From 422196759f93df249db38619f136cabd5dcf42cd Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?R=C3=A9mi=20Verschelde?= Date: Wed, 12 Oct 2016 23:06:17 +0200 Subject: openssl: Move to a module and split thirdparty lib Same rationale as the previous commits. --- thirdparty/openssl/crypto/bn/asm/x86_64-gcc.c | 638 ++++++++++++++++++++++++++ 1 file changed, 638 insertions(+) create mode 100644 thirdparty/openssl/crypto/bn/asm/x86_64-gcc.c (limited to 'thirdparty/openssl/crypto/bn/asm/x86_64-gcc.c') diff --git a/thirdparty/openssl/crypto/bn/asm/x86_64-gcc.c b/thirdparty/openssl/crypto/bn/asm/x86_64-gcc.c new file mode 100644 index 0000000000..d77dc433d4 --- /dev/null +++ b/thirdparty/openssl/crypto/bn/asm/x86_64-gcc.c @@ -0,0 +1,638 @@ +#include "../bn_lcl.h" +#if !(defined(__GNUC__) && __GNUC__>=2) +# include "../bn_asm.c" /* kind of dirty hack for Sun Studio */ +#else +/*- + * x86_64 BIGNUM accelerator version 0.1, December 2002. + * + * Implemented by Andy Polyakov 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. + * + * Q. Version 0.1? It doesn't sound like Andy, he used to assign real + * versions, like 1.0... + * A. Well, that's because this code is basically a quick-n-dirty + * proof-of-concept hack. As you can see it's implemented with + * inline assembler, which means that you're bound to GCC and that + * there might be enough room for further improvement. + * + * Q. Why inline assembler? + * A. x86_64 features own ABI which I'm not familiar with. This is + * why I decided to let the compiler take care of subroutine + * prologue/epilogue as well as register allocation. For reference. + * Win64 implements different ABI for AMD64, different from Linux. + * + * Q. How much faster does it get? + * A. 'apps/openssl speed rsa dsa' output with no-asm: + * + * sign verify sign/s verify/s + * rsa 512 bits 0.0006s 0.0001s 1683.8 18456.2 + * rsa 1024 bits 0.0028s 0.0002s 356.0 6407.0 + * rsa 2048 bits 0.0172s 0.0005s 58.0 1957.8 + * rsa 4096 bits 0.1155s 0.0018s 8.7 555.6 + * sign verify sign/s verify/s + * dsa 512 bits 0.0005s 0.0006s 2100.8 1768.3 + * dsa 1024 bits 0.0014s 0.0018s 692.3 559.2 + * dsa 2048 bits 0.0049s 0.0061s 204.7 165.0 + * + * 'apps/openssl speed rsa dsa' output with this module: + * + * sign verify sign/s verify/s + * rsa 512 bits 0.0004s 0.0000s 2767.1 33297.9 + * rsa 1024 bits 0.0012s 0.0001s 867.4 14674.7 + * rsa 2048 bits 0.0061s 0.0002s 164.0 5270.0 + * rsa 4096 bits 0.0384s 0.0006s 26.1 1650.8 + * sign verify sign/s verify/s + * dsa 512 bits 0.0002s 0.0003s 4442.2 3786.3 + * dsa 1024 bits 0.0005s 0.0007s 1835.1 1497.4 + * dsa 2048 bits 0.0016s 0.0020s 620.4 504.6 + * + * For the reference. IA-32 assembler implementation performs + * very much like 64-bit code compiled with no-asm on the same + * machine. + */ + +# if defined(_WIN64) || !defined(__LP64__) +# define BN_ULONG unsigned long long +# else +# define BN_ULONG unsigned long +# endif + +# undef mul +# undef mul_add + +/*- + * "m"(a), "+m"(r) is the way to favor DirectPath ยต-code; + * "g"(0) let the compiler to decide where does it + * want to keep the value of zero; + */ +# define mul_add(r,a,word,carry) do { \ + register BN_ULONG high,low; \ + asm ("mulq %3" \ + : "=a"(low),"=d"(high) \ + : "a"(word),"m"(a) \ + : "cc"); \ + asm ("addq %2,%0; adcq %3,%1" \ + : "+r"(carry),"+d"(high)\ + : "a"(low),"g"(0) \ + : "cc"); \ + asm ("addq %2,%0; adcq %3,%1" \ + : "+m"(r),"+d"(high) \ + : "r"(carry),"g"(0) \ + : "cc"); \ + carry=high; \ + } while (0) + +# define mul(r,a,word,carry) do { \ + register BN_ULONG high,low; \ + asm ("mulq %3" \ + : "=a"(low),"=d"(high) \ + : "a"(word),"g"(a) \ + : "cc"); \ + asm ("addq %2,%0; adcq %3,%1" \ + : "+r"(carry),"+d"(high)\ + : "a"(low),"g"(0) \ + : "cc"); \ + (r)=carry, carry=high; \ + } while (0) +# undef sqr +# define sqr(r0,r1,a) \ + asm ("mulq %2" \ + : "=a"(r0),"=d"(r1) \ + : "a"(a) \ + : "cc"); + +BN_ULONG bn_mul_add_words(BN_ULONG *rp, const BN_ULONG *ap, int