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/usr/src/linux-headers-5.15.0-181/arch/openrisc/include/asm/

/usr/src/linux-headers-5.15.0-181/arch/openrisc/include/asm

Name	Size	Mode	Actions
bitops/	-	0755	rm
asm-offsets.h	35	0644	edit dl rm
atomic.h	3609	0644	edit dl rm
barrier.h	203	0644	edit dl rm
bitops.h	1326	0644	edit dl rm
cache.h	681	0644	edit dl rm
cacheflush.h	2204	0644	edit dl rm
cmpxchg.h	4056	0644	edit dl rm
cpuinfo.h	763	0644	edit dl rm
delay.h	463	0644	edit dl rm
elf.h	1860	0644	edit dl rm
fixmap.h	2596	0644	edit dl rm
futex.h	2293	0644	edit dl rm
io.h	833	0644	edit dl rm
irq.h	561	0644	edit dl rm
irqflags.h	659	0644	edit dl rm
Kbuild	238	0644	edit dl rm
linkage.h	557	0644	edit dl rm
mmu.h	521	0644	edit dl rm
mmu_context.h	1108	0644	edit dl rm
page.h	2288	0644	edit dl rm
pgalloc.h	1831	0644	edit dl rm
pgtable.h	12749	0644	edit dl rm
processor.h	2339	0644	edit dl rm
ptrace.h	3201	0644	edit dl rm
serial.h	928	0644	edit dl rm
setup.h	293	0644	edit dl rm
smp.h	822	0644	edit dl rm
spinlock.h	778	0644	edit dl rm
spinlock_types.h	188	0644	edit dl rm
spr.h	991	0644	edit dl rm
spr_defs.h	23252	0644	edit dl rm
string.h	324	0644	edit dl rm
syscall.h	1658	0644	edit dl rm
syscalls.h	969	0644	edit dl rm
thread_info.h	3787	0644	edit dl rm
time.h	627	0644	edit dl rm
timex.h	707	0644	edit dl rm
tlb.h	651	0644	edit dl rm
tlbflush.h	1844	0644	edit dl rm
uaccess.h	7985	0644	edit dl rm
unwinder.h	557	0644	edit dl rm
vmalloc.h	102	0644	edit dl rm

Edit: /usr/src/linux-headers-5.15.0-181/arch/openrisc/include/asm/ptrace.h (3201B)

/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * OpenRISC Linux
 *
 * Linux architectural port borrowing liberally from similar works of
 * others.  All original copyrights apply as per the original source
 * declaration.
 *
 * OpenRISC implementation:
 * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
 * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
 * et al.
 */
#ifndef __ASM_OPENRISC_PTRACE_H
#define __ASM_OPENRISC_PTRACE_H

#include <asm/spr_defs.h>
#include <uapi/asm/ptrace.h>

/*
 * Make kernel PTrace/register structures opaque to userspace... userspace can
 * access thread state via the regset mechanism.  This allows us a bit of
 * flexibility in how we order the registers on the stack, permitting some
 * optimizations like packing call-clobbered registers together so that
 * they share a cacheline (not done yet, though... future optimization).
 */

#ifndef __ASSEMBLY__
/*
 * This struct describes how the registers are laid out on the kernel stack
 * during a syscall or other kernel entry.
 *
 * This structure should always be cacheline aligned on the stack.
 * FIXME: I don't think that's the case right now.  The alignment is
 * taken care of elsewhere... head.S, process.c, etc.
 */

struct pt_regs {
	union {
		struct {
			/* Named registers */
			long  sr;	/* Stored in place of r0 */
			long  sp;	/* r1 */
		};
		struct {
			/* Old style */
			long offset[2];
			long gprs[30];
		};
		struct {
			/* New style */
			long gpr[32];
		};
	};
	long  pc;
	/* For restarting system calls:
	 * Set to syscall number for syscall exceptions,
	 * -1 for all other exceptions.
	 */
	long  orig_gpr11;	/* For restarting system calls */
	long dummy;		/* Cheap alignment fix */
	long dummy2;		/* Cheap alignment fix */
};

/* TODO: Rename this to REDZONE because that's what it is */
#define STACK_FRAME_OVERHEAD  128  /* size of minimum stack frame */

#define instruction_pointer(regs)	((regs)->pc)
#define user_mode(regs)			(((regs)->sr & SPR_SR_SM) == 0)
#define user_stack_pointer(regs)	((unsigned long)(regs)->sp)
#define profile_pc(regs)		instruction_pointer(regs)

static inline long regs_return_value(struct pt_regs *regs)
{
	return regs->gpr[11];
}

#endif /* __ASSEMBLY__ */

/*
 * Offsets used by 'ptrace' system call interface.
 */
#define PT_SR         0
#define PT_SP         4
#define PT_GPR2       8
#define PT_GPR3       12
#define PT_GPR4       16
#define PT_GPR5       20
#define PT_GPR6       24
#define PT_GPR7       28
#define PT_GPR8       32
#define PT_GPR9       36
#define PT_GPR10      40
#define PT_GPR11      44
#define PT_GPR12      48
#define PT_GPR13      52
#define PT_GPR14      56
#define PT_GPR15      60
#define PT_GPR16      64
#define PT_GPR17      68
#define PT_GPR18      72
#define PT_GPR19      76
#define PT_GPR20      80
#define PT_GPR21      84
#define PT_GPR22      88
#define PT_GPR23      92
#define PT_GPR24      96
#define PT_GPR25      100
#define PT_GPR26      104
#define PT_GPR27      108
#define PT_GPR28      112
#define PT_GPR29      116
#define PT_GPR30      120
#define PT_GPR31      124
#define PT_PC	      128
#define PT_ORIG_GPR11 132
#define PT_SYSCALLNO  136

#endif /* __ASM_OPENRISC_PTRACE_H */

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