mirror of
https://github.com/espressif/ESP8266_RTOS_SDK.git
synced 2025-08-06 15:15:15 +08:00
62 lines
2.0 KiB
C
62 lines
2.0 KiB
C
// Copyright 2019-2020 Espressif Systems (Shanghai) PTE LTD
|
|
//
|
|
// 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.
|
|
|
|
#pragma once
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/**
|
|
* @brief Check if PC pointer locates at code section
|
|
*
|
|
* @param pc the PC pointer
|
|
*
|
|
* @return 1 if valid or 0 if invalid
|
|
*/
|
|
int xt_pc_is_valid(const void *pc);
|
|
|
|
/**
|
|
* @brief Detected recursively and serach the previous PC and SP
|
|
*
|
|
* @param i_pc the PC address for forward recursive detection
|
|
* @param i_sp the SP address for forward recursive detection
|
|
* @param i_lr the LR address, maybe it the previous PC address
|
|
* @param o_pc the detected previous PC address
|
|
* @param o_pc the detected previous SP address
|
|
*
|
|
* @return 1 if found or 0 if not found
|
|
*/
|
|
int xt_retaddr_callee(const void *i_pc, const void *i_sp, const void *i_lr, void **o_pc, void **o_sp);
|
|
|
|
/**
|
|
* @brief These functions may be used to get information about the callers of a function.
|
|
*
|
|
* Using this API instead of "__builtin_return_address".
|
|
*
|
|
* This function returns the return address of the current function, or of one of its callers.
|
|
* The level argument is number of frames to scan up the call stack. A value of 0 yields the
|
|
* return address of the current function, a value of 1 yields the return address of the caller
|
|
* of the current function, and so forth..
|
|
*
|
|
* @param lvl caller level
|
|
*
|
|
* @return the return address of the current function
|
|
*/
|
|
void *xt_return_address(int lvl);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|