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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-7.1/] [sim/] [common/] [cgen-accfp.c] - Blame information for rev 231

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/* Accurate fp support for CGEN-based simulators.
   Copyright (C) 1999 Cygnus Solutions.
 
   This implemention assumes:
   typedef USI SF;
   typedef UDI DF;
 
   TODO:
   - lazy encoding/decoding
   - checking return code (say by callback)
   - proper rounding
*/
 
#include "sim-main.h"
#include "sim-fpu.h"
 
/* SF mode support */
 
static SF
addsf (CGEN_FPU* fpu, SF x, SF y)
{
  sim_fpu op1;
  sim_fpu op2;
  sim_fpu ans;
  unsigned32 res;
  sim_fpu_status status;
 
  sim_fpu_32to (&op1, x);
  sim_fpu_32to (&op2, y);
  status = sim_fpu_add (&ans, &op1, &op2);
  if (status != 0)
    (*fpu->ops->error) (fpu, status);
  sim_fpu_to32 (&res, &ans);
 
  return res;
}
 
static SF
subsf (CGEN_FPU* fpu, SF x, SF y)
{
  sim_fpu op1;
  sim_fpu op2;
  sim_fpu ans;
  unsigned32 res;
  sim_fpu_status status;
 
  sim_fpu_32to (&op1, x);
  sim_fpu_32to (&op2, y);
  status = sim_fpu_sub (&ans, &op1, &op2);
  if (status != 0)
    (*fpu->ops->error) (fpu, status);
  sim_fpu_to32 (&res, &ans);
 
  return res;
}
 
static SF
mulsf (CGEN_FPU* fpu, SF x, SF y)
{
  sim_fpu op1;
  sim_fpu op2;
  sim_fpu ans;
  unsigned32 res;
  sim_fpu_status status;
 
  sim_fpu_32to (&op1, x);
  sim_fpu_32to (&op2, y);
  status = sim_fpu_mul (&ans, &op1, &op2);
  if (status != 0)
    (*fpu->ops->error) (fpu, status);
  sim_fpu_to32 (&res, &ans);
 
  return res;
}
 
static SF
divsf (CGEN_FPU* fpu, SF x, SF y)
{
  sim_fpu op1;
  sim_fpu op2;
  sim_fpu ans;
  unsigned32 res;
  sim_fpu_status status;
 
  sim_fpu_32to (&op1, x);
  sim_fpu_32to (&op2, y);
  status = sim_fpu_div (&ans, &op1, &op2);
  if (status != 0)
    (*fpu->ops->error) (fpu, status);
  sim_fpu_to32 (&res, &ans);
 
  return res;
}
 
static SF
negsf (CGEN_FPU* fpu, SF x)
{
  sim_fpu op1;
  sim_fpu ans;
  unsigned32 res;
  sim_fpu_status status;
 
  sim_fpu_32to (&op1, x);
  status = sim_fpu_neg (&ans, &op1);
  if (status != 0)
    (*fpu->ops->error) (fpu, status);
  sim_fpu_to32 (&res, &ans);
 
  return res;
}
 
static SF
abssf (CGEN_FPU* fpu, SF x)
{
  sim_fpu op1;
  sim_fpu ans;
  unsigned32 res;
  sim_fpu_status status;
 
  sim_fpu_32to (&op1, x);
  status = sim_fpu_abs (&ans, &op1);
  if (status != 0)
    (*fpu->ops->error) (fpu, status);
  sim_fpu_to32 (&res, &ans);
 
  return res;
}
 
static SF
sqrtsf (CGEN_FPU* fpu, SF x)
{
  sim_fpu op1;
  sim_fpu ans;
  unsigned32 res;
  sim_fpu_status status;
 
  sim_fpu_32to (&op1, x);
  status = sim_fpu_sqrt (&ans, &op1);
  if (status != 0)
    (*fpu->ops->error) (fpu, status);
  sim_fpu_to32 (&res, &ans);
 
  return res;
}
 
static SF
invsf (CGEN_FPU* fpu, SF x)
{
  sim_fpu op1;
  sim_fpu ans;
  unsigned32 res;
  sim_fpu_status status;
 
  sim_fpu_32to (&op1, x);
  status = sim_fpu_inv (&ans, &op1);
  if (status != 0)
    (*fpu->ops->error) (fpu, status);
  sim_fpu_to32 (&res, &ans);
 
  return res;
}
 
static SF
minsf (CGEN_FPU* fpu, SF x, SF y)
{
  sim_fpu op1;
  sim_fpu op2;
  sim_fpu ans;
  unsigned32 res;
  sim_fpu_status status;
 
  sim_fpu_32to (&op1, x);
  sim_fpu_32to (&op2, y);
  status = sim_fpu_min (&ans, &op1, &op2);
  if (status != 0)
    (*fpu->ops->error) (fpu, status);
  sim_fpu_to32 (&res, &ans);
 
  return res;
}
 
static SF
maxsf (CGEN_FPU* fpu, SF x, SF y)
{
  sim_fpu op1;
  sim_fpu op2;
  sim_fpu ans;
  unsigned32 res;
  sim_fpu_status status;
 
  sim_fpu_32to (&op1, x);
  sim_fpu_32to (&op2, y);
  status = sim_fpu_max (&ans, &op1, &op2);
  if (status != 0)
    (*fpu->ops->error) (fpu, status);
  sim_fpu_to32 (&res, &ans);
 
