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Fix SEC_STAT.IRM bit handling in ARC SEM interrupt entry/exit #1182

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Fix SEC_STAT.IRM bit handling in ARC SEM interrupt entry/exit #1182

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14 changes: 14 additions & 0 deletions portable/ThirdParty/GCC/ARC_EM_HS/arc_support.s
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Original file line number Diff line number Diff line change
Expand Up @@ -148,6 +148,9 @@ start_r:
exc_entry_cpu:

EXCEPTION_PROLOGUE
lr r3, [0x09] /* store SEC_STAT.IRM */
and r3, r3, 0x8
PUSH r3

mov blink, sp
mov r3, sp /* as exception handler's para(p_excinfo) */
Expand Down Expand Up @@ -185,6 +188,8 @@ ret_exc:
ret_exc_1: /* return from non-task context, interrupts or exceptions are nested */

EXCEPTION_EPILOGUE
POP r3 /* restore SEC_STAT.IRM */
sflag r3
rtie

/* there is a dispatch request */
Expand Down Expand Up @@ -215,6 +220,8 @@ ret_exc_r:

RESTORE_CALLEE_REGS /* recover registers */
EXCEPTION_EPILOGUE
POP r3 /* restore SEC_STAT.IRM */
sflag r3
rtie

/****** entry for normal interrupt exception handling ******/
Expand All @@ -235,6 +242,9 @@ exc_entry_int:
#endif
#endif
INTERRUPT_PROLOGUE
lr r3, [0x09] /* store SEC_STAT.IRM */
and r3, r3, 0x8
PUSH r3

mov blink, sp

Expand Down Expand Up @@ -294,6 +304,8 @@ ret_int:
brne r0, 0, ret_int_2
ret_int_1: /* return from non-task context */
INTERRUPT_EPILOGUE
POP r3 /* restore SEC_STAT.IRM */
sflag r3
rtie
/* there is a dispatch request */
ret_int_2:
Expand All @@ -319,6 +331,8 @@ ret_int_r:
RESTORE_CALLEE_REGS /* recover registers */
POPAX AUX_IRQ_ACT
INTERRUPT_EPILOGUE
POP r3 /* restore SEC_STAT.IRM */
sflag r3
rtie

#if ARC_FEATURE_FIRQ == 1
Expand Down