num, + BN_ULONG w) +{ + BN_ULONG c1 = 0; + + if (num <= 0) + return (c1); + + while (num & ~3) { + mul_add(rp[0], ap[0], w, c1); + mul_add(rp[1], ap[1], w, c1); + mul_add(rp[2], ap[2], w, c1); + mul_add(rp[3], ap[3], w, c1); + ap += 4; + rp += 4; + num -= 4; + } + if (num) { + mul_add(rp[0], ap[0], w, c1); + if (--num == 0) + return c1; + mul_add(rp[1], ap[1], w, c1); + if (--num == 0) + return c1; + mul_add(rp[2], ap[2], w, c1); + return c1; + } + + return (c1); +} + +BN_ULONG bn_mul_words(BN_ULONG *rp, const BN_ULONG *ap, int num, BN_ULONG w) +{ + BN_ULONG c1 = 0; + + if (num <= 0) + return (c1); + + while (num & ~3) { + mul(rp[0], ap[0], w, c1); + mul(rp[1], ap[1], w, c1); + mul(rp[2], ap[2], w, c1); + mul(rp[3], ap[3], w, c1); + ap += 4; + rp += 4; + num -= 4; + } + if (num) { + mul(rp[0], ap[0], w, c1); + if (--num == 0) + return c1; + mul(rp[1], ap[1], w, c1); + if (--num == 0) + return c1; + mul(rp[2], ap[2], w, c1); + } + return (c1); +} + +void bn_sqr_words(BN_ULONG *r, const BN_ULONG *a, int n) +{ + if (n <= 0) + return; + + while (n & ~3) { + sqr(r[0], r[1], a[0]); + sqr(r[2], r[3], a[1]); + sqr(r[4], r[5], a[2]); + sqr(r[6], r[7], a[3]); + a += 4; + r += 8; + n -= 4; + } + if (n) { + sqr(r[0], r[1], a[0]); + if (--n == 0) + return; + sqr(r[2], r[3], a[1]); + if (--n == 0) + return; + sqr(r[4], r[5], a[2]); + } +} + +BN_ULONG bn_div_words(BN_ULONG h, BN_ULONG l, BN_ULONG d) +{ + BN_ULONG ret, waste; + + asm("divq %4":"=a"(ret), "=d"(waste) + : "a"(l), "d"(h), "g"(d) + : "cc"); + + return ret; +} + +BN_ULONG bn_add_words(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp, + int n) +{ + BN_ULONG ret; + size_t i = 0; + + if (n <= 0) + return 0; + + asm volatile (" subq %0,%0 \n" /* clear carry */ + " jmp 1f \n" + ".p2align 4 \n" + "1: movq (%4,%2,8),%0 \n" + " adcq (%5,%2,8),%0 \n" + " movq %0,(%3,%2,8) \n" + " lea 1(%2),%2 \n" + " loop 1b \n" + " sbbq %0,%0 \n":"=&r" (ret), "+c"(n), + "+r"(i) + :"r"(rp), "r"(ap), "r"(bp) + :"cc", "memory"); + + return ret & 1; +} + +# ifndef SIMICS +BN_ULONG bn_sub_words(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp, + int n) +{ + BN_ULONG ret; + size_t i = 0; + + if (n <= 0) + return 0; + + asm volatile (" subq %0,%0 \n" /* clear borrow */ + " jmp 1f \n" + ".p2align 4 \n" + "1: movq (%4,%2,8),%0 \n" + " sbbq (%5,%2,8),%0 \n" + " movq %0,(%3,%2,8) \n" + " lea 1(%2),%2 \n" + " loop 1b \n" + " sbbq %0,%0 \n":"=&r" (ret), "+c"(n), + "+r"(i) + :"r"(rp), "r"(ap), "r"(bp) + :"cc", "memory"); + + return ret & 1; +} +# else +/* Simics 1.4<7 has buggy sbbq:-( */ +# define BN_MASK2 0xffffffffffffffffL +BN_ULONG bn_sub_words(BN_ULONG *r, BN_ULONG *a, BN_ULONG *b, int n) +{ + BN_ULONG t1, t2; + int c = 0; + + if (n <= 0) + return ((BN_ULONG)0); + + for (;;) { + t1 = a[0]; + t2 = b[0]; + r[0] = (t1 - t2 - c) & BN_MASK2; + if (t1 != t2) + c = (t1 < t2); + if (--n <= 0) + break; + + t1 = a[1]; + t2 = b[1]; + r[1] = (t1 - t2 - c) & BN_MASK2; + if (t1 != t2) + c = (t1 < t2); + if (--n <= 0) + break; + + t1 = a[2]; + t2 = b[2]; + r[2] = (t1 - t2 - c) & BN_MASK2; + if (t1 != t2) + c = (t1 < t2); + if (--n <= 0) + break; + + t1 = a[3]; + t2 = b[3]; + r[3] = (t1 - t2 - c) & BN_MASK2; + if (t1 != t2) + c = (t1 < t2); + if (--n <= 0) + break; + + a += 4; + b += 4; + r += 4; + } + return (c); +} +# endif + +/* mul_add_c(a,b,c0,c1,c2) -- c+=a*b for three word number c=(c2,c1,c0) */ +/* mul_add_c2(a,b,c0,c1,c2) -- c+=2*a*b for three word number c=(c2,c1,c0) */ +/* sqr_add_c(a,i,c0,c1,c2) -- c+=a[i]^2 for three word number c=(c2,c1,c0) */ +/* + * sqr_add_c2(a,i,c0,c1,c2) -- c+=2*a[i]*a[j] for three word number + * c=(c2,c1,c0) + */ + +/* + * Keep in mind that carrying into high part of multiplication result + * can not overflow, because it cannot be all-ones. + */ +# if 0 +/* original macros are kept for reference purposes */ +# define mul_add_c(a,b,c0,c1,c2) do { \ + BN_ULONG ta = (a), tb = (b); \ + BN_ULONG lo, hi; \ + BN_UMULT_LOHI(lo,hi,ta,tb); \ + c0 += lo; hi += (c0