  return res;
}
 
static CGEN_FP_CMP
cmpsf (CGEN_FPU* fpu, SF x, SF y)
{
  sim_fpu op1;
  sim_fpu op2;
 
  sim_fpu_32to (&op1, x);
  sim_fpu_32to (&op2, y);
 
  if (sim_fpu_is_nan (&op1)
      || sim_fpu_is_nan (&op2))
    return FP_CMP_NAN;
 
  if (x < y)
    return FP_CMP_LT;
  if (x > y)
    return FP_CMP_GT;
  return FP_CMP_EQ;
}
 
static int
eqsf (CGEN_FPU* fpu, SF x, SF y)
{
  sim_fpu op1;
  sim_fpu op2;
 
  sim_fpu_32to (&op1, x);
  sim_fpu_32to (&op2, y);
  return sim_fpu_is_eq (&op1, &op2);
}
 
static int
nesf (CGEN_FPU* fpu, SF x, SF y)
{
  sim_fpu op1;
  sim_fpu op2;
 
  sim_fpu_32to (&op1, x);
  sim_fpu_32to (&op2, y);
  return sim_fpu_is_ne (&op1, &op2);
}
 
static int
ltsf (CGEN_FPU* fpu, SF x, SF y)
{
  sim_fpu op1;
  sim_fpu op2;
 
  sim_fpu_32to (&op1, x);
  sim_fpu_32to (&op2, y);
  return sim_fpu_is_lt (&op1, &op2);
}
 
static int
lesf (CGEN_FPU* fpu, SF x, SF y)
{
  sim_fpu op1;
  sim_fpu op2;
 
  sim_fpu_32to (&op1, x);
  sim_fpu_32to (&op2, y);
  return sim_fpu_is_le (&op1, &op2);
}
 
static int
gtsf (CGEN_FPU* fpu, SF x, SF y)
{
  sim_fpu op1;
  sim_fpu op2;
 
  sim_fpu_32to (&op1, x);
  sim_fpu_32to (&op2, y);
  return sim_fpu_is_gt (&op1, &op2);
}
 
static int
gesf (CGEN_FPU* fpu, SF x, SF y)
{
  sim_fpu op1;
  sim_fpu op2;
 
  sim_fpu_32to (&op1, x);
  sim_fpu_32to (&op2, y);
  return sim_fpu_is_ge (&op1, &op2);
}
 
static DF
fextsfdf (CGEN_FPU* fpu, int how UNUSED, SF x)
{
  sim_fpu op1;
  unsigned64 res;
 
  sim_fpu_32to (&op1, x);
  sim_fpu_to64 (&res, &op1);
 
  return res;
}
 
static SF
ftruncdfsf (CGEN_FPU* fpu, int how UNUSED, DF x)
{
  sim_fpu op1;
  unsigned32 res;
 
  sim_fpu_64to (&op1, x);
  sim_fpu_to32 (&res, &op1);
 
  return res;
}
 
static SF
floatsisf (CGEN_FPU* fpu, int how UNUSED, SI x)
{
  sim_fpu ans;
  unsigned32 res;
 
  sim_fpu_i32to (&ans, x, sim_fpu_round_near);
  sim_fpu_to32 (&res, &ans);
  return res;
}
 
static DF
floatsidf (CGEN_FPU* fpu, int how UNUSED, SI x)
{
  sim_fpu ans;
  unsigned64 res;
 
  sim_fpu_i32to (&ans, x, sim_fpu_round_near);
  sim_fpu_to64 (&res, &ans);
  return res;
}
 
static SF
ufloatsisf (CGEN_FPU* fpu, int how UNUSED, USI x)
{
  sim_fpu ans;
  unsigned32 res;
 
  sim_fpu_u32to (&ans, x, sim_fpu_round_near);
  sim_fpu_to32 (&res, &ans);
  return res;
}
 
static SI
fixsfsi (CGEN_FPU* fpu, int how UNUSED, SF x)
{
  sim_fpu op1;
  unsigned32 res;
 
  sim_fpu_32to (&op1, x);
  sim_fpu_to32i (&res, &op1, sim_fpu_round_near);
  return res;
}
 
static SI
fixdfsi (CGEN_FPU* fpu, int how UNUSED, DF x)
{
  sim_fpu op1;
  unsigned32 res;
 
  sim_fpu_64to (&op1, x);
  sim_fpu_to32i (&res, &op1, sim_fpu_round_near);
  return res;
}
 
static USI
ufixsfsi (CGEN_FPU* fpu, int how UNUSED, SF x)
{
  sim_fpu op1;
  unsigned32 res;
 
  sim_fpu_32to (&op1, x);
  sim_fpu_to32u (&res, &op1, sim_fpu_round_near);
  return res;
}
 
/* DF mode support */
 
static DF
adddf (CGEN_FPU* fpu, DF x, DF y)
{
  sim_fpu op1;
  sim_fpu op2;
  sim_fpu ans;
  unsigned64 res;
  sim_fpu_status status;
 
  sim_fpu_64to (&op1, x);
  sim_fpu_64to (&op2, y);
  status = sim_fpu_add (&ans, &op1, &op2);
  if (status != 0)
    (*fpu->ops->error) (fpu, status);
  sim_fpu_to64 (&res, &ans);
 
  return res;
}
 
static DF
subdf (CGEN_FPU* fpu, DF x, DF y)
{
  sim_fpu op1;
  sim_fpu op2;
  sim_fpu ans;
  unsigned64 res;
  sim_fpu_status status;
 
