1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 #ifndef _ASMRISCV_PROCESSOR_H_ 3 #define _ASMRISCV_PROCESSOR_H_ 4 #include <asm/csr.h> 5 #include <asm/ptrace.h> 6 7 #define EXCEPTION_CAUSE_MAX 16 8 9 typedef void (*exception_fn)(struct pt_regs *); 10 11 struct thread_info { 12 int cpu; 13 unsigned long hartid; 14 exception_fn exception_handlers[EXCEPTION_CAUSE_MAX]; 15 }; 16 17 static inline struct thread_info *current_thread_info(void) 18 { 19 return (struct thread_info *)csr_read(CSR_SSCRATCH); 20 } 21 22 void install_exception_handler(unsigned long cause, void (*handler)(struct pt_regs *)); 23 void do_handle_exception(struct pt_regs *regs); 24 void thread_info_init(void); 25 26 void show_regs(struct pt_regs *regs); 27 28 #endif /* _ASMRISCV_PROCESSOR_H_ */ 29