0,c_3     !=
        st      c_1,rp(9)       !r[9]=c1;

        umul    a_7,b_3,t_1     !mul_add_c(a[7],b[3],c2,c3,c1);
        addcc   c_2,t_1,c_2
        rd      %y,t_2          !=
        addxcc  c_3,t_2,c_3
        addx    %g0,%g0,c_1
        umul    a_6,b_4,t_1     !mul_add_c(a[6],b[4],c2,c3,c1);
        addcc   c_2,t_1,c_2     !=
        rd      %y,t_2
        addxcc  c_3,t_2,c_3
        addx    c_1,%g0,c_1
        umul    a_5,b_5,t_1     !=!mul_add_c(a[5],b[5],c2,c3,c1);
        addcc   c_2,t_1,c_2
        rd      %y,t_2
        addxcc  c_3,t_2,c_3
        addx    c_1,%g0,c_1     !=
        umul    a_4,b_6,t_1     !mul_add_c(a[4],b[6],c2,c3,c1);
        addcc   c_2,t_1,c_2
        rd      %y,t_2
        addxcc  c_3,t_2,c_3     !=
        addx    c_1,%g0,c_1
        umul    a_3,b_7,t_1     !mul_add_c(a[3],b[7],c2,c3,c1);
        addcc   c_2,t_1,c_2
        rd      %y,t_2          !=
        addxcc  c_3,t_2,c_3
        addx    c_1,%g0,c_1
        st      c_2,rp(10)      !r[10]=c2;

        umul    a_4,b_7,t_1     !=!mul_add_c(a[4],b[7],c3,c1,c2);
        addcc   c_3,t_1,c_3
        rd      %y,t_2
        addxcc  c_1,t_2,c_1
        addx    %g0,%g0,c_2     !=
        umul    a_5,b_6,t_1     !mul_add_c(a[5],b[6],c3,c1,c2);
        addcc   c_3,t_1,c_3
        rd      %y,t_2
        addxcc  c_1,t_2,c_1     !=
        addx    c_2,%g0,c_2
        umul    a_6,b_5,t_1     !mul_add_c(a[6],b[5],c3,c1,c2);
        addcc   c_3,t_1,c_3
        rd      %y,t_2          !=
        addxcc  c_1,t_2,c_1
        addx    c_2,%g0,c_2
        umul    a_7,b_4,t_1     !mul_add_c(a[7],b[4],c3,c1,c2);
        addcc   c_3,t_1,c_3     !=
        rd      %y,t_2
        addxcc  c_1,t_2,c_1
        st      c_3,rp(11)      !r[11]=c3;
        addx    c_2,%g0,c_2     !=

        umul    a_7,b_5,t_1     !mul_add_c(a[7],b[5],c1,c2,c3);
        addcc   c_1,t_1,c_1
        rd      %y,t_2
        addxcc  c_2,t_2,c_2     !=
        addx    %g0,%g0,c_3
        umul    a_6,b_6,t_1     !mul_add_c(a[6],b[6],c1,c2,c3);
        addcc   c_1,t_1,c_1
        rd      %y,t_2          !=
        addxcc  c_2,t_2,c_2
        addx    c_3,%g0,c_3
        umul    a_5,b_7,t_1     !mul_add_c(a[5],b[7],c1,c2,c3);
        addcc   c_1,t_1,c_1     !=
        rd      %y,t_2
        addxcc  c_2,t_2,c_2
        st      c_1,rp(12)      !r[12]=c1;
        addx    c_3,%g0,c_3     !=

        umul    a_6,b_7,t_1     !mul_add_c(a[6],b[7],c2,c3,c1);
        addcc   c_2,t_1,c_2
        rd      %y,t_2
        addxcc  c_3,t_2,c_3     !=
        addx    %g0,%g0,c_1
        umul    a_7,b_6,t_1     !mul_add_c(a[7],b[6],c2,c3,c1);
        addcc   c_2,t_1,c_2
        rd      %y,t_2          !=
        addxcc  c_3,t_2,c_3
        addx    c_1,%g0,c_1
        st      c_2,rp(13)      !r[13]=c2;

        umul    a_7,b_7,t_1     !=!mul_add_c(a[7],b[7],c3,c1,c2);
        addcc   c_3,t_1,c_3
        rd      %y,t_2
        addxcc  c_1,t_2,c_1
        nop                     !=
        st      c_3,rp(14)      !r[14]=c3;
        st      c_1,rp(15)      !r[15]=c1;

        ret
        restore %g0,%g0,%o0

.type   bn_mul_comba8,#function
.size   bn_mul_comba8,(.-bn_mul_comba8)

