michaelh/zephyr
1
0
Fork 0
Code Releases Activity

userspace: fix incorrect linker routing

Browse source 
The _thread_idx_map bitfield which has '1' set for free
thread indexes really needs to live in the
data section reserved for kernel object metadata, as this
is a part of memory that is allowed to shift addresses
between zephyr_prebuilt.elf and zephyr.elf.

However, if an application defines enough static threads
that there are no free indexes, the entire bitfield will
be zeroed and the bitfield will end up in the main BSS
section.

Force this data to always be in the .kobject_data.data
section regardless of its contents.

Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
This commit is contained in:
Andrew Boie 2020-01-08 17:37:11 -08:00 • committed by Andrew Boie
commit 9b34ecd0c8
1 changed files with 1 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

1
scripts/gen_kobject_list.py
View file

@ -234,6 +234,7 @@ def write_gperf_table(fp, eh, objs, static_begin, static_end):
# Generate the array of already mapped thread indexes
fp.write('\n')
fp.write('Z_GENERIC_SECTION(.kobject_data.data) ')
fp.write('u8_t _thread_idx_map[%d] = {' % (thread_max_bytes))
for i in range(0, thread_max_bytes):