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
|
/*
Title: poly_specific.cpp - Poly/ML specific RTS calls.
Copyright (c) 2006 David C. J. Matthews
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/* This module is used for various run-time calls that are either in the
PolyML structure or otherwise specific to Poly/ML. */
#ifdef WIN32
#include "winconfig.h"
#else
#include "config.h"
#endif
#ifdef HAVE_ASSERT_H
#include <assert.h>
#endif
#include "globals.h"
#include "poly_specific.h"
#include "arb.h"
#include "mpoly.h"
#include "sys.h"
#include "machine_dep.h"
#include "polystring.h"
#include "run_time.h"
#include "version.h"
#include "save_vec.h"
#include "exporter.h"
#include "version.h"
#include "sharedata.h"
#include "objsize.h"
#include "memmgr.h"
#include "processes.h"
#include "savestate.h"
#define SAVE(x) taskData->saveVec.push(x)
static const char *poly_runtime_system_copyright =
"Copyright (c) 2002-7 CUTS, David C.J. Matthews and contributors.";
Handle poly_dispatch_c(TaskData *taskData, Handle args, Handle code)
{
int c = get_C_long(taskData, DEREFWORDHANDLE(code));
switch (c)
{
case 1:
return exportNative(taskData, args); // Export
case 2:
raise_syscall(taskData, "C Export has been withdrawn", 0);
return 0;
case 3:
return exportPortable(taskData, args); // Export as portable format
case 10: // Return the RTS version string.
{
const char *version;
switch (machineDependent->MachineArchitecture())
{
case MA_Interpreted: version = "Portable-" TextVersion; break;
case MA_I386: version = "I386-" TextVersion; break;
case MA_PPC: version = "PPC-" TextVersion; break;
case MA_Sparc: version = "Sparc-" TextVersion; break;
case MA_X86_64: version = "X86_64-" TextVersion; break;
default: version = "Unknown-" TextVersion; break;
}
return SAVE(C_string_to_Poly(taskData, version));
}
case 11: // Return the RTS copyright string
return SAVE(C_string_to_Poly(taskData, poly_runtime_system_copyright));
case 12: // Return the architecture
{
const char *arch;
switch (machineDependent->MachineArchitecture())
{
case MA_Interpreted: arch = "Interpreted"; break;
case MA_I386: arch = "I386"; break;
case MA_PPC: arch = "PPC"; break;
case MA_Sparc: arch = "SPARC"; break;
case MA_X86_64: arch = "X86_64"; break;
default: arch = "Unknown"; break;
}
return SAVE(C_string_to_Poly(taskData, arch));
}
case 13: // Share common immutable data.
{
ShareData(taskData, args);
return SAVE(TAGGED(0));
}
// ObjSize and ShowSize have their own IO vector entries but really they don't
// need them. Include them here and add ObjProfile.
case 14:
return ObjSize(taskData, args);
case 15:
return ShowSize(taskData, args);
case 16:
return ObjProfile(taskData, args);
/* 17 and 18 are no longer used. */
case 19: // Return the RTS argument help string.
return SAVE(C_string_to_Poly(taskData, RTSArgHelp()));
case 20: // Write a saved state file.
return SaveState(taskData, args);
case 21: // Load a saved state file and any ancestors.
return LoadState(taskData, args);
case 22: // Show the hierarchy.
return ShowHierarchy(taskData);
case 23: // Change the name of the immediate parent stored in a child
return RenameParent(taskData, args);
case 24: // Return the name of the immediate parent stored in a child
return ShowParent(taskData, args);
// These next ones were originally in process_env and have now been moved here,
case 100: /* Return the maximum word segment size. */
return Make_arbitrary_precision(taskData, MAX_OBJECT_SIZE);
case 101: /* Return the maximum string size (in bytes).
It is the maximum number of bytes in a segment
less one word for the length field. */
return Make_arbitrary_precision(taskData,
(MAX_OBJECT_SIZE)*sizeof(PolyWord) - sizeof(PolyWord));
case 102: /* Test whether the supplied address is in the io area.
This was previously done by having get_flags return
256 but this was changed so that get_flags simply
returns the top byte of the length word. */
{
PolyWord *pt = (PolyWord*)DEREFWORDHANDLE(args);
if (gMem.IsIOPointer(pt))
return Make_arbitrary_precision(taskData, 1);
else return Make_arbitrary_precision(taskData, 0);
}
case 103: /* Return the register mask for the given function.
This is used by the code-generator to find out
which registers are modified by the function and
so need to be saved if they are used by the caller. */
{
PolyObject *pt = DEREFWORDHANDLE(args);
if (gMem.IsIOPointer(pt))
{
/* IO area. We need to get this from the vector. */
int i;
for (i=0; i < POLY_SYS_vecsize; i++)
{
if (pt == (PolyObject*)IoEntry(i))
{
return Make_arbitrary_precision(taskData,
machineDependent->GetIOFunctionRegisterMask(i));
}
}
raise_syscall(taskData, "Io pointer not found", 0);
}
else
{
/* We may have a pointer to the code or a pointer to
a closure. If it's a closure we have to find the
code. */
if (! pt->IsCodeObject() && ! pt->IsByteObject())
pt = pt->Get(0).AsObjPtr();
/* Should now be a code object. */
if (pt->IsCodeObject())
{
/* Compiled code. This is the second constant in the
constant area. */
PolyWord *codePt = pt->ConstPtrForCode();
PolyWord mask = codePt[1];
/* A real mask will be an integer. For backwards
compatibility if we find something that isn't we
treat it as all registers. */
if (IS_INT(mask))
{
return SAVE(mask);
}
else return Make_arbitrary_precision(taskData, -1);
}
else raise_syscall(taskData, "Not a code pointer", 0);
}
}
case 104: return Make_arbitrary_precision(taskData, POLY_version_number);
case 105: /* Get the name of the function. */
{
PolyObject *pt = DEREFWORDHANDLE(args);
if (gMem.IsIOPointer(pt))
{
/* IO area. */
int i;
for (i=0; i < POLY_SYS_vecsize; i++)
{
if (pt == (PolyObject*)IoEntry(i))
{
char buff[8];
sprintf(buff, "RTS%d", i);
return SAVE(C_string_to_Poly(taskData, buff));
}
}
raise_syscall(taskData, "Io pointer not found", 0);
}
else if (pt->IsCodeObject()) /* Should now be a code object. */
{
/* Compiled code. This is the first constant in the constant area. */
PolyWord *codePt = pt->ConstPtrForCode();
PolyWord name = codePt[0];
/* May be zero indicating an anonymous segment - return null string. */
if (name == PolyWord::FromUnsigned(0))
return SAVE(C_string_to_Poly(taskData, ""));
else return SAVE(name);
}
else raise_syscall(taskData, "Not a code pointer", 0);
}
default:
{
char msg[100];
sprintf(msg, "Unknown poly-specific function: %d", c);
raise_exception_string(taskData, EXC_Fail, msg);
return 0;
}
}
}
|
