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
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
|
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43440
--- gcc-4.4.4.orig/gcc/config/arm/aout.h
+++ gcc-4.4.4/gcc/config/arm/aout.h
@@ -163,34 +163,49 @@
{"mvdx12", 39}, \
{"mvdx13", 40}, \
{"mvdx14", 41}, \
- {"mvdx15", 42}, \
- {"d0", 63}, {"q0", 63}, \
- {"d1", 65}, \
- {"d2", 67}, {"q1", 67}, \
- {"d3", 69}, \
- {"d4", 71}, {"q2", 71}, \
- {"d5", 73}, \
- {"d6", 75}, {"q3", 75}, \
- {"d7", 77}, \
- {"d8", 79}, {"q4", 79}, \
- {"d9", 81}, \
- {"d10", 83}, {"q5", 83}, \
- {"d11", 85}, \
- {"d12", 87}, {"q6", 87}, \
- {"d13", 89}, \
- {"d14", 91}, {"q7", 91}, \
- {"d15", 93}, \
- {"q8", 95}, \
- {"q9", 99}, \
- {"q10", 103}, \
- {"q11", 107}, \
- {"q12", 111}, \
- {"q13", 115}, \
- {"q14", 119}, \
- {"q15", 123} \
+ {"mvdx15", 42} \
}
#endif
+#ifndef OVERLAPPING_REGISTER_NAMES
+#define OVERLAPPING_REGISTER_NAMES \
+{ \
+ {"d0", 63, 2}, \
+ {"d1", 65, 2}, \
+ {"d2", 67, 2}, \
+ {"d3", 69, 2}, \
+ {"d4", 71, 2}, \
+ {"d5", 73, 2}, \
+ {"d6", 75, 2}, \
+ {"d7", 77, 2}, \
+ {"d8", 79, 2}, \
+ {"d9", 81, 2}, \
+ {"d10", 83, 2}, \
+ {"d11", 85, 2}, \
+ {"d12", 87, 2}, \
+ {"d13", 89, 2}, \
+ {"d14", 91, 2}, \
+ {"d15", 93, 2}, \
+ {"q0", 63, 4}, \
+ {"q1", 67, 4}, \
+ {"q2", 71, 4}, \
+ {"q3", 75, 4}, \
+ {"q4", 79, 4}, \
+ {"q5", 83, 4}, \
+ {"q6", 87, 4}, \
+ {"q7", 91, 4}, \
+ {"q8", 95, 4}, \
+ {"q9", 99, 4}, \
+ {"q10", 103, 4}, \
+ {"q11", 107, 4}, \
+ {"q12", 111, 4}, \
+ {"q13", 115, 4}, \
+ {"q14", 119, 4}, \
+ {"q15", 123, 4} \
+}
+#endif
+
+
#ifndef NO_DOLLAR_IN_LABEL
#define NO_DOLLAR_IN_LABEL 1
#endif
--- gcc-4.4.4.orig/gcc/output.h
+++ gcc-4.4.4/gcc/output.h
@@ -169,6 +169,11 @@
Prefixes such as % are optional. */
extern int decode_reg_name (const char *);
+/* Similar to decode_reg_name, but takes an extra parameter that is a
+ pointer to the number of (internal) registers described by the
+ external name. */
+extern int decode_reg_name_and_count (const char *, int *);
+
extern void assemble_alias (tree, tree);
extern void default_assemble_visibility (tree, int);
--- gcc-4.4.4.orig/gcc/reginfo.c
+++ gcc-4.4.4/gcc/reginfo.c
@@ -800,39 +800,44 @@
fix_register (const char *name, int fixed, int call_used)
{
int i;
+ int reg, nregs;
/* Decode the name and update the primary form of
the register info. */
-
- if ((i = decode_reg_name (name)) >= 0)
+ if ((reg = decode_reg_name_and_count (name, &nregs)) >= 0)
{
- if ((i == STACK_POINTER_REGNUM
+ gcc_assert (nregs >= 1);
+ for (i = reg; i < reg + nregs; i++)
+ {
+ if ((i == STACK_POINTER_REGNUM
#ifdef HARD_FRAME_POINTER_REGNUM
- || i == HARD_FRAME_POINTER_REGNUM
+ || i == HARD_FRAME_POINTER_REGNUM
#else
- || i == FRAME_POINTER_REGNUM
+ || i == FRAME_POINTER_REGNUM
#endif
- )
- && (fixed == 0 || call_used == 0))
- {
- static const char * const what_option[2][2] = {
- { "call-saved", "call-used" },
- { "no-such-option", "fixed" }};
+ )
+ && (fixed == 0 || call_used == 0))
+ {
+ static const char * const what_option[2][2] = {
+ { "call-saved", "call-used" },
+ { "no-such-option", "fixed" }};
- error ("can't use '%s' as a %s register", name,
- what_option[fixed][call_used]);
- }
- else
- {
- fixed_regs[i] = fixed;
- call_used_regs[i] = call_used;
+ error ("can't use '%s' as a %s register", name,
+ what_option[fixed][call_used]);
+ }
+ else
+ {
+ fixed_regs[i] = fixed;
+ call_used_regs[i] = call_used;
#ifdef CALL_REALLY_USED_REGISTERS
- if (fixed == 0)
- call_really_used_regs[i] = call_used;
+ if (fixed == 0)
+ call_really_used_regs[i] = call_used;
#endif
- }
- }
- else
+ }
+ }
+ }
+ else
+
{
warning (0, "unknown register name: %s", name);
}
--- gcc-4.4.4.orig/gcc/stmt.c
+++ gcc-4.4.4/gcc/stmt.c
@@ -681,13 +681,14 @@
for (tail = clobbers; tail; tail = TREE_CHAIN (tail))
{
const char *regname;
+ int nregs;
if (TREE_VALUE (tail) == error_mark_node)
return;
regname = TREE_STRING_POINTER (TREE_VALUE (tail));
- i = decode_reg_name (regname);
- if (i >= 0 || i == -4)
+ i = decode_reg_name_and_count (regname, &nregs);
+ if (i == -4)
