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add NO_64BIT flag to normal and fastmath to use a 32 bit accumulator for multiply when 64 bit actually slows it down

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This commit is contained in:
toddouska
2013-03-12 15:52:47 -07:00
parent a4c8d0e76c
commit a868451d72
2 changed files with 13 additions and 4 deletions
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4
cyassl/ctaocrypt/integer.h
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@ -82,9 +82,9 @@ extern "C" {
#ifdef MP_8BIT
typedef unsigned char mp_digit;
typedef unsigned short mp_word;
#elif defined(MP_16BIT)
#elif (defined(MP_16BIT) || defined(NO_64BIT))
typedef unsigned short mp_digit;
typedef unsigned long mp_word;
typedef unsigned int mp_word;
#elif defined(MP_64BIT)
/* for GCC only on supported platforms */
#ifndef CRYPT

13
cyassl/ctaocrypt/tfm.h
View File

@ -54,6 +54,7 @@
#endif
#ifndef NO_64BIT
/* autodetect x86-64 and make sure we are using 64-bit digits with x86-64 asm */
#if defined(__x86_64__)
#if defined(TFM_X86) || defined(TFM_SSE2) || defined(TFM_ARM)
@ -72,6 +73,7 @@
#if defined(__x86_64__) && !defined(FP_64BIT)
#define FP_64BIT
#endif
#endif /* NO_64BIT */
/* try to detect x86-32 */
#if defined(__i386__) && !defined(TFM_SSE2)
@ -214,8 +216,15 @@
typedef signed long long long64;
#endif
#endif
typedef unsigned int fp_digit;
typedef ulong64 fp_word;
#ifndef NO_64BIT
typedef unsigned int fp_digit;
typedef ulong64 fp_word;
#else
/* some procs like coldfire prefer not to place multiply into 64bit type
even though it exists */
typedef unsigned short fp_digit;
typedef unsigned int fp_word;
#endif
#endif
/* # of digits this is */