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|
/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2014 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, "@%llu", 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%llu", 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";
} /* }}} */
|
