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circuitpython/qemu-arm
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Paul Sokolovsky d3b1f0b627 py/runtime: mp_stack_ctrl_init() should be called immediately on startup. 
Calling it from mp_init() is too late for some ports (like Unix), and leads
to incomplete stack frame being captured, with following GC issues. So, now
each port should call mp_stack_ctrl_init() on its own, ASAP after startup,
and taking special precautions so it really was called before stack variables
get allocated (because if such variable with a pointer is missed, it may lead
to over-collecting (typical symptom is segfaulting)).
 		2016-01-29 02:13:42 +02:00
..
Makefile Makefiles: Remove duplicate object files when linking. 2015-10-24 15:46:53 +03:00
README.md qemu: fix typo in readme 2014-07-02 18:30:46 +01:00
main.c py/runtime: mp_stack_ctrl_init() should be called immediately on startup. 2016-01-29 02:13:42 +02:00
mpconfigport.h py: Remove dependency on printf/fwrite in mp_plat_print. 2015-10-15 00:05:55 +01:00
mphalport.h all: Add py/mphal.h and use it in all ports. 2015-10-31 19:14:30 +03:00
qstrdefsport.h qemu-arm: more generic port name. 2014-04-21 21:04:04 +01:00
test_main.c py/runtime: mp_stack_ctrl_init() should be called immediately on startup. 2016-01-29 02:13:42 +02:00

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.