Damien George fd49fcb229 stm32/gccollect: Always use MP_STATE_THREAD(stack_top) to get stack top.
In a non-thread build, using &_ram_end as the top-of-stack is no longer
correct because the stack is not always at the very top end of RAM.  See
eg 04c7cdb668cc7ee391ef5fe000f825389197f7e2 and
378659209778a1bde24e9b15793087023b02bbd9.  The correct value to use is
&_estack, which is the value stored in MP_STATE_THREAD(stack_top), and
using the same code for both thread and non-thread builds makes the code
cleaner.
2019-07-11 17:32:01 +10:00
..
2019-07-02 17:09:59 +10:00