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https://fuchsia.googlesource.com/third_party/pigweed.googlesource.com/pigweed/pigweed
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1ee925c8ed
Initial work to get clang building ARM firmware. Current state: - Does not work on Windows; no clang toolchain yet. - Almost all tests pass. - FreeListHeap tests that don't zero-initilize the buffer fail in qemu and crash on STM32F429I-DISC1. (pwbug/315) Change-Id: I39559511f19571c26930a868406d6ee1b514c412 Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/13144 Commit-Queue: Armando Montanez <amontanez@google.com> Reviewed-by: Keir Mierle <keir@google.com> Reviewed-by: Ewout van Bekkum <ewout@google.com> Reviewed-by: Alexei Frolov <frolv@google.com> Pigweed-Auto-Submit: Armando Montanez <amontanez@google.com>
65 lines
1.6 KiB
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65 lines
1.6 KiB
ReStructuredText
.. _target-lm3s6965evb-qemu:
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----------------
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lm3s6965evb-qemu
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----------------
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This target is specifically for emulation of the Texas Instruments Stellaris
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LM3S lm3s6965evb using QEMU. This may be useful for testing ARMv7-M code without
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physical hardware.
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This target configuration has **not** been tested on the physical Stellaris
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development board.
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Building
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========
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To build for this Pigweed target, simply build the top-level "qemu_gcc" Ninja
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target.
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.. code:: sh
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$ ninja -C out qemu_gcc
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Testing
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=======
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This target does not yet support automatic test running (though it would be
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relatively easy to do so). To run a QEMU binary, see the instructions below.
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Executing Binaries
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==================
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When running a QEMU binary, you may chose to run it interactively with GDB, or
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allow the binary to run in a hands-off manner.
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Running Without GDB
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-------------------
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When running without GDB, the firmware will execute normally without requiring
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further interaction.
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.. code:: sh
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$ qemu-system-arm -cpu cortex-m3 -machine lm3s6965evb \
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-nographic -no-reboot \
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-kernel path/to/firmware.elf
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Run With GDB
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------------------
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When running with GDB, execution of the binary will begin in a halted state. To
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begin running the code, you must connect using GDB, set any breakpoints you
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wish, and then continue execution.
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.. code:: sh
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# Start the VM and GDB server.
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$ qemu-system-arm -cpu cortex-m3 -machine lm3s6965evb \
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-gdb tcp::3333 -S
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-nographic -no-reboot \
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-kernel path/to/firmware.elf
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In another window
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.. code:: sh
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$ arm-none-eabi-gdb path/to/firmare.elf
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(gdb) target remote :3333
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(gdb) break SomeFunction()
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(gdb) continue
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