dyldcache.h

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// SPDX-FileCopyrightText: 2021 Florian Märkl <info@florianmaerkl.de>
// SPDX-FileCopyrightText: 2020 Francesco Tamagni <mrmacete@protonmail.ch>
// SPDX-License-Identifier: LGPL-3.0-only
 
#ifndef RZ_BIN_FORMAT_DYLDCACHE_H
#define RZ_BIN_FORMAT_DYLDCACHE_H
 
#include <rz_util.h>
#include <set.h>
 
#define RZ_BIN_MACH064 1
 
#include "mach0.h"
 
typedef struct rz_dyld_rebase_info_t {
    ut8 version;
    ut64 slide;
    ut8 *one_page_buf;
    ut32 page_size;
    ut64 start_of_data;
} RzDyldRebaseInfo;
 
typedef struct rz_dyld_rebase_infos_entry_t {
    ut64 start;
    ut64 end;
    RzDyldRebaseInfo *info;
} RzDyldRebaseInfosEntry;
 
typedef struct rz_dyld_rebase_infos_t {
    RzDyldRebaseInfosEntry *entries;
    size_t length;
} RzDyldRebaseInfos;
 
typedef struct rz_dyld_rebase_info_3_t {
    ut8 version;
    ut64 slide;
    ut8 *one_page_buf;
    ut32 page_size;
    ut64 start_of_data;
    ut16 *page_starts;
    ut32 page_starts_count;
    ut64 delta_mask;
    ut32 delta_shift;
    ut64 auth_value_add;
} RzDyldRebaseInfo3;
 
typedef struct rz_dyld_rebase_info_2_t {
    ut8 version;
    ut64 slide;
    ut8 *one_page_buf;
    ut32 page_size;
    ut64 start_of_data;
    ut16 *page_starts;
    ut32 page_starts_count;
    ut16 *page_extras;
    ut32 page_extras_count;
    ut64 delta_mask;
    ut64 value_mask;
    ut32 delta_shift;
    ut64 value_add;
} RzDyldRebaseInfo2;
 
typedef struct rz_dyld_rebase_info_1_t {
    ut8 version;
    ut64 slide;
    ut8 *one_page_buf;
    ut32 page_size;
    ut64 start_of_data;
    ut16 *toc;
    ut32 toc_count;
    ut8 *entries;
    ut32 entries_size;
} RzDyldRebaseInfo1;
 
typedef struct rz_dyld_loc_sym_t {
    ut64 local_symbols_offset;
    ut64 nlists_offset;
    ut64 nlists_count;
    ut64 strings_offset;
    ut64 strings_size;
} RzDyldLocSym;
 
typedef struct rz_bin_dyld_image_t {
    char *file;
    ut64 header_at;
    ut64 hdr_offset;
    ut64 symbols_off;
    ut64 va;
    ut32 nlist_start_index;
    ut32 nlist_count;
} RzDyldBinImage;
 
typedef struct rz_dyldcache_t {
    ut8 magic[8];
 
    cache_hdr_t *hdr;
    ut64 *hdr_offset;
    ut64 symbols_off_base;
    ut32 *maps_index;
    ut32 n_hdr;
    cache_map_t *maps;
    ut32 n_maps;
 
    RzList *bins;
    RzBuffer *buf;
    RzDyldRebaseInfos *rebase_infos;
    cache_accel_t *accel;
    RzDyldLocSym *locsym;
    objc_cache_opt_info *oi;
    bool objc_opt_info_loaded;
} RzDyldCache;
 
RZ_API bool rz_dyldcache_check_magic(const char *magic);
RZ_API RzDyldCache *rz_dyldcache_new_buf(RzBuffer *buf);
RZ_API void rz_dyldcache_free(RzDyldCache *cache);
RZ_API ut64 rz_dyldcache_va2pa(RzDyldCache *cache, uint64_t vaddr, ut32 *offset, ut32 *left);
RZ_API ut64 rz_dyldcache_get_slide(RzDyldCache *cache);
RZ_API objc_cache_opt_info *rz_dyldcache_get_objc_opt_info(RzBinFile *bf, RzDyldCache *cache);
RZ_API void rz_dyldcache_symbols_from_locsym(RzDyldCache *cache, RzDyldBinImage *bin, RzList *symbols, SetU *hash);
 
RZ_API RzBuffer *rz_dyldcache_new_rebasing_buf(RzDyldCache *cache);
RZ_API bool rz_dyldcache_needs_rebasing(RzDyldCache *cache);
RZ_API bool rz_dyldcache_range_needs_rebasing(RzDyldCache *cache, ut64 paddr, ut64 size);
 
#endif