58 lines
2.4 KiB
C
58 lines
2.4 KiB
C
/***************************************************************************
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* Copyright (C) 2016
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* by Dimok
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any
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* damages arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any
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* purpose, including commercial applications, and to alter it and
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* redistribute it freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you
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* must not claim that you wrote the original software. If you use
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* this software in a product, an acknowledgment in the product
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* documentation would be appreciated but is not required.
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*
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* 2. Altered source versions must be plainly marked as such, and
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* must not be misrepresented as being the original software.
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*
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* 3. This notice may not be removed or altered from any source
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* distribution.
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***************************************************************************/
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#ifndef _ELF_PATCHER_H
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#define _ELF_PATCHER_H
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#include "types.h"
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#define ARM_B(addr, func) (0xEA000000 | ((((u32) (func) - (u32) (addr) -8) >> 2) & 0x00FFFFFF)) // +-32MB
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#define ARM_BL(addr, func) (0xEB000000 | ((((u32) (func) - (u32) (addr) -8) >> 2) & 0x00FFFFFF)) // +-32MB
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#define THUMB_B(addr, func) ((0xE000 | ((((u32) (func) - (u32) (addr) -4) >> 1) & 0x7FF))) // +-2KB
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#define THUMB_BL(addr, func) ((0xF000F800 | ((((u32) (func) - (u32) (addr) -4) >> 1) & 0x0FFF)) | ((((u32) (func) - (u32) (addr) -4) << 4) & 0x7FFF000)) // +-4MB
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typedef struct {
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u32 address;
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void *data;
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u32 size;
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} patch_table_t;
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void section_write(u32 ios_elf_start, u32 address, const void *data, u32 size);
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void section_write_bss(u32 ios_elf_start, u32 address, u32 size);
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static inline void section_write_word(u32 ios_elf_start, u32 address, u32 word) {
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section_write(ios_elf_start, address, &word, sizeof(word));
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}
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static inline void patch_table_entries(u32 ios_elf_start, const patch_table_t *patch_table, u32 patch_count) {
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u32 i;
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for (i = 0; i < patch_count; i++) {
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section_write(ios_elf_start, patch_table[i].address, patch_table[i].data, patch_table[i].size);
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}
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}
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#endif
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