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Diffstat (limited to 'py/nlrthumb.S')
| -rw-r--r-- | py/nlrthumb.S | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/py/nlrthumb.S b/py/nlrthumb.S index 8c6eb9552..6a0c7ee1e 100644 --- a/py/nlrthumb.S +++ b/py/nlrthumb.S @@ -60,6 +60,8 @@ nlr_pop: nlr_jump: ldr r3, .L2 @ load addr of nlr_top ldr r2, [r3] @ load nlr_top + cmp r2, #0 @ test if nlr_top is NULL + beq nlr_jump_fail @ if nlr_top is NULL, transfer control to nlr_jump_fail str r0, [r2, #4] @ store return value ldr r0, [r2] @ load prev nlr_buf str r0, [r3] @ store prev nol_buf into nlr_top (to unlink list) |