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comparison tomsfastmath/src/mul/fp_mul_comba.c @ 645:8622ee48fab5 dropbear-tfm

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- Work around broken asm constraint behaviour on 32bit x86 OS X
author Matt Johnston <matt@ucc.asn.au>
date Wed, 30 Nov 2011 22:27:26 +0800
parents a362b62d38b2
children
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644:ff5cc422ba40 645:8622ee48fab5
45 /* anything you need at the end */ 45 /* anything you need at the end */
46 #define COMBA_FINI 46 #define COMBA_FINI
47 47
48 /* this should multiply i and j */ 48 /* this should multiply i and j */
49 #define MULADD(i, j) \ 49 #define MULADD(i, j) \
50 do { fp_digit ti = (i); \
51 fp_digit tj = (j); \
50 asm( \ 52 asm( \
51 "movl %6,%%eax \n\t" \ 53 "movl %6,%%eax \n\t" \
52 "mull %7 \n\t" \ 54 "mull %7 \n\t" \
53 "addl %%eax,%0 \n\t" \ 55 "addl %%eax,%0 \n\t" \
54 "adcl %%edx,%1 \n\t" \ 56 "adcl %%edx,%1 \n\t" \
55 "adcl $0,%2 \n\t" \ 57 "adcl $0,%2 \n\t" \
56 :"=r"(c0), "=r"(c1), "=r"(c2): "0"(c0), "1"(c1), "2"(c2), "m"(i), "m"(j) :"%eax","%edx","%cc"); 58 :"=r"(c0), "=r"(c1), "=r"(c2): "0"(c0), "1"(c1), "2"(c2), "m"(ti), "m"(tj) :"%eax","%edx","%cc"); } while (0);
57 59
58 #elif defined(TFM_X86_64) 60 #elif defined(TFM_X86_64)
59 /* x86-64 optimized */ 61 /* x86-64 optimized */
60 62
61 /* anything you need at the start */ 63 /* anything you need at the start */