1 #ifndef _ASMARM_PROCESSOR_H_ 2 #define _ASMARM_PROCESSOR_H_ 3 /* 4 * Copyright (C) 2014, Red Hat Inc, Andrew Jones <drjones@redhat.com> 5 * 6 * This work is licensed under the terms of the GNU LGPL, version 2. 7 */ 8 #include <asm/ptrace.h> 9 #include <asm/sysreg.h> 10 11 enum vector { 12 EXCPTN_RST, 13 EXCPTN_UND, 14 EXCPTN_SVC, 15 EXCPTN_PABT, 16 EXCPTN_DABT, 17 EXCPTN_ADDREXCPTN, 18 EXCPTN_IRQ, 19 EXCPTN_FIQ, 20 EXCPTN_MAX, 21 }; 22 23 typedef void (*exception_fn)(struct pt_regs *); 24 extern void install_exception_handler(enum vector v, exception_fn fn); 25 26 extern void show_regs(struct pt_regs *regs); 27 28 static inline unsigned long current_cpsr(void) 29 { 30 unsigned long cpsr; 31 asm volatile("mrs %0, cpsr" : "=r" (cpsr)); 32 return cpsr; 33 } 34 35 #define current_mode() (current_cpsr() & MODE_MASK) 36 37 #define MPIDR __ACCESS_CP15(c0, 0, c0, 5) 38 static inline unsigned int get_mpidr(void) 39 { 40 return read_sysreg(MPIDR); 41 } 42 43 /* Only support Aff0 for now, up to 4 cpus */ 44 #define mpidr_to_cpu(mpidr) ((int)((mpidr) & 0xff)) 45 46 extern void start_usr(void (*func)(void *arg), void *arg, unsigned long sp_usr); 47 extern bool is_user(void); 48 49 #endif /* _ASMARM_PROCESSOR_H_ */ 50