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
|
/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2003-2016. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* %CopyrightEnd%
*/
#include <stddef.h> /* offsetof() */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "global.h"
#include "hipe_arch.h"
#include "hipe_native_bif.h" /* nbif_callemu() */
/* Flush dcache and invalidate icache for a range of addresses. */
void hipe_flush_icache_range(void *address, unsigned int nbytes)
{
char *a = (char*)address;
int n = nbytes;
while (n > 0) {
hipe_flush_icache_word(a);
a += 4;
n -= 4;
}
}
static void patch_sethi(Uint32 *address, unsigned int imm22)
{
unsigned int insn = *address;
*address = (insn & 0xFFC00000) | (imm22 & 0x003FFFFF);
hipe_flush_icache_word(address);
}
static void patch_ori(Uint32 *address, unsigned int imm10)
{
/* address points to an OR reg,imm,reg insn */
unsigned int insn = *address;
*address = (insn & 0xFFFFE000) | (imm10 & 0x3FF);
hipe_flush_icache_word(address);
}
static void patch_sethi_ori(Uint32 *address, Uint32 value)
{
patch_sethi(address, value >> 10);
patch_ori(address+1, value);
}
void hipe_patch_load_fe(Uint32 *address, Uint32 value)
{
patch_sethi_ori(address, value);
}
int hipe_patch_insn(void *address, Uint32 value, Eterm type)
{
switch (type) {
case am_load_mfa:
case am_atom:
case am_constant:
case am_closure:
case am_c_const:
break;
default:
return -1;
}
patch_sethi_ori((Uint32*)address, value);
return 0;
}
int hipe_patch_call(void *callAddress, void *destAddress, void *trampoline)
{
Uint32 relDest, newI;
if (trampoline)
return -1;
relDest = (Uint32)((Sint32)destAddress - (Sint32)callAddress);
newI = (1 << 30) | (relDest >> 2);
*(Uint32*)callAddress = newI;
hipe_flush_icache_word(callAddress);
return 0;
}
static void *alloc_code(unsigned int alloc_bytes)
{
return erts_alloc(ERTS_ALC_T_HIPE_EXEC, alloc_bytes);
}
void *hipe_alloc_code(Uint nrbytes, Eterm callees, Eterm *trampolines, Process *p)
{
if (is_not_nil(callees))
return NULL;
*trampolines = NIL;
return alloc_code(nrbytes);
}
void hipe_free_code(void* code, unsigned int nrbytes)
{
erts_free(ERTS_ALC_T_HIPE_EXEC, code);
}
void *hipe_make_native_stub(void *callee_exp, unsigned int beamArity)
{
unsigned int *code;
unsigned int callEmuOffset;
int i;
code = alloc_code(5*sizeof(int));
if (!code)
return NULL;
/* sethi %hi(Address), %i4 */
code[0] = 0x39000000 | (((unsigned int)callee_exp >> 10) & 0x3FFFFF);
/* or %g0, %o7, %i3 ! mov %o7, %i3 */
code[1] = 0xB610000F;
/* or %i4, %lo(Address), %i4 */
code[2] = 0xB8172000 | ((unsigned int)callee_exp & 0x3FF);
/* call callemu */
callEmuOffset = (char*)nbif_callemu - (char*)&code[3];
code[3] = (1 << 30) | ((callEmuOffset >> 2) & 0x3FFFFFFF);
/* or %g0, Arity, %i5 ! mov Arity, %i5 */
code[4] = 0xBA102000 | (beamArity & 0x0FFF);
/* flush I-cache as if by write_u32() */
for (i = 0; i < 5; ++i)
hipe_flush_icache_word(&code[i]);
return code;
}
void hipe_free_native_stub(void* stub)
{
erts_free(ERTS_ALC_T_HIPE_EXEC, stub);
}
void hipe_arch_print_pcb(struct hipe_process_state *p)
{
#define U(n,x) \
printf(" % 4d | %s | 0x%0*lx | %*s |\r\n", (int)offsetof(struct hipe_process_state,x), n, 2*(int)sizeof(long), (unsigned long)p->x, 2+2*(int)sizeof(long), "")
U("nra ", nra);
U("narity ", narity);
#undef U
}
|