++nclobbers;
else if (i == -2)
error ("unknown register name %qs in %<asm%>", regname);
@@ -695,14 +696,21 @@
/* Mark clobbered registers. */
if (i >= 0)
{
- /* Clobbering the PIC register is an error. */
- if (i == (int) PIC_OFFSET_TABLE_REGNUM)
- {
- error ("PIC register %qs clobbered in %<asm%>", regname);
- return;
- }
+ int reg;
- SET_HARD_REG_BIT (clobbered_regs, i);
+ for (reg = i; reg < i + nregs; reg++)
+ {
+ ++nclobbers;
+
+ /* Clobbering the PIC register is an error. */
+ if (reg == (int) PIC_OFFSET_TABLE_REGNUM)
+ {
+ error ("PIC register clobbered by %qs in %<asm%>", regname);
+ return;
+ }
+
+ SET_HARD_REG_BIT (clobbered_regs, reg);
+ }
}
}
@@ -1012,8 +1020,9 @@
for (tail = clobbers; tail; tail = TREE_CHAIN (tail))
{
const char *regname = TREE_STRING_POINTER (TREE_VALUE (tail));
- int j = decode_reg_name (regname);
- rtx clobbered_reg;
+ int reg, nregs;
+ int j = decode_reg_name_and_count (regname, &nregs);
+ rtx clobbered_reg;
if (j < 0)
{
@@ -1033,31 +1042,40 @@
/* Ignore unknown register, error already signaled. */
continue;
}
-
- /* Use QImode since that's guaranteed to clobber just one reg. */
- clobbered_reg = gen_rtx_REG (QImode, j);
-
- /* Do sanity check for overlap between clobbers and respectively
- input and outputs that hasn't been handled. Such overlap
- should have been detected and reported above. */
- if (!clobber_conflict_found)
- {
- int opno;
-
- /* We test the old body (obody) contents to avoid tripping
- over the under-construction body. */
- for (opno = 0; opno < noutputs; opno++)
- if (reg_overlap_mentioned_p (clobbered_reg, output_rtx[opno]))
- internal_error ("asm clobber conflict with output operand");
-
- for (opno = 0; opno < ninputs - ninout; opno++)
- if (reg_overlap_mentioned_p (clobbered_reg,
- ASM_OPERANDS_INPUT (obody, opno)))
- internal_error ("asm clobber conflict with input operand");
+
+ for (reg = j; reg < j + nregs; reg++)
+ {
+ /* Use QImode since that's guaranteed to clobber just
+ * one reg. */
+ clobbered_reg = gen_rtx_REG (QImode, reg);
+
+ /* Do sanity check for overlap between clobbers and
+ respectively input and outputs that hasn't been
+ handled. Such overlap should have been detected and
+ reported above. */
+ if (!clobber_conflict_found)
+ {
+ int opno;
+
+ /* We test the old body (obody) contents to avoid
+ tripping over the under-construction body. */
+ for (opno = 0; opno < noutputs; opno++)
+ if (reg_overlap_mentioned_p (clobbered_reg,
+ output_rtx[opno]))
+ internal_error
+ ("asm clobber conflict with output operand");
+
+ for (opno = 0; opno < ninputs - ninout; opno++)
+ if (reg_overlap_mentioned_p (clobbered_reg,
+ ASM_OPERANDS_INPUT (obody,
+ opno)))
+ internal_error
+ ("asm clobber conflict with input operand");
+ }
+
+ XVECEXP (body, 0, i++)
+ = gen_rtx_CLOBBER (VOIDmode, clobbered_reg);
}
-
- XVECEXP (body, 0, i++)
- = gen_rtx_CLOBBER (VOIDmode, clobbered_reg);
}
emit_insn (body);
--- gcc-4.4.4.orig/gcc/varasm.c
+++ gcc-4.4.4/gcc/varasm.c
@@ -1031,8 +1031,11 @@
Prefixes such as % are optional. */
int
-decode_reg_name (const char *asmspec)
+decode_reg_name_and_count (const char *asmspec, int *pnregs)
{
+ /* Presume just one register is clobbered. */
+ *pnregs = 1;
+
if (asmspec != 0)
{
int i;
@@ -1058,6 +1061,25 @@
&& ! strcmp (asmspec, strip_reg_name (reg_names[i])))
return i;
+#ifdef OVERLAPPING_REGISTER_NAMES
+ {
+ static const struct
+ {
+ const char *const name;
+ const int number;
+ const int nregs;
+ } table[] = OVERLAPPING_REGISTER_NAMES;
+
+ for (i = 0; i < (int) ARRAY_SIZE (table); i++)
+ if (table[i].name[0]
+ && ! strcmp (asmspec, table[i].name))
+ {
+ *pnregs = table[i].nregs;
+ return table[i].number;
+ }
+ }
+#endif /* OVERLAPPING_REGISTER_NAMES */
+
#ifdef ADDITIONAL_REGISTER_NAMES
{
static const struct { const char *const name; const int number; } table[]
@@ -1081,6 +1103,15 @@
return -1;
}
+
+int
+decode_reg_name (const char *name)
+{
+ int count;
+ return decode_reg_name_and_count (name, &count);
+}
+
+
/* Return true if DECL's initializer is suitable for a BSS section. */
|
