41 lines
2.5 KiB
C
41 lines
2.5 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ This program is free software; you can redistribute it and/or modify │
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│ it under the terms of the GNU General Public License as published by │
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│ the Free Software Foundation; version 2 of the License. │
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│ │
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│ This program is distributed in the hope that it will be useful, but │
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│ WITHOUT ANY WARRANTY; without even the implied warranty of │
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│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
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│ General Public License for more details. │
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│ │
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│ You should have received a copy of the GNU General Public License │
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│ along with this program; if not, write to the Free Software │
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│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
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│ 02110-1301 USA │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/elf/elf.h"
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#include "libc/limits.h"
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void GetElfVirtualAddressRange(const Elf64_Ehdr *elf, size_t elfsize,
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intptr_t *out_start, intptr_t *out_end) {
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unsigned i;
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Elf64_Phdr *phdr;
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intptr_t start, end, pstart, pend;
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start = INTPTR_MAX;
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end = 0;
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for (i = 0; i < elf->e_phnum; ++i) {
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phdr = GetElfSegmentHeaderAddress(elf, elfsize, i);
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if (phdr->p_type != PT_LOAD) continue;
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pstart = phdr->p_vaddr;
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pend = phdr->p_vaddr + phdr->p_memsz;
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if (pstart < start) start = pstart;
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if (pend > end) end = pend;
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}
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if (out_start) *out_start = start;
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if (out_end) *out_end = end;
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}
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