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
|
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
|
+
+
-
+
-
+
+
+
-
+
+
-
-
+
+
|
* LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
* file.
*/
#include "config.h"
#include <stdint.h>
#include <stdlib.h>
#include <xmmintrin.h>
#import "OFInvocation.h"
#import "OFMethodSignature.h"
#import "OFInvalidFormatException.h"
#import "OFOutOfMemoryException.h"
#define NUM_GPR_IN 6
#define NUM_GPR_OUT 2
#define NUM_SSE_IN 8
#define NUM_SSE_OUT 2
struct registers {
struct call_context {
uint64_t gpr[NUM_GPR_IN + NUM_GPR_OUT];
__m128 sse[NUM_SSE_IN];
uint8_t num_sse;
uint8_t num_sse_used;
uint64_t stack_size;
uint64_t stack[];
};
extern void of_invocation_call(struct registers *);
extern void of_invocation_call(struct call_context *);
void
of_invocation_invoke(OFInvocation *invocation)
{
OFMethodSignature *methodSignature = [invocation methodSignature];
size_t numberOfArguments = [methodSignature numberOfArguments];
struct call_context *context;
const char *typeEncoding;
struct registers registers;
memset(®isters, '\0', sizeof(registers));
if ((context = calloc(sizeof(*context), 1)) == NULL)
@throw [OFOutOfMemoryException exception];
for (size_t i = 0; i < numberOfArguments; i++) {
union {
uint64_t gpr;
__m128 sse;
} value;
enum {
|
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
|
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
|
+
-
-
-
-
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
-
-
-
-
-
-
-
-
-
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
-
-
-
-
-
-
+
+
+
+
+
+
-
+
-
+
+
-
+
+
+
|
/* TODO: '{' */
/* TODO: '(' */
CASE_GPR('^', uintptr_t)
#ifndef __STDC_NO_COMPLEX__
/* TODO: 'j' */
#endif
default:
free(context);
@throw [OFInvalidFormatException exception];
#undef CASE_GPR
}
if (valueType == VALUE_GPR) {
if (currentGPR < NUM_GPR_IN)
registers.gpr[currentGPR++] = value.gpr;
else
/* TODO */
abort();
context->gpr[currentGPR++] = value.gpr;
else {
struct call_context *newContext;
context->stack_size++;
newContext = realloc(context,
sizeof(*context) + context->stack_size * 8);
if (newContext == NULL) {
free(context);
@throw [OFOutOfMemoryException
exceptionWithRequestedSize:
sizeof(*context) +
context->stack_size * 8];
}
context = newContext;
context->stack[context->stack_size - 1] =
value.gpr;
}
} else if (valueType == VALUE_SSE) {
if (currentSSE < NUM_SSE_IN) {
registers.sse[currentSSE++] = value.sse;
registers.num_sse++;
} else
/* TODO */
abort();
}
}
of_invocation_call(®isters);
context->sse[currentSSE++] = value.sse;
context->num_sse_used++;
} else {
struct call_context *newContext;
double tmp;
context->stack_size++;
newContext = realloc(context,
sizeof(*context) + context->stack_size * 8);
if (newContext == NULL) {
free(context);
@throw [OFOutOfMemoryException
exceptionWithRequestedSize:
sizeof(*context) +
context->stack_size * 8];
}
context = newContext;
_mm_store_sd(&tmp, value.sse);
memcpy(&context->stack[context->stack_size - 1],
&tmp, 8);
}
}
}
of_invocation_call(context);
typeEncoding = [methodSignature methodReturnType];
if (*typeEncoding == 'r')
typeEncoding++;
switch (*typeEncoding) {
#define CASE_GPR(encoding, type) \
case encoding: \
{ \
type tmp = (type)registers.gpr[NUM_GPR_IN]; \
[invocation setReturnValue: &tmp]; \
} \
#define CASE_GPR(encoding, type) \
case encoding: \
{ \
type tmp = (type)context->gpr[NUM_GPR_IN]; \
[invocation setReturnValue: &tmp]; \
} \
break;
CASE_GPR('c', char)
CASE_GPR('C', unsigned char)
CASE_GPR('i', int)
CASE_GPR('I', unsigned int)
CASE_GPR('s', short)
CASE_GPR('S', unsigned short)
CASE_GPR('l', long)
CASE_GPR('L', unsigned long)
CASE_GPR('q', long long)
CASE_GPR('Q', unsigned long long)
#ifdef __SIZEOF_INT128__
/* TODO: 't' */
/* TODO: 'T' */
#endif
case 'f':
{
float tmp;
_mm_store_ss(&tmp, registers.sse[0]);
_mm_store_ss(&tmp, context->sse[0]);
[invocation setReturnValue: &tmp];
}
break;
case 'd':
{
double tmp;
_mm_store_sd(&tmp, registers.sse[0]);
_mm_store_sd(&tmp, context->sse[0]);
[invocation setReturnValue: &tmp];
}
break;
/* TODO: 'D' */
CASE_GPR('B', _Bool)
CASE_GPR('*', uintptr_t)
CASE_GPR('@', uintptr_t)
CASE_GPR('#', uintptr_t)
CASE_GPR(':', uintptr_t)
/* TODO: '[' */
/* TODO: '{' */
/* TODO: '(' */
CASE_GPR('^', uintptr_t)
#ifndef __STDC_NO_COMPLEX__
/* TODO: 'j' */
#endif
default:
free(context);
@throw [OFInvalidFormatException exception];
#undef CASE_GPR
}
}
|