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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unaligned.h (3402B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef __ASM_GENERIC_UNALIGNED_H
      3#define __ASM_GENERIC_UNALIGNED_H
      4
      5/*
      6 * This is the most generic implementation of unaligned accesses
      7 * and should work almost anywhere.
      8 */
      9#include <linux/unaligned/packed_struct.h>
     10#include <asm/byteorder.h>
     11
     12#define __get_unaligned_t(type, ptr) ({						\
     13	const struct { type x; } __packed *__pptr = (typeof(__pptr))(ptr);	\
     14	__pptr->x;								\
     15})
     16
     17#define __put_unaligned_t(type, val, ptr) do {					\
     18	struct { type x; } __packed *__pptr = (typeof(__pptr))(ptr);		\
     19	__pptr->x = (val);							\
     20} while (0)
     21
     22#define get_unaligned(ptr)	__get_unaligned_t(typeof(*(ptr)), (ptr))
     23#define put_unaligned(val, ptr) __put_unaligned_t(typeof(*(ptr)), (val), (ptr))
     24
     25static inline u16 get_unaligned_le16(const void *p)
     26{
     27	return le16_to_cpu(__get_unaligned_t(__le16, p));
     28}
     29
     30static inline u32 get_unaligned_le32(const void *p)
     31{
     32	return le32_to_cpu(__get_unaligned_t(__le32, p));
     33}
     34
     35static inline u64 get_unaligned_le64(const void *p)
     36{
     37	return le64_to_cpu(__get_unaligned_t(__le64, p));
     38}
     39
     40static inline void put_unaligned_le16(u16 val, void *p)
     41{
     42	__put_unaligned_t(__le16, cpu_to_le16(val), p);
     43}
     44
     45static inline void put_unaligned_le32(u32 val, void *p)
     46{
     47	__put_unaligned_t(__le32, cpu_to_le32(val), p);
     48}
     49
     50static inline void put_unaligned_le64(u64 val, void *p)
     51{
     52	__put_unaligned_t(__le64, cpu_to_le64(val), p);
     53}
     54
     55static inline u16 get_unaligned_be16(const void *p)
     56{
     57	return be16_to_cpu(__get_unaligned_t(__be16, p));
     58}
     59
     60static inline u32 get_unaligned_be32(const void *p)
     61{
     62	return be32_to_cpu(__get_unaligned_t(__be32, p));
     63}
     64
     65static inline u64 get_unaligned_be64(const void *p)
     66{
     67	return be64_to_cpu(__get_unaligned_t(__be64, p));
     68}
     69
     70static inline void put_unaligned_be16(u16 val, void *p)
     71{
     72	__put_unaligned_t(__be16, cpu_to_be16(val), p);
     73}
     74
     75static inline void put_unaligned_be32(u32 val, void *p)
     76{
     77	__put_unaligned_t(__be32, cpu_to_be32(val), p);
     78}
     79
     80static inline void put_unaligned_be64(u64 val, void *p)
     81{
     82	__put_unaligned_t(__be64, cpu_to_be64(val), p);
     83}
     84
     85static inline u32 __get_unaligned_be24(const u8 *p)
     86{
     87	return p[0] << 16 | p[1] << 8 | p[2];
     88}
     89
     90static inline u32 get_unaligned_be24(const void *p)
     91{
     92	return __get_unaligned_be24(p);
     93}
     94
     95static inline u32 __get_unaligned_le24(const u8 *p)
     96{
     97	return p[0] | p[1] << 8 | p[2] << 16;
     98}
     99
    100static inline u32 get_unaligned_le24(const void *p)
    101{
    102	return __get_unaligned_le24(p);
    103}
    104
    105static inline void __put_unaligned_be24(const u32 val, u8 *p)
    106{
    107	*p++ = val >> 16;
    108	*p++ = val >> 8;
    109	*p++ = val;
    110}
    111
    112static inline void put_unaligned_be24(const u32 val, void *p)
    113{
    114	__put_unaligned_be24(val, p);
    115}
    116
    117static inline void __put_unaligned_le24(const u32 val, u8 *p)
    118{
    119	*p++ = val;
    120	*p++ = val >> 8;
    121	*p++ = val >> 16;
    122}
    123
    124static inline void put_unaligned_le24(const u32 val, void *p)
    125{
    126	__put_unaligned_le24(val, p);
    127}
    128
    129static inline void __put_unaligned_be48(const u64 val, __u8 *p)
    130{
    131	*p++ = val >> 40;
    132	*p++ = val >> 32;
    133	*p++ = val >> 24;
    134	*p++ = val >> 16;
    135	*p++ = val >> 8;
    136	*p++ = val;
    137}
    138
    139static inline void put_unaligned_be48(const u64 val, void *p)
    140{
    141	__put_unaligned_be48(val, p);
    142}
    143
    144static inline u64 __get_unaligned_be48(const u8 *p)
    145{
    146	return (u64)p[0] << 40 | (u64)p[1] << 32 | (u64)p[2] << 24 |
    147		p[3] << 16 | p[4] << 8 | p[5];
    148}
    149
    150static inline u64 get_unaligned_be48(const void *p)
    151{
    152	return __get_unaligned_be48(p);
    153}
    154
    155#endif /* __ASM_GENERIC_UNALIGNED_H */