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

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

Name	Size	Mode	Actions
agp.h	596	0644	edit dl rm
alternative.h	1954	0644	edit dl rm
asm-offsets.h	35	0644	edit dl rm
asmregs.h	2478	0644	edit dl rm
assembly.h	12496	0644	edit dl rm
atomic.h	5718	0644	edit dl rm
barrier.h	2563	0644	edit dl rm
bitops.h	5578	0644	edit dl rm
bug.h	2408	0644	edit dl rm
cache.h	2084	0644	edit dl rm
cacheflush.h	3773	0644	edit dl rm
checksum.h	4715	0644	edit dl rm
cmpxchg.h	3783	0644	edit dl rm
compat.h	3973	0644	edit dl rm
compat_ucontext.h	591	0644	edit dl rm
delay.h	533	0644	edit dl rm
dma-mapping.h	1012	0644	edit dl rm
dma.h	5849	0644	edit dl rm
dwarf.h	456	0644	edit dl rm
eisa_bus.h	492	0644	edit dl rm
eisa_eeprom.h	4318	0644	edit dl rm
elf.h	14381	0644	edit dl rm
fb.h	491	0644	edit dl rm
fixmap.h	1611	0644	edit dl rm
floppy.h	6193	0644	edit dl rm
ftrace.h	641	0644	edit dl rm
futex.h	2666	0644	edit dl rm
grfioctl.h	4090	0644	edit dl rm
hardirq.h	976	0644	edit dl rm
hardware.h	4239	0644	edit dl rm
hash.h	5194	0644	edit dl rm
hugetlb.h	1331	0644	edit dl rm
ide.h	1120	0644	edit dl rm
io.h	8307	0644	edit dl rm
irq.h	1171	0644	edit dl rm
irqflags.h	1046	0644	edit dl rm
jump_label.h	990	0644	edit dl rm
kbdleds.h	477	0644	edit dl rm
Kbuild	175	0644	edit dl rm
kexec.h	827	0644	edit dl rm
kgdb.h	1318	0644	edit dl rm
kprobes.h	1284	0644	edit dl rm
ldcw.h	2570	0644	edit dl rm
led.h	1362	0644	edit dl rm
linkage.h	738	0644	edit dl rm
machdep.h	349	0644	edit dl rm
mckinley.h	270	0644	edit dl rm
mmu.h	195	0644	edit dl rm
mmu_context.h	2355	0644	edit dl rm
mmzone.h	202	0644	edit dl rm
module.h	527	0644	edit dl rm
page.h	5533	0644	edit dl rm
parisc-device.h	1964	0644	edit dl rm
parport.h	358	0644	edit dl rm
patch.h	445	0644	edit dl rm
pci.h	5956	0644	edit dl rm
pdc.h	4269	0644	edit dl rm
pdcpat.h	16968	0644	edit dl rm
pdc_chassis.h	14745	0644	edit dl rm
perf.h	1936	0644	edit dl rm
perf_event.h	152	0644	edit dl rm
pgalloc.h	1722	0644	edit dl rm
pgtable.h	17034	0644	edit dl rm
prefetch.h	1147	0644	edit dl rm
processor.h	9486	0644	edit dl rm
psw.h	2464	0644	edit dl rm
ptrace.h	1603	0644	edit dl rm
ropes.h	10060	0644	edit dl rm
rt_sigframe.h	745	0644	edit dl rm
runway.h	320	0644	edit dl rm
seccomp.h	651	0644	edit dl rm
sections.h	494	0644	edit dl rm
serial.h	124	0644	edit dl rm
shmparam.h	263	0644	edit dl rm
signal.h	685	0644	edit dl rm
smp.h	1276	0644	edit dl rm
socket.h	310	0644	edit dl rm
sparsemem.h	345	0644	edit dl rm
special_insns.h	1554	0644	edit dl rm
spinlock.h	3182	0644	edit dl rm
spinlock_types.h	701	0644	edit dl rm
string.h	247	0644	edit dl rm
superio.h	3333	0644	edit dl rm
switch_to.h	332	0644	edit dl rm
syscall.h	1477	0644	edit dl rm
termios.h	1761	0644	edit dl rm
thread_info.h	3143	0644	edit dl rm
timex.h	403	0644	edit dl rm
tlb.h	288	0644	edit dl rm
tlbflush.h	1975	0644	edit dl rm
topology.h	900	0644	edit dl rm
traps.h	598	0644	edit dl rm
uaccess.h	6253	0644	edit dl rm
ucontext.h	327	0644	edit dl rm
unaligned.h	307	0644	edit dl rm
unistd.h	5776	0644	edit dl rm
unwind.h	2723	0644	edit dl rm
vmalloc.h	96	0644	edit dl rm

Edit: /usr/src/linux-headers-5.15.0-181/arch/parisc/include/asm/uaccess.h (6253B)

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __PARISC_UACCESS_H
#define __PARISC_UACCESS_H

/*
 * User space memory access functions
 */
#include <asm/page.h>
#include <asm/cache.h>

#include <linux/bug.h>
#include <linux/string.h>

/*
 * Note that since kernel addresses are in a separate address space on
 * parisc, we don't need to do anything for access_ok().
 * We just let the page fault handler do the right thing. This also means
 * that put_user is the same as __put_user, etc.
 */

#define access_ok(uaddr, size)	\
	( (uaddr) == (uaddr) )

#define put_user __put_user
#define get_user __get_user

#if !defined(CONFIG_64BIT)
#define LDD_USER(sr, val, ptr)	__get_user_asm64(sr, val, ptr)
#define STD_USER(sr, x, ptr)	__put_user_asm64(sr, x, ptr)
#else
#define LDD_USER(sr, val, ptr)	__get_user_asm(sr, val, "ldd", ptr)
#define STD_USER(sr, x, ptr)	__put_user_asm(sr, "std", x, ptr)
#endif

/*
 * The exception table contains two values: the first is the relative offset to
 * the address of the instruction that is allowed to fault, and the second is
 * the relative offset to the address of the fixup routine. Since relative
 * addresses are used, 32bit values are sufficient even on 64bit kernel.
 */

#define ARCH_HAS_RELATIVE_EXTABLE
struct exception_table_entry {
	int insn;	/* relative address of insn that is allowed to fault. */
	int fixup;	/* relative address of fixup routine */
};

#define ASM_EXCEPTIONTABLE_ENTRY( fault_addr, except_addr )\
	".section __ex_table,\"aw\"\n"			   \
	".word (" #fault_addr " - .), (" #except_addr " - .)\n\t" \
	".previous\n"

/*
 * ASM_EXCEPTIONTABLE_ENTRY_EFAULT() creates a special exception table entry
 * (with lowest bit set) for which the fault handler in fixup_exception() will
 * load -EFAULT into %r8 for a read or write fault, and zeroes the target
 * register in case of a read fault in get_user().
 */
#define ASM_EXCEPTIONTABLE_ENTRY_EFAULT( fault_addr, except_addr )\
	ASM_EXCEPTIONTABLE_ENTRY( fault_addr, except_addr + 1)

#define __get_user_internal(sr, val, ptr)		\
({							\
	register long __gu_err __asm__ ("r8") = 0;	\
							\
	switch (sizeof(*(ptr))) {			\
	case 1: __get_user_asm(sr, val, "ldb", ptr); break; \
	case 2: __get_user_asm(sr, val, "ldh", ptr); break; \
	case 4: __get_user_asm(sr, val, "ldw", ptr); break; \
	case 8: LDD_USER(sr, val, ptr); break;		\
	default: BUILD_BUG();				\
	}						\
							\
	__gu_err;					\
})

#define __get_user(val, ptr)				\
({							\
	__get_user_internal("%%sr3,", val, ptr);	\
})

#define __get_user_asm(sr, val, ldx, ptr)		\
{							\
	register long __gu_val;				\
							\
	__asm__("1: " ldx " 0(" sr "%2),%0\n"		\
		"9:\n"					\
		ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 9b)	\
		: "=r"(__gu_val), "=r"(__gu_err)        \
		: "r"(ptr), "1"(__gu_err));		\
							\
	(val) = (__force __typeof__(*(ptr))) __gu_val;	\
}

