1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
|
/* GRT stack implementation for Win32 using fibers.
Copyright (C) 2005 Tristan Gingold.
GHDL is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2, or (at your option) any later
version.
GHDL is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA.
*/
#include <windows.h>
#include <stdio.h>
#include <setjmp.h>
#include <assert.h>
#include <excpt.h>
static EXCEPTION_DISPOSITION
ghdl_SEH_handler (struct _EXCEPTION_RECORD* ExceptionRecord,
void *EstablisherFrame,
struct _CONTEXT* ContextRecord,
void *DispatcherContext);
struct exception_registration
{
struct exception_registration *prev;
void *handler;
};
struct stack_type
{
LPVOID fiber; // Win fiber.
void (*func)(void *); // Function
void *arg; // Function argument.
};
static struct stack_type main_stack_context;
static struct stack_type *current;
extern void grt_set_main_stack (struct stack_type *stack);
void grt_stack_init(void)
{
main_stack_context.fiber = ConvertThreadToFiber (NULL);
if (main_stack_context.fiber == NULL)
{
fprintf (stderr, "convertThreadToFiber failed (err=%lu)\n",
GetLastError ());
abort ();
}
grt_set_main_stack (&main_stack_context);
current = &main_stack_context;
}
static VOID __stdcall
grt_stack_loop (void *v_stack)
{
struct stack_type *stack = (struct stack_type *)v_stack;
struct exception_registration er;
struct exception_registration *prev;
/* Get current handler. */
asm ("mov %%fs:(0),%0" : "=r" (prev));
/* Build regisration. */
er.prev = prev;
er.handler = ghdl_SEH_handler;
/* Register. */
asm ("mov %0,%%fs:(0)" : : "r" (&er));
while (1)
{
(*stack->func)(stack->arg);
}
}
struct stack_type *
grt_stack_create (void (*func)(void *), void *arg)
{
struct stack_type *res;
res = malloc (sizeof (struct stack_type));
if (res == NULL)
return NULL;
res->func = func;
res->arg = arg;
res->fiber = CreateFiber (0, &grt_stack_loop, res);
if (res->fiber == NULL)
{
free (res);
return NULL;
}
return res;
}
static int run_env_en;
static jmp_buf run_env;
static int need_longjmp;
void
grt_stack_switch (struct stack_type *to, struct stack_type *from)
{
assert (current == from);
current = to;
SwitchToFiber (to->fiber);
if (from == &main_stack_context && need_longjmp)
{
/* We returned to do the longjump. */
current = &main_stack_context;
longjmp (run_env, need_longjmp);
}
}
void
grt_stack_delete (struct stack_type *stack)
{
DeleteFiber (stack->fiber);
stack->fiber = NULL;
}
void
__ghdl_maybe_return_via_longjump (int val)
{
if (!run_env_en)
return;
if (current != &main_stack_context)
{
/* We are allowed to jump only in the same stack.
First switch back to the main thread. */
need_longjmp = val;
SwitchToFiber (main_stack_context.fiber);
}
else
longjmp (run_env, val);
}
extern void grt_stack_error_grow_failed (void);
extern void grt_stack_error_null_access (void);
extern void grt_stack_error_memory_access (void);
extern void grt_overflow_error (void);
static EXCEPTION_DISPOSITION
ghdl_SEH_handler (struct _EXCEPTION_RECORD* ExceptionRecord,
void *EstablisherFrame,
struct _CONTEXT* ContextRecord,
void *DispatcherContext)
{
const char *msg = "";
switch (ExceptionRecord->ExceptionCode)
{
case EXCEPTION_ACCESS_VIOLATION:
if (ExceptionRecord->ExceptionInformation[1] == 0)
grt_stack_error_null_access ();
else
grt_stack_error_memory_access ();
break;
case EXCEPTION_FLT_DENORMAL_OPERAND:
case EXCEPTION_FLT_DIVIDE_BY_ZERO:
case EXCEPTION_FLT_INVALID_OPERATION:
case EXCEPTION_FLT_OVERFLOW:
case EXCEPTION_FLT_STACK_CHECK:
case EXCEPTION_FLT_UNDERFLOW:
msg = "floating point error";
break;
case EXCEPTION_INT_DIVIDE_BY_ZERO:
msg = "division by 0";
break;
case EXCEPTION_INT_OVERFLOW:
grt_overflow_error ();
break;
case EXCEPTION_STACK_OVERFLOW:
msg = "stack overflow";
break;
default:
msg = "unknown reason";
break;
}
/* FIXME: is it correct? */
fprintf (stderr, "exception raised: %s\n", msg);
__ghdl_maybe_return_via_longjump (1);
return 0; /* This is never reached, avoid compiler warning */
}
int
__ghdl_run_through_longjump (int (*func)(void))
{
int res;
struct exception_registration er;
struct exception_registration *prev;
/* Get current handler. */
asm ("mov %%fs:(0),%0" : "=r" (prev));
/* Build regisration. */
er.prev = prev;
er.handler = ghdl_SEH_handler;
/* Register. */
asm ("mov %0,%%fs:(0)" : : "r" (&er));
run_env_en = 1;
res = setjmp (run_env);
if (res == 0)
res = (*func)();
run_env_en = 0;
/* Restore. */
asm ("mov %0,%%fs:(0)" : : "r" (prev));
return res;
}
#include <math.h>
double acosh (double x)
{
return log (x + sqrt (x*x - 1));
}
double asinh (double x)
{
return log (x + sqrt (x*x + 1));
}
double atanh (double x)
{
return log ((1 + x) / (1 - x)) / 2;
}
#ifndef WITH_GNAT_RUN_TIME
void __gnat_raise_storage_error(void)
{
abort ();
}
void __gnat_raise_program_error(void)
{
abort ();
}
#endif
|
