892a7696ec
Allow unwinding to propagate across a context swap.
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The main purpose of this is having nice backtraces in gdb, although
it also slightly simplifies poisoning state of the API consumers
after a panic.
2016-08-13 13:38:04 +02:00
40fbfdde0c
Kill impl StackPointer.
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That was a silly idea for a silly abstraction, and it brought no
improvement, only confusion. So, revert it.
2016-08-13 13:38:04 +02:00
75ca6f66e1
Move x86 trampoline to naked function
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Close #19
2016-07-16 16:39:19 -04:00
1ea4b01eda
Use mostly the same registers for consistency
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The exception to this is %eax is used not %edi on x86 because its
caller-save
2016-07-16 16:39:14 -04:00
cbe136b762
Completely rework fringe::Context and fringe::arch.
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The new design concerns itself with one thing and exactly one thing:
passing values back and forth with an extern "C" function.
This allows to simplify fringe::arch into a single primitive, swap.
Close #21
2016-07-16 15:04:15 -04:00
whitequark
John Ericson