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-
- elf_getphdr(3E) Silicon Graphics elf_getphdr(3E)
-
- NAME
- elf_getphdr: elf32_getphdr, elf32_newphdr, elf64_getphdr, elf64_newphdr -
- retrieve class-dependent program header table
-
- SYNOPSIS
- cc [flag ...] file ... -lelf [library ...]
-
- #include <libelf.h>
-
- Elf32_Phdr *elf32_getphdr(Elf *elf);
- Elf32_Phdr *elf32_newphdr(Elf *elf, size_t count);
-
- Elf64_Phdr *elf64_getphdr(Elf *elf);
- Elf64_Phdr *elf64_newphdr(Elf *elf, size_t count);
-
- DESCRIPTION
- For a 32-bit class file, elf32_getphdr returns a pointer to the program
- execution header table, if one is available for the ELF descriptor elf.
-
- elf32_newphdr allocates a new table with count entries, regardless of
- whether one existed previously, and sets the ELF_F_DIRTY bit for the
- table [see elf_flag(3E)]. Specifying a zero count deletes an existing
- table. Note this behavior differs from that of elf32_newehdr [see
- elf32_getehdr(3E)], allowing a program to replace or delete the program
- header table, changing its size if necessary.
-
- If no program header table exists, the file is not a 32-bit class file,
- an error occurs, or elf is null, both functions return a null pointer.
- Additionally, elf32_newphdr returns a null pointer if count is zero.
-
- The table is an array of Elf32_Phdr structures, each of which includes
- the following members.
-
- Elf32_Word p_type;
- Elf32_Off p_offset;
- Elf32_Addr p_vaddr;
- Elf32_Addr p_paddr;
- Elf32_Word p_filesz;
- Elf32_Word p_memsz;
- Elf32_Word p_flags;
- Elf32_Word p_align;
-
- The ELF header's e_phnum member tells how many entries the program header
- table has [see elf_getehdr(3E)]. A program may inspect this value to
- determine the size of an existing table; elf32_newphdr automatically sets
- the member's value to count. If the program is building a new file, it
- is responsible for creating the file's ELF header before creating the
- program header table.
-
- The 64-bit class works identically, simply replacing all instances of 32
- in the description and table with 64.
-
- Page 1 Release 6.2
-
- elf_getphdr(3E) Silicon Graphics elf_getphdr(3E)
-
- SEE ALSO
- elf(3E), elf_begin(3E), elf_flag(3E), elf_getehdr(3E).
-
- Page 2 Release 6.2
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