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todo: add tip on how to identify excessive stack usage 

Use dynamic allocations for working memory rather than stack.

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
__archive__
Øyvind Harboe 2009-11-22 18:50:57 +01:00
parent 5c4a73d0d8
commit 7daec5a0ce
1 changed files with 16 additions and 0 deletions
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@ -306,6 +306,22 @@ These ideas were first introduced here: @par
The following architectural tasks need to be accomplished and should be The following architectural tasks need to be accomplished and should be
fairly easy to complete: fairly easy to complete:
- use dynamic allocations for working memory. Scan & fix code
for excessive stack allocations. take linux/scripts/checkpatch.pl and
see what the worst offenders are. Example, on amd64:
$ objdump -d | checkpatch.pl | head -10
0x004311e3 image_open [openocd]: 13464
0x00431301 image_open [openocd]: 13464
0x004237a4 target_array2mem [openocd]: 4376
0x0042382b target_array2mem [openocd]: 4376
0x00423e74 target_mem2array [openocd]: 4360
0x00423ef9 target_mem2array [openocd]: 4360
0x00404aed handle_svf_command [openocd]: 2248
0x00404b7e handle_svf_command [openocd]: 2248
0x00413581 handle_flash_fill_command [openocd]: 2200
0x004135fa handle_flash_fill_command [openocd]: 2200
- clean-up code to match style guides - clean-up code to match style guides
- factor code to eliminate duplicated functionality - factor code to eliminate duplicated functionality
- rewrite code that uses casts to access 16-bit and larger types - rewrite code that uses casts to access 16-bit and larger types