1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* written by Philipp Rumpf, Copyright (C) 1999 SuSE GmbH Nuernberg 3 ** Copyright (C) 2000 Grant Grundler, Hewlett-Packard 4 */ 5 #ifndef _PARISC_PTRACE_H 6 #define _PARISC_PTRACE_H 7 8 #include <uapi/asm/ptrace.h> 9 10 11 #define task_regs(task) ((struct pt_regs *) ((char *)(task) + TASK_REGS)) 12 13 #define arch_has_single_step() 1 14 #define arch_has_block_step() 1 15 16 /* XXX should we use iaoq[1] or iaoq[0] ? */ 17 #define user_mode(regs) (((regs)->iaoq[0] & 3) ? 1 : 0) 18 #define user_space(regs) (((regs)->iasq[1] != 0) ? 1 : 0) 19 #define instruction_pointer(regs) ((regs)->iaoq[0] & ~3) 20 #define user_stack_pointer(regs) ((regs)->gr[30]) 21 unsigned long profile_pc(struct pt_regs *); 22 23 static inline unsigned long regs_return_value(struct pt_regs *regs) 24 { 25 return regs->gr[28]; 26 } 27 28 static inline void instruction_pointer_set(struct pt_regs *regs, 29 unsigned long val) 30 { 31 regs->iaoq[0] = val; 32 regs->iaoq[1] = val + 4; 33 } 34 35 /* Query offset/name of register from its name/offset */ 36 extern int regs_query_register_offset(const char *name); 37 extern const char *regs_query_register_name(unsigned int offset); 38 #define MAX_REG_OFFSET (offsetof(struct pt_regs, ipsw)) 39 40 #define kernel_stack_pointer(regs) ((regs)->gr[30]) 41 42 static inline unsigned long regs_get_register(struct pt_regs *regs, 43 unsigned int offset) 44 { 45 if (unlikely(offset > MAX_REG_OFFSET)) 46 return 0; 47 return *(unsigned long *)((unsigned long)regs + offset); 48 } 49 50 unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs, unsigned int n); 51 int regs_within_kernel_stack(struct pt_regs *regs, unsigned long addr); 52 53 #endif 54