Major rewrite of error handling to allow external/internal unwinding.

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Make external unwinding the default on x64.
It's mandatory on WIN64 due to the abundance of callee-saved regs.
Allow piecewise internal frame unwinding and optional cleanup.
Store ERRMEM, ERRERR and ERRCPP early and copy down later.
Use FRAME_CP for lj_vm_resume.
Add lj_vm_unwind_*_eh variants as landing pads for external unwinder.
Use fastcall for lj_vm_unwind_*.
Can drop r12/r13 saves in POSIX/x64 interpreter now.

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This commit is contained in:

Mike Pall

2010-01-02 17:42:11 +01:00

parent 8fc9430d06

commit 93ee10642e

6 changed files with 1149 additions and 1009 deletions

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