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circuitpython/qemu-arm
Delio Brignoli e2ac8bb3f1 py: Add MICROPY_USE_INTERNAL_PRINTF option, defaults to enabled. 6 years ago
..
Makefile qemu-arm: Enable gcc LTO option for nlrthumb.c 6 years ago
README.md qemu: fix typo in readme 9 years ago
main.c py/runtime: mp_stack_ctrl_init() should be called immediately on startup. 7 years ago
mpconfigport.h py: Add MICROPY_USE_INTERNAL_PRINTF option, defaults to enabled. 6 years ago
mphalport.h all: Add py/mphal.h and use it in all ports. 7 years ago
qstrdefsport.h qemu-arm: more generic port name. 9 years ago
test_main.c py: Add MP_STATE_THREAD to hold state specific to a given thread. 7 years ago

README.md

This is experimental, community-supported port for Cortex-M emulation as provided by QEMU (http://qemu.org).

The purposes of this port are to enable:

  1. Continuous integration
    • run tests agains architecture-specific parts of code base
  2. Experimentation
    • simulation & prototyping of anything that has architecture-specific code
    • exploring instruction set in terms of optimising some part of MicroPython or a module
  3. Streamlined debugging
    • no need for JTAG or even an MCU chip itself
    • no need to use OpenOCD or anything else that might slow down the process in terms of plugging things together, pressing buttons, etc.

This port will only work with with GCC ARM Embedded toolchain and not with CodeSourcery toolchain. You will need to modify LDFLAGS if you want to use CodeSourcery's version of arm-none-eabi. The difference is that CodeSourcery needs -T generic-m-hosted.ld while ARM's version requires --specs=nano.specs --specs=rdimon.specs to be passed to the linker.