cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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ptrace.h (1635B)

      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
     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) != PRIV_KERNEL)
     18#define user_space(regs)		((regs)->iasq[1] != PRIV_KERNEL)
     19#define instruction_pointer(regs)	((regs)->iaoq[0] & ~3)
     20#define user_stack_pointer(regs)	((regs)->gr[30])
     21unsigned long profile_pc(struct pt_regs *);
     22
     23static inline unsigned long regs_return_value(struct pt_regs *regs)
     24{
     25	return regs->gr[28];
     26}
     27
     28static 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 */
     36extern int regs_query_register_offset(const char *name);
     37extern 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
     42static 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
     50unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs, unsigned int n);
     51int regs_within_kernel_stack(struct pt_regs *regs, unsigned long addr);
     52
     53#endif