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
|
/*
* TCG Backend Data: constant pool.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
typedef struct TCGLabelPoolData {
struct TCGLabelPoolData *next;
tcg_insn_unit *label;
intptr_t addend;
int rtype;
unsigned nlong;
tcg_target_ulong data[];
} TCGLabelPoolData;
static TCGLabelPoolData *new_pool_alloc(TCGContext *s, int nlong, int rtype,
tcg_insn_unit *label, intptr_t addend)
{
TCGLabelPoolData *n = tcg_malloc(sizeof(TCGLabelPoolData)
+ sizeof(tcg_target_ulong) * nlong);
n->label = label;
n->addend = addend;
n->rtype = rtype;
n->nlong = nlong;
return n;
}
static void new_pool_insert(TCGContext *s, TCGLabelPoolData *n)
{
TCGLabelPoolData *i, **pp;
int nlong = n->nlong;
/* Insertion sort on the pool. */
for (pp = &s->pool_labels; (i = *pp) != NULL; pp = &i->next) {
if (nlong > i->nlong) {
break;
}
if (nlong < i->nlong) {
continue;
}
if (memcmp(n->data, i->data, sizeof(tcg_target_ulong) * nlong) >= 0) {
break;
}
}
n->next = *pp;
*pp = n;
}
/* The "usual" for generic integer code. */
static inline void new_pool_label(TCGContext *s, tcg_target_ulong d, int rtype,
tcg_insn_unit *label, intptr_t addend)
{
TCGLabelPoolData *n = new_pool_alloc(s, 1, rtype, label, addend);
n->data[0] = d;
new_pool_insert(s, n);
}
/* For v64 or v128, depending on the host. */
static inline void new_pool_l2(TCGContext *s, int rtype, tcg_insn_unit *label,
intptr_t addend, tcg_target_ulong d0,
tcg_target_ulong d1)
{
TCGLabelPoolData *n = new_pool_alloc(s, 2, rtype, label, addend);
n->data[0] = d0;
n->data[1] = d1;
new_pool_insert(s, n);
}
/* For v128 or v256, depending on the host. */
static inline void new_pool_l4(TCGContext *s, int rtype, tcg_insn_unit *label,
intptr_t addend, tcg_target_ulong d0,
tcg_target_ulong d1, tcg_target_ulong d2,
tcg_target_ulong d3)
{
TCGLabelPoolData *n = new_pool_alloc(s, 4, rtype, label, addend);
n->data[0] = d0;
n->data[1] = d1;
n->data[2] = d2;
n->data[3] = d3;
new_pool_insert(s, n);
}
/* For v256, for 32-bit host. */
static inline void new_pool_l8(TCGContext *s, int rtype, tcg_insn_unit *label,
intptr_t addend, tcg_target_ulong d0,
tcg_target_ulong d1, tcg_target_ulong d2,
tcg_target_ulong d3, tcg_target_ulong d4,
tcg_target_ulong d5, tcg_target_ulong d6,
tcg_target_ulong d7)
{
TCGLabelPoolData *n = new_pool_alloc(s, 8, rtype, label, addend);
n->data[0] = d0;
n->data[1] = d1;
n->data[2] = d2;
n->data[3] = d3;
n->data[4] = d4;
n->data[5] = d5;
n->data[6] = d6;
n->data[7] = d7;
new_pool_insert(s, n);
}
/* To be provided by cpu/tcg-target.inc.c. */
static void tcg_out_nop_fill(tcg_insn_unit *p, int count);
static bool tcg_out_pool_finalize(TCGContext *s)
{
TCGLabelPoolData *p = s->pool_labels;
TCGLabelPoolData *l = NULL;
void *a;
if (p == NULL) {
return true;
}
/* ??? Round up to qemu_icache_linesize, but then do not round
again when allocating the next TranslationBlock structure. */
a = (void *)ROUND_UP((uintptr_t)s->code_ptr,
sizeof(tcg_target_ulong) * p->nlong);
tcg_out_nop_fill(s->code_ptr, (tcg_insn_unit *)a - s->code_ptr);
s->data_gen_ptr = a;
for (; p != NULL; p = p->next) {
size_t size = sizeof(tcg_target_ulong) * p->nlong;
if (!l || l->nlong != p->nlong || memcmp(l->data, p->data, size)) {
if (unlikely(a > s->code_gen_highwater)) {
return false;
}
memcpy(a, p->data, size);
a += size;
l = p;
}
patch_reloc(p->label, p->rtype, (intptr_t)a - size, p->addend);
}
s->code_ptr = a;
return true;
}
|