.align  32

.global bn_mul_comba4
/*
 * void bn_mul_comba4(r,a,b)
 * BN_ULONG *r,*a,*b;
 */
bn_mul_comba4:
        save    %sp,FRAME_SIZE,%sp
        ld      ap(0),a_0
        ld      bp(0),b_0
        umul    a_0,b_0,c_1     !=!mul_add_c(a[0],b[0],c1,c2,c3);
        ld      bp(1),b_1
        rd      %y,c_2
        st      c_1,rp(0)       !r[0]=c1;

        umul    a_0,b_1,t_1     !=!mul_add_c(a[0],b[1],c2,c3,c1);
        ld      ap(1),a_1
        addcc   c_2,t_1,c_2
        rd      %y,t_2          !=
        addxcc  %g0,t_2,c_3
        addx    %g0,%g0,c_1
        ld      ap(2),a_2
        umul    a_1,b_0,t_1     !=!mul_add_c(a[1],b[0],c2,c3,c1);
        addcc   c_2,t_1,c_2
        rd      %y,t_2
        addxcc  c_3,t_2,c_3
        addx    c_1,%g0,c_1     !=
        st      c_2,rp(1)       !r[1]=c2;

        umul    a_2,b_0,t_1     !mul_add_c(a[2],b[0],c3,c1,c2);
        addcc   c_3,t_1,c_3
        rd      %y,t_2          !=
        addxcc  c_1,t_2,c_1
        addx    %g0,%g0,c_2
        ld      bp(2),b_2
        umul    a_1,b_1,t_1     !=!mul_add_c(a[1],b[1],c3,c1,c2);
        addcc   c_3,t_1,c_3
        rd      %y,t_2
        addxcc  c_1,t_2,c_1
        addx    c_2,%g0,c_2     !=
        ld      bp(3),b_3
        umul    a_0,b_2,t_1     !mul_add_c(a[0],b[2],c3,c1,c2);
        addcc   c_3,t_1,c_3
        rd      %y,t_2          !=
        addxcc  c_1,t_2,c_1
        addx    c_2,%g0,c_2
        st      c_3,rp(2)       !r[2]=c3;

        umul    a_0,b_3,t_1     !=!mul_add_c(a[0],b[3],c1,c2,c3);
        addcc   c_1,t_1,c_1
        rd      %y,t_2
        addxcc  c_2,t_2,c_2
        addx    %g0,%g0,c_3     !=
        umul    a_1,b_2,t_1     !mul_add_c(a[1],b[2],c1,c2,c3);
        addcc   c_1,t_1,c_1
        rd      %y,t_2
        addxcc  c_2,t_2,c_2     !=
        addx    c_3,%g0,c_3
        ld      ap(3),a_3
        umul    a_2,b_1,t_1     !mul_add_c(a[2],b[1],c1,c2,c3);
        addcc   c_1,t_1,c_1     !=
        rd      %y,t_2
        addxcc  c_2,t_2,c_2
        addx    c_3,%g0,c_3
        umul    a_3,b_0,t_1     !=!mul_add_c(a[3],b[0],c1,c2,c3);
        addcc   c_1,t_1,c_1
        rd      %y,t_2
        addxcc  c_2,t_2,c_2
        addx    c_3,%g0,c_3     !=
        st      c_1,rp(3)       !r[3]=c1;

