blob: 797f6a9a20b53f405687828c556ca526235ef201 [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>
8#include <math-emu/single.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -07009
10int
11fdivs(void *frD, void *frA, void *frB)
12{
13 FP_DECL_D(A);
14 FP_DECL_D(B);
15 FP_DECL_D(R);
Kumar Galad2b194e2008-06-04 02:59:29 -050016 FP_DECL_EX;
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 int ret = 0;
18
19#ifdef DEBUG
Harvey Harrisone48b1b42008-03-29 08:21:07 +110020 printk("%s: %p %p %p\n", __func__, frD, frA, frB);
Linus Torvalds1da177e2005-04-16 15:20:36 -070021#endif
22
Kumar Galad2b194e2008-06-04 02:59:29 -050023 FP_UNPACK_DP(A, frA);
24 FP_UNPACK_DP(B, frB);
Linus Torvalds1da177e2005-04-16 15:20:36 -070025
26#ifdef DEBUG
27 printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c);
28 printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c);
29#endif
30
31 if (A_c == FP_CLS_ZERO && B_c == FP_CLS_ZERO) {
32 ret |= EFLAG_VXZDZ;
33#ifdef DEBUG
Harvey Harrisone48b1b42008-03-29 08:21:07 +110034 printk("%s: FPSCR_VXZDZ raised\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -070035#endif
36 }
37 if (A_c == FP_CLS_INF && B_c == FP_CLS_INF) {
38 ret |= EFLAG_VXIDI;
39#ifdef DEBUG
Harvey Harrisone48b1b42008-03-29 08:21:07 +110040 printk("%s: FPSCR_VXIDI raised\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -070041#endif
42 }
43
44 if (B_c == FP_CLS_ZERO && A_c != FP_CLS_ZERO) {
45 ret |= EFLAG_DIVZERO;
46 if (__FPU_TRAP_P(EFLAG_DIVZERO))
47 return ret;
48 }
49
50 FP_DIV_D(R, A, B);
51
52#ifdef DEBUG
53 printk("D: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c);
54#endif
55
Kumar Galad2b194e2008-06-04 02:59:29 -050056 __FP_PACK_DS(frD, R);
57
58 return FP_CUR_EXCEPTIONS;
Linus Torvalds1da177e2005-04-16 15:20:36 -070059}