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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.
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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src/lj_err.h
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@@ -19,6 +19,7 @@ typedef enum {
LJ_FUNC GCstr *lj_err_str(lua_State *L, ErrMsg em);
LJ_FUNC_NORET void lj_err_throw(lua_State *L, int errcode);
LJ_FUNC_NORET void lj_err_mem(lua_State *L);
LJ_FUNC_NORET void lj_err_run(lua_State *L);
LJ_FUNC_NORET void lj_err_msg(lua_State *L, ErrMsg em);
LJ_FUNC_NORET void lj_err_lex(lua_State *L, const char *src, const char *tok,