1 /* SPDX-License-Identifier: GPL-2.0 */ 2 // Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. 3 4 #ifndef __ASM_CSKY_PTRACE_H 5 #define __ASM_CSKY_PTRACE_H 6 7 #include <uapi/asm/ptrace.h> 8 #include <asm/traps.h> 9 #include <linux/types.h> 10 11 #ifndef __ASSEMBLY__ 12 13 #define PS_S 0x80000000 /* Supervisor Mode */ 14 15 #define arch_has_single_step() (1) 16 #define current_pt_regs() \ 17 ({ (struct pt_regs *)((char *)current_thread_info() + THREAD_SIZE) - 1; }) 18 19 #define user_stack_pointer(regs) ((regs)->usp) 20 21 #define user_mode(regs) (!((regs)->sr & PS_S)) 22 #define instruction_pointer(regs) ((regs)->pc) 23 #define profile_pc(regs) instruction_pointer(regs) 24 25 static inline bool in_syscall(struct pt_regs const *regs) 26 { 27 return ((regs->sr >> 16) & 0xff) == VEC_TRAP0; 28 } 29 30 static inline void forget_syscall(struct pt_regs *regs) 31 { 32 regs->sr &= ~(0xff << 16); 33 } 34 35 static inline unsigned long regs_return_value(struct pt_regs *regs) 36 { 37 return regs->a0; 38 } 39 40 #endif /* __ASSEMBLY__ */ 41 #endif /* __ASM_CSKY_PTRACE_H */ 42