[Tarantool-patches] [PATCH luajit 2/4] Revert "Update cur_L on exceptional path"

[Maxim Kokryashkin]

This reverts commit ed412cd9f55fe87fd32a69c86e1732690fc5c1b0.

As was mentioned in tarantool/tarantool#6189, throwing an error
not on the currently executed coroutine is a violation of the
Lua/C API. This patch is a part of the patchset that supports
this violation and is reverted because of it.

Part of tarantool/tarantool#6323
---
 src/vm_x64.dasc | 1 -
 src/vm_x86.dasc | 2 --
 2 files changed, 3 deletions(-)

diff --git a/src/vm_x64.dasc b/src/vm_x64.dasc
index 116716ac..399dfcbf 100644
--- a/src/vm_x64.dasc
+++ b/src/vm_x64.dasc
@@ -535,7 +535,6 @@ static void build_subroutines(BuildCtx *ctx)
   |->vm_unwind_c_eh:			// Landing pad for external unwinder.
   |  mov L:RB, SAVE_L
   |  mov GL:RB, L:RB->glref
-  |  mov [GL:RB->cur_L], L:RB
   |  mov dword GL:RB->vmstate, ~LJ_VMST_CFUNC
   |  mov DISPATCH, GL:RB   // Setup pointer to dispatch table.
   |  add DISPATCH, GG_G2DISP
diff --git a/src/vm_x86.dasc b/src/vm_x86.dasc
index e3fbf751..9fa9a3f7 100644
--- a/src/vm_x86.dasc
+++ b/src/vm_x86.dasc
@@ -683,7 +683,6 @@ static void build_subroutines(BuildCtx *ctx)
   |->vm_unwind_c_eh:			// Landing pad for external unwinder.
   |  mov L:RB, SAVE_L
   |  mov GL:RB, L:RB->glref
-  |  mov dword GL:RB->cur_L, L:RB
   |  mov dword GL:RB->vmstate, ~LJ_VMST_CFUNC
   |  mov DISPATCH, GL:RB   // Setup pointer to dispatch table.
   |  add DISPATCH, GG_G2DISP
@@ -719,7 +718,6 @@ static void build_subroutines(BuildCtx *ctx)
   |  add DISPATCH, GG_G2DISP
   |  mov PC, [BASE-4]			// Fetch PC of previous frame.
   |  mov dword [BASE-4], LJ_TFALSE	// Prepend false to error message.
-  |  mov [DISPATCH+DISPATCH_GL(cur_L)], L:RB
   |  // INTERP until jump to BC_RET* or return to C.
   |  set_vmstate INTERP
   |  jmp ->vm_returnc			// Increments RD/MULTRES and returns.
-- 
2.42.0