        umul    a_3,b_1,t_1     !mul_add_c(a[3],b[1],c2,c3,c1);
        addcc   c_2,t_1,c_2
        rd      %y,t_2          !=
        addxcc  c_3,t_2,c_3
        addx    %g0,%g0,c_1
        umul    a_2,b_2,t_1     !mul_add_c(a[2],b[2],c2,c3,c1);
        addcc   c_2,t_1,c_2     !=
        rd      %y,t_2
        addxcc  c_3,t_2,c_3
        addx    c_1,%g0,c_1
        umul    a_1,b_3,t_1     !=!mul_add_c(a[1],b[3],c2,c3,c1);
        addcc   c_2,t_1,c_2
        rd      %y,t_2
        addxcc  c_3,t_2,c_3
        addx    c_1,%g0,c_1     !=
        st      c_2,rp(4)       !r[4]=c2;

        umul    a_2,b_3,t_1     !mul_add_c(a[2],b[3],c3,c1,c2);
        addcc   c_3,t_1,c_3
        rd      %y,t_2          !=
        addxcc  c_1,t_2,c_1
        addx    %g0,%g0,c_2
        umul    a_3,b_2,t_1     !mul_add_c(a[3],b[2],c3,c1,c2);
        addcc   c_3,t_1,c_3     !=
        rd      %y,t_2
        addxcc  c_1,t_2,c_1
        st      c_3,rp(5)       !r[5]=c3;
        addx    c_2,%g0,c_2     !=

        umul    a_3,b_3,t_1     !mul_add_c(a[3],b[3],c1,c2,c3);
        addcc   c_1,t_1,c_1
        rd      %y,t_2
        addxcc  c_2,t_2,c_2     !=
        st      c_1,rp(6)       !r[6]=c1;
        st      c_2,rp(7)       !r[7]=c2;
        
        ret
        restore %g0,%g0,%o0

.type   bn_mul_comba4,#function
.size   bn_mul_comba4,(.-bn_mul_comba4)

.align  32

.global bn_sqr_comba8
bn_sqr_comba8:
        save    %sp,FRAME_SIZE,%sp
        ld      ap(0),a_0
        ld      ap(1),a_1
        umul    a_0,a_0,c_1     !=!sqr_add_c(a,0,c1,c2,c3);
        rd      %y,c_2
        st      c_1,rp(0)       !r[0]=c1;

        ld      ap(2),a_2
        umul    a_0,a_1,t_1     !=!sqr_add_c2(a,1,0,c2,c3,c1);
        addcc   c_2,t_1,c_2
        rd      %y,t_2
        addxcc  %g0,t_2,c_3
        addx    %g0,%g0,c_1     !=
        addcc   c_2,t_1,c_2
        addxcc  c_3,t_2,c_3
        st      c_2,rp(1)       !r[1]=c2;
        addx    c_1,%g0,c_1     !=

        umul    a_2,a_0,t_1     !sqr_add_c2(a,2,0,c3,c1,c2);
        addcc   c_3,t_1,c_3
        rd      %y,t_2
        addxcc  c_1,t_2,c_1     !=
        addx    %g0,%g0,c_2
        addcc   c_3,t_1,c_3
        addxcc  c_1,t_2,c_1
        addx    c_2,%g0,c_2     !=
        ld      ap(3),a_3
        umul    a_1,a_1,t_1     !sqr_add_c(a,1,c3,c1,c2);
        addcc   c_3,t_1,c_3
        rd      %y,t_2          !=
        addxcc  c_1,t_2,c_1
        addx    c_2,%g0,c_2
        st      c_3,rp(2)       !r[2]=c3;

        umul    a_0,a_3,t_1     !=!sqr_add_c2(a,3,0,c1,c2,c3);
        addcc   c_1,t_1,c_1
        rd      %y,t_2
        addxcc  c_2,t_2,c_2
        addx    %g0,%g0,c_3     !=
        addcc   c_1,t_1,c_1
        addxcc  c_2,t_2,c_2
        ld      ap(4),a_4
        addx    c_3,%g0,c_3     !=
        umul    a_1,a_2,t_1     !sqr_add_c2(a,2,1,c1,c2,c3);
        addcc   c_1,t_1,c_1
        rd      %y,t_2
        addxcc  c_2,t_2,c_2     !=
        addx    c_3,%g0,c_3
        addcc   c_1,t_1,c_1
        addxcc  c_2,t_2,c_2
        addx    c_3,%g0,c_3     !=
        st      c_1,rp(3)       !r[3]=c1;

        umul    a_4,a_0,t_1     !sqr_add_c2(a,4,0,c2,c3,c1);
        addcc   c_2,t_1,c_2
        rd      %y,t_2          !=
        addxcc  c_3,t_2,c_3
        addx    %g0,%g0,c_1
        addcc   c_2,t_1,c_2
        addxcc  c_3,t_2,c_3     !=
        addx    c_1,%g0,c_1
        umul    a_3,a_1,t_1     !sqr_add_c2(a,3,1,c2,c3,c1);
        addcc   c_2,t_1,c_2
        rd      %y,t_2          !=
        addxcc  c_3,t_2,c_3
        addx    c_1,%g0,c_1
        addcc   c_2,t_1,c_2
        addxcc  c_3,t_2,c_3     !=
        addx    c_1,%g0,c_1
        ld      ap(5),a_5
        umul    a_2,a_2,t_1     !sqr_add_c(a,2,c2,c3,c1);
        addcc   c_2,t_1,c_2     !=
        rd      %y,t_2
        addxcc  c_3,t_2,c_3
        st      c_2,rp(4)       !r[4]=c2;
        addx    c_1,%g0,c_1     !=

        umul    a_0,a_5,t_1     !sqr_add_c2(a,5,0,c3,c1,c2);
        addcc   c_3,t_1,c_3
        rd      %y,t_2
        addxcc  c_1,t_2,c_1     !=
        addx    %g0,%g0,c_2
        addcc   c_3,t_1,c_3
        addxcc  c_1,t_2,c_1
        addx    c_2,%g0,c_2     !=
        umul    a_1,a_4,t_1     !sqr_add_c2(a,4,1,c3,c1,c2);
        addcc   c_3,t_1,c_3
        rd      %y,t_2
        addxcc  c_1,t_2,c_1     !=
        addx    c_2,%g0,c_2
        addcc   c_3,t_1,c_3
        addxcc  c_1,t_2,c_1
        addx    c_2,%g0,c_2     !=
        ld      ap(6),a_6
        umul    a_2,a_3,t_1     !sqr_add_c2(a,3,2,c3,c1,c2);
        addcc   c_3,t_1,c_3
        rd      %y,t_2          !=
        addxcc  c_1,t_2,c_1
        addx    c_2,%g0,c_2
        addcc   c_3,t_1,c_3
        addxcc  c_1,t_2,c_1     !=
        addx    c_2,%g0,c_2
        st      c_3,rp(5)       !r[5]=c3;

        umul    a_6,a_0,t_1     !sqr_add_c2(a,6,0,c1,c2,c3);
        addcc   c_1,t_1,c_1     !=
        rd      %y,t_2
        addxcc  c_2,t_2,c_2
        addx    %g0,%g0,c_3
        addcc   c_1,t_1,c_1     !=
        addxcc  c_2,t_2,c_2
        addx    c_3,%g0,c_3
        umul    a_5,a_1,t_1     !sqr_add_c2(a,5,1,c1,c2,c3);
        addcc   c_1,t_1,c_1     !=
        rd      %y,t_2
        addxcc  c_2,t_2,c_2
        addx    c_3,%g0,c_3
        addcc   c_1,t_1,c_1     !=
        addxcc  c_2,t_2,c_2
        addx    c_3,%g0,c_3
        umul    a_4,a_2,t_1     !sqr_add_c2(a,4,2,c1,c2,c3);
        addcc   c_1,t_1,c_1     !=
        rd      %y,t_2
        addxcc  c_2,t_2,c_2
        addx    c_3,%g0,c_3
        addcc   c_1,t_1,c_1     !=
        addxcc  c_2,t_2,c_2
        addx    c_3,%g0,c_3
        ld      ap(7),a_7
        umul    a_3,a_3,t_1     !=!sqr_add_c(a,3,c1,c2,c3);
        addcc   c_1,t_1,c_1
        rd      %y,t_2
        addxcc  c_2,t_2,c_2
        addx    c_3,%g0,c_3     !=
        st      c_1,rp(6)       !r[6]=c1;

