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freertos: Fix save_context. Add RSYNC after WSR

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RSYNC waits for all previously fetched WSR.* instructions to be performed before inter-
preting the register fields of the next instruction.
This commit is contained in:
KonstantinKondrashov
2019-12-13 18:27:27 +08:00
committed by bot
parent c0d12988d3
commit 1687c53700
1 changed files with 1 additions and 0 deletions
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components/freertos/xtensa_context.S
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@@ -174,6 +174,7 @@ _xt_context_save:
movi a3, PS_INTLEVEL(1) /* For some curious reason the level 1 interrupts */ movi a3, PS_INTLEVEL(1) /* For some curious reason the level 1 interrupts */
or a2, a2, a3 /* dont set the intlevel correctly on PS, we need to */ or a2, a2, a3 /* dont set the intlevel correctly on PS, we need to */
wsr a2, PS /* do this manually */ wsr a2, PS /* do this manually */
rsync
_not_l1: _not_l1:
rsr a2, PS /* finally umask the window exceptions */ rsr a2, PS /* finally umask the window exceptions */
movi a3, ~(PS_EXCM_MASK) movi a3, ~(PS_EXCM_MASK)