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

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

Name	Size	Mode	Actions
asm-offsets.h	35	0644	edit dl rm
atomic.h	4361	0644	edit dl rm
bitops.h	6152	0644	edit dl rm
cache.h	555	0644	edit dl rm
cacheflush.h	2725	0644	edit dl rm
checksum.h	685	0644	edit dl rm
cmpxchg.h	2003	0644	edit dl rm
delay.h	344	0644	edit dl rm
dma.h	300	0644	edit dl rm
elf.h	5758	0644	edit dl rm
exec.h	398	0644	edit dl rm
fixmap.h	369	0644	edit dl rm
fpu.h	90	0644	edit dl rm
futex.h	2306	0644	edit dl rm
hexagon_vm.h	5909	0644	edit dl rm
intrinsics.h	369	0644	edit dl rm
io.h	6264	0644	edit dl rm
irq.h	523	0644	edit dl rm
irqflags.h	860	0644	edit dl rm
Kbuild	131	0644	edit dl rm
kgdb.h	754	0644	edit dl rm
linkage.h	237	0644	edit dl rm
mem-layout.h	2865	0644	edit dl rm
mmu.h	490	0644	edit dl rm
mmu_context.h	1544	0644	edit dl rm
page.h	4179	0644	edit dl rm
perf_event.h	207	0644	edit dl rm
pgalloc.h	2709	0644	edit dl rm
pgtable.h	11952	0644	edit dl rm
processor.h	3173	0644	edit dl rm
smp.h	707	0644	edit dl rm
spinlock.h	3295	0644	edit dl rm
spinlock_types.h	545	0644	edit dl rm
string.h	472	0644	edit dl rm
suspend.h	238	0644	edit dl rm
switch_to.h	478	0644	edit dl rm
syscall.h	1170	0644	edit dl rm
syscalls.h	204	0644	edit dl rm
thread_info.h	3505	0644	edit dl rm
time.h	346	0644	edit dl rm
timex.h	495	0644	edit dl rm
tlb.h	253	0644	edit dl rm
tlbflush.h	1497	0644	edit dl rm
traps.h	410	0644	edit dl rm
uaccess.h	1870	0644	edit dl rm
vdso.h	307	0644	edit dl rm
vermagic.h	299	0644	edit dl rm
vmalloc.h	99	0644	edit dl rm
vm_fault.h	359	0644	edit dl rm
vm_mmu.h	2818	0644	edit dl rm

Edit: /usr/src/linux-headers-5.15.0-181/arch/hexagon/include/asm/processor.h (3173B)

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Process/processor support for the Hexagon architecture
 *
 * Copyright (c) 2010-2012, The Linux Foundation. All rights reserved.
 */

#ifndef _ASM_PROCESSOR_H
#define _ASM_PROCESSOR_H

#ifndef __ASSEMBLY__

#include <asm/mem-layout.h>
#include <asm/registers.h>
#include <asm/hexagon_vm.h>

/*  task_struct, defined elsewhere, is the "process descriptor" */
struct task_struct;

extern void start_thread(struct pt_regs *, unsigned long, unsigned long);

/*
 * thread_struct is supposed to be for context switch data.
 * Specifically, to hold the state necessary to perform switch_to...
 */
struct thread_struct {
	void *switch_sp;
};

/*
 * initializes thread_struct
 * The only thing we have in there is switch_sp
 * which doesn't really need to be initialized.
 */

#define INIT_THREAD { \
}

#define cpu_relax() __vmyield()

/*
 * Decides where the kernel will search for a free chunk of vm space during
 * mmaps.
 * See also arch_get_unmapped_area.
 * Doesn't affect if you have MAX_FIXED in the page flags set though...
 *
 * Apparently the convention is that ld.so will ask for "unmapped" private
 * memory to be allocated SOMEWHERE, but it also asks for memory explicitly
 * via MAP_FIXED at the lower * addresses starting at VA=0x0.
 *
 * If the two requests collide, you get authentic segfaulting action, so
 * you have to kick the "unmapped" base requests higher up.
 */
#define TASK_UNMAPPED_BASE	(PAGE_ALIGN(TASK_SIZE/3))

#define task_pt_regs(task) \
	((struct pt_regs *)(task_stack_page(task) + THREAD_SIZE) - 1)

#define KSTK_EIP(tsk) (pt_elr(task_pt_regs(tsk)))
#define KSTK_ESP(tsk) (pt_psp(task_pt_regs(tsk)))

/*  Free all resources held by a thread; defined in process.c  */
extern void release_thread(struct task_struct *dead_task);

/* Get wait channel for task P.  */
extern unsigned long __get_wchan(struct task_struct *p);

/*  The following stuff is pretty HEXAGON specific.  */

/*  This is really just here for __switch_to.
    Offsets are pulled via asm-offsets.c  */

/*
 * No real reason why VM and native switch stacks should be different.
 * Ultimately this should merge.  Note that Rev C. ABI called out only
 * R24-27 as callee saved GPRs needing explicit attention (R29-31 being
 * dealt with automagically by allocframe), but the current ABI has
 * more, R16-R27.  By saving more, the worst case is that we waste some
 * cycles if building with the old compilers.
 */

struct hexagon_switch_stack {
	union {
		struct {
			unsigned long r16;
			unsigned long r17;
		};
		unsigned long long	r1716;
	};
	union {
		struct {
			unsigned long r18;
			unsigned long r19;
		};
		unsigned long long	r1918;
	};
	union {
		struct {
			unsigned long r20;
			unsigned long r21;
		};
		unsigned long long	r2120;
	};
	union {
		struct {
			unsigned long r22;
			unsigned long r23;
		};
		unsigned long long	r2322;
	};
	union {
		struct {
			unsigned long r24;
			unsigned long r25;
		};
		unsigned long long	r2524;
	};
	union {
		struct {
			unsigned long r26;
			unsigned long r27;
		};
		unsigned long long	r2726;
	};

unsigned long		fp;
	unsigned long		lr;
};

#endif /* !__ASSEMBLY__ */

#endif

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