Data Fields
bfelf64_word	perm

bfelf64_off	mem_offset

bfelf64_off	file_offset

bfelf64_xword	memsz

bfelf64_xword	filesz

bfelf64_addr	virt_addr

Detailed Description

ELF Load Segment

The load instructions that each segment provides is missing some helpful info. This structure provides the info that is needed, in a cleaned up format.

Note that there are two different char * buffers that you need to know about when loading a segment. There is the char * for the ELF file, and the char * for the memory that the ELF file is being loaded into. The ELF file does not equal memory. The best example is the BSS section, which is empty in the ELF file. Also, the RE vs RW sections are usually aligned. To use this information use the following steps:

get the total size of memory
allocate RW memory for the total size
get the number of load instructions
loop through each load instruction and copy the file char * to the mem char * using the file/mem offset/size.
map memory using the virt_addr and mem_size

Definition at line 207 of file bfelf_loader.h.

Field Documentation

◆ perm

bfelf_load_instr::perm

defines the permissions (read/write/execute) for this segment

Definition at line 209 of file bfelf_loader.h.

◆ mem_offset

bfelf_load_instr::mem_offset

defines the segment offset in memory

Definition at line 210 of file bfelf_loader.h.

◆ file_offset

bfelf_load_instr::file_offset

defines the segment offset in the ELF file

Definition at line 211 of file bfelf_loader.h.

◆ memsz

bfelf_load_instr::memsz

defines the segment size in memory

Definition at line 212 of file bfelf_loader.h.

◆ filesz

bfelf_load_instr::filesz

defines the segment size in the ELF file

Definition at line 213 of file bfelf_loader.h.

◆ virt_addr

bfelf_load_instr::virt_addr

defines the assumed virtual address of the segment if PIC == false

Definition at line 214 of file bfelf_loader.h.

The documentation for this struct was generated from the following file:

/home/user/hypervisor/bfelf_loader/include/bfelf_loader.h

Data Fields