        umul    a_0,a_7,t_1     !sqr_add_c2(a,7,0,c2,c3,c1);
        addcc   c_2,t_1,c_2
        rd      %y,t_2          !=
        addxcc  c_3,t_2,c_3
        addx    %g0,%g0,c_1
        addcc   c_2,t_1,c_2
        addxcc  c_3,t_2,c_3     !=
        addx    c_1,%g0,c_1
        umul    a_1,a_6,t_1     !sqr_add_c2(a,6,1,c2,c3,c1);
        addcc   c_2,t_1,c_2
        rd      %y,t_2          !=
        addxcc  c_3,t_2,c_3
        addx    c_1,%g0,c_1
        addcc   c_2,t_1,c_2
        addxcc  c_3,t_2,c_3     !=
        addx    c_1,%g0,c_1
        umul    a_2,a_5,t_1     !sqr_add_c2(a,5,2,c2,c3,c1);
        addcc   c_2,t_1,c_2
        rd      %y,t_2          !=
        addxcc  c_3,t_2,c_3
        addx    c_1,%g0,c_1
        addcc   c_2,t_1,c_2
        addxcc  c_3,t_2,c_3     !=
        addx    c_1,%g0,c_1
        umul    a_3,a_4,t_1     !sqr_add_c2(a,4,3,c2,c3,c1);
        addcc   c_2,t_1,c_2
        rd      %y,t_2          !=
        addxcc  c_3,t_2,c_3
        addx    c_1,%g0,c_1
        addcc   c_2,t_1,c_2
        addxcc  c_3,t_2,c_3     !=
        addx    c_1,%g0,c_1
        st      c_2,rp(7)       !r[7]=c2;

        umul    a_7,a_1,t_1     !sqr_add_c2(a,7,1,c3,c1,c2);
        addcc   c_3,t_1,c_3     !=
        rd      %y,t_2
        addxcc  c_1,t_2,c_1
        addx    %g0,%g0,c_2
        addcc   c_3,t_1,c_3     !=
        addxcc  c_1,t_2,c_1
        addx    c_2,%g0,c_2
        umul    a_6,a_2,t_1     !sqr_add_c2(a,6,2,c3,c1,c2);
        addcc   c_3,t_1,c_3     !=
        rd      %y,t_2
        addxcc  c_1,t_2,c_1
        addx    c_2,%g0,c_2
        addcc   c_3,t_1,c_3     !=
        addxcc  c_1,t_2,c_1
        addx    c_2,%g0,c_2
        umul    a_5,a_3,t_1     !sqr_add_c2(a,5,3,c3,c1,c2);
        addcc   c_3,t_1,c_3     !=
        rd      %y,t_2
        addxcc  c_1,t_2,c_1
        addx    c_2,%g0,c_2
        addcc   c_3,t_1,c_3     !=
        addxcc  c_1,t_2,c_1
        addx    c_2,%g0,c_2
        umul    a_4,a_4,t_1     !sqr_add_c(a,4,c3,c1,c2);
        addcc   c_3,t_1,c_3     !=
        rd      %y,t_2
        addxcc  c_1,t_2,c_1
        st      c_3,rp(8)       !r[8]=c3;
        addx    c_2,%g0,c_2     !=

        umul    a_2,a_7,t_1     !sqr_add_c2(a,7,2,c1,c2,c3);
        addcc   c_1,t_1,c_1
        rd      %y,t_2
        addxcc  c_2,t_2,c_2     !=
        addx    %g0,%g0,c_3
        addcc   c_1,t_1,c_1
        addxcc  c_2,t_2,c_2
        addx    c_3,%g0,c_3     !=
        umul    a_3,a_6,t_1     !sqr_add_c2(a,6,3,c1,c2,c3);
        addcc   c_1,t_1,c_1
        rd      %y,t_2
        addxcc  c_2,t_2,c_2     !=
        addx    c_3,%g0,c_3
        addcc   c_1,t_1,c_1
        addxcc  c_2,t_2,c_2
        addx    c_3,%g0,c_3     !=
        umul    a_4,a_5,t_1     !sqr_add_c2(a,5,4,c1,c2,c3);
        addcc   c_1,t_1,c_1
        rd      %y,t_2
        addxcc  c_2,t_2,c_2     !=
        addx    c_3,%g0,c_3
        addcc   c_1,t_1,c_1
        addxcc  c_2,t_2,c_2
        addx    c_3,%g0,c_3     !=
        st      c_1,rp(9)       !r[9]=c1;

