kopia lustrzana https://github.com/espressif/esp-idf
41 wiersze
1.4 KiB
C
41 wiersze
1.4 KiB
C
/*
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* SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Unlicense OR CC0-1.0
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*/
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#include <stdio.h>
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#include <unistd.h>
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#include <assert.h>
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#include <string.h>
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/**
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* @brief Symbols defined by the linker.
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* Retrieve the addresses of both .eh_frame_hdr and .eh_frame sections.
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*/
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extern char __eh_frame_hdr;
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extern char __eh_frame_hdr_end;
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extern char __eh_frame;
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extern char __eh_frame_end;
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/**
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* @brief Pointers to both .eh_frame_hdr and .eh_frame sections.
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*/
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#define EH_FRAME_HDR_ADDR ((void*) (&__eh_frame_hdr))
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#define EH_FRAME_HDR_END_ADDR ((void*) (&__eh_frame_hdr_end))
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#define EH_FRAME_ADDR ((void*) (&__eh_frame))
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#define EH_FRAME_END_ADDR ((void*) (&__eh_frame_end))
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void app_main(void)
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{
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/* As soon as this test compiles, it can be considered passed. The linker should
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* test that the eh_frame and eh_frame_hdr sections are not empty but let's make
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* sure again that they are not empty. */
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assert((EH_FRAME_END_ADDR > EH_FRAME_ADDR) && ".eh_frame section must not be empty");
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assert((EH_FRAME_HDR_END_ADDR > EH_FRAME_HDR_ADDR) && ".eh_frame_hdr section must not be empty");
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/* Use the symbols just to make sure they won't be optimized away */
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printf(".eh_frame start: %p, end: %p\n", EH_FRAME_ADDR, EH_FRAME_END_ADDR);
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printf(".eh_frame_hdr start: %p, end: %p\n", EH_FRAME_HDR_ADDR, EH_FRAME_HDR_END_ADDR);
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}
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