The ELF specification dictates that, when memsz exceeds filesz, the "extra" bytes should be taken to be zero. Previously, the simulator was not setting those bytes to zero, instead keeping them at their randomly initialized values. This commit sets those extra bytes to zero.
Note that everything not specified in the ELF, including the heap, remains randomly initialized.
sameer-s
commented
1 year ago
The ELF specification dictates that, when
memszexceedsfilesz, the "extra" bytes should be taken to be zero. Previously, the simulator was not setting those bytes to zero, instead keeping them at their randomly initialized values. This commit sets those extra bytes to zero.Note that everything not specified in the ELF, including the heap, remains randomly initialized.
See: System V Application Binary Interface, Section 5, Pgs. 5-3 to 5-4. https://www.sco.com/developers/devspecs/gabi41.pdf
Test with: test.tar.gz