@@ -661,30 +661,27 @@ BEGIN_FTR_SECTION \
beql ppc64_runlatch_on_trampoline; \
END_FTR_SECTION_IFSET(CPU_FTR_CTRL)
-#define EXCEPTION_COMMON(area, trap, label, hdlr, ret, additions) \
+#define EXCEPTION_COMMON(area, trap, label, additions) \
EXCEPTION_PROLOG_COMMON(trap, area); \
/* Volatile regs are potentially clobbered here */ \
- additions; \
- addi r3,r1,STACK_FRAME_OVERHEAD; \
- bl hdlr; \
- b ret
+ additions
/*
* Exception where stack is already set in r1, r1 is saved in r10, and it
* continues rather than returns.
*/
-#define EXCEPTION_COMMON_NORET_STACK(area, trap, label, hdlr, additions) \
+#define EXCEPTION_COMMON_NORET_STACK(area, trap, label, additions) \
EXCEPTION_PROLOG_COMMON_1(); \
EXCEPTION_PROLOG_COMMON_2(area); \
EXCEPTION_PROLOG_COMMON_3(trap); \
/* Volatile regs are potentially clobbered here */ \
- additions; \
- addi r3,r1,STACK_FRAME_OVERHEAD; \
- bl hdlr
+ additions
#define STD_EXCEPTION_COMMON(trap, label, hdlr) \
- EXCEPTION_COMMON(PACA_EXGEN, trap, label, hdlr, \
- ret_from_except, ADD_NVGPRS;ADD_RECONCILE)
+ EXCEPTION_COMMON(PACA_EXGEN, trap, label, ADD_NVGPRS;ADD_RECONCILE); \
+ addi r3,r1,STACK_FRAME_OVERHEAD; \
+ bl hdlr; \
+ b ret_from_except
/*
* Like STD_EXCEPTION_COMMON, but for exceptions that can occur
@@ -692,8 +689,11 @@ END_FTR_SECTION_IFSET(CPU_FTR_CTRL)
* (finish nap and runlatch)
*/
#define STD_EXCEPTION_COMMON_ASYNC(trap, label, hdlr) \
- EXCEPTION_COMMON(PACA_EXGEN, trap, label, hdlr, \
- ret_from_except_lite, FINISH_NAP;ADD_RECONCILE;RUNLATCH_ON)
+ EXCEPTION_COMMON(PACA_EXGEN, trap, label, \
+ FINISH_NAP;ADD_RECONCILE;RUNLATCH_ON); \
+ addi r3,r1,STACK_FRAME_OVERHEAD; \
+ bl hdlr; \
+ b ret_from_except_lite
/*
* When the idle code in power4_idle puts the CPU into NAP mode,
@@ -180,9 +180,10 @@ EXC_COMMON_BEGIN(system_reset_common)
mr r10,r1
ld r1,PACA_NMI_EMERG_SP(r13)
subi r1,r1,INT_FRAME_SIZE
- EXCEPTION_COMMON_NORET_STACK(PACA_EXNMI, 0x100,
- system_reset, system_reset_exception,
- ADD_NVGPRS;ADD_RECONCILE_NMI)
+ EXCEPTION_COMMON_NORET_STACK(PACA_EXNMI, 0x100, system_reset,
+ ADD_NVGPRS;ADD_RECONCILE_NMI)
+ addi r3,r1,STACK_FRAME_OVERHEAD
+ bl system_reset_exception
/* This (and MCE) can be simplified with mtmsrd L=1 */
/* Clear MSR_RI before setting SRR0 and SRR1. */
@@ -1090,8 +1091,11 @@ hmi_exception_after_realmode:
b tramp_real_hmi_exception
EXC_COMMON_BEGIN(hmi_exception_common)
-EXCEPTION_COMMON(PACA_EXGEN, 0xe60, hmi_exception_common, handle_hmi_exception,
- ret_from_except, FINISH_NAP;ADD_NVGPRS;ADD_RECONCILE;RUNLATCH_ON)
+EXCEPTION_COMMON(PACA_EXGEN, 0xe60, hmi_exception_common,
+ FINISH_NAP;ADD_NVGPRS;ADD_RECONCILE;RUNLATCH_ON)
+ addi r3,r1,STACK_FRAME_OVERHEAD
+ bl handle_hmi_exception
+ b ret_from_except
EXC_REAL_OOL_MASKABLE_HV(h_doorbell, 0xe80, 0x20, IRQS_DISABLED)
EXC_VIRT_OOL_MASKABLE_HV(h_doorbell, 0x4e80, 0x20, 0xe80, IRQS_DISABLED)
@@ -1386,9 +1390,10 @@ EXC_COMMON_BEGIN(soft_nmi_common)
mr r10,r1
ld r1,PACAEMERGSP(r13)
subi r1,r1,INT_FRAME_SIZE
- EXCEPTION_COMMON_NORET_STACK(PACA_EXGEN, 0x900,
- system_reset, soft_nmi_interrupt,
- ADD_NVGPRS;ADD_RECONCILE)
+ EXCEPTION_COMMON_NORET_STACK(PACA_EXGEN, 0x900, system_reset,
+ ADD_NVGPRS;ADD_RECONCILE)
+ addi r3,r1,STACK_FRAME_OVERHEAD
+ bl soft_nmi_interrupt
b ret_from_except
#else /* CONFIG_PPC_WATCHDOG */
The aim is to reduce the amount of indirection it takes to get through the exception handler macros, particularly where it provides little code sharing. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> --- arch/powerpc/include/asm/exception-64s.h | 26 ++++++++++++------------ arch/powerpc/kernel/exceptions-64s.S | 21 +++++++++++-------- 2 files changed, 26 insertions(+), 21 deletions(-)