  sim_fpu_64to (&op1, x);
  sim_fpu_64to (&op2, y);
  status = sim_fpu_sub (&ans, &op1, &op2);
  if (status != 0)
    (*fpu->ops->error) (fpu, status);
  sim_fpu_to64 (&res, &ans);
 
  return res;
}
 
static DF
muldf (CGEN_FPU* fpu, DF x, DF y)
{
  sim_fpu op1;
  sim_fpu op2;
  sim_fpu ans;
  unsigned64 res;
  sim_fpu_status status;
 
  sim_fpu_64to (&op1, x);
  sim_fpu_64to (&op2, y);
  status = sim_fpu_mul (&ans, &op1, &op2);
  if (status != 0)
    (*fpu->ops->error) (fpu, status);
  sim_fpu_to64 (&res, &ans);
 
  return res;
}
 
static DF
divdf (CGEN_FPU* fpu, DF x, DF y)
{
  sim_fpu op1;
  sim_fpu op2;
  sim_fpu ans;
  unsigned64 res;
  sim_fpu_status status;
 
  sim_fpu_64to (&op1, x);
  sim_fpu_64to (&op2, y);
  status = sim_fpu_div (&ans, &op1, &op2);
  if (status != 0)
    (*fpu->ops->error) (fpu, status);
  sim_fpu_to64 (&res, &ans);
 
  return res;
}
 
static DF
negdf (CGEN_FPU* fpu, DF x)
{
  sim_fpu op1;
  sim_fpu ans;
  unsigned64 res;
  sim_fpu_status status;
 
  sim_fpu_64to (&op1, x);
  status = sim_fpu_neg (&ans, &op1);
  if (status != 0)
    (*fpu->ops->error) (fpu, status);
  sim_fpu_to64 (&res, &ans);
 
  return res;
}
 
static DF
absdf (CGEN_FPU* fpu, DF x)
{
  sim_fpu op1;
  sim_fpu ans;
  unsigned64 res;
  sim_fpu_status status;
 
  sim_fpu_64to (&op1, x);
  status = sim_fpu_abs (&ans, &op1);
  if (status != 0)
    (*fpu->ops->error) (fpu, status);
  sim_fpu_to64 (&res, &ans);
 
  return res;
}
 
static DF
sqrtdf (CGEN_FPU* fpu, DF x)
{
  sim_fpu op1;
  sim_fpu ans;
  unsigned64 res;
  sim_fpu_status status;
 
  sim_fpu_64to (&op1, x);
  status = sim_fpu_sqrt (&ans, &op1);
  if (status != 0)
    (*fpu->ops->error) (fpu, status);
  sim_fpu_to64 (&res, &ans);
 
  return res;
}
 
static DF
invdf (CGEN_FPU* fpu, DF x)
{
  sim_fpu op1;
  sim_fpu ans;
  unsigned64 res;
  sim_fpu_status status;
 
  sim_fpu_64to (&op1, x);
  status = sim_fpu_inv (&ans, &op1);
  if (status != 0)
    (*fpu->ops->error) (fpu, status);
  sim_fpu_to64 (&res, &ans);
 
  return res;
}
 
static DF
mindf (CGEN_FPU* fpu, DF x, DF y)
{
  sim_fpu op1;
  sim_fpu op2;
  sim_fpu ans;
  unsigned64 res;
  sim_fpu_status status;
 
  sim_fpu_64to (&op1, x);
  sim_fpu_64to (&op2, y);
  status = sim_fpu_min (&ans, &op1, &op2);
  if (status != 0)
    (*fpu->ops->error) (fpu, status);
  sim_fpu_to64 (&res, &ans);
 
  return res;
}
 
static DF
maxdf (CGEN_FPU* fpu, DF x, DF y)
{
  sim_fpu op1;
  sim_fpu op2;
  sim_fpu ans;
  unsigned64 res;
  sim_fpu_status status;
 
  sim_fpu_64to (&op1, x);
  sim_fpu_64to (&op2, y);
  status = sim_fpu_max (&ans, &op1, &op2);
  if (status != 0)
    (*fpu->ops->error) (fpu, status);
  sim_fpu_to64 (&res, &ans);
 
  return res;
}
 
static CGEN_FP_CMP
cmpdf (CGEN_FPU* fpu, DF x, DF y)
{
  sim_fpu op1;
  sim_fpu op2;
 
  sim_fpu_64to (&op1, x);
  sim_fpu_64to (&op2, y);
 
  if (sim_fpu_is_nan (&op1)
      || sim_fpu_is_nan (&op2))
    return FP_CMP_NAN;
 
  if (x < y)
    return FP_CMP_LT;
  if (x > y)
    return FP_CMP_GT;
  return FP_CMP_EQ;
}
 
static int
eqdf (CGEN_FPU* fpu, DF x, DF y)
{
  sim_fpu op1;
  sim_fpu op2;
 
  sim_fpu_64to (&op1, x);
  sim_fpu_64to (&op2, y);
  return sim_fpu_is_eq (&op1, &op2);
}
 
static int
nedf (CGEN_FPU* fpu, DF x, DF y)
{
  sim_fpu op1;
  sim_fpu op2;
 
  sim_fpu_64to (&op1, x);
  sim_fpu_64to (&op2, y);
  return sim_fpu_is_ne (&op1, &op2);
}
 
static int
ltdf (CGEN_FPU* fpu, DF x, DF y)
{
  sim_fpu op1;
  sim_fpu op2;
 
  sim_fpu_64to (&op1, x);
  sim_fpu_64to (&op2, y);
  return sim_fpu_is_lt (&op1, &op2);
}
 
