esp-idf/components/espcoredump/corefile/riscv.py

63 lines
2.0 KiB
Python

#
# Copyright 2021 Espressif Systems (Shanghai) CO., 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.
#
from construct import Int16ul, Int32ul, Padding, Struct
from corefile import BaseArchMethodsMixin, BaseTargetMethods, ESPCoreDumpLoaderError
try:
from typing import Any, Optional, Tuple
except ImportError:
pass
RISCV_GP_REGS_COUNT = 32
PRSTATUS_SIZE = 204
PRSTATUS_OFFSET_PR_CURSIG = 12
PRSTATUS_OFFSET_PR_PID = 24
PRSTATUS_OFFSET_PR_REG = 72
ELF_GREGSET_T_SIZE = 128
PrStruct = Struct(
Padding(PRSTATUS_OFFSET_PR_CURSIG),
'pr_cursig' / Int16ul,
Padding(PRSTATUS_OFFSET_PR_PID - PRSTATUS_OFFSET_PR_CURSIG - Int16ul.sizeof()),
'pr_pid' / Int32ul,
Padding(PRSTATUS_OFFSET_PR_REG - PRSTATUS_OFFSET_PR_PID - Int32ul.sizeof()),
'regs' / Int32ul[RISCV_GP_REGS_COUNT],
Padding(PRSTATUS_SIZE - PRSTATUS_OFFSET_PR_REG - ELF_GREGSET_T_SIZE)
)
class RiscvMethodsMixin(BaseArchMethodsMixin):
@staticmethod
def get_registers_from_stack(data, grows_down):
# type: (bytes, bool) -> Tuple[list[int], Optional[dict[int, int]]]
regs = Int32ul[RISCV_GP_REGS_COUNT].parse(data)
if not grows_down:
raise ESPCoreDumpLoaderError('Growing up stacks are not supported for now!')
return regs, None
@staticmethod
def build_prstatus_data(tcb_addr, task_regs): # type: (int, list[int]) -> Any
return PrStruct.build({
'pr_cursig': 0,
'pr_pid': tcb_addr,
'regs': task_regs,
})
class Esp32c3Methods(BaseTargetMethods, RiscvMethodsMixin):
TARGET = 'esp32c3'