        umul    a_7,a_3,t_1     !sqr_add_c2(a,7,3,c2,c3,c1);
        addcc   c_2,t_1,c_2
        rd      %y,t_2          !=
        addxcc  c_3,t_2,c_3
        addx    %g0,%g0,c_1
        addcc   c_2,t_1,c_2
        addxcc  c_3,t_2,c_3     !=
        addx    c_1,%g0,c_1
        umul    a_6,a_4,t_1     !sqr_add_c2(a,6,4,c2,c3,c1);
        addcc   c_2,t_1,c_2
        rd      %y,t_2          !=
        addxcc  c_3,t_2,c_3
        addx    c_1,%g0,c_1
        addcc   c_2,t_1,c_2
        addxcc  c_3,t_2,c_3     !=
        addx    c_1,%g0,c_1
        umul    a_5,a_5,t_1     !sqr_add_c(a,5,c2,c3,c1);
        addcc   c_2,t_1,c_2
        rd      %y,t_2          !=
        addxcc  c_3,t_2,c_3
        addx    c_1,%g0,c_1
        st      c_2,rp(10)      !r[10]=c2;

        umul    a_4,a_7,t_1     !=!sqr_add_c2(a,7,4,c3,c1,c2);
        addcc   c_3,t_1,c_3
        rd      %y,t_2
        addxcc  c_1,t_2,c_1
        addx    %g0,%g0,c_2     !=
        addcc   c_3,t_1,c_3
        addxcc  c_1,t_2,c_1
        addx    c_2,%g0,c_2
        umul    a_5,a_6,t_1     !=!sqr_add_c2(a,6,5,c3,c1,c2);
        addcc   c_3,t_1,c_3
        rd      %y,t_2
        addxcc  c_1,t_2,c_1
        addx    c_2,%g0,c_2     !=
        addcc   c_3,t_1,c_3
        addxcc  c_1,t_2,c_1
        st      c_3,rp(11)      !r[11]=c3;
        addx    c_2,%g0,c_2     !=

        umul    a_7,a_5,t_1     !sqr_add_c2(a,7,5,c1,c2,c3);
        addcc   c_1,t_1,c_1
        rd      %y,t_2
        addxcc  c_2,t_2,c_2     !=
        addx    %g0,%g0,c_3
        addcc   c_1,t_1,c_1
        addxcc  c_2,t_2,c_2
        addx    c_3,%g0,c_3     !=
        umul    a_6,a_6,t_1     !sqr_add_c(a,6,c1,c2,c3);
        addcc   c_1,t_1,c_1
        rd      %y,t_2
        addxcc  c_2,t_2,c_2     !=
        addx    c_3,%g0,c_3
        st      c_1,rp(12)      !r[12]=c1;

        umul    a_6,a_7,t_1     !sqr_add_c2(a,7,6,c2,c3,c1);
        addcc   c_2,t_1,c_2     !=
        rd      %y,t_2
        addxcc  c_3,t_2,c_3
        addx    %g0,%g0,c_1
        addcc   c_2,t_1,c_2     !=
        addxcc  c_3,t_2,c_3
        st      c_2,rp(13)      !r[13]=c2;
        addx    c_1,%g0,c_1     !=

        umul    a_7,a_7,t_1     !sqr_add_c(a,7,c3,c1,c2);
        addcc   c_3,t_1,c_3
        rd      %y,t_2
        addxcc  c_1,t_2,c_1     !=
        st      c_3,rp(14)      !r[14]=c3;
        st      c_1,rp(15)      !r[15]=c1;

        ret
        restore %g0,%g0,%o0

.type   bn_sqr_comba8,#function
.size   bn_sqr_comba8,(.-bn_sqr_comba8)