static int
ledf (CGEN_FPU* fpu, DF x, DF y)
{
  sim_fpu op1;
  sim_fpu op2;
 
  sim_fpu_64to (&op1, x);
  sim_fpu_64to (&op2, y);
  return sim_fpu_is_le (&op1, &op2);
}
 
static int
gtdf (CGEN_FPU* fpu, DF x, DF y)
{
  sim_fpu op1;
  sim_fpu op2;
 
  sim_fpu_64to (&op1, x);
  sim_fpu_64to (&op2, y);
  return sim_fpu_is_gt (&op1, &op2);
}
 
static int
gedf (CGEN_FPU* fpu, DF x, DF y)
{
  sim_fpu op1;
  sim_fpu op2;
 
  sim_fpu_64to (&op1, x);
  sim_fpu_64to (&op2, y);
  return sim_fpu_is_ge (&op1, &op2);
}
 
/* Initialize FP_OPS to use accurate library.  */
 
void
cgen_init_accurate_fpu (SIM_CPU* cpu, CGEN_FPU* fpu, CGEN_FPU_ERROR_FN* error)
{
  CGEN_FP_OPS* o;
 
  fpu->owner = cpu;
  /* ??? small memory leak, not freed by sim_close */
  fpu->ops = (CGEN_FP_OPS*) xmalloc (sizeof (CGEN_FP_OPS));
 
  o = fpu->ops;
  memset (o, 0, sizeof (*o));
 
  o->error = error;
 
  o->addsf = addsf;
  o->subsf = subsf;
  o->mulsf = mulsf;
  o->divsf = divsf;
  o->negsf = negsf;
  o->abssf = abssf;
  o->sqrtsf = sqrtsf;
  o->invsf = invsf;
  o->minsf = minsf;
  o->maxsf = maxsf;
  o->cmpsf = cmpsf;
  o->eqsf = eqsf;
  o->nesf = nesf;
  o->ltsf = ltsf;
  o->lesf = lesf;
  o->gtsf = gtsf;
  o->gesf = gesf;
 
  o->adddf = adddf;
  o->subdf = subdf;
  o->muldf = muldf;
  o->divdf = divdf;
  o->negdf = negdf;
  o->absdf = absdf;
  o->sqrtdf = sqrtdf;
  o->invdf = invdf;
  o->mindf = mindf;
  o->maxdf = maxdf;
  o->cmpdf = cmpdf;
  o->eqdf = eqdf;
  o->nedf = nedf;
  o->ltdf = ltdf;
  o->ledf = ledf;
  o->gtdf = gtdf;
  o->gedf = gedf;
  o->fextsfdf = fextsfdf;
  o->ftruncdfsf = ftruncdfsf;
  o->floatsisf = floatsisf;
  o->floatsidf = floatsidf;
  o->ufloatsisf = ufloatsisf;
  o->fixsfsi = fixsfsi;
  o->fixdfsi = fixdfsi;
  o->ufixsfsi = ufixsfsi;
}

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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-7.1/] [sim/] [common/] [cgen-accfp.c] - Blame information for rev 231

