« Previous | Next » 

Revision d60fa42e

IDd60fa42e8bae39440f997ebfe8fe328269a57d16

Added by Fabien Chouteau about 11 years ago

Save memory allocation in the elf loader

The current elf loader uses too much memory. For example, I have a
executable with a bss section of 400 MB and I set the ram size to 512
MB. Qemu uses about 780MB of RAM (which is fine), but there's a peak at
1.6 GB during initialization (this is not fine).

This patch fixes two things:
1) do not allocate each elf program twice.
2) do not allocate memory for areas that are only zeros.

For this we need a new field in Rom: "datasize" which is the size of the
allocated data. If datasize is less than romsize, it means that the area
from datasize to romsize is filled with zeros.

Signed-off-by: Fabien Chouteau <>
Signed-off-by: Alexander Graf <>

Files

  • added
  • modified
  • copied
  • renamed
  • deleted

View differences