.align  32

.global bn_sqr_comba4
/*
 * void bn_sqr_comba4(r,a)
 * BN_ULONG *r,*a;
 */
bn_sqr_comba4:
        save    %sp,FRAME_SIZE,%sp
        ld      ap(0),a_0
        umul    a_0,a_0,c_1     !sqr_add_c(a,0,c1,c2,c3);
        ld      ap(1),a_1       !=
        rd      %y,c_2
        st      c_1,rp(0)       !r[0]=c1;

        ld      ap(2),a_2
        umul    a_0,a_1,t_1     !=!sqr_add_c2(a,1,0,c2,c3,c1);
        addcc   c_2,t_1,c_2
        rd      %y,t_2
        addxcc  %g0,t_2,c_3
        addx    %g0,%g0,c_1     !=
        addcc   c_2,t_1,c_2
        addxcc  c_3,t_2,c_3
        addx    c_1,%g0,c_1     !=
        st      c_2,rp(1)       !r[1]=c2;

        umul    a_2,a_0,t_1     !sqr_add_c2(a,2,0,c3,c1,c2);
        addcc   c_3,t_1,c_3
        rd      %y,t_2          !=
        addxcc  c_1,t_2,c_1
        addx    %g0,%g0,c_2
        addcc   c_3,t_1,c_3
        addxcc  c_1,t_2,c_1     !=
        addx    c_2,%g0,c_2
        ld      ap(3),a_3
        umul    a_1,a_1,t_1     !sqr_add_c(a,1,c3,c1,c2);
        addcc   c_3,t_1,c_3     !=
        rd      %y,t_2
        addxcc  c_1,t_2,c_1
        st      c_3,rp(2)       !r[2]=c3;
        addx    c_2,%g0,c_2     !=

        umul    a_0,a_3,t_1     !sqr_add_c2(a,3,0,c1,c2,c3);
        addcc   c_1,t_1,c_1
        rd      %y,t_2
        addxcc  c_2,t_2,c_2     !=
        addx    %g0,%g0,c_3
        addcc   c_1,t_1,c_1
        addxcc  c_2,t_2,c_2
        addx    c_3,%g0,c_3     !=
        umul    a_1,a_2,t_1     !sqr_add_c2(a,2,1,c1,c2,c3);
        addcc   c_1,t_1,c_1
        rd      %y,t_2
        addxcc  c_2,t_2,c_2     !=
        addx    c_3,%g0,c_3
        addcc   c_1,t_1,c_1
        addxcc  c_2,t_2,c_2
        addx    c_3,%g0,c_3     !=
        st      c_1,rp(3)       !r[3]=c1;

        umul    a_3,a_1,t_1     !sqr_add_c2(a,3,1,c2,c3,c1);
        addcc   c_2,t_1,c_2
        rd      %y,t_2          !=
        addxcc  c_3,t_2,c_3
        addx    %g0,%g0,c_1
        addcc   c_2,t_1,c_2
        addxcc  c_3,t_2,c_3     !=
        addx    c_1,%g0,c_1
        umul    a_2,a_2,t_1     !sqr_add_c(a,2,c2,c3,c1);
        addcc   c_2,t_1,c_2
        rd      %y,t_2          !=
        addxcc  c_3,t_2,c_3
        addx    c_1,%g0,c_1
        st      c_2,rp(4)       !r[4]=c2;

        umul    a_2,a_3,t_1     !=!sqr_add_c2(a,3,2,c3,c1,c2);
        addcc   c_3,t_1,c_3
        rd      %y,t_2
        addxcc  c_1,t_2,c_1
        addx    %g0,%g0,c_2     !=
        addcc   c_3,t_1,c_3
        addxcc  c_1,t_2,c_1
        st      c_3,rp(5)       !r[5]=c3;
        addx    c_2,%g0,c_2     !=

        umul    a_3,a_3,t_1     !sqr_add_c(a,3,c1,c2,c3);
        addcc   c_1,t_1,c_1
        rd      %y,t_2
        addxcc  c_2,t_2,c_2     !=
        st      c_1,rp(6)       !r[6]=c1;
        st      c_2,rp(7)       !r[7]=c2;
        
        ret
        restore %g0,%g0,%o0

.type   bn_sqr_comba4,#function
.size   bn_sqr_comba4,(.-bn_sqr_comba4)

.align  32
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