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ARC: entry.S: canonical'ize EXCEPTION_{PROLOGUE,EPILOGUE}
-EXCEPTION_EPILOGUE introduced -EXCEPTION_PROLOGUE now also includes reg file saving Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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2 changed files with 3 additions and 18 deletions
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@ -401,21 +401,6 @@
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/* ARC700 doesn't provide auto-stack switching */
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SWITCH_TO_KERNEL_STK
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/* save the regfile */
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SAVE_ALL_SYS
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.endm
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/*--------------------------------------------------------------
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* Save all registers used by Exceptions (TLB Miss, Prot-V, Mem err etc)
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* Requires SP to be already switched to kernel mode Stack
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* sp points to the next free element on the stack at exit of this macro.
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* Registers are pushed / popped in the order defined in struct ptregs
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* in asm/ptrace.h
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* Note that syscalls are implemented via TRAP which is also a exception
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* from CPU's point of view
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*-------------------------------------------------------------*/
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.macro SAVE_ALL_SYS
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lr r9, [ecr]
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st r9, [sp, 8] /* ECR */
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st r0, [sp, 4] /* orig_r0, needed only for sys calls */
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@ -446,7 +431,7 @@
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* for memory load operations. If used in that way interrupts are deffered
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* by hardware and that is not good.
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*-------------------------------------------------------------*/
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.macro RESTORE_ALL_SYS
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.macro EXCEPTION_EPILOGUE
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POPAX erbta
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POPAX lp_start
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POPAX lp_end
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@ -638,7 +638,7 @@ restore_regs :
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; if Returning from Exception
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bbit0 r10, STATUS_AE_BIT, not_exception
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RESTORE_ALL_SYS
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EXCEPTION_EPILOGUE
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rtie
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; Not Exception so maybe Interrupts (Level 1 or 2)
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@ -704,7 +704,7 @@ not_level1_interrupt:
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;this case is for syscalls or Exceptions (with fake rtie)
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RESTORE_ALL_SYS
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EXCEPTION_EPILOGUE
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debug_marker_syscall:
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rtie
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