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 <asm/assembly.h> 9 #include <uapi/asm/ptrace.h> 10 #include <linux/compiler.h> 11 12 #define task_regs(task) ((struct pt_regs *) ((char *)(task) + TASK_REGS)) 13 14 #define arch_has_single_step() 1 15 #define arch_has_block_step() 1 16 17 /* XXX should we use iaoq[1] or iaoq[0] ? */ 18 #define user_mode(regs) (((regs)->iaoq[0] & 3) != PRIV_KERNEL) 19 #define user_space(regs) ((regs)->iasq[1] != PRIV_KERNEL) 20 #define instruction_pointer(regs) ((regs)->iaoq[0] & ~3) 21 #define user_stack_pointer(regs) ((regs)->gr[30]) 22 unsigned long profile_pc(struct pt_regs *); 23 24 static inline unsigned long regs_return_value(struct pt_regs *regs) 25 { 26 return regs->gr[28]; 27 } 28 29 static inline void instruction_pointer_set(struct pt_regs *regs, 30 unsigned long val) 31 { 32 regs->iaoq[0] = val; 33 regs->iaoq[1] = val + 4; 34 } 35 36 /* Query offset/name of register from its name/offset */ 37 extern int regs_query_register_offset(const char *name); 38 extern const char *regs_query_register_name(unsigned int offset); 39 #define MAX_REG_OFFSET (offsetof(struct pt_regs, ipsw)) 40 41 #define kernel_stack_pointer(regs) ((regs)->gr[30]) 42 43 static inline unsigned long regs_get_register(struct pt_regs *regs, 44 unsigned int offset) 45 { 46 if (unlikely(offset > MAX_REG_OFFSET)) 47 return 0; 48 return *(unsigned long *)((unsigned long)regs + offset); 49 } 50 51 unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs, unsigned int n); 52 int regs_within_kernel_stack(struct pt_regs *regs, unsigned long addr); 53 54 #endif 55