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30a3769057
Implement architecture-specific ELF header definitions and relocation handling for the MIPS architecture to enable loadable modules. Fixes #19178. Changes include: - Add `arch/mips/include/elf.h` with MIPS ELF relocation types and architecture-specific ELF data structures (`arch_elfdata_s`). - Implement `libs/libc/machine/mips/arch_elf.c` containing `up_checkarch`, `up_relocate`, and `up_relocateadd` functions handling `R_MIPS_NONE`, `R_MIPS_32`, `R_MIPS_26`, `R_MIPS_HI16`, and `R_MIPS_LO16` relocations. - Integrate MIPS machine-specific C library support in `libs/libc/machine/mips/Make.defs`. - Update `LDMODULEFLAGS` in `arch/mips/src/mips32/Toolchain.defs` to include the little-endian (`-EL`) flag. - Update `up_coherent_dcache` for proper cache synchronization on JZ4780. Signed-off-by: Lwazi Dube <lwazeh@gmail.com>
62 lines
1.9 KiB
C
62 lines
1.9 KiB
C
/****************************************************************************
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* arch/mips/include/elf.h
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. 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, 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
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* under the License.
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*
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****************************************************************************/
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#ifndef __ARCH_MIPS_INCLUDE_ELF_H
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#define __ARCH_MIPS_INCLUDE_ELF_H
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define R_MIPS_NONE 0
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#define R_MIPS_32 2
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#define R_MIPS_26 4
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#define R_MIPS_HI16 5
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#define R_MIPS_LO16 6
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#define MIPS_HI16_COUNT 10
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#define ARCH_ELFDATA 1
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/****************************************************************************
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* Private Data Types
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****************************************************************************/
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#ifndef __ASSEMBLY__
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struct arch_elfdata_s
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{
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struct hi_rel_s
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{
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Elf_Addr ahi;
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Elf32_Addr *p;
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}
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hi[MIPS_HI16_COUNT];
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int pos;
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Elf_Addr ahi; /* The newest ahi */
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};
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typedef struct arch_elfdata_s arch_elfdata_t;
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#endif /* __ASSEMBLY__ */
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#endif /* __ARCH_MIPS_INCLUDE_ELF_H */
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