kopia lustrzana https://github.com/espressif/esp-idf
84 wiersze
2.2 KiB
C
84 wiersze
2.2 KiB
C
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// Copyright 2020 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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/**
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* @file DWARF Exception Frames parser header
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*
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* This file describes the frame types for x86, required for
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* parsing `eh_frame` and `eh_frame_hdr`.
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*/
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#ifndef EH_FRAME_PARSER_IMPL_H
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#define EH_FRAME_PARSER_IMPL_H
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#include <stdint.h>
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#include <stddef.h>
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/**
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* @brief Number of registers in the ExecutionFrame structure.
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*/
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#define EXECUTION_FRAME_MAX_REGS (11)
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/**
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* @brief Definition of the x86 DWARF tegisters set.
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* The following registers order has been taken from GCC's `i386.c` file:
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*/
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typedef struct x86ExcFrame
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{
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union {
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struct {
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uint32_t eax;
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uint32_t ecx;
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uint32_t edx;
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uint32_t ebx;
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uint32_t esp;
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uint32_t ebp;
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uint32_t esi;
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uint32_t edi;
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uint32_t eip;
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uint32_t eflags;
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uint32_t trapno;
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};
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uint32_t registers[EXECUTION_FRAME_MAX_REGS];
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};
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} x86ExcFrame;
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/**
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* @brief Define the Executionframe as RvExcFrame for this implementation.
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*/
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typedef x86ExcFrame ExecutionFrame;
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/**
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* @brief Reference the PC register of the execution frame
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*/
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#define EXECUTION_FRAME_PC(struct) ((struct).eip)
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/**
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* @brief Reference the SP register of the execution frame
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*/
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#define EXECUTION_FRAME_SP(struct) ((struct).esp)
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/**
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* @brief Index of SP register in the execution frame.
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*/
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#define EXECUTION_FRAME_SP_REG (offsetof(x86ExcFrame, esp)/sizeof(uint32_t))
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/**
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* @brief Get register i of the execution frame
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*/
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#define EXECUTION_FRAME_REG(frame, i) ((frame)->registers[(i)])
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#endif // _EH_FRAME_PARSER_IMPL_H
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