elf_map.c

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// SPDX-FileCopyrightText: 2021 08A <08A@riseup.net>
// SPDX-FileCopyrightText: 2021 RizinOrg <info@rizin.re>
// SPDX-License-Identifier: LGPL-3.0-only
 
#include "elf.h"
 
static ut64 get_targets_map_base_from_segments(ELFOBJ *bin) {
    ut64 result = 0;
 
    RzBinElfSegment *segment;
    rz_bin_elf_foreach_segments(bin, segment) {
        if (segment->data.p_type != PT_LOAD) {
            continue;
        }
 
        result = RZ_MAX(result, segment->data.p_paddr + segment->data.p_memsz);
    }
 
    return result;
}
 
static ut64 get_targets_map_base_from_sections(ELFOBJ *bin) {
    ut64 result = 0;
 
    RzBinElfSection *section;
    rz_bin_elf_foreach_sections(bin, section) {
        if (section->rva == UT64_MAX) {
            continue;
        }
        result = RZ_MAX(result, section->rva + section->size);
    }
 
    return result;
}
 
static ut64 get_targets_map_base(ELFOBJ *bin) {
    if (Elf_(rz_bin_elf_has_segments)(bin)) {
        return get_targets_map_base_from_segments(bin);
    }
 
    return get_targets_map_base_from_sections(bin);
}
 
ut64 Elf_(rz_bin_elf_get_targets_map_base)(ELFOBJ *bin) {
    ut64 result = get_targets_map_base(bin);
    result += 0x8; // small additional shift to not overlap with symbols like _end
    return result + rz_num_align_delta(result, sizeof(Elf_(Addr)));
}