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3c658a4e75
circuitpython/qemu-arm
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Damien George 3c658a4e75 py: Fix bug where GC collected native/viper/asm function data. 
Because (for Thumb) a function pointer has the LSB set, pointers to
dynamic functions in RAM (eg native, viper or asm functions) were not
being traced by the GC.  This patch is a comprehensive fix for this.

Addresses issue #820.
2014-08-24 16:28:17 +01:00
..
main.c Put call to qstr_init and mp_init_emergency_exc_buf in mp_init. 2014-08-04 10:05:16 +01:00
Makefile qemu-arm: fully integrated test suite. 2014-05-08 01:41:32 +03:00
mpconfigport.h py: Fix bug where GC collected native/viper/asm function data. 2014-08-24 16:28:17 +01:00
qstrdefsport.h qemu-arm: more generic port name. 2014-04-21 21:04:04 +01:00
README.md qemu: fix typo in readme 2014-07-02 18:30:46 +01:00
test_main.c Put call to qstr_init and mp_init_emergency_exc_buf in mp_init. 2014-08-04 10:05:16 +01:00

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.