--- /dev/null
+.ident "s390x.S, version 1.0"
+// ====================================================================
+// Written by Andy Polyakov <appro@fy.chalmers.se> 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.
+// ====================================================================
+
+.text
+
+#define zero %r0
+
+// BN_ULONG bn_mul_add_words(BN_ULONG *r2,BN_ULONG *r3,int r4,BN_ULONG r5);
+.globl bn_mul_add_words
+.type bn_mul_add_words,@function
+.align 4
+bn_mul_add_words:
+ lghi zero,0 // zero = 0
+ la %r1,0(%r2) // put rp aside
+ lghi %r2,0 // i=0;
+ ltgfr %r4,%r4
+ bler %r14 // if (len<=0) return 0;
+
+ stmg %r6,%r10,48(%r15)
+ lghi %r8,0 // carry = 0
+ srag %r10,%r4,2 // cnt=len/4
+ jz .Loop1_madd
+
+.Loop4_madd:
+ lg %r7,0(%r2,%r3) // ap[i]
+ mlgr %r6,%r5 // *=w
+ algr %r7,%r8 // +=carry
+ alcgr %r6,zero
+ alg %r7,0(%r2,%r1) // +=rp[i]
+ alcgr %r6,zero
+ stg %r7,0(%r2,%r1) // rp[i]=
+
+ lg %r9,8(%r2,%r3)
+ mlgr %r8,%r5
+ algr %r9,%r6
+ alcgr %r8,zero
+ alg %r9,8(%r2,%r1)
+ alcgr %r8,zero
+ stg %r9,8(%r2,%r1)
+
+ lg %r7,16(%r2,%r3)
+ mlgr %r6,%r5
+ algr %r7,%r8
+ alcgr %r6,zero
+ alg %r7,16(%r2,%r1)
+ alcgr %r6,zero
+ stg %r7,16(%r2,%r1)
+
+ lg %r9,24(%r2,%r3)
+ mlgr %r8,%r5
+ algr %r9,%r6
+ alcgr %r8,zero
+ alg %r9,24(%r2,%r1)
+ alcgr %r8,zero
+ stg %r9,24(%r2,%r1)
+
+ la %r2,32(%r2) // i+=4
+ brct %r10,.Loop4_madd
+
+ lghi %r10,3
+ nr %r4,%r10 // cnt=len%4
+ jz .Lend_madd
+
+.Loop1_madd:
+ lg %r7,0(%r2,%r3) // ap[i]
+ mlgr %r6,%r5 // *=w
+ algr %r7,%r8 // +=carry
+ alcgr %r6,zero
+ alg %r7,0(%r2,%r1) // +=rp[i]
+ alcgr %r6,zero
+ stg %r7,0(%r2,%r1) // rp[i]=
+
+ lgr %r8,%r6
+ la %r2,8(%r2) // i++
+ brct %r4,.Loop1_madd
+
+.Lend_madd:
+ lgr %r2,%r8
+ lmg %r6,%r10,48(%r15)
+ br %r14
+.size bn_mul_add_words,.-bn_mul_add_words
+
+// BN_ULONG bn_mul_words(BN_ULONG *r2,BN_ULONG *r3,int r4,BN_ULONG r5);
+.globl bn_mul_words
+.type bn_mul_words,@function
+.align 4
+bn_mul_words:
+ lghi zero,0 // zero = 0
+ la %r1,0(%r2) // put rp aside
+ lghi %r2,0 // i=0;
+ ltgfr %r4,%r4
+ bler %r14 // if (len<=0) return 0;
+
+ stmg %r6,%r10,48(%r15)
+ lghi %r8,0 // carry = 0
+ srag %r10,%r4,2 // cnt=len/4
+ jz .Loop1_mul
+
+.Loop4_mul:
+ lg %r7,0(%r2,%r3) // ap[i]
+ mlgr %r6,%r5 // *=w
+ algr %r7,%r8 // +=carry
+ alcgr %r6,zero
+ stg %r7,0(%r2,%r1) // rp[i]=
+
+ lg %r9,8(%r2,%r3)
+ mlgr %r8,%r5
+ algr %r9,%r6
+ alcgr %r8,zero
+ stg %r9,8(%r2,%r1)
+
+ lg %r7,16(%r2,%r3)
+ mlgr %r6,%r5
+ algr %r7,%r8
