[Concept,00/10] backtrace: Add runtime support for looking at the backtrace

Message ID	20251129080014.758001-1-sjg@u-boot.org
Headers	From: Simon Glass <sjg@u-boot.org> To: U-Boot Concept <concept@u-boot.org> Date: Sat, 29 Nov 2025 00:59:45 -0700 Message-ID: <20251129080014.758001-1-sjg@u-boot.org> MIME-Version: 1.0 Message-ID-Hash: QIJC7UWRXJMFLCLLJCVJYF3PY6WMNXKR CC: Heinrich Schuchardt <xypron.glpk@gmx.de>, Simon Glass <simon.glass@canonical.com> Precedence: list Subject: [Concept] [PATCH 00/10] backtrace: Add runtime support for looking at the backtrace Archived-At: <https://lists.u-boot.org/archives/list/concept@u-boot.org/message/QIJC7UWRXJMFLCLLJCVJYF3PY6WMNXKR/> Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit
Series	backtrace: Add runtime support for looking at the backtrace \| [Concept,00/10] backtrace: Add runtime support for looking at the backtrace [Concept,01/10] claude: Tell it about my crosfw script being silent [Concept,02/10] backtrace: Add a library to access the backtrace [Concept,03/10] CI: Disable backtrace for the trace test [Concept,04/10] backtrace: sandbox: Add support for obtaining symbols [Concept,05/10] backtrace: sandbox: Link with libbacktraces [Concept,06/10] backtrace: sandbox: Add -rdynamic to export symbols [Concept,07/10] backtrace: Add a test [Concept,08/10] backtrace: Add a command [Concept,09/10] backtrace: doc: Mention the feature [Concept,10/10] backtrace: Strip the source tree prefix from filenames

Message ID

20251129080014.758001-1-sjg@u-boot.org

Headers

From: Simon Glass <sjg@u-boot.org>
To: U-Boot Concept <concept@u-boot.org>
Date: Sat, 29 Nov 2025 00:59:45 -0700
Message-ID: <20251129080014.758001-1-sjg@u-boot.org>
MIME-Version: 1.0
Message-ID-Hash: QIJC7UWRXJMFLCLLJCVJYF3PY6WMNXKR
CC: Heinrich Schuchardt <xypron.glpk@gmx.de>,
 Simon Glass <simon.glass@canonical.com>
Precedence: list
Subject: [Concept] [PATCH 00/10] backtrace: Add runtime support for looking at
 the
 backtrace
Archived-At: 
 <https://lists.u-boot.org/archives/list/concept@u-boot.org/message/QIJC7UWRXJMFLCLLJCVJYF3PY6WMNXKR/>
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit

Series

backtrace: Add runtime support for looking at the backtrace |

Message

Simon Glass Nov. 29, 2025, 7:59 a.m. UTC

  From: Simon Glass <simon.glass@canonical.com>

In some cases the backtrace contains useful information, such as whether
a particular function was called earlier in the stack.

This series provides a very simple backtrace library, along with some
sandbox-specific functions to allow it to work. It is designed such that
another arch could implement it.

A new 'backtrace' command provides access to the backtrace.


Simon Glass (10):
  claude: Tell it about my crosfw script being silent
  backtrace: Add a library to access the backtrace
  CI: Disable backtrace for the trace test
  backtrace: sandbox: Add support for obtaining symbols
  backtrace: sandbox: Link with libbacktraces
  backtrace: sandbox: Add -rdynamic to export symbols
  backtrace: Add a test
  backtrace: Add a command
  backtrace: doc: Mention the feature
  backtrace: Strip the source tree prefix from filenames

 .gitlab-ci.yml               |   2 +-
 CLAUDE.md                    |   1 +
 arch/sandbox/config.mk       |  13 +++-
 arch/sandbox/cpu/Makefile    |   7 +-
 arch/sandbox/cpu/backtrace.c | 122 +++++++++++++++++++++++++++++++++++
 arch/sandbox/lib/Makefile    |   1 +
 arch/sandbox/lib/backtrace.c |  71 ++++++++++++++++++++
 cmd/Kconfig                  |   8 +++
 cmd/Makefile                 |   1 +
 cmd/backtrace.c              |  30 +++++++++
 configs/sandbox_defconfig    |   1 +
 doc/arch/sandbox/sandbox.rst |  17 +++++
 doc/usage/cmd/backtrace.rst  |  51 +++++++++++++++
 doc/usage/index.rst          |   1 +
 examples/rust/build.rs       |   3 +
 examples/ulib/config.mk      |   2 +-
 include/backtrace.h          |  72 +++++++++++++++++++++
 include/os.h                 |  34 ++++++++++
 lib/Kconfig                  |   8 +++
 lib/Makefile                 |   2 +
 lib/backtrace.c              |  55 ++++++++++++++++
 test/cmd/Makefile            |   1 +
 test/cmd/backtrace.c         |  27 ++++++++
 test/lib/Makefile            |   1 +
 test/lib/backtrace.c         |  47 ++++++++++++++
 25 files changed, 574 insertions(+), 4 deletions(-)
 create mode 100644 arch/sandbox/cpu/backtrace.c
 create mode 100644 arch/sandbox/lib/backtrace.c
 create mode 100644 cmd/backtrace.c
 create mode 100644 doc/usage/cmd/backtrace.rst
 create mode 100644 include/backtrace.h
 create mode 100644 lib/backtrace.c
 create mode 100644 test/cmd/backtrace.c
 create mode 100644 test/lib/backtrace.c