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runtime: fix systemstack tracebacks on nacl/arm

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For #11956.

Change-Id: Ic9b57cafa197953cc7f435941e44d42b60b3ddf0
Reviewed-on: https://go-review.googlesource.com/13011
Reviewed-by: Dave Cheney <dave@cheney.net>
This commit is contained in:
Russ Cox 2015-07-30 22:52:45 -04:00
parent b63fb59de8
commit 108ec5f75a
1 changed files with 3 additions and 0 deletions
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3
src/runtime/asm_arm.s
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@ -215,6 +215,9 @@ switch:
// save our state in g->sched. Pretend to
// be systemstack_switch if the G stack is scanned.
MOVW $runtime·systemstack_switch(SB), R3
#ifdef GOOS_nacl
ADD $4, R3, R3 // get past nacl-insert bic instruction
#endif
ADD $4, R3, R3 // get past push {lr}
MOVW R3, (g_sched+gobuf_pc)(g)
MOVW R13, (g_sched+gobuf_sp)(g)