FM / asm

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

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

Name	Size	Mode	Actions
asm-offsets.h	35	0644	edit dl rm
asm-uaccess.h	4180	0644	edit dl rm
asmmacro.h	4763	0644	edit dl rm
atomic.h	7301	0644	edit dl rm
barrier.h	594	0644	edit dl rm
bitops.h	5398	0644	edit dl rm
bootparam.h	1402	0644	edit dl rm
cache.h	1114	0644	edit dl rm
cacheasm.h	3856	0644	edit dl rm
cacheflush.h	5968	0644	edit dl rm
checksum.h	5893	0644	edit dl rm
cmpxchg.h	5684	0644	edit dl rm
coprocessor.h	4623	0644	edit dl rm
core.h	830	0644	edit dl rm
current.h	679	0644	edit dl rm
delay.h	1668	0644	edit dl rm
dma.h	1830	0644	edit dl rm
elf.h	5115	0644	edit dl rm
fixmap.h	1106	0644	edit dl rm
flat.h	440	0644	edit dl rm
ftrace.h	979	0644	edit dl rm
futex.h	3889	0644	edit dl rm
highmem.h	2167	0644	edit dl rm
hw_breakpoint.h	1597	0644	edit dl rm
initialize_mmu.h	5196	0644	edit dl rm
io.h	1959	0644	edit dl rm
irq.h	1127	0644	edit dl rm
irqflags.h	2069	0644	edit dl rm
jump_label.h	1655	0644	edit dl rm
kasan.h	859	0644	edit dl rm
Kbuild	230	0644	edit dl rm
kmem_layout.h	2790	0644	edit dl rm
linkage.h	154	0644	edit dl rm
mmu.h	462	0644	edit dl rm
mmu_context.h	3624	0644	edit dl rm
mxregs.h	1330	0644	edit dl rm
nommu_context.h	156	0644	edit dl rm
page.h	5793	0644	edit dl rm
pci-bridge.h	2170	0644	edit dl rm
pci.h	1302	0644	edit dl rm
perf_event.h	108	0644	edit dl rm
pgalloc.h	1405	0644	edit dl rm
pgtable.h	14470	0644	edit dl rm
platform.h	1528	0644	edit dl rm
processor.h	7705	0644	edit dl rm
ptrace.h	3321	0644	edit dl rm
regs.h	4017	0644	edit dl rm
seccomp.h	287	0644	edit dl rm
serial.h	443	0644	edit dl rm
shmparam.h	561	0644	edit dl rm
signal.h	502	0644	edit dl rm
smp.h	967	0644	edit dl rm
spinlock.h	472	0644	edit dl rm
spinlock_types.h	317	0644	edit dl rm
stackprotector.h	1140	0644	edit dl rm
stacktrace.h	1158	0644	edit dl rm
string.h	3385	0644	edit dl rm
switch_to.h	601	0644	edit dl rm
syscall.h	2140	0644	edit dl rm
sysmem.h	426	0644	edit dl rm
thread_info.h	3965	0644	edit dl rm
timex.h	1440	0644	edit dl rm
tlb.h	475	0644	edit dl rm
tlbflush.h	5620	0644	edit dl rm
traps.h	2779	0644	edit dl rm
uaccess.h	9375	0644	edit dl rm
ucontext.h	540	0644	edit dl rm
unistd.h	370	0644	edit dl rm
vectors.h	3276	0644	edit dl rm
vermagic.h	433	0644	edit dl rm
vmalloc.h	96	0644	edit dl rm

Edit: /usr/src/linux-headers-5.15.0-181/arch/xtensa/include/asm/traps.h (2779B)

/*
 * arch/xtensa/include/asm/traps.h
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 2012 Tensilica Inc.
 */
#ifndef _XTENSA_TRAPS_H
#define _XTENSA_TRAPS_H

#include <asm/ptrace.h>

/*
 * Per-CPU exception handling data structure.
 * EXCSAVE1 points to it.
 */
struct exc_table {
	/* Kernel Stack */
	void *kstk;
	/* Double exception save area for a0 */
	unsigned long double_save;
	/* Fixup handler */
	void *fixup;
	/* For passing a parameter to fixup */
	void *fixup_param;
	/* Fast user exception handlers */
	void *fast_user_handler[EXCCAUSE_N];
	/* Fast kernel exception handlers */
	void *fast_kernel_handler[EXCCAUSE_N];
	/* Default C-Handlers */
	void *default_handler[EXCCAUSE_N];
};

/*
 * handler must be either of the following:
 *  void (*)(struct pt_regs *regs);
 *  void (*)(struct pt_regs *regs, unsigned long exccause);
 */
extern void * __init trap_set_handler(int cause, void *handler);
extern void do_unhandled(struct pt_regs *regs, unsigned long exccause);
void fast_second_level_miss(void);

/* Initialize minimal exc_table structure sufficient for basic paging */
static inline void __init early_trap_init(void)
{
	static struct exc_table exc_table __initdata = {
		.fast_kernel_handler[EXCCAUSE_DTLB_MISS] =
			fast_second_level_miss,
	};
	__asm__ __volatile__("wsr  %0, excsave1\n" : : "a" (&exc_table));
}

void secondary_trap_init(void);

static inline void spill_registers(void)
{
#if XCHAL_NUM_AREGS > 16
	__asm__ __volatile__ (
		"	call8	1f\n"
		"	_j	2f\n"
		"	retw\n"
		"	.align	4\n"
		"1:\n"
#if XCHAL_NUM_AREGS == 32
		"	_entry	a1, 32\n"
		"	addi	a8, a0, 3\n"
		"	_entry	a1, 16\n"
		"	mov	a12, a12\n"
		"	retw\n"
#else
		"	_entry	a1, 48\n"
		"	call12	1f\n"
		"	retw\n"
		"	.align	4\n"
		"1:\n"
		"	.rept	(" __stringify(XCHAL_NUM_AREGS) " - 16) / 12\n"
		"	_entry	a1, 48\n"
		"	mov	a12, a0\n"
		"	.endr\n"
		"	_entry	a1, 16\n"
#if XCHAL_NUM_AREGS % 12 == 0
		"	mov	a12, a12\n"
#elif XCHAL_NUM_AREGS % 12 == 4
		"	mov	a4, a4\n"
#elif XCHAL_NUM_AREGS % 12 == 8
		"	mov	a8, a8\n"
#endif
		"	retw\n"
#endif
		"2:\n"
		: : : "a8", "a9", "memory");
#else
	__asm__ __volatile__ (
		"	mov	a12, a12\n"
		: : : "memory");
#endif
}

struct debug_table {
	/* Pointer to debug exception handler */
	void (*debug_exception)(void);
	/* Temporary register save area */
	unsigned long debug_save[1];
#ifdef CONFIG_HAVE_HW_BREAKPOINT
	/* Save area for DBREAKC registers */
	unsigned long dbreakc_save[XCHAL_NUM_DBREAK];
	/* Saved ICOUNT register */
	unsigned long icount_save;
	/* Saved ICOUNTLEVEL register */
	unsigned long icount_level_save;
#endif
};

void debug_exception(void);

#endif /* _XTENSA_TRAPS_H */

cmd: