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Merge branch 'bugfix/panic_switch_back_to_user_mode' into 'master'

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CPU switch from kernel to user mode

See merge request sdk/ESP8266_RTOS_SDK!306
This commit is contained in:
Wu Jian Gang
2018-07-19 19:44:50 +08:00
parent 45792bae33 627452e85c
commit dd2e391549
1 changed files with 7 additions and 1 deletions
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8
components/freertos/port/esp8266/xtensa_vectors.S
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@ -1521,9 +1521,15 @@ _xt_ext_panic:
* *
* Todo: Close NMI * Todo: Close NMI
*/ */
rsil a0, XCHAL_EXCM_LEVEL rsil a0, PS_INTLEVEL(5)
wsr a0, EXCSAVE_2 wsr a0, EXCSAVE_2
/*
* CPU must switch from kernel mode to user mode
*/
movi a0, PS_INTLEVEL(5) | PS_UM
wsr a0, PS
/* Allocate exception frame and save minimal context. */ /* Allocate exception frame and save minimal context. */
mov a0, sp mov a0, sp
movi sp, _chip_interrupt_tmp movi sp, _chip_interrupt_tmp