+ alcgr %r6,zero
+ stg %r7,16(%r2,%r1)
+
+ lg %r9,24(%r2,%r3)
+ mlgr %r8,%r5
+ algr %r9,%r6
+ alcgr %r8,zero
+ stg %r9,24(%r2,%r1)
+
+ la %r2,32(%r2) // i+=4
+ brct %r10,.Loop4_mul
+
+ lghi %r10,3
+ nr %r4,%r10 // cnt=len%4
+ jz .Lend_mul
+
+.Loop1_mul:
+ lg %r7,0(%r2,%r3) // ap[i]
+ mlgr %r6,%r5 // *=w
+ algr %r7,%r8 // +=carry
+ alcgr %r6,zero
+ stg %r7,0(%r2,%r1) // rp[i]=
+
+ lgr %r8,%r6
+ la %r2,8(%r2) // i++
+ brct %r4,.Loop1_mul
+
+.Lend_mul:
+ lgr %r2,%r8
+ lmg %r6,%r10,48(%r15)
+ br %r14
+.size bn_mul_words,.-bn_mul_words
+
+// void bn_sqr_words(BN_ULONG *r2,BN_ULONG *r2,int r4)
+.globl bn_sqr_words
+.type bn_sqr_words,@function
+.align 4
+bn_sqr_words:
+ ltgfr %r4,%r4
+ bler %r14
+
+ stmg %r6,%r7,48(%r15)
+ srag %r1,%r4,2 // cnt=len/4
+ jz .Loop1_sqr
+
+.Loop4_sqr:
+ lg %r7,0(%r3)
+ mlgr %r6,%r7
+ stg %r7,0(%r2)
+ stg %r6,8(%r2)
+
+ lg %r7,8(%r3)
+ mlgr %r6,%r7
+ stg %r7,16(%r2)
+ stg %r6,24(%r2)
+
+ lg %r7,16(%r3)
+ mlgr %r6,%r7
+ stg %r7,32(%r2)
+ stg %r6,40(%r2)
+
+ lg %r7,24(%r3)
+ mlgr %r6,%r7
+ stg %r7,48(%r2)
+ stg %r6,56(%r2)
+
+ la %r3,32(%r3)
+ la %r2,64(%r2)
+ brct %r1,.Loop4_sqr
+
+ lghi %r1,3
+ nr %r4,%r1 // cnt=len%4
+ jz .Lend_sqr
+
+.Loop1_sqr:
+ lg %r7,0(%r3)
+ mlgr %r6,%r7
+ stg %r7,0(%r2)
+ stg %r6,8(%r2)
+
+ la %r3,8(%r3)
+ la %r2,16(%r2)
+ brct %r4,.Loop1_sqr
+
+.Lend_sqr:
+ lmg %r6,%r7,48(%r15)
+ br %r14
+.size bn_sqr_words,.-bn_sqr_words
+
+// BN_ULONG bn_div_words(BN_ULONG h,BN_ULONG l,BN_ULONG d);
+.globl bn_div_words
+.type bn_div_words,@function
+.align 4
+bn_div_words:
+ dlgr %r2,%r4
+ lgr %r2,%r3
+ br %r14
+.size bn_div_words,.-bn_div_words
+
+// BN_ULONG bn_add_words(BN_ULONG *r2,BN_ULONG *r3,BN_ULONG *r4,int r5);
+.globl bn_add_words
+.type bn_add_words,@function
+.align 4
+bn_add_words:
+ la %r1,0(%r2) // put rp aside
+ lghi %r2,0 // i=0
+ ltgfr %r5,%r5
+ bler %r14 // if (len<=0) return 0;
+
+ stg %r6,48(%r15)
+ lghi %r6,3
+ nr %r6,%r5 // len%4
+ sra %r5,2 // len/4, use sra because it sets condition code
+ jz .Loop1_add // carry is incidentally cleared if branch taken
+ algr %r2,%r2 // clear carry
+
+.Loop4_add:
+ lg %r0,0(%r2,%r3)
+ alcg %r0,0(%r2,%r4)
+ stg %r0,0(%r2,%r1)
+ lg %r0,8(%r2,%r3)
+ alcg %r0,8(%r2,%r4)
+ stg %r0,8(%r2,%r1)
+ lg %r0,16(%r2,%r3)
+ alcg %r0,16(%r2,%r4)
+ stg %r0,16(%r2,%r1)
+ lg %r0,24(%r2,%r3)
+ alcg %r0,24(%r2,%r4)
+ stg %r0,24(%r2,%r1)
+
+ la %r2,32(%r2) // i+=4
+ brct %r5,.Loop4_add
+
+ la %r6,1(%r6) // see if len%4 is zero ...
