This repository was archived by the owner on Jan 24, 2022. It is now read-only.
make the "linker-script" Cargo feature opt-out #4
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
bors bot
added a commit
that referenced
this pull request
Oct 23, 2018
131: Allow GDB to unwind HardFault callstacks r=therealprof a=adamgreen When I currently request GDB to dump a hard fault stack, I see something like this: ``` (gdb) bt #0 UserHardFault_ (ef=0x10001fb8) at /depots/cortex-m-rt/src/lib.rs:537 #1 0x08003fe6 in HardFault () Backtrace stopped: previous frame identical to this frame (corrupt stack?) ``` GDB can't unwind past HardFault since the current implementation of this function overwrites the Link Register (LR) value. This change pushes LR and R0 (to maintain 8-byte stack alignment) to the stack before transferring execution to UserHardFault(). After this change, I see a callstack like this from GDB: ``` (gdb) bt #0 UserHardFault_ (ef=0x10001fb0) at /depots/cortex-m-rt/src/lib.rs:537 #1 0x08003fe8 in HardFault () #2 <signal handler called> #3 0x08002820 in core::ptr::read_volatile (src=0x48001800) at libcore/ptr.rs:472 #4 0x080001a2 in main () at src/07-registers/src/main.rs:14 ``` Notes: * This code uses 8 more stack bytes. * Increases the size of the HardFault handler by 2 narrow instructions or 4 bytes. This could be decreased to 2 bytes by removing the pop since UserHardFault() doesn't currently return but it just looks too odd for me to do as an initial attempt. Co-authored-by: Adam Green <adamgreen@users.noreply.github.com>
rukai
pushed a commit
to rukai/cortex-m-rt
that referenced
this pull request
May 1, 2021
fix the heap size calculation
# for free
to subscribe to this conversation on GitHub.
Already have an account?
#.
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
No description provided.