From compiling my app to checking the test.elf it creates here is the full ouput to display what I mean
The test.elf my app created (for hex editor only atm):Code:misty alpha Writing ELF Header... Writing Symbols... Writing Segment Header/s... Writing Program Header/s... Writing Program Instructions... Flushing file... ./test.elf Segmentation fault readelf -all test.elf ELF Header: Magic: 7f 45 4c 46 02 01 01 03 00 00 00 00 00 00 00 00 Class: ELF64 Data: 2's complement, little endian Version: 1 (current) OS/ABI: UNIX - GNU ABI Version: 0 Type: EXEC (Executable file) Machine: Advanced Micro Devices X86-64 Version: 0x1 Entry point address: 0x19c Start of program headers: 356 (bytes into file) Start of section headers: 100 (bytes into file) Flags: 0x0 Size of this header: 64 (bytes) Size of program headers: 56 (bytes) Number of program headers: 1 Size of section headers: 64 (bytes) Number of section headers: 4 Section header string table index: 2 readelf: Error: Section 2 has invalid sh_entsize of 0000000000000024 readelf: Error: (Using the expected size of 24 for the rest of this dump) Section Headers: [Nr] Name Type Address Offset Size EntSize Flags Link Info Align [ 0] ^�ELF^B^A^A^C NULL 0000000000000000 00000000 0000000000000000 0000000000000000 0 0 0 [ 1] ELF^B^A^A^C PROGBITS 000000000000019c 00000000 0000000000000006 0000000000000000 WXSLlp 0 0 0 [ 2] LF^B^A^A^C SYMTAB 0000000000000040 00000000 0000000000000024 0000000000000018 S 3 3 1 [ 3] F^B^A^A^C STRTAB 0000000000000040 00000000 0000000000000024 0000000000000001 S 0 0 1 Key to Flags: W (write), A (alloc), X (execute), M (merge), S (strings), I (info), L (link order), O (extra OS processing required), G (group), T (TLS), C (compressed), x (unknown), o (OS specific), E (exclude), l (large), p (processor specific) There are no section groups in this file. Program Headers: Type Offset VirtAddr PhysAddr FileSiz MemSiz Flags Align LOAD 0x0000000000000000 0x000000000000019c 0x000000000000019c 0x0000000000000006 0x0000000000000006 RWE 0x0 Section to Segment mapping: Segment Sections... 00 There is no dynamic section in this file. There are no relocations in this file. The decoding of unwind sections for machine type Advanced Micro Devices X86-64 is not currently supported. Symbol table 'LF^B^A^A^C' contains 1 entry: Num: Value Size Type Bind Vis Ndx Name 0: 0000000000000000 0x1003e0002 FUNC LOCAL INTERNAL bad section index[769] <corrupt> No version information found in this file. Exiting... ------------------ (program exited with code: 0) Press return to continue
test.elf - Google Drive
The code I used to create the section header ".strtab"
Code:elf64_t elf64 = {0}; segment_t e64 = { 0, "ELF Header", { sizeof(elf64_t), 1, 1, &elf64 } }; segment_t stxt = Symbols(); segment_t es64 = { stxt.pos + stxt.mem.size, "Segment Header/s", { sizeof(elsh64_t) * 4, 4, 4, calloc( 4, sizeof(elsh64_t) ) } }; elsh64_t *es64v = (elsh64_t*)es64.mem.buff, *es64e = es64v; ... /* Fill segment header .strtab */ es64e = &es64v[--s]; es64e->sh_name = s; es64e->sh_type = ELSH_SHT_STRTAB; es64e->sh_flags = 0x20; es64e->sh_addr = stxt.pos; es64e->sh_size = stxt.mem.size; es64e->sh_offset = 0; es64e->sh_link = 0; es64e->sh_info = 0; es64e->sh_adralign = 1; es64e->sh_entsize = 1;