Line No.	Rev	Author	Line
1	227	jeremybenn	`/* Accurate fp support for CGEN-based simulators.`
2			`Copyright (C) 1999 Cygnus Solutions.`
3
4			`This implemention assumes:`
5			`typedef USI SF;`
6			`typedef UDI DF;`
7
8			`TODO:`
9			`- lazy encoding/decoding`
10			`- checking return code (say by callback)`
11			`- proper rounding`
12			`*/`
13
14			`#include "sim-main.h"`
15			`#include "sim-fpu.h"`
16
17			`/* SF mode support */`
18
19			`static SF`
20			`addsf (CGEN_FPU* fpu, SF x, SF y)`
21			`{`
22			`sim_fpu op1;`
23			`sim_fpu op2;`
24			`sim_fpu ans;`
25			`unsigned32 res;`
26			`sim_fpu_status status;`
27
28			`sim_fpu_32to (&op1, x);`
29			`sim_fpu_32to (&op2, y);`
30			`status = sim_fpu_add (&ans, &op1, &op2);`
31			`if (status != 0)`
32			`(*fpu->ops->error) (fpu, status);`
33			`sim_fpu_to32 (&res, &ans);`
34
35			`return res;`
36			`}`
37
38			`static SF`
39			`subsf (CGEN_FPU* fpu, SF x, SF y)`
40			`{`
41			`sim_fpu op1;`
42			`sim_fpu op2;`
43			`sim_fpu ans;`
44			`unsigned32 res;`
45			`sim_fpu_status status;`
46
47			`sim_fpu_32to (&op1, x);`
48			`sim_fpu_32to (&op2, y);`
49			`status = sim_fpu_sub (&ans, &op1, &op2);`
50			`if (status != 0)`
51			`(*fpu->ops->error) (fpu, status);`
52			`sim_fpu_to32 (&res, &ans);`
53
54			`return res;`
55			`}`
56
57			`static SF`
58			`mulsf (CGEN_FPU* fpu, SF x, SF y)`
59			`{`
60			`sim_fpu op1;`
61			`sim_fpu op2;`
62			`sim_fpu ans;`
63			`unsigned32 res;`
64			`sim_fpu_status status;`
65
66			`sim_fpu_32to (&op1, x);`
67			`sim_fpu_32to (&op2, y);`
68			`status = sim_fpu_mul (&ans, &op1, &op2);`
69			`if (status != 0)`
70			`(*fpu->ops->error) (fpu, status);`
71			`sim_fpu_to32 (&res, &ans);`
72
73			`return res;`
74			`}`
75
76			`static SF`
77			`divsf (CGEN_FPU* fpu, SF x, SF y)`
78			`{`
79			`sim_fpu op1;`
80			`sim_fpu op2;`
81			`sim_fpu ans;`
82			`unsigned32 res;`
83			`sim_fpu_status status;`
84
85			`sim_fpu_32to (&op1, x);`
86			`sim_fpu_32to (&op2, y);`
87			`status = sim_fpu_div (&ans, &op1, &op2);`
88			`if (status != 0)`
89			`(*fpu->ops->error) (fpu, status);`
90			`sim_fpu_to32 (&res, &ans);`
91
92			`return res;`
93			`}`
94
95			`static SF`
96			`negsf (CGEN_FPU* fpu, SF x)`
97			`{`
98			`sim_fpu op1;`
99			`sim_fpu ans;`
100			`unsigned32 res;`
101			`sim_fpu_status status;`
102
103			`sim_fpu_32to (&op1, x);`
104			`status = sim_fpu_neg (&ans, &op1);`
105			`if (status != 0)`
106			`(*fpu->ops->error) (fpu, status);`
107			`sim_fpu_to32 (&res, &ans);`
108
109			`return res;`
110			`}`
111
112			`static SF`
113			`abssf (CGEN_FPU* fpu, SF x)`
114			`{`
115			`sim_fpu op1;`
116			`sim_fpu ans;`
117			`unsigned32 res;`
118			`sim_fpu_status status;`
119
120			`sim_fpu_32to (&op1, x);`
121			`status = sim_fpu_abs (&ans, &op1);`
122			`if (status != 0)`
123			`(*fpu->ops->error) (fpu, status);`
124			`sim_fpu_to32 (&res, &ans);`
125
126			`return res;`
127			`}`
128
129			`static SF`
130			`sqrtsf (CGEN_FPU* fpu, SF x)`
131			`{`
132			`sim_fpu op1;`
133			`sim_fpu ans;`
134			`unsigned32 res;`
135			`sim_fpu_status status;`
136
137			`sim_fpu_32to (&op1, x);`
138			`status = sim_fpu_sqrt (&ans, &op1);`
139			`if (status != 0)`
140			`(*fpu->ops->error) (fpu, status);`
141			`sim_fpu_to32 (&res, &ans);`
142
143			`return res;`
144			`}`
145
146			`static SF`
147			`invsf (CGEN_FPU* fpu, SF x)`
148			`{`
149			`sim_fpu op1;`
150			`sim_fpu ans;`
151			`unsigned32 res;`
152			`sim_fpu_status status;`
153
154			`sim_fpu_32to (&op1, x);`
155			`status = sim_fpu_inv (&ans, &op1);`
156			`if (status != 0)`
157			`(*fpu->ops->error) (fpu, status);`
158			`sim_fpu_to32 (&res, &ans);`
159
160			`return res;`
161			`}`
162
163			`static SF`
164			`minsf (CGEN_FPU* fpu, SF x, SF y)`
165			`{`
166			`sim_fpu op1;`
167			`sim_fpu op2;`
168			`sim_fpu ans;`
169			`unsigned32 res;`
170			`sim_fpu_status status;`
171
172			`sim_fpu_32to (&op1, x);`
173			`sim_fpu_32to (&op2, y);`
174			`status = sim_fpu_min (&ans, &op1, &op2);`
175			`if (status != 0)`
176			`(*fpu->ops->error) (fpu, status);`
