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|
/*
+----------------------------------------------------------------------+
| PHP Version 7 |
+----------------------------------------------------------------------+
| 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"
#include "ext/standard/php_string.h"
ZEND_EXTERN_MODULE_GLOBALS(phpdbg);
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: {
zend_string *var = ops->vars[EX_VAR_TO_NUM(op->var)];
asprintf(&decode, "$%.*s%c", var->len <= 19 ? (int) var->len : 18, var->val, var->len <= 19 ? 0 : '+');
} 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: {
zval *literal = RT_CONSTANT(ops, *op);
switch (Z_TYPE_P(literal)) {
case IS_UNDEF:
decode = zend_strndup("", 0);
break;
case IS_NULL:
decode = zend_strndup(ZEND_STRL("null"));
break;
case IS_FALSE:
decode = zend_strndup(ZEND_STRL("false"));
break;
case IS_TRUE:
decode = zend_strndup(ZEND_STRL("true"));
break;
case IS_LONG:
asprintf(&decode, ZEND_ULONG_FMT, Z_LVAL_P(literal));
break;
case IS_DOUBLE:
asprintf(&decode, "%.*G", 14, Z_DVAL_P(literal));
break;
case IS_STRING: {
int i;
zend_string *str = php_addcslashes(Z_STR_P(literal), 0, "\\\"", 2);
for (i = 0; i < str->len; i++) {
if (str->val[i] < 32) {
str->val[i] = ' ';
}
}
asprintf(&decode, "\"%.*s\"%c", str->len <= 18 ? (int) str->len : 17, str->val, str->len <= 18 ? 0 : '+');
zend_string_release(str);
} break;
case IS_RESOURCE:
asprintf(&decode, "Rsrc #%d", Z_RES_HANDLE_P(literal));
break;
case IS_ARRAY:
asprintf(&decode, "array(%d)", zend_hash_num_elements(Z_ARR_P(literal)));
break;
case IS_OBJECT: {
zend_string *str = Z_OBJCE_P(literal)->name;
asprintf(&decode, "%.*s%c", str->len <= 18 ? (int) str->len : 18, str->val, str->len <= 18 ? 0 : '+');
} break;
case IS_CONSTANT:
decode = zend_strndup(ZEND_STRL("<constant>"));
break;
case IS_CONSTANT_AST:
decode = zend_strndup(ZEND_STRL("<ast>"));
break;
default:
asprintf(&decode, "unknown type: %d", Z_TYPE_P(literal));
break;
}
} 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:
case ZEND_GOTO:
case ZEND_FAST_CALL:
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:
case ZEND_JMP_SET:
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";
} /* }}} */
|
