blob: 2c1929779892b6e29f228467c0625a46cff830ee [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001#include <linux/types.h>
2#include <linux/errno.h>
3#include <asm/uaccess.h>
4
Kumar Galad2b194e2008-06-04 02:59:29 -05005#include <asm/sfp-machine.h>
6#include <math-emu/soft-fp.h>
7#include <math-emu/double.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -07008
9int
10fmul(void *frD, void *frA, void *frB)
11{
12 FP_DECL_D(A);
13 FP_DECL_D(B);
14 FP_DECL_D(R);
Kumar Galad2b194e2008-06-04 02:59:29 -050015 FP_DECL_EX;
Linus Torvalds1da177e2005-04-16 15:20:36 -070016
17#ifdef DEBUG
Harvey Harrisone48b1b42008-03-29 08:21:07 +110018 printk("%s: %p %p %p\n", __func__, frD, frA, frB);
Linus Torvalds1da177e2005-04-16 15:20:36 -070019#endif
20
Kumar Galad2b194e2008-06-04 02:59:29 -050021 FP_UNPACK_DP(A, frA);
22 FP_UNPACK_DP(B, frB);
Linus Torvalds1da177e2005-04-16 15:20:36 -070023
24#ifdef DEBUG
25 printk("A: %ld %lu %lu %ld (%ld) [%08lx.%08lx %lx]\n",
26 A_s, A_f1, A_f0, A_e, A_c, A_f1, A_f0, A_e + 1023);
27 printk("B: %ld %lu %lu %ld (%ld) [%08lx.%08lx %lx]\n",
28 B_s, B_f1, B_f0, B_e, B_c, B_f1, B_f0, B_e + 1023);
29#endif
30
31 if ((A_c == FP_CLS_INF && B_c == FP_CLS_ZERO) ||
32 (A_c == FP_CLS_ZERO && B_c == FP_CLS_INF))
Liu Yu033b8a32008-10-28 11:50:20 +080033 FP_SET_EXCEPTION(EFLAG_VXIMZ);
Linus Torvalds1da177e2005-04-16 15:20:36 -070034
35 FP_MUL_D(R, A, B);
36
37#ifdef DEBUG
38 printk("D: %ld %lu %lu %ld (%ld) [%08lx.%08lx %lx]\n",
39 R_s, R_f1, R_f0, R_e, R_c, R_f1, R_f0, R_e + 1023);
40#endif
41
Kumar Galad2b194e2008-06-04 02:59:29 -050042 __FP_PACK_D(frD, R);
43
44 return FP_CUR_EXCEPTIONS;
Linus Torvalds1da177e2005-04-16 15:20:36 -070045}