177			`sim_fpu_to32 (&res, &ans);`
178
179			`return res;`
180			`}`
181
182			`static SF`
183			`maxsf (CGEN_FPU* fpu, SF x, SF y)`
184			`{`
185			`sim_fpu op1;`
186			`sim_fpu op2;`
187			`sim_fpu ans;`
188			`unsigned32 res;`
189			`sim_fpu_status status;`
190
191			`sim_fpu_32to (&op1, x);`
192			`sim_fpu_32to (&op2, y);`
193			`status = sim_fpu_max (&ans, &op1, &op2);`
194			`if (status != 0)`
195			`(*fpu->ops->error) (fpu, status);`
196			`sim_fpu_to32 (&res, &ans);`
197
198			`return res;`
199			`}`
200
201			`static CGEN_FP_CMP`
202			`cmpsf (CGEN_FPU* fpu, SF x, SF y)`
203			`{`
204			`sim_fpu op1;`
205			`sim_fpu op2;`
206
207			`sim_fpu_32to (&op1, x);`
208			`sim_fpu_32to (&op2, y);`
209
210			`if (sim_fpu_is_nan (&op1)`
211			`\|\| sim_fpu_is_nan (&op2))`
212			`return FP_CMP_NAN;`
213
214			`if (x < y)`
215			`return FP_CMP_LT;`
216			`if (x > y)`
217			`return FP_CMP_GT;`
218			`return FP_CMP_EQ;`
219			`}`
220
221			`static int`
222			`eqsf (CGEN_FPU* fpu, SF x, SF y)`
223			`{`
224			`sim_fpu op1;`
225			`sim_fpu op2;`
226
227			`sim_fpu_32to (&op1, x);`
228			`sim_fpu_32to (&op2, y);`
229			`return sim_fpu_is_eq (&op1, &op2);`
230			`}`
231
232			`static int`
233			`nesf (CGEN_FPU* fpu, SF x, SF y)`
234			`{`
235			`sim_fpu op1;`
236			`sim_fpu op2;`
237
238			`sim_fpu_32to (&op1, x);`
239			`sim_fpu_32to (&op2, y);`
240			`return sim_fpu_is_ne (&op1, &op2);`
241			`}`
242
243			`static int`
244			`ltsf (CGEN_FPU* fpu, SF x, SF y)`
245			`{`
246			`sim_fpu op1;`
247			`sim_fpu op2;`
248
249			`sim_fpu_32to (&op1, x);`
250			`sim_fpu_32to (&op2, y);`
251			`return sim_fpu_is_lt (&op1, &op2);`
252			`}`
253
254			`static int`
255			`lesf (CGEN_FPU* fpu, SF x, SF y)`
256			`{`
257			`sim_fpu op1;`
258			`sim_fpu op2;`
259
260			`sim_fpu_32to (&op1, x);`
261			`sim_fpu_32to (&op2, y);`
262			`return sim_fpu_is_le (&op1, &op2);`
263			`}`
264
265			`static int`
266			`gtsf (CGEN_FPU* fpu, SF x, SF y)`
267			`{`
268			`sim_fpu op1;`
269			`sim_fpu op2;`
270
271			`sim_fpu_32to (&op1, x);`
272			`sim_fpu_32to (&op2, y);`
273			`return sim_fpu_is_gt (&op1, &op2);`
274			`}`
275
276			`static int`
277			`gesf (CGEN_FPU* fpu, SF x, SF y)`
278			`{`
279			`sim_fpu op1;`
280			`sim_fpu op2;`
281
282			`sim_fpu_32to (&op1, x);`
283			`sim_fpu_32to (&op2, y);`
284			`return sim_fpu_is_ge (&op1, &op2);`
285			`}`
286
287			`static DF`
288			`fextsfdf (CGEN_FPU* fpu, int how UNUSED, SF x)`
289			`{`
290			`sim_fpu op1;`
291			`unsigned64 res;`
292
293			`sim_fpu_32to (&op1, x);`
294			`sim_fpu_to64 (&res, &op1);`
295
296			`return res;`
297			`}`
298
299			`static SF`
300			`ftruncdfsf (CGEN_FPU* fpu, int how UNUSED, DF x)`
301			`{`
302			`sim_fpu op1;`
303			`unsigned32 res;`
304
305			`sim_fpu_64to (&op1, x);`
306			`sim_fpu_to32 (&res, &op1);`
307
308			`return res;`
309			`}`
310
311			`static SF`
312			`floatsisf (CGEN_FPU* fpu, int how UNUSED, SI x)`
313			`{`
314			`sim_fpu ans;`
315			`unsigned32 res;`
316
317			`sim_fpu_i32to (&ans, x, sim_fpu_round_near);`
318			`sim_fpu_to32 (&res, &ans);`
319			`return res;`
320			`}`
321
322			`static DF`
323			`floatsidf (CGEN_FPU* fpu, int how UNUSED, SI x)`
324			`{`
325			`sim_fpu ans;`
326			`unsigned64 res;`
327
328			`sim_fpu_i32to (&ans, x, sim_fpu_round_near);`
329			`sim_fpu_to64 (&res, &ans);`
330			`return res;`
331			`}`
332
333			`static SF`
334			`ufloatsisf (CGEN_FPU* fpu, int how UNUSED, USI x)`
335			`{`
336			`sim_fpu ans;`
337			`unsigned32 res;`
338
339			`sim_fpu_u32to (&ans, x, sim_fpu_round_near);`
340			`sim_fpu_to32 (&res, &ans);`
341			`return res;`
342			`}`
343
344			`static SI`
345			`fixsfsi (CGEN_FPU* fpu, int how UNUSED, SF x)`
346			`{`
347			`sim_fpu op1;`
348			`unsigned32 res;`
349
350			`sim_fpu_32to (&op1, x);`
351			`sim_fpu_to32i (&res, &op1, sim_fpu_round_near);`
352			`return res;`
353			`}`
354
355			`static SI`
356			`fixdfsi (CGEN_FPU* fpu, int how UNUSED, DF x)`
357			`{`
358			`sim_fpu op1;`
359			`unsigned32 res;`
360
