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- .. SPDX-License-Identifier: GPL-2.0
- =================================
- Linux-specific ELF idiosyncrasies
- =================================
- Definitions
- ===========
- "First" program header is the one with the smallest offset in the file:
- e_phoff.
- "Last" program header is the one with the biggest offset in the file:
- e_phoff + (e_phnum - 1) * sizeof(Elf_Phdr).
- PT_INTERP
- =========
- First PT_INTERP program header is used to locate the filename of ELF
- interpreter. Other PT_INTERP headers are ignored (since Linux 2.4.11).
- PT_GNU_STACK
- ============
- Last PT_GNU_STACK program header defines userspace stack executability
- (since Linux 2.6.6). Other PT_GNU_STACK headers are ignored.
- PT_GNU_PROPERTY
- ===============
- ELF interpreter's last PT_GNU_PROPERTY program header is used (since
- Linux 5.8). If interpreter doesn't have one, then the last PT_GNU_PROPERTY
- program header of an executable is used. Other PT_GNU_PROPERTY headers
- are ignored.
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