#define HAVE_GET_KERNEL_NOFAULT
#define __get_kernel_nofault(dst, src, type, err_label)	\
{							\
	type __z;					\
	long __err;					\
	__err = __get_user_internal("%%sr0,", __z, (type *)(src)); \
	if (unlikely(__err))				\
		goto err_label;				\
	else						\
		*(type *)(dst) = __z;			\
}

#if !defined(CONFIG_64BIT)

#define __get_user_asm64(sr, val, ptr)			\
{							\
	union {						\
		unsigned long long	l;		\
		__typeof__(*(ptr))	t;		\
	} __gu_tmp;					\
							\
	__asm__("   copy %%r0,%R0\n"			\
		"1: ldw 0(" sr "%2),%0\n"		\
		"2: ldw 4(" sr "%2),%R0\n"		\
		"9:\n"					\
		ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 9b)	\
		ASM_EXCEPTIONTABLE_ENTRY_EFAULT(2b, 9b)	\
		: "=&r"(__gu_tmp.l), "=r"(__gu_err)	\
		: "r"(ptr), "1"(__gu_err));		\
							\
	(val) = __gu_tmp.t;				\
}

#endif /* !defined(CONFIG_64BIT) */

#define __put_user_internal(sr, x, ptr)				\
({								\
	register long __pu_err __asm__ ("r8") = 0;      	\
        __typeof__(*(ptr)) __x = (__typeof__(*(ptr)))(x);	\
								\
	switch (sizeof(*(ptr))) {				\
	case 1: __put_user_asm(sr, "stb", __x, ptr); break;	\
	case 2: __put_user_asm(sr, "sth", __x, ptr); break;	\
	case 4: __put_user_asm(sr, "stw", __x, ptr); break;	\
	case 8: STD_USER(sr, __x, ptr); break;			\
	default: BUILD_BUG();					\
	}							\
								\
	__pu_err;						\
})

#define __put_user(x, ptr)					\
({								\
	__put_user_internal("%%sr3,", x, ptr);			\
})

#define __put_kernel_nofault(dst, src, type, err_label)		\
{								\
	type __z = *(type *)(src);				\
	long __err;						\
	__err = __put_user_internal("%%sr0,", __z, (type *)(dst)); \
	if (unlikely(__err))					\
		goto err_label;					\
}

/*
 * The "__put_user/kernel_asm()" macros tell gcc they read from memory
 * instead of writing. This is because they do not write to any memory
 * gcc knows about, so there are no aliasing issues. These macros must
 * also be aware that fixups are executed in the context of the fault,
 * and any registers used there must be listed as clobbers.
 * r8 is already listed as err.
 */

#define __put_user_asm(sr, stx, x, ptr)				\
	__asm__ __volatile__ (					\
		"1: " stx " %2,0(" sr "%1)\n"			\
		"9:\n"						\
		ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 9b)		\
		: "=r"(__pu_err)				\
		: "r"(ptr), "r"(x), "0"(__pu_err))

#if !defined(CONFIG_64BIT)

#define __put_user_asm64(sr, __val, ptr) do {			\
	__asm__ __volatile__ (					\
		"1: stw %2,0(" sr "%1)\n"			\
		"2: stw %R2,4(" sr "%1)\n"			\
		"9:\n"						\
		ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 9b)		\
		ASM_EXCEPTIONTABLE_ENTRY_EFAULT(2b, 9b)		\
		: "=r"(__pu_err)				\
		: "r"(ptr), "r"(__val), "0"(__pu_err));		\
} while (0)

#endif /* !defined(CONFIG_64BIT) */

/*
 * Complex access routines -- external declarations
 */

extern long strncpy_from_user(char *, const char __user *, long);
extern __must_check unsigned lclear_user(void __user *, unsigned long);
extern __must_check long strnlen_user(const char __user *src, long n);
/*
 * Complex access routines -- macros
 */

#define clear_user lclear_user
#define __clear_user lclear_user

unsigned long __must_check raw_copy_to_user(void __user *dst, const void *src,
					    unsigned long len);
unsigned long __must_check raw_copy_from_user(void *dst, const void __user *src,
					    unsigned long len);
#define INLINE_COPY_TO_USER
#define INLINE_COPY_FROM_USER

struct pt_regs;
int fixup_exception(struct pt_regs *regs);

#endif /* __PARISC_UACCESS_H */

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