361			`sim_fpu_64to (&op1, x);`
362			`sim_fpu_to32i (&res, &op1, sim_fpu_round_near);`
363			`return res;`
364			`}`
365
366			`static USI`
367			`ufixsfsi (CGEN_FPU* fpu, int how UNUSED, SF x)`
368			`{`
369			`sim_fpu op1;`
370			`unsigned32 res;`
371
372			`sim_fpu_32to (&op1, x);`
373			`sim_fpu_to32u (&res, &op1, sim_fpu_round_near);`
374			`return res;`
375			`}`
376
377			`/* DF mode support */`
378
379			`static DF`
380			`adddf (CGEN_FPU* fpu, DF x, DF y)`
381			`{`
382			`sim_fpu op1;`
383			`sim_fpu op2;`
384			`sim_fpu ans;`
385			`unsigned64 res;`
386			`sim_fpu_status status;`
387
388			`sim_fpu_64to (&op1, x);`
389			`sim_fpu_64to (&op2, y);`
390			`status = sim_fpu_add (&ans, &op1, &op2);`
391			`if (status != 0)`
392			`(*fpu->ops->error) (fpu, status);`
393			`sim_fpu_to64 (&res, &ans);`
394
395			`return res;`
396			`}`
397
398			`static DF`
399			`subdf (CGEN_FPU* fpu, DF x, DF y)`
400			`{`
401			`sim_fpu op1;`
402			`sim_fpu op2;`
403			`sim_fpu ans;`
404			`unsigned64 res;`
405			`sim_fpu_status status;`
406
407			`sim_fpu_64to (&op1, x);`
408			`sim_fpu_64to (&op2, y);`
409			`status = sim_fpu_sub (&ans, &op1, &op2);`
410			`if (status != 0)`
411			`(*fpu->ops->error) (fpu, status);`
412			`sim_fpu_to64 (&res, &ans);`
413
414			`return res;`
415			`}`
416
417			`static DF`
418			`muldf (CGEN_FPU* fpu, DF x, DF y)`
419			`{`
420			`sim_fpu op1;`
421			`sim_fpu op2;`
422			`sim_fpu ans;`
423			`unsigned64 res;`
424			`sim_fpu_status status;`
425
426			`sim_fpu_64to (&op1, x);`
427			`sim_fpu_64to (&op2, y);`
428			`status = sim_fpu_mul (&ans, &op1, &op2);`
429			`if (status != 0)`
430			`(*fpu->ops->error) (fpu, status);`
431			`sim_fpu_to64 (&res, &ans);`
432
433			`return res;`
434			`}`
435
436			`static DF`
437			`divdf (CGEN_FPU* fpu, DF x, DF y)`
438			`{`
439			`sim_fpu op1;`
440			`sim_fpu op2;`
441			`sim_fpu ans;`
442			`unsigned64 res;`
443			`sim_fpu_status status;`
444
445			`sim_fpu_64to (&op1, x);`
446			`sim_fpu_64to (&op2, y);`
447			`status = sim_fpu_div (&ans, &op1, &op2);`
448			`if (status != 0)`
449			`(*fpu->ops->error) (fpu, status);`
450			`sim_fpu_to64 (&res, &ans);`
451
452			`return res;`
453			`}`
454
455			`static DF`
456			`negdf (CGEN_FPU* fpu, DF x)`
457			`{`
458			`sim_fpu op1;`
459			`sim_fpu ans;`
460			`unsigned64 res;`
461			`sim_fpu_status status;`
462
463			`sim_fpu_64to (&op1, x);`
464			`status = sim_fpu_neg (&ans, &op1);`
465			`if (status != 0)`
466			`(*fpu->ops->error) (fpu, status);`
467			`sim_fpu_to64 (&res, &ans);`
468
469			`return res;`
470			`}`
471
472			`static DF`
473			`absdf (CGEN_FPU* fpu, DF x)`
474			`{`
475			`sim_fpu op1;`
476			`sim_fpu ans;`
477			`unsigned64 res;`
478			`sim_fpu_status status;`
479
480			`sim_fpu_64to (&op1, x);`
481			`status = sim_fpu_abs (&ans, &op1);`
482			`if (status != 0)`
483			`(*fpu->ops->error) (fpu, status);`
484			`sim_fpu_to64 (&res, &ans);`
485
486			`return res;`
487			`}`
488
489			`static DF`
490			`sqrtdf (CGEN_FPU* fpu, DF x)`
491			`{`
492			`sim_fpu op1;`
493			`sim_fpu ans;`
494			`unsigned64 res;`
495			`sim_fpu_status status;`
496
497			`sim_fpu_64to (&op1, x);`
498			`status = sim_fpu_sqrt (&ans, &op1);`
499			`if (status != 0)`
500			`(*fpu->ops->error) (fpu, status);`
501			`sim_fpu_to64 (&res, &ans);`
502
503			`return res;`
504			`}`
505
506			`static DF`
507			`invdf (CGEN_FPU* fpu, DF x)`
508			`{`
509			`sim_fpu op1;`
510			`sim_fpu ans;`
511			`unsigned64 res;`
512			`sim_fpu_status status;`
513
514			`sim_fpu_64to (&op1, x);`
515			`status = sim_fpu_inv (&ans, &op1);`
516			`if (status != 0)`
517			`(*fpu->ops->error) (fpu, status);`
518			`sim_fpu_to64 (&res, &ans);`
519
520			`return res;`
521			`}`
522
523			`static DF`
524			`mindf (CGEN_FPU* fpu, DF x, DF y)`
525			`{`
526			`sim_fpu op1;`
527			`sim_fpu op2;`
528			`sim_fpu ans;`
529			`unsigned64 res;`
530			`sim_fpu_status status;`
531
532			`sim_fpu_64to (&op1, x);`
533			`sim_fpu_64to (&op2, y);`
534			`status = sim_fpu_min (&ans, &op1, &op2);`
535			`if (status != 0)`
536			`(*fpu->ops->error) (fpu, status);`
537			`sim_fpu_to64 (&res, &ans);`
538
539			`return res;`
540			`}`
541
542			`static DF`
543			`maxdf (CGEN_FPU* fpu, DF x, DF y)`
544			`{`
545			`sim_fpu op1;`
546			`sim_fpu op2;`
547			`sim_fpu ans;`
548			`unsigned64 res;`
549			`sim_fpu_status status;`
550
551			`sim_fpu_64to (&op1, x);`
552			`sim_fpu_64to (&op2, y);`
553			`status = sim_fpu_max (&ans, &op1, &op2);`
554			`if (status != 0)`
555			`(*fpu->ops->error) (fpu, status);`
556			`sim_fpu_to64 (&res, &ans);`
557
558			`return res;`
559			`}`
560
561			`static CGEN_FP_CMP`
562			`cmpdf (CGEN_FPU* fpu, DF x, DF y)`
563			`{`
564			`sim_fpu op1;`
565			`sim_fpu op2;`
566
567			`sim_fpu_64to (&op1, x);`
568			`sim_fpu_64to (&op2, y);`
569
570			`if (sim_fpu_is_nan (&op1)`
571			`\|\| sim_fpu_is_nan (&op2))`
572			`return FP_CMP_NAN;`
573
574			`if (x < y)`
575			`return FP_CMP_LT;`
576			`if (x > y)`
577			`return FP_CMP_GT;`
578			`return FP_CMP_EQ;`
579			`}`
580
581			`static int`
582			`eqdf (CGEN_FPU* fpu, DF x, DF y)`
583			`{`
584			`sim_fpu op1;`
585			`sim_fpu op2;`
586
587			`sim_fpu_64to (&op1, x);`
588			`sim_fpu_64to (&op2, y);`
589			`return sim_fpu_is_eq (&op1, &op2);`
590			`}`
591
592			`static int`
593			`nedf (CGEN_FPU* fpu, DF x, DF y)`
594			`{`
595			`sim_fpu op1;`
596			`sim_fpu op2;`
597
598			`sim_fpu_64to (&op1, x);`
599			`sim_fpu_64to (&op2, y);`
600			`return sim_fpu_is_ne (&op1, &op2);`
601			`}`
602
603			`static int`
604			`ltdf (CGEN_FPU* fpu, DF x, DF y)`
605			`{`
606			`sim_fpu op1;`
607			`sim_fpu op2;`
608
609			`sim_fpu_64to (&op1, x);`
610			`sim_fpu_64to (&op2, y);`
611			`return sim_fpu_is_lt (&op1, &op2);`
612			`}`
613
614			`static int`
615			`ledf (CGEN_FPU* fpu, DF x, DF y)`
616			`{`
617			`sim_fpu op1;`
618			`sim_fpu op2;`
619
620			`sim_fpu_64to (&op1, x);`
621			`sim_fpu_64to (&op2, y);`
622			`return sim_fpu_is_le (&op1, &op2);`
623			`}`
624
625			`static int`
626			`gtdf (CGEN_FPU* fpu, DF x, DF y)`
627			`{`
628			`sim_fpu op1;`
629			`sim_fpu op2;`
630
631			`sim_fpu_64to (&op1, x);`
632			`sim_fpu_64to (&op2, y);`
633			`return sim_fpu_is_gt (&op1, &op2);`
634			`}`
635
636			`static int`
637			`gedf (CGEN_FPU* fpu, DF x, DF y)`
638			`{`
639			`sim_fpu op1;`
640			`sim_fpu op2;`
641
642			`sim_fpu_64to (&op1, x);`
643			`sim_fpu_64to (&op2, y);`
644			`return sim_fpu_is_ge (&op1, &op2);`
645			`}`
646
647			`/* Initialize FP_OPS to use accurate library. */`
648
649			`void`
650			`cgen_init_accurate_fpu (SIM_CPU* cpu, CGEN_FPU* fpu, CGEN_FPU_ERROR_FN* error)`
651			`{`
652			`CGEN_FP_OPS* o;`
653
654			`fpu->owner = cpu;`
655			`/* ??? small memory leak, not freed by sim_close */`
656			`fpu->ops = (CGEN_FP_OPS*) xmalloc (sizeof (CGEN_FP_OPS));`
657
658			`o = fpu->ops;`
659			`memset (o, 0, sizeof (*o));`
660
661			`o->error = error;`
662
663			`o->addsf = addsf;`
664			`o->subsf = subsf;`
665			`o->mulsf = mulsf;`
666			`o->divsf = divsf;`
667			`o->negsf = negsf;`
668			`o->abssf = abssf;`
669			`o->sqrtsf = sqrtsf;`
670			`o->invsf = invsf;`
671			`o->minsf = minsf;`
672			`o->maxsf = maxsf;`
673			`o->cmpsf = cmpsf;`
674			`o->eqsf = eqsf;`
675			`o->nesf = nesf;`
676			`o->ltsf = ltsf;`
677			`o->lesf = lesf;`
678			`o->gtsf = gtsf;`
679			`o->gesf = gesf;`
680
681			`o->adddf = adddf;`
682			`o->subdf = subdf;`
683			`o->muldf = muldf;`
684			`o->divdf = divdf;`
685			`o->negdf = negdf;`
686			`o->absdf = absdf;`
687			`o->sqrtdf = sqrtdf;`
688			`o->invdf = invdf;`
689			`o->mindf = mindf;`
690			`o->maxdf = maxdf;`
691			`o->cmpdf = cmpdf;`
692			`o->eqdf = eqdf;`
693			`o->nedf = nedf;`
694			`o->ltdf = ltdf;`
695			`o->ledf = ledf;`
696			`o->gtdf = gtdf;`
697			`o->gedf = gedf;`
698			`o->fextsfdf = fextsfdf;`
699			`o->ftruncdfsf = ftruncdfsf;`
700			`o->floatsisf = floatsisf;`
701			`o->floatsidf = floatsidf;`
702			`o->ufloatsisf = ufloatsisf;`
703			`o->fixsfsi = fixsfsi;`
704			`o->fixdfsi = fixdfsi;`
705			`o->ufixsfsi = ufixsfsi;`
706			`}`