b transfer_to_handler
#define STD_EXCEPTION(n, label, hdlr) \
+.align 4; \
label: \
EXCEPTION_PROLOG(SRR0, SRR1); \
addi r3,r1,STACK_FRAME_OVERHEAD; \
EXC_XFER_TEMPLATE(n, label, hdlr, MSR_KERNEL, NOCOPY) \
#define CRIT_EXCEPTION(n, label, hdlr) \
+.align 4; \
label: \
EXCEPTION_PROLOG(CSRR0, CSRR1); \
addi r3,r1,STACK_FRAME_OVERHEAD; \
MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE), NOCOPY) \
#define MCK_EXCEPTION(n, label, hdlr) \
+.align 4; \
label: \
EXCEPTION_PROLOG(MCSRR0, MCSRR1); \
addi r3,r1,STACK_FRAME_OVERHEAD; \