1 .. SPDX-License-Identifier: GPL-2.0 2 3 ================================= 4 Linux-specific ELF idiosyncrasies 5 ================================= 6 7 Definitions 8 =========== 9 10 "First" program header is the one with the smallest offset in the file: 11 e_phoff. 12 13 "Last" program header is the one with the biggest offset in the file: 14 e_phoff + (e_phnum - 1) * sizeof(Elf_Phdr). 15 16 PT_INTERP 17 ========= 18 19 First PT_INTERP program header is used to locate the filename of ELF 20 interpreter. Other PT_INTERP headers are ignored (since Linux 2.4.11). 21 22 PT_GNU_STACK 23 ============ 24 25 Last PT_GNU_STACK program header defines userspace stack executability 26 (since Linux 2.6.6). Other PT_GNU_STACK headers are ignored. 27 28 PT_GNU_PROPERTY 29 =============== 30 31 ELF interpreter's last PT_GNU_PROPERTY program header is used (since 32 Linux 5.8). If interpreter doesn't have one, then the last PT_GNU_PROPERTY 33 program header of an executable is used. Other PT_GNU_PROPERTY headers 34 are ignored.
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