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71 lines
2.4 KiB
71 lines
2.4 KiB
/*
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* Copyright 2020 The Pigweed Authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not
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* use this file except in compliance with the License. You may obtain a copy of
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* the License at
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*
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* https://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, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations under
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* the License.
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*/
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/*
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*
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* This linker script snippet declares the sections needed for string
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* tokenization. All sections have type INFO so they are excluded from the final
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* binary.
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*
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* The contents of this script can be copied into an existing linker script.
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* Alternately, this file can be directly included in a linker script with an
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* include directive. For example,
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*
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* INCLUDE path/to/modules/pw_tokenizer/pw_tokenizer_linker_sections.ld
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*
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* SECTIONS
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* {
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* (your existing linker sections)
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* }
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*/
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SECTIONS
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{
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/*
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* This section stores metadata that may be used during tokenized string
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* decoding. This metadata describes properties that may affect how the
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* tokenized string is encoded or decoded -- the maximum length of the hash
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* function and the sizes of certain integer types.
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*
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* Metadata is declared as key-value pairs. See the metadata variable in
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* tokenize.cc for further details.
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*/
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.pw_tokenizer.info 0x0 (INFO) :
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{
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KEEP(*(.pw_tokenizer.info))
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}
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/*
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* Tokenized string entries are stored in this section. Each entry contains
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* the original string literal and the calculated token that represents it. In
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* the compiled code, the token and a compact argument list encoded in a
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* uint32_t are used in place of the format string. The compiled code
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* contains no references to the tokenized string entries in this section.
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*
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* The tokenized string entry format is specified by the
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* pw::tokenizer::internal::Entry class in
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* pw_tokenizer/public/pw_tokenizer/internal/tokenize_string.h.
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*
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* The section contents are declared with KEEP so that they are not removed
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* from the ELF. These are never emitted in the final binary or loaded into
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* memory.
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*/
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.pw_tokenizer.entries 0x0 (INFO) :
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{
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KEEP(*(.pw_tokenizer.entries.*))
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}
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}
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