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
|
/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2015 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Felipe Pena <felipe@php.net> |
| Authors: Joe Watkins <joe.watkins@live.co.uk> |
| Authors: Bob Weinand <bwoebi@php.net> |
+----------------------------------------------------------------------+
*/
#include "phpdbg.h"
#include "zend_vm_opcodes.h"
#include "zend_compile.h"
#include "phpdbg_opcode.h"
#include "phpdbg_utils.h"
ZEND_EXTERN_MODULE_GLOBALS(phpdbg);
static inline uint32_t phpdbg_decode_literal(zend_op_array *ops, zval *literal) /* {{{ */
{
int iter = 0;
while (iter < ops->last_literal) {
if (literal == &ops->literals[iter]) {
return iter;
}
iter++;
}
return 0;
} /* }}} */
static inline char *phpdbg_decode_op(zend_op_array *ops, znode_op *op, uint32_t type, HashTable *vars) /* {{{ */
{
char *decode = NULL;
switch (type &~ EXT_TYPE_UNUSED) {
case IS_CV:
asprintf(&decode, "$%s", ops->vars[EX_VAR_TO_NUM(op->var)]->val);
break;
case IS_VAR:
case IS_TMP_VAR: {
zend_ulong id = 0, *pid = NULL;
if (vars != NULL) {
if ((pid = zend_hash_index_find_ptr(vars, (zend_ulong) ops->vars - op->var))) {
id = *pid;
} else {
id = zend_hash_num_elements(vars);
zend_hash_index_update_mem(vars, (zend_ulong) ops->vars - op->var, &id, sizeof(zend_ulong));
}
}
asprintf(&decode, "@" ZEND_ULONG_FMT, id);
} break;
case IS_CONST:
asprintf(&decode, "C%u", phpdbg_decode_literal(ops, RT_CONSTANT(ops, *op)));
break;
case IS_UNUSED:
asprintf(&decode, "<unused>");
break;
}
return decode;
} /* }}} */
char *phpdbg_decode_opline(zend_op_array *ops, zend_op *op, HashTable *vars) /*{{{ */
{
char *decode[4] = {NULL, NULL, NULL, NULL};
switch (op->opcode) {
case ZEND_JMP:
#ifdef ZEND_GOTO
case ZEND_GOTO:
#endif
#ifdef ZEND_FAST_CALL
case ZEND_FAST_CALL:
#endif
asprintf(&decode[1], "J%ld", OP_JMP_ADDR(op, op->op1) - ops->opcodes);
goto format;
case ZEND_JMPZNZ:
decode[1] = phpdbg_decode_op(ops, &op->op1, op->op1_type, vars);
asprintf(&decode[2], "J%u or J%" PRIu32, op->op2.opline_num, op->extended_value);
goto result;
case ZEND_JMPZ:
case ZEND_JMPNZ:
case ZEND_JMPZ_EX:
case ZEND_JMPNZ_EX:
#ifdef ZEND_JMP_SET
case ZEND_JMP_SET:
#endif
decode[1] = phpdbg_decode_op(ops, &op->op1, op->op1_type, vars);
asprintf(&decode[2], "J%ld", OP_JMP_ADDR(op, op->op2) - ops->opcodes);
goto result;
case ZEND_RECV_INIT:
goto result;
default: {
decode[1] = phpdbg_decode_op(ops, &op->op1, op->op1_type, vars);
decode[2] = phpdbg_decode_op(ops, &op->op2, op->op2_type, vars);
result:
decode[3] = phpdbg_decode_op(ops, &op->result, op->result_type, vars);
format:
asprintf(&decode[0],
"%-20s %-20s %-20s",
decode[1] ? decode[1] : "",
decode[2] ? decode[2] : "",
decode[3] ? decode[3] : "");
}
}
if (decode[1])
free(decode[1]);
if (decode[2])
free(decode[2]);
if (decode[3])
free(decode[3]);
return decode[0];
} /* }}} */
void phpdbg_print_opline_ex(zend_execute_data *execute_data, HashTable *vars, zend_bool ignore_flags) /* {{{ */
{
/* force out a line while stepping so the user knows what is happening */
if (ignore_flags ||
(!(PHPDBG_G(flags) & PHPDBG_IS_QUIET) ||
(PHPDBG_G(flags) & PHPDBG_IS_STEPPING) ||
(PHPDBG_G(oplog)))) {
zend_op *opline = (zend_op *) execute_data->opline;
char *decode = phpdbg_decode_opline(&execute_data->func->op_array, opline, vars);
if (ignore_flags || (!(PHPDBG_G(flags) & PHPDBG_IS_QUIET) || (PHPDBG_G(flags) & PHPDBG_IS_STEPPING))) {
/* output line info */
phpdbg_notice("opline", "line=\"%u\" opline=\"%p\" opcode=\"%s\" op=\"%s\" file=\"%s\"", "L%-5u %16p %-30s %s %s",
opline->lineno,
opline,
phpdbg_decode_opcode(opline->opcode),
decode,
execute_data->func->op_array.filename ? execute_data->func->op_array.filename->val : "unknown");
}
if (!ignore_flags && PHPDBG_G(oplog)) {
phpdbg_log_ex(fileno(PHPDBG_G(oplog)), "L%-5u %16p %-30s %s %s",
opline->lineno,
opline,
phpdbg_decode_opcode(opline->opcode),
decode,
execute_data->func->op_array.filename ? execute_data->func->op_array.filename->val : "unknown");
}
if (decode) {
free(decode);
}
}
} /* }}} */
void phpdbg_print_opline(zend_execute_data *execute_data, zend_bool ignore_flags) /* {{{ */
{
phpdbg_print_opline_ex(execute_data, NULL, ignore_flags);
} /* }}} */
const char *phpdbg_decode_opcode(zend_uchar opcode) /* {{{ */
{
const char *ret = zend_get_opcode_name(opcode);
return ret?ret:"UNKNOWN";
} /* }}} */
|
