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runtime: don't use thread local storage before it is set up on iOS 

CL 138675 added a call to runtime.save_g which uses thread local
storage to store g. On iOS however, that storage was not initialized
 yet. Move the call to below _cgo_init where it is set up.

Change-Id: I14538d3e7d56ff35a6fa02c47bca306d24c38010
Reviewed-on: https://go-review.googlesource.com/c/150157
Run-TryBot: Elias Naur <elias.naur@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
This commit is contained in:
Elias Naur 2018-11-17 10:00:14 +01:00
parent 1f388bc806
commit a889aaf8bf
1 changed files with 1 additions and 1 deletions
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2
src/runtime/asm_arm64.s
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@ -18,7 +18,6 @@ TEXT runtime·rt0_go(SB),NOSPLIT,$0
// create istack out of the given (operating system) stack.
// _cgo_init may update stackguard.
MOVD $runtime·g0(SB), g
BL runtime·save_g(SB)
MOVD RSP, R7
MOVD $(-64*1024)(R7), R0
MOVD R0, g_stackguard0(g)
@ -45,6 +44,7 @@ TEXT runtime·rt0_go(SB),NOSPLIT,$0
ADD $16, RSP
nocgo:
BL runtime·save_g(SB)
// update stackguard after _cgo_init
MOVD (g_stack+stack_lo)(g), R0
ADD $const__StackGuard, R0