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https://github.com/espressif/esp-idf.git
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51 lines
1.9 KiB
C
51 lines
1.9 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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// 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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#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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