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https://github.com/espressif/esp-idf.git
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43 lines
1.4 KiB
C
43 lines
1.4 KiB
C
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/*
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* SPDX-FileCopyrightText: 2020-2021 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#pragma once
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#include <sys/lock.h>
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#include <sys/reent.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Global variables used by newlib in ROM
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Note that any of these symbols which are used by both ROM & IDF will have duplicate copies
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in each "side" of the memory. However they're all pointers, and the pointers will be to the same
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thing, so it's not a big memory waste and functionality is the same.
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Some variables which look like they should be here, but aren't:
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- __sf_fake_stdin, __sf_fake_stdout, __sf_fake_stderr - These are defined in ROM because ROM includes findfp.c,
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but only used if _REENT_INIT or _REENT_INIT_PTR are ever called and ROM doesn't use these macros anywhere unless
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printf() or similar is called without initializing reent first. ESP-IDF sets up its own minimal reent structures.
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- __lock___sinit_recursive_mutex, etc. - these are combined into common_recursive_mutex & common_mutex to save space
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*/
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typedef struct {
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_LOCK_T common_recursive_mutex;
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_LOCK_T common_mutex;
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struct _reent *global_reent;
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} esp_rom_newlib_global_data_t;
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/* Called from IDF newlib component setup
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to initialize common data shared between ROM and IDF
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*/
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void esp_rom_newlib_init_global_data(const esp_rom_newlib_global_data_t *data);
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#ifdef __cplusplus
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}
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#endif
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