+ brct %r6,.Loop1_add // without touching condition code:-)
+
+.Lexit_add:
+ lghi %r2,0
+ alcgr %r2,%r2
+ lg %r6,48(%r15)
+ br %r14
+
+.Loop1_add:
+ lg %r0,0(%r2,%r3)
+ alcg %r0,0(%r2,%r4)
+ stg %r0,0(%r2,%r1)
+
+ la %r2,8(%r2) // i++
+ brct %r6,.Loop1_add
+
+ j .Lexit_add
+.size bn_add_words,.-bn_add_words
+
+// BN_ULONG bn_sub_words(BN_ULONG *r2,BN_ULONG *r3,BN_ULONG *r4,int r5);
+.globl bn_sub_words
+.type bn_sub_words,@function
+.align 4
+bn_sub_words:
+ la %r1,0(%r2) // put rp aside
+ lghi %r2,0 // i=0
+ ltgfr %r5,%r5
+ bler %r14 // if (len<=0) return 0;
+
+ stg %r6,48(%r15)
+ lghi %r6,3
+ nr %r6,%r5 // len%4
+ sra %r5,2 // len/4, use sra because it sets condition code
+ jnz .Loop4_sub // borrow is incidentally cleared if branch taken
+ slgr %r2,%r2 // clear borrow
+
+.Loop1_sub:
+ lg %r0,0(%r2,%r3)
+ slbg %r0,0(%r2,%r4)
+ stg %r0,0(%r2,%r1)
+
+ la %r2,8(%r2) // i++
+ brct %r6,.Loop1_sub
+ j .Lexit_sub
+
+.Loop4_sub:
+ lg %r0,0(%r2,%r3)
+ slbg %r0,0(%r2,%r4)
+ stg %r0,0(%r2,%r1)
+ lg %r0,8(%r2,%r3)
+ slbg %r0,8(%r2,%r4)
+ stg %r0,8(%r2,%r1)
+ lg %r0,16(%r2,%r3)
+ slbg %r0,16(%r2,%r4)
+ stg %r0,16(%r2,%r1)
+ lg %r0,24(%r2,%r3)
+ slbg %r0,24(%r2,%r4)
+ stg %r0,24(%r2,%r1)
+
+ la %r2,32(%r2) // i+=4
+ brct %r5,.Loop4_sub
+
+ la %r6,1(%r6) // see if len%4 is zero ...
+ brct %r6,.Loop1_sub // without touching condition code:-)
+
+.Lexit_sub:
+ lghi %r2,0
+ slbgr %r2,%r2
+ lcgr %r2,%r2
+ lg %r6,48(%r15)
+ br %r14
+.size bn_sub_words,.-bn_sub_words
+
+#define c1 %r1
+#define c2 %r5
+#define c3 %r8
+
+#define mul_add_c(ai,bi,c1,c2,c3) \
+ lg %r7,ai*8(%r3); \
+ mlg %r6,bi*8(%r4); \
+ algr c1,%r7; \
+ alcgr c2,%r6; \
+ alcgr c3,zero
+
+// void bn_mul_comba8(BN_ULONG *r2,BN_ULONG *r3,BN_ULONG *r4);
+.globl bn_mul_comba8
+.type bn_mul_comba8,@function
+.align 4
+bn_mul_comba8:
+ stmg %r6,%r8,48(%r15)
+
+ lghi c1,0
+ lghi c2,0
+ lghi c3,0
+ lghi zero,0
+
+ mul_add_c(0,0,c1,c2,c3);
+ stg c1,0*8(%r2)
+ lghi c1,0
+
+ mul_add_c(0,1,c2,c3,c1);
+ mul_add_c(1,0,c2,c3,c1);
+ stg c2,1*8(%r2)
+ lghi c2,0
+
+ mul_add_c(2,0,c3,c1,c2);
+ mul_add_c(1,1,c3,c1,c2);
+ mul_add_c(0,2,c3,c1,c2);
+ stg c3,2*8(%r2)
+ lghi c3,0
+
+ mul_add_c(0,3,c1,c2,c3);
+ mul_add_c(1,2,c1,c2,c3);
+ mul_add_c(2,1,c1,c2,c3);
+ mul_add_c(3,0,c1,c2,c3);
+ stg c1,3*8(%r2)
+ lghi c1,0
+
+ mul_add_c(4,0,c2,c3,c1);
+ mul_add_c(3,1,c2,c3,c1);
+ mul_add_c(2,2,c2,c3,c1);
+ mul_add_c(1,3,c2,c3,c1);
+ mul_add_c(0,4,c2,c3,c1);
+ stg c2,4*8(%r2)
+ lghi c2,0
+
+ mul_add_c(0,5,c3,c1,c2);
+ mul_add_c(1,4,c3,c1,c2);
+ mul_add_c(2,3,c3,c1,c2);
+ mul_add_c(3,2,c3,c1,c2);
+ mul_add_c(4,1,c3,c1,c2);
+ mul_add_c(5,0,c3,c1,c2);
+ stg c3,5*8(%r2)
+ lghi c3,0
+
+ mul_add_c(6,0,c1,c2,c3);
+ mul_add_c(5,1,c1,c2,c3);
+ mul_add_c(4,2,c1,c2,c3);
+ mul_add_c(3,3,c1,c2,c3);
+ mul_add_c(2,4,c1,c2,c3);
+ mul_add_c(1,5,c1,c2,c3);
+ mul_add_c(0,6,c1,c2,c3);
+ stg c1,6*8(%r2)
+ lghi c1,0
+
+ mul_add_c(0,7,c2,c3,c1);
+ mul_add_c(1,6,c2,c3,c1);
+ mul_add_c(2,5,c2,c3,c1);
+ mul_add_c(3,4,c2,c3,c1);
+ mul_add_c(4,3,c2,c3,c1);
+ mul_add_c(5,2,c2,c3,c1);
+ mul_add_c(6,1,c2,c3,c1);
+ mul_add_c(7,0,c2,c3,c1);
+ stg c2,7*8(%r2)
+ lghi c2,0
+
+ mul_add_c(7,1,c3,c1,c2);
+ mul_add_c(6,2,c3,c1,c2);
+ mul_add_c(5,3,c3,c1,c2);
+ mul_add_c(4,4,c3,c1,c2);
+ mul_add_c(3,5,c3,c1,c2);
+ mul_add_c(2,6,c3,c1,c2);
+ mul_add_c(1,7,c3,c1,c2);
+ stg c3,8*8(%r2)
+ lghi c3,0
+
+ mul_add_c(2,7,c1,c2,c3);
+ mul_add_c(3,6,c1,c2,c3);
+ mul_add_c(4,5,c1,c2,c3);
+ mul_add_c(5,4,c1,c2,c3);
+ mul_add_c(6,3,c1,c2,c3);
+ mul_add_c(7,2,c1,c2,c3);
+ stg c1,9*8(%r2)
+ lghi c1,0
+
+ mul_add_c(7,3,c2,c3,c1);
+ mul_add_c(6,4,c2,c3,c1);
+ mul_add_c(5,5,c2,c3,c1);
+ mul_add_c(4,6,c2,c3,c1);
+ mul_add_c(3,7,c2,c3,c1);
+ stg c2,10*8(%r2)
+ lghi c2,0
+
+ mul_add_c(4,7,c3,c1,c2);
+ mul_add_c(5,6,c3,c1,c2);
+ mul_add_c(6,5,c3,c1,c2);
+ mul_add_c(7,4,c3,c1,c2);
+ stg c3,11*8(%r2)
+ lghi c3,0
+
+ mul_add_c(7,5,c1,c2,c3);
+ mul_add_c(6,6,c1,c2,c3);
+ mul_add_c(5,7,c1,c2,c3);
+ stg c1,12*8(%r2)
+ lghi c1,0
+
+
+ mul_add_c(6,7,c2,c3,c1);
+ mul_add_c(7,6,c2,c3,c1);
+ stg c2,13*8(%r2)
+ lghi c2,0
+
+ mul_add_c(7,7,c3,c1,c2);
+ stg c3,14*8(%r2)
+ stg c1,15*8(%r2)
+
+ lmg %r6,%r8,48(%r15)
+ br %r14
+.size bn_mul_comba8,.-bn_mul_comba8
+
+// void bn_mul_comba4(BN_ULONG *r2,BN_ULONG *r3,BN_ULONG *r4);
+.globl bn_mul_comba4
+.type bn_mul_comba4,@function
+.align 4
+bn_mul_comba4:
+ stmg %r6,%r8,48(%r15)
+
+ lghi c1,0
+ lghi c2,0
+ lghi c3,0
+ lghi zero,0
+
+ mul_add_c(0,0,c1,c2,c3);
+ stg c1,0*8(%r3)
+ lghi c1,0
+
+ mul_add_c(0,1,c2,c3,c1);
+ mul_add_c(1,0,c2,c3,c1);
+ stg c2,1*8(%r2)
+ lghi c2,0
+
+ mul_add_c(2,0,c3,c1,c2);
+ mul_add_c(1,1,c3,c1,c2);
+ mul_add_c(0,2,c3,c1,c2);
+ stg c3,2*8(%r2)
+ lghi c3,0
+
+ mul_add_c(0,3,c1,c2,c3);
+ mul_add_c(1,2,c1,c2,c3);
+ mul_add_c(2,1,c1,c2,c3);
+ mul_add_c(3,0,c1,c2,c3);
+ stg c1,3*8(%r2)
+ lghi c1,0
+
+ mul_add_c(3,1,c2,c3,c1);
+ mul_add_c(2,2,c2,c3,c1);
+ mul_add_c(1,3,c2,c3,c1);
+ stg c2,4*8(%r2)
+ lghi c2,0
+
+ mul_add_c(2,3,c3,c1,c2);
+ mul_add_c(3,2,c3,c1,c2);
+ stg c3,5*8(%r2)
+ lghi c3,0
+
+ mul_add_c(3,3,c1,c2,c3);
+ stg c1,6*8(%r2)
+ stg c2,7*8(%r2)
+
+ stmg %r6,%r8,48(%r15)
+ br %r14
+.size bn_mul_comba4,.-bn_mul_comba4
+
+#define sqr_add_c(ai,c1,c2,c3) \
+ lg %r7,ai*8(%r3); \
+ mlgr %r6,%r7; \
+ algr c1,%r7; \
+ alcgr c2,%r6; \
+ alcgr c3,zero
+
+#define sqr_add_c2(ai,aj,c1,c2,c3) \
+ lg %r7,ai*8(%r3); \
+ mlg %r6,aj*8(%r3); \
+ algr c1,%r7; \
+ alcgr c2,%r6; \
+ alcgr c3,zero; \
+ algr c1,%r7; \
+ alcgr c2,%r6; \
+ alcgr c3,zero
+
+// void bn_sqr_comba8(BN_ULONG *r2,BN_ULONG *r3);
+.globl bn_sqr_comba8
+.type bn_sqr_comba8,@function
+.align 4
+bn_sqr_comba8:
+ stmg %r6,%r8,48(%r15)
+
+ lghi c1,0
+ lghi c2,0
+ lghi c3,0
+ lghi zero,0
+
+ sqr_add_c(0,c1,c2,c3);
+ stg c1,0*8(%r2)
+ lghi c1,0
+
+ sqr_add_c2(1,0,c2,c3,c1);
+ stg c2,1*8(%r2)
+ lghi c2,0
+
+ sqr_add_c(1,c3,c1,c2);
+ sqr_add_c2(2,0,c3,c1,c2);
+ stg c3,2*8(%r2)
+ lghi c3,0
+
+ sqr_add_c2(3,0,c1,c2,c3);
+ sqr_add_c2(2,1,c1,c2,c3);
+ stg c1,3*8(%r2)
+ lghi c1,0
+
+ sqr_add_c(2,c2,c3,c1);
+ sqr_add_c2(3,1,c2,c3,c1);
+ sqr_add_c2(4,0,c2,c3,c1);
+ stg c2,4*8(%r2)
+ lghi c2,0
+
+ sqr_add_c2(5,0,c3,c1,c2);
+ sqr_add_c2(4,1,c3,c1,c2);
+ sqr_add_c2(3,2,c3,c1,c2);
+ stg c3,5*8(%r2)
+ lghi c3,0
+
+ sqr_add_c(3,c1,c2,c3);
+ sqr_add_c2(4,2,c1,c2,c3);
+ sqr_add_c2(5,1,c1,c2,c3);
+ sqr_add_c2(6,0,c1,c2,c3);
+ stg c1,6*8(%r2)
+ lghi c1,0
+
+ sqr_add_c2(7,0,c2,c3,c1);
+ sqr_add_c2(6,1,c2,c3,c1);
+ sqr_add_c2(5,2,c2,c3,c1);
+ sqr_add_c2(4,3,c2,c3,c1);
+ stg c2,7*8(%r2)
+ lghi c2,0
+
+ sqr_add_c(4,c3,c1,c2);
+ sqr_add_c2(5,3,c3,c1,c2);
+ sqr_add_c2(6,2,c3,c1,c2);
+ sqr_add_c2(7,1,c3,c1,c2);
+ stg c3,8*8(%r2)
+ lghi c3,0
+
+ sqr_add_c2(7,2,c1,c2,c3);
+ sqr_add_c2(6,3,c1,c2,c3);
+ sqr_add_c2(5,4,c1,c2,c3);
+ stg c1,9*8(%r2)
+ lghi c1,0
+
+ sqr_add_c(5,c2,c3,c1);
+ sqr_add_c2(6,4,c2,c3,c1);
+ sqr_add_c2(7,3,c2,c3,c1);
+ stg c2,10*8(%r2)
+ lghi c2,0
+
+ sqr_add_c2(7,4,c3,c1,c2);
+ sqr_add_c2(6,5,c3,c1,c2);
+ stg c3,11*8(%r2)
+ lghi c3,0
+
+ sqr_add_c(6,c1,c2,c3);
+ sqr_add_c2(7,5,c1,c2,c3);
+ stg c1,12*8(%r2)
+ lghi c1,0
+
+ sqr_add_c2(7,6,c2,c3,c1);
+ stg c2,13*8(%r2)
+ lghi c2,0
+
+ sqr_add_c(7,c3,c1,c2);
+ stg c3,14*8(%r2)
+ stg c1,15*8(%r2)
+
+ lmg %r6,%r8,48(%r15)
+ br %r14
+.size bn_sqr_comba8,.-bn_sqr_comba8
+
+// void bn_sqr_comba4(BN_ULONG *r2,BN_ULONG *r3);
+.globl bn_sqr_comba4
+.type bn_sqr_comba4,@function
+.align 4
+bn_sqr_comba4:
+ stmg %r6,%r8,48(%r15)
+
+ lghi c1,0
+ lghi c2,0
+ lghi c3,0
+ lghi zero,0
+
+ sqr_add_c(0,c1,c2,c3);
+ stg c1,0*8(%r2)
+ lghi c1,0
+
+ sqr_add_c2(1,0,c2,c3,c1);
+ stg c2,1*8(%r2)
+ lghi c2,0
+
+ sqr_add_c(1,c3,c1,c2);
+ sqr_add_c2(2,0,c3,c1,c2);
+ stg c3,2*8(%r2)
+ lghi c3,0
+
+ sqr_add_c2(3,0,c1,c2,c3);
+ sqr_add_c2(2,1,c1,c2,c3);
+ stg c1,3*8(%r2)
+ lghi c1,0
+
+ sqr_add_c(2,c2,c3,c1);
+ sqr_add_c2(3,1,c2,c3,c1);
+ stg c2,4*8(%r2)
+ lghi c2,0
+
+ sqr_add_c2(3,2,c3,c1,c2);
+ stg c3,5*8(%r2)
+ lghi c3,0
+
+ sqr_add_c(3,c1,c2,c3);
+ stg c1,6*8(%r2)
+ stg c2,7*8(%r2)
+
+ lmg %r6,%r8,48(%r15)
+ br %r14
+.size bn_sqr_comba4,.-bn_sqr_comba4
projects / oweals